Subjects -> BUSINESS AND ECONOMICS (Total: 3570 journals)
    - ACCOUNTING (132 journals)
    - BANKING AND FINANCE (306 journals)
    - BUSINESS AND ECONOMICS (1248 journals)
    - CONSUMER EDUCATION AND PROTECTION (20 journals)
    - COOPERATIVES (4 journals)
    - ECONOMIC SCIENCES: GENERAL (212 journals)
    - ECONOMIC SYSTEMS, THEORIES AND HISTORY (235 journals)
    - FASHION AND CONSUMER TRENDS (20 journals)
    - HUMAN RESOURCES (103 journals)
    - INSURANCE (26 journals)
    - INTERNATIONAL COMMERCE (145 journals)
    - INTERNATIONAL DEVELOPMENT AND AID (103 journals)
    - INVESTMENTS (22 journals)
    - LABOR AND INDUSTRIAL RELATIONS (61 journals)
    - MACROECONOMICS (17 journals)
    - MANAGEMENT (595 journals)
    - MARKETING AND PURCHASING (116 journals)
    - MICROECONOMICS (23 journals)
    - PRODUCTION OF GOODS AND SERVICES (143 journals)
    - PUBLIC FINANCE, TAXATION (37 journals)
    - TRADE AND INDUSTRIAL DIRECTORIES (2 journals)

BUSINESS AND ECONOMICS (1248 journals)            First | 1 2 3 4 5 6 7 | Last

Showing 601 - 800 of 1566 Journals sorted alphabetically
Investigación Administrativa     Open Access  
IPPR Progressive Review     Hybrid Journal  
Issues in Economics and Business     Open Access  
IZA Journal of Labor Economics     Open Access   (Followers: 17)
J : Multidisciplinary Scientific Journal     Open Access  
Jahrbuch für Regionalwissenschaft     Hybrid Journal  
Jàmbá : Journal of Disaster Risk Studies     Open Access   (Followers: 3)
Japan and the World Economy     Hybrid Journal   (Followers: 5)
Japanese Economic Review     Hybrid Journal   (Followers: 2)
Jindal Journal of Business Research     Full-text available via subscription  
Journal cover Sustainability Management Forum / NachhaltigkeitsManagementForum     Hybrid Journal  
Journal for Art Market Studies     Open Access   (Followers: 1)
Journal for Global Business Advancement     Hybrid Journal  
Journal for International Business and Entrepreneurship Development     Hybrid Journal   (Followers: 8)
Journal of Accounting & Organizational Change     Hybrid Journal   (Followers: 3)
Journal of Accounting and Economics     Hybrid Journal   (Followers: 44)
Journal of Adult Development     Hybrid Journal   (Followers: 6)
Journal of African Business     Hybrid Journal   (Followers: 1)
Journal of African Economies     Hybrid Journal   (Followers: 19)
Journal of Aggression Maltreatment & Trauma     Hybrid Journal   (Followers: 5)
Journal of Aging & Social Policy     Hybrid Journal   (Followers: 11)
Journal of Aging Studies     Hybrid Journal   (Followers: 13)
Journal of Agricultural Economics     Hybrid Journal   (Followers: 31)
Journal of Agronomy     Open Access   (Followers: 7)
Journal of Applied and Industrial Mathematics     Hybrid Journal  
Journal of Applied Business Research     Open Access   (Followers: 3)
Journal of Applied Corporate Finance     Hybrid Journal   (Followers: 18)
Journal of Applied Econometrics     Hybrid Journal   (Followers: 55)
Journal of Applied Economics     Open Access   (Followers: 13)
Journal of ASEAN Studies     Open Access   (Followers: 1)
Journal of Asia Business Studies     Hybrid Journal   (Followers: 1)
Journal of Asia-Pacific Business     Hybrid Journal  
Journal of Asian Economics     Hybrid Journal   (Followers: 3)
Journal of Banking & Finance     Hybrid Journal   (Followers: 173)
Journal of Banking Regulation     Hybrid Journal   (Followers: 27)
Journal of Behavioral and Experimental Finance     Full-text available via subscription   (Followers: 5)
Journal of Behavioral Decision Making     Hybrid Journal   (Followers: 22)
Journal of Behavioral Finance     Hybrid Journal   (Followers: 15)
Journal of Behavioural Economics and Social Systems     Open Access   (Followers: 2)
Journal of Bioeconomics     Hybrid Journal  
Journal of Business     Open Access   (Followers: 1)
Journal of Business     Open Access  
Journal of Business & Economic Statistics     Full-text available via subscription   (Followers: 38)
Journal of Business & Economics Research     Open Access   (Followers: 2)
Journal of Business & Financial Affairs     Open Access  
Journal of Business & Technology Law     Open Access   (Followers: 2)
Journal of Business Administration : The Association of Private Higher Education Institutions of Thailand     Open Access  
Journal of Business Administration and Social Sciences Ramkhamhaeng University     Open Access  
Journal of Business Administration Research     Open Access  
Journal of Business Analytics     Hybrid Journal  
Journal of Business and Behavioural Entrepreneurship     Open Access   (Followers: 1)
Journal of Business and Finance     Open Access   (Followers: 2)
Journal of Business and Management     Open Access   (Followers: 1)
Journal of Business and Management Research     Open Access   (Followers: 1)
Journal of Business and Management Sciences     Open Access  
Journal of Business and Management Studies     Open Access  
Journal of Business and Psychology     Hybrid Journal   (Followers: 13)
Journal of Business and Social Review in Emerging Economies     Open Access  
Journal of Business and Social Sciences     Open Access  
Journal of Business and Social Sciences Research     Open Access  
Journal of Business and Technical Communication     Hybrid Journal   (Followers: 7)
Journal of Business and Technology (Dhaka)     Open Access  
Journal of Business Case Studies     Open Access   (Followers: 3)
Journal of Business Continuity & Emergency Planning     Full-text available via subscription   (Followers: 24)
Journal of Business Cycle Research     Hybrid Journal  
Journal of Business Economics     Hybrid Journal   (Followers: 6)
Journal of Business Economics and Finance     Open Access   (Followers: 3)
Journal of Business Economics and Management     Open Access   (Followers: 2)
Journal of Business Ethics     Hybrid Journal   (Followers: 56)
Journal of Business Ethics Education     Full-text available via subscription   (Followers: 4)
Journal of Business in The Digital Age     Open Access  
Journal of Business Research     Hybrid Journal   (Followers: 22)
Journal of Business Strategy     Hybrid Journal   (Followers: 7)
Journal of Business Studies     Open Access  
Journal of Business Studies Quarterly     Open Access  
Journal of Business Thought     Full-text available via subscription  
Journal of Business Venturing Insights     Hybrid Journal   (Followers: 7)
Journal of Centrum Cathedra     Open Access  
Journal of Chinese Economic and Business Studies     Hybrid Journal  
Journal of Choice Modelling     Hybrid Journal   (Followers: 2)
Journal of Cognition and Development     Hybrid Journal   (Followers: 5)
Journal of Commodity Markets     Full-text available via subscription   (Followers: 1)
Journal of Comparative Asian Development     Hybrid Journal   (Followers: 1)
Journal of Comparative Economics     Hybrid Journal   (Followers: 13)
Journal of Competition Law and Economics     Hybrid Journal   (Followers: 34)
Journal of Consumer Behaviour     Hybrid Journal   (Followers: 26)
Journal of Consumer Policy     Hybrid Journal   (Followers: 13)
Journal of Consumer Research     Full-text available via subscription   (Followers: 49)
Journal of Contemporary European Research     Open Access   (Followers: 16)
Journal of Corporate Finance     Hybrid Journal   (Followers: 42)
Journal of Creating Value     Full-text available via subscription  
Journal of Cultural Economics     Hybrid Journal   (Followers: 2)
Journal of Cultural Economy     Hybrid Journal   (Followers: 8)
Journal of Customer Behaviour     Full-text available via subscription   (Followers: 4)
Journal of Data and Information Science     Open Access   (Followers: 4)
Journal of Derivatives & Hedge Funds     Hybrid Journal   (Followers: 6)
Journal of Design, Business & Society     Hybrid Journal   (Followers: 1)
Journal of Developing Areas     Full-text available via subscription   (Followers: 5)
Journal of Development Economics     Hybrid Journal   (Followers: 114)
Journal of Development Policy and Practice     Hybrid Journal   (Followers: 3)
Journal of Development Studies     Hybrid Journal   (Followers: 51)
Journal of Developmental Entrepreneurship     Hybrid Journal   (Followers: 5)
Journal of East-West Business     Hybrid Journal  
Journal of Eastern European and Central Asian Research     Open Access   (Followers: 4)
Journal of Econometrics     Hybrid Journal   (Followers: 82)
Journal of Economic & Financial Studies     Open Access   (Followers: 3)
Journal of Economic & Social Policy     Full-text available via subscription   (Followers: 11)
Journal of Economic Behavior & Organization     Hybrid Journal   (Followers: 48)
Journal of Economic Development, Environment and People     Open Access   (Followers: 11)
Journal of Economic Dynamics and Control     Hybrid Journal   (Followers: 44)
Journal of Economic Geography     Hybrid Journal   (Followers: 28)
Journal of Economic Growth     Hybrid Journal   (Followers: 36)
Journal of Economic Inequality     Hybrid Journal   (Followers: 21)
Journal of Economic Integration     Full-text available via subscription   (Followers: 4)
Journal of Economic Interaction and Coordination     Hybrid Journal  
Journal of Economic Methodology     Hybrid Journal   (Followers: 3)
Journal of Economic Policy Reform     Hybrid Journal   (Followers: 5)
Journal of Economic Psychology     Hybrid Journal   (Followers: 20)
Journal of Economic Structures     Open Access  
Journal of Economic Studies     Hybrid Journal   (Followers: 5)
Journal of Economic Surveys     Hybrid Journal   (Followers: 23)
Journal of Economics     Hybrid Journal   (Followers: 16)
Journal of Economics & Management Strategy     Hybrid Journal   (Followers: 10)
Journal of Economics and Business     Hybrid Journal   (Followers: 15)
Journal of Economics and Financial Analysis     Open Access   (Followers: 3)
Journal of Economics and Management Sciences     Open Access  
Journal of Economics and Political Economy     Open Access   (Followers: 6)
Journal of Economics and Public Finance     Open Access   (Followers: 2)
Journal of Economics, Business, & Accountancy Ventura     Open Access  
Journal of Economics, Finance and Accounting Studies     Open Access  
Journal of Economics, Management and Trade     Open Access  
Journal of Education and Work     Hybrid Journal   (Followers: 12)
Journal of Education for Sustainable Development     Hybrid Journal   (Followers: 8)
Journal of Electronic Commerce in Organizations     Full-text available via subscription   (Followers: 1)
Journal of Empirical Finance     Hybrid Journal   (Followers: 40)
Journal of Engineering and Technology Management     Hybrid Journal   (Followers: 4)
Journal of Enterprising Culture     Hybrid Journal   (Followers: 2)
Journal of Entrepreneurship     Hybrid Journal   (Followers: 17)
Journal of Entrepreneurship and Business Innovation     Open Access   (Followers: 9)
Journal of Entrepreneurship and Innovation in Emerging Economies     Hybrid Journal   (Followers: 4)
Journal of Environment & Development     Hybrid Journal   (Followers: 5)
Journal of Ergonomics     Open Access   (Followers: 8)
Journal of European Industrial Training     Hybrid Journal   (Followers: 2)
Journal of European Integration     Hybrid Journal   (Followers: 46)
Journal of Evolutionary Economics     Hybrid Journal   (Followers: 7)
Journal of Evolutionary Studies in Business     Open Access  
Journal of Family and Economic Issues     Hybrid Journal   (Followers: 4)
Journal of Financial Crime     Hybrid Journal   (Followers: 248)
Journal of Financial Econometrics     Hybrid Journal   (Followers: 31)
Journal of Financial Intermediation     Hybrid Journal   (Followers: 47)
Journal of Financial Regulation and Compliance     Hybrid Journal   (Followers: 9)
Journal of Financial Research     Hybrid Journal   (Followers: 13)
Journal of Financial Risk Management     Open Access   (Followers: 7)
Journal of Gambling Business and Economics     Full-text available via subscription   (Followers: 2)
Journal of Global Business Review     Open Access  
Journal of Global Optimization     Hybrid Journal   (Followers: 6)
Journal of Hazardous Materials     Hybrid Journal   (Followers: 12)
Journal of Health Management     Hybrid Journal   (Followers: 10)
Journal of Health Organisation and Management     Hybrid Journal   (Followers: 29)
Journal of Housing Economics     Hybrid Journal   (Followers: 10)
Journal of Human Resource Costing & Accounting     Hybrid Journal   (Followers: 6)
Journal of Indian Business Research     Hybrid Journal  
Journal of Indonesian Economy and Business     Open Access   (Followers: 1)
Journal of Industrial Economics     Hybrid Journal   (Followers: 23)
Journal of Industrial Relations     Hybrid Journal   (Followers: 22)
Journal of Industry, Competition and Trade     Hybrid Journal   (Followers: 10)
Journal of Innovation & Knowledge     Full-text available via subscription   (Followers: 3)
Journal of Innovation in Business and Economics     Open Access   (Followers: 1)
Journal of Institutional Economics     Hybrid Journal   (Followers: 16)
Journal of Intellectual Capital     Hybrid Journal   (Followers: 1)
Journal of Intelligence Studies in Business     Open Access   (Followers: 1)
Journal of Intergenerational Relationships     Hybrid Journal   (Followers: 4)
Journal of International Business Studies     Hybrid Journal   (Followers: 47)
Journal of International Education in Business     Hybrid Journal   (Followers: 2)
Journal of International Management, Educational and Economics Perspectives     Open Access  
Journal of International Scientific Researches     Open Access  
Journal of Law and Economics     Full-text available via subscription   (Followers: 80)
Journal of Law, Economics, and Organization     Hybrid Journal   (Followers: 49)
Journal of Legal Studies     Full-text available via subscription   (Followers: 46)
Journal of Management Analytics     Hybrid Journal  
Journal of Management and Development Studies     Open Access   (Followers: 1)
Journal of Manufacturing Processes     Full-text available via subscription   (Followers: 8)
Journal of Mathematical Economics     Hybrid Journal   (Followers: 4)
Journal of Media Economics     Hybrid Journal   (Followers: 3)
Journal of Medical Economics     Hybrid Journal   (Followers: 6)
Journal of Money Laundering Control     Hybrid Journal   (Followers: 248)
Journal of Multi-Criteria Decision Analysis     Hybrid Journal   (Followers: 1)
Journal of Multinational Financial Management     Hybrid Journal   (Followers: 5)
Journal of Nepalese Business Studies     Open Access  
Journal of Neuroscience, Psychology, and Economics     Full-text available via subscription   (Followers: 10)
Journal of New Business Ventures     Full-text available via subscription  
Journal of Nonprofit Education and Leadership     Full-text available via subscription   (Followers: 10)
Journal of Open Innovation : Technology, Market, and Complexity     Open Access   (Followers: 1)
Journal of Operations and Strategic Planning     Hybrid Journal  
Journal of Organizational Behavior     Hybrid Journal   (Followers: 60)
Journal of Organizational Behavior Management     Hybrid Journal   (Followers: 18)
Journal of Organizational Computing and Electronic Commerce     Hybrid Journal   (Followers: 1)
Journal of Participation and Employee Ownership     Hybrid Journal  
Journal of Payments Strategy & Systems     Full-text available via subscription   (Followers: 4)
Journal of Peasant Studies     Hybrid Journal   (Followers: 28)

  First | 1 2 3 4 5 6 7 | Last

Similar Journals
Journal Cover
Journal of Business and Finance
Number of Followers: 2  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2308-7714 - ISSN (Online) 2305-1825
Published by eSci Journals Publishing Homepage  [7 journals]
  • Numerical simulation of fluid-structure interaction to predict the
           response of bladeless wind turbines to wind-induced vibrations in compact
           cities

    • Authors: Cristian Andrade-Terán
      Pages: 1 - 16
      Abstract: This article presents an analysis of the Fluid-Structure response of bladeless wind turbines that work by induced aeroelastic resonance, which can be used in cities or small towns to form part of sustainable urban planning. In it, numerical simulations of the behavior of the wind and the effect called Von Karman Vortices that it produces when surrounding the structure of the wind turbine are carried out, taking as input data the wind speeds measured by the Mariscal Sucre Meteorological Station in Quito. CFD simulations determine the excitation signal caused by the different existing wind flows, the effects that these oscillations cause on the structure are simulated through a modal study and harmonic response to resonance. The results obtained show a proportional increase in the frequency and amplitude of the vortex shedding to the increase in wind speed, causing different excitation signals that cause the wind turbine to oscillate with amplitudes between 6 and 11 cm. Finally, the transient simulations show that the presence of houses and buildings in the vicinity where the wind turbine is installed causes the direction of the vortex street to vary, as well as alterations in the frequency and amplitude of the excitation.
      PubDate: 2022-04-01
      DOI: 10.29019/enfoqueute.796
      Issue No: Vol. 13, No. 2 (2022)
       
  • Multi-stage solar desalination system for water production in coastal
           areas of Ecuador

    • Authors: Esteban Urresta, Marcelo Moya Cajas, Andres Campana, Dario Rodríguez
      Pages: 1 - 22
      Abstract: A solar desalination system with heat recovery has been developed for coastal areas of Ecuador with a shortage of freshwater. The prototype consists of a 3-stage distillation tower connected to a flat plate solar collector. The solar energy absorbed by the collector is transferred by natural circulation to the distillation tower, wherein the heat of condensation of water is recovered in each stage to increase distillate output. The modular design of the equipment allows water production to be varied, from a few liters to more than a cubic meter per day. The prototype has few moving parts and can be rapidly disassembled and assembled, greatly facilitating its operation and maintenance. The average monthly production of the desalination unit varies between 4.3 and 5.8 liters per day (2.44 and 3.29 kg/m2). A mathematical model was created to analyze system performance. The accuracy of this model was improved by experimentally evaluating the convection heat transfer coefficients in the distillation tower. A simulation program was developed in Matlab-Simulink to predict the temperature profiles, distillate output, and heat flows in the unit. The simulation results for one day of prototype operation were very satisfactory, with a difference of only 7.7 % between theoretical and experimental data. The simulation was also used to analyze improvements in equipment performance, which determined that freshwater yield could be increased by up to 107 %.
      PubDate: 2022-01-14
      DOI: 10.29019/enfoqueute.781
      Issue No: Vol. 13, No. 2 (2022)
       
  • Retention of vitamin C in the processing of canned cupuassu pulp
           (Theobroma grandiflorum)

    • Authors: Robert Tecse-Tecsi, Virne Mego-Mego, Miguel Chávez-Pinchi, Lastenia Cutipa-Chávez, Luis Vargas-Vásquez
      Pages: 17 - 30
      Abstract: The cupuassu pulp is a fruit with a high content of pectins and ascorbic acid harvested in the Amazon of Eastern America for its exquisite characteristics of aroma, flavor and texture; however, the processing of canned food for human consumption in Madre de Dios - Peru is questionable, due to the inadequate handling and heat treatment of the fruit. The objective of the study was to evaluate the stability of the preservation of vitamin C in the processing of canned cupuassu pulp. For this, an experimental design was carried out in four stages: 1) characterization of the fruit, 2) determination of the heat treatment, 3) analysis of the variation of vitamin C and 4) analysis of the canned pulp. The effect of the process was evaluated in triplicate and a Completely Random Design was applied to analyze the statistical differences using the Statgraphys Centurion program. Among the results, it stands out that the pH (3.05 ± 0.50) and acidity (1.54 ± 0.80) of the canning are similar to the raw material. Likewise, a significant increase in soluble solids (Brix) was found with respect to fresh fruit. It is concluded that the total retention of vitamin C of the canned cupuassu pulp was 49.10 %.
      PubDate: 2022-04-01
      DOI: 10.29019/enfoqueute.805
      Issue No: Vol. 13, No. 2 (2022)
       
  • Telecommuting as a Sustainable Transportation Measure in Ecuador

    • Authors: Alvaro Nicolás Corral Naveda
      Pages: 23 - 41
      Abstract: The purpose of this article is to provide information to determine that telecommuting in Ecuador can be used as a measure of sustainable transport. Briefly, sustainable development is described, and certain definitions and approaches related to sustainable transport are covered, for instance, the Avoid-Shift-Improve (ASI) approach, as well as the Transport Demand Management (TDM), which serve to validate from a conceptual point of view the application and usefulness of telecommuting. An overview of the current situation in the transport sector in Ecuador is analyzed; the final energy demand; the environmental aspects related to transport, and the amount of public and private employees that are telecommuting. Taking into consideration some hypothesis, such as car ownership rate, the total amount of kilometers driven per year, the assumption of the distance travelled by employees who take public transportation; the assumptions helped to determine the savings that can be obtained through telecommuting in the present time. Therefore, these results would provide adequate information for decision makers to establish a conclusive pronouncement on whether or not support telecommuting as a valid working approach, and to develop the necessary policies to maintain it over time.
      PubDate: 2022-01-14
      DOI: 10.29019/enfoqueute.786
      Issue No: Vol. 13, No. 2 (2022)
       
  • Literature Review of Reverse Logistic, applications and future trends

    • Authors: Jorge Campoverde, Martha Helena Carrillo, Jonnathan Jiménez Yumbla, Raúl Roldán Nariño, Diego Loyola, Katherine Coronel Pangol
      Pages: 31 - 47
      Abstract: This article presents a review of the literature on Reverse Logistics (RL) research, application cases and exploration. Various databases were used to retrieve articles. This review has allowed to analyze initial concepts of RL and complementary ones with new optics and arguments developed by various authors. The main contribution is the taxonomy proposed in the development of the article. It was made up of relationship of themes and terms found in the literary review. Also, the most important fields of application and future trends in RL have been identified, where it has been determined that it is necessary to extend the analysis of RL towards an economic, social, cultural and environmental perspective.
      PubDate: 2022-04-01
      DOI: 10.29019/enfoqueute.782
      Issue No: Vol. 13, No. 2 (2022)
       
  • Influence of the Driving Cycle, Type of Vehicle and Travel Conditions in
           the Cinematic Variables of the Routes in Urban Buses. Case Study
           Ibarra-Ecuador

    • Authors: Rommel Imbaquingo Navarrete, Ramiro Rosero Añazco, Fredy Rosero Obando, Zamir Mera Rosero, Fausto Tapia Gudiño, Jordan Ramirez Martínez
      Pages: 42 - 57
      Abstract: Latin American cities have pollution and traffic problems due to the lack of research and planning in the transport sector. In Ecuador, the characteristics of the transport fleets and their kinematics in the city have not been determined. This study analyzes in detail the kinematic characteristics of each public transport route in the city of Ibarra-Ecuador using GPS georeferencing equipment for each second of travel. 22 urban bus routes were monitored evaluating 186 buses in 832 trips, where it was determined that the average speed, acceleration and deceleration depend mainly on three factors: route, city sector and vehicle model. Other factors such as operator, age of driver, travel times and time slot did not show greater significance in influencing the kinematic variables under study, so it is not considered within the research study.
      PubDate: 2022-01-14
      DOI: 10.29019/enfoqueute.770
      Issue No: Vol. 13, No. 2 (2022)
       
  • Modeling and computational simulation of Piptocoma discolor (Pigüe) fluid
           for combustión optimization in Ecuador

    • Authors: Juan Gonzalez, Deny Oliva M, David Zambrano Vera, Rubén Darío Ledesma, Mario Jorge Bonilla, Erika Clara Casco G, Édison Ernesto Zúñiga
      Pages: 48 - 67
      Abstract: Computational modeling and simulation represents a competitive and functional tool that effectively supports the study of thermochemical behavior in combustion optimization, guaranteeing reliable results through modeling, design and allowed the validation of excess thermodynamic properties applied for combustion. of the biomass of Piptocoma discolor (pigüe) from the Amazonian region of Ecuador and Latin America. The model parameters were physical, chemical and thermal through computational fluid dynamics in combustion optimization. And the mathematical model of combustion was obtained under the transport method of the species. In the simulation, the variables of primary air flow and moisture content were observed. The variable of the combustion parameters were N2, O2, CO, H, pressure, temperature, humidity, total energy and burning time of the biomass particles. The geometric configuration was developed according to the fundamental principles of CFD within Ansys Fluent to obtain the behavior of speed, turbulence, pressure, etc. of the composition of the optimal fuel 91.75% of a complete combustion and compared to other species that show 86% of the reactions of the combustion of the species.
      PubDate: 2022-04-01
      DOI: 10.29019/enfoqueute.795
      Issue No: Vol. 13, No. 2 (2022)
       
  • Sacha Inchi Energy Bars: Formulation optimization with Statistical Mix
           Design

    • Authors: Katherine Verduga, Jorge Luis Santamaría, Gilda Gordillo, Carolina Montero
      Pages: 58 - 72
      Abstract: In this work, the optimization results are presented in the formulation of an energy bar of sacha inchi (Plukenetia volubilis), applying the statistical design of mixtures for the analysis of composition and caloric power in the bar. Energy bars consisting of amaranth, quinoa, dehydrated pineapple, oats, honey and sacha inchi were developed. In each composition, the amounts of honey and sacha inchi were modified, selecting three bars with the greatest difference between their compositions and caloric power. When conducting an acceptability analysis based on the application of a survey, the potential consumers turned out to be people between 19 and 24 years old. In addition to performing an evaluation of the caloric intake to all the bars produced, a compositional or proximal analysis was carried out on the bar with the greatest acceptance, on the basis of which new formulations were developed, maintaining the caloric intake value and validating the acceptance by the consumer in each new formulation. Concluding that there are significant differences regarding the acceptance of the optimized and non-optimized bar, since the non-optimized bar has a higher content of sacha inchi than the non-optimized one (35 % wt and 30 % wt, respectively) and in terms of honey content, the non-optimized bar has a higher content than the optimized one (30 % wt and 20 % wt, respectively). An alternative energy bar was obtained that promotes the consumption of native cereals and lipids that also have a great nutritional contribution.
      PubDate: 2022-01-14
      DOI: 10.29019/enfoqueute.783
      Issue No: Vol. 13, No. 2 (2022)
       
  • Characterization of energy consumption agents in the residential sector of
           Ecuador based on a national survey and geographic information systems for
           modelling energy systems

    • Authors: Diego Moya, Dennis Copara, Jorge Amores, Manolo Muñoz Espinoza, Ángel Pérez-Navarro
      Pages: 68 - 97
      Abstract: The residential sector is an example of the challenges that arise when modelling the heterogeneity of the energy system to assess energy policy. Some of the characteristics that influence the supply and demand of energy in the residential sector are the type of consumption, household income, family composition, type of dwelling, the climatic zone of residence, among others. The objective of this research is to characterize the agents of energy consumption in the residential sector of Ecuador. To achieve this goal, this article presents a methodology that combines a national survey (online and door-to-door) with Geographic Information Systems (GIS). The survey allows defining the main motivations, investment objectives and decision method of the agents when renewing or maintaining home energy technologies. For this, the agents have been classified based on their income level. GIS allows the agents to be spatially located and to have an estimate of the population that belongs to each agent by income level. The results are presented by income level for each group of agents and the agents are geolocated, characterizing them spatially. The quantitative attributes of each agent are determined in order to be used in energy systems modelling.
      PubDate: 2022-04-01
      DOI: 10.29019/enfoqueute.801
      Issue No: Vol. 13, No. 2 (2022)
       
  • Management of Open Government and Use of The Transparency Portal in a
           Peruvian Public University

    • Authors: John Ruiz-Cueva, Lloy Pinedo-Tuanama, Percy Barbarán-Mozo, Luis Pretell-Paredes
      Pages: 73 - 81
      Abstract: Peruvian universities are obliged to articulate their policies under an Open Government (GA) model according to Law n° 27 806 on Transparency and Access to Public Information, in order to guarantee the transparency of institutional management, through the implementation of tools, as web portals, that guarantee a democratic digital participation. The objective of the study was to determine the relationship between Open Government management and the use of the transparency portal in a Peruvian public university. To do this, a basic research with a quantitative approach and a correlational not experimental design was carried out. A survey was applied through two questionnaires to a sample of 48 workers in charge of publishing information. The results and conclusions reveal that the level of open government management and the use of a transparency portal are acceptable, with a direct correlation (r = 0.5) and with a sig. unilateral equal to 0.000 (p value <0.01). However, there is mistrust about the management of open government and the usefulness of the portal. In other words, the higher institution suffers from strategies or policies of government openness, which causes low public participation in the management of the university government.
      PubDate: 2022-01-14
      DOI: 10.29019/enfoqueute.799
      Issue No: Vol. 13, No. 2 (2022)
       
  • Design of a Robot Prototype with Rocker Geometry-Bogie

    • Authors: Christian Montaleza, Xavier Mayorga, Jimmy Gallegos, Rogelio León
      Pages: 82 - 96
      Abstract: In this research a Rocker-Bogie type suspension geometry is designed and validated based on the analysis of the degrees of freedom, for its future implementation within the space exploration industry sector, having as main purpose the collection and transportation of garbage and waste to strategic sectors within the facilities, avoiding obstacles of different levels, although it could also be applied in the industrial, agricultural and mining areas, where a robust and stable system is required. We start by establishing a safety factor, determined through coefficients that involve safety and economy, then we calculate the dimensions and forces to be supported by the structural elements known as Rocker and Bogie, which are responsible for transmitting the support to the chassis as well as providing support to the connections for the axle components and motors for the wheels. The design and calculation of these elements, depends on the robot prototype being able to move through irregular fields avoiding obstacles such as: surface anomalies, potholes, rocks and curbs. For the validation of the prototype design, a static analysis of the structural elements (Rocker and Bogie) is performed by means of the Von Misses parameter, obtaining a high level of safety before rupture. Subsequently, the simulation of the prototype is executed based on a track created in the software, analyzing parameters of speed, acceleration and displacements in the axes X, Y. Finally, the results obtained from the simulation are compared based mainly on height and maximum length between front and rear axles, being crucial the maximum permissible angle of inclination.
      PubDate: 2022-01-14
      DOI: 10.29019/enfoqueute.804
      Issue No: Vol. 13, No. 2 (2022)
       
  • Insecticidal potential of some indigenous weeds extracts of Bahawalpur
           Pakistan againstdusky cotton bug (Oxycarenus hyalinipennis) (Costa)
           (Hemiptera: Lygaidae) under laboratory conditions

    • Authors: Fatima Noor ul Huda, Muhammad Hassan, Muhammad Iqbal, Moazzam Jamil, Javaid Iqbal
      Pages: 98 - 107
      Abstract: Owing to large scale use of chemical insecticides there is always need to find new alternatives to chemical insecticides. This study evaluated the aqueous extracts of three weeds namely Datura alba (Nees), Withania somnifera (Linnaeus) and Chenopodium album (Linnaeus) for insecticidal potential against Oxycarenus hyalinipennis (Costa) (Hemiptera: Lygaeidae) under laboratory conditions. Extracts were prepared from three plant parts e.g., leaves, stems and roots and applied at five concentrations ranging from 1 to 20 %. To check the mortality not because of weed extracts control treatment (water only) was also included as sixth treatment. Mortality of pest insects was assessed after three exposure periods e.g., 24h, 48 hand 72 h. Among the three weeds tested, mortality was more due to extract of D. alba weed which thus proved more toxic compared to other two weeds. Among plant parts, root extracts were more potent than leaves and stem extracts and the more concentration of 20 per cent usually resulted in maximum mortality. Maximum mortality of insects was after 72 h period followed by 48 h and minimum was after 24 h period. However maximum mortality of 60 % in case of D. alba warrants attention towards the options of either increasing concentration (> 20 %) of this extract or to evaluate other extraction type e.g., ethanolic extract to gain maximum mortality against this notorious pest.
      PubDate: 2022-04-01
      DOI: 10.29019/enfoqueute.806
      Issue No: Vol. 13, No. 2 (2022)
       
  • Nutritional energy in pos COVID-19 time in Peru

    • Authors: Laura Stefany Velásquez-Quispe, Carlini Alberto Ortiz-Meza, Ulises Gonzalo Calizaya-Mamani, Andrea Alejandra Zapana-Calderón, Gabriela Cristina Chire-Fajardo
      Pages: 1 - 28
      Abstract: The current COVID-19 pandemic is a disease that affects everyone. The Peruvian government has promoted the use of physical barriers; however, the immune system is an important defense against the virus that has not yet been motivated. The objectives were: to know the COVID-19 disease and its behavior; to know the nutritional diet of the population; to define the population at risk and to make food proposals in time of pandemic in Peru. For this, we used the information sources of scientists and science institutions. The results were: the main characteristics of the disease and its effect on the population at different ages and risk groups; described the feeding in six different regions of Peru, showing high simple carbohydrate intake and unbalanced nutritional energy, identified the nutrients of the biodiversity resources; defined the population with the risk; presented a diet for patients at home, those in critical condition and those who passed the disease; as well as general recommendations to the population that includes a comprehensive energy to achieve a healthy life. Culminates highlighting the importance of the role of the Peruvian State to promote a healthy life for the population.
      PubDate: 2021-10-01
      DOI: 10.29019/enfoqueute.761
      Issue No: Vol. 13, No. 2 (2021)
       
  • Comparison of descriptive sensory methods: flash profile and CATA
           questions to characterize muña infusions (Minthostachys mollis)

    • Authors: Reynaldo Justino Silva Paz, Gabriela N. Pichiuza Gonzales, Amparo Eccoña Sota
      Pages: 11 - 23
      Abstract: This study compares two descriptive methods based on consumers' perceptions of the sensory profile of Andean Mint (Muña) herbal teas. Participants evaluated five Andean Mint beverages using flash profile (FP) methodology (n=20) and Check-All-That-Apply (CATA) questions (n=105). For data analysis, generalized procruster analysis (GPA) was used for the PF and the Cochran Q test with correspondence analysis for the CATA questions. In addition, the RV coefficient was used to compare the sensory maps generated by both methods, using the R software and XLSTAT-test version. The results of the flash profile and CATA questions showed the formation of four groups, the first group consisting of samples D and E; the second, third and fourth groups, A, B and C, respectively. The RV coefficient was 0.94, indicating a very high similarity between both methods. These results demonstrate a high accuracy and reproducibility of sensory information obtained by consumers applying descriptive sensory methods in foods. Flash profiling is slower and more labor-intensive, making it suitable for exploratory studies with a smaller number of consumers, while CATA questions are faster and less labor-intensive, making it suitable for studies with a larger group of consumers.
      PubDate: 2021-07-01
      DOI: 10.29019/enfoqueute.730
      Issue No: Vol. 13, No. 2 (2021)
       
  • Viability of micro electrical networks with high penetration of renewable
           resources in urban areas: Case study of residential condominiums

    • Authors: Danny Javier Trujillo Sandoval, Fabricio Ismael Mosquera Velásquez, Edwin Marcelo García Torres
      Pages: 19 - 36
      Abstract: This study addresses the implementation of electrical micro-grids in urban areas as a response to the need for the insertion of renewable energies in different societies. In a first phase, the energy consumption profile of a condominium with a residential, commercial type load is characterized. and community, addressing the construction of said profile by lifting real loads and statistical criteria of use and coincidence. In the second phase, the natural resources, wind speed and solar radiation available in the study area are analyzed through the specialized software Homer Pro with latitude and longitude coordinates, subsequently the viability of the renewable electricity generation elements is analyzed and defined use, a possible generator set and its use of fuel are also proposed in order to complement the micro-grid in aspects of inertia and stability. With the energy demand and generation resources raised, architectural alternatives of a potential micro-network for the condominium are designed, simulations are carried out for isolated and interconnected cases with real values ​​of the environment and an economic analysis of the implementation, obtaining the viability of the micro network.
      PubDate: 2021-04-05
      DOI: 10.29019/enfoqueute.734
      Issue No: Vol. 13, No. 2 (2021)
       
  • Gelled emulsions enriched with chickpea flour as a potential substitute
           for animal fat

    • Authors: Melisa; G. Britez, Fabiana A. Rolhaiser, Carina L. Fernández, Ricardo A. Fogar, Mara Cristina Romero
      Pages: 24 - 35
      Abstract: The aim of the study was to develop gelled oil-in-water (O/W) emulsions, formulated with flax oil and chickpea flour with adequate structural and technological properties to be used as substitutes for animal fat. For this, two formulations were made, one without antioxidant and the other with the most widely used synthetic antioxidant in the industry. The chickpea flour and gelatin were hydrated for 3 hours with stirring at 3000 r. p. m., then they were heated for 30 minutes at 90 °C, cooled to 30 °C and processed again at 3000 r. p. m. for 30 seconds, while the oil phase was slowly incorporated with the emulsifying agent. The mixtures were placed in containers, allowed to stabilize at 25 °C for 30 minutes and then refrigerated for 24 hours. The syneresis, thermal stability, lipid oxidation, and infrared spectra of the samples were determined. Some significant differences can be observed for lipid oxidation (p <0.05), however, syneresis and thermal stability did not show differences (p> 0.05), with emulsions showing great water and fat retention capacity. This can be attributed to the protein structure resulting from heating the emulsion to cause gelation. The gelled emulsions obtained have adequate structural and technological properties, with lipid oxidation values under limit of detection of 1.59 mg MDA / kg sample. Given the characteristics of the emulsion obtained, a new field of application of technological strategies opens up to obtain animal fat substitutes as a healthy fat ingredient in meat products.
      PubDate: 2021-07-01
      DOI: 10.29019/enfoqueute.744
      Issue No: Vol. 13, No. 2 (2021)
       
  • Simulation of an active indirect hybrid dehydrator using ANSYS software

    • Authors: José Omar Cabrera Escobar, Francisco Jurado, David Vera
      Pages: 29 - 44
      Abstract: This research simulated the behavior of an active indirect hybrid dehydrator with the atmospheric conditions of the city of Riobamba because there is a need to dehydrate fruits and vegetables that in times of overproduction do not reach the market. Develops a methodology that allows a good approximation of the solution. It starts with the design of the dehydrator prototype and then undergoes a meshing process, once a good quality mesh is obtained, the physical models that are going to be used in the simulation are selected, then the physical properties and conditions are entered. of contour that corresponds to the climatic conditions of the city of Riobamba, for its later simulation; After simulating the prototype, it is verified that the curve of physical variables to be calculated has stabilized and the residual curves are below the set value. If it complies with these two steps, it can be determined that the simulation is correct. For the validation of the results obtained in the simulation, data from a similar investigation are used. It is necessary to carry out the simulation to be able to determine if the designed dehydrator can work in the optimal range of temperatures for dehydration.
      PubDate: 2021-10-01
      DOI: 10.29019/enfoqueute.771
      Issue No: Vol. 13, No. 2 (2021)
       
  • Dimensional analysis applied to jacketed shell and tube heat exchangers
           modeling

    • Authors: Andres Adrian Sánchez-Escalona, Yanán Camaraza-Medina, Yoalbys Retirado-Mediaceja, Ever Góngora-Leyva, Manuel Vega-Almaguer
      Pages: 36 - 50
      Abstract: Dimensional analysis was utilized on this research to establish a shortcut model for predicting hydrogen sulphide gas discharge temperature in jacketed shell and tube heat exchangers. Since the equipment belongs to an online industrial facility, the passive experimental method was applied. Selection of the heat transfer process parameters was followed by application of the Buckingham Pi-theorem and the repeating-variables technique. After formulation of the dimensionless groups, approximation of the explicit model equation was carried out through a least-squares multivariate linear regression. The model predictive ability performance was appraised by comparing predictions versus measured discharge temperatures, hence attaining a Pearson correlation of
      97.5 %, a mean absolute error of 2.1 K, and 1.7 % maximum deviations. The explicit equation that was obtained is pertinent to studied heat exchangers, when 0.55 ≤ ṁ1 ≤ 0.60, 1.06 ≤ ṁ2 ≤ 1.09, and 0.22 ≤ ṁ3 ≤ 0.24 (fluids flowrate, kg/s). It can be used as an alternative calculation method for quick anticipation of the equipment performance, which overcomes computation of the overall heat transfer coefficients.
      PubDate: 2021-07-01
      DOI: 10.29019/enfoqueute.745
      Issue No: Vol. 13, No. 2 (2021)
       
  • Architectures of Energy Harvesting Systems

    • Authors: Fabian Salazar, Maritza Núñez, Julio Cuji, Carlos Gordón
      Pages: 45 - 57
      Abstract: This article develops the literary review of the architectures of energy harvesting systems, identifying parameters such as: frequency, type of antenna, architecture (elements), among others. The methodology has four stages: a) Search for documentation, 10 systems were obtained, which were designated with the letter "S" accompanied by the article number; b) Reading of scientific documents; c) Extraction of information and architecture of the systems, where the stages of each system are detailed (which vary from 2 to 4), the working frequencies (300 KHz to 3.43 GHz, 2.45 GHz being the most used in systems for collecting radio frequency energy). In addition to using in certain systems, multiplier and rectifier circuits in different configurations: half wave, full wave; to later be stored in batteries or directly applied to devices; d) Documentation of the information extracted. Finally, after completing the literary review, it was observed that, in most articles, the systems have 3 stages: antenna, coupling, and rectification that transforms the received energy (alternating current) into direct current, their operation varies in frequency intervals of 1.8 to 2.4 GHz depending on the configuration of each system. Likewise, the product obtained is a consultation APP, with a selection menu of the different architectures investigated, which is a very beneficial contribution for researchers who wish to work in this area.
      PubDate: 2021-10-01
      DOI: 10.29019/enfoqueute.777
      Issue No: Vol. 13, No. 2 (2021)
       
  • Speed profile prediction model of rural roads in flat terrain in Costa
           Rica

    • Authors: Domingo E. Delgado Martínez, Liosber Medina García, José M. Ulate Zárate, René A. García Depestre
      Pages: 52 - 68
      Abstract: For some time, a commonly used engineering practice has been to evaluate the influence of the geometric design of roads on road safety by analyzing geometric design consistency. When evaluating geometric design consistency, it is necessary to know the operating speed profiles of the road to be analyzed. To this end, a variety of models of operating speed profiles are used, which are designed for the specific conditions of a particular region or country. For any analysis of highway geometric design, it is important to have information related to the horizontal and vertical layout of the project, as well as to the operating speed of vehicles. However, one limitation, which is often a source of error, is determining the operating speed of the vehicles. The aim of this paper is to develop models for predicting vehicle operating speed in Costa Rica by considering the characteristics of the road geometric design and of the existing vehicles. The procedure followed in the model included a series of steps, including from the analysis of the roads in the region to the development of models for predicting the speed profiles, as well as its validation. For the first time, different models are proposed for rural national routes in flat terrain in Costa Rica. The study demonstrates that the proposed equations provide for lower estimations errors, if compared to international models.
      PubDate: 2021-04-05
      DOI: 10.29019/enfoqueute.732
      Issue No: Vol. 13, No. 2 (2021)
       
  • Linkage scenarios of relational databases and ontologies: a systematic
           mapping

    • Authors: Yoan Antonio Lopez Rodriguez, Yusniel Hidalgo Delgado, Nemury Silega Martinez
      Pages: 58 - 75
      Abstract: Relational databases are one of the most used data sources. However, as a storage source, they present a group of shortcomings. It is complex to store semantic knowledge in relational databases. To solve the deficiencies in knowledge representation of relational databases, one trend has been to use ontologies. Ontologies possess a richer semantic and are closer to the end user vocabulary than relational database schemas. The objective of the present research was to carry out a systematic mapping about the scenarios where relational databases and ontologies are linked to provide a better integration, query, and visualization of stored data. The mapping was carried out by applying a methodological proposal established in the literature. As outcomes of the research, it was detected that the mapping of relational databases to ontologies and the ontologies usage for the integration of heterogeneous data sources were the most common scenarios. Likewise, trends and challenges were identified in each scenario, which might deserve further research efforts in the future.
      PubDate: 2021-10-01
      DOI: 10.29019/enfoqueute.759
      Issue No: Vol. 13, No. 2 (2021)
       
  • Removal of Heavy Metals (Cr+6, Ni, Zn) from Leachates of the Sanitary
           Landfill of the City of Veracruz, Mexico with Reactive Permeable Silica
           Sand Barriers

    • Authors: Manuel Alberto Susunaga Miranda, Bertha Maria Estévez Garrido, Benigno Ortíz Muñiz, Rodrigo Manuel Susunaga Estévez
      Pages: 65 - 78
      Abstract: The use of Permeable Reactive Barriers as a material for the removal of heavy metals from the leachates of the Sanitary Landfills has been verified for various materials, the Silica Sand from the coasts of the municipality of Alvarado Veracruz in Mexico have the characteristics of size and composition Required to be used for this purpose, samples of leachate were collected from the Sanitary Landfill of the City of Veracruz and the concentrations of Ni, Cr+6 and Zn were determined were respectively 0.0818, 0.186 and 0.224 mg/l, three columns were built of acrylic and were filled with 20, 30 and 40 cm of washed and dried Silica Sand, treated and stabilized leachate was passed through the porous medium at a flow of 1.7 ml/s, taking samples at 40.75, 115 , 165 and 235 seconds for each column and the efficiency for the removal of these heavy metals was measured and a significant reduction of these pollutants was found, ranging from 76 to 93%. for Nickel, from 44 to 81 % in the case of hexavalent Chromium and from 65 to 92% for Zinc for a maximum time of 235 seconds, which indicates that this material can be used in the remediation of leachate.
      PubDate: 2021-07-01
      DOI: 10.29019/enfoqueute.756
      Issue No: Vol. 13, No. 2 (2021)
       
  • Policies based on ISO 27001: 2013 and its influence on information
           security management in municipalities of Peru

    • Authors: Shonerly Bustamante García, Miguel Ángel Valles Coral, Immer Elías Cuellar Rodríguez , Danny Lévano Rodríguez
      Pages: 69 - 79
      Abstract: Information security management within an organization must be a well-defined process, as it involves a huge effort from users, area managers and other servers to know how to respond to suspicious events and how to manage identified vulnerabilities. The objective of this research was to improve information security management in a Peruvian district municipality, through the implementation of a policy model under ISO 27001: 2013. For this, a preexperimental investigation was carried out with a sample of 30 workers, to whom a questionnaire was applied to measure the degree of satisfaction with the implanted model. On average, more than 90 % of those surveyed recognized improvements in the municipality, marking a great difference between the pre and postest, from 49 % to 96 %. It is concluded that the security policy model, based on three fundamental pillars: confidentiality, integrity, and availability, improved information security management, guaranteeing adequate data protection.
      PubDate: 2021-04-05
      DOI: 10.29019/enfoqueute.743
      Issue No: Vol. 13, No. 2 (2021)
       
  • Advanced Oxidation as an Alternative Treatment for Wastewater. A Review

    • Authors: Miguel Angel López Ramírez, Olaya Pirene Castellanos Onorio, Fabiola Lango Reynoso, María del Refugio Castañeda Chávez, Jesús Montoya Mendoza, Cinthya Alejandra Sosa Villalobos, Benigno Ortiz Muñiz
      Pages: 76 - 87
      Abstract: Every year millions of cubic meters of wastewater are discharged into water bodies, which are treated in an inadequate way, these procedures being inefficient to achieve what is required by law or for use within industrial processes. In these cases, and due to the scarcity of water, the use of advanced oxidation processes is being used as an alternative treatment, which are based on physicochemical processes capable of producing profound changes in the chemical structure of pollutants, involving the generation and the use of transitory species with great oxidizing power, mainly the hydroxyl radical, which can be generated by photochemical means or by other forms of energy, and is highly effective in the oxidation of organic matter. This review aims to perform an analysis of the influence of treatments on the decontamination process.
      PubDate: 2021-10-01
      DOI: 10.29019/enfoqueute.769
      Issue No: Vol. 13, No. 2 (2021)
       
  • Efficiency in the removal of organic matter by wormfilters (Eisenia
           foetida) in domestic wastewater for rural areas

    • Authors: Jonathan Gustavo Castillo Sánchez, Jessica Estefanía Chimbo Solórzano
      Pages: 80 - 99
      Abstract: Inadequate management of domestic wastewater in rural areas, the discharge of which to water bodies without prior treatment, is a major problem of environmental pollution, as well as a risk to public health. The purpose of this study was to assess the efficiency in the removal of organic matter by lombrifilters in domestic wastewater in a rural area. Under experimental conditions, the wormfilter was designed using as a theoretical basis the Tohá treatment system, created by Dr. José Tohá, which consisted of four strata: sawdaught + Eisenia foetida, activated charcoal, gravel and river stones. The concentration of organic matter of the tributary was evaluated obtaining high concentrations of BOD5, COD, TSS and TS. T1 achieved the highest efficiency percentages with a volumetric flow of 1.8×10-2 l/s and TRH of 0.92 h obtaining 52.25 % for BOD5 and COD, 66.74 % TSS and 52.91 % TS. In this way, it was determined that the implementation of wormfilters based on Eisenia foetida for the removal of organic matter, represents an ecological and innovative treatment system that requires a low investment, is efficient and friendly to the environment.
      PubDate: 2021-04-05
      DOI: 10.29019/enfoqueute.746
      Issue No: Vol. 13, No. 2 (2021)
       
  • Convolutional Neural Network for Spatial Perception of InMoov Robot
           Through Stereoscopic Vision as an Assistive Technology

    • Authors: Juan Felipe Cortes Zarta, Yesica Alejandra Giraldo Tique, Carlos Felipe Vergara Ramirez
      Pages: 88 - 104
      Abstract: In the development of assistive robots, a major challenge is to improve the spatial perception of robots for object identification in various scenarios. For this purpose, it is necessary to develop tools for analysis and processing of artificial stereo vision data. For this reason, this paper describes a convolutional neural network (CNN) algorithm implemented on a Raspberry Pi 3, placed on the head of a replica of the open-source humanoid robot InMoov, to estimate the X, Y, Z position of an object within a controlled environment. This paper explains the construction of the InMoov robot head, the application of Transfer Learning to detect and segment an object within a controlled environment, the development of the CNN architecture, and, finally, the assignment and evaluation of training parameters. As a result, an estimated average error of 27 mm in the X coordinate, 21 mm in the Y coordinate, and 4 mm in the Z coordinate was obtained; data of great impact and necessary when using these coordinates in a robotic arm to reach and grab the object, a topic that remains pending for future work.
      PubDate: 2021-10-01
      DOI: 10.29019/enfoqueute.776
      Issue No: Vol. 13, No. 2 (2021)
       
  • THe SYSTEMATIC REVIEW OF THE LITERATURE FOR THE CREATION OF A SECURITY
           METHODOLOGY FOR ONLINE BANKING FINANCIAL PLATFORMS IN THE PROVINCE OF
           MANABÍ

    • Authors: Xavier Morales García
      Abstract: Online banking is real in these times, which has generated that banking services concur on the internet, but also online are prone to attacks by cybercriminals who intend to steal information for personal gain.
      This article is built based on the schematic search for information in scientific articles, using the SLR Systematic Literature Review methodology, using various aspects in its state of the art, where the state of the art will be reviewed by means of keywords that will allow you to search for the necessary information in these articles. After creating that, a filter of articles will be carried out that will allow the implementation of an SLR matrix to know the relevance of the information and finally where important information will be extracted to be processed to apply in data protection projects in the online banking of financial entities. . All these data will be subjected to a discussion about these results and through conclusions and recommendations. All results are submitted in a discussion about results and through conclusions and recommendations it will have tbe results about the Systematic Literature Results SLR
      Issue No: Vol. 13, No. 2
       
  • Dynamic encryption method for a file delivery service.

    • Authors: Joe Steven Mero Delgado
      Abstract: The documents sent through email have a very important relevance because information is transmitted that compromises individuals, companies and public institutions, framed this premise an alternative encryption method is generated, using asymmetric RSA and symmetric 3DES encryption algorithms with an expiration date on the documents sent, likewise this allowed the recipient of the encrypted documents to be the only entity authorized to access the document sent, as a result a more robust encryption was obtained where the data is not only encrypted if not that they expire after the scheduled time, thus protecting the information of third parties, thus fulfilling the purpose of protecting the information.
      Issue No: Vol. 13, No. 2
       
  • Tithonia Chemical composition of the foliage meal of Tithonia diversifolia

    • Authors: Danis Manuel Verdecia Acosta
      Abstract: To determine the composition of the foliage meal of Tithonia diversifolia, the foliage was collected at 70 days old. It was determined for the basic chemical composition, amino acid profile and content of the main secondary metabolites responsible for biological activity. The data using descriptive statistics and the mean and standard deviation were analyzed. The foliage meal of Tithonia diversifolia (FMTD) showed percentages of CP, Ca, P, NDF, FAD and ME of 22.23%, 2.62%, 0.013%, 45.7%, 29.8% and 6.09 MJ/kg, respectively. In FMTD, a wide variety of secondary metabolites were found, such as tannins, phenols, total condensed tannins, adhered total condensed tannins, free condensed tannins, flavonoids, alkaloids, saponins, triterpenes and steroids in concentrations of 5.35; 12.38; 13.7; 9.58; 4.15; 24.49; 0.86; 1.36; 7.71 and 10.75g/kg DM. The highest concentrations of amino acids in FMTD were for lysine, aspartic acid, glutamic acid, proline, glycine, alanine, valine, leucine, serine, and phenylalanine with percentages among 13-30 g/kg of crude protein. It is concluded that the foliage meal of Tithonia diversifolia is protein feed, with a good balance of amino acids and with a low content of secondary metabolites, which could be commonly used in non-ruminant animal diets to reduce production costs associated with feed.
      Issue No: Vol. 13, No. 2
       
  • Retrospective of flood scenarios in the coastal region of Ecuador: A
           vision of its impacts at a local urban scale

    • Authors: Español Español, Español Español, Español Español
      Abstract: The Santa Ana canton over the years has been affected by flood events causing economic, human and environmental impacts. The purpose of this research is to determine the impacts caused by floods through the validation and support of the bibliographic review that analyzes the characteristics of the contributing micro-basins, the spatial-temporal hydrogeomorphology of the Portoviejo River and the recurrence of floods in the urban area of Santa Ana canton. The methodology of this research was based on the compilation and analysis of bibliographic information on the records of flood events for the quantitative determination of the impacts and the situations of the affectations and the geomorphological parameters of the micro-basins. The Visquije, Chamucame and Taina estuaries are the largest tributaries in rainy seasons which generate floods in the center of the city when they collapse their contributing capacity. Over 20 years, 56 reports of emergencies due to flood events were recorded, considering that 18,959 were affected, including 350 evacuated, 204 injured and 5 deceased; the real estate affected is estimated at 4,134 homes, and hundreds of hectares of crops and public property.
      Issue No: Vol. 13, No. 2
       
  • Aprovechamiento de la cáscara de naranja (Citrus X sinensis) para la
           obtención de extracto esencial como un desengrasante natural.

    • Authors: Luis David Balarezo Saltos, María Belén Vinces Obando, Carlos Ricardo Delgado Villafuerte
      Abstract: The diagnosis of waste management was carried out through an interview with the company "Jugos Sunset", resulting in the total amount of the different processed fruits, half are waste without any type of use. The obtaining of the essential extract was developed under the technique of direct extraction by reflux, and for the determination of the quality of the extract, the parameters of: pH, total solids, % of acidity, relative density and determination of limonene were measured. Glycerin and betaine were used as factors of studies, being environmentally friendly substances. For the formulation of the natural degreaser, a bifactorial DCA was applied with the ADEVA and Tukey test at 95% significance. Resulting in significant difference only in the pH variable. In the application of the natural degreaser, the pH and turbidity were measured, in which, the interaction of 150 ml of orange extract and 15% of betaine (A2B1) obtained a greater detachment of lubricating grease, with a value of 2471 NTU and a pH of 5.46.
      Issue No: Vol. 13, No. 2
       
  • The Distribution of heavy metals (Pb, Cd and Cu) in water, sediments and
           fish of the Carrizal river, Manabí – Ecuador: an analysis

    • Authors: Ana Maria Aveiga Ortiz
      Abstract: Given the notable degradation of water resources, the objective of this research was to analyze the distribution of heavy metals (Pb, Cd and Cu) in water, sediments and fish from the Carrizal River, Manabí - Ecuador. 21 monitoring stations for water and sediment were established. In addition, specimens of Hoplias microlepis, Aequidens rivulatus and Oreochromis niloticus were captured, from which samples of liver, gill and muscle tissue were extracted. The concentrations of these elements were evaluated by atomic absorption spectrophotometry. Pb content in water of up to 0.41 mg/l was found, without significant differences between zones or sampling months; no levels of Cd or Cu were detected at the monitoring points. In sediments there was a maximum concentration of 0.03 mg/kg of Pb, being the levels of Cd and Cu not detectable. In gills of Hoplias microlepis (0.181 mg/kg) and in muscles of Aequidens rivulatus (0.149 mg/kg) the highest levels of Pb were obtained, while in tissues of Oreochromis niloticus it was not detected. The fish species studied presented undetectable levels of Cd or Cu. The level of Pb in surface water exceeds the established limit; evidencing a distribution and possible biomagnification of this metal.
      Issue No: Vol. 13, No. 2
       
  • Influence of the use of an information system on the management of
           histories clinics in small health centers in East Lima

    • Authors: Adiel Joshua Preciado Rodriguez
      Abstract: The present investigation subscribes to the relationship of influence between the management of clinical history processes and the implementation of a web system, bearing in mind the analysis, design and determination of a significant difference between traditional actions in patient care and the use of a medical records web system. This study held the same as ours to 84 patients who were applied the designed instrument through two representative groups, in which the results can be inferred with a margin of error of 5% and a confidence level of 95%, where depending on Therefore, the sample for the control group was 42 people and 42 for the intervention group. The results obtained show that the use of a web system significantly influenced the quality of clinical record management for this case in the "Virgen del Carmen La era" health center. In addition, the empirical evidence is visualized to subscribe that the implementation of a system to manage clinical records generates satisfaction in the face of cumbersome care methods, in addition, through the analysis of information it can be affirmed that the implementation of the referred system improves the management of clinical records, finding a significant difference in the pre-test and post-test applied.
      Issue No: Vol. 13, No. 2
       
  • Speech recognition based on Spanish accent acoustic model

    • Authors: Johanna Gabriela Plaza Salto, María Inés Acosta Urigüen, Marcos Patricio Orellana Cordero, Irene Priscila Cedillo Orellana, Jorge Luis Zambrano Martínez, Esteban Rodrigo Maisincho Urgilés
      Abstract: The objective of the article was to generate an Automatic Speech Recognition (ASR) model based on the translation from human voice to text, being considered as one of the branches of artificial intelligence. Voice analysis allows identifying information about the acoustics, phonetics, syntax, semantics of words, among other elements where ambiguity in terms, pronunciation errors, similar syntax but different semantics can be identified, which represent characteristics of the language. The model focused on the acoustic analysis of words proposing the generation of a methodology for acoustic recognition from speech transcripts from audios containing human voice and the error rate per word was considered to identify the accuracy of the model. The audios were taken from the Integrated Security Service ECU911 that represent emergency calls registered by the entity. The model was trained with the CMUSphinx tool for the Spanish language without internet connection. The results showed that the word error rate varies in relation to the number of audios; that is, the greater the number of audios, the smaller number of erroneous words and the greater the accuracy of the model. The investigation concluded by emphasizing the duration of each audio as a variable that affects the accuracy of the model.
      Issue No: Vol. 13, No. 2
       
  • Open data and open government in the regional and local governments of
           Peru

    • Authors: Cristian García-Estrella
      Abstract: The objective of the research is to carry out a review of the literature to establish a theoretical reference framework for the implementation of open data in open government strategies in Peru. For the development of this article, a systematic review of the scientific literature was carried out, articles from the Scopus database between the years 2017 and 2021 were taken into account. As a result of this study, it was determined that there is 1 regional government and 4 regional governments. that have implemented their open data portals, this represents 0.26% of the level of compliance, in addition, the level of compliance with the transparency dimension of open government is 38.16%. It is concluded that the Metropolitan Municipality of Lima complies with all the principles of open data and has a complete implementation in all categories, which can be accessed in different formats.
      Issue No: Vol. 13, No. 2
       
  • El Análisis de Riesgos Financieros en las Pymes en el Ecuador

    • Authors: Roque Juan Cagua Hidrovo
      Abstract: The analysis of financial risks in SMEs in Ecuador is of utmost importance when it comes to requiring financing to fill the cash deficit, or to invest in new projects to expand business activity; these companies are more sensitive to market uncertainty and are exposed to financial risks; Investors must overcome some factors when investing, required by the national financial system and the market in general. Therefore, the objective of this document is to analyze financial risks in SMEs through a conceptual approach; for which the following risks have been described: liquidity risks, interest risks, exchange risk, credit risks, market risks and operational risks. It is also important to mention that in Ecuador and in general the productive sector has suffered serious deterioration, due to the health emergency caused by the COVID-19 coronavirus pandemic; where SMEs must reorganize in all aspects, administrative and financial. A descriptive study of the financial risks that affect the growth of small and medium-sized companies in Ecuador was developed. Through the analysis, it was identified that the risks allow us to know the impact of each risk, it depends on the retrospective occurrence and according to the behavior of the risk. The implementation of a methodology depends on the amount of risks that are identified in the company, in this study it is oriented to financial risks, however, risks in general are taken as a basis, knowing the scope of analysis. Consequently, it is concluded that; Financial risks are more evident in companies, they have taken on more and more space in business management, the administration of companies has taken great interest in exhaustive control and implementing measures to prevent situations that compromise resources of the organization and third parties Therefore, administrators must implement control measures and ensure that the organization does not lose its objectivity in the development of management.
      Issue No: Vol. 13, No. 2
       
  • Physicochemical and biological characterization of leachate from the
           uncontrolled final disposal site in Tlapacoyan, Veracruz, Mexico

    • Authors: Miguel Angel López Ramírez
      Abstract: One of the main problems in Mexico is contamination by leachates produced in final waste disposal sites, since they are highly toxic and damage the biota. This research focuses on determining the characteristics of the leachate produced in the uncontrolled final disposal site of the municipality of Tlapacoyan, Veracruz, Mexico. As a result, it was determined that the parameters that cause damage to the biota are total nitrogen (152,759 mg L-1), mercury (0.006 mg L-1), cadmium (0.003 mg L-1), copper (0.052 mg L-1), chromium (0.0731 mg L-1), nickel (0.0524 mg L-1), lead (mg L-1) and total coliforms (>2400) by not meeting at least one of the national and international standards of maximum permissible limits, it was also determined that the leachate produced is mature and poorly biodegradable (BOD/COD=0.018) so typical or bioremediation methods are not recommended for its treatment.
      Issue No: Vol. 13, No. 2
       
  • (Strategic Plan as a competitive guide for MSMEs based on the 3Cs model
           and new technologies. Case: Cloud Computing in Azogues city)

    • Authors: CRISTIAN CACERES
      Abstract: Introduction: MiPymes in the Azogues city have become the largest generators of employment and productivity thanks to the entrepreneurship of many people; however, not all of them carry out a marketing process that allows them to improve their productivity. Objective: to develop a strategic plan based on new technologies and applying Kenichi Ohmae's 3C's model, focused on the Corporation, Competition and Clients. The use of Cloud Computing in Azogues city is analyzed. Method: application nature, field research to collect the necessary data. Results: there is little knowledge about Cloud Computing in these companies, and most lack marketing planning, so it is important to execute a strategic plan to improve their productivity. A web services platform adjusted to the needs of these companies was implemented, which will serve as a starting point for their digital transformation. Conclusions: the implementation of the 3 C's model and the new technologies offer the opportunity to improve the commercial activities of these MSMEs, the effectiveness increases if there is external support from professionals in the area, who define what each company needs.
      Issue No: Vol. 13, No. 2
       
  • (Characterization of energy consumption agents in the residential sector
           of Ecuador based on a national survey and Geographic Information Systems
           for modelling energy systems)

    • Authors: Manolo Muñoz Espinoza
      Abstract: The residential sector is an example of the challenges that arise when modelling the heterogeneity of the energy system to assess energy policy. Some of the characteristics that influence the supply and demand of energy in the residential sector are the type of consumption, household income, family composition, type of dwelling, the climatic zone of residence, among others. The objective of this research is to characterize the agents of energy consumption in the residential sector of Ecuador. To achieve this goal, this article presents a methodology that combines a national survey (online and door-to-door) with Geographic Information Systems (GIS). The survey allows defining the main motivations, investment objectives and decision method of the agents when renewing or maintaining home energy technologies. For this, the agents have been classified based on their income level. GIS allows the agents to be spatially located and to have an estimate of the population that belongs to each agent by income level. The results are presented by income level for each group of agents and the agents are geolocated, characterizing them spatially. The quantitative attributes of each agent are determined in order to be used in energy systems modelling.
      Issue No: Vol. 13, No. 2
       
  • THE THE FRONTEND. ADAPTIVE WEB DESIGN AND RESPONSIVE WEB DESIGN FOR WEB
           APPLICATION DEVELOPMENT.

    • Authors: Jhonny Chávez, Walter Daniel Zambrano Romero , Emilio Antonio Cedeño Palma, Dannyll Michellc Zambrano Zambrano, Gabriel Agustín Cotera Ramírez
      Abstract: El desarrollo web ha evolucionado a gran escala, en el presente artículo se realizó una comparativa entre dos importantes marcos de diseño que son indispensables para el desarrollo de interfaces web, como son el marco responsivo y adaptativo, destacando sus principales ventajas y diferencias a través del método experimental, propiamente enfocado en el desarrollo de un portal web, con el objetivo de mostrar información de publicaciones científicas realizadas por las Facultades de la Universidad Técnica de Manabí, para el estudio comparativo se usó la herramienta Google Page Speed Insights, donde se aplicaron métricas de evaluación impuestas por W3C, con respecto al rendimiento y optimización. Para garantizar la calidad de la investigación se aplicó el método Delphi, en un cuestionario dirigido a 50 Docentes de diferentes Universidades Ecuatorianas, con la finalidad de conocer el marco de diseño más adecuado al momento de desarrollar y producir sistemas web.
      Issue No: Vol. 13, No. 2
       
  • Quick method for penetration testing. A case study

    • Authors: Martin Gonzalez
      Abstract: This research develops a method for penetration testing execution, that it’s easy and fast to deploy, especially for small companies that do not have IT staff or have limited staff in this area. To achieve this, the developed method is based on the execution of automated tools, while providing techniques and processes that are necessary for its proper implementation. The application of the case study allowed to verify that the developed method is effective, fast and optimizes the use of resources. The results demonstrate a lack of awareness of companies in cybersecurity related issues and reveal little knowledge of IT professionals in this topic.
      Issue No: Vol. 13, No. 2
       
  • Detection of motorcyclists without a safety helmet through YOLO: support
           for road safety

    • Authors: OSCAR JHAN MARCOS PEÑA CÁCERES
      Abstract: In the present investigation, the YOLOv4 algorithm based on deep learning was used with the objective of detecting people who wear a safety helmet while driving a motorcycle, as well as those who do not use a safety helmet while moving around. the streets of a city, violating road safety regulations. In this context, the proposed methodology consisted of seven phases that go from the determination of the data source to validation and deployment, in which the labellmg tool and the Google Colab online platform are used, due to their capacity and flexibility. in the work environment. The model was developed using 287 images, of which 80% correspond to training images, 15% validation and 5% to perform the tests. In addition to this, additional shots were taken at different times of the day in order to determine the behavior and precision of the model. The results show us that the trained model has a detection efficiency of 85% and using YOLOv5x could improve the detection quality by having a greater number of layers.
      Issue No: Vol. 13, No. 2
       
  • Evaluación de la adición de centeno (Secale cereale) en la formulación
           de cerveza artesanal belgian pale ale

    • Authors: Sheyling Segobia
      Abstract: Esta investigación se enfoca en la utilización del centeno malteado y sin maltear, en la elaboración de una cerveza artesanal estilo belgian pale ale, con el objetivo de innovar y explorar los atributos que brinda este cereal, además de evaluar los parámetros fisicoquímicos (color, pH, acidez, grado alcohólico, turbidez), microbiológicos (mohos y levaduras) y sensoriales (sabor, olor, color, textura). Se aplicó un diseño experimental con arreglo bifactorial A*B con 3 repeticiones por tratamiento y 1 testigo empleando la prueba Dunnett, en cuanto para el test sensorial la prueba de contrastes de Kruskal Wallis, utilizando el software estadístico SPSS Statistics. De forma tal que se evidenció que la adición del centeno malteado y sin maltear influyó significativamente en las características evaluadas en la cerveza artesanal, dando origen a un perfil propio de una belgian pale ale con el distintivo toque que otorga el centeno, en donde se establecieron como los tratamientos más destacados en el atributo de sabor y textura a T5 (80% malta base + centeno malteado), en olor se posicionó T1 (90% malta base + centeno malteado), y en color resaltó T4 (85% malta base + centeno sin maltear).
      Issue No: Vol. 13, No. 2
       
  • Integración de los componentes del Manejo Integrado de Plagas en el
           cultivo de Pisum sativum en la región Huánuco, Perú

    • Authors: AGUSTINA VALVERDE RODRIGUEZ
      Abstract: La investigación se ejecutó en dos periodos de siembra de Pisum sativum L, campaña agrícola 2019 y 2021, los datos registrados corresponden al periodo 2021 por haberse obtenido similares respuestas al ensayo anterior. El objetivo fue integrar de manera comparativa más de una estrategia de control para regular las plagas en el cultivo. En un diseño de bloques completamente al azar con 3 tratamientos, 4 repeticiones. Siendo los tratamientos: (T0) Sin aplicaciones, (T1) Barreras vivas de Zea mays + trampas a colores + extracto de Ruta chalepensis + cebos tóxicos, (T2) Barreras vivas de Lupinus mutabilis + trampas a colores + Bacillius thuringiensis + cebos tóxicos. Se realizaron las evaluaciones semanales para identificar los insectos, determinar la incidencia. Las especies comunes encontradas en el estudio y siendo el tratamiento T2 con la menor densidad poblacional de cada especie plaga; Agrotis sp con 0,67 a 2,33 larvas/parcela, Aphis sp entre 1,33 a 4 pulgones por cogollo, Bemisia sp con 5 a 7 mosca blanca por hoja, Epitrix sp entre 4 a 0/hoja y Liriomyza trifolii entre 3 a 4 larvas/hoja. Se concluye que la integración de los componene T2 son los de mayor eficiencia en la regulación de las plagas.
      Issue No: Vol. 13, No. 2
       
  • Dried muña leaves (minthostachys mollis): Modeling, kinetics and
           thermodynamic properties

    • Authors: Reynaldo Justino Silva Paz
      Abstract: The muña leaf is consumed as an infusion, it has pharmacological properties and is used to relieve digestive and respiratory symptoms. Therefore, drying is important for preservation and storage until use or processing. The objective of this research was to evaluate the influence of drying temperature on kinetics, diffusion coefficient and thermodynamic properties. We worked with muña leaves that were subjected to different pretreatments (bleached at 1% ascorbic acid, immersion in water at 60 ° C and without pre-treatment) dried at three temperatures (40, 50 and 60 ° C). The effective diffusion coefficient, activation energy, was determined and the drying process was described using eight mathematical models to represent the drying curve. The Logarithmic model was selected as the one with the best fit to represent the drying kinetics of the muña. Activation energy values ​​were similar between treatments. The increase in temperature promotes: decrease in enthalpy and entropy; increase in Gibbs free energy and effective diffusion coefficient. Therefore, it is essential to reduce the water content by drying to maintain the quality of the muña leaves.
      Issue No: Vol. 13, No. 2
       
  • (Impact of social isolation produced by COVID 19 on eating habits and
           emotional states in Peru)

    • Authors: Flora Elizabeth Inocente Quiroz
      Abstract: This research describes the impact produced by COVID-19 during social isolation in the Peruvian population in the face of food and emotional states. A national survey was conducted with 1534 participants, where 79% between the ages of 18-29 (52% male) with multiple-choice questions and emoticons. According to food consumption, it was found that beans, legumes, dried fruits, water, eggs and rice showed an increase, although the consumption of fish-shellfish, sweets, sauces, salty or stuffed biscuits, ice cream-desserts, and dried fruits decreased. and feet. In addition, the application of emoticons allowed to express in an easy and intuitive way the emotional state, home service and the feeling of food consumption. The most used emoticons were: crazy or fun face, face that enjoys food and face with a protective mask. Furthermore, people indicated not eating excessively, feeling happy about the recovery of the environment, staying at home with the family. However, they were worried about the increase in prices. Likewise, 76% of the participants increased the use of cell phones, portable equipment and TV, 51% had the fear of losing their job, 54% had the fear of contracting the virus and 56% have reduced their physical activities, as a consequence of stress and emotional problems.
      Issue No: Vol. 13, No. 2
       
  • The Impact of the use of technological tools aquaculture productivity

    • Authors: Jeison Elí Sánchez Calle, Jhordani Guélac Gómez, Miguel Ángel Valles Coral
      Abstract: Aquaculture in Peru is booming, so it is necessary to implement production techniques and modernize the process to address a sustainable, efficient and competitive perspective. The objective of the review has been to identify the techniques used by countries with high competitiveness in the sector and to publicize the deficiency that exists in Peruvian aquaculture. The information has been obtained using the google academic search engine to facilitate the filtering of the information used, the articles taken cover the years 2016 and 2020, respectively. The review has made it possible to identify that technology plays an important role in the technification of the process, the countries that have applied technology today are positioned as aquaculture references. It is concluded that in order to position itself as an aquaculture benchmark, strategies, production policies and the implementation of technology and innovation in the process must be applied, and thus guarantee quality production according to market demand
      Issue No: Vol. 13, No. 2
       
  • Quick method for penetration testing. A case study.

    • Authors: Martin Gonzalez
      Abstract: This research develops a methodology for penetration testing execution, that it’s easy and fast to deploy, especially for small companies that do not have IT staff or have limited staff in this area. To achieve this, the developed methodology is based on the execution of automated tools, while providing techniques and processes that are necessary for its proper implementation. The application of the case study allowed to verify that the developed methodology is effective, fast and optimizes the use of resources. The results demonstrate a lack of awareness of companies in cybersecurity related issues and reveal little or no knowledge of IT professionals in this topic.
      Issue No: Vol. 13, No. 2
       
  • Dried muña leaves (minthostachys mollis): Modeling, kinetics and
           thermodynamic properties

    • Authors: Reynaldo Justino Silva Paz
      Abstract: The muña leaf is consumed as an infusion, it has pharmacological properties and is used to relieve digestive and respiratory symptoms. Therefore, drying is important for preservation and storage until use or processing. The objective of this research was to evaluate the influence of drying temperature on kinetics, diffusion coefficient and thermodynamic properties. We worked with muña leaves that were subjected to different pretreatments (bleached at 1% ascorbic acid, immersion in water at 60 ° C and without pre-treatment) dried at three temperatures (40, 50 and 60 ° C). The effective diffusion coefficient, activation energy, was determined and the drying process was described using eight mathematical models to represent the drying curve. The Logarithmic model was selected as the one with the best fit to represent the drying kinetics of the muña. Activation energy values ​​were similar between treatments. The increase in temperature promotes: decrease in enthalpy and entropy; increase in Gibbs free energy and effective diffusion coefficient. Therefore, it is essential to reduce the water content by drying to maintain the quality of the muña leaves.
      Issue No: Vol. 13, No. 2
       
  • Effect of beneficial fungi on Chaetanaphothrips signipennis (Bagnall)
           under controlled conditions

    • Authors: Alex Delgado
      Abstract: The production of muses is affected in their production due to the damages caused by the trips Chaetanaphothrips signipennis (Bagnall), with respect to the quality of the fruit. The objective of the present investigation was to evaluate the effect of beneficial fungus applications on C. signipennis under controlled conditions. Two isolates of Beauveria bassiana, Metarhizium sp., Lecanicillium sp., Purpureocillium lilacinum, and Trichoderma asperellum whose concentration was 1x108 spores / fungi plus a control were studied. The entomopathogenic fungi caused different percentages of insect mortality from 55% for T. asperellum, L. lecanii 86% and 100% for the other fungi and, in relation to spotting in the clusters, P. lilacinum (8%), T. asperellum (8%), and L. lecanii were the ones with the lowest percentage of damage, unlike the two isolates B. bassiana and Metarhizium that caused 100% mottled fruit or reddish spots.
      Issue No: Vol. 13, No. 2
       
  • Dangers of phishing and its impact on the financial sector: A review

    • Authors: Henry Carranza Narro, Lucas Ruiz Jara, Alberto Mendoza de los Santos
      Abstract: In recent years, Phishing has been the most used cyber threat to deceive people and harm them economically or socially, reaching a use of 59% followed by Malware with 39%, Malicious Domains with 22% and others less used threats. For this reason it is intended to show the dangers caused by phishing attacks and see their impact on the financial sector taking a specific period of time from 2016 to 2021, since between these years it was where the technology was most developed and at the same time the computer hazards. It seeks to answer the question posed: What are the dangers caused by phishing and its impact on the financial sector from 2016 to 2021' For this, certain objectives were set that were met in order to be able to meet using the information collected from the databases on the subject of the research. It was concluded that phishing affects the trust of users when carrying out online operations and in turn the reputation of entities focused on the financial system, causing an imbalance in its operation.
      Issue No: Vol. 13, No. 2
       
  • Analysis of an Urban Drainage System designed from the drainage design
           strategy in the city of Santa Clara

    • Authors: Carlos Lázaro Castillo García
      Abstract: In this article, the structural measures analysis to be applied at Hydrological Urban Area Capiro-Bengochea on Santa Clara city to carried out and reduce the impacts of extreme rainy fall events that affect the place and cause floods with effects on the inhabitants. With this, an engineering solution for storm drainage is projected the area, applying Sustainable Urban Drainage Systems methodologies and other classic ones combination. For this, the hydrological, hydraulic runoff modeling response, and its transit through the different structures in several rainy scenarios where used, obtaining encouraging results with the application of retention ponds and flow division works. In general, it has concluded that the system projected, is resistant to different extreme phenomena, which guarantees a long useful life and a high impact on the community.
      Issue No: Vol. 13, No. 2
       
  • The Biometric facial authentication system based on emotion recognition
           and blink counting to control supply in wholesale stores

    • Authors: NOOR MARIA DE LOS ANGELES AMAMBAL CORONADO, WAYNER KEYLOR ESPINOZA PEREZ, JERSSON ALEXIS CHILON NUÑEZ, ALBERTO CARLOS MENDOZA DE LOS SANTOS
      Abstract: In this article, the main objective of the implementation of a facial biometric authentication system based on emotion recognition and blink counting has been established to control the supply in wholesale stores. Biometric facial authentication has been applied in different areas of any company. This authentication mechanism is more efficient, since it allows the verification of the user's identity with greater accuracy. To achieve this objective, the concepts, stages, methods and techniques related to facial biometry are investigated, and the detection of vivacity is considered as the main factor to develop the system. Afterwards, the implementation of the aforementioned system is carried out, whose methodology is based on 6 steps. These steps start from user authentication, through face detection and identification, then emotion training and a comparison of these, followed by blink counting for the detection of vivacity. Finally, the program makes the decision of a correct or incorrect access. The results obtained demonstrate the efficiency of implementing this system for successful authentication and to prevent fraudulent acts. At the same time, some discussions are made regarding other works.
      Issue No: Vol. 13, No. 2
       
  • PROCESO DE AUDITORÍA DE SEGURIDAD DE LA INFORMACIÓN EN SISTEMA
           DE FACTURACIÓN

    • Authors: JHONATAN ADRIAN BARRETO
      Abstract: This research has been developed in order to establish an information security audit process in a billing control system, which may be capable of detecting anomalies or infractions carried out by employees in the systems. To achieve this purpose, a series of analyzes and information gathering were carried out and various objectives and specific points have been raised, which will help us to be clear about and fulfill the main objective that we have in this investigation and to detect any possible fraud that exists. Bearing in mind that the security of the database will be paramount, as it will help to maintain the integrity of the data and to be able to understand the activities that are carried out.
      Issue No: Vol. 13, No. 2
       
  • el Effect of biochar on the development of banana plants (Musa AAA) in
           farms with organic and conventional agriculture management

    • Authors: Salomon Barrezueta Unda, Alexander Condoy-Gorotiza, Stalin Sánchez-Pilcorema
      Abstract: El uso de enmiendas con biocarbon en los suelos bananeros, ha motivado la investigación con el objetivo de comparar los efectos de un biocarbón obtenido de la mazorca de cacao en el desarrollo de banano. El trabajo se desarrolló en dos fincas, una bajo un modelo de agricultura orgánica (FO) y otra convencional (FC). Las dosis por tratamiento en cada finca se conformaron de 10 g (T1), 30 g (T2) y 50 g (T3) de biocarbón + biofermento con Trichoderma spp.; a esta mezcla se agregó 100 g de Si2O (FO) y 100 g de urea (FC). Todos los tratamientos fueron aplicados al suelo frente al hijo. El mayor valor de altura de planta fue de 217,8 cm (FO, T2) y 266,7 (FC, T3), en grosor del pseudotallo las medias más altas fueron 41,1 cm (FO, T1) y 52,1 cm (FC, T3), registros muy superiores con respecto al control. En peso de racimo y número de manos, se obtuvo diferencias significativas (p≤0,05), en ambas fincas. Los resultados revelaron que los tratamientos, tienen un efecto positivo sobre el crecimiento de las plantas de banano en comparación con el control en las dos fincas.
      Issue No: Vol. 13, No. 2
       
  • Physicochemical analysis of colostrum breast milk donated in the lactation
           room of the Educational Medical Unit of an Argentine public university

    • Authors: Mara Cristina Romero
      Abstract: The aim of this study was to determine the composition of proteins, fats and the lipid profile of donated breast milk in the lactation unit of the Educational Medical Unit of the National University of Chaco Austral. To achieve this, breast milk from selected mothers was analyzed, which was collected between 1 to 3 days postpartum. The protein content, total fat, and lipid profile were determined using standardized techniques, to verify if there are variations in their composition. The minimum and maximum protein values were 2.37 ± 0.32 and 3.46 ± 0.86, and for total fat 4.50 ± 0.33 and 6.20 ± 0.86 g / 100 ml, being the main fatty acids myristic, palmitic, stearic, oleic and linoleic. Although it is an initial study, the nutritional composition of the samples coincides with that reported in the bibliography, highlighting the content of fatty acids detected.
      Issue No: Vol. 13, No. 2
       
  • Implementation of concepts and tools of the Lean Construction philosophy
           in the construction companies of the City of Cochabamba - Bolivia

    • Authors: Rodrigo Vergara Hinojosa, Joaquin Humberto Rocha, Nahúm Gamalier Cayo Chileno, Marialaura Herrera Rosas, Alejandra Araoz Campos
      Abstract: The objective of this study is to identify the strategies used by the construction companies of the city of Cochabamba-Bolivia in the execution of projects, considering the tools and concepts of Lean Construction. The methodology consisted of a survey of 63 companies in the city of Cochabamba-Bolivia through a questionnaire made up of 44 questions. Four aspects were consulted: a) profile of project managers, b) general company information, c) planning and execution of projects and d) knowledge of the Lean Construction philosophy. The results show that companies recognize the problems in productivity and generation of waste, but do not carry out specific solutions. On the other hand, companies have listened to and even implemented some Lean Construction tools; however, the majority (70%) do not know the philosophy. Although barriers to implementing the philosophy are identified, actions that can collaborate in its application are also highlighted, such as demonstrating results with benefits and training staff.
      Issue No: Vol. 13, No. 2
       
  • The agri-food chain with a focus on local development: the case of goat
           milk in Jimaguayú

    • Authors: Osvaldo Nápoles
      Abstract: The decisive role that goat dairy can play in facing economic, social and environmental challenges that affect the world population, mainly in developing countries, is internationally recognized. In Cuba, it has been shown that the benefits of these productions are not used. This work aims to characterize the goat milk agri-food chain in the municipality of Jimaguayú for its contribution to local development, from the use of endogenous potentialities. The study is descriptive-explanatory in nature. Mixed research methods were used with the systematic integration of methods of the theoretical and empirical level, such as analysis-synthesis, induction-deduction, participatory observation and the survey. It was evidenced that the goat dairy has the potential to positively impact the social, economic and environmental dimensions of local development in Jimaguayú, for which a chain approach management is required based on a methodology adjusted to the Cuban context. The results offer information to contribute to decision making on duly argued bases; in relation to the organization of production with a territorial approach and for the improvement of the Municipal Strategic Diagnosis as the base moment of the Municipal Strategic Planning.
      Issue No: Vol. 13, No. 2
       
  • Soil quality assessment in gold mining areas

    • Authors: Daniela Paz-Barzola, Kenny Escobar-Segovia, Samantha Jiménez Oyola
      Abstract: The objective of the study was to evaluate soil quality in population centers near gold mining areas. The concentration of heavy metals and metalloids (As, Cd, Cu, Cr, Ni, Pb, and Zn) was analyzed in soil samples collected in public areas, yards, gardens, and cultivation areas. As a result, it was identified that the concentration of Ni and Cr exceeded the maximum permissible limit (MPL) of the Ecuadorian regulations in 100% of the samples analyzed, while the concentration of Cu and Zn was higher in 90% of the sites sampled. Cd exceeded the MPL in 64% of the samples, and As and Pb exceeded the MPL in only 26% and 21% of the samples, respectively. Regarding pH analysis, values between 3.31 and 8.21 were obtained, indicating acidic conditions in 60% of the soil samples, possibly as a result of anthropogenic activity in the area. Strong positive correlations were detected between As-Cd, Cr-Ni, Cu-Ni, and moderate correlations between Cr-Cu, Pb-Zn. Cluster analysis indicated that cluster C1, characterized by a high content of potentially toxic elements, is mostly located south of the study area. These preliminary results can serve as a baseline for future research in the area, highlighting the importance of soil quality assessment in populated areas in mining zones.
      Issue No: Vol. 13, No. 2
       
  • Effect of charge loading during electrocoagulation in dairy wastewater

    • Authors: Jaime Alberto Cachay Melly
      Abstract: Electrocoagulation is frequently studied considering only the current or current density as a determining parameter when looking for the optimal conditions of wastewater treatment; however, these are correlated to the charge loading parameter that regulates the dose of metal to be dissolved. Due to this, the present study incorporates the charge loading to find the optimal conditions of treatment by electrocoagulation to the effluents of a dairy industry, “La Planta Piloto de Leche” of Universidad Nacional Agraria La Molina, taking as a variable response to the removal of turbidity. Work has been done in batch on prototypes of 2.2 liters of effective capacity. The aluminum and iron electrodes, acting as anode and cathode respectively, were the best materials for the treatment, in addition, the highest turbidity removal was achieved at a pH of 8 and a charge flow of 5.65 F/m3, achieved at 2 Ampere (2A) of supplied current and 10 minutes of treatment. Subsequently, the test under a constant load flow (5.65 F / m3) reaffirmed that at 2A and 10 minutes of electrochemical treatment, the highest removals of contaminants, mainly oils and greases, and turbidity are achieved.
      Issue No: Vol. 13, No. 2
       
  • Development of gluten-free biscuits evaluating their physicochemical and
           sensory parameters

    • Authors: Roxana Lizárraga
      Abstract: In Peru, the number of people suffering from celiac disease, intolerant or allergic to gluten has increased; but gluten-free food products have not been developed, due to the difficulty of their elaboration and implementation in the food industry. The objective of this research was to develop gluten-free biscuits from substitute flours, evaluating their physicochemical and sensory parameters. Eight different formulations were developed using 100% broad bean, chickpea, pea, kiwicha, quinoa, lentil, corn and bean flour. 100 consumers participated for this evaluation. A completely randomized design (DCA) and a randomized complete block design (DBCA) were used to the data from the physicochemical analysis and general acceptability, respectively. To describe the cookies, the mark all that apply (CATA) method was used and a correspondence analysis (AC) was applied. From the results obtained, the lentil biscuit presented a higher percentage of protein and fiber; although less amount of fat and carbohydrates compared to the other samples. Regarding color, the corn biscuit was the lightest because it presented greater luminosity (L *), but less redness (a *) and yellowness (b *). Corn and chickpea crackers had the highest acceptability scores.
      Issue No: Vol. 13, No. 2
       
  • Environmental evaluation at the Cement Commercialization Company of
           Camagüey

    • Authors: Daimy Godínez-Caraballo
      Abstract:
      Issue No: Vol. 13, No. 2
       
  • Psi Importance of IT security policies in accordance with ISO 27001 for
           small and medium-sized companies in Ecuador.

    • Authors: Alex Llano, Mónica Gaibor , Carla Cruz, José Cadena
      Abstract: This article presents the importance of executing good computer practices through the use of ISO 27001 standards in small and medium-sized companies in Ecuador, incorporating good management in TIC’s, minimizing risks and threats to business information, as well as its computer assets. The maturity levels for the management of information systems must be developed by internal and external clients, allowing them to increase their prestige and profitability with the improvement in business processes, guaranteeing the optimal operation of computer services to meet business objectives of compalies public, private and PYMES. To measure computer vulnerabilities, the information technology risk analysis matrix was used, allowing to identify threats and risks, these will be solved with the development of computer security policies to guarantee the reliability, integrity, availability of information and computer resources.
      Issue No: Vol. 13, No. 2
       
  • Removal of pollutants from wastewater using cationic polyelectrolyte
           extracted from moringa seeds (Moringa oleifera)

    • Authors: Teresa Vivas
      Abstract: This research aims to evaluate the efficiency of the cationic polyelectrolyte of Moringa oleifera in removing pollutants from wastewater. A completely randomized design was applied in a unifactorial arrangement, with four treatments and three repetitions. The cationic polyelectrolyte coagulant extracted from the moringa seed had a dose of 1, 2 and 4 ml and aluminum sulfate as a control. The variables analyzed in the research were: total suspended solids (TSS), turbidity and color, for which a sample of 9000 ml of residual water was taken, the physical characterization was carried out presenting 120 mg / l of TSS, 43.52 FAU of turbidity and 456 Pt / Co of color respectively. The treatment with the highest efficiency in removing TSS was the T2 treatment (2 ml) with 89%, however, there were no significant differences between treatments according to the ANOVA test (p: 0.707); Regarding the turbidity variable, treatment T1 (1 ml) was the one that stood out with the highest percentage of removal (28%); for the color variable, the treatment T1 (1 ml) was the one with the highest efficiency with 15.33%, both variables did not have significant differences between the treatments, so it is evident that the treatment based on moringa in its different concentrations is a good coagulant to remove pollutants in wastewater.
      Issue No: Vol. 13, No. 2
       
  • Geographic distribution model of the Andean Condor (Vultur Gryphus) in
           Ecuador

    • Authors: Christian Andrés García Rengifo, Daniel
      Abstract: The andean condor finds distributed around Venezuela, Colombia, Ecuador, Perú, Bolivia reaching Argentina. In ecuadorean territory, the andean condor is a badge bird that finds into danger of extinction, that is why is really important the caring and survival of this bird. The object of this investigation is to determinate the environmental variables that are related in order to the development of andean condor in the construction of a maximum entropy model finding in base of probabilities, the geographically suitable places to it's grouth. In order to developing, 69 nets were taken in ecuadorean territory and those were sized up by 23 environmental variables, being Bio 1 the environmental variable that more contributes on the establishment of the model with a 42.7% followed by Bio6 with a 16.4% of contribution. Regarding to geographically places, we find that in the provinces of: Pichincha, Napo, Cotopaxi and a small proportion in Tungurahua concentrates the biggest probabilities of nesting of the species.
      Issue No: Vol. 13, No. 2
       
  • Model of Attitudinal Factors for the elaboration of Technical Project as
           undergraduate work

    • Authors: Joshua Aarón Fiallos Zúñiga, Vanessa Alexandra Jurado Vite, Shirley Guisella Coque Villegas
      Abstract: The degree works are considered as the most difficult step in obtaining a university degree, its development involves a great dedication and effort that determine the success or failure of it. A very frequent problem in its elaboration is the commitment that students have with their degree process, this process contemplates several points of view that affect the progression of the same, this due to the appearance of factors that affect the development of the project. The objective of this study is to develop a reliability analysis model to evaluate the impact incidence in the existing performance between attitudinal factors that influence the elaboration of technical projects for undergraduate work. The methodological approach applied is descriptive with a quantitative research method. A survey was applied as an evaluation instrument to 41 individuals who have been part of a degree process. The results obtained propose a model of global dependency factor, which denotes a contingency plan in case of problems arising during the development of the tutorial process
      Issue No: Vol. 13, No. 2
       
  • e Evaluación del diseño de Comunicaciones Unificadas de VoIP en redes
           CAN: caso de estudio Universidad Técnica de Manabí

    • Authors: Silvia Monserrate Cedeño Delgado
      Abstract: The unified communications VoIP modernize traditional communication by offering a single user interface, allowing technologies such as VoIP telephony, chat, instant messaging, e-mail, videoconferencing and fax to converge. The main objective of this research is to design a VoIP unified communications system for the Universidad Técnica de Manabí network that allows all services to coexist without affecting network performance. The research design is experimental through simulation, the methodology followed four phases. The OPNET simulator was used to establish a comparison between the three designs, considering four audio codecs, jitter and latency metrics, as well as voice quality through the MOS indicator. It is concluded that the audio codecs have a significant influence on the evaluation of the designs, being the three-layer hierarchical design the one that allows a better management of the packets circulating in the network, contributing to speed, reliability and availability.
      Issue No: Vol. 13, No. 2
       
  • Learning based on software development through with Civil Engineering
           students

    • Authors: Yasmany García-Ramírez, Santiago Quiñoñes, Jandry Camacho, Jefferson Montoya, Angie Vicente, Darwin Villamagua
      Abstract: The software is necessary to improve the designs and operation of civil engineering projects. Despite its valuable contribution, during the Civil Engineer's training, it is more important to know the physical and mathematical elements behind each model. A combination of both, as software development, could enhance their learning. Therefore, this study aims to propose a learning methodology based on software development for Civil Engineering students. This methodology consisted of 6 phases: 1) choosing the model, 2) searching for developed software, 3) understanding the model, 4) choosing and training in the programming language, developing the software, and 5) validation. The methodology was applied to the iRAP model to evaluate road safety. The proposed methodology, based on several active learning techniques, favors the development of skills that Civil engineers will need in their professional practice. This procedure can be applied to other fields where the programming in the curricular plan is not deepened.
      Issue No: Vol. 13, No. 2
       
  • Honey authenticity in Ecuador

    • Authors: Patricia Vit
      Abstract: Honey bees and stingless honey bees are valued pollinators. Honey is a medicinal food. Ecuador has an apifauna biodiversity of some 200 species of stingless bees (Hymeoptera: Apidae: Meliponini) producers of honey in cerumen pots. Ecuadorian comercial bee keeping with Apis mellifera neglects the cultural legacy of meliponiculture, to such extent that the norm for pot-honey made by consensus along the technical revision of the honey norm NTE INEN 1572, ages in the Ecuadorian Agency of Norms INEN in Quito. Classic and metabolomic data from my Prometeo Project at Universidad Técnica de Machala was provided to INEN to differenciate the entomological origin of Ecuadorian honeys and to detect fake honeys. A fast demonstration was done to uncover fake honey during a meeting of the Technical Committee of Norms: Food Products: Honey, in the year 2015. It is hard to understand how a country with the great biodiversity and ancestral knowledge is not taking action to empower the bee industry with botanical origin, entomological origin and protected geographical indication (PGI). The presence of fake honey is an indicator of bee development in a country. The authenticity analysis of Ecuadorian honey was carried out with the interfacial emulsion test, by quantitative sensory analysis and observation of the honey sediment. The main motivation for this work was to show alternative techniques to nuclear magnetic resonance (NMR) and classical hydroxymethylfurfural (HMF) analysis to detect false honeys.
      Issue No: Vol. 13, No. 2
       
  • INFLUENCE OF THE DRIVING CYCLE, TYPE OF VEHICLE AND TRAVEL CONDITIONS IN
           THE CINEMATIC VARIABLES OF THE ROUTES IN URBAN BUSES. CASE STUDY IBARRA -
           ECUADOR

    • Authors: Rommel Imbaquingo, Ramiro Rosero Añazco, Fredy Rosero, Zamir Mera, Fausto Tapia, Jordan Ramirez
      Abstract: Latin American cities have pollution and traffic problems due to the lack of research and planning in the transport sector. In Ecuador, the characteristics of the transport fleets and their kinematics in the city have not been determined. This study analyzes in detail the kinematic characteristics of each public transport route in the city of Ibarra-Ecuador using GPS georeferencing equipment for each second of travel. 22 urban bus routes were monitored evaluating 186 buses in 832 trips, where it was determined that the average speed, acceleration and deceleration depend mainly on three factors: route, city sector and vehicle model. Other factors such as operator, age of driver, travel times and time slot did not show greater significance in influencing the kinematic variables under study, so it is not considered within the research study.
      Issue No: Vol. 13, No. 2
       
  • INFLUENCE OF THE DRIVING CYCLE, TYPE OF VEHICLE AND TRAVEL CONDITIONS IN
           THE CINEMATIC VARIABLES OF THE ROUTES IN URBAN BUSES. CASE STUDY IBARRA -
           ECUADOR

    • Authors: Rommel Imbaquingo
      Abstract: Latin American cities have pollution and traffic problems due to the lack of research and planning in the transport sector. In Ecuador, the characteristics of the transport fleets and their kinematics in the city have not been determined. This study analyzes in detail the kinematic characteristics of each public transport route in the city of Ibarra-Ecuador using GPS georeferencing equipment for each second of travel. 22 urban bus routes were monitored evaluating 186 buses in 832 trips, where it was determined that the average speed, acceleration and deceleration depend mainly on three factors: route, city sector and vehicle model. Other factors such as operator, age of driver, travel times and time slot did not show greater significance in influencing the kinematic variables under study, so it is not considered within the research study.
      Issue No: Vol. 13, No. 2
       
  • Formulación de la mezcla de harinas de cebada (Hordeum vulgare) y lenteja
           (Lens culinaris) (cereal y leguminosa) para su aplicación en una bebida
           proteica.

    • Authors: MARIA ISABEL MANTUANO CUSME, MARIANA AVELLAN CHANCAY , kevin Avila Franco
      Abstract: The research consisted in obtaining a flour with a high protein content based on lentil flour and barley flour to be applied in a beverage. The parameters studied were: protein content, functional properties and sensory evaluation. Whose treatment (T2: 70%L-30%C) with the highest percentage of lentil presented the highest average protein value of 21.34%. Regarding the functional properties studied as the water absorption index (IAA), water solubility index (ISA) and swelling power (PH), the treatments did not show significant differences. Determining that for all treatments the swelling temperature was 90 ° C, this being an indicator in the preparation of the laundry. Regarding the sensory evaluation, the treatment (T3: 30%L-70%C) with the highest barley content was the one with the highest acceptability by the panelists with 68% in taste and 76% smell respectively.
      Issue No: Vol. 13, No. 2
       
  • the redes mpls

    • Authors: WILLIAM DANTY RAMOS PAUCAR
      Abstract: El presente trabajo de investigación consistió en realizar la evaluación de los parámetros de calidad de servicio en la red WAN de la Universidad Nacional de Huancavelica, antes y después de la implementación de la tecnología MPLS, teniendo como objetivo: Determinar la influencia del modelo de red con tecnología MPLS en la mejora de la calidad de servicio en la red WAN. Se realizó un estudio experimental de Pretest y Postest, de tipo explicativo llevado a cabo en un laboratorio de simulación mediante el software GNS3 y D-ITG. La población y la muestra está constituida por las diez redes WAN y el muestreo fue de manera no probabilística, en cada red se realizaron las pruebas de calidad de servicio, con los tres tipos de tráfico: datos, VoIP y Streaming, siendo los indicadores delay, jitter y perdida de paquetes para cada tipo de servicio. Los resultados obtenidos son óptimos en cada uno de los indicadores que son menores a los resultados obtenidos antes de la implantación de MPLS, por lo tanto, se concluye tanto estadísticamente que la tecnología MPLS influye significativamente en la mejora de la calidad de servicio en comparación con la tecnología IP, porque el valor de P es mayor a 0.05 del nivel significancia.   Palabras Clave: QoS, redes MPLS/VPN, VRF, BGP, OSPF, WAN.
      Issue No: Vol. 13, No. 2
       
  • Evaluation of the Aerodynamic Drag in fuel consumption in commercial
           vehicles in Ecuador

    • Authors: Edwin Grijalva, Jorge Javier Acosta Manosalvas, Edison Marcelo Mancheno Padilla
      Abstract: Energy efficiency on small type vehicles is an important factor that has to be considered, as for the automotive industry, as well for the end consumer. The different motor companies only calculate the fuel consumption by using standard values without considering other external factors, hence car manufacturers just provide a rough calculation of it.  The objective of this article is to analyze the influence of the air density over the aerodynamic resistance through a “Model in the Loop” (MIL); allowing it to evaluate the powertrain system and to calculate the fuel consumption for small type vehicles currently on use in Ecuador.In this context, this paper considers external factors found in different geographical locations in Ecuador.  The results allowed to determine fuel consumption of 6,79 liters per 100 km for the Sierra region and 7,21 liters per 100 km for the Coast region, which represents an increase of around 6% for the latest due to the influence of the aerodynamic resistance between the two regions. The adaptation of the mathematical model allows a better and near accurate estimation of fuel consumption for small type vehicles currently on use in Ecuador.
      Issue No: Vol. 13, No. 2
       
  • The Growth of Anisotremus scapularis (tschudi, 1846) under supply of
           living diets

    • Authors: Luis Antonio Espinoza Ramos
      Abstract: The purpose of this work was to evaluate the growth of Anisotremus scapularis larvae under live diet supply. 50,000 larvae were planted in a 900 L tank where the temperature was controlled daily. Sequentially, three diets were supplied: 1st) Brachionus plicatilis and 2nd) B. plicatilis + Artemia sp. and 3rd Artemia sp. Biometric controls were recorded (cm): initial length, 3.0 ± 0.1 mm; diet with rotifer: 5.03 ± 0.15 mm and diet with Artemia sp. 6.43 ± 0.21 mm. It was concluded that, A. scapularis larvae showed growth under the semicontrolated conditions culture.
      Issue No: Vol. 13, No. 2
       
  • Process improvement through integration of Hazard Analysis and Critical
           Control Point methodology and Knowledge Management

    • Authors: Yadrián Arnaldo García Pulido
      Abstract: Multiple tools have been developed for process improvement; however, the integration of techniques from other areas of knowledge is scarce. Knowledge management is a solid base that promotes continuous improvement and the Hazard Analysis and Critical Control Point methodology allows achieving this objective. The research proposed to glimpse a way to improve processes from the integration of elements of knowledge management and safety management. The proposal starts from the information of critical activities and the search and control of corrective measures that generate new information and stimulate continuous improvement. In this way, increasingly efficient and effective processes are achieved according to market and commercial characteristics, contributing to business success.
      Issue No: Vol. 13, No. 2
       
  • PAINT BOOTH TEMPERED WITH HEAT EXCHANGER OF CASE AND TUBES FOR VEHICLES

    • Authors: Jefferson Javier Sumba Ordoñez
      Abstract: During the drying process in the open air, different circumstances arise that influence the final finish of the painting, generally caused by impurities or insects. In addition, this process takes hours to handle the vehicle. For this, the design of a tempered paint booth will be developed, capable of storing the Ford vehicle model F450 Super Duty, considered the longest existing vehicle in 2021, the vehicle will be able to remain with the doors open inside the cabin without complicating the mobility of the operator, this system will allow to control variables such as the air entering the cabin and the interior temperature. The forced ventilation system will evacuate the internal air in the cabin at the time of painting, during the drying phase, air recirculation will be used to generate energy savings and achieve a temperature of 60C. 100 renewals / hours were considered to guarantee a clean air flow, the heat exchanger must provide 42.15 kW to reach the desired temperature, the filters are capable of providing an ideal air speed of 0.25 m / s, in addition to having a capacity retention of 5500gr / m2 for particles that are generated by paint spraying. Finally, by controlling these variables, air circulation free of contaminants and drying time reduction.
      Issue No: Vol. 13, No. 2
       
  • Firewall, Tráfico de datos, Segu Implementación de políticas de
           tráfico en una arquitectura de red para garantizar la seguridad de acceso
           y servicios en la PUCESE.

    • Authors: Wiston Cevallos, Wilson Gustavo Chango Sailema
      Abstract: Nowadays, every company or institution must have a network architecture that allows to improve its security. It is for this reason that the main objective of this research is to design a prototype network architecture to ensure the security of access and services of the Pontificia Universidad Católica del Ecuador Sede Esmeraldas (PUCESE). For the collection of information and development of this research, qualitative research was used, in which an interview was conducted with the network administrator using dichotomous questions; to demonstrate the results of the virtual practice according to the proposed network prototype, the Pfsense firewall was used for its high degree of security, user-friendly interface and for being open source. The result of this research showed that the current network architecture of the institution does not have an additional Internet service provider in case there is any failure in the service of the main provider, nor does it have another firewall that allows having high availability redundancy in its services. Finally, this research allows concluding that the proposed redundant network architecture prototype allows improving the security of the network architecture that the institution currently has, by having an additional Internet service provider, a load balancer with fault tolerance can be implemented, ensuring that the network service continues to operate in case there is any failure in the main WAN interface or it is disconnected; also if the main firewall is breached, the second firewall would replace it so that the network continues to be protected.
      Issue No: Vol. 13, No. 2
       
  • Design and construction of a low-density plastic crushing and granulating
           machine as a recycling tool

    • Authors: Oscar Gonzales
      Abstract: The objective of this titling work is the design and construction of a low density PET plastic recycling and granulating machine, which will be used for shearing PET plastics, in order to provide a good quality tool by means of the implementation of different elements that will constitute this prototype such as transmission shafts, bearing selection, gears, shear blades, reduction motor selection, support structure, the selection of electrical and electronic elements can also be found for the automation of the processes, checking that all these parameters meet the objectives of this work. You can find the drawings of each designed element, the electrical drawings with the programmable logic controller (PLC) and the plastic crusher assembly.
      Issue No: Vol. 13, No. 2
       
  • DISEÑO, EVALUACIÓN Y VALIDACIÓN DE UN PROCESO ESTANDARIZADO DE TEÑIDO
           EN DEGRADÉ PARA PIEZAS DE FIBRA DE ALPACA: CASO ANDES YARN S.A.C.

    • Authors: SAMANTA LARCO, ANA LUCIA PAZ PAZ
      Abstract: In this project, a standardized and semi-automated line was implementated to dye degraded alpaca fiber parts at Andes Yarn S.A.C which allows to increase the productivity of the degraded dyeing line and improve the quality of the service offered. This improvement proposal consists of a mechanical-robotic system with a PLC control system. The process in which it was implemented has three units, the first preparation of the textile part in which the piece enters with the customer's requirement, is marked and moisturized so that it can be dyed, the second degraded dyeing unit in which the dyeing of the piece is performed as such according to the tone requested by the customer and the third textile finishing unit, in which the piece is rinsed, centrifuged and dried to go through quality control. This standardized process ranges from preparing the part to be dyed until it is stored after it has dried after dyeing and is designed to obtain uniformly dyed parts, without defects in degraded and standardizing the finish between the parts of the same order batch so the components were sized and equipment selected for a compact, semi-automatic, modular and easy-to-operate system. This proposal provides a solution for textile dyeing companies that maintain a limited production process manual and artisanal with high possibility of reprocesses, obtaining a standardized process by controlling the parameters of temperature, time and volume of water as well as the execution of parameterized upstream and downstream movements in the immersion of the part standardizing the dyeing technique allowing to obtain more homogeneous results in a greater number of pieces instead of dyeing. The preliminary results indicate that a degraded dyeing process can be obtained with greater productive capacity that guarantees the quality of the finish of the part, establishing that it allows to stop relying on the expertise and experience of the operator in performing a manual/artisanal dyeing process, increasing variety, replicability and productivity.
      Issue No: Vol. 13, No. 2
       
  • Artificial intelligence in banana value chain: a bibliometric analysis

    • Authors: Estefani Almeyda
      Abstract: This paper presents a systematic review and bibliometric analysis of research works worldwide regarding predictive models using Artificial Intelligence (AI) technology in Banana Value Chain (BVC). The methodology of this systematic review used 7 databases, and exclusion criteria were applied. 52 journal or conference articles were selected, which have been published in the last 5 years (2015 to 2020). Then, a bibliometric analysis was developed using bibliometric indicators to measure scientific productivity such as the number of publications by year, total cites by publication, total citations per paper, H-index of the journal, h-index of the author, etc. As a result, there is accelerated growth in the number of publications. Furthermore, the research team present: the most cited publication; the journal, institutions, and country most productive; and the 11 research areas which have been developed by the scientific community around the world. Finally, this review work concludes the top banana exporting country in the world does not belong to the top 4 most productive countries that publish related to AI in BVC in the last 5 years.
      Issue No: Vol. 13, No. 2
       
  • Solution based on free software tools for the implementation of online
           teleworking in Cuban companies

    • Authors: Rudibel Perdigón Llanes
      Abstract: Nowadays the adoption of teleworking is a topic of interest for companies and businesses, however, its use in developing countries such as Cuba is incipient mainly due to economic and technological restrictions that hinder its implementation. The objective of this research is to develop a solution to implement online teleworking in Cuban companies through the use of free software tools. The scientific methods used were the synthetic analytical, the historical logical, the theoretical triangulation and the experimental method. Performance and security tests were realized to validate the proposed solution in the real environment of a medium-sized Cuban agribusiness company using the tools Wireshark, nmap, hping3, hydra, iPerf3 and the PING command. The results obtained showed that the solution guarantees the remote access of teleworkers to the company's digital applications in a secure way and with acceptable performance indexes in correspondence with the limited technological resources of the organization.
      Issue No: Vol. 13, No. 2
       
  • Methodology for the application of a business intelligence framework in
           the management of electricity supply in Peruvian companies

    • Authors: Redy Risco Ramos, Daniel Pérez Aguilar, Luis Casaverde Pacherrez, Edilberto Vásquez Díaz
      Abstract: This work shows a method based on Business Intelligence for solving questions and problems of companies in the electricity sector. For this, methodologies used by specialists were investigated, three methods were chosen and evaluated and of them, the CRISP-DM (Cross-Industry Standard Process for Data Mining) methodology was used as a reference. Making unconventional use of a commercial BI platform, the methodology was applied to a real case study: an agro-industrial company. After the application of the methodology and the descriptive, diagnostic, and prescriptive analyzes, information and knowledge were found that allowed to propose the deployment of corrective measures that will improve the management of the company's electricity supply, showing that these tools not only have application in commercial matters but also in the management of electricity supply.
      Issue No: Vol. 13, No. 2
       
  • Análisis y detección de objetos en un partido de fútbol

    • Authors: Jaime Veintimilla-Reyes
      Abstract: This application is developed using OpenCV on Python for the analysis of objects within a video of a football match. The process consisted of working with several elements such as the players, the ball and the field lines to achieve a joint detection of all these elements. The work presents the development of this application with a step-by-step explanation of the processes carried out, and the results that have been obtained when applying techniques for contour and color, morphological operations and together with it the use of Artificial Intelligence models. The tools that were used are YOLO, OpenCV and Tensorflow. Finally, the application was run with a video of a FA CUP 2020 of England match where Manchester United and Brighton teams played.
      Issue No: Vol. 13, No. 2
       
  • The CONSTRUCTION OF THE BODYWORK OF THE COMPETITION VEHICLE FORMULA
           STUDENTS FROM NATURAL FIBER COMPOSITE MATERIALS

    • Authors: Cristian Paredes, Christian Bautista, Patricio Mena
      Abstract: The present work describes the development of a body for the Student formula vehicle, using animal fiber (horsemane) and vegetable fiber (cabuya) as reinforcements adhered to a polyester resin matrix. Prior to the construction of the body, the behavior of the material to be used was analyzed by combining the reinforcements by means of different layers and subsequently subjecting them to tensile test, bending test and free dart drop impact test according to ASTM standards. In the design of the body, CAD software was used that allows it to be evaluated under real aerodynamic conditions and to determine the most suitable geometry. The layers were deposited manually to shape the pieces and a weight was applied to prevent the fibers from separating; once the pieces were cured and extracted from the mold, they were polished, to later deposit a base protection layer and polyurethane paint respectively. Once the bodywork was finished, the results obtained were favorable because the material presented excellent mechanical characteristics to the different efforts, reducing the mass by 41.95%, in relation to the 2012 bodywork that served as a reference, and that was manufactured with fiberglass and polyester resin.
      Issue No: Vol. 13, No. 2
       
  • Architectures of Energy Harvesting Systems

    • Authors: Carlos Gordón, Fabian Salazar, Maritza Núñez, Julio Cuji
      Abstract: This article develops the literary review of the architectures of energy harvesting systems, whose objective is to identify parameters: frequency, type of antenna, architecture (elements), among others. The methodology used has four stages: a) Search for documentation, 10 systems were obtained, which were designated with the letter "S" accompanied by the number of the article found, b) Reading of scientific documents, carried out in two stages; the first with readings between 20 and 30 minutes and the second at intervals of 60 to 150 minutes. c) Extraction of information and architecture of the systems, where the stages of each system are detailed (which vary from 2 to 4), the working frequencies (300 KHz to 3.43 GHz; the 2.45 GHz being the most used in systems for harvesting radio frequency energy). In addition to using multiplier and rectifier circuits in certain systems in different configurations to later be stored in batteries or directly applied in devices. d) Documentation of the information extracted. Finally, after completing the literary review, it was observed that, in most of the articles reviewed, the systems consist of 3 stages: antenna, coupling and rectification with frequency ranges from 1.8 to 2.4 GHz; therefore, it does not require a large number of elements and is simple to implement.
      Issue No: Vol. 13, No. 2
       
  • Applications of materials reinforced with natural fiber in the automotive
           area

    • Authors: ANDRES MORENO CONSTANTE
      Abstract: Concern about the depletion of fossil fuel reserves, increasing global warming has led to increased research on the substitution of synthetic fibers for natural fibers, and, the amount of research on natural fibers have an important role to play towards a sustainable and environmentally friendly future. In addition, products based on natural fibers have increased substantially. This article was applied the PRISMA methodology for the review of the available literature, which allows identifying relevant articles based on natural fibers and their application in the automotive industry, from recognized databases. The approach was provided to identify the elements formed in the automobile as indicators used by the authors for this analysis. Some properties required by simulation have been obtained from the literature, such as the physical and mechanical properties of the shaped materials for this type of automotive applications and multiple solutions. In this document, a review on current applications of natural fiber composites in different uses within the automobile has been presented along with some information on the future scope of research in the industry.
      Issue No: Vol. 13, No. 2
       
  • Inhibition of lipid oxidation in ground meat by an extract of majagua
           flower (Talipariti elatum Sw.)

    • Authors: Dairon Iglesias Guevara, Rocio Cartaya Quintero
      Abstract: Increasing the shelf life of meat products is one of the fundamental objectives of the industry. For these reasons, the objective of the present work was to evaluate the effect of a hydroalcoholic extract of majagua flower in the inhibition of lipid oxidation in ground pork. This was added at concentrations of 0.5; 1.5 and 3% m-v to the meat samples. The inhibition of lipid oxidation was carried out through the thiobarbituric acid reactive substances (TBARS) method after being stored for three days at 10 ° C. All the concentrations evaluated showed an important inhibition of the formation of TBARS, being greater as the concentration of the same increased. The minimum concentration (51 mg AGE / kg of meat) was able to inhibit the formation of TBARS by 61.7%.
      Issue No: Vol. 13, No. 2
       
  • ANÁLISIS DE LA VULNERABILIDAD SOCIAL EN CASO DE UN EVENTO SÍSMICO EN EL
           CENTRO HISTÓRICO DE LA CIUDAD DE QUITO

    • Authors: Steven Marcelo Martínez Unigarro
      Abstract: El análisis de la vulnerabilidad social en caso de un evento sísmico, es un tema que amplía los conocimientos e inquietudes sobre los desastres naturales y en este caso, las consecuencias sociales que trae a la población. Este estudio requiere verificar la vulnerabilidad social en el CHQ, sus consecuencias desde la sociedad y como está debería de actuar frente a la existencia de un acontecimiento sísmico. La investigación se realizará a través de demostraciones gráficas de las propiedades sociales, urbanas y sísmicas del área de análisis. Con base de antecedentes del área de estudio más la actualidad, se recrea una matriz de evaluación de vulnerabilidad social considerando diversas cambiantes de vulnerabilidad como la residencia, turismo, demografía, economía y salud, del mismo modo, se investiga a la sociedad en peligro para conocer su papel en caso de existir un acontecimiento sísmico de enorme intensidad. Identificando los peligros presentes, se implementará tablas de valoración, el cual dejará saber el nivel de peligro de la ciudadanía e inmuebles. Una vez obtenidos los resultados se determinará cuáles podrían ser las reacciones de los habitantes, las consecuencias en la sociedad, con un enfoque en la salud psicológica y su evaluación dentro de la vulnerabilidad social.
      Issue No: Vol. 13, No. 2
       
  • Importance of reference manager in the management of scientific
           information in university theses students

    • Authors: Lloy Pinedo
      Abstract: Managing scientific information in the research process is a great challenge for university thesis students due to the difficulty of systematizing and structuring the excess of information available in different digital or physical sources. The objective of the study was to analyze the importance of reference manager as a technological tool for the management of scientific information in university theses students. We carried out a bibliographic review by searching electronic databases of scientific articles published in journals indexed to Latindex Catalog, Scielo and Scopus between the years 2016 and 2020. The results of the review describe the characteristics, functionalities, aspects and studies main ones on the benefits that reference manager provide to manage scientific information. We conclude that functions such as the organization of information, bibliographic citation and referencing, and collaboration between researchers provided by reference manager, constitute important resources for university thesis students.  
      Issue No: Vol. 13, No. 2
       
  • Concentration and exposure to asbestos fibers in automotive workshops in
           Quito-Ecuador

    • Authors: Tania Crisanto Perrazo, Julio Morales Vela, Margarita Haro-Robayo
      Abstract: In Ecuador, the number of cars grew from 1,690,824 in 2010 to 2,065,975 in 2013. In Quito in 2014 approximately 445,000 cars circulated, all of them subject to maintenance. The objective of this work to determine the initial concentration and the time of exposure to asbestos of the maintenance workers of the brake system in the small-scale workshops of Quito. The study was in two stages: shoe cleaning and packing. The methodology used was quantitative, through the application of a survey to determine the number of automotive services offered, choosing at the end a sample of three workshops. To establish the concentration, the NIOSH 7400 method was applied in counting the number of asbestos fibers that are produced in an eight-hour workday. It was found that in the cleaning process the three workshops comply with the Ecuadorian Technical Regulation RTE INEN 052:2011 Occupational Safety and Hygiene for the use of asbestos in work activities, whose value is 0.1 fiber/cm3, while in the shoe packing process, one of the studied workshops does not comply with the regulations. It was concluded that the study workshops do not take the necessary occupational health and safety measures required by the RTE INEN 052:2011 for the maintenance of the brake system.
      Issue No: Vol. 13, No. 2
       
  • ANALYSIS OF URBAN VULNERABILITY IN THE FACE OF A SEISMIC PHENOMENON IN THE
           HISTORICAL CENTER OF THE CITY OF QUITO

    • Authors: Coralía Michilena
      Abstract: The analysis of social vulnerability in the event of a seismic event is a topic that broadens knowledge and concerns about natural disasters and in this case, the social consequences that it brings to the population. This study requires verifying the social vulnerability in the CHQ, its consequences from society and how it should act in the event of a seismic event. The investigation will be carried out through graphic demonstrations of the social, urban and seismic properties of the area of ​​analysis. Based on the background of the study area plus the present time, a social vulnerability assessment matrix is ​​recreated considering various vulnerability changes such as residence, tourism, demography, economy and health, in the same way, the society in danger is investigated to know their role in the event of a seismic event of enormous intensity. Identifying the dangers present, assessment tables will be implemented, which will let us know the level of danger for citizens and real estate. Once the results are obtained, it will be determined what could be the reactions of the inhabitants, the consequences in society, with a focus on psychological health and its evaluation within social vulnerability.
      Issue No: Vol. 13, No. 2
       
  • Influencia de diferentes progenies de palma aceitera (Elaeis guineensis
           Jacq.) sobre la germinación.

    • Authors: SILVIA MADELEIN ZAMBRANO MARCILLO
      Abstract: El Instituto Nacional de Investigaciones Agropecuarias (INIAP) principal productor y comercializador de palma aceitera ( Elaeis guineensis Jacq) seeds in the Ecuador, has different parents of Deli Dura type and Pisífera type for obtain the hybrid INIAP – Tenera, The present investigation had as objective to evaluate the influence of 20 progenies (Dura x Pisífera) on the germination of the seeds. Resulting for total germination that the female parents D2, D4, D6, D8, D9 y D10 crossed with the pisifera P1 showed significant statistical differences, with respect to the combination of these with the Pisifera P2. In germination with optimal standard were observed statistical differences between the combinations of the progenitors Dura D1, D8 y D9 with the pisiferas P1 y P2, when these female parents were crossed with P1 they achieved a higher percentage of optimal germination than when they were crossed with P2. of the 10 parents Duras studied, seven of them when crossing with P1 obtained average optimal germination higher than 50%; in return only two of the Duras (D3 y D5) evaluated and crossed with P2 achieved optimal germination equal  or higher than 50%. These results show that the percentage of germination of seed Dura x Pisifera has a high relationship with the male parent used.
      Issue No: Vol. 13, No. 2
       
  • Cumplimiento de los principios de la norma ISO 9001:2008 y su
           adaptación a ISO 9001:2015

    • Authors: Lizeth Alfonsina Portilla Villareal, Martha Ramírez-Valdivia, Lorena Alexandra Portilla Villareal
      Abstract: This work evaluates the level of performance of the quality management principles perceived by managers and employees of two coffee-production companies: one certified and one non-certified. Both companies are located in the city of Pasto, Nariño, Colombia. The evaluation was based in the principles defined by the ISO 9001:2008 with an approximation to the ISO 9001:2015. The variation on levels of perception was analyzed; besides, the study evaluated if the changes of the ISO 9001:2015 required major changes in the instrument designed and used. The comparison of the companies results required a quantitative study with a non-experimental design. An exploratory, descriptive, observational, and transversal study was applied for the independent units of observation. This is consistent with a case study, given the selection of the units of analysis. The level of perception was evaluated by means of a questionnaire. The main results show differences among the perception of employees from both companies for the quality management principles: process approach, leadership, engagement of people, and customer focus.
      Issue No: Vol. 13, No. 2
       
  • Cereal bars based on quinoa (Chenopodium quinoa), cañihua (Chenopodium
           pallidicaule), and heminic iron for children

    • Authors: Orestes Daniel Adrianzén Guerrero, Anadela Julca Neira , Lenin Quiñones Huantangari , Jeimis Royler Yalta Meza, Luis Omar Carbajal García
      Abstract: Peru has one of the greatest biodiversities on the planet, which catalogues it as an authentic food pantry. The objective of the research was to develop cereal bars based on quinoa (Chenopodium quinoa), cañihua (C. pallidicaule) and heminic iron for children. An experimental design was used, which was the combination of two cereal flours (quinoa and cañihua) in proportions (25%, 50% and 75%) and supplemented with heminic iron (5%, 10% and 15%). The nine samples were evaluated, for the determination of the nutritional characteristics it was carried out laboratory analyses and the sensorial ones with panelists of the I.E.I N° 1279 and the I.E N° 17678 of the district of Chirinos - San Ignacio, by means of an appropriate instrument. They obtained 68% of carbohydrates, more than 10.84% of proteins and more than 15.48mg of iron, as well as acceptability, according to Friedman's test; the sample that had more acceptability for the initial and primary level is the sample M3 and it was the one that had more quantity of iron, covering 87.2% of the total requirement of iron in children, whose formulation is quinoa 75%, cañihua 25% and heminic iron 15%. It was possible to develop cereal bars with adequate nutritional value and good acceptability for the parameters of color, smell, flavor and appearance; for this reason it is considered a viable alternative to reduce anemia and malnutrition in the Cajamarca region.
      Issue No: Vol. 13, No. 2
       
  • Diseño de un sistema de control de inventarios de una tienda juguetes

    • Authors: Neyfe Sablón Cossío
      Abstract: In the toy store in the city of Puyo, inconsistencies were detected in the control of merchandise, which can undermine the development of the company, consequently the objective of this article was to design an inventory control system for a toy store. Between November 2018 and February 2019, a stage of characterization of the real situation of inventory management in the company was carried out, and another stage of design of the inventory system. For the analysis of inventory management in the toy store, the basic procedures of this theme were combined. It was identified in the company that: the merchandise is not encrypted, there is an absence of a storage system that facilitates the organization of the merchandise, and the available stock could not be identified. In addition, the inventory parameters that were the basis for the design of the automated system were determined. Starting from an adequate inventory management, a timely supply of the products for sale in the company will be guaranteed and in the minimization of the total cost of logistics activities in inventory control, ensuring better profitability and customer service.
      Issue No: Vol. 13, No. 2
       
  • Analysis of criminal behavior and determining factors of crimes of greater
           connotation in the Santo Domingo city.

    • Authors: WALTER MORA MURILLO, MOISES FILIBERTO MORA MURILLO
      Abstract: Crime has always been a latent problem that hinders the tranquility of people within my city and the country, so this work was born with the idea of ​​obtaining a better understanding of crime in the city of Santo Domingo, considering its relationship with Regarding variables that can be qualitative as well as quantitative that would describe their future behavior, then to address this problem, a statistical analysis was carried out through the application of multivariate techniques with the help of criminal records provided by the city police, this information We worked under a descriptive approach, taking advantage of all the information obtained. The development of the work began with a factorial analysis to group the variables according to factors the use of the statistical computer tool through SPSS, then a multiple linear regression analysis was carried out with respect to the variable "number of suspects". a multinomial logistic regression analysis considering the variable "Crimes" and its relationship with demographic, spatial, temporal and crime characterization variables. At the end of the analysis, a classification tree was carried out, in order to obtain a more complete description of the criminal behavior.
      Issue No: Vol. 13, No. 2
       
  • URBAN FORM AND URBAN ECO-EFFICIENCY - AGRICULTURAL AS AN INDICATOR FOR
           SUSTAINABLE URBAN DEVELOPMENT, IN THE PROVINCE OF HUANCAYO – 2020

    • Authors: Miguel Angel Beltrán Palomares
      Abstract: The Urban Form confers a spatial arrangement of cities; Urban-Agricultural Eco-efficiency is to effectively use natural resources and use efficient models of the productive cycle reducing ecological impacts for sustainability and planning, determining and relating these concepts in the province of Huancayo is the objective of the research. Methodology: the model was used NRTEE, (1999) [Eec= value of the product or service/environmental influence] , developed through Data Envelopment Analysis (DEA) for Urban-Agricultural Eco-efficiency. Urban Form: current land use maps were used; and two-tailed r-Pearson and t-Student [26;2.05] statistical tests. Results: Urban Shape: compactness ratio 0.27, shape ratio 0.21, elasticity ratio 5.47, population density 753.09 inhabitants/km2; Input-Urban Indicators: water consumption 5889116.31Mgl/year, energy consumption 2062019.23Mw/year, food consumption 2664.56Ton/year; Output – Urban Indicators: emission of gases 40335.11Ton/year, economic collection 279.35Mll/year, discharge of wastewater 90581.38Mgl/year; Environmental-Agricultural Costs: consumption of water in the agricultural sector 3348.34Mgl/year, consumption of fertilizers 69.14Ton/year, consumption of phytosanitary products 46Ton/year; Economic-Agricultural Outputs: agricultural production of 4779.79kg/year, income from agricultural land 6390.3s./year, gross value of production 4854.35s./year. The Agricultural Eco-efficiency [Eec-Ag] = 0.89 and Urban Eco-efficiency [Eec-Ur] = 0.98, coefficient of relation r = -0.13 and tc = 0.64. Conclusion: the districts of the province of Huancayo present an Eco-efficient Agricultural - Urban surface, and their statistical relationship does not depend directly on both.
      Issue No: Vol. 13, No. 2
       
  • ENVIRONMENTAL ATTITUDE IN THE CONSERVATION OF THE NATURAL RESOURCES OF THE
           ADULT POPULATION OF THE CENTRO POBLADO NIJANDARIS - CHANCHAMAYO – JUNÍN
           

    • Authors: María Julieta De la Vega Fernández
      Abstract: The environmental attitude is a psychological tendency expressed by the evaluative response towards the environment and natural resources are the naturally valuable products for development and continuity towards sustainability; relating both concepts in the Nijandaris town center is the main objective of the research. A probability sampling was carried out at age [30 - 60 years], a questionnaire of 20 questions/cu was applied; validated by the Likert scale [3 level/cu] Pearson ratio coefficient and t-student. Conclusion: the inhabitants of Nijandaris present a good environmental attitude 55.1%, regular 33.2% and poor 11.7%; in the conservation of natural resources, 46.7% always do it, 37.2% sometimes and 16.8% never; the relationship between both is r=0.67 and t-student=6.25 calculated > t-student=1.98. In its dimensions: the association between affective attitude and conserving flora and fauna obtained r=0.38 and t=2.88; in the cognitive attitude and conserve the water and the soil, he obtained r=0.42 and t=3.21, and last, in the conative attitude and conserves the air, he had r=0.62 and t=5.47; Therefore, we affirm that there is environmental attitudinal concern towards the conservation of natural resources in the Nijandaris Town Center.
      Issue No: Vol. 13, No. 2
       
  • SVC Expansion of transmission systems based on the optimal location of SVC

    • Authors: Yhauquiri Israel Chiza Santillan
      Abstract: La presente se basa en un modelo de optimización con el fin de implementar equipos de compensación reactiva SVC a los sistemas eléctricos de potencia mediante una metodología que busca la reducción de los costos asociados a la instalación de estos equipos, tomando en cuenta varios criterios de expansión del sistema de transmisión, para así establecer el resultado de los aspectos técnicos y económicos del sistema eléctrico. Los flujos óptimos de potencia AC (FOP-AC) se ejecutan con la finalidad de mejorar la proyección de la expansión de los sistemas de transmisión, ya que estos son capaces de proporcionar una mayor precisión que los flujos de potencia de red, para lo cual los FOP-AC tienen como función objetivo la reducción de costos y pérdidas de potencia al implementar SVC y nuevas líneas de transmisión al sistema eléctrico, dichas nuevas implementaciones ocasionaran una readecuación de los flujos de potencia en el sistema lo provoca una mejoría de los perfiles de voltaje en los casos de estudio para esta investigación. La metodología del control de voltaje y redistribución de los flujos en las líneas de transmisión tiene como objetivo principal alcanzar una mejora en las variables de calidad y eficiencia de los sistemas eléctricos.
      Issue No: Vol. 13, No. 2
       
 
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