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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
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Advances in Science and Technology
Number of Followers: 16  
 
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ISSN (Online) 1662-0356
Published by Scientific.Net Homepage  [14 journals]
  • Bamboo Planer Machine Frame Design and Strength Analysis Using Finite
           Element Method

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Bendadi J. Robbani, Inggar Septhia Irawati, Radhian Krisnaputra, Fairuz Ikbar Wikantyo, Setyawan Bekti Wibowo
      One of the laminated bamboo production processes uses a bamboo planer machine. The use of this technology creates great opportunities for improving the quality of the bamboo processing process. Existing equipment still requires improvements to the power transfer mechanism and system, which affects the frame's shape. Therefore it was necessary to design and retest the frame design so that the machine can produce good shavings. The frame design comprises 50 mm × 50 mm × 5 mm angled steel with ASTM A36 material standardization. The testing method was finite element analysis (FEA) using SolidWorks. The frame was tested using static loading simulation to take mass, maximum stress, deflection, and safety factors. From the simulation, the safety factors value was 6,513. It was too high compared with the predetermined criteria, so the thickness of the frame was changed to 4 mm. The optimization increases material efficiency by 18,227% resulting in reduced frame mass to 76,576 kg. The result of the safety factor becomes 5.930. Keywords: FEA; Frame; Bamboo; Optimization; Strength Analysis; Planer Machine


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Effect of Temperature Setting on 3d Printer Machine for Chocolate Printing

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Muhammad Musthofa, Reza Mahardika, Rafiq Aly Nurdin, Soeadgihardo Siswantoro, Setyawan Bekti Wibowo
      The food industry has taken advantage of additive manufacturing technology to create food from complex ingredients customized as needed. Research on 3d printing of food, especially chocolate, has been carried out, but it needs further development related to nutritional ingredients and the accuracy of printing results. This research was conducted to design an extruder nozzle from a 3D printer used to print chocolate. The extruder nozzle was manufactured using a stainless-steel tube with a diameter of 30 mm with a heater on the outside. The heating control method used a digital thermostat STC-1000, which controls the minimum and maximum operating temperature. The digital thermostat is connected to the heater and fan, which work alternately to get a chocolate temperature distribution that matches the printing specifications. The results showed that the control temperature in the extruder was between 32.2-32.3 °C and could produce an average chocolate printing temperature of 33.4 °C. This configuration produces a stable and continuous extrusion of chocolate on the chocolate 3d printer machine.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Prototype Development for Predicting Eccentricity Based on Rotating
           Unbalanced Behavior of Train

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Rokhim Safarudin, Briliant Linggar Mahendra, Irfan Bahiuddin, Agustinus Winarno, Suryo Darmo, Benidiktus Tulung Prayoga
      This paper present a prediction of the centrifugal force caused by the dynamic unbalanced of train wheelset on a developed scale down test bench. The wheelset dynamic unbalanced can be one of reasons for the derailment accidents on trains. Dynamic unbalance represented by the produced centrifugal force can be the main factor causing wear on bearings, noise, vibrations on the train, and the fatal cause of trains accident. The behavior prediction is carried out by applying various eccentricity values by varying the additional weights. The centrifugal force prediction of the developed equipment then compared with the actual size wheelset’s unbalance behavior. The comparison shows a similar pattern between this miniature and the actual size test-bench in terms of the magnitude of the centrifugal force at various eccentricities and rotational speeds. Keywords: train, wheelset, railway, rotating unbalance


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Numerical Simulation Using Slats, Slots, and Flaps in Steady Flight
           Conditions

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Setyo S.P. Hariyadi, Bambang Junipitoyo, Wawan Aries Widodo, Imam Sonhaji, Fungky Dyan Pertiwi
      At this time, it has become commonplace for aircraft to use high lift devices. The high lift devices used include flaps, slats, slots, elevators, ailerons, and others. This study examines the effect of multiple elements on the wing, especially the combination of slat slots and flaps in several configurations.. This research was conducted with numerical simulations on wing airfoil NACA 43018. The observed conditions were rectangular wing (no slats, slots, and flaps) compared to the use of slats, slots, and flaps under steady flight conditions. The angles of attack used are (α) = 0o, 2o, 4o, 6o, 8o, 10o,12o,15o, 16o,17o,19o, and 20o. Numerical simulation using Ansys 19.1 application with turbulent model k-ε realizable. The use of slats, slots, and flaps does not result in a shift in the stall point but tends to increase aerodynamic performance (CL/CD)which is very significant. By paying attention to pressure drag, viscous drag and the resulting induced drag, the use of slats, slots, and flaps reduces a large amount of induced drag so that the lift to drag ratio increases.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Developmental Research for Industrial Image Processing in the Engineering
           Education to Learn SDGs

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Fumitake Kato
      Industrial image processing technology is widely introduced and applied in various fields such as industrial plants, bio-medical industry, agro technology, and also environmental fields. In addition, image acquisition devices are getting more compact and installed onto mobile phones and handy terminals. Which means that we always carry the devices, and can easily take images (still image and moving pictures) of good quality with high resolution, anytime and anywhere. In the research field, 2D code, known as QR code or Data Matrix, has a great potential for industrial applications. As we already know, QR code has been spread and used with various usage likewise ID recognition, URL display on the sticker, and/or the financial transaction's confirmation processing. Not only QR code, but Data Matrix is also frequently used as the printed tag on various material such as metal, wood, or plastic parts. These are used as a product ID or serial number to be recognized by using a mobile terminal. The 2D code technology can be a powerful tool to check and trace the marketing channel of each part of the product. On the other hand, Sustainable Development Goals (SDGs) have been proposed since 2015, researched and introduced to improve our environment and life. This paper describes the proposals of new application technology related to the concept of SDGs. The main contents are based on science and technology, but these have been developed and implemented by the young students of the college. The process and the details are described in the paper.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Evaluation of Urban Drainage System as a Flood Control in Klitren Urban
           Village

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Fadhila Hanayni, Muhammad Sulaiman
      Flooding that often happens during the rainy season in Klitren urban village is caused by reducing open space as water catchment areas [1]. It happens due to several factors, including a large amount of land that has been converted into residential areas and unsustainable existing drainage systems. To evaluate the amount of runoff produced by the area, the writer conducted a simulation using EPA SWMM 5.1 software. The simulation is conducted to compare how much runoff is generated by the area and how much water is collected according to the drainage system's capacity. Modeling alternatives used including the existing condition and other alternatives such as implementing green infrastructure installations. From the results of the analysis conducted in the study location, the runoff decreased from 3,09 m3/s to 2,92 m3/s, and the runoff decreased by 5,5%. Then, it can be used as a reference for implementing green infrastructure in urban areas.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Rock Mass Classifications of Flysch Deposits for Analyses of Tunnel
           Behaviour and Support System-A Case Study of Design Evaluation of Tunnel 6
           of Jakarta-Bandung High-Speed Railway

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Octavika Malda, I Gde Budi Indrawan, Akmaluddin
      Tunnel 6 of the Jakarta-Bandung high-speed railway is the longest mountain tunnel in Indonesia. This study aimed to evaluate the behaviour of rock masses surrounding the tunnel and support system by conducting surface and subsurface engineering geological investigations. The rock masses at the tunnel construction area were classified based on the Rock Quality Designation (RQD), Rock Mass Rating (RMR), Tunnelling Quality Index (Q), and Geological Strength Index (GSI) systems. The surface and subsurface investigation results show that the tunnel construction area consists of Quaternary volcanic rocks overlying Tertiary sedimentary rocks of the Jatiluhur Formation. The sedimentary rocks have characteristics similar to flysch deposits and are classified as poor to good quality rock masses. The regional tectonic setting had likely worsened the rock mass conditions. Down to a 10 m depth, the rock mass quality is controlled by the RQD value, which correlates with the grain size distribution of the rock masses. The rock masses surrounding the tunnel are anticipated to have an anisotropic behaviour and wedge and chimney failure mechanisms. Consequently, a combination of reinforced shotcrete and bolting is recommended for a conservative empirical design of the tunnel support system.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Application of RMR, Q, and Japanese Rock Mass Classification Systems for
           Design of Support Systems of the Narogong Weir Diversion Tunnel, West
           Java, Indonesia

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Laela Fitriyantina, I Gde Budi Indrawan, Doni Prakasa Eka Putra
      This study aimed to propose alternative support systems for a diversion tunnel at the Narogong Weir, West Java, based on the Rock Mass Rating (RMR), Tunnelling Quality Index (Q), and Japanese Rock Mass Classification systems. Surface geological mapping, drill core evaluation, and laboratory testing were conducted to characterize the engineering geological conditions of the tunnel construction site. The results showed that the study area consisted of alternating layers of siltstone and marlstone of the Jatiluhur Formation. Joints and an anticline are the main geological structures observed in the study area. The uniaxial compressive strength (UCS) values of the intact rocks ranged from 4 to 25 MPa. The rock masses were classified into poor to fair classes. The diversion tunnel was divided into two segments of tunnel support systems. Although the support system characteristics are slightly varied, in general, the rock mass classifications recommended rock bolts and shotcrete as the primary tunnel support systems.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Present-Day Surface Deformation along the Opak Fault, Yogyakarta, Observed
           Using Sentinel-1 Interferometric Wide-Swath Data

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Hidayat Panuntun, Anindya Sricandra Prasidya, Gani Mahendra
      The Opak Fault (OF) system is the most widely known active fault system in Yogyakarta, Indonesia. This active fault system became increasingly recognized especially after the 2006 Yogyakarta earthquake. Although the 2006 Yogyakarta earthquake caused a lot of damage and casualties, seismogenic fault responsible for the event is still a matter of debate. GNSS-based observation studies suggested that the 2006 event occurred along the OF. However, seismic-based observation studies showed that this event might occurred several kilometers to the east of the OF. A better understanding of the active seismogenic fault is important to assess geohazards in the region. In this paper, Interferometric Synthetic Aperture Radar (InSAR) data from Sentinel-1 satellite, which has a wavelength of 5.6 cm and operates in Terrain Observation by Progressive Scan (TOPS) mode, was used to image deformation rates of the OF. The result showed that there is a significant surface deformation along the OF. This surface deformation could be driven by postseismic effect following the 2006 Yogyakarta earthquake or the aseismic creep. Displacement discontinuity, which indicates the location of the OF, could be recognized using InSAR technique. These finding confirm the capability of SAR observation in providing high spatial resolution of surface deformation data.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Environmentally Friendly Preparation of Tempeh from Indonesian Soybean
           with Dry Peeling Technique

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Sri Yuliani, Juniawati, Sri Widowati, Sri Usmiati, Esty Suryana
      Soybean for tempeh preparation is generally peeled by wet milling of cooked soybean seeds. This technique is time consuming and requires a lot of water. Instead, peeling can be done by dry milling prior to cooking to save processing time and water usage. This research aims to evaluate the characteristics of tempeh prepared from local Indonesian soybean as influenced by peeling techniques. The characteristics of peeled and unpeeled-soybean were also evaluated. Characterization of tempeh was done on proximate composition, textural properties, color, and organoleptic acceptances. The proximate characteristics of tempeh made from dry-peeled and wet-peeled soybean had no significant differences. Tempeh prepared by dry peeling had a softer texture (1.79 N) than that prepared by wet peeling (2.04 N). The color of tempeh with dry-peeled soybean was lighter than that with wet-peeled soybean, both its outer and inner part. Tempeh prepared by dry peeling had a better sensory acceptance in chewiness (4.3) than that by wet peeling (3.0), and no differences in taste, cohesiveness, aroma, and color. These results provide an alternative of a more environmentally friendly tempeh preparation with a dry peeling technique.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Potential of Karimunjawa Island’s Plants as Antibiotic-Producing
           Endophytic Bacteria Sources

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Yeni Indra Kumalasari, Agung Dian Kharisma, Sri Yuwantiningsih
      Endophytic bacteria have a great potential to be applied as biofertilizers and biopesticides, but their information as a source of antibiotics still needs to be developed and explored. The aim of this study was to investigate the potential sources of antibiotics in endophytic bacteria isolated from the stems of Setigi, Wahong, Bongko, Kalimosodo, Dewandaru, and Legundi plants on Karimunjawa Island. Molecular approaches were performed to isolate, characterize, and identify bacterial endophytes as potential antibiotic sources by plate assay and 16S rRNA gene sequence analysis. Dewandaru isolate was identified as gram-negative bacteria, whereas; gram-positive bacteria were detected in other isolates. Moreover, Setigi and Dewandaru isolates showed the highest level to inhibit the growth of Fusarium sp and displayed 99% similarity with antibiotic-producing bacteria, namely Bacillus pumilus and Bacillus cereus, respectively. These results indicate the possibility of antibiotic activities by Setigi and Dewandaru isolated. Therefore, it is assumed that both Setigi and Dewandaru isolates potentially appeared as new antibiotics sources from local plants. This study provides novel insight into the future production of novel antibiotics derived from plant-associated endophytic bacterial as a strategy for increasing the application of natural compounds to control plant diseases in agriculture.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Synthesis and Characteristics of Zeolite Y (Fajasitea) from Bagasse Ash
           (Saccharum officinarum) Using Hydrothermal Treatment in Pb2 + Metal
           Adsorption

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Nurhikmah, Sri J. Rachmania, Raden Darmawan
      The first stage to prepare bagasse ash to be synthesized. Furthermore, it will be in a furnace at a temperature of 600°C for 4 hours, then analyzed by SEM, BET, EDX, XRF to determine the morphology, surface area, elements and compounds contained in bagasse ash. The second stage is calcined using H2 gas stream, then TGA analysis. The third stage results from calcination, then hydrothermal with the addition of a molar variation of 10Na2O:xAl2O3 15SiO2: 300H2O namely mixing 3.06 grams of Al2O3, 3.168 grams of NaOH, 1.908 grams of silica from bagasse ash and 20.87 grams of H2O (pH=7). Then the sample will be analyzed using XRD and SEM. The next step will be to test zeolite Y which is synthesized into a metal solution medium, namely Pb2+ 25 ppm. The results of the XRF of bagasse ash contained a SiO2 content of 54% which can be used as a synthetic zeolite with a surface area of 291,761 m2/g, after being synthesized, the surface area of ​​zeolite Y is 648,178 m2/g and % adsorption 97.43% for Pb metal. While commercial zeolite has a surface area of ​​133.122 m2/g with adsorption % 98.84%.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • The Efficacy of Several Types of Organic Pesticides against Mortality of
           Armyworm (Spodoptera frugiperda)

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Restu Puji Mumpuni, Akhmad Sholichudin
      Armyworm (Spodoptera frugiperda) is a pest on several food crops including soybeans and corn. Armyworm control still emphasizes the use of resistant varieties and insecticides. Alternative efforts are needed to use more environmentally-friendly control methods, including the use of organic pesticides from biological materials. The control of Spodoptera frugiperda was carried out by testing the application of several types of organic pesticides at the same concentration of 50%. The purpose of this study was to determine the type of pesticide that was most effective in reducing mortality and attack from Spodoptera frugiperda. The study was started by doing mass propagation of S. frugiperda larvae, S. frugiperda larvae investment, and mortality test. The test used the Randomized Block Design (RBD) method using several organic pesticides consisting of five treatments, namely P0 (control), P1 (tobacco), P2 (shallot), P3 (garlic), and P4 (papaya leaves), P5 (blimbing wuluh leaves), P6 (Jatropa curcas fruit), P7 (lemongrass). The results of the application of organic pesticides on the mortality and attack rate of S. frugiperda had a significant effect. Organic pesticides that are most effective in reducing the mortality and attack rates of S. frugiperda are pesticides made from tobacco (Nicotiana tabacum). At a concentration of 50% organic pesticides made from tobacco can reduce the mortality of S. frugiperda up to 100%. Tobacco-based pesticides also received the lowest land attack rate at 46%. Organic pesticides applied to S. frugiperda larvae also affect the growth of S. frugiperda pupae.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Experience of Electronic Medical Records Adoption in Primary Health Care
           in Indonesia

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Dian Budi Santoso, Nuryati, Nur Rokhman
      Along with the development of information technology, health care facilities in Indonesia have begun to adopt the use of electronic medical records (EMR). This adoption process needs to be documented as a best practice model for health care facilities in the transition process from paper-based medical records to electronic ones. This paper discusses specifically the adoption process of EMR in primary health care facilities. Focus group discussion, interviews, and documentation studies were carried out in one community health center and one general practitioner clinic in a Special Region of Yogyakarta, Indonesia, which is in the process of transitioning medical record management from paper-based to electronic-based. The transition process begins with the appointment of a key people leader, socialization related to EMR, comparative studies to other health facilities that have implemented EMR, determining the projected impact of EMR implementation, conducting needs analysis and design, starting the implementation of EMR, and conducting periodic evaluations. The transition process went through well by the two primary health care facilities which were the subjects of this study. There are several obstacles from the human resources and the technical side but they can be overcome in line with periodic evaluation and improvement.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Integration of ICPC in an Electronic Medical Records Prototype for Family
           Physician Clinic

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Nuryati, Dian Budi Santoso, Nur Rokhman
      Recorded morbidity data in primary health care is different from data found in other health services. Therefore, in managing this data, ideally, a specific classification standard for primary health care services should be used, namely the International Classification for Primary Care (ICPC), where so far primary health care services in Indonesia are still using International Statistical Classification of Disease and Related Health Problems Tenth Revision (ICD-10) as a classification standard. This paper aims to integrate ICPC into an electronic medical record prototype in a family physician clinic. Focus group discussions, interviews, documentation studies, and observations were carried out with family physician clinic stakeholders regarding the need for ICPC implementation. The initial stage of implementation was carried out by data mapping between ICD-10 and ICPC. Furthermore, the data is displayed in a web-based electronic medical record where the officer only needs to do a codification with one of the classification standards and it will automatically display both the ICD-10 code and the corresponding ICPC code. Family physician clinic stakeholders welcomed the integration of ICPC in an electronic medical record prototype that made it easier for them to make disease index. Keywords: electronic medical record, ICPC, primary health care


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Utilizing Technology Acceptance Model (TAM) to Evaluate Data Sharing
           Facility of Spatial Data Infrastructures (SDIs) at the Local Government
           Level in Indonesia

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Annisa Farida Hayuningsih, Heri Sutanta
      Indonesia was part of the first Spatial Data Infrastructures (SDIs) adopter since 1993 [8]. The motivation of SDIs development is to connect thematics spatial data among governments agencies in Local and Central Governments. Data sharing able to reduce data redundancy and allows spatial data to be used multiple times for various purposes [21, 12]. Since the issuance of Presidential Regulation No. 27 of 2014 concerning the National Geospatial Information Network, Central and Local Government develop their geoportal or web gis. This research aims to evaluate the web gis or geoportal at local level based on Perceived Ease of Use (PEU), Perceived Usefulness (PU), Attitude Toward Using (ATU), and Actual Usage (AU). The data source of this research is correspondent’s questionnaire answer. The questionnaire filled up by Development Planning Agency at Sub-National Level (Bappeda) in Indonesia. To obtain research results, the step of study is developing questionnaire, sending questionnaire, questionnaire recapitulation, hypothesis formulation, Strucured Equation Model (SEM) modeling, and Technology Acceptance Model (TAM) calculations. the questions in the questionnaire must refer to the four basic SEM models so that there is no blank value in any of the models. The benefits of this research can predict the adoption of SDIs at the local level and evaluate user respond about ease, convenience, and consistency in using geoportals at districts/cities level for sharing data. As a result of this research, TAM can evaluate the acceptance of geoportal at Local Government. In this research, TAM was able to assess the hypotheses used in this study. Among the 5 hypotheses, 3 hypotheses were accepted because they had a t-value greater than 0.05. Based on the hypothesis test results, it can be obtained that local governments can receive the convenience and benefits of geoportals or web GIS as a service for sharing spatial data.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • A Proposed User Interface Design as a Stimulus for Personality Types
           Confirmation

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Ilham Perdana, Paulus Insap Santosa, Noor Akhmad Setiawan, Supra Wimbarti
      Determining the stimulus is the first step in experimental research to classify personality types based on electroencephalography (EEG), which is stimulated by a visual form known as visual evoked potential (VEP). Matching the personality type of workers to work activities is an organizational concern. The organization demands the concentration of workers to achieve work standards. Information system user interface is a visual form commonly seen by individuals working to carry out job descriptions. Interviews and observations were carried out on several workers as participants. The user interface design of the information systems used by them is the focus of this exploration stage. All participants involved are at the operational level. Their work activities are closely related to the processing of corporate data transactions. Activities of viewing, searching, entering, editing, and deleting data are their daily activities. Of these various activities, all agreed that the data entry process was an activity that required the highest concentration because the validity of the data was essential. Several data entry form designs come in a variety of forms. They were observed to see similarities to one another. The proposed stimulus is the general form of the overall observed data entry form design.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Public Policy Perspectives on the Utilization of Nuclear Power Plants in
           Supporting Sustainable Development in Indonesia

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Tri Hastuti, Susilo Widodo, Heddy Krishyana, Falconi Margono, Hafizh Akbar
      Population growth affects the increase in electrical energy demand in Indonesia. The energy is used to fulfill daily and industrial needs for improving welfare and sustainably advance society. Nuclear power plants (NPPs) are technologically advanced, reliable, and environmentally friendly electricity generators that can significantly reduce climate change. Current public policies related to the use of NPPs in Indonesia tend to bring the realization of nuclear power plants closer. This study aims to provide an overview of the development of public policies related to the use of NPPs in Indonesia. This study uses qualitative methods based on analysis of secondary data collected from various sources and literature. Data analysis is done by selecting, organizing, and presenting as a collection of information to be used for drawing conclusions. The results of the study indicate that the public policy perspectives have progressed towards supporting the use of NPP in supporting sustainable development. The increasing knowledge of public policy perspectives on the utilization of NPPs in Indonesia is important for educational and dissemination purposes as part of efforts to strengthen public acceptance.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Big Data Analytics in the Supply Chain in Indonesia

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Budi Harsanto
      In the midst of the information communication technology development as well as massive disruptions such as the Covid-19 pandemic, big data analysis plays an important role in the supply chain. The aim of this study is to look at how big data analytics research and applications have progressed in the supply chain in Indonesia. While most studies typically have focused on the specific application of big data analytics in a specific industry, this paper attempts to conduct a systematic investigation to comprehend the larger picture. The method used is a systematic analysis of the Scopus database using search queries relevant to big data analytics on the supply chain in a specific Indonesian context. According to the study's findings, big data analytics is implemented in many industrial supply chains, including manufacturing, oil and gas, services, and agriculture. This paper contributes to the literature by investigating the use of big data analytics in the supply chain in Indonesia.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Technological and Organizational Innovation in Food and Agricultural
           Firms: Case Studies on MBNQA Recipients

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Budi Harsanto
      The rising demand for food and agricultural products encourages agricultural firms to innovate in both quantity and quality. The specific aim of this study is to investigate the innovation practices in food and agricultural firms. This study takes the case study method by using the cases of the Malcolm Baldrige National Quality Award (MBNQA) recipients engaged in food and agricultural products, namely Cargill Corn Milling (CCM) and Sunny Fresh Foods (SFF). The data is drawn mainly from Baldrige Application Summary, supplemented by other sources such as the company website as a compliment. This study suggests that innovation is strong in these two firms, both technologically and organizationally. It is indicated by the implementation of sophisticated technology such as automation and robotics and the implementation of organizational innovation in the form of i2i (ideas to innovation) R&D expertise in food products. This study offers important lessons learned on innovation for the agricultural firms to meet current demand while also developing the firm's capability to innovate.


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
  • Performance Prediction and Design Selection of Modular Magnetorheological
           Valve Using Meandering Flow Path Structure

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      Abstract: Publication date: 18 April 2022
      Source: Advances in Science and Technology Vol. 112
      Author(s): Metsen M.A. Hakiki, Ahmad Nur Faizin, Irfan Bahiuddin, Nadia Syifa Atikasari, Fitrian Imaduddin, Saiful Amri Mazlan, Andhi Akhmad Ismail, Oo Kyaw Nyein
      This paper presents an investigation of the dimension variations on modular magnetorheological (MR) valve with meandering flow path structure. The size variations including the inner and outer radius of the valve at radial path. The first step is conducting FEMM (Finite Element Method Magnetics) to find out the density of magnetic flux on MR valve. The obtained magnetic field density is applied to steady state models to predict pressure drop. To determine the best configuration, pressure drop and operation range are the objective of the selection process. Based on the results, MR valve with 2.75 mm inner radius radial and 9 mm outer radius radial was chosen as the best MR valve design if compared to the other MR valve designs. The results obtained from the MR valve with 2.75 mm inner radius radial and 9 mm outer radius radial are 1.79 Mpa for the pressure drop and 6.68 for the operational range. Keywords: modular magnetorheological valve, optimization, objective function, smart materials


      PubDate: Mon, 18 Apr 2022 00:00:00 +020
       
 
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