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        1 2     

  Subjects -> WATER RESOURCES (Total: 128 journals)
Acta Limnologica Brasiliensia     Open Access   (2 followers)
Advances in Oceanography and Limnology     Partially Free   (9 followers)
Advances in Water Resource and Protection     Open Access   (1 follower)
Advances in Water Resources     Hybrid Journal   (17 followers)
African Journal of Aquatic Science     Hybrid Journal   (13 followers)
Agricultural Water Management     Hybrid Journal   (13 followers)
American Water Works Association     Full-text available via subscription   (13 followers)
Anales de Hidrología Médica     Open Access  
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation     Open Access   (2 followers)
Annual Review of Marine Science     Full-text available via subscription   (9 followers)
Applied Water Science     Open Access   (5 followers)
Aquacultural Engineering     Hybrid Journal   (7 followers)
Aquaculture     Hybrid Journal   (26 followers)
Aquaculture Research     Hybrid Journal   (21 followers)
Aquatic Conservation Marine and Freshwater Ecosystems     Hybrid Journal   (19 followers)
Aquatic Geochemistry     Hybrid Journal   (1 follower)
Aquatic Living Resources     Hybrid Journal   (11 followers)
Aquatic Procedia     Open Access  
Aquatic Science and Technology     Open Access   (2 followers)
Aquatic Sciences     Hybrid Journal   (10 followers)
Asian Journal of Earth Sciences     Open Access   (16 followers)
Asian Journal of Rural Development     Open Access   (9 followers)
Australian Journal of Water Resources     Full-text available via subscription   (5 followers)
Bubble Science, Engineering & Technology     Hybrid Journal  
Canadian Water Resources Journal     Hybrid Journal   (17 followers)
Civil and Environmental Research     Open Access   (11 followers)
CLEAN - Soil, Air, Water     Hybrid Journal   (14 followers)
Computational Water, Energy, and Environmental Engineering     Open Access   (1 follower)
Continental Journal of Water, Air, and Soil Pollution     Open Access   (6 followers)
Cost Effectiveness and Resource Allocation     Open Access   (3 followers)
Desalination     Hybrid Journal   (9 followers)
Desalination and Water Treatment     Hybrid Journal   (8 followers)
Developments in Water Science     Full-text available via subscription   (6 followers)
Ecological Chemistry and Engineering S     Open Access   (2 followers)
Environmental Toxicology     Hybrid Journal   (8 followers)
EQA - International Journal of Environmental Quality     Open Access   (1 follower)
European journal of water quality - Journal européen d'hydrologie     Full-text available via subscription   (2 followers)
Ground Water Monitoring & Remediation     Hybrid Journal   (8 followers)
Grundwasser     Hybrid Journal  
Human Resources for Health     Open Access   (3 followers)
Hydro Nepal : Journal of Water, Energy and Environment     Open Access   (1 follower)
Hydrology Research     Partially Free   (6 followers)
International Journal of Climatology     Hybrid Journal   (10 followers)
International Journal of Hydrology Science and Technology     Hybrid Journal   (3 followers)
International Journal of Nuclear Desalination     Hybrid Journal   (2 followers)
International Journal of River Basin Management     Hybrid Journal   (1 follower)
International Journal of Salt Lake Research     Hybrid Journal   (2 followers)
International Journal of Waste Resources     Open Access   (3 followers)
International Journal of Water     Hybrid Journal   (10 followers)
International Journal of Water Resources and Environmental Engineering     Open Access  
International Journal of Water Resources Development     Hybrid Journal   (13 followers)
Iranian Journal of Environmental Health Science & Engineering     Open Access   (1 follower)
Irrigation and Drainage     Hybrid Journal   (3 followers)
Irrigation Science     Hybrid Journal   (3 followers)
Journal of Waste Water Treatment & Analysis     Open Access   (10 followers)
Journal of Aquatic Sciences     Full-text available via subscription  
Journal of Contemporary Water Resource & Education     Hybrid Journal   (2 followers)
Journal of Fisheries and Aquatic Science     Open Access   (4 followers)
Journal of Geophysical Research : Oceans     Partially Free   (14 followers)
Journal of Hydro-environment Research     Full-text available via subscription   (6 followers)
Journal of Hydroinformatics     Full-text available via subscription   (1 follower)
Journal of Hydrology (New Zealand)     Full-text available via subscription  
Journal of Hydrology and Hydromechanics     Open Access  
Journal of Hydrometeorology     Full-text available via subscription   (3 followers)
Journal of Limnology     Open Access   (6 followers)
Journal of the American Water Resources Association     Hybrid Journal   (18 followers)
Journal of Water and Climate Change     Partially Free   (22 followers)
Journal of Water and Health     Partially Free   (1 follower)
Journal of Water Chemistry and Technology     Hybrid Journal   (6 followers)
Journal of Water Resource and Hydraulic Engineering     Open Access   (3 followers)
Journal of Water Resource and Protection     Open Access   (5 followers)
Journal of Water Resources Planning and Management     Full-text available via subscription   (22 followers)
Journal of Water Reuse and Desalination     Partially Free   (6 followers)
Journal of Water Supply : Research and Technology - Aqua     Partially Free   (8 followers)
Journal of Water, Sanitation and Hygiene for Development     Open Access   (3 followers)
La Houille Blanche     Full-text available via subscription  
Lake and Reservoir Management     Hybrid Journal   (4 followers)
Lakes & Reservoirs Research & Management     Hybrid Journal   (15 followers)
Large Marine Ecosystems     Full-text available via subscription   (1 follower)
Mangroves and Salt Marshes     Hybrid Journal   (3 followers)
Marine and Freshwater Behaviour and Physiology     Hybrid Journal   (1 follower)
Methods in Oceanography : An International Journal     Hybrid Journal   (1 follower)
New Zealand Journal of Marine and Freshwater Research     Hybrid Journal   (4 followers)
Open Journal of Modern Hydrology     Open Access   (1 follower)
Osterreichische Wasser- und Abfallwirtschaft     Hybrid Journal  
Ozone Science & Engineering     Hybrid Journal   (1 follower)
Paddy and Water Environment     Hybrid Journal   (1 follower)
Research Journal of Environmental Toxicology     Open Access   (2 followers)
Reviews in Aquaculture     Hybrid Journal   (8 followers)
Revue des sciences de l'eau / Journal of Water Science     Full-text available via subscription   (1 follower)
Riparian Ecology and Conservation     Open Access   (3 followers)
River Research and Applications     Hybrid Journal   (5 followers)
River Systems     Full-text available via subscription   (3 followers)
SA Irrigation = SA Besproeiing     Full-text available via subscription  
San Francisco Estuary and Watershed Science     Open Access   (1 follower)
Sciences Eaux & Territoires : la Revue du Cemagref     Open Access   (1 follower)
Scientia Marina     Open Access   (2 followers)
Society & Natural Resources: An International Journal     Hybrid Journal   (9 followers)
Sri Lanka Journal of Aquatic Sciences     Open Access  
Sustainable Technologies, Systems & Policies     Open Access   (8 followers)

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Civil and Environmental Research    [13 followers]  Follow    
  This is an Open Access Journal Open Access journal
     ISSN (Print) 2224-5790 - ISSN (Online) 2225-0514
     Published by International Institute for Science, Technology and Education (IISTE) Homepage  [30 journals]
  • Geoelectric Evaluation of Subsoil for Optimum Cocoa Yield in Parts of Ondo
           State, Southwestern Nigeria
    • Authors: Muraina Z. Mohammed, Isaac R. Ajayi
      Abstract: Geoelectrical resistivity and direct pitting investigations of subsoils from different cocoa plantations across two senatorial districts of Ondo state, Nigeria were conducted with a view to delineating the subsoil units, identifying the nature and composition of the subsoil units and determining the influence of geology, subsoil resistivity and thickness on the growth and yield of cocoa plants. The study involved reconnaissance geological mapping, Schlumberger vertical electrical resistivity sounding and direct pitting techniques. Eight sounding data were collected with ABEM SAS 1000 resistivity meter. The interpretation of the sounding data involved partial curve matching and computer iteration techniques with direct pitting and geological data as control.  Three to four distinct subsurface geoelectric/geologic layers were identified. These included the topsoil; the weathered layer/fractured basement/cretaceous sediment and basement bedrock. The layer resistivity’s range were 126 - 2306; 37 – 1453 and ? ohm-m respectively while the thickness values of the upper two layers were 0.6 – 1.9 m; 1.9 - 25.2 m respectively. The weathered/fractured column and cretaceous sediments constituted the dominant water saturated unit.  Resistivity and thickness thresholds of 37 - 511 ohm-m and 1.9 - 19.8 m are suggestive of a significant proportion of clay and sand in the soil identified with Idanre, Oda-Akure and Ondo farm sites that usually gave optimum yields. However, other farm sites as Arimogija, Ikpemen and Ago Panu in Owo, Ibulesoro-Akure and Ile-Oluji soil profiles graded into more sandy soils with resistivity and thickness/depth thresholds of the topsoil and weathered layers between 126 - 2306 ohm-m and 5.3 – 35.2 m respectively. It was concluded that the relatively thick column of the weatherable products of the gray gneiss/charnockitic rocks as sandy clay/clayey sand of the upper two layers may have remained the most important underlying geologic units for optimal growth of cocoa in the state. Keywords: Schlumberger, Sounding, Resistivity, Thickness, Soil, Weatherable.
      Issue No: Vol. 6
  • Impacts of Water and Sanitation Activities on the Environment in the Upper
           Mara Basin
    • Authors: H. N. Ngugi, P.G. Home, U.N. Mutwiwa
      Abstract: The provision of reliable and safe water supplies is an essential element in improving the quality of life for mankind. However, over time the natural resource base has become severely stressed due to unsustainable use of the resources. This study was undertaken to evaluate the impacts of water, sanitation and hygiene (WASH) activities on the environment in the upper Mara River basin. Sampled water and sanitation projects were identified by observation and Geographic Information System (GIS) was used to map and report on these projects. Impacts of the projects on land and environmental quality were assessed using Land Quality Indicators (LQI); fresh water quality, solid and liquid waste generation and management and soil erosion. Water samples were analyzed for physical, chemical and bacteriological parameters and only 23.4% of sampled water sources were found suitable as domestic water sources. Most open water sources were contaminated with E. Coli caused by open defecation in the basin which on average was 38%. The study showed that, 21.3% of the sampled water supply projects had evidence of soil erosion around them which was mainly caused by livestock overcrowding at water points. Among the wastewater generating and management activities in upper Mara basin, Bomet municipal stabilization pond posed the greatest pollution threat to the environment since it lacked capacity to treat waste water to standards before it overflowed into the environment. This study recommended that WASH project implementers, users and managers should plan for and implement environmentally sustainable projects. In addition, WASH stakeholders in the basin should make comprehensive efforts to provide improved water sources and sanitation to all the residents. Keywords: Water, Sanitation, Environment, Impacts
      Issue No: Vol. 6
  • Geochemical Assessment of The Trace Elements in Selected Bottled Water
           from Baghdad City-Iraq; Environmental Impact Approach
    • Authors: Saad Zeki A.Kader Al-Mashaikie, Ena'am Juma'a Abdullah
      Abstract: Twenty seven samples of drinking bottled water are commercially available in Baghdad Capital City –Iraq, were collected from local markets to investigate the levels of 17 trace elements (As, B, Ba, Cd, Cr, Cu, Co, Fe, Hg, Mn, Mo, Ni, Pb, Se, U, V and Zn)  for the confidence building of the consumers. Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) technique was used for the analysis of trace elements in the bottled water samples. The estimated trace elements are ranked as B> Fe >Ba> As, Se > Zn> Cr> V> Mo> Cu> Ni> Pb> Hg> Mn> Cd, Co> U.  The results of this study were compared for the suitability for human consumption within the acceptable levels of World Health Organization (WHO,2008) and Iraqi Standards (IQS 2009) guidelines for drinking water. The mean concentrations of the trace elements in the tested water samples obtained in this study were fall within the level values in the guidelines/directives of WHO / IQS  indicating the potability of the bottled waters and hence, could be consumed without any possible health problems. Keywords: Geochemical assessment, Bottled water, trace elements, WHO standards, ICP-MS, Water quality
      Issue No: Vol. 6
  • Measurement of Radon Gas Concentration in Soil and Water Samples in
           Salahaddin Governorate-Iraq Using Nuclear Track Detector (CR-39)
    • Authors: Ali Abdulwahab Ridha, Mahmood Salim Karim, Nada Farhan Kadhim
      Abstract: In the present work, we have measured the Radon gas concentration in environmental samples (soil and water) of selected regions in Salahaddin governorates by using alpha-emitters registrations which are emitted form Radon gas in (CR-39) nuclear track detector. The first part is concerned with the determination of Radon gas concentration in soil samples, results of measurements indicate that the highest value of Radon concentration in soil samples was found in (Takreat) region which was (100.75±11.25 Bq/m3), while the lowest of Radon concentration was found in (Al-Faris) region which was (45.25±15.75 Bq/m3) with an average value of (77.07±12.6 Bq/m3), the present results show that the Radon gas concentrations in soil is below the allowed limit from (ICRP) agency which is (200 Bq/m3). The second part is concerned with the determination of Radon gas concentration in water samples which are from stream channel in this areas, the results of measurements indicate that the highest value of Radon concentration in water samples was found in (Takreat) region which was (0.46±0.11 Bq/L), while the lowest one was found in (Al-Alim) region which was (0.24±0.10 Bq/L), with an average value of (0.333±0.5 Bq/L), the present results show that the Radon gas concentrations in water is below the allowed limit from (ICRP) agency which is (0.5994 Bq/L). In addition to the Radon gas concentrations, we have calculated the Radon exhalation rate in soil samples and the annual effective dose in water samples. Keywords:  environment (soil and water), Radon gas, solid state nuclear track detectors (CR-39).
      Issue No: Vol. 6
  • Analysis of Uniformly Loaded Simply Supported Rectangular Plates with
           Lifting Corners Using Strip Moment Ratio (SMR) method.
    • Authors: Ephraim M.E., Orumu S.T.
      Abstract: The application of the SMR to rectangular plates with corners allowed to lift is presented in this paper. The classical plate bi-harmonic equation for rectangular plates was adapted to the problem. It is assumed that the load on the plate is supported by the joint effort of transverse x-x strips and the longitudinal y–y strips only. The effect of the two diagonal x–y strips required for holding down is neglected. The effect of Poisson ratio on the span moments and plate’s deflection is also presented. The indication is that an increase in Poisson ratio brings about an increase in the longer span moments of the plate and has got no significant effect on the shorter span moment and deflection of the plate. The results of practical application show close agreement with the exact classical results. Keywords: Plate, strip moment ratio, SMR, plate deflection and Plate moments, Lifting Corners.
      Issue No: Vol. 6
  • The Effect of Driver Behavior Mistakes on Traffic Safety
    • Authors: Mohammad Abojaradeh, Basim Jrew, Hadeel Al-Ababsah, Ammar Al-Talafeeh
      Abstract: The main objectives of this study are: to identify driving behaviors and mistakes that drivers make; based on a questionnaire, which may cause traffic accidents in Jordan and highlight their effect on traffic safety. Also, to develop traffic accidents regression prediction models. Also, to propose effective countermeasures to reduce the frequency and severity of traffic accidents. The analysis is based on the questionnaire by using SPSS software to predict accident rates and compare the results with the model reports developed in Jordan and Amman area. The data for this study was collected from a survey questionnaire which was distributed to a sample of drivers in Amman Area and in some Jordan Universities.  The data from the survey questionnaire were analyzed and used in forming the regression models. It was found that the drivers' behavior is considered aggressive, according to the first part which represents the participant's opinion weather they listed the behavior as aggressive or not, and the other part which represent weather the participants conducted this behavior or not. Also, there was a strong direct relationship between the driver behaviors and their exposure to accidents. In conclusion, the aggressive behavior increases the chance of exposure to accidents. From this study, it was concluded the main causes of traffic accidents, injuries, and fatalities that are related to driver behavior. Preventive countermeasures were recommended to enhance traffic safety in Jordan. Key Words: Traffic Accidents, Traffic Safety, Driver Behavior, Driver Mistakes, Aggressive driving, Countermeasures, Regression Models.
      Issue No: Vol. 6
  • The Place of Soil Geotechnical Characteristics in Road Failure, a Study of
           the Onitsha-Enugu Expressway, Southeastern Nigeria.
    • Authors: Onuoha; David Chijioke, Onwuka, Shalom Udeagha
      Abstract: This work investigated the place of soil geotechnical characteristics along the road in the road failure. Soil samples from both failed and un-failed sections of the road were analyzed to ascertain their particles size distribution, liquid limit, plastic limit, maximum dry density, optimum moisture content and California bearing ratio. The data so generated from the eight sample stations established across the road were tested using Students T-test. It was found that there is significant difference between the geotechnical characteristics of the soil and the standard for geotechnical characteristics set by the Federal Ministry of Works at the failed sections but there is no significant difference at the un-failed sections. This led to the conclusion that the soil geotechnical characteristics is a causative factor of the road failure. Hence, it was recommended that the geotechnical and geological characteristics of sub-grades and fill materials be taken into consideration during road construction while relevant geologists, meteorologists/climatologists should be enlisted during the pre-construction design and planning of highway pavements. Also recommended are the following: proper compaction during construction, adequate maintenance programme for the road after construction, installation of good drainage channels for flooded sections, axle load control, careful choice of consulting engineers, prosecution of corrupt consulting engineers and ministry officials, prompt payment of contractors by the government and motivational packages for distinguished contractors so as to mitigate the problem of the failure of the road. Keywords: road failure, causes, environmental implications and remedies.
      Issue No: Vol. 6
  • Water Handling And Hygiene Practices On The Transmission Of Diarrhoeal
           Diseases And Soil Transmitted Helminthic Infections In Communities In
           Rural Ghana
    • Authors: Henry Ofosu Addo, Kennedy Kwasi Addo, Langbong Bimi
      Abstract: In Ghana, diarrhoeal diseases have been identified as the second commonest health problem treated in outpatient clinics. In this study, the relevance of water handling and hygienic practices on the transmission of diarrhoeal diseases and soil-transmitted helminthic infections in three communities in Ghana was evaluated. Specifically, the research looked at physico-chemical qualities of household water, the incidence of diarrhoeal diseases and soil-transmitted helminthic infections. Thirty households were selected by the systematic random sampling technique from the three communities namely Mayera, Ashongman village and Tetegu. Within each household, domestic water was collected and transported to the laboratory for physico-chemical testing. Standardized questionnaires were also administered. The questionnaires addressed issues such as water storage, treatment and hygienic practices among households. The incidence of diarrhoeal diseases and soil transmitted helminthic (STH) infections among households were also assessed. The commonest water sources included pipe-borne water, borehole, rainwater and water from rivers. Most households in the three communities did not treat their water before use. The commonest water storage containers included barrels without lids, pots and plastic containers. There was no significant correlation between STH and diarrhoeal diseases at both Mayera and the Ashongman communities (R=0.279, p=0.136 for Mayera; R=0.311, p=0.094 for Ashongman). However, there existed a weak significantly positive correlation between the incidences of diarrhoeal diseases and the incidence of STH at the Tetegu community (R=0.384, p=0.036). Health education in the aspect of proper hand washing with soap under running water should be intensified in the three communities. Keywords: diarrhoeal disease, water handling, hygiene, soil transmitted helminth, water quality
      Issue No: Vol. 6
  • Ranking the Factors that Influence the Construction Project Management
           Success: Malaysian Perspective
    • Authors: Jolowo Micheal, Deepak T.J., Venishri .P, Ir. Siow Yun Tong
      Abstract: There is need for the construction industry in Malaysia in all levels to be aware of project management and to efficiently practice project management principles in the construction industry. This paper seeks to explore the extent of knowledge which the construction companies have on the use of project management principles in the Malaysian construction industry as a whole and rank these project management principles with the aim of finding out the most commonly used in the construction industry. It is also aimed at finding the importance of construction project management and the factors responsible for the success of construction project in general. A total of 55 questionnaires were filled and returned. The targeted groups of respondents were contractors, site engineers, project managers and project site supervisors who have knowledge on construction project management. The data collected were based on the premise of the implementation and the usefulness of project management methods in the various construction companies. The findings from this study revealed that majority of the construction companies in Malaysia have the knowledge of construction project management and its importance in successful project execution. Keywords: Project, Management, Success, Questionnaires, Knowledge, Execution,
      Issue No: Vol. 6
  • Anomalous Seepage Flows and Piping in Oje-Owode earthdam: Granular
           filter-drain media as controlling measure
    • Authors: Oladipupo S. OLADEJO, Josiah ADEYEMO
      Abstract: There was loss of water at Oje-Owode dam embankment through seepage. Evidence of some degrees of fracturing and seepage at the dam toe been reported. Previous results showed that the dam embankment was permeable and anomalous seepage occurred at the toe. This study, therefore attempted the application of locally sourced granular filters, precisely, stone dust from quarry, to model the control of seepage and piping at the toe of the dam embankment. Coarse soil samples were collected from quarry site as selected granular filters. Granite stones of sizes ½ - ¾ inch were selected as the drain samples. These were subjected to particle size analysis, compaction tests, specific gravity; and constant head permeability test. Numerical analyses were also carried out to generate flow lines, seepage rates and velocity vectors of the dam. The results of the simulated flow net showed a seepage value of 3.8066 x 10-8 m3/s per width, while total seepage at maximum phreatic level and at full length (896m) of dam axis was 3.4107 x 10-5 m3/s. This indicated loss of water from dam toe through seepage. The velocity vector contours showed flow directions and maximum velocity magnitude of 3.6 x 10-8m/s in the direction of decreasing heads. The modelled filter-drain installed at dam toe controlled the anomalous seepage water and prevented piping as though it were a horizontal drain. The flow lines were controlled at coordinate points (36.25m, 0.56m) and remained horizontal through the filter media, until it exited the dam at the toe at coordinate points (41.88m, 0.59m), which is relatively a save point for collection. The modelled filter-drain media installed at dam toe controlled the anomalous seepage water and prevented piping. Keywords: Oje- Owode dam, Piping, Granular Sand filter, Numerical analyses, Seepage  
      Issue No: Vol. 6
  • Towards Urban City with Sustainable Buildings: A Model for Dhaka City,
    • Authors: Khalid Md. Bahauddin, Mohammad Mahbubur Rahman, Fahad Ahmed
      Abstract: Dhaka has experienced high economic growth escorted by rapid urbanization. Physical infrastructures of Dhaka city growing day by day with the swiftness of rapid urbanization. It revealed that most of the physical infrastructures i.e. buildings of Dhaka city did not follow the characteristics of sustainability resulting significant threats to well beings.  In this perspective, ensuring sustainability in building is time worthy issue in Bangladesh. This paper tried to address the issues of sustainable building as well as propose a sustainable and smart design which will swathe criteria of environment, social and economic sustainability for Dhaka city. If the majority of the objects of proposed design are met, the building will be more probable to meet the changing requirements of the settlers, as well as make it a more sustainable, protected, secure, efficient and environmentally friendly place in which to stay. Keywords: Dhaka city, Smart materials, Sustainable design, Sustainable buildings
      Issue No: Vol. 6
  • Environmental Problems of Sachet Water Waste Disposal in Nsukka Urban,
           Enugu State, Nigeria
    • Authors: Nkiru Daisy Ezeokpube, Chinwe Joy Obiora, Philip Ogbonna Phil-Eze
      Abstract: The study examined the environmental problems of sachet water waste disposal in Nsukka urban. Copies of questionnaire were used to collect data from a sample size of 720 respondents. Mean score, Principal Component Analysis (PCA) and One-way Analysis of Variance (ANOVA) was used for data analysis. Results show that the environmental problems of sachet water waste disposal in the study area ranges from blockage of drainage systems (M=4), air pollution (M=2.8), to water pollution (M=3.8) .To avert the environmental threats posed by sachet water waste, the study recommends: 1) Government at the local government level should make adequate provision for waste disposal facilities 2) The government agencies concerned with making policies should introduce a policy that would mandate the makers of sachet water to ‘buy-back pack’ from users. This would serve as incentive to users not to dispose sachet waste indiscriminately rather to see the sachet wastes as valuable material that could be sold to make money 3) Government should also make policies that before any company is allowed to start sachet water production, she would have shown her reusing and recycling machines. The machines would be used to recycle the waste when bought from users. Keywords: Sachet water, waste, environmental, disposal, Nsukka.
      Issue No: Vol. 6
  • Characteristics And Management Of Solid Waste In Ghanaian Markets - A
           Study Of WA Municipality
    • Authors: Patrick Aaniamenga Bowan, Millicent Timol Tierobaar
      Abstract: Waste management occupies a vital place in the economies of both developed and developing countries. Urbanization in Ghana has made the management of solid waste very crucial in the areas of public health and the environment. Poor solid waste management in Ghana can be attributed to the failure of proper waste characterization in Ghana. Thus, the objective of this paper is to determine solid waste composition and bulk density in the Wa market. The study considered waste characterization at the Wa Central Market by determining the percentage by weight of the various solid waste components generated in the market within the months of June to August, 2013. Waste bins were placed at selected locations in the market for waste collection and sorting for the study.  More information can be found in the full paper. 
      Issue No: Vol. 6
  • Reducing the Impact of Uplift Pressures on the Base of a Concrete Dam by
           Configuration of Drainage Holes (Hypothetical Case Study)
    • Authors: Imad H. Obead, Haider M. AL-Baghdadi, Riyadh Hamad
      Abstract: A study of the impact of the uplift pressures upon base of a typical water retaining structure was presented. This work was conducted through numerical analysis by finite element method to evaluate the hydraulic uplift pressure distribution generated by the calculated flow. Also, the effects of position of either single or dual drainage holes on uplift pressures characteristic were included. A hypothetical case was solved for three types of drainage holes, and the reduction of uplift pressures were computed in each case, a comparison was presented and the results showed that it can produce the desired reduction in hydraulic uplift pressures by using two drainage holes at equidistance of 8m from upstream edge of structure floor.
      Issue No: Vol. 6
  • Drivers’ Behavior at Signalized Intersections Operating with
           Flashing Green: Comparative Study
    • Authors: Wael Awad
      Abstract: In Jordan, thirty-four signalized intersections out of 105 within Greater Amman Municipality were tested to operate with the flashing green change interval without prior justification or establishing guidelines for such practice. This research attempts to assess the impact of the used practice on driving behavior conducting a comparative study between two sets of signalized intersections. The first set of signalized intersections operates with flashing green and the second set of signalized intersections operates without flashing green. Results showed that average approach speed of vehicles crossing intersections that operate with flashing green change interval is higher than the average approach speed for vehicles crossing intersections which operate without flashing green. The proportion of vehicles crossing intersections during flashing green change interval is significantly higher than the proportion of vehicles crossing the intersections during change interval at intersections that operate without flashing green. While the proportion of vehicles jumps before green on intersections operating with flashing green light is lower than the proportion of vehicles jumps before green on intersections operating without flashing green. Guidelines should be developed to control such application. Future research will expand the sample size to cover wide spectrum of intersections allover Jordan, and will consider the crash history records at each studied intersection. Keywords: Traffic control; flashing green signals; driving behavior
      Issue No: Vol. 6
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