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Otieno</title> <meta name="description" content="Search results for: Fred A. O. Otieno"> <meta name="keywords" content="Fred A. O. Otieno"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="Fred A. 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O. Otieno"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 40</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Fred A. O. Otieno</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">40</span> Assessment of Drainage Water Quality in South Africa: Case Study of Vaal-Harts Irrigation Scheme</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Josiah%20A.%20Adeyemo">Josiah A. Adeyemo</a>, <a href="https://publications.waset.org/abstracts/search?q=Fred%20A.%20O.%20Otieno"> Fred A. O. Otieno</a>, <a href="https://publications.waset.org/abstracts/search?q=Olumuyiwa%20I.%20Ojo"> Olumuyiwa I. Ojo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> South Africa is water-stressed being a semi-arid country with limited annual rainfall supply and a lack of perennial streams. The future implications of population growth combined with the uncertainty of climate change are likely to have significant financial, human and ecological impacts on already scarce water resources. The waste water from the drainage canals of the Vaal-Harts irrigation scheme (VHS) located in Jan Kempdorp, a farming community in South Africa, were investigated for possible irrigation re-use and their effects on the immediate environment. Three major drains within the scheme were identified and sampled. Drainage water samples were analysed to determine its characteristics. The water samples analyzed had pH values in the range of 5.5 and 6.4 which is below the normal range for irrigation water and very low to moderate salinity (electrical conductivity 0.09-0.82 dS/m). The adjusted sodium adsorption ratio values in all the samples were also very low (<0.2), indicating very low sodicity hazards. The nitrate concentration in most of the samples was high, ranging from 4.8 to 53 mg/l. The reuse of the drainage water for irrigation is possible, but with further treatment. Some suggestions were offered in the safe management of drainage water in VHS. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=drainage%20canal" title="drainage canal">drainage canal</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20quality" title=" water quality"> water quality</a>, <a href="https://publications.waset.org/abstracts/search?q=irrigation" title=" irrigation"> irrigation</a>, <a href="https://publications.waset.org/abstracts/search?q=pollutants" title=" pollutants"> pollutants</a>, <a href="https://publications.waset.org/abstracts/search?q=environment" title=" environment"> environment</a> </p> <a href="https://publications.waset.org/abstracts/8288/assessment-of-drainage-water-quality-in-south-africa-case-study-of-vaal-harts-irrigation-scheme" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8288.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">335</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">39</span> Impact of HIV/AIDS on Food Security in Pala Sub-Location, Bondo District, Kenya</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20B.%20Otieno">S. B. Otieno</a>, <a href="https://publications.waset.org/abstracts/search?q=Were%20Fred"> Were Fred</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20W.%20Kabiru"> E. W. Kabiru</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Waza"> K. Waza </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: HIV/AIDS is leading to the loss of labor through sickness and subsequent death, this is leading to the neglect of farm and off-farm activities, with the subsequent loss of potential income and food security. The situation is sensitive to seasonal labour peaks in agriculture. This study was done to determine the impact of high HIV prevalence in farming systems and food security in Pala Bondo District, Kenya. Methods: In this study, 386 respondents were randomly chosen in Pala Sub-Location. The respondents and key informants were interviewed using structured questionnaire. The data were entered and analyzed using SPSS version 16. Results: It was established that majority of respondents (67%) were between 18 and 35 years {χ<sup>2</sup> = (1, N = 386) = 13.430, p = 0.000} (chimney effect). The study also established that 83.5% of respondents were married {χ<sup>2</sup> = (1, N= 370) = 166.277 p = 0.000} and predominant occupation being farming and fishing (61%), while 52.8% of farm labour was by hand, 26% by oxen, and 4.9% mechanized. 73.2% of respondents only farm 0.25 to 2 acres, 48% mentioned lack of labour in land preparation {χ<sup>2</sup> ((1,N = 321) = 113.146, p = 0.000), in planting {χ<sup>2</sup> (1, N = 321) = 29.28, p = 0.000}. Majority of respondents lack food from January to June, during which 93% buy food. Conclusion: The high HIV prevalence in Pala has affected the farm labour leading to food insecurity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=food%20security" title="food security">food security</a>, <a href="https://publications.waset.org/abstracts/search?q=HIV" title=" HIV"> HIV</a>, <a href="https://publications.waset.org/abstracts/search?q=AIDS" title=" AIDS"> AIDS</a>, <a href="https://publications.waset.org/abstracts/search?q=labour" title=" labour"> labour</a> </p> <a href="https://publications.waset.org/abstracts/64937/impact-of-hivaids-on-food-security-in-pala-sub-location-bondo-district-kenya" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/64937.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">269</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">38</span> Nutrients Removal from Industrial Wastewater Using Constructed Wetland System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christine%20Odinga">Christine Odinga</a>, <a href="https://publications.waset.org/abstracts/search?q=Fred%20Otieno"> Fred Otieno</a>, <a href="https://publications.waset.org/abstracts/search?q=Josiah%20Adeyemo"> Josiah Adeyemo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A study was done to establish the effectiveness of wetland plants: Echinocloa pyramidalis (L) and Cyperus papyrus (L) in purifying wastewater from sugar factory stabilization pond effluent. A pilot-scale Free Water Surface Wetland (FWSCW) system was constructed in Chemelil sugar factory, Kenya for the study. The wetland was divided into 8 sections (cells) and planted with C. papyrus and E. pyramidalis in alternating sequence. Water samples and plant specimen were taken fortnightly at inlets and outlets of the cells and analysed for total phosphates and total nitrates. The data was analysed by use of Microsoft excel and SPSS computer packages. Water analysis recorded a reduction in the nutrient levels between the inlet pond nine and the final outlet channel to River Nyando. The plants grown in the wetland experienced varied increases and reductions in the level of total foliar nitrogen and phosphorous, indicating that though the nutrients were being removed from the wetland, the same were not those assimilated by the plants either. The control plants had higher folia phosphorous and nitrogen, an indication that the system of the constructed wetland was able to eliminate the nutrients effectively from the plants. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wetlands" title="wetlands">wetlands</a>, <a href="https://publications.waset.org/abstracts/search?q=constructed" title=" constructed"> constructed</a>, <a href="https://publications.waset.org/abstracts/search?q=plants" title=" plants"> plants</a>, <a href="https://publications.waset.org/abstracts/search?q=nutrients" title=" nutrients"> nutrients</a>, <a href="https://publications.waset.org/abstracts/search?q=wastewater" title=" wastewater"> wastewater</a>, <a href="https://publications.waset.org/abstracts/search?q=industrial" title=" industrial"> industrial</a> </p> <a href="https://publications.waset.org/abstracts/46894/nutrients-removal-from-industrial-wastewater-using-constructed-wetland-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46894.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">301</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">37</span> Environmental Impact Assessment of OMI Irrigation Scheme, Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Olumuyiwa%20I.%20Ojo">Olumuyiwa I. Ojo</a>, <a href="https://publications.waset.org/abstracts/search?q=Kola%20Amao"> Kola Amao</a>, <a href="https://publications.waset.org/abstracts/search?q=Josiah%20A.%20Adeyemo"> Josiah A. Adeyemo</a>, <a href="https://publications.waset.org/abstracts/search?q=Fred%20A.%20O.%20Otieno"> Fred A. O. Otieno</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A study was carried out to assess the environmental impact of Kampe (Omi) irrigation scheme with respect to public health hazards, the rising water table, salinity and alkalinity problems on the project site. A structured questionnaire was used as the main tool to gather information on the effect of the irrigation project on the various communities around the project site. The different sections of the questionnaire enabled the gathering of information ranging from general to more specific information. The results obtained from the study showed that the two effects are obvious: the 'positive effects' which include increasing the socioeconomic development of the entire communities, resulting in an increase in employment opportunities and better lifestyle and the 'negative effects' in which malaria (100% occurrence) and schistosomiasis (66.7%) were found to be active diseases caused by irrigation activities. Increase in height of water table and salinity is eminent in the irrigation site unless adequate drainage is provided. The collection and experimental analyses of representation soil and water samples from each scheme were used to assess the current status of each receptor. Results obtained indicate the absence of soil with sodium adsorption ration (SAR) values ranging from 3.0 to 3.89, exchangeable sodium percentage (ESP) ranged from 3.8% to 5.5% while pH values ranged from 6.60 to 7.00. Drainage facilities of the project site are inadequate, therefore making it difficult to leach the soil and flood history is occasional. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=irrigation" title="irrigation">irrigation</a>, <a href="https://publications.waset.org/abstracts/search?q=impact" title=" impact"> impact</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20analysis" title=" soil analysis"> soil analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=Nigeria" title=" Nigeria"> Nigeria</a> </p> <a href="https://publications.waset.org/abstracts/8287/environmental-impact-assessment-of-omi-irrigation-scheme-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8287.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">294</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">36</span> Determinants of Selenium Intake in a High HIV Prevalence Fishing Community in Bondo District, Kenya</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samwel%20Boaz%20Otieno">Samwel Boaz Otieno</a>, <a href="https://publications.waset.org/abstracts/search?q=Fred%20Were"> Fred Were</a>, <a href="https://publications.waset.org/abstracts/search?q=Ephantus%20Kabiru"> Ephantus Kabiru</a>, <a href="https://publications.waset.org/abstracts/search?q=Kaunda%20Waza"> Kaunda Waza</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A study was done to establish determinants of selenium intake in a high HIV prevalence fishing community in the Pala Bondo district, Kenya. It was established that most of the respondents (61%) were small holder Farmers and Fishermen {χ<sup>2</sup> (1, N=386) p<0.000}, and that most of them (91.2%) had up to college level education {χ<sup>2</sup>.(1, N=386) p<0.000}, while the number of males and females were not significantly different {χ (1, N=386) p=0.263} and 83.5% of respondents were married {χ<sup>2 </sup>(1, N=386) p=0.000}. The study showed that adults take on average 2.68 meals a day (N=382, SD=0.603), while children take 3.02 meals (N=386, SD=1.031) a day, and that in most households (82.6%) food is prepared by the women {χ<sup>2 </sup>(1, N=386) p=0.000} and further that 50% of foods eaten in that community are purchased {χ<sup>2</sup> (1, N=386)=0.1818, p=0.6698}. The foods eaten by 75.2% of the respondents were <em>Oreochromis niloticus</em>, <em>Lates niloticus</em>, and <em>Sorghum bicolour</em>, 64.1% vegetables and that both children and adults eat same types of food, and further that traditional foods which have become extinct are mainly vegetables (46%). The study established that selenium levels in foods eaten in Pala sub-locations varies with traditional vegetables having higher levels of selenium; for example<em>, Laurnea cornuta</em> (148.5 mg/kg), <em>Cleome</em> <em>gynandra </em>(121.5 mg/kg), <em>Vignia ungulata</em> (21.97 mg/kg), while <em>Rastrineobola argentea</em> (51 mg/kg), <em>Lates niloticus</em> (0), <em>Oreochromis niloticus </em>(0) <em>Sorgum bicolour</em> (19.97 mg/kg), and <em>Sorgum bicolour </em>(0). The study showed that there is an inverse relationship between foods eaten and selenium levels {RR=1.21, p=0.000}, with foods eaten by 75.2% of respondents (<em>Oreochromis niloticus</em>/<em>Lates niloticus)</em> having no detectable selenium. The four soil types identified in the study area had varying selenium levels with pleat loam (13.3 mg/kg), sandy loam (10.7 mg/kg), clay (2.8 mg/kg) and loam (4.8 mg/kg). It was concluded from this study that for the foods eaten by most of the respondents the selenium levels were below Daily Reference Intake. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=determinants" title="determinants">determinants</a>, <a href="https://publications.waset.org/abstracts/search?q=HIV" title=" HIV"> HIV</a>, <a href="https://publications.waset.org/abstracts/search?q=food" title=" food"> food</a>, <a href="https://publications.waset.org/abstracts/search?q=fishing" title=" fishing"> fishing</a>, <a href="https://publications.waset.org/abstracts/search?q=Selenium" title=" Selenium"> Selenium</a> </p> <a href="https://publications.waset.org/abstracts/56060/determinants-of-selenium-intake-in-a-high-hiv-prevalence-fishing-community-in-bondo-district-kenya" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56060.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">260</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">35</span> How Holton’s Thematic Analysis Can Help to Understand Why Fred Hoyle Never Accepted Big Bang Cosmology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Joao%20Barbosa">Joao Barbosa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> After an intense dispute between the big bang cosmology and its big rival, the steady-state cosmology, some important experimental observations, such as the determination of helium abundance in the universe and the discovery of the cosmic background radiation in the 1960s were decisive for the progressive and wide acceptance of big bang cosmology and the inevitable abandonment of steady-state cosmology. But, despite solid theoretical support and those solid experimental observations favorable to big bang cosmology, Fred Hoyle, one of the proponents of the steady-state and the main opponent of the idea of the big bang (which, paradoxically, himself he baptized), never gave up and continued to fight for the idea of a stationary (or quasi-stationary) universe until the end of his life, even after decades of widespread consensus around the big bang cosmology. We can try to understand this persistent attitude of Hoyle by applying Holton’s thematic analysis to cosmology. Holton recognizes in the scientific activity a dimension that, even unconscious or not assumed, is nevertheless very important in the work of scientists, in implicit articulation with the experimental and the theoretical dimensions of science. This is the thematic dimension, constituted by themata – concepts, methodologies, and hypotheses with a metaphysical, aesthetic, logical, or epistemological nature, associated both with the cultural context and the individual psychology of scientists. In practice, themata can be expressed through personal preferences and choices that guide the individual and collective work of scientists. Thematic analysis shows that big bang cosmology is mainly based on a set of themata consisting of evolution, finitude, life cycle, and change; the cosmology of the steady-state is based on opposite themata: steady-state, infinity, continuous existence, and constancy. The passionate controversy that these cosmological views carried out is part of an old cosmological opposition: the thematic opposition between an evolutionary view of the world (associated with Heraclitus) and a stationary view (associated with Parmenides). Personal preferences seem to have been important in this (thematic) controversy, and the thematic analysis that was developed shows that Hoyle is a very illustrative example of a life-long personal commitment to some themata, in this case to the opposite themata of the big bang cosmology. His struggle against the big bang idea was strongly based on philosophical and even religious reasons – which, in a certain sense and in a Holtonian perspective, is related to thematic preferences. In this personal and persistent struggle, Hoyle always refused the way how some experimental observations were considered decisive in favor of the big bang idea, arguing that the success of this idea is based on sociological and cultural prejudices. This Hoyle’s attitude is a personal thematic attitude, in which the acceptance or rejection of what is presented as proof or scientific fact is conditioned by themata: what is a proof or a scientific fact for one scientist is something yet to be established for another scientist who defends different or even opposites themata. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cosmology" title="cosmology">cosmology</a>, <a href="https://publications.waset.org/abstracts/search?q=experimental%20observations" title=" experimental observations"> experimental observations</a>, <a href="https://publications.waset.org/abstracts/search?q=fred%20hoyle" title=" fred hoyle"> fred hoyle</a>, <a href="https://publications.waset.org/abstracts/search?q=interpretation" title=" interpretation"> interpretation</a>, <a href="https://publications.waset.org/abstracts/search?q=life-long%20personal%20commitment" title=" life-long personal commitment"> life-long personal commitment</a>, <a href="https://publications.waset.org/abstracts/search?q=Themata" title=" Themata"> Themata</a> </p> <a href="https://publications.waset.org/abstracts/135472/how-holtons-thematic-analysis-can-help-to-understand-why-fred-hoyle-never-accepted-big-bang-cosmology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135472.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">168</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">34</span> Health Hazards of Performance Enhancing Drugs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Austin%20Oduor%20Otieno">Austin Oduor Otieno</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There is an ingrained belief that the use of performance-enhancing drugs by athletes enable them to perform better. While this has been found to be truth, it also raises ethical and health issues. This paper analyzes the health hazards associated with performance enhancing drugs. It seeks to achieve this through the analysis of different academic journals as well as publications on the relationship between doping in sports and health. It concludes that there are inherent health hazards associated with the use of performance-enhancing drugs as they affect the physical and psychological health and wellbeing of a user (athlete). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=doping" title="doping">doping</a>, <a href="https://publications.waset.org/abstracts/search?q=health%20hazards" title=" health hazards"> health hazards</a>, <a href="https://publications.waset.org/abstracts/search?q=athletes" title=" athletes"> athletes</a>, <a href="https://publications.waset.org/abstracts/search?q=drugs" title=" drugs"> drugs</a> </p> <a href="https://publications.waset.org/abstracts/135349/health-hazards-of-performance-enhancing-drugs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135349.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">164</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">33</span> Projected Uncertainties in Herbaceous Production Result from Unpredictable Rainfall Pattern and Livestock Grazing in a Humid Tropical Savanna Ecosystem</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Osieko%20Okach">Daniel Osieko Okach</a>, <a href="https://publications.waset.org/abstracts/search?q=Joseph%20Otieno%20Ondier"> Joseph Otieno Ondier</a>, <a href="https://publications.waset.org/abstracts/search?q=Gerhard%20Rambold"> Gerhard Rambold</a>, <a href="https://publications.waset.org/abstracts/search?q=John%20Tenhunen"> John Tenhunen</a>, <a href="https://publications.waset.org/abstracts/search?q=Bernd%20Huwe"> Bernd Huwe</a>, <a href="https://publications.waset.org/abstracts/search?q=Dennis%20Otieno"> Dennis Otieno</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Increased human activities such as grazing, logging, and agriculture alongside unpredictable rainfall patterns have been detrimental to the ecosystem service delivery, therefore compromising its productivity potential. This study aimed at simulating the impact of drought (50%) and enhanced rainfall (150%) on the future herbaceous CO2 uptake, biomass production and soil C:N dynamics in a humid savanna ecosystem influenced by livestock grazing. Rainfall pattern was predicted using manipulation experiments set up to reduce (50%) and increase (150%) ambient (100%) rainfall amounts in grazed and non-grazed plots. The impact of manipulated rainfall regime on herbaceous CO2 fluxes, biomass production and soil C:N dynamics was measured against volumetric soil water content (VWC) logged every 30 minutes using the 5TE (Decagon Devices Inc., Washington, USA) soil moisture sensors installed (at 20 cm soil depth) in every plots. Herbaceous biomass was estimated using destructive method augmented by standardized photographic imaging. CO2 fluxes were measured using the ecosystem chamber method and the gas analysed using LI-820 gas analyzer (USA). C:N ratio was calculated from the soil carbon and Nitrogen contents (analyzed using EA2400CHNS/O and EA2410 N elemental analyzers respectively) of different plots under study. The patterning of VWC was directly influenced by the rainfall amount with lower VWC observed in the grazed compared to the non-grazed plots. Rainfall variability, grazing and their interaction significantly affected changes in VWC (p < 0.05) and subsequently total biomass and CO2 fluxes. VWC had a strong influence on CO2 fluxes under 50% rainfall reduction in the grazed (r2 = 0.91; p < 0.05) and ambient rainfall in the ungrazed (r2 = 0.77; p < 0.05). The dependence of biomass on VWC across plots was enhanced under grazed (r2 = 0.78 - 0.87; p < 0.05) condition as compared to ungrazed (r2 = 0.44 - 0.85; p < 0.05). The C:N ratio was however not correlated to VWC across plots. This study provides insight on how the predicted trends in humid savanna will respond to changes influenced by rainfall variability and livestock grazing and consequently the sustainable management of such ecosystems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CO2%20fluxes" title="CO2 fluxes">CO2 fluxes</a>, <a href="https://publications.waset.org/abstracts/search?q=rainfall%20manipulation" title=" rainfall manipulation"> rainfall manipulation</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20properties" title=" soil properties"> soil properties</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainability" title=" sustainability"> sustainability</a> </p> <a href="https://publications.waset.org/abstracts/103563/projected-uncertainties-in-herbaceous-production-result-from-unpredictable-rainfall-pattern-and-livestock-grazing-in-a-humid-tropical-savanna-ecosystem" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/103563.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">133</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">32</span> Optimizing Inanda Dam Using Water Resources Models</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=O.%20I.%20Nkwonta">O. I. Nkwonta</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Dzwairo"> B. Dzwairo</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Adeyemo"> J. Adeyemo</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Jaiyola"> A. Jaiyola</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Sawyerr"> N. Sawyerr</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Otieno"> F. Otieno</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effective management of water resources is of great importance to ensure the supply of water resources to support changing water requirements over a selected planning horizon and in a sustainable and cost-effective way. Essentially, the purpose of the water resources planning process is to balance the available water resources in a system with the water requirements and losses to which the system is subjected. In such situations, Water resources yield and planning model can be used to solve those difficulties. It has an advantage over other models by managing model runs, developing a representative system network, modelling incremental sub-catchments, creating a variety of standard system features, special modelling features, and run result output options. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=complex" title="complex">complex</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20resources" title=" water resources"> water resources</a>, <a href="https://publications.waset.org/abstracts/search?q=planning" title=" planning"> planning</a>, <a href="https://publications.waset.org/abstracts/search?q=cost%20effective%20and%20management" title=" cost effective and management"> cost effective and management</a> </p> <a href="https://publications.waset.org/abstracts/25801/optimizing-inanda-dam-using-water-resources-models" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25801.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">573</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">31</span> Optimising the Reservoir Operation Using Water Resources Yield and Planning Model at Inanda Dam, uMngeni Basin</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=O.%20Nkwonta">O. Nkwonta</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Dzwairo"> B. Dzwairo</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Otieno"> F. Otieno</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Adeyemo"> J. Adeyemo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effective management of water resources is of great importance to ensure the supply of water resources to support changing water requirements over a selected planning horizon and in a sustainable and cost-effective way. Essentially, the purpose of the water resources planning process is to balance the available water resources in a system with the water requirements and losses to which the system is subjected. In such situations, water resources yield and planning model can be used to solve those difficulties. It has an advantage over other models by managing model runs, developing a representative system network, modelling incremental sub-catchments, creating a variety of standard system features, special modelling features, and run result output options. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=complex" title="complex">complex</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20resources" title=" water resources"> water resources</a>, <a href="https://publications.waset.org/abstracts/search?q=planning" title=" planning"> planning</a>, <a href="https://publications.waset.org/abstracts/search?q=cost%20effective" title=" cost effective"> cost effective</a>, <a href="https://publications.waset.org/abstracts/search?q=management" title=" management"> management</a> </p> <a href="https://publications.waset.org/abstracts/18597/optimising-the-reservoir-operation-using-water-resources-yield-and-planning-model-at-inanda-dam-umngeni-basin" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18597.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">450</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">30</span> Development of an Interagency Crime Management System for Nigeria’s Law Enforcement Agencies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Abba%20Jallo">Muhammad Abba Jallo</a>, <a href="https://publications.waset.org/abstracts/search?q=Fred%20Fudah%20Moveh"> Fred Fudah Moveh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study addresses the challenges faced by Nigerian law enforcement agencies due to the lack of an integrated crime management system. While various agencies use ICT-based systems, the absence of interoperability creates barriers to effective collaboration and information sharing. The research proposes the development of an Interagency Crime Management System (ICMS), which integrates the Crime Management Systems (CMS) of different agencies through an Application Program Interface (API). The system is designed to allow all law enforcement agencies to input data using a standardized format, improving crime tracking, reporting, and management across Nigeria. This paper details the design and implementation process, highlighting the benefits of enhanced collaboration for crime management. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=crime%20management" title="crime management">crime management</a>, <a href="https://publications.waset.org/abstracts/search?q=Nigeria" title=" Nigeria"> Nigeria</a>, <a href="https://publications.waset.org/abstracts/search?q=law%20enforcement" title=" law enforcement"> law enforcement</a>, <a href="https://publications.waset.org/abstracts/search?q=ICT" title=" ICT"> ICT</a> </p> <a href="https://publications.waset.org/abstracts/192231/development-of-an-interagency-crime-management-system-for-nigerias-law-enforcement-agencies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/192231.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">19</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">29</span> Modelling Public Knowledge and Attitude towards Genetically Modified Maize in Kenya</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ezrah%20Kipkirui%20Tonui">Ezrah Kipkirui Tonui</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20Otieno%20Orwa"> George Otieno Orwa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A survey of 138 farmers was conducted in Rift valley, Kenya, in November and December 2013 in three counties (Uasin-gishu, Elgeyo-marakwet, and Tranzoia) to determine public knowledge and attitude towards genetically modified (GM) maize. Above two third (70%) of the respondents had knowledge of GM maize, mostly those educated and male. Female was found to be having low knowledge on GM maize. Public acknowledged the technology’s potential positive impacts, with more than 90% willing to adopt and more than 98% willing to buy GM seedlings at any given price. A small percentage less than 3% were of a negative opinion about willing to buy and adopt GM seeds. We conclude that GM technology has a role to play in food security in Kenya. However, the public needs more information about the technology, which can be provided through established sources of information and training. Finally, public knowledge and attitude on GM maize should be studied on a regular basis, and the survey population broadened to 47 counties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=public" title="public">public</a>, <a href="https://publications.waset.org/abstracts/search?q=knowledge" title=" knowledge"> knowledge</a>, <a href="https://publications.waset.org/abstracts/search?q=attitudes" title=" attitudes"> attitudes</a>, <a href="https://publications.waset.org/abstracts/search?q=GM%20maize" title=" GM maize"> GM maize</a>, <a href="https://publications.waset.org/abstracts/search?q=Kenya" title=" Kenya"> Kenya</a> </p> <a href="https://publications.waset.org/abstracts/8651/modelling-public-knowledge-and-attitude-towards-genetically-modified-maize-in-kenya" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8651.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">308</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28</span> Code-Switching and Code Mixing among Ogba-English Bilingual Conversations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ben-Fred%20Ohia">Ben-Fred Ohia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Code-switching and code-mixing are linguistic behaviours that arise in a bilingual situation. They limit speakers in a conversation to decide which code they should use to utter particular phrases or words in the course of carrying out their utterance. Every human society is characterized by the existence of diverse linguistic varieties. The speakers of these varieties at some points have various degrees of contact with the non-speakers of their variety, which one of the outcomes of the linguistic contact is code-switching or code-mixing. The work discusses the nature of code-switching and code-mixing in Ogba-English bilinguals’ speeches. It provides a detailed explanation of the concept of code-switching and code-mixing and explains the typology of code-switching and code-mixing and their manifestation in Ogba-English bilingual speakers’ speeches. The findings reveal that code-switching and code-mixing are functionally motivated and being triggered by various conversational contexts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bilinguals" title="bilinguals">bilinguals</a>, <a href="https://publications.waset.org/abstracts/search?q=code-mixing" title=" code-mixing"> code-mixing</a>, <a href="https://publications.waset.org/abstracts/search?q=code-switching" title=" code-switching"> code-switching</a>, <a href="https://publications.waset.org/abstracts/search?q=Ogba" title=" Ogba"> Ogba</a> </p> <a href="https://publications.waset.org/abstracts/122982/code-switching-and-code-mixing-among-ogba-english-bilingual-conversations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/122982.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">181</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">27</span> The Role of Information and Communication Technology in Curbing Electoral Malpractices in Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fred%20Fudah%20Moveh">Fred Fudah Moveh</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Abba%20Jallo"> Muhammad Abba Jallo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Electoral fraud remains a persistent threat to democracy in Nigeria, undermining public trust and stalling political development. This study explores the role of Information and Communication Technology (ICT) in curbing electoral fraud, focusing on its application in recent Nigerian elections. The paper identifies the main forms of electoral fraud, evaluates the effectiveness of ICT-based interventions like the Permanent Voter Card (PVC) and the Bi-modal Voter Accreditation System (BVAS), and discusses challenges such as poor infrastructure, voter intimidation, and legal inadequacies. Data was collected through structured questionnaires and interviews and analyzed using SPSS software. Results reveal that while ICT has mitigated some forms of fraud, systemic issues continue to hinder its full potential. The study concludes with recommendations for enhancing the application of ICT in Nigeria’s electoral process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ICT" title="ICT">ICT</a>, <a href="https://publications.waset.org/abstracts/search?q=electoral%20fraud" title=" electoral fraud"> electoral fraud</a>, <a href="https://publications.waset.org/abstracts/search?q=election%20process" title=" election process"> election process</a>, <a href="https://publications.waset.org/abstracts/search?q=Nigeria" title=" Nigeria"> Nigeria</a>, <a href="https://publications.waset.org/abstracts/search?q=political%20instability" title=" political instability"> political instability</a> </p> <a href="https://publications.waset.org/abstracts/192207/the-role-of-information-and-communication-technology-in-curbing-electoral-malpractices-in-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/192207.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">25</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">26</span> Fertility Transition in Sub-Saharan Africa: The Role Family Planning Programs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vincent%20Otieno">Vincent Otieno</a>, <a href="https://publications.waset.org/abstracts/search?q=Alfred%20Agwanda"> Alfred Agwanda</a>, <a href="https://publications.waset.org/abstracts/search?q=Anne%20Khasakhala"> Anne Khasakhala</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Among the neo-Malthusian adherents, it is believed that rapid population growth strain countries’ capacity and performance. Fertility have however decelerated in most of the countries in the recent past. Scholars have concentrated on wide range of factors associated with fertility majorly at the national scale with some opining that analysis of trends and differentials in the various fertility parameters have been discussed extensively. However, others believe that considerably less attention has been paid to the fertility preference- a pathway through which various variables act on fertility. The Sub-Saharan African countries’ disparities amid almost similarities in policies is a cause of concern to demographers. One would point at the meager synergies that have been focused on the fertility preference as well, especially at the macro scale. Using Bongaarts reformulation of Easterlin and Crimmins (1985) conceptual scheme, the understanding of the current transition based on the fertility preference in general would help to provide explanations to the observed latest dynamics. This study therefore is an attempt to explain the current fertility transition through women’s fertility preference. Results reveal that indeed fertility transition is on course in most of the sub-Saharan countries with huge disparities in fertility preferences and its implementation indices. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fertility%20preference" title="fertility preference">fertility preference</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20degree%20of%20implementation%20index" title=" the degree of implementation index"> the degree of implementation index</a>, <a href="https://publications.waset.org/abstracts/search?q=sub-Saharan%20Africa" title=" sub-Saharan Africa"> sub-Saharan Africa</a>, <a href="https://publications.waset.org/abstracts/search?q=transition" title=" transition"> transition</a> </p> <a href="https://publications.waset.org/abstracts/95632/fertility-transition-in-sub-saharan-africa-the-role-family-planning-programs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/95632.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">243</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">25</span> An Investigation into Kenyan Teachers’ Views of Children’s Emotional and Behavioural Difficulties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fred%20Mageto">Fred Mageto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A great number of children in mainstream schools across Kenya are currently living with emotional, behavioural difficulties. This study aims to explore teachers’ perceptions of children’s emotional and behavioural difficulties (EBD) and their attributions of the causes of EBD. The relevance of this area of study to current educational practice is illustrated in the fact that primary school teachers in Kenya find classroom behaviour problems one of the major difficulties they face. The information presented in this study was gathered from 182 teachers that responded back to the survey, of whom 27 teachers were later interviewed. In general, teachers’ perceptions of EBD reflect personal experience, training, and attitudes. Teachers appear from this study to use words such as indifferent, frightened, withdrawn, aggressive, disobedient, hyperactive, less ambitious, lacking concentration, and academically weak to describe pupils with emotional and behavioural difficulties (EBD). The implications of this study are envisaged as being extremely important to support teachers addressing children’s EBD and shed light on the contributing factors to EBD for a successful teaching-learning process in Libyan primary schools. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=teachers" title="teachers">teachers</a>, <a href="https://publications.waset.org/abstracts/search?q=children" title=" children"> children</a>, <a href="https://publications.waset.org/abstracts/search?q=learning" title=" learning"> learning</a>, <a href="https://publications.waset.org/abstracts/search?q=emotional%20and%20behaviour%20difficulties" title=" emotional and behaviour difficulties"> emotional and behaviour difficulties</a> </p> <a href="https://publications.waset.org/abstracts/135783/an-investigation-into-kenyan-teachers-views-of-childrens-emotional-and-behavioural-difficulties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135783.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">163</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">24</span> Reimagining the Potential of Street Lighting Infrastructure in Nairobi City</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Clifford%20Otieno%20Ochieng">Clifford Otieno Ochieng</a>, <a href="https://publications.waset.org/abstracts/search?q=Nsenda%20Lukumwena"> Nsenda Lukumwena</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cities worldwide and most notably those in the global south, including Nairobi City are experiencing accelerated population growth and urban sprawl, accompanied with multiple socioeconomic challenges’ which in turn increase the pressure on already limited infrastructure such as public lighting and on limited financial resources. Based on this premise, through reimaging the value of street lighting infrastructure, the study attempts to highlight the affordance and affordability of streetlights and suggests them as a tool to optimally address limited financial resources that characterize cities in the global south. As a methodology, the paper reviews and analyzes literature available online including Nairobi city budgets; reports from Kenya Power, World Health Organization and United Nations; and articles on enterprise level Internet of Things (IoT) solutions. In conclusion, this study illustrates that streetlights can go well beyond their traditional roles of illuminating cities at night. They can be as suggested in this paper charging stations, communication network terminals and disease prevention nodes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=affordance" title="affordance">affordance</a>, <a href="https://publications.waset.org/abstracts/search?q=Nairobi" title=" Nairobi"> Nairobi</a>, <a href="https://publications.waset.org/abstracts/search?q=developing%20economies" title=" developing economies"> developing economies</a>, <a href="https://publications.waset.org/abstracts/search?q=IoT" title=" IoT"> IoT</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20street%20lights" title=" smart street lights"> smart street lights</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20cities" title=" smart cities"> smart cities</a> </p> <a href="https://publications.waset.org/abstracts/94400/reimagining-the-potential-of-street-lighting-infrastructure-in-nairobi-city" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/94400.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">185</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">23</span> A Framework for Strategy Development in Small Companies: A Case Study of a Telecommunication Firm</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maryam%20Goodarzi">Maryam Goodarzi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mahdieh%20Sheikhi"> Mahdieh Sheikhi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Goodarzi"> Mehdi Goodarzi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study intends to offer an appropriate strategy development framework for a telecommunication firm (as a case study) which works on Information and Communication Technology (ICT) projects, development of telecommunication networks, and maintenance of local networks, according to its dominant condition. In this approach, first, the objectives were set and the mission was defined. Then, the capability was assessed by SWOT matrix. Using SPACE matrix, the strategy of the company was determined. The strategic direction is set and an appropriate and superior strategy was developed and offered employing QSPM matrix. The theoretical framework or conceptual model of the present study first involves 4 stages of framework development and then from stage 3 (assessing capability) onward, a strategic management model by Fred R. David. In this respect, the tools and methods offered in the framework are appropriate for all kinds of organizations, particularly small firms, and help strategists identify, evaluate, and select strategies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=strategy%20formulation" title="strategy formulation">strategy formulation</a>, <a href="https://publications.waset.org/abstracts/search?q=firm%20mission" title=" firm mission"> firm mission</a>, <a href="https://publications.waset.org/abstracts/search?q=strategic%20direction" title=" strategic direction"> strategic direction</a>, <a href="https://publications.waset.org/abstracts/search?q=space%20diagram" title=" space diagram"> space diagram</a>, <a href="https://publications.waset.org/abstracts/search?q=quantitative%20strategic%20planning%20matrix" title=" quantitative strategic planning matrix"> quantitative strategic planning matrix</a>, <a href="https://publications.waset.org/abstracts/search?q=SWOT%20matrix" title=" SWOT matrix"> SWOT matrix</a> </p> <a href="https://publications.waset.org/abstracts/7921/a-framework-for-strategy-development-in-small-companies-a-case-study-of-a-telecommunication-firm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7921.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">374</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">22</span> Admission Control Policy for Remanufacturing Activities with Quality Variation of Returns</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sajjad%20Farahani">Sajjad Farahani</a>, <a href="https://publications.waset.org/abstracts/search?q=Wilkistar%20Otieno"> Wilkistar Otieno</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaohang%20Yue"> Xiaohang Yue</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper develops a model for the optimal disposition decision for product returns in a remanufacturing system with limited recoverable inventory capacity. In this model, a constant demand is satisfied by remanufacturing returned products which are up to the minimum required quality grade. The quality grade of returned products is uncertain and remanufacturing cost increases as the quality level decreases, and remanufacturer wishes to determine which returned product to accept to be remanufactured for reselling, and any unaccepted returns may be salvaged at a value that increases with their quality level. Accepted returns can be stocked for remanufacturing upon demand requests, but incur a holding cost. A Markov decision problem is formulated in order to evaluate various performance measures for this system and obtain the optimal remanufacturing policy. A detailed numerical study reveals that our approach to the disposition problem outperforms the current industrial practice ignoring quality grade of returned products. In addition, we identify conditions under which this improvement is the highest. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=green%20supply%20chain%20management" title="green supply chain management">green supply chain management</a>, <a href="https://publications.waset.org/abstracts/search?q=matrix%20geometric%20method" title=" matrix geometric method"> matrix geometric method</a>, <a href="https://publications.waset.org/abstracts/search?q=production%20recovery" title=" production recovery"> production recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=reverse%20supply%20chains" title=" reverse supply chains"> reverse supply chains</a> </p> <a href="https://publications.waset.org/abstracts/52851/admission-control-policy-for-remanufacturing-activities-with-quality-variation-of-returns" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/52851.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">309</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">21</span> Grief and Repenting: The Engaging Remembrance in Thomas Hardy’s ‘Poems of 1912-13’</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chih-Chun%20Tang">Chih-Chun Tang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nostalgia, to some people, may seem foolhardy in a way. However, nostalgia is a completely and intensely private but social, collective emotion. It has continuing consequence and outgrowth for our lives as social actions. It leads people to hunt and explore remembrance of persons and places of our past in an effort to confer meaning of persons and places of present. In the ‘Poems of 1912-13’ Thomas Hardy, a British poet, composed a series of poems after the unexpected death of his long-disaffected wife, Emma. The series interprets the cognitive and emotional concussion of Emma’s death on Hardy, concerning his mind and real visit to the landscape in Cornwall, England. Both spaces perform the author’s innermost in thought to his late wife and to the landscape. They present an apparent counterpart of the poet and his afflicted conscience. After Emma had died, Hardy carried her recollections alive by roaming about in the real visit and whimsical land (space) they once had drifted and meandered. This paper highlights the nostalgias and feds that seem endlessly to crop up. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thomas%20Hardy" title="Thomas Hardy">Thomas Hardy</a>, <a href="https://publications.waset.org/abstracts/search?q=remembrance" title=" remembrance"> remembrance</a>, <a href="https://publications.waset.org/abstracts/search?q=psychological" title=" psychological"> psychological</a>, <a href="https://publications.waset.org/abstracts/search?q=poems%201912-13" title=" poems 1912-13"> poems 1912-13</a>, <a href="https://publications.waset.org/abstracts/search?q=Fred%20Davis" title=" Fred Davis"> Fred Davis</a>, <a href="https://publications.waset.org/abstracts/search?q=nostalgia" title=" nostalgia"> nostalgia</a> </p> <a href="https://publications.waset.org/abstracts/57051/grief-and-repenting-the-engaging-remembrance-in-thomas-hardys-poems-of-1912-13" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57051.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">272</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">20</span> The Effects of Soil Chemical Characteristics on Accumulation of Native Selenium by Zea mays Grains in Maize Belt in Kenya</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20B.%20Otieno">S. B. Otieno</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20S.%20Jayne"> T. S. Jayne</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Muyanga"> M. Muyanga</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Selenium which is an-antioxidant is important for human health enters food chain through crops. In Kenya Zea mays is consumed by 96% of population hence is a cheap and convenient method to provide selenium to large number of population. Several soil factors are known to have antagonistic effects on selenium speciation hence the uptake by Zea mays. No investigation in Kenya has been done to determine the effects of soil characteristics (pH, Tcarbon, CEC, Eh) affect accumulation of selenium in Zea mays grains in Maize Belt in Kenya. About 100 Zea mays grain samples together with 100 soil samples were collected from the study site, put in separate labeled Ziplocs and were transported to laboratories at room temperature for analysis. Maize grains were analyzed for selenium while soil samples were analyzed for pH, Cat Ion Exchange Capacity, total carbon, and electrical conductivity. The mean selenium in Zea mays grains varied from 1.82 ± 0.76 mg/Kg to 11±0.86 mg/Kg. There was no significant difference between selenium levels between different grain batches {χ (Df =76) = 26.04 P= 1.00} The pH levels varied from 5.43± 0.58 to 5.85± 0.32. No significant correlations between selenium in grains and soil pH (Pearson’s correlations = - 0.143), and between selenium levels in grains and the four (pH,Tcarbon,CEC,Eh) soil chemical characteristics {F (4,91) = 0.721 p = 0.579} was observed.It can be concluded that the soil chemical characteristics in the study site did not significantly affect the accumulation of native selenium in Zea mays grains. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=maize" title="maize">maize</a>, <a href="https://publications.waset.org/abstracts/search?q=native" title=" native"> native</a>, <a href="https://publications.waset.org/abstracts/search?q=soil" title=" soil"> soil</a>, <a href="https://publications.waset.org/abstracts/search?q=selenium" title=" selenium"> selenium</a> </p> <a href="https://publications.waset.org/abstracts/38115/the-effects-of-soil-chemical-characteristics-on-accumulation-of-native-selenium-by-zea-mays-grains-in-maize-belt-in-kenya" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38115.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">456</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">19</span> Walls, Barriers, and Fences to Informal Political Economy of Land Resource Accesses: A Case of Banyabunagana Along with Uganda–Congo Border, South Western Uganda, Kisoro District</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Niringiye%20Fred">Niringiye Fred</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Banyabunagana has always had access to land resources for grazing animals, sand mining, and farmland across the border in the Democratic Republic of Congo during the pre-colonial and colonial times, usually on an informal arrangement facilitated by kinship ties and rent transactions for these resources. However, in recent periods, the government of the Democratic Republic of the Congo (DRC) has been pursuing a policy of constructing barriers such as walls and fences so that Banyabunagana communities do not access the land on the DRC side of the border. This is happening in the background of increased and intensified demand for land use on the side of the Ugandan community. This paper will attempt to discuss the reasons behind the construction of walls, fences, and other barriers which deny access to land for Banyabunagana communities in Bunagana Parish, Muramba Sub-county- Kisoro district, Uganda. The research will attempt to answer the following main questions, among others, whether there are the factors that explain the construction of walls and fences which could limit or deny access to the informal use of land and other resources and whether policy options to ensure continued access to land and other resources for local communities. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=border" title="border">border</a>, <a href="https://publications.waset.org/abstracts/search?q=walls" title=" walls"> walls</a>, <a href="https://publications.waset.org/abstracts/search?q=fences" title=" fences"> fences</a>, <a href="https://publications.waset.org/abstracts/search?q=land%20resource%20access" title=" land resource access"> land resource access</a> </p> <a href="https://publications.waset.org/abstracts/153467/walls-barriers-and-fences-to-informal-political-economy-of-land-resource-accesses-a-case-of-banyabunagana-along-with-uganda-congo-border-south-western-uganda-kisoro-district" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/153467.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">124</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18</span> Multimodal Database of Retina Images for Africa: The First Open Access Digital Repository for Retina Images in Sub Saharan Africa</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Simon%20Arunga">Simon Arunga</a>, <a href="https://publications.waset.org/abstracts/search?q=Teddy%20Kwaga"> Teddy Kwaga</a>, <a href="https://publications.waset.org/abstracts/search?q=Rita%20Kageni"> Rita Kageni</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Gichangi"> Michael Gichangi</a>, <a href="https://publications.waset.org/abstracts/search?q=Nyawira%20Mwangi"> Nyawira Mwangi</a>, <a href="https://publications.waset.org/abstracts/search?q=Fred%20Kagwa"> Fred Kagwa</a>, <a href="https://publications.waset.org/abstracts/search?q=Rogers%20Mwavu"> Rogers Mwavu</a>, <a href="https://publications.waset.org/abstracts/search?q=Amos%20Baryashaba"> Amos Baryashaba</a>, <a href="https://publications.waset.org/abstracts/search?q=Luis%20F.%20Nakayama"> Luis F. Nakayama</a>, <a href="https://publications.waset.org/abstracts/search?q=Katharine%20Morley"> Katharine Morley</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Morley"> Michael Morley</a>, <a href="https://publications.waset.org/abstracts/search?q=Leo%20A.%20Celi"> Leo A. Celi</a>, <a href="https://publications.waset.org/abstracts/search?q=Jessica%20Haberer"> Jessica Haberer</a>, <a href="https://publications.waset.org/abstracts/search?q=Celestino%20Obua"> Celestino Obua</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Purpose: The main aim for creating the Multimodal Database of Retinal Images for Africa (MoDRIA) was to provide a publicly available repository of retinal images for responsible researchers to conduct algorithm development in a bid to curb the challenges of ophthalmic artificial intelligence (AI) in Africa. Methods: Data and retina images were ethically sourced from sites in Uganda and Kenya. Data on medical history, visual acuity, ocular examination, blood pressure, and blood sugar were collected. Retina images were captured using fundus cameras (Foru3-nethra and Canon CR-Mark-1). Images were stored on a secure online database. Results: The database consists of 7,859 retinal images in portable network graphics format from 1,988 participants. Images from patients with human immunodeficiency virus were 18.9%, 18.2% of images were from hypertensive patients, 12.8% from diabetic patients, and the rest from normal’ participants. Conclusion: Publicly available data repositories are a valuable asset in the development of AI technology. Therefore, is a need for the expansion of MoDRIA so as to provide larger datasets that are more representative of Sub-Saharan data. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=retina%20images" title="retina images">retina images</a>, <a href="https://publications.waset.org/abstracts/search?q=MoDRIA" title=" MoDRIA"> MoDRIA</a>, <a href="https://publications.waset.org/abstracts/search?q=image%20repository" title=" image repository"> image repository</a>, <a href="https://publications.waset.org/abstracts/search?q=African%20database" title=" African database"> African database</a> </p> <a href="https://publications.waset.org/abstracts/169515/multimodal-database-of-retina-images-for-africa-the-first-open-access-digital-repository-for-retina-images-in-sub-saharan-africa" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169515.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">127</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17</span> Flood Disaster Prevention and Mitigation in Nigeria Using Geographic Information System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dinebari%20Akpee">Dinebari Akpee</a>, <a href="https://publications.waset.org/abstracts/search?q=Friday%20Aabe%20Gaage"> Friday Aabe Gaage</a>, <a href="https://publications.waset.org/abstracts/search?q=Florence%20Fred%20Nwaigwu"> Florence Fred Nwaigwu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Natural disasters like flood affect many parts of the world including developing countries like Nigeria. As a result, many human lives are lost, properties damaged and so much money is lost in infrastructure damages. These hazards and losses can be mitigated and reduced by providing reliable spatial information to the generality of the people through about flood risks through flood inundation maps. Flood inundation maps are very crucial for emergency action plans, urban planning, ecological studies and insurance rates. Nigeria experience her worst flood in her entire history this year. Many cities were submerged and completely under water due to torrential rainfall. Poor city planning, lack of effective development control among others contributes to the problem too. Geographic information system (GIS) can be used to visualize the extent of flooding, analyze flood maps to produce flood damaged estimation maps and flood risk maps. In this research, the under listed steps were taken in preparation of flood risk maps for the study area: (1) Digitization of topographic data and preparation of digital elevation model using ArcGIS (2) Flood simulation using hydraulic model and integration and (3) Integration of the first two steps to produce flood risk maps. The results shows that GIS can play crucial role in Flood disaster control and mitigation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=flood%20disaster" title="flood disaster">flood disaster</a>, <a href="https://publications.waset.org/abstracts/search?q=risk%20maps" title=" risk maps"> risk maps</a>, <a href="https://publications.waset.org/abstracts/search?q=geographic%20information%20system" title=" geographic information system"> geographic information system</a>, <a href="https://publications.waset.org/abstracts/search?q=hazards" title=" hazards"> hazards</a> </p> <a href="https://publications.waset.org/abstracts/80830/flood-disaster-prevention-and-mitigation-in-nigeria-using-geographic-information-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80830.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">227</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">16</span> The Risk of Hyperglycemia Associated with Use of Dolutegravir among Adults Living with HIV in Kampala, Uganda: A Case Control Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Daphine%20Namara">Daphine Namara</a>, <a href="https://publications.waset.org/abstracts/search?q=Jeremy%20I.%20Schwartz"> Jeremy I. Schwartz</a>, <a href="https://publications.waset.org/abstracts/search?q=Andrew%20K.%20Tusubira"> Andrew K. Tusubira</a>, <a href="https://publications.waset.org/abstracts/search?q=Willi%20McFarland"> Willi McFarland</a>, <a href="https://publications.waset.org/abstracts/search?q=Caroline%20Birungi"> Caroline Birungi</a>, <a href="https://publications.waset.org/abstracts/search?q=Fred%20C.%20Semitala"> Fred C. Semitala</a>, <a href="https://publications.waset.org/abstracts/search?q=Martin%20Muddu"> Martin Muddu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Emerging evidence suggests a possible association between hyperglycemia and dolutegravir (DTG), a preferred first-line antiretroviral agent in sub-Saharan Africa (SSA). There is a need for rigorous studies to validate this association in the face of increasing DTG use and the burden of non-communicable diseases among people living with HIV (PLHIV). We conducted a case-control study to assess the risk of hyperglycemia associated with the use of DTG among PLHIV attending Mulago ISS Clinic in Kampala. Cases had hyperglycemia, while controls had no hyperglycemia, as confirmed by fasting plasma glucose and oral glucose tolerance tests. Demographic, laboratory, and clinical data were collected using interviewer-administered questionnaires and medical record abstraction. The analysis compared cases and controls on DTG use prior to diagnosis of hyperglycemia while controlling for potential confounders using multivariable logistic regression. We included 204 cases and 231 controls. In multivariable analysis, patients with prior DTG use had seven times greater odds of subsequent diagnosis of hyperglycemia compared to those who had non-DTG-based regimens (adjusted odds ratio [aOR] 7.01, 95% CI 1.96-25.09). The odds of hyperglycemia also increased with age (56 years and above vs. 18-35, aOR 12.38, 95% CI 3.79-40.50) and hypertension (aOR 5.78, 95% CI 2.53-13.21). Our study demonstrates a strong association between prior DTG exposure and subsequent diagnosis of hyperglycemia. Given the benefits of DTG, wide-scale use, and the growing burden of diabetes mellitus (DM) in SSA, there is a need for systematic screening for hyperglycemia and consideration of alternate regimens for those at risk for DM. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=HIV" title="HIV">HIV</a>, <a href="https://publications.waset.org/abstracts/search?q=hyperglycemia" title=" hyperglycemia"> hyperglycemia</a>, <a href="https://publications.waset.org/abstracts/search?q=doluteravir" title=" doluteravir"> doluteravir</a>, <a href="https://publications.waset.org/abstracts/search?q=diabetes" title=" diabetes"> diabetes</a> </p> <a href="https://publications.waset.org/abstracts/164554/the-risk-of-hyperglycemia-associated-with-use-of-dolutegravir-among-adults-living-with-hiv-in-kampala-uganda-a-case-control-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164554.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">86</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15</span> Self‑reported Auditory Problems Are Associated with Adverse Mental Health Outcomes and Alcohol Misuse in the UK Armed Forces</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fred%20N.%20H.%20Parker">Fred N. H. Parker</a>, <a href="https://publications.waset.org/abstracts/search?q=Nicola%20T.%20Fear"> Nicola T. Fear</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20A.%20M.%20Stevelink"> S. A. M. Stevelink</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Rafferty"> L. Rafferty</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Purpose Auditory problems, such as hearing loss and tinnitus, have been associated with mental health problems and alcohol misuse in the UK general population and in the US Armed Forces; however, few studies have examined these associations within the UK Armed Forces. The present study examined the association between auditory problems and probable common mental disorders, post-traumatic stress disorder and alcohol misuse. Methods 5474 serving and ex-service personnel from the UK Armed Forces were examined, selected from those who responded to phase two (data collection 2007–09) and phase three (2014–16) of a military cohort study. Multivariable logistic regression was used to examine the association between auditory problems at phase two and mental health problems at phase three. Results 9.7% of participants reported ever experiencing hearing problems alone, 7.9% reported tinnitus within the last month alone, and 7.8% reported hearing problems with tinnitus. After adjustment, hearing problems with tinnitus at phase two was associated with increased odds of probable common mental disorders (AOR = 1.50, 95% CI 1.09–2.08), post-traumatic stress disorder (AOR = 2.30, 95% CI 1.41–3.76), and alcohol misuse (AOR = 1.94, 95% CI 1.28–2.96) at phase three. Tinnitus alone was associated with probable post-traumatic stress disorder (AOR = 1.80, 95% CI 1.03–3.15); however, hearing problems alone were not associated with any outcomes of interest. Conclusions The association between auditory problems and mental health problems emphasizes the importance of the prevention of auditory problems in the Armed Forces: through enhanced audiometric screening, improved hearing protection equipment, and greater levels of utilization of such equipment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=armed%20forces" title="armed forces">armed forces</a>, <a href="https://publications.waset.org/abstracts/search?q=hearing%20problems" title=" hearing problems"> hearing problems</a>, <a href="https://publications.waset.org/abstracts/search?q=tinnitus" title=" tinnitus"> tinnitus</a>, <a href="https://publications.waset.org/abstracts/search?q=mental%20health" title=" mental health"> mental health</a>, <a href="https://publications.waset.org/abstracts/search?q=alcohol%20misuse" title=" alcohol misuse"> alcohol misuse</a> </p> <a href="https://publications.waset.org/abstracts/142704/selfreported-auditory-problems-are-associated-with-adverse-mental-health-outcomes-and-alcohol-misuse-in-the-uk-armed-forces" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/142704.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">166</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">14</span> Ion Beam Polishing of Si in W/Si Multilayer X-Ray Analyzers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Roman%20Medvedev">Roman Medvedev</a>, <a href="https://publications.waset.org/abstracts/search?q=Andrey%20Yakshin"> Andrey Yakshin</a>, <a href="https://publications.waset.org/abstracts/search?q=Konstantin%20Nikolaev"> Konstantin Nikolaev</a>, <a href="https://publications.waset.org/abstracts/search?q=Sergey%20Yakunin"> Sergey Yakunin</a>, <a href="https://publications.waset.org/abstracts/search?q=Fred%20Bijkerk"> Fred Bijkerk</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Multilayer structures are used as spectroscopic elements in fluorescence analysis. These serve the purpose of analyzing soft x-ray emission spectra of materials upon excitation by x-rays or electrons. The analysis then allows quantitative determination of the x-ray emitting elements in the materials. Shorter wavelength range for this application, below 2.5nm, can be covered by using short period multilayers, with a period of 2.5 nm and lower. Thus the detrimental effect on the reflectivity of morphological roughness between materials of the multilayers becomes increasingly pronounced. Ion beam polishing was previously shown to be effective in reducing roughness in some multilayer systems with Si. In this work, we explored W/Si multilayers with the period of 2.5 nm. Si layers were polishing by Ar ions, employing low energy ions, 100 and 80 eV, with the etched Si thickness being in the range 0.1 to 0.5 nm. CuK X-ray diffuse scattering measurements revealed a significant reduction in the diffused scattering in the polished multilayers. However, Grazing Incidence CuK X-ray showed only a marginal reduction of the overall roughness of the systems. Still, measurements of the structures with Grazing Incidence Small Angle X-ray scattering indicated that the vertical correlation length of roughness was strongly reduced in the polished multilayers. These results together suggest that polishing results in the reduction of the vertical propagation of roughness from layer to layer, while only slightly affecting the overall roughness. This phenomenon can be explained by ion-induced surface roughening inherently present in the ion polishing methods. Alternatively, ion-induced densification of thin Si films should also be considered. Finally, the reflectivity of 40% at 0.84 nm at grazing incidence of 9 degrees has been obtained in this work for W/Si multilayers. Analysis of the obtained results is expected to lead to further progress in reflectance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=interface%20roughness" title="interface roughness">interface roughness</a>, <a href="https://publications.waset.org/abstracts/search?q=ion%20polishing" title=" ion polishing"> ion polishing</a>, <a href="https://publications.waset.org/abstracts/search?q=multilayer%20structures" title=" multilayer structures"> multilayer structures</a>, <a href="https://publications.waset.org/abstracts/search?q=W%2FSi" title=" W/Si"> W/Si</a> </p> <a href="https://publications.waset.org/abstracts/98149/ion-beam-polishing-of-si-in-wsi-multilayer-x-ray-analyzers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98149.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">134</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">13</span> A Neural Network for the Prediction of Contraction after Burn Injuries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ginger%20Egberts">Ginger Egberts</a>, <a href="https://publications.waset.org/abstracts/search?q=Marianne%20Schaaphok"> Marianne Schaaphok</a>, <a href="https://publications.waset.org/abstracts/search?q=Fred%20Vermolen"> Fred Vermolen</a>, <a href="https://publications.waset.org/abstracts/search?q=Paul%20van%20Zuijlen"> Paul van Zuijlen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A few years ago, a promising morphoelastic model was developed for the simulation of contraction formation after burn injuries. Contraction can lead to a serious reduction in physical mobility, like a reduction in the range-of-motion of joints. If this is the case in a healing burn wound, then this is referred to as a contracture that needs medical intervention. The morphoelastic model consists of a set of partial differential equations describing both a chemical part and a mechanical part in dermal wound healing. These equations are solved with the numerical finite element method (FEM). In this method, many calculations are required on each of the chosen elements. In general, the more elements, the more accurate the solution. However, the number of elements increases rapidly if simulations are performed in 2D and 3D. In that case, it not only takes longer before a prediction is available, the computation also becomes more expensive. It is therefore important to investigate alternative possibilities to generate the same results, based on the input parameters only. In this study, a surrogate neural network has been designed to mimic the results of the one-dimensional morphoelastic model. The neural network generates predictions quickly, is easy to implement, and there is freedom in the choice of input and output. Because a neural network requires extensive training and a data set, it is ideal that the one-dimensional FEM code generates output quickly. These feed-forward-type neural network results are very promising. Not only can the network give faster predictions, but it also has a performance of over 99%. It reports on the relative surface area of the wound/scar, the total strain energy density, and the evolutions of the densities of the chemicals and mechanics. It is, therefore, interesting to investigate the applicability of a neural network for the two- and three-dimensional morphoelastic model for contraction after burn injuries. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomechanics" title="biomechanics">biomechanics</a>, <a href="https://publications.waset.org/abstracts/search?q=burns" title=" burns"> burns</a>, <a href="https://publications.waset.org/abstracts/search?q=feasibility" title=" feasibility"> feasibility</a>, <a href="https://publications.waset.org/abstracts/search?q=feed-forward%20NN" title=" feed-forward NN"> feed-forward NN</a>, <a href="https://publications.waset.org/abstracts/search?q=morphoelasticity" title=" morphoelasticity"> morphoelasticity</a>, <a href="https://publications.waset.org/abstracts/search?q=neural%20network" title=" neural network"> neural network</a>, <a href="https://publications.waset.org/abstracts/search?q=relative%20surface%20area%20wound" title=" relative surface area wound"> relative surface area wound</a> </p> <a href="https://publications.waset.org/abstracts/130583/a-neural-network-for-the-prediction-of-contraction-after-burn-injuries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130583.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">55</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">12</span> E4D-MP: Time-Lapse Multiphysics Simulation and Joint Inversion Toolset for Large-Scale Subsurface Imaging</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zhuanfang%20Fred%20Zhang">Zhuanfang Fred Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Tim%20C.%20Johnson"> Tim C. Johnson</a>, <a href="https://publications.waset.org/abstracts/search?q=Yilin%20Fang"> Yilin Fang</a>, <a href="https://publications.waset.org/abstracts/search?q=Chris%20E.%20Strickland"> Chris E. Strickland</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A variety of geophysical techniques are available to image the opaque subsurface with little or no contact with the soil. It is common to conduct time-lapse surveys of different types for a given site for improved results of subsurface imaging. Regardless of the chosen survey methods, it is often a challenge to process the massive amount of survey data. The currently available software applications are generally based on the one-dimensional assumption for a desktop personal computer. Hence, they are usually incapable of imaging the three-dimensional (3D) processes/variables in the subsurface of reasonable spatial scales; the maximum amount of data that can be inverted simultaneously is often very small due to the capability limitation of personal computers. Presently, high-performance or integrating software that enables real-time integration of multi-process geophysical methods is needed. E4D-MP enables the integration and inversion of time-lapsed large-scale data surveys from geophysical methods. Using the supercomputing capability and parallel computation algorithm, E4D-MP is capable of processing data across vast spatiotemporal scales and in near real time. The main code and the modules of E4D-MP for inverting individual or combined data sets of time-lapse 3D electrical resistivity, spectral induced polarization, and gravity surveys have been developed and demonstrated for sub-surface imaging. E4D-MP provides capability of imaging the processes (e.g., liquid or gas flow, solute transport, cavity development) and subsurface properties (e.g., rock/soil density, conductivity) critical for successful control of environmental engineering related efforts such as environmental remediation, carbon sequestration, geothermal exploration, and mine land reclamation, among others. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gravity%20survey" title="gravity survey">gravity survey</a>, <a href="https://publications.waset.org/abstracts/search?q=high-performance%20computing" title=" high-performance computing"> high-performance computing</a>, <a href="https://publications.waset.org/abstracts/search?q=sub-surface%20monitoring" title=" sub-surface monitoring"> sub-surface monitoring</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20resistivity%20tomography" title=" electrical resistivity tomography"> electrical resistivity tomography</a> </p> <a href="https://publications.waset.org/abstracts/88259/e4d-mp-time-lapse-multiphysics-simulation-and-joint-inversion-toolset-for-large-scale-subsurface-imaging" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88259.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">157</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11</span> Removal of Heavy Metals from Municipal Wastewater Using Constructed Rhizofiltration System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christine%20A.%20Odinga">Christine A. Odinga</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Sanjay"> G. Sanjay</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Mathew"> M. Mathew</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Gupta"> S. Gupta</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20M.%20Swalaha"> F. M. Swalaha</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20A.%20O.%20Otieno"> F. A. O. Otieno</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Bux"> F. Bux</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wastewater discharged from municipal treatment plants contain an amalgamation of trace metals. The presence of metal pollutants in wastewater poses a huge challenge to the choice and applications of the preferred treatment method. Conventional treatment methods are inefficient in the removal of trace metals due to their design approach. This study evaluated the treatment performance of a constructed rhizofiltration system in the removal of heavy metals from municipal wastewater. The study was conducted at an eThekwni municipal wastewater treatment plant in Kingsburgh - Durban in the province of KwaZulu-Natal. The construction details of the pilot-scale rhizofiltration unit included three different layers of substrate consisting of medium stones, coarse gravel and fine sand. The system had one section planted with Phragmites australis L. and Kyllinga nemoralis L. while the other section was unplanted and acted as the control. Influent, effluent and sediment from the system were sampled and assessed for the presence of and removal of selected trace heavy metals using standard methods. Efficiency of metals removal was established by gauging the transfer of metals into leaves, roots and stem of the plants by calculations based on standard statistical packages. The Langmuir model was used to assess the heavy metal adsorption mechanisms of the plants. Heavy metals were accumulated in the entire rhizofiltration system at varying percentages of 96.69% on planted and 48.98% on control side for cadmium. Chromium was 81% and 24%, Copper was 23.4% and 1.1%, Nickel was 72% and 46.5, Lead was 63% and 31%, while Zinc was 76% and 84% on the on the water and sediment of the planted and control sides of the rhizofilter respectively. The decrease in metal adsorption efficiencies on the planted side followed the pattern of Cd>Cr>Zn>Ni>Pb>Cu and Ni>Cd>Pb>Cr>Cu>Zn on the control side. Confirmatory analysis using Electron Scanning Microscopy revealed that higher amounts of metals was deposited in the root system with values ranging from 0.015mg/kg (Cr), 0.250 (Cu), 0.030 (Pb) for P. australis, and 0.055mg/kg (Cr), 0.470mg/kg (Cu) and 0.210mg/kg,(Pb) for K. nemoralis respectively. The system was found to be efficient in removing and reducing metals from wastewater and further research is necessary to establish the immediate mechanisms that the plants display in order to achieve these reductions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wastewater%20treatment" title="wastewater treatment">wastewater treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=Phragmites%20australis%20L." title=" Phragmites australis L."> Phragmites australis L.</a>, <a href="https://publications.waset.org/abstracts/search?q=Kyllinga%20nemoralis%20L." title=" Kyllinga nemoralis L."> Kyllinga nemoralis L.</a>, <a href="https://publications.waset.org/abstracts/search?q=heavy%20metals" title=" heavy metals"> heavy metals</a>, <a href="https://publications.waset.org/abstracts/search?q=pathogens" title=" pathogens"> pathogens</a>, <a href="https://publications.waset.org/abstracts/search?q=rhizofiltration" title=" rhizofiltration"> rhizofiltration</a> </p> <a href="https://publications.waset.org/abstracts/46890/removal-of-heavy-metals-from-municipal-wastewater-using-constructed-rhizofiltration-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46890.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">264</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Fred%20A.%20O.%20Otieno&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Fred%20A.%20O.%20Otieno&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> 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