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Asrat</title> <meta name="description" content="Search results for: Zerihun Asrat"> <meta name="keywords" content="Zerihun Asrat"> <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 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Zerihun Asrat"> <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> 13</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Zerihun Asrat</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">13</span> Ecosystem Carbon Stocks Vary in Reference to the Models Used, Socioecological Factors and Agroforestry Practices in Central Ethiopia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gadisa%20Demie">Gadisa Demie</a>, <a href="https://publications.waset.org/abstracts/search?q=Mesele%20Negash"> Mesele Negash</a>, <a href="https://publications.waset.org/abstracts/search?q=Zerihun%20Asrat"> Zerihun Asrat</a>, <a href="https://publications.waset.org/abstracts/search?q=Lojka%20Bohdan"> Lojka Bohdan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Deforestation and forest degradation in the tropics have led to significant carbon (C) emissions. Agroforestry (AF) is a suitable land-use option for tackling such declines in ecosystem services, including climate change mitigation. However, it is unclear how biomass models, AF practices, and socio-ecological factors determine these roles, which hinders the implementation of climate change mitigation initiatives. This study aimed to estimate the ecosystem C stocks of the studied AF practices in relation to socio-ecological variables in central Ethiopia. Out of 243 AF farms inventoried, 108 were chosen at random from three AF practices to estimate their biomass and soil organic carbon. A total of 432 soil samples were collected from 0–30 and 30–60 cm soil depths; 216 samples were taken for each soil organic carbon fraction (%C) and bulk density computation. The study found that the currently developed allometric equations were the most accurate to estimate biomass C for trees growing in the landscape when compared to previous models. The study found higher overall biomass C in woodlots (165.62 Mg ha-¹) than in homegardens (134.07 Mg ha-¹) and parklands (19.98 Mg ha-¹). Conversely, overall, SOC was higher for homegardens (143.88 Mg ha-¹), but lower for parklands (53.42 Mg ha-¹). The ecosystem C stock was comparable between homegardens (277.95 Mg ha-¹) and woodlots (275.44 Mg ha-¹). The study found that elevation, wealthy levels, AF farm age, and size have a positive and significant (P < 0.05) effect on overall biomass and ecosystem C stocks but non-significant with slope (P > 0.05). Similarly, SOC increased with increasing elevation, AF farm age, and wealthy status but decreased with slope and non-significant with AF farm size. The study also showed that species diversity had a positive (P <0.05) effect on overall biomass C stocks in homegardens. The overall study highlights that AF practices have a great potential to lock up more carbon in biomass and soils; however, these potentials were determined by socioecological variables. Thus, these factors should be considered in management strategies that preserve trees in agricultural landscapes in order to mitigate climate change and support the livelihoods of farmers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=agricultural%20landscape" title="agricultural landscape">agricultural landscape</a>, <a href="https://publications.waset.org/abstracts/search?q=biomass" title=" biomass"> biomass</a>, <a href="https://publications.waset.org/abstracts/search?q=climate%20change" title=" climate change"> climate change</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20organic%20carbon" title=" soil organic carbon"> soil organic carbon</a> </p> <a href="https://publications.waset.org/abstracts/182337/ecosystem-carbon-stocks-vary-in-reference-to-the-models-used-socioecological-factors-and-agroforestry-practices-in-central-ethiopia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182337.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">50</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> Methanolic Extract of the Exudates of Aloe Otallensis and Its Effect on Leishmania Donovani Parasite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zerihun%20Tesfaye%20Nigusse">Zerihun Tesfaye Nigusse</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objective: This study evaluates the antileishmanial activity of the methanolic extract of Aloe otallensis (A. otallensis) on the promastigote stage of Leishmaniadonovani (L. donovani) as compared to standard drugs and to screen its phytochemical constituents. Methods: Phytochemical screening was done by using the method mentioned by Evans and Trease on methanolic extract of the exudates of Aloe otallensis leaves. The extract was also evaluated for in vitro antileishmanial activity against L. donavani, which is found in the Parasitology Unit of Black Lion Hospital. The result was compared to standard drugs of sodium stibogluconate, milfostin and paramomycin. Results: The extract has good antileishmanial activity with an IC50 of 0.123 0 μg/mL on L. donovani (AM 563). The experimental data showed that relatively, it had better activity than paramomycin and milfostin but less activity than sodium stibogluconate. The data analyses were done by GraphPad Prism version 5 software after it was read by an ELISA reader at the wavelength of 650 nm. The phytochemical screening of the exudates of A. otallensis showed the presence of phenol, alkaloid and saponin. Conclusions: The methanol extract of the exudates of A.otallensishas a good anti- leishmaniasis activity and this may be attributed to phenol, alkaloid and saponin present in the plant. But it needs further analysis for the conformation of which constituent presents in high concentration to know which one has the strongest effect. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anti%20leshimaniasis" title="anti leshimaniasis">anti leshimaniasis</a>, <a href="https://publications.waset.org/abstracts/search?q=aloe%20otallensis" title=" aloe otallensis"> aloe otallensis</a>, <a href="https://publications.waset.org/abstracts/search?q=leshimania%20ethiopica" title=" leshimania ethiopica"> leshimania ethiopica</a>, <a href="https://publications.waset.org/abstracts/search?q=IC50" title=" IC50"> IC50</a> </p> <a href="https://publications.waset.org/abstracts/188744/methanolic-extract-of-the-exudates-of-aloe-otallensis-and-its-effect-on-leishmania-donovani-parasite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188744.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">40</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> Examining Ethiopian Banking Industry in Relation to Factors Affecting Profitability: From 2008 to 2012</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zelalem%20Zerihun">Zelalem Zerihun</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, attempts were made to assess the bank-specific, industry-specific, and macro-economic factors affecting bank profitability. Data were collected from ten commercial banks in Ethiopia, covering the period of 2008-2012. A mixed method research approach was adopted for this research. Documentary analysis and in-depth interview were also used to substantiate the data. The study found out that capital strength, income diversification, bank size and gross domestic product are statistically significant and they have a positive relationship with banks’ profitability. However, operational efficiency and asset quality have a negative relationship with banks’ profitability. The relationship for liquidity risk, concentration and inflation were found to be statistically insignificant. The study revealed that focusing and reengineering the banks in light of the key internal drivers could enhance the profitability as well as the performance of the commercial banks in Ethiopia. In addition to this, the study suggests that banks in Ethiopia should not only be concerned about internal structures but also they must consider both the internal environment and the macro-economic environment in designing strategies to improve their profit or their performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ethiopian%20banking%20industry" title="Ethiopian banking industry">Ethiopian banking industry</a>, <a href="https://publications.waset.org/abstracts/search?q=macro-economic%20factors" title=" macro-economic factors"> macro-economic factors</a>, <a href="https://publications.waset.org/abstracts/search?q=documentary%20analysis" title=" documentary analysis"> documentary analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=capital%20strength" title=" capital strength"> capital strength</a>, <a href="https://publications.waset.org/abstracts/search?q=income%20diversification" title=" income diversification"> income diversification</a> </p> <a href="https://publications.waset.org/abstracts/48548/examining-ethiopian-banking-industry-in-relation-to-factors-affecting-profitability-from-2008-to-2012" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48548.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">341</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">10</span> Prevalence and Associated Factors of Attention Deficit Hyperactivity Disorder among Children Age 6 to 17 Years Old Living in Girja District, Oromia Regional State, Rural Ethiopia: Community Based Cross-Sectional Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hirbaye%20Mokona">Hirbaye Mokona</a>, <a href="https://publications.waset.org/abstracts/search?q=Abebaw%20Gebeyehu"> Abebaw Gebeyehu</a>, <a href="https://publications.waset.org/abstracts/search?q=Aemro%20Zerihun"> Aemro Zerihun</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Attention deficit hyperactivity disorder is serious public health problem affecting millions of children throughout the world. Method: A cross-sectional study conducted from May to June 2015 among children age 6 to 17 years living in rural area of Girja district. Multi-stage cluster sampling technique was used to select 1302 study participants. Disruptive Behavior Disorder rating scale was used to collect the data. Data were coded, entered and cleaned by Epi-Data version 3.1 and analyzed by SPSS version 20. Logistic regression analysis was used and Variables that have P-values less than 0.05 on multivariable logistic regression was considered as statistically significant. Results: Prevalence of Attention deficit hyperactivity disorder (ADHD) among children age 6 to 17 years was 7.3%. Being male [AOR=1.81, 95%CI: (1.13, 2.91)]; living with single parent [AOR=5.0, 95%CI: (2.35, 10.65)]; child birth order/rank [AOR=2.35, 95%CI: (1.30, 4.25)]; low family socio-economic status [AOR= 2.43, 95%CI: (1.29, 4.59)]; maternal alcohol/khat use during pregnancy [AOR=3.14, 95%CI: (1.37, 7.37)] and complication at delivery [AOR=3.56, 95%CI: (1.19, 10.64)] were more likely to develop Attention deficit hyperactivity disorder. Conclusion: In this study, the prevalence of Attention deficit hyperactivity disorder was similar with worldwide prevalence. Prevention and early management of its modifiable risk factors should be carryout alongside increasing community awareness. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=attention%20deficit%20hyperactivity%20disorder" title="attention deficit hyperactivity disorder">attention deficit hyperactivity disorder</a>, <a href="https://publications.waset.org/abstracts/search?q=ADHD" title=" ADHD"> ADHD</a>, <a href="https://publications.waset.org/abstracts/search?q=associated%20factors" title=" associated factors"> associated factors</a>, <a href="https://publications.waset.org/abstracts/search?q=children" title=" children"> children</a>, <a href="https://publications.waset.org/abstracts/search?q=prevalence" title=" prevalence"> prevalence</a> </p> <a href="https://publications.waset.org/abstracts/94747/prevalence-and-associated-factors-of-attention-deficit-hyperactivity-disorder-among-children-age-6-to-17-years-old-living-in-girja-district-oromia-regional-state-rural-ethiopia-community-based-cross-sectional-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/94747.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">186</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">9</span> Infusion Pump Historical Development, Measurement and Parts of Infusion Pump</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samuel%20Asrat">Samuel Asrat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Infusion pumps have become indispensable tools in modern healthcare, allowing for precise and controlled delivery of fluids, medications, and nutrients to patients. This paper provides an overview of the historical development, measurement, and parts of infusion pumps. The historical development of infusion pumps can be traced back to the early 1960s when the first rudimentary models were introduced. These early pumps were large, cumbersome, and often unreliable. However, advancements in technology and engineering over the years have led to the development of smaller, more accurate, and user-friendly infusion pumps. Measurement of infusion pumps involves assessing various parameters such as flow rate, volume delivered, and infusion duration. Flow rate, typically measured in milliliters per hour (mL/hr), is a critical parameter that determines the rate at which fluids or medications are delivered to the patient. Accurate measurement of flow rate is essential to ensure the proper administration of therapy and prevent adverse effects. Infusion pumps consist of several key parts, including the pump mechanism, fluid reservoir, tubing, and control interface. The pump mechanism is responsible for generating the necessary pressure to push fluids through the tubing and into the patient's bloodstream. The fluid reservoir holds the medication or solution to be infused, while the tubing serves as the conduit through which the fluid travels from the reservoir to the patient. The control interface allows healthcare providers to program and adjust the infusion parameters, such as flow rate and volume. In conclusion, infusion pumps have evolved significantly since their inception, offering healthcare providers unprecedented control and precision in delivering fluids and medications to patients. Understanding the historical development, measurement, and parts of infusion pumps is essential for ensuring their safe and effective use in clinical practice. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dip" title="dip">dip</a>, <a href="https://publications.waset.org/abstracts/search?q=ip" title=" ip"> ip</a>, <a href="https://publications.waset.org/abstracts/search?q=sp" title=" sp"> sp</a>, <a href="https://publications.waset.org/abstracts/search?q=is" title=" is"> is</a> </p> <a href="https://publications.waset.org/abstracts/183638/infusion-pump-historical-development-measurement-and-parts-of-infusion-pump" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/183638.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">67</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">8</span> Design and Development of Ssvep-Based Brain-Computer Interface for Limb Disabled Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zerihun%20Ketema%20Tadesse">Zerihun Ketema Tadesse</a>, <a href="https://publications.waset.org/abstracts/search?q=Dabbu%20Suman%20Reddy"> Dabbu Suman Reddy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Brain-Computer Interfaces (BCIs) give the possibility for disabled people to communicate and control devices. This work aims at developing steady-state visual evoked potential (SSVEP)-based BCI for patients with limb disabilities. In hospitals, devices like nurse emergency call devices, lights, and TV sets are what patients use most frequently, but these devices are operated manually or using the remote control. Thus, disabled patients are not able to operate these devices by themselves. Hence, SSVEP-based BCI system that can allow disabled patients to control nurse calling device and other devices is proposed in this work. Portable LED visual stimulator that flickers at specific frequencies of 7Hz, 8Hz, 9Hz and 10Hz were developed as part of this project. Disabled patients can stare at specific flickering LED of visual stimulator and Emotiv EPOC used to acquire EEG signal in a non-invasive way. The acquired EEG signal can be processed to generate various control signals depending upon the amplitude and duration of signal components. MATLAB software is used for signal processing and analysis and also for command generation. Arduino is used as a hardware interface device to receive and transmit command signals to the experimental setup. Therefore, this study is focused on the design and development of Steady-state visually evoked potential (SSVEP)-based BCI for limb disabled patients, which helps them to operate and control devices in the hospital room/wards. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=SSVEP-BCI" title="SSVEP-BCI">SSVEP-BCI</a>, <a href="https://publications.waset.org/abstracts/search?q=Limb%20Disabled%20Patients" title=" Limb Disabled Patients"> Limb Disabled Patients</a>, <a href="https://publications.waset.org/abstracts/search?q=LED%20Visual%20Stimulator" title=" LED Visual Stimulator"> LED Visual Stimulator</a>, <a href="https://publications.waset.org/abstracts/search?q=EEG%20signal" title=" EEG signal"> EEG signal</a>, <a href="https://publications.waset.org/abstracts/search?q=control%20devices" title=" control devices"> control devices</a>, <a href="https://publications.waset.org/abstracts/search?q=hospital%20room%2Fwards" title=" hospital room/wards"> hospital room/wards</a> </p> <a href="https://publications.waset.org/abstracts/140313/design-and-development-of-ssvep-based-brain-computer-interface-for-limb-disabled-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140313.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">221</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">7</span> Fecal Prevalence, Serotype Distribution and Antimicrobial Resistance of Salmonella in Dairy Cattle in Central Ethiopia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tadesse%20Eguale">Tadesse Eguale</a>, <a href="https://publications.waset.org/abstracts/search?q=Ephrem%20Engdawork"> Ephrem Engdawork</a>, <a href="https://publications.waset.org/abstracts/search?q=Wondwossen%20Gebreyes"> Wondwossen Gebreyes</a>, <a href="https://publications.waset.org/abstracts/search?q=Dainel%20%20Asrat"> Dainel Asrat</a>, <a href="https://publications.waset.org/abstracts/search?q=Hile%20Alemayehu"> Hile Alemayehu</a>, <a href="https://publications.waset.org/abstracts/search?q=John%20%20Gunn"> John Gunn </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Salmonella is one of the major zoonotic pathogens affecting wide range of vertebrates and humans worldwide. Consumption of contaminated dairy products and contact with dairy cattle represent the common sources of non-typhoidal Salmonella infection in humans. Fecal samples were collected from 132 dairy herds in central Ethiopia and cultured for Salmonella to determine the prevalence, serotype distribution and antimicrobial susceptibility. Salmonella was recovered from the feces of at least one cattle in 10(7.6%) of the dairy farms. Out of 1193 fecal samples 30(2.5%) were positive for Salmonella. Large farm size, detection of diarrhea in one or more animals during sampling and keeping animals completely indoor compared to occasional grazing outside were associated with Salmonella positivity of the farms. Farm level prevalence of Salmonella was significantly higher in young animals below 6 months of age compared to other age groups(X2=10.24; p=0.04). Nine different serotypes were isolated. The four most frequently recovered serotypes were S. Typhimurium (23.3%),S. Saintpaul (20%) and S. Kentucky and S. Virchow (16.7%) each. All isolates were resistant or intermediately resistant to at least one of the 18 drugs tested. Twenty-six (86.7%), 20(66.7%), 18(60%), 16(53.3%) of the isolates were resistant to streptomycin, nitrofurantoin, sulfisoxazole and tetracycline respectively. Resistance to 2 drugs was detected in 93.3% of the isolates. Resistance to 3 or more drugs were detected in 21(70%) of the total isolates while multi-drug resistance (MDR) to 7 or more drugs were detected in 12 (40%) of the isolates. The rate of occurrence of MDR in Salmonella strains isolated from dairy farms in Addis Ababa was significantly higher than those isolated from farms outside of Addis Ababa((p= 0.009). The detection of high MDR in Salmonella isolates originating from dairy farms warrants the need for strict pathogen reduction strategy in dairy cattle and spread of these MDR strains to human population. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=salmonella" title="salmonella">salmonella</a>, <a href="https://publications.waset.org/abstracts/search?q=antimicrobial%20resistance" title=" antimicrobial resistance"> antimicrobial resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=fecal%20prevalence" title=" fecal prevalence"> fecal prevalence</a> </p> <a href="https://publications.waset.org/abstracts/18194/fecal-prevalence-serotype-distribution-and-antimicrobial-resistance-of-salmonella-in-dairy-cattle-in-central-ethiopia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18194.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">497</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">6</span> The Impact of City Mobility on Propagation of Infectious Diseases: Mathematical Modelling Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Asrat%20M.Belachew">Asrat M.Belachew</a>, <a href="https://publications.waset.org/abstracts/search?q=Tiago%20Pereira"> Tiago Pereira</a>, <a href="https://publications.waset.org/abstracts/search?q=Institute%20of%20Mathematics"> Institute of Mathematics</a>, <a href="https://publications.waset.org/abstracts/search?q=Computer%20Sciences">Computer Sciences</a>, <a href="https://publications.waset.org/abstracts/search?q=Avenida%20Trabalhador%20S%C3%A3o%20Carlense"> Avenida Trabalhador São Carlense</a>, <a href="https://publications.waset.org/abstracts/search?q=400"> 400</a>, <a href="https://publications.waset.org/abstracts/search?q=S%C3%A3o%20Carlos"> São Carlos</a>, <a href="https://publications.waset.org/abstracts/search?q=13566-590"> 13566-590</a>, <a href="https://publications.waset.org/abstracts/search?q=Brazil"> Brazil</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Infectious diseases are among the most prominent threats to human beings. They cause morbidity and mortality to an individual and collapse the social, economic, and political systems of the whole world collectively. Mathematical models are fundamental tools and provide a comprehensive understanding of how infectious diseases spread and designing the control strategy to mitigate infectious diseases from the host population. Modeling the spread of infectious diseases using a compartmental model of inhomogeneous populations is good in terms of complexity. However, in the real world, there is a situation that accounts for heterogeneity, such as ages, locations, and contact patterns of the population which are ignored in a homogeneous setting. In this work, we study how classical an SEIR infectious disease spreading of the compartmental model can be extended by incorporating the mobility of population between heterogeneous cities during an outbreak of infectious disease. We have formulated an SEIR multi-cities epidemic spreading model using a system of 4k ordinary differential equations to describe the disease transmission dynamics in k-cities during the day and night. We have shownthat the model is epidemiologically (i.e., variables have biological interpretation) and mathematically (i.e., a unique bounded solution exists all the time) well-posed. We constructed the next-generation matrix (NGM) for the model and calculated the basic reproduction number R0for SEIR-epidemic spreading model with cities mobility. R0of the disease depends on the spectral radius mobility operator, and it is a threshold between asymptotic stability of the disease-free equilibrium and disease persistence. Using the eigenvalue perturbation theorem, we showed that sending a fraction of the population between cities decreases the reproduction number of diseases in interconnected cities. As a result, disease transmissiondecreases in the population. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=SEIR-model" title="SEIR-model">SEIR-model</a>, <a href="https://publications.waset.org/abstracts/search?q=mathematical%20model" title=" mathematical model"> mathematical model</a>, <a href="https://publications.waset.org/abstracts/search?q=city%20mobility" title=" city mobility"> city mobility</a>, <a href="https://publications.waset.org/abstracts/search?q=epidemic%20spreading" title=" epidemic spreading"> epidemic spreading</a> </p> <a href="https://publications.waset.org/abstracts/150894/the-impact-of-city-mobility-on-propagation-of-infectious-diseases-mathematical-modelling-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/150894.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">109</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">5</span> Climate Trends, Variability, and Impacts of El Niño-Southern Oscillation on Rainfall Amount in Ethiopia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zerihun%20Yohannes%20Amare">Zerihun Yohannes Amare</a>, <a href="https://publications.waset.org/abstracts/search?q=Belayneh%20Birku%20Geremew"> Belayneh Birku Geremew</a>, <a href="https://publications.waset.org/abstracts/search?q=Nigatu%20Melise%20Kebede"> Nigatu Melise Kebede</a>, <a href="https://publications.waset.org/abstracts/search?q=Sisaynew%20Getahun%20Amera"> Sisaynew Getahun Amera</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In Ethiopia, agricultural production is predominantly rainfed. The El Niño Southern Oscillation (ENSO) is the driver of climate variability, which affects the agricultural production system in the country. This paper aims to study trends, variability of rainfall, and impacts of El Niño Southern Oscillation (ENSO) on rainfall amount. The study was carried out in Ethiopia's Western Amhara National Regional State, which features a variety of seasons that characterize the nation. Monthly rainfall data were collected from fifteen meteorological stations of Western Amhara. Selected El Niño and La Niña years were also extracted from National Oceanic and Atmospheric Administration (NOAA) from 1986 to 2015. Once the data quality was checked and inspected, the monthly rainfall data of the selected stations were arranged in Microsoft Excel Spreadsheet and analyzed using XLSTAT software. The coefficient of variation and the Mann-Kendall non-parametric statistical test was employed to analyze trends and variability of rainfall and temperature. The long-term recorded annual rainfall data indicated that there was an increasing trend from 1986 to 2015 insignificantly. The rainfall variability was less (Coefficient of Variation, CV = 8.6%); also, the mean monthly rainfall of Western Amhara decreased during El Niño years and increased during La Niña years, especially in the rainy season (JJAS) over 30 years. This finding will be useful to suggest possible adaptation strategies and efficient use of resources during planning and implementation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rainfall" title="rainfall">rainfall</a>, <a href="https://publications.waset.org/abstracts/search?q=Mann-Kendall%20test" title=" Mann-Kendall test"> Mann-Kendall test</a>, <a href="https://publications.waset.org/abstracts/search?q=El%20Ni%C3%B1o" title=" El Niño"> El Niño</a>, <a href="https://publications.waset.org/abstracts/search?q=La%20Ni%C3%B1a" title=" La Niña"> La Niña</a>, <a href="https://publications.waset.org/abstracts/search?q=Western%20Amhara" title=" Western Amhara"> Western Amhara</a>, <a href="https://publications.waset.org/abstracts/search?q=Ethiopia" title=" Ethiopia"> Ethiopia</a> </p> <a href="https://publications.waset.org/abstracts/170694/climate-trends-variability-and-impacts-of-el-nino-southern-oscillation-on-rainfall-amount-in-ethiopia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/170694.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">98</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">4</span> Gender-Specific Vulnerability on Climate Change and Food Security Status - A Catchment Approach on Agroforestry Systems - A Multi-Country Case Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zerihun%20Yohannes%20Amare%20Id">Zerihun Yohannes Amare Id</a>, <a href="https://publications.waset.org/abstracts/search?q=Bernhard%20Freyer"> Bernhard Freyer</a>, <a href="https://publications.waset.org/abstracts/search?q=Ky%20Serge%20Stephane"> Ky Serge Stephane</a>, <a href="https://publications.waset.org/abstracts/search?q=Ou%C3%A9da%20Adama"> Ouéda Adama</a>, <a href="https://publications.waset.org/abstracts/search?q=Blessing%20Mudombi"> Blessing Mudombi</a>, <a href="https://publications.waset.org/abstracts/search?q=Jean%20Nzuma"> Jean Nzuma</a>, <a href="https://publications.waset.org/abstracts/search?q=Mekonen%20Getachew%20Abebe"> Mekonen Getachew Abebe</a>, <a href="https://publications.waset.org/abstracts/search?q=Adane%20Tesfaye"> Adane Tesfaye</a>, <a href="https://publications.waset.org/abstracts/search?q=Birtukan%20Atinkut%20Asmare"> Birtukan Atinkut Asmare</a>, <a href="https://publications.waset.org/abstracts/search?q=Tesfahun%20Asmamaw%20Kassie"> Tesfahun Asmamaw Kassie</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study was conducted in Ethiopia (Zege Catchment) (ZC), Zimbabwe (Upper Save Catchment) (USC), and Burkina Faso (Nakambe Catchment) (NC). The study utilized a quantitative approach with 180 participants and complemented it with qualitative methods, including 33 key informant interviews and 6 focus group discussions. Households in ZC (58%), NC (55%), and US (40%) do not cover their household food consumption from crop production. The households rely heavily on perennial cash crops rather than annual crop production. Exposure indicators in ZC (0.758), USC (0.774), and NC (0.944), and sensitivity indicators in ZC (0.849) and NC (0.937) show statistically significant and high correlation with vulnerability. In the USC, adaptive capacity (0.746) and exposure (0.774) are also statistically significant and highly correlated with vulnerability. Vulnerability levels of the NC are very high (0.75) (0.85 female and 0.65 male participants) compared to the USC (0.66) (0.69 female and 0.61 male participants) and ZC (0.47) (0.34 female and 0.58 male participants). Female-headed households had statistically significantly lower vulnerability index compared to males in ZC, while male-headed households had statistically significantly lower vulnerability index compared to females in USC and NC. The reason is land certification in ZC (80%) is higher than in the US (10%) and NC (8%). Agroforestry practices variables across the study catchments had statistically significant contributions to households' adaptive capacity. We conclude that agroforestry practices do have substantial benefits in increasing women's adaptive capacity and reducing their vulnerability to climate change and food insecurity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=climate%20change%20vulnerability" title="climate change vulnerability">climate change vulnerability</a>, <a href="https://publications.waset.org/abstracts/search?q=agroforestry" title=" agroforestry"> agroforestry</a>, <a href="https://publications.waset.org/abstracts/search?q=gender" title=" gender"> gender</a>, <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=Sub-Saharan%20Africa" title=" Sub-Saharan Africa"> Sub-Saharan Africa</a> </p> <a href="https://publications.waset.org/abstracts/170698/gender-specific-vulnerability-on-climate-change-and-food-security-status-a-catchment-approach-on-agroforestry-systems-a-multi-country-case-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/170698.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">97</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">3</span> Variation in Maternal Mortality in Sidama National Regional State, Southern Ethiopia: A Population Based Cross Sectional Household Survey</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aschenaki%20Zerihun%20Kea">Aschenaki Zerihun Kea</a>, <a href="https://publications.waset.org/abstracts/search?q=Bernt%20Lindtjorn"> Bernt Lindtjorn</a>, <a href="https://publications.waset.org/abstracts/search?q=Achamyelesh%20Gebretsadik"> Achamyelesh Gebretsadik</a>, <a href="https://publications.waset.org/abstracts/search?q=Sven%20Gudmund%20Hinderaker"> Sven Gudmund Hinderaker</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Maternal mortality studies conducted at the national level do not provide the information needed for planning and monitoring health programs at lower administrative levels. The aim of this study was to measure maternal mortality, identify risk factors and district-level variations in Sidama National Regional State, southern Ethiopia. Methods: A cross sectional population-based survey was carried out in households where women reported pregnancy and birth outcomes in the past five years. The study was conducted in the Sidama National Regional State, southern Ethiopia, from July 2019 to May 2020. Multi-stage cluster sampling technique was employed. The outcome variable of the study was maternal mortality. Complex sample logistic regression analysis was applied to assess variables independently associated with maternal mortality. Results: We registered 10602 live births (LB) and 48 maternal deaths, yielding an overall maternal mortality ratio (MMR) of 419; 95% CI: 260-577 per 100,000 LB. Aroresa district had the highest MMR with 1142 (95% CI: 693-1591) per 100,000 LB. Leading causes of death were haemorrhage 21 (41%) and eclampsia 10 (27%). Thirty (59%) mothers died during labour, or within 24 hours after delivery, 25 (47%) died at home and 17 (38%) at a health facility. Mothers who did not have formal education had a higher risk of maternal death (AOR: 4.4; 95% CI: 1.7 – 11.0). The risk of maternal death was higher in districts with a low midwife-to-population ratio (AOR: 2.9; 95% CI: 1.0-8.9). Conclusion: The high maternal mortality with district-level variations in Sidama Region highlights the importance of improving obstetric care and employing targeted interventions in areas with high mortality rates. Due attention should be given to improving access to female education. Additional midwives have to be trained and deployed to improve maternal health services and consequently save the lives of mothers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=maternal%20mortality%20variation" title="maternal mortality variation">maternal mortality variation</a>, <a href="https://publications.waset.org/abstracts/search?q=maternal%20death" title=" maternal death"> maternal death</a>, <a href="https://publications.waset.org/abstracts/search?q=Sidama" title=" Sidama"> Sidama</a>, <a href="https://publications.waset.org/abstracts/search?q=Ethiopia" title=" Ethiopia"> Ethiopia</a> </p> <a href="https://publications.waset.org/abstracts/161980/variation-in-maternal-mortality-in-sidama-national-regional-state-southern-ethiopia-a-population-based-cross-sectional-household-survey" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161980.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">72</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">2</span> Six Years Antimicrobial Resistance Trends among Bacterial Isolates in Amhara National Regional State, Ethiopia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Asrat%20Agalu%20Abejew">Asrat Agalu Abejew</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Antimicrobial resistance (AMR) is a silent tsunami and one of the top global threats to health care and public health. It is one of the common agendas globally and in Ethiopia. Emerging AMR will be a double burden to Ethiopia, which is facing a series of problems from infectious disease morbidity and mortality. In Ethiopia, although there are attempts to document AMR in healthcare institutions, comprehensive and all-inclusive analysis is still lacking. Thus, this study is aimed to determine trends in AMR from 2016-2021. Methods: A retrospective analysis of secondary data recorded in the Amhara Public Health Institute (APHI) from 2016 to 2021 G.C was conducted. Blood, Urine, Stool, Swabs, Discharge, body effusions, and other Microbiological specimens were collected from each study participants, and Bacteria identification and Resistance tests were done using the standard microbiologic procedure. Data was extracted from excel in August 2022, Trends in AMR were analyzed, and the results were described. In addition, the chi-square (X2) test and binary logistic regression were used, and a P. value < 0.05 was used to determine a significant association. Results: During 6 years period, there were 25143 culture and susceptibility tests. Overall, 265 (46.2%) bacteria were resistant to 2-4 antibiotics, 253 (44.2%) to 5-7 antibiotics, and 56 (9.7%) to >=8 antibiotics. The gram-negative bacteria were 166 (43.9%), 155 (41.5%), and 55 (14.6%) resistant to 2-4, 5-7, and ≥8 antibiotics, respectively, whereas 99(50.8%), 96(49.2% and 1 (0.5%) of gram-positive bacteria were resistant to 2-4, 5-7 and ≥8 antibiotics respectively. K. pneumonia 3783 (15.67%) and E. coli 3199 (13.25%) were the most commonly isolated bacteria, and the overall prevalence of AMR was 2605 (59.9%), where K. pneumonia 743 (80.24%), E. cloacae 196 (74.81%), A. baumannii 213 (66.56%) being the most common resistant bacteria for antibiotics tested. Except for a slight decline during 2020 (6469 (25.4%)), the overall trend of AMR is rising from year to year, with a peak in 2019 (8480 (33.7%)) and in 2021 (7508 (29.9%). If left un-intervened, the trend in AMR will increase by 78% of variation from the study period, as explained by the differences in years (R2=0.7799). Ampicillin, Augmentin, ciprofloxacin, cotrimoxazole, tetracycline, and Tobramycin were almost resistant to common bacteria they were tested. Conclusion: AMR is linearly increasing during the last 6 years. If left as it is without appropriate intervention after 15 years (2030 E.C), AMR will increase by 338.7%. A growing number of multi-drug resistant bacteria is an alarm to awake policymakers and those who do have the concern to intervene before it is too late. This calls for a periodic, integrated, and continuous system to determine the prevalence of AMR in commonly used antibiotics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AMR" title="AMR">AMR</a>, <a href="https://publications.waset.org/abstracts/search?q=trend" title=" trend"> trend</a>, <a href="https://publications.waset.org/abstracts/search?q=pattern" title=" pattern"> pattern</a>, <a href="https://publications.waset.org/abstracts/search?q=MDR" title=" MDR"> MDR</a> </p> <a href="https://publications.waset.org/abstracts/159598/six-years-antimicrobial-resistance-trends-among-bacterial-isolates-in-amhara-national-regional-state-ethiopia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/159598.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">76</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">1</span> Modeling and Implementation of a Hierarchical Safety Controller for Human Machine Collaboration </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Damtew%20Samson%20Zerihun">Damtew Samson Zerihun</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper primarily describes the concept of a hierarchical safety control (HSC) in discrete manufacturing to up-hold productivity with human intervention and machine failures using a systematic approach, through increasing the system availability and using additional knowledge on machines so as to improve the human machine collaboration (HMC). It also highlights the implemented PLC safety algorithm, in applying this generic concept to a concrete pro-duction line using a lab demonstrator called FATIE (Factory Automation Test and Integration Environment). Furthermore, the paper describes a model and provide a systematic representation of human-machine collabora-tion in discrete manufacturing and to this end, the Hierarchical Safety Control concept is proposed. This offers a ge-neric description of human-machine collaboration based on Finite State Machines (FSM) that can be applied to vari-ous discrete manufacturing lines instead of using ad-hoc solutions for each line. With its reusability, flexibility, and extendibility, the Hierarchical Safety Control scheme allows upholding productivity while maintaining safety with reduced engineering effort compared to existing solutions. The approach to the solution begins with a successful partitioning of different zones around the Integrated Manufacturing System (IMS), which are defined by operator tasks and the risk assessment, used to describe the location of the human operator and thus to identify the related po-tential hazards and trigger the corresponding safety functions to mitigate it. This includes selective reduced speed zones and stop zones, and in addition with the hierarchical safety control scheme and advanced safety functions such as safe standstill and safe reduced speed are used to achieve the main goals in improving the safe Human Ma-chine Collaboration and increasing the productivity. In a sample scenarios, It is shown that an increase of productivity in the order of 2.5% is already possible with a hi-erarchical safety control, which consequently under a given assumptions, a total sum of 213 € could be saved for each intervention, compared to a protective stop reaction. Thereby the loss is reduced by 22.8%, if occasional haz-ard can be refined in a hierarchical way. Furthermore, production downtime due to temporary unavailability of safety devices can be avoided with safety failover that can save millions per year. Moreover, the paper highlights the proof of the development, implementation and application of the concept on the lab demonstrator (FATIE), where it is realized on the new safety PLCs, Drive Units, HMI as well as Safety devices in addition to the main components of the IMS. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=discrete%20automation" title="discrete automation">discrete automation</a>, <a href="https://publications.waset.org/abstracts/search?q=hierarchical%20safety%20controller" title=" hierarchical safety controller"> hierarchical safety controller</a>, <a href="https://publications.waset.org/abstracts/search?q=human%20machine%20collaboration" title=" human machine collaboration"> human machine collaboration</a>, <a href="https://publications.waset.org/abstracts/search?q=programmable%20logical%20controller" title=" programmable logical controller"> programmable logical controller</a> </p> <a 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