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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> 17</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Gidey Yirga</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17</span> Medicinal and Edible Plants in the Highlands of Tigray, Ethiopia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Masho%20Mebrahtom%20Gebrehiwot">Masho Mebrahtom Gebrehiwot</a>, <a href="https://publications.waset.org/abstracts/search?q=Gidey%20Yirga"> Gidey Yirga</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Tigray highlands in northern Ethiopia, is characterized by a wide range of ecological conditions and climate. The siege of Tigray is believed to cause the deaths of nearly 600,000 civilians mainly due to starvation and lack of medicine. In this study, the most important edible and medicinal plants used during the siege of Tigray were investigated. Semi-structured interviews, observation and guided field walks were used in 500 informants (300 males and 200 females) selected randomly from two districts. A total of 25 species of medicinal plants were collected and identified for treating 30 human ailments. Furthermore, a total of 21 edible plants were also collected and identified. Nearly 68.75% of these species were wild and harvested mainly for their leaves and the remedies were administered through dermal, nasal and oral routes. Oral and dermal applications were the highest and most used route of application. Famen foods significantly saved thousands of human lives during the siege of Tigray both in urban and rural communities. We suggest domestication of some of the wild medicinal plants for long term conservation of the species. Documentation of farmers’ knowledge, attitude and practices of ethnobotany would be very important before the indigenous knowledge is lost forever. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ethnobotany" title="ethnobotany">ethnobotany</a>, <a href="https://publications.waset.org/abstracts/search?q=tigray" title=" tigray"> tigray</a>, <a href="https://publications.waset.org/abstracts/search?q=siege" title=" siege"> siege</a>, <a href="https://publications.waset.org/abstracts/search?q=application" title=" application"> application</a> </p> <a href="https://publications.waset.org/abstracts/193294/medicinal-and-edible-plants-in-the-highlands-of-tigray-ethiopia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/193294.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">28</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> A DEA Model in a Multi-Objective Optimization with Fuzzy Environment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Michael%20Gidey%20Gebru">Michael Gidey Gebru</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Most DEA models operate in a static environment with input and output parameters that are chosen by deterministic data. However, due to ambiguity brought on shifting market conditions, input and output data are not always precisely gathered in real-world scenarios. Fuzzy numbers can be used to address this kind of ambiguity in input and output data. Therefore, this work aims to expand crisp DEA into DEA with fuzzy environment. In this study, the input and output data are regarded as fuzzy triangular numbers. Then, the DEA model with fuzzy environment is solved using a multi-objective method to gauge the Decision Making Units’ efficiency. Finally, the developed DEA model is illustrated with an application on real data 50 educational institutions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=efficiency" title="efficiency">efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=DEA" title=" DEA"> DEA</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy" title=" fuzzy"> fuzzy</a>, <a href="https://publications.waset.org/abstracts/search?q=decision%20making%20units" title=" decision making units"> decision making units</a>, <a href="https://publications.waset.org/abstracts/search?q=higher%20education%20institutions" title=" higher education institutions"> higher education institutions</a> </p> <a href="https://publications.waset.org/abstracts/185155/a-dea-model-in-a-multi-objective-optimization-with-fuzzy-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185155.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">59</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> Heat and Mass Transfer in MHD Flow of Nanofluids through a Porous Media Due to a Permeable Stretching Sheet with Viscous Dissipation and Chemical Reaction Effects</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yohannes%20Yirga">Yohannes Yirga</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Tesfay"> Daniel Tesfay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The convective heat and mass transfer in nanofluid flow through a porous media due to a permeable stretching sheet with magnetic field, viscous dissipation, and chemical reaction and Soret effects are numerically investigated. Two types of nanofluids, namely Cu-water and Ag-water were studied. The governing boundary layer equations are formulated and reduced to a set of ordinary differential equations using similarity transformations and then solved numerically using the Keller box method. Numerical results are obtained for the skin friction coefficient, Nusselt number and Sherwood number as well as for the velocity, temperature and concentration profiles for selected values of the governing parameters. Excellent validation of the present numerical results has been achieved with the earlier linearly stretching sheet problems in the literature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heat%20and%20mass%20transfer" title="heat and mass transfer">heat and mass transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetohydrodynamics" title=" magnetohydrodynamics"> magnetohydrodynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=nanofluid" title=" nanofluid"> nanofluid</a>, <a href="https://publications.waset.org/abstracts/search?q=fluid%20dynamics" title=" fluid dynamics"> fluid dynamics</a> </p> <a href="https://publications.waset.org/abstracts/4910/heat-and-mass-transfer-in-mhd-flow-of-nanofluids-through-a-porous-media-due-to-a-permeable-stretching-sheet-with-viscous-dissipation-and-chemical-reaction-effects" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4910.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">295</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> A Data Envelopment Analysis Model in a Multi-Objective Optimization with Fuzzy Environment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Michael%20Gidey%20Gebru">Michael Gidey Gebru</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Most of Data Envelopment Analysis models operate in a static environment with input and output parameters that are chosen by deterministic data. However, due to ambiguity brought on shifting market conditions, input and output data are not always precisely gathered in real-world scenarios. Fuzzy numbers can be used to address this kind of ambiguity in input and output data. Therefore, this work aims to expand crisp Data Envelopment Analysis into Data Envelopment Analysis with fuzzy environment. In this study, the input and output data are regarded as fuzzy triangular numbers. Then, the Data Envelopment Analysis model with fuzzy environment is solved using a multi-objective method to gauge the Decision Making Units' efficiency. Finally, the developed Data Envelopment Analysis model is illustrated with an application on real data 50 educational institutions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=efficiency" title="efficiency">efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=Data%20Envelopment%20Analysis" title=" Data Envelopment Analysis"> Data Envelopment Analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy" title=" fuzzy"> fuzzy</a>, <a href="https://publications.waset.org/abstracts/search?q=higher%20education" title=" higher education"> higher education</a>, <a href="https://publications.waset.org/abstracts/search?q=input" title=" input"> input</a>, <a href="https://publications.waset.org/abstracts/search?q=output" title=" output"> output</a> </p> <a href="https://publications.waset.org/abstracts/185408/a-data-envelopment-analysis-model-in-a-multi-objective-optimization-with-fuzzy-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185408.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">69</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> Unsteady Heat and Mass Transfer in MHD Flow of Nanofluids over Stretching Sheet with a Non Uniform Heat Source/Sink</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bandari%20Shankar">Bandari Shankar</a>, <a href="https://publications.waset.org/abstracts/search?q=Yohannes%20Yirga"> Yohannes Yirga</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the problem of heat and mass transfer in unsteady MHD boundary-layer flow of nanofluids over stretching sheet with a non uniform heat source/sink is considered. The unsteadiness in the flow and temperature is caused by the time-dependent stretching velocity and surface temperature. The unsteady boundary layer equations are transformed to a system of non-linear ordinary differential equations and solved numerically using Keller box method. The velocity, temperature, and concentration profiles were obtained and utilized to compute the skin-friction coefficient, local Nusselt number, and local Sherwood number for different values of the governing parameters viz. solid volume fraction parameter, unsteadiness parameter, magnetic field parameter, Schmidt number, space-dependent and temperature-dependent parameters for heat source/sink. A comparison of the numerical results of the present study with previously published data revealed an excellent agreement <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=unsteady" title="unsteady">unsteady</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20and%20mass%20transfer" title=" heat and mass transfer"> heat and mass transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=manetohydrodynamics" title=" manetohydrodynamics"> manetohydrodynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=nanofluid" title=" nanofluid"> nanofluid</a>, <a href="https://publications.waset.org/abstracts/search?q=non-uniform%20heat%20source%2Fsink" title=" non-uniform heat source/sink"> non-uniform heat source/sink</a>, <a href="https://publications.waset.org/abstracts/search?q=stretching%20sheet" title=" stretching sheet"> stretching sheet</a> </p> <a href="https://publications.waset.org/abstracts/3374/unsteady-heat-and-mass-transfer-in-mhd-flow-of-nanofluids-over-stretching-sheet-with-a-non-uniform-heat-sourcesink" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3374.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">278</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> Attention-Based ResNet for Breast Cancer Classification</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abebe%20Mulugojam%20Negash">Abebe Mulugojam Negash</a>, <a href="https://publications.waset.org/abstracts/search?q=Yongbin%20Yu"> Yongbin Yu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ekong%20Favour"> Ekong Favour</a>, <a href="https://publications.waset.org/abstracts/search?q=Bekalu%20Nigus%20Dawit"> Bekalu Nigus Dawit</a>, <a href="https://publications.waset.org/abstracts/search?q=Molla%20Woretaw%20Teshome"> Molla Woretaw Teshome</a>, <a href="https://publications.waset.org/abstracts/search?q=Aynalem%20Birtukan%20Yirga"> Aynalem Birtukan Yirga</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Breast cancer remains a significant health concern, necessitating advancements in diagnostic methodologies. Addressing this, our paper confronts the notable challenges in breast cancer classification, particularly the imbalance in datasets and the constraints in the accuracy and interpretability of prevailing deep learning approaches. We proposed an attention-based residual neural network (ResNet), which effectively combines the robust features of ResNet with an advanced attention mechanism. Enhanced through strategic data augmentation and positive weight adjustments, this approach specifically targets the issue of data imbalance. The proposed model is tested on the BreakHis dataset and achieved accuracies of 99.00%, 99.04%, 98.67%, and 98.08% in different magnifications (40X, 100X, 200X, and 400X), respectively. We evaluated the performance by using different evaluation metrics such as precision, recall, and F1-Score and made comparisons with other state-of-the-art methods. Our experiments demonstrate that the proposed model outperforms existing approaches, achieving higher accuracy in breast cancer classification. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=residual%20neural%20network" title="residual neural network">residual neural network</a>, <a href="https://publications.waset.org/abstracts/search?q=attention%20mechanism" title=" attention mechanism"> attention mechanism</a>, <a href="https://publications.waset.org/abstracts/search?q=positive%20weight" title=" positive weight"> positive weight</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20augmentation" title=" data augmentation"> data augmentation</a> </p> <a href="https://publications.waset.org/abstracts/181531/attention-based-resnet-for-breast-cancer-classification" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/181531.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">113</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> Impact of Mass Rape on HIV Incidence and Prevalence in Conflict Situations: Mathematical Analysis of the War in Tigray, Ethiopia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelkadir%20Muzey%20Mohammed">Abdelkadir Muzey Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Habtu%20Alemayehu%20Atsbaha"> Habtu Alemayehu Atsbaha</a>, <a href="https://publications.waset.org/abstracts/search?q=Yohannes%20Yirga%20Kefela"> Yohannes Yirga Kefela</a>, <a href="https://publications.waset.org/abstracts/search?q=Woldegebriel%20Assefa%20Woldegerima"> Woldegebriel Assefa Woldegerima</a>, <a href="https://publications.waset.org/abstracts/search?q=Kiros%20Tedla%20Gebrehiwot"> Kiros Tedla Gebrehiwot</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The circumstances of war and conflict have long been associated with concerns about heightening HIV infection due to the use of sexual violence and rape as a weapon of war and lack of health services access to the patients with HIV as well as sexual violence and rape victims. This paper examines the impact of war related mass rape on HIV incidence and prevalence in the war ravaged Tigray, Ethiopia. Risk equation model and uncertainty analyses with sampled ranges of parameters were employed using data from WHO, Ethiopian Public Health Institute and Ethiopian Central Statistical Agency was used. Our analysis indicated that the mass rape committed in Tigray could cause an increase of incidence and prevalence by a median of 63.01% and 1.14% respectively. The significant increase in HIV incidence and prevalence due to mass rape demands a special attention including region wide improved surveillance and tracing of rape survivors. Furthermore, HIV prevention and treatment strategies such as delivery of emergency health service, providing pre and post exposure treatments on the basis of human rights should priority of governmental and nongovernmental organizations in a conflict situation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=conflict%20situation" title="conflict situation">conflict situation</a>, <a href="https://publications.waset.org/abstracts/search?q=mass%20rape" title=" mass rape"> mass rape</a>, <a href="https://publications.waset.org/abstracts/search?q=HIV" title=" HIV"> HIV</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=uncertainty%20analysis" title=" uncertainty analysis"> uncertainty analysis</a> </p> <a href="https://publications.waset.org/abstracts/194154/impact-of-mass-rape-on-hiv-incidence-and-prevalence-in-conflict-situations-mathematical-analysis-of-the-war-in-tigray-ethiopia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/194154.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">29</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> Coexistence of Superconductivity and Spin Density Wave in Ferropnictide Ba₁₋ₓKₓFe₂As₂</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tadesse%20Desta%20Gidey">Tadesse Desta Gidey</a>, <a href="https://publications.waset.org/abstracts/search?q=Gebregziabher%20Kahsay"> Gebregziabher Kahsay</a>, <a href="https://publications.waset.org/abstracts/search?q=Pooran%20Singh"> Pooran Singh </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work focuses on the theoretical investigation of the coexistence of superconductivity and Spin Density Wave (SDW)in Ferropnictide Ba₁₋ₓKₓFe₂As₂. By developing a model Hamiltonian for the system and by using quantum field theory Green’s function formalism, we have obtained mathematical expressions for superconducting transition temperature TC), spin density wave transition temperature (Tsdw), superconductivity order parameter (Sc), and spin density wave order parameter (sdw). By employing the experimental and theoretical values of the parameters in the obtained expressions, phase diagrams of superconducting transition temperature (TC) versus superconducting order parameter (Sc) and spin density wave transition temperature (Tsdw), versus spin density wave order parameter (sdw) have been plotted. By combining the two phase diagrams, we have demonstrated the possible coexistence of superconductivity and spin density wave (SDW) in ferropnictide Ba1−xKxFe2As2. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Superconductivity" title="Superconductivity">Superconductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=Spin%20density%20wave" title=" Spin density wave"> Spin density wave</a>, <a href="https://publications.waset.org/abstracts/search?q=Coexistence" title=" Coexistence"> Coexistence</a>, <a href="https://publications.waset.org/abstracts/search?q=Green%20function" title=" Green function"> Green function</a>, <a href="https://publications.waset.org/abstracts/search?q=Pnictides" title=" Pnictides"> Pnictides</a>, <a href="https://publications.waset.org/abstracts/search?q=Ba%E2%82%81%E2%82%8B%E2%82%93K%E2%82%93Fe%E2%82%82As%E2%82%82" title=" Ba₁₋ₓKₓFe₂As₂"> Ba₁₋ₓKₓFe₂As₂</a> </p> <a href="https://publications.waset.org/abstracts/119138/coexistence-of-superconductivity-and-spin-density-wave-in-ferropnictide-ba1kfe2as2" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/119138.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">187</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> Concurrent Engineering Challenges and Resolution Mechanisms from Quality Perspectives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Grmanesh%20Gidey%20Kahsay">Grmanesh Gidey Kahsay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In modern technical engineering applications, quality is defined in two ways. The first one is that quality is the parameter that measures a product or service’s characteristics to meet and satisfy the pre-stated or fundamental needs (reliability, durability, serviceability). The second one is the quality of a product or service free of any defect or deficiencies. The American Society for Quality (ASQ) describes quality as a pursuit of optimal solutions to confirm successes and fulfillment to be accountable for the product or service's requirements and expectations. This article focuses on quality engineering tools in modern industrial applications. Quality engineering is a field of engineering that deals with the principles, techniques, models, and applications of the product or service to guarantee quality. Including the entire activities to analyze the product’s design and development, quality engineering emphasizes how to make sure that products and services are designed and developed to meet consumers’ requirements. This episode acquaints with quality tools such as quality systems, auditing, product design, and process control. The finding presents thoughts that aim to improve quality engineering proficiency and effectiveness by introducing essential quality techniques and tools in some selected industries. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=essential%20quality%20tools" title="essential quality tools">essential quality tools</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20systems%20and%20models" title=" quality systems and models"> quality systems and models</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20management%20systems" title=" quality management systems"> quality management systems</a>, <a href="https://publications.waset.org/abstracts/search?q=and%20quality%20assurance" title=" and quality assurance"> and quality assurance</a> </p> <a href="https://publications.waset.org/abstracts/136437/concurrent-engineering-challenges-and-resolution-mechanisms-from-quality-perspectives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/136437.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">162</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> Public Transport Assignment at Adama City</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Selamawit%20Mulubrhan%20Gidey">Selamawit Mulubrhan Gidey</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Adama city, having an area of 29.86 km2, is one of the main cities in Ethiopia experiencing rapid growth in business and construction activities which in turn with an increasing number of vehicles at an alarming rate. For this reason, currently, there is an attempt to develop public transport assignment modeling in the city. Still, there is a huge gap in developing public transport assignments along the road segments of the city with operational and safety performance due to high traffic volume. Thus, the introduction of public transport assignment modeling in Adama City can have a massive impact on the road safety and capacity problem in the city. City transport modeling is important in city transportation planning, particularly in overcoming existing transportation problems such as traffic congestion. In this study, the Adama City transportation model was developed using the PTV VISUM software, whose transportation modeling is based on the four-step model of transportation. Based on the traffic volume data fed and simulated, the result of the study shows that the developed model has better reliability in representing the traffic congestion conditions in Adama city, and the simulation clearly indicates the level of congestion of each route selected and thus, the city road administrative office can take managerial decisions on public transport assignment so as to overcome traffic congestion executed along the selected routes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=trip%20modelling" title="trip modelling">trip modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=PTV%20VISUM" title=" PTV VISUM"> PTV VISUM</a>, <a href="https://publications.waset.org/abstracts/search?q=public%20transport%20assignment" title=" public transport assignment"> public transport assignment</a>, <a href="https://publications.waset.org/abstracts/search?q=congestion" title=" congestion"> congestion</a> </p> <a href="https://publications.waset.org/abstracts/187078/public-transport-assignment-at-adama-city" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/187078.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">7</span> Enhanced Nanocatalytic Congo-Red Dye Removal using Boron-loaded Cobalt Oxide Nanocomposites from Aqueous Solutions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adugna%20Nigatu%20Alene">Adugna Nigatu Alene</a>, <a href="https://publications.waset.org/abstracts/search?q=Alebel%20Abebaw%20Teshager"> Alebel Abebaw Teshager</a>, <a href="https://publications.waset.org/abstracts/search?q=Adissu%20Getahun%20Adugna"> Adissu Getahun Adugna</a>, <a href="https://publications.waset.org/abstracts/search?q=Tadele%20Mihret%20Kndie"> Tadele Mihret Kndie</a>, <a href="https://publications.waset.org/abstracts/search?q=Mulugeta%20kasaw%20Feleke"> Mulugeta kasaw Feleke</a>, <a href="https://publications.waset.org/abstracts/search?q=Minaleshewa%20Atlabachew"> Minaleshewa Atlabachew</a>, <a href="https://publications.waset.org/abstracts/search?q=Gietu%20Yirga%20Abate"> Gietu Yirga Abate</a>, <a href="https://publications.waset.org/abstracts/search?q=Duong%20Tuan%20Anh%20Nguyen"> Duong Tuan Anh Nguyen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Incorporation of non-metal/metalloid/metal dopants into the crystal lattice of cobalt oxide nanoparticles provides a promising approach to design novel nanocatalysts with enhanced catalytic activity for dye removal. Herein, boron-loading cobalt oxide nanocomposites were synthesized via a simple co-precipitation technique for the catalytic removal of Congo red azo dye. The boron-loading cobalt oxide nanocomposites (0.3M B@Co3O4) nanocomposites exhibited approximately 4.2-fold increase in specific surface area (548.13 m2 g-1), reduced band gap energy, and smaller crystallite size than pristine cobalt oxide nanoparticles. Therefore, boron-loaded Co3O4 NPs showed a higher Congo red dye removal efficiency of 98.61%, an increase of about 1.16 times compared to the pristine Co3O4 NPs (84.85%) in the preliminary experiment: 5 mg of catalyst, 50 mL of dye solution (50 mg/L), 1 mL of NaBH4 (0.25 mg/L), and stirring at 400 rpm for 40 min. In addition, kinetic analysis confirmed that the boron-loaded Co3O4 NPs followed pseudo-first-order kinetics, achieving 99.91% CR dye degradation in 6 min with an apparent rate constant, k, greater than 0.98 min-1. It is noteworthy that the catalyst maintained a removal efficiency of over 98% after ten reuse cycles, highlighting its excellent stability and reusability. Therefore, the boron-containing cobalt oxide nanomaterial is a promising nano-catalyst for the catalytic degradation of azo dyes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanocatalysts" title="nanocatalysts">nanocatalysts</a>, <a href="https://publications.waset.org/abstracts/search?q=congo%20red%20dye" title=" congo red dye"> congo red dye</a>, <a href="https://publications.waset.org/abstracts/search?q=catalytic%20degradation" title=" catalytic degradation"> catalytic degradation</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20remediation" title=" environmental remediation"> environmental remediation</a> </p> <a href="https://publications.waset.org/abstracts/198998/enhanced-nanocatalytic-congo-red-dye-removal-using-boron-loaded-cobalt-oxide-nanocomposites-from-aqueous-solutions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/198998.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">2</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> Human Immunodeficiency Virus (HIV) Test Predictive Modeling and Identify Determinants of HIV Testing for People with Age above Fourteen Years in Ethiopia Using Data Mining Techniques: EDHS 2011</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Abera">S. Abera</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Gidey"> T. Gidey</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Terefe"> W. Terefe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Testing for HIV is the key entry point to HIV prevention, treatment, and care and support services. Hence, predictive data mining techniques can greatly benefit to analyze and discover new patterns from huge datasets like that of EDHS 2011 data. Objectives: The objective of this study is to build a predictive modeling for HIV testing and identify determinants of HIV testing for adults with age above fourteen years using data mining techniques. Methods: Cross-Industry Standard Process for Data Mining (CRISP-DM) was used to predict the model for HIV testing and explore association rules between HIV testing and the selected attributes among adult Ethiopians. Decision tree, Naïve-Bayes, logistic regression and artificial neural networks of data mining techniques were used to build the predictive models. Results: The target dataset contained 30,625 study participants; of which 16, 515 (53.9%) were women. Nearly two-fifth; 17,719 (58%), have never been tested for HIV while the rest 12,906 (42%) had been tested. Ethiopians with higher wealth index, higher educational level, belonging 20 to 29 years old, having no stigmatizing attitude towards HIV positive person, urban residents, having HIV related knowledge, information about family planning on mass media and knowing a place where to get testing for HIV showed an increased patterns with respect to HIV testing. Conclusion and Recommendation: Public health interventions should consider the identified determinants to promote people to get testing for HIV. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=data%20mining" title="data mining">data mining</a>, <a href="https://publications.waset.org/abstracts/search?q=HIV" title=" HIV"> HIV</a>, <a href="https://publications.waset.org/abstracts/search?q=testing" title=" testing"> testing</a>, <a href="https://publications.waset.org/abstracts/search?q=ethiopia" title=" ethiopia"> ethiopia</a> </p> <a href="https://publications.waset.org/abstracts/34140/human-immunodeficiency-virus-hiv-test-predictive-modeling-and-identify-determinants-of-hiv-testing-for-people-with-age-above-fourteen-years-in-ethiopia-using-data-mining-techniques-edhs-2011" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34140.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">503</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> Sustainable Production of Tin Oxide Nanoparticles: Exploring Synthesis Techniques, Formation Mechanisms, and Versatile Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yemane%20Tadesse%20Gebreslassie">Yemane Tadesse Gebreslassie</a>, <a href="https://publications.waset.org/abstracts/search?q=Henok%20Gidey%20Gebretnsae"> Henok Gidey Gebretnsae</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nanotechnology has emerged as a highly promising field of research with wide-ranging applications across various scientific disciplines. In recent years, tin oxide has garnered significant attention due to its intriguing properties, particularly when synthesized in the nanoscale range. While numerous physical and chemical methods exist for producing tin oxide nanoparticles, these approaches tend to be costly, energy-intensive, and involve the use of toxic chemicals. Given the growing concerns regarding human health and environmental impact, there has been a shift towards developing cost-effective and environmentally friendly processes for tin oxide nanoparticle synthesis. Green synthesis methods utilizing biological entities such as plant extracts, bacteria, and natural biomolecules have shown promise in successfully producing tin oxide nanoparticles. However, scaling up the production to an industrial level using green synthesis approaches remains challenging due to the complexity of biological substrates, which hinders the elucidation of reaction mechanisms and formation processes. Thus, this review aims to provide an overview of the various sources of biological entities and methodologies employed in the green synthesis of tin oxide nanoparticles, as well as their impact on nanoparticle properties. Furthermore, this research delves into the strides made in comprehending the mechanisms behind the formation of nanoparticles as documented in existing literature. It also sheds light on the array of analytical techniques employed to investigate and elucidate the characteristics of these minuscule particles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanotechnology" title="nanotechnology">nanotechnology</a>, <a href="https://publications.waset.org/abstracts/search?q=tin%20oxide" title=" tin oxide"> tin oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20synthesis" title=" green synthesis"> green synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=formation%20mechanisms" title=" formation mechanisms"> formation mechanisms</a> </p> <a href="https://publications.waset.org/abstracts/182340/sustainable-production-of-tin-oxide-nanoparticles-exploring-synthesis-techniques-formation-mechanisms-and-versatile-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182340.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">62</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> Using the Yield-SAFE Model to Assess the Impacts of Climate Change on Yield of Coffee (Coffea arabica L.) Under Agroforestry and Monoculture Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tesfay%20Gidey%20Bezabeh">Tesfay Gidey Bezabeh</a>, <a href="https://publications.waset.org/abstracts/search?q=T%C3%A2nia%20Sofia%20Oliveira"> Tânia Sofia Oliveira</a>, <a href="https://publications.waset.org/abstracts/search?q=Josep%20Crous-Duran"> Josep Crous-Duran</a>, <a href="https://publications.waset.org/abstracts/search?q=Jo%C3%A3o%20H.%20N.%20Palma"> João H. N. Palma</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ethiopia's economy depends strongly on Coffea arabica production. Coffee, like many other crops, is sensitive to climate change. An urgent development and application of strategies against the negative impacts of climate change on coffee production is important. Agroforestry-based system is one of the strategies that may ensure sustainable coffee production amidst the likelihood of future impacts of climate change. This system involves the combination of trees in buffer extremes, thereby modifying microclimate conditions. This paper assessed coffee production under 1) coffee monoculture and 2) coffee grown using an agroforestry system, under a) current climate and b) two different future climate change scenarios. The study focused on two representative coffee-growing regions of Ethiopia under different soil, climate, and elevation conditions. A process-based growth model (Yield-SAFE) was used to simulate coffee production for a time horizon of 40 years. Climate change scenarios considered were representative concentration pathways (RCP) 4.5 and 8.5. The results revealed that in monoculture systems, the current coffee yields are between 1200-1250 kg ha⁻¹ yr⁻¹, with an expected decrease between 4-38% and 20-60% in scenarios RCP 4.5 and 8.5, respectively. However, in agroforestry systems, the current yields are between 1600-2200 kg ha⁻¹ yr⁻¹; the decrease was lower, ranging between 4-13% and 16-25% in RCP 4.5 and 8.5 scenarios, respectively. From the results, it can be concluded that coffee production under agroforestry systems has a higher level of resilience when facing future climate change and reinforces the idea of using this type of management in the near future for adapting climate change's negative impacts on coffee production. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Albizia%20gummifera" title="Albizia gummifera">Albizia gummifera</a>, <a href="https://publications.waset.org/abstracts/search?q=CORDEX" title=" CORDEX"> CORDEX</a>, <a href="https://publications.waset.org/abstracts/search?q=Ethiopia" title=" Ethiopia"> Ethiopia</a>, <a href="https://publications.waset.org/abstracts/search?q=HADCM3%20model" title=" HADCM3 model"> HADCM3 model</a>, <a href="https://publications.waset.org/abstracts/search?q=process-based%20model" title=" process-based model"> process-based model</a> </p> <a href="https://publications.waset.org/abstracts/174104/using-the-yield-safe-model-to-assess-the-impacts-of-climate-change-on-yield-of-coffee-coffea-arabica-l-under-agroforestry-and-monoculture-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/174104.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">3</span> Prioritizing Forest Conservation Strategies Using a Multi-Attribute Decision Model to Address Concerns with the Survival of the Endangered Dragon Tree (Dracaena ombet Kotschy and Peyr.)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tesfay%20Gidey">Tesfay Gidey</a>, <a href="https://publications.waset.org/abstracts/search?q=Emiru%20Birhane"> Emiru Birhane</a>, <a href="https://publications.waset.org/abstracts/search?q=Ashenafi%20Manaye"> Ashenafi Manaye</a>, <a href="https://publications.waset.org/abstracts/search?q=Hailemariam%20Kassa"> Hailemariam Kassa</a>, <a href="https://publications.waset.org/abstracts/search?q=Tesfay%20Atsbha"> Tesfay Atsbha</a>, <a href="https://publications.waset.org/abstracts/search?q=Negasi%20Solomon"> Negasi Solomon</a>, <a href="https://publications.waset.org/abstracts/search?q=Hadgu%20Hishe"> Hadgu Hishe</a>, <a href="https://publications.waset.org/abstracts/search?q=Aklilu%20Negussie"> Aklilu Negussie</a>, <a href="https://publications.waset.org/abstracts/search?q=Petr%20Madera"> Petr Madera</a>, <a href="https://publications.waset.org/abstracts/search?q=Jose%20G.%20Borges"> Jose G. Borges</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The globally endangered Dracaena ombet is one of the ten dragon multipurpose tree species in arid ecosystems. Anthropogenic and natural factors are now impacting the sustainability of the species. This study was conducted to prioritize criteria and alternative strategies for the conservation of the species using the analytical hierarchy process (AHP) model by involving all relevant stakeholders in the Desa'a dry Afromontane forest in northern Ethiopia. Information about the potential alternative strategies and the criteria for their evaluation was first collected from experts, personal experiences, and literature reviews. Afterward, they were validated using stakeholders' focus group discussions. Five candidate strategies with three evaluation criteria were considered for prioritization using the AHP techniques. The overall priority ranking value of the stakeholders showed that the ecological criterion was deemed as the most essential factor for the choice of alternative strategies, followed by the economic and social criteria. The minimum cut-off strategy, combining exclosures with the collection of only 5% of plant parts from the species, soil and water conservation, and silviculture interventions, was selected as the best alternative strategy for sustainable D. ombet conservation. The livelihood losses due to the selected strategy should be compensated by the collection of non-timber forest products, poultry farming, home gardens, rearing small ruminants, beekeeping, and agroforestry. This approach may be extended to study other dragon tree species and explore strategies for the conservation of other arid ecosystems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=conservation%20strategies" title="conservation strategies">conservation strategies</a>, <a href="https://publications.waset.org/abstracts/search?q=analytical%20hierarchy%20process%20model" title=" analytical hierarchy process model"> analytical hierarchy process model</a>, <a href="https://publications.waset.org/abstracts/search?q=Desa%27a%20forest" title=" Desa'a forest"> Desa'a forest</a>, <a href="https://publications.waset.org/abstracts/search?q=endangered%20species" title=" endangered species"> endangered species</a>, <a href="https://publications.waset.org/abstracts/search?q=Ethiopia" title=" Ethiopia"> Ethiopia</a>, <a href="https://publications.waset.org/abstracts/search?q=overexploitation" title=" overexploitation"> overexploitation</a> </p> <a href="https://publications.waset.org/abstracts/174113/prioritizing-forest-conservation-strategies-using-a-multi-attribute-decision-model-to-address-concerns-with-the-survival-of-the-endangered-dragon-tree-dracaena-ombet-kotschy-and-peyr" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/174113.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">101</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> Dairy Value Chain: Assessing the Inter Linkage of Dairy Farm and Small-Scale Dairy Processing in Tigray: Case Study of Mekelle City</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Weldeabrha%20Kiros%20Kidanemaryam">Weldeabrha Kiros Kidanemaryam</a>, <a href="https://publications.waset.org/abstracts/search?q=DepaTesfay%20Kelali%20Gidey"> DepaTesfay Kelali Gidey</a>, <a href="https://publications.waset.org/abstracts/search?q=Yikaalo%20Welu%20Kidanemariam"> Yikaalo Welu Kidanemariam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Dairy services are considered as sources of income, employment, nutrition and health for smallholder rural and urban farmers. The main objective of this study is to assess the interlinkage of dairy farms and small-scale dairy processing in Mekelle, Tigray. To achieve the stated objective, a descriptive research approach was employed where data was collected from 45 dairy farmers and 40 small-scale processors and analyzed by calculating the mean values and percentages. Findings show that the dairy business in the study area is characterized by a shortage of feed and water for the farm. The dairy farm is dominated by breeds of hybrid type, followed by the so called ‘begait’. Though the farms have access to medication and vaccination for the cattle, they fell short of hygiene practices, reliable shade for the cattle and separate space for the claves. The value chain at the milk production stage is characterized by a low production rate, selling raw milk without adding value and a very meager traditional processing practice. Furthermore, small-scale milk processors are characterized by collecting milk from farmers and producing cheese, butter, ghee and sour milk. They do not engage in modern milk processing like pasteurized milk, yogurt and table butter. Most small-scale milk processors are engaged in traditional production systems. Additionally, the milk consumption and marketing part of the chain is dominated by the informal market (channel), where market problems, lack of skill and technology, shortage of loans and weak policy support are being faced as the main challenges. Based on the findings, recommendations and future research areas are forwarded. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=value-chain" title="value-chain">value-chain</a>, <a href="https://publications.waset.org/abstracts/search?q=dairy" title=" dairy"> dairy</a>, <a href="https://publications.waset.org/abstracts/search?q=milk%20production" title=" milk production"> milk production</a>, <a href="https://publications.waset.org/abstracts/search?q=milk%20processing" title=" milk processing"> milk processing</a> </p> <a href="https://publications.waset.org/abstracts/189144/dairy-value-chain-assessing-the-inter-linkage-of-dairy-farm-and-small-scale-dairy-processing-in-tigray-case-study-of-mekelle-city" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/189144.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">59</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> Impact of Land-Use and Climate Change on the Population Structure and Distribution Range of the Rare and Endangered Dracaena ombet and Dobera glabra in Northern Ethiopia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Emiru%20Birhane">Emiru Birhane</a>, <a href="https://publications.waset.org/abstracts/search?q=Tesfay%20Gidey"> Tesfay Gidey</a>, <a href="https://publications.waset.org/abstracts/search?q=Haftu%20Abrha"> Haftu Abrha</a>, <a href="https://publications.waset.org/abstracts/search?q=Abrha%20Brhan"> Abrha Brhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Amanuel%20Zenebe"> Amanuel Zenebe</a>, <a href="https://publications.waset.org/abstracts/search?q=Girmay%20Gebresamuel"> Girmay Gebresamuel</a>, <a href="https://publications.waset.org/abstracts/search?q=Florent%20Noul%C3%A8koun"> Florent Noulèkoun</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Dracaena ombet and Dobera glabra are two of the most rare and endangered tree species in dryland areas. Unfortunately, their sustainability is being compromised by different anthropogenic and natural factors. However, the impacts of ongoing land use and climate change on the population structure and distribution of the species are less explored. This study was carried out in the grazing lands and hillside areas of the Desa'a dry Afromontane forest, northern Ethiopia, to characterize the population structure of the species and predict the impact of climate change on their potential distributions. In each land-use type, abundance, diameter at breast height, and height of the trees were collected using 70 sampling plots distributed over seven transects spaced one km apart. The geographic coordinates of each individual tree were also recorded. The results showed that the species populations were characterized by low abundance and unstable population structure. The latter was evinced by a lack of seedlings and mature trees. The study also revealed that the total abundance and dendrometric traits of the trees were significantly different between the two land uses. The hillside areas had a denser abundance of bigger and taller trees than the grazing lands. Climate change predictions using the MaxEnt model highlighted that future temperature increases coupled with reduced precipitation would lead to significant reductions in the suitable habitats of the species in northern Ethiopia. The species' suitable habitats were predicted to decline by 48–83% for D. ombet and 35–87% for D. glabra. Hence, to sustain the species populations, different strategies should be adopted, namely the introduction of alternative livelihoods (e.g., gathering NTFP) to reduce the overexploitation of the species for subsistence income and the protection of the current habitats that will remain suitable in the future using community-based exclosures. Additionally, the preservation of the species' seeds in gene banks is crucial to ensure their long-term conservation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=grazing%20lands" title="grazing lands">grazing lands</a>, <a href="https://publications.waset.org/abstracts/search?q=hillside%20areas" title=" hillside areas"> hillside areas</a>, <a href="https://publications.waset.org/abstracts/search?q=land-use%20change" title=" land-use change"> land-use change</a>, <a href="https://publications.waset.org/abstracts/search?q=MaxEnt" title=" MaxEnt"> MaxEnt</a>, <a href="https://publications.waset.org/abstracts/search?q=range%20limitation" title=" range limitation"> range limitation</a>, <a href="https://publications.waset.org/abstracts/search?q=rare%20and%20endangered%20tree%20species" title=" rare and endangered tree species"> rare and endangered tree species</a> </p> <a href="https://publications.waset.org/abstracts/174106/impact-of-land-use-and-climate-change-on-the-population-structure-and-distribution-range-of-the-rare-and-endangered-dracaena-ombet-and-dobera-glabra-in-northern-ethiopia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/174106.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">105</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" 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