18,082 Works

DAM BREACH ANALYSIS AND FLOOD INUNDATION MAPPING THE CASE OF KOGA DAM, ABAY BASIN, ETHIOPIA

open Access on January 2021

PERFORMANCE EVALUATION OF ADAMA CITY WATER SUPPLY SYSTEM, OROMIA, ETHIOPIA

Water is an essential element required for life. The demand for water is continuously
increasing due to an increase in population, industrialization, urbanization and
improved standard of living. The problem of providing a safe water supply service in
Adama City was increase due to an increase in population. Due to this problem, the
demand for additional water sources and infrastructure is growing. The aim of this study
was, to evaluate the performance of the Adama...

ASSESSMENT OF GROUNDWATER HYDRAULICS, HYDRODYNAMICS AND SUSTAINABLE UTILIZATION THE CASE OF ADDIS ABABA CITY

Addis Ababa is a big city that demands large volume of water supply for domestic, commercial, industrial
and institutional use. In the past two decades, the city has been under continuous demand of
additional water supply source improvement due to critical shortage of supply particularly a serious
problem at the outskirts at topographically high places. In order to overcome the existing problem,
groundwater development optioned as emergency water supply project. However, the development
continued without...

EVALUATION OF RURAL WATER SUPPLY SCHEMES AND SANITATION STATUS: THE CASE OF LEMUNA BILBILO WOREDA, OROMIA REGION, ETHIOPIA

This study is conducted to evaluate the water supply and sanitation status of Lemuna
Bilbilo Woreda, Arsi Zone, Oromia region, Ethiopia. The main objective is to evaluate
the water supply schemes, sanitation status and predict future water demand to provide
clear information that lead to corrective solution. Survey findings of the research show
respondents those who use water point, developed spring on spot and boreholes accounts
31%, 23% and 10% respectively. The remaining 34% of...

DEFLECTION AND LOAD CARRYING CAPACITY OF BAMBOO REINFORCED CONCRETE BEAM HANA MOGA ADUGNA

This study presents an experimental study to evaluate the feasibility of using bamboo as reinforcement
in reinforced concrete beam and bamboo reinforcement contribution in increasing carrying capacity of
plane concrete beam as well as its effect on deflection of a beam. To achieve this objectives series of
physical and mechanical properties test on low land bamboo collected from Didesa west wollega,
Oromia regional state were conducted. Also, one-point loading tests on bamboo reinforced concrete
beam...

DEFLECTION AND LOAD CARRYING CAPACITY OF BAMBOO REINFORCED CONCRETE BEAM HANA MOGA ADUGNA

This study presents an experimental study to evaluate the feasibility of using bamboo as reinforcement
in reinforced concrete beam and bamboo reinforcement contribution in increasing carrying capacity of
plane concrete beam as well as its effect on deflection of a beam. To achieve this objectives series of
physical and mechanical properties test on low land bamboo collected from Didesa west wollega,
Oromia regional state were conducted. Also, one-point loading tests on bamboo reinforced concrete
beam...

Analysis and Performance Simulation Of Solar Powered Water Pumping System: A Case Study in Jigjiga

Hussein Sofiya
In most regions of Ethiopia groundwater is the major source of freshwater for drinking and agriculture, almost all groundwater is obtained from shallow to moderately deep wells. Whether we use diesel generators to generate power or electricity from the grid, the energy consumption is high and also using diesel energy which is one of the major causes of air pollution. The possible solution to minimize this problem is using renewable energy system. In this research...

Analysis and Performance Simulation Of Solar Powered Water Pumping System: A Case Study in Jigjiga

Hussein Sofiya
In most regions of Ethiopia groundwater is the major source of freshwater for drinking and agriculture, almost all groundwater is obtained from shallow to moderately deep wells. Whether we use diesel generators to generate power or electricity from the grid, the energy consumption is high and also using diesel energy which is one of the major causes of air pollution. The possible solution to minimize this problem is using renewable energy system. In this research...

Improving existing VPN through Software Defined Networking

Mebratu Goytom
Currently, telecom service providers are using Multi-Protocol Label Switching (MPLS) technology in their IP core network to provide Virtual Private Network (VPN) services to their customers. However, most of the current IP core network of service providers' network does not have dynamic centralize configuration, provisioning and management mechanism, and also the network is not scalable enough. These limitations are caused by the vertical integration of data and control plane on networking device. In addition, the...

Automated Breast Cancer Detection using Computer Aided Diagnosis

Mouhabaw Bruhtesfa
Breast cancer is the most prevalent invasive cancer in women and stands second for chief cause of cancer deaths in women, next to lung cancer. The occurrence rate is exceeding in the developing countries though the rate of mortality has decreased which can be credited to the advances in diagnosis and treatment. Initial diagnosis involves histological observation (microscopic observation of cells/tissues) of affected breast tissues for structural changes, irregularities in cell shapes, distribution of cells...

Product Development and Evaluation of Fermented hot Pepper (Capsicum annuum L.), Datta

Leja Dawit
Hot pepper (Capsicum annum L.) is the world's most important vegetable and it is used as fresh, dried or processed products as vegetables, spices or condiments. This study was conducted with objectives to evaluate process methods; analyze nutritional composition of traditional datta developed from hot pepper (Capsicum annuum L.), grown in Southern part of Ethiopia. Fresh green and dried red fruits of capsicums were collected from the surroundings of Wolaita Zone. Moisture content, crude protein,...

Techno-Economic Investigation of LTE-Advanced Deployment for Addis Ababa, Ethiopia

Hailegebriel Gizachew
Due to innovative data services, the number of mobile subscriptions and amount of mobile data traffic will increase significantly globally. According to Ericsson mobility report, in 2022 the number of mobile data subscribers and traffic is forecasted to reach 9 billion and 71 Exabyte per month, respectively, from the current 7.5 billion and 8.8 Exabyte per month. Likewise, the report presented that Sub-Saharan Africa will also show a faster growth rate than any other region...

Secured and Usable Framework Design for Mobile Financial Service

Mohammed Asrar
All systems do not require security at the same level. Sensitive information such as financial transactions require higher level of security in terms of confidentiality, integrity and availability. Mobile Financial Service (MFS) is making financial transaction using mobile devices. Due to the inherent nature of MFS using wireless technology, it makes the service susceptible to different attacks. Currently, in Ethiopia mobile financial service is mostly being provided using Unstructured Supplementary Service Data (USSD) technology. This...

Secured and Usable Framework Design for Mobile Financial Service

Mohammed Asrar
All systems do not require security at the same level. Sensitive information such as financial transactions require higher level of security in terms of confidentiality, integrity and availability. Mobile Financial Service (MFS) is making financial transaction using mobile devices. Due to the inherent nature of MFS using wireless technology, it makes the service susceptible to different attacks. Currently, in Ethiopia mobile financial service is mostly being provided using Unstructured Supplementary Service Data (USSD) technology. This...

Process Optimization for Biodiesel Production from Trichiliaemetica Seed 'Luiya' Oil

Shumet Seid
The Energy utilization in the whole world has achieved by using the natural resource like coal, natural gas and petroleum diesel for a long period of time. Continuous using up of those nonrenewable energy sources leads to running down the reserve. In addition to this environmental problems are the main issue in the whole world and this leads to search more attractive and environmentally friend energy source. From this biodiesel is the best one to...

Analysis & Development of Solid Waste Management System of Addis Ababa

Zerayakob Belete
Solid waste, which is a consequence of day-to-day activity of human kind, needs to be managed properly. Addis Ababa like other cities in developing countries, faces problems associated with poorly managed waste collection operation. This thesis deals with the city's current solid waste management problems, collection and disposal. The city's refuse collection operation is modeled using queuing/simulation model. Spreadsheet Monte Carlo simulation technique is used to simulate the collection activities of the vehicles. In a...

Design of Low Cost Temperature Controlled Neonatal Transportation Device

Befekadu Liya
Temperature instability in preterm neonates is one of the major causes of morbidity and mortality. The immature systems and organs of preterm neonates in combination with poor facilities and after birth care lead to lifelong health complications, if not death. The drop of temperature in preterm neonatesneonate highly increases while they are transported through the embrace of nurses from delivery rooms to Neonatal Intensive Care Units (NICUs) in referral hospitals. They may also be transported...

Outdoor Propagation Pathloss Model for UMTS Networks using Feedforward Backpropagation Neural Network: Case of Addis Ababa, Ethiopia

Mekonen Yosef
The ubiquity nature of mobile networks, growth in technology, and innovations in mobile services will attract more users with the growing expectation and satisfaction. To accommodate the increasing number of users', operators are investing more in infrastructure and service delivery. In order to get the right revenue with the appropriate investment, the network planning and optimization work has to be done properly. In this regard, propagation pathloss is one of the main inputs for the...

Wind Resource Data Analysis for Mosoboharena Wind Farm

Mezid Abdella
Ethiopia has been relied much on hydroelectric plants for of its power demand. But Hydro power is exposed to the effects of climatic change. Problem of water level fluctuation is increasing continuously in most of the hydropower dams resulting from the climate change. As the demand for safe and clean electricity increases due to industrial development and population growth in the country, expanding wind energy industry is greatly helpful to Ethiopia to meet its growing...

Synthesis of High Refractive Index La3+ doped BaTiO3 Nanoparticles for Retroreflective Application Via Water Assisted Solid State Reaction

Redae Hailu
To guarantee the safe and well-organized movement of traffic on highway during bad weather and nighttime conditions, traffic signs, markings, helmet and safety textile paints have to be illuminated and made of retro-reflective materials. Materials having collective fluorescent and retro-reflective properties importantly improve visibility. For production of these materials Ceramics of glass having high refractive index are used. Most ceramic materials for different applications are synthesized by a conventional solid state reaction (SSR) method. In...

Wind Energy Resource Analysis: A Case Study of Aysha Wind Farm

Mengesha Wudu
Ethiopia satisfied 92 % of its energy demand using biomass sources while petroleum and electricity (hydropower) only contribute 7 % and 1 %, respectively, in 2009. Due to this limited electricity availability, among the total population only 23.3 % had access to electricity and among 82.7 % of Ethiopians living in rural areas only 2 % in 2011. In addition 99 % of the electricity production is from hydropower source which is highly vulnerable to...

Assessment of Emdibir Town Water Supply System in Cheha Woreda, Gurage Zone, SNNPR, Ethiopia

Wodajo Antonyos
Urban water supply and consumption challenges are the widespread problems in most of the developing countries such as Ethiopia. The thesis paper focused on the water supply system of Emdibir town, capital city of Cheha Woreda Guraghe zone of Southern Nation Nationality People Regional State of Ethiopia. The main objective of this study was to assess the water supply systems of Emdibir town and to suggest some remedial measure. The water supply coverage has been...

Managing Cross-Border Cellular Networks Interference via Game Theorybased Spectrum Sharing

Ahmed Endris Seid
The need for wireless services and high data rate is growing rapidly as a result of development of communication technologies. The challenges for operators to meet this rising demand of high data rates is radio spectrum which is a scarce and expensive resources. This scarcity arises from the exclusive allocation of the available spectrum relatively from the physical scarcity and has inefficiency in bandwidth usage. To improve capacity and Quality of Service (QoS), it is...

Sleep Mode Operation of Optical Networks for Power Consumption Minimization: a Case Study of Ethio Telecom Backbone Optical Transport Network

Belayneh Yohannes
Due to the growth in data traffic volume and diversification of applications that use telecommunication network infrastructure more power consuming telecommunication network equipments have been deployed. This scenario, although efforts are made to minimize the power consumption of the deployed equipments, has led to an increase in the power consumption of the sector. When it comes to backbone networks this increase in power consumption is more dependent on the traffic level, which is the aggregate...

Evaluation of QoE for Fixed wire-line Broadband Data Service in the case of Addis Ababa Enterprise Customers Ethiopia

Asfaw Wallelign
Telecom operators should monitor the satisfaction level of their customers and the quality of their networks to take on-time network optimization, redesign and marketing, in general effective resource allocation decisions. Therefore, it is necessary to evaluate the impact of fixed wire-line broadband performances on the customers' experience. QoE is an emerging technology, it has become an increasing research area. In this thesis, QoE is evaluated with objective and subjective methods. Most of earlier studies used...

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