3,007 Works

ALTERNATIVE AND INNOVATIVE PROJECT DELIVERY SYSTEM FOR ADDIS ABABA CITY ROAD PROJECTS

HABTAMU TEGEGNE DESTAYE & Wubeshet Jekale (Dr. Ing)
In today's Ethiopian construction climate, there is increasing pressure to improve project performance in terms of completing projects faster, improving quality and reduce the cost of administering their construction programs. Agencies like Addis Ababa City Roads Authority (AACRA) shall have clear contracting strategy which basically comprises of three components; to have appropriate project delivery system (PDS), procurement procedure and payment provision to respond and meet the demands such as best-value performance to assure project quality...

A COMPARATIVE STUDY OF CONSTRUCTION PROJECT MANAGEMENT SYSTEMS BY LOCAL AND FOREIGN CONTRACTORS

ESAYAS TESFAYE & Dr. Deribsa Abate,
The delivery of construction projects in Ethiopian is accused of inefficient performance. With this poor performance of the delivery of projects as the main driver, this study set major objectives of exploring the current practices of the management system of the construction processes in Ethiopia and investigating the major difference in applying the practices between local and foreign contractors as seen in the theoretical principles from literatures. As part of the approaches to achieve these...

ENGINEERING G OGICAL INVESTIGATION AND EVALUATION OF GULLET BOTANIC GARDEN DAM SITE, NORTH WEST OF ADDIS ABABA, CENTRAL ETHIOPIA

BELACHEW MOGES TSEGAYE & Dr. Matebie Meten.
Gullele Botanic Garden is one of the largest botanical gardens in Ethiopia, which is found northwest of Addis Ababa. In Gullele Botanic Garden, a dam was proposed to be constructed for irrigation and recreational purposes. The intended dam will have a height of 30 m and a dam axis length of around 180m. The main objective of this work is to investigate and evaluate the engineering geological aspects of the proposed dam site based on...

POTENTIAL FOR LITHIUM-EXPLOITATION IN ETHIOPIA: A BASELINE INVESTIGATION ON POSSIBLE LITHIUM-BRINE AND EVAPORITE DEPOSITS IN SELECTED MAIN ETHIOPIAN RIFT LAKES AND NORTHERN DANAKIL DEPRESSION

ASSNAKE BEKELE & ROLAND SCHMEROLD
Lithium is a metal with increasing demand on the global market mainly for its application in lithium ion battery for electric cars. Ethiopia has a potential for lithium deposits related with pegmatites but also lithium brine deposits may be expected in the country. The current research covered the Danakil depression and selected lakes of the Main Ethiopian Rift to check the indications of lithium brine and evaporite occurrences in Ethiopia. To achieve the research objectives,...

EVALUATION OF MICROBIAL INDUCED CALCITE PRECIPITATION METHOD AS A SOIL STABILIZATION

BELEN TESFAHUN
A newly emerging microbiological soil stabilization method, known as microbial induced calcite precipitation (MICP), is tested for geotechnical engineering applications. MICP is a promising technique that utilizes the metabolic pathways of bacteria to form calcite precipitation throughout soil matrix, to improve engineering properties of soil through formations of coating and bonds between soil particles. Strength and permeability of a given soil samples has been evaluated based on three researcher‟s laboratory test results on UCS &...

Knowledge and associated factors of lactational amenorrhea as a contraception method among postpartum women in Aksum town, Tigray Region, Ethiopia

Teklehaymanot Huluf Abraha & Tsehaynesh Gidey Welesamuel
Abstract Objectives: The objective of the study was to assess the prevalence of knowledge level and predictors of lactational amenorrhea method (LAM) as method of contraception among women who gave birth a year prior to the study period in the Aksum town, Tigray Region. The study was cross sectional in design conducted from March 25 to April 24, 2015. Results of the study could help the design of family planning strategies. Results: The knowledge status...

MATHEMATICAL MODELING OF FOOD WEB SYSTEM WITH PREY HARVESTING

EFREM TSEGAYE WOLANA
We proposed and studied a mathematical model which describes the dynamics of two preys and one predator web system with prey harvesting in which one predator shows a Holling type II functional response to one prey that is also harvested and a ratio- dependent response to the other prey. Analysis of the model showed that the three species would co-exist if the first prey were not harvested beyond their intrinsic growth rate. Numerical simulation of...

ASYMPTOTIC BEHAVIOR OF THE SOLUTIONS OF THEWHITHAM'S EQUATION

DEREJE WOLDE
In this thesis wok, the asymptotic behavior of the solutions of the initial value problem as t ! 1 is studied. Asymptotic formula, as t ! 1, uniform with respect to the spatial variables and with bounds for the re- mainder term, is found for the solutions of the Cauchy problem for dis- sipative equation of evolution, in particular, for the whitham equation. We used the method based on a detailed study of the nonlinear...

COMPARISON ON STABILITY AND CONVERGENCE OF FINITE DIFFERENCE METHOD IN TRANSFORMING NON DIMENSIONAL EXPLICIT AND IMPLICIT PARABOLIC PAR TIAL DIFFERENTIAL EQUATION

GIRMA MITIKU
In this thesis the convergence and stability criteria of the FDM in parabolic (heat) equation is examined with the Fourier and Neumann analysis and comparison is made for those methods, namely implicit, explicit and Crank Nicolson. Finally, the derived FDM from PDE is used and as a result its application turns to melting of ice which is a global problem.

Effect of Urbanization on Flood Generation (A Case Study on Addis Ababa City)

Fessahatsion Zemuy
The hydrologic behavior of the Addis Ababa urban watershed was characterized as subtle charter, with the objective of evaluating the hydrologic impacts of the increasing of the impervious area within its watershed and other factors. In order to decide on minimizing the impact of floods and to know the impact of urbanization on flood volumes and peak discharges, an effective flood volume estimation model is required. Towards this end, HEC HMS rainfall run off model...

SYNTHESIS AND CHARACTERIZATION OF LaMnO3- BASED CERAMIC MATERIALS FOR SOLID OXIDE FUEL CELLS

KASSAHUN LEWETEGN
Fuel cells are devices that convert the chemical energy of the fuel directly in to electrical energy and heat by electrochemical reactions. Interest in fuel cells started growing steadily with the question of how to provide electrical energy to support the growing energy economy in the world without the risk of pollution. Today’s fuel cells have provided answer to all the question and have an immiscible potential to supply partially supply world energy needs in...

ADOPTION OF DAIRY CATTLE PRODUCTION TECHNOLOGIES IN GONDAR TOWN, NORTH GONDAR ZONE, ETHIOPIA

TIGIST PETROS1 (MSC) CO-INVESTIGATORS  SISAY YEHUALA1 (MSC)
No abstract available for this resource

A Thesis Submitted to the Department of Accounting and Finance to undertake a study for Partial Fulfillment of the Requirements for the Award of a Master Science (M.Sc.) Degree in Accounting and Finance.

BATILE BARNAKA
Working capital management involves the management of the most short-term assets and liabilities of the firm which includes cash and cash equivalents, Inventories and trade and other receivables. Most firms do not hold the required amount of working capital and this has been a major obstacle to their overall profitability. The study used a quantitative research design of the six (6) selected private limited large scale manufacturing firms operating in the Hawassa city. For this...

STRATEGIES TO SURVIVE SOCIAL - ECOLOGICAL RISKS AMONG KONSO OF SOUTHERN ETHIOPIA

AYANO GUDANO
Konso people are known for their intensive agriculture and conservation practices that provide solutions to social and environmental problems. This research presents an empirical study on strategies to survive social-ecological risks among Konso of southern Ethiopia. The main aim of the study was to investigate how the Konso adults perceive social-ecological risks, the strategies they employ to deal with these risks and the mechanisms used to learn these strategies. To address the objectives of the...

Methicillin resistant Staphylococcus aureus in Ethiopia: a meta-analysis

Fentahun Tarekegn Setegn Eshetie
No abstract available for this resource

Assessment of Prevalence and Reasons for Termination of Pregnancy at Arbaminch General Hospital, Southern Ethiopia

ALEMAGEGN RETA
Introduction: Increasing legal access to abortion is associated with improvement in sexual and reproductive health. Conversely, unsafe abortion and related mortality are both highest in countries with narrow grounds for legal abortion. Objectives: To determine the prevalence and reasons for terminations of pregnancy at Arbaminch General Hospital Methods: A retrospective cross sectional study was conducted at Arbaminch General Hospital from March 10-20, 2008EC, a total of 182 cards of women who came for abortion services...

GIS BASED SURFACE IRRIGATION POTENTIAL ASSESSMENT OF RIVER CATCHMENTS FOR IRRIGATION DEVELOPMENT IN NORTH GOJJAM ABBAY BASIN

TIGIST KEBEDE JEMBERE
Assessing available land and water resources for irrigation is important for planning their use. Main objective of this study was assessing the water and land resources potential of river catchments in North Gojjam for irrigation development and generating suitable map of these resources by using Geographic Information System. Watershed delineation, identification of potential irrigable land, and estimation of irrigation water requirement and surface water resources of river catchments were the steps that are followed to...

THE IMPLEMENTATION OF COMMUNICATIVE GRAMMAR IN EFL CLASSES: GRADE 10 IN FOCUS AT THREE SELECTED HIGH SCHOOLS IN WOLAITA SODO TOWN

SILAS TEMMA GOTTA
This study was an attempt to investigate the implementation of communicative grammar in EFL classes: grade 10 in focus. In detail the study addressed the following research questions: 1) Do EFL teachers implement communicative grammar in EFL classes? 2) Do the techniques teachers use to teach grammar enable them to present the lesson communicatively? 3) Do EFL teachers use situations and contexts to create communicative activities to teach grammar structures in the context of language...

PERFORMANCE ASSESSMENT OF RAIN WATER HARVESTING BIRKAS: - THE CASE OF KEBRIBEYAH WOREDA OF SOMALI REGION, ETHIOPIA.

MULUGETA SHUME SHEBIE
Water pollution and water stress is tremendous problem in the pastoral area of Somali region including Kebribeyah Woreda. This study was made to assess the performance of traditional rain water harvesting Birkas as a source of domestic and livestock water supply at Kebribeyah Woreda. For this study a total of 150 household questionnaires conducted and 15 water samples from 15Birkas for water quality test were analyzed from selected Lebeshek, Gerbe and Meregacho Kebeles. The design...

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