Browsing by Author "Gebremedhin, Habtom"

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    Earthquake Hazard Assessment with the Help of Remote Sensing and Gis Techniques
    (Addis Ababa Universty, 2006-06) Gebremedhin, Habtom; Ahmad, Syed (PhD)
    The earthquake hazard in an area depends mainly on three factors: - 1) The Regional earthquake sources and seismic wave propagation characteristics, 2) The local geology’s response to, and modification of, Earth- quake ground shaking and 3) Type and use of buildings and life lines constructed in the area, which includes the:- the number of people living under the roof, the time the earthquake happened ,night, rush hour, day time etc. In this study the study area is assessed in terms of these controlling factors, it is found to be the most earthquake hazard prone area in terms of earthquake frequency, in terms of population density, though it is not densely populated now(around 7000), the population in Semera town is expected to grow to around 18,000 by the year 2025, and the type of buildings in the area are from single to two storey concrete type of buildings, an earthquake intensity level of VIII and IX are expected in the area, these earthquake intensities have a power that can damage these buildings, the Ethiopian building code standard uses the same building regulations for all towns in the rift(Arbaminch, Ziway, Nazret, Semera, Dessie, michew, Mekelle, Adigrat, etc),hence the building code needs updating, because the intensity levels expected in semera area is higher than the other areas in the rift.
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    Project Procurement Practice At Yara Dallol Bv, Dallol Potash Project
    (Addis Ababa University, 2017-06-12) Gebremedhin, Habtom; Bekalu, Wubishet (PhD)
    The purpose of this study is to describe project procurement management practice at Yara Dallol BV Dallol potash project. In order to address this study a descriptive research design was employed as with both quantitative and qualitative approaches were used. The main sources of data were both primary and secondary source of data i.e semi structured-interview and close ended questioner as a primary data and different company publications and reports were used and analyzed as a source of secondary data. The sampling design that was employed for this study was a non-probability sampling and the sampling type that was applied for this study is purposive sampling. In which data was gathered by distributing questionnaires to 35 respondents, where 33 were successfully completed and collected, an interview was conducted with the 4 top level managers. The data obtained through questionnaire has been analyzed quantitatively using percentages and numerical and a descriptive analysis was performed. In addition to this, the data obtained using interviews has been analyzed qualitatively. The study deals with the procurement practice of Yara Dallol BV potash project by dividing the procurement process in to four categories; procurement planning, conducting procurements using SOP, monitoring and controlling procurements and closing procurements. With the findings stated, the appropriate recommendations were presented at the end of this research on what actions should be taken in order to improve project procurement management practice in the project