Browsing by Author "Temesgen, Berhanu"

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    Application of Remote Sensing in . Lithological Mapping and Reconstruction of the Stratigraphy of North - western Mekele Area, Ethiopia.
    (Addis Ababa Universty, 1995-05) Temesgen, Berhanu; Russo, Antonio (PhD)
    The area under study is located within the Mekele out lier. It comprises Mesozoic sedimentary rocks unconformably overlain by trap volcanics. Landsat-TM images have been processed and geologically analysed in combination with revision of the previous works and present field survey for lithological mapping and reconstruction of the stratigraphy of the study area. In remote sensing the sensor and the obj ect to be sensed are located remotely apart. The link is due to electromagnatic (EM) waves. Thus in image processing and interpretation the knowledge of how EM radiation is generated, propagated, and modified when it interacts with materials is the main key. Materials produce a diagnostic spectral signature in response to the EM interaction. Generally, spectral signatures are related to the nature of the corresponding rock, which help to identi fy a material through image processing. Image processing includes statistical and graphical evaluation, ratioing, contrast enhancement, principal and canonical component analyses, combination of selected bands, texture and vegetation index analyses, classification, and visual interpretation of the images. Structures and other lineaments, lithological boundaries, and drainage patterns are traced directly from the screen during image interpretation. Ten mappable units are recognized both by digital image processing and visual interpretation. These are from youngest to oldest: Dolorite, Basalt, Amba Aradam Formation, Agula Shale, five separately mappable Antalo Limestone units, and Adigrat Sandstone. From sedimentary point of view, Adigrat Sandstone is fluviatile in origin, while the Antalo Limestone and Agula Shale are related with transgression and regression of the sea during Jurassic time. Amba Aradam Formation, on the contrary, lying unconformably on Agula Shale, is probably due to the withdral of the sea caused by an uplift of cratonic area related to the separation of America and Africa plates during the Cretaceous time. The final thematic images are geometrically rectified using selected ground control points to refer them with other maps. Digitally processed images expose fairly well the main lithologic units with some limitation.
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    An Assessment of Software Project Management Practices in Commercial Bank of Ethiopia
    (Addis Ababa University, 2020-06) Temesgen, Berhanu; Markos, Solomon(PhD)
    Software technology changes the way companies conduct business. It has an important role for banking and finance as it alters systems and processes for improved service delivery and customer satisfaction. In cognizant of this fact, many companies in Ethiopia (including banks) currently undertaking software projects. The objective of this study is to assess software project management practices in the case of Commercial Bank of Ethiopia. Project management frameworks, guidelines/tools and knowledge areas were used to assess the current practices of Commercial Bank of Ethiopia and to ensure its efficiency and uniformity in delivering software products. A total of 64 project managers and project team members in four different software projects were selected as respondents for the study with census survey. In order to gather the primary data, self-administered questionnaire was employed and IBM SPSS Statistics 22 was used for descriptive statistics with quantitative analysis to answer the research questions and objectives. The findings of the study indicate that various types of project management frameworks have been chosen by the respondents for software projects. Regarding project guidelines/tools, the combination of various guidelines/tools were used. With currently used frameworks and guidelines, 76.2% of respondents indicated that software projects in the bank were behind the schedule, 42.9% of respondents beyond the cost plan, 19.0% rejected quality and 7.1% totally failed & closed. As a result, this study recommended to use compatible software project management frameworks/tools that will effectively manage software projects, especially to iteratively recheck the fulfillment of project needs.
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    Micro Finance and Its Contribution to Enterprise Income in Urban Ethiopia: The Case of Debre Birhan and Asela Towns
    (Addis Ababa University, 1998-06) Temesgen, Berhanu; Demeke, Mulat (PhD)
    The study was conducted in two market [Owns, namely, Debre Birhan and Assela with the aim of identify ing the impact of microcredit on micro enterprise income. According to the findings of the study, borrowers in Debre Birhan were able to increase monthly enterprise income from 181.14 Birr per month before the loan to 252. 77 Birr per month after the loan. Non- borrowers reported current monthly enterprise income of Birr 154. 77. Borrowers in Assela indicated an increase in enterprise income from Birr 139.32 p er month before the loan to Birr230 per month after the loan. The current enterprise income of the non- borrowers was Birr 282.94 per month. The regression result showed that income is affected by several factors . Among the many factors, credit was significantly correlated to average microenterprise income in Debre Birhan. Credit was not significantly correlated with income in the case of Assela. Enterprise income was also affected by start-up capital, non-paid family workers, paid employees and productive assets in Debre Birhan. The other variable which correlated to income was the type of economic activity. Those who were engaged in service enterprises earned more income than manufacturing in both towns. As indicated credit was not Significantly correlated with income in the case of Assela. The possible reasons for this result were: - a) Improper selection of borrowers; b) lvfisleading information during the initiation of the project; c) Low business activity as compared to Debre Birhan and d) Low level of credit provided to operators in Assela.