Browsing by Author "Tadesse, Kassahun"

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    Macroeconomic Policy and Poverty Reduction in Ethiopia: A General Equilibrium Approach
    (Addis Ababa University, 2003-07) Tadesse, Kassahun; Woldehanna, Tassew (Associate Professor)
    This study presents a case study assessing instructors' provision of written responses to students' business letter writing practices at Admas College, a privately run business college in Addis Ababa. The goal is to examine, by means of detailed analysis of sample data gathered from 20 students, who are selected by availability sampling and instructors responses handling the course. Two instruments were used. A format with four micro- skills and conditions set for rating the instructors' formative responses against given rating scales was prepared. Then, the results were tabulated and analysed. The results showed that most of the students' works were rated below adequate standard and only a few of the students works were able to meet required letter writing standards. Then, the instructors written comments were collected and categorised using a format with six categories for which features were specified for characterising the instructors' comments. Using the six categories, the comments were summarised showing categories of clarity, style, form, reorganisation, provision of more information, and provision of less information. The results showed that a good number of the comments revolved around issues of clarity, style, and form, whereas lesser number of the comments were to do with issues of reorganisation, provision of more and/or less information. Moreover, it was observed that quite a good number of the comments were either too general to follow, or too strong or harsh, and did not teach or help the students to overcome their writing difficulties. On the other hand, however, significant number ofthe comments seems to have met the students' preferences to a certain extent. Based on the finding of the study, some possible recommendations are suggested.
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    Opportunities and Challenges of Promoting Sheno Butter as a Geographical Indication Product
    (Addis Ababa University, 2015-06) Tadesse, Kassahun; G/Michael, Yohannes (PhD)
    The overall objective of this study was to examine the possible opportunities and challenges of Sheno butter to be promoted as a Geographical Indication product for improving the socio economic condition of farmers. For this purpose, the necessary information were gathered through household questionnaire, focus group discussion, consumers and key informants interview and observation. Descriptive statistical analysis and triangulation method of analysis were utilized to present results and discussions. The finding of the study revealed that butter production in the study area is characterized by traditional production system based on local resource. The study also identified taste, color, aroma and texture as commonly perceived origin linked characteristics of sheno better. Moreover, the study revealed that driven by scarcity of natural pasture feeds, farm extension experts advice arose from agricultural policy strategy and inputs related factors, butter production system in the study area seems to be changed and this change would be a probable trend to be observed in the short and long term future in the area. Therefore, the study conclude that given the observed changing trend in production system, Sheno butter has uncertain potential to be promoted as a Geographical Indication Product, and at this moment promotion of the product as GIs can not be best option for improving the socio economic condition of producers. Based on simulations of the finding, the study forwards some suggestions and recommendations for researchers, policy makers and development practitioners for future action. Key words: Geographical indication, Livestock, Quality, Production system
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    Wind Resource Assessment at Adama II Wind Farm Using Wasp
    (Addis Ababa University, 2014-06) Tadesse, Kassahun; Assefa, Abebayehu (PhD)
    This paper presents the Estimation that has been undertaken in order to quantify the wind resource available at Adama II Wind Farm using the Wind Atlas and Application Program (WAsP). It was made through retrieving the data measured by anemometer and wind vanes at Kusaye site which is stored in a data logger from 16/11/2011 to 9/12/2012 at 70 meters above ground level. Establishment of Wind Farm is asserted by estimation of wind resource at a given site, applying wind flow modeling methodologies. The source data at Adama II Wind Farm indicated that the mean wind speed is 8.62 m/s whereas the emerged mean wind speed and the mean wind power density were obtained to be 8.66 m/s and 440 W/m2, respectively, at 70 m. Site independent or regional wind climate has also been calculated for five roughness classes and five standard heights along with all sectors of a Wind Rose to estimate the wind climate at the site through utilizing the characteristics of Sany SE7715 Wind Turbine Generator. The results of the assessment presented that the prevailing wind direction is ENE direction with more than one third of wind is blowing in ENE. From the recorded data at 70 m, the mean wind speed at 50 m is estimated to be 8.22 m/s, which suggests that the wind resource at Adama II is wind class of 6. At the mast location for a single WTG the wind power density is 452 W/m2 and the Gross Annual Energy Production ranges from 1.5 to 11.99 GWh at 70 m height. Placing the 102 SE7715 WTGs in accordance with the proposed layout at the Wind Farm, the Gross Annual Energy Production is 664.745 GWh and net AEP at the site is 403.669 GWh. After repositioning the WTGs to potential locations, the net AEP is estimated to be 478.786 GWh, an increment of 75.12 GWh on the Net Annual Energy Production, an increase of about 18.6 %.