Browsing by Author "Abebe, Samuel"

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    Determinants of the Performance of Social Entrepreneurial Firms in Ethiopia: The case of Selam children village and Eminence Social entrepreneurship
    (Addis Ababa University, 2018-03) Abebe, Samuel; Ensermu, Mathios (PhD)
    Social entrepreneurship is the practice of responding through transformative, financially sustainable innovations aimed at solving social problems at the nexus of the public, private, and nonprofit sectors. The performance of social entrepreneurs in Ethiopia is the prim are not deal with their priority of impact in an objective way with their priority of impact an objective way. Besides the subjective way and disaggregated way of explaining these factors, no research is done to the highlight the role of social entrepreneurs to the social and economic development. Hence the objective of this study examines the determinate factors in social entrepreneurs in the case of Selam children village and Eminence Social entrepreneurship. On this research the regression model is conducted to analyze one dependent and five independent variables to evaluate the performance of two social Entrepreneur firms. Multiple regressions resulted from 256 target populations with the sample of 75 respondents, who are employees of the targeted organizations depicted five significant determinant factors for social entrepreneur’s performance: Those are planning, Information communication tools, government promotion strategy, Leadership style & Staff competency according to their contribution towards their impact on performance of social entrepreneur. These determinants factors collectively explain the performance of social entrepreneurs by 68.4% and the assessment showed that leadership style and staff competency were not significant as compared with other variables. Besides, planning, information communication tools and government promotion strategy were statically significant to study. This study highlighted which factors need special attention from different stakeholders with regard to their impact on the significant level of the determining factors in the performance of social entrepreneurs. Key words: - Social entrepreneurs, Performance, Determinate factors, Regression model, Information communication tools, Government promotion strategy, staff competency, leadership style.
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    Optimal Set Covering With Application
    (Addis Ababa University, 2011-01-01) Abebe, Samuel; Guta, Berhanu (PhD)
    The set covering problem (SCP) is a fundamental problem in the class of covering problems. Given a finite set and a family , ,…, of subsets of . . , , 1,2,…, the set covering problem is to find the minimum cardinality 1,2,…, such that . The elements of are called points. Given 1,2,…, , a point is said to be covered if it belongs to . In the case of minimum cost covering each set have a cost 0 and our aim will be minimizing Σ such that . In this project I focused, in general, on the subject matter of the problem and the main applications together with some basic algorithms for obtaining optimal (near-optimal) solutions including some MatLab programming.
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    Statistical Analysis of the Performance of City-Buses in Addis Ababa in 1990 E.C.
    (Addis Ababa University, 1999-06) Abebe, Samuel; Dilba, Gemechis (PhD)
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    Waste Water Management in Al-ASR Textile Factory of Dukem Town
    (Addis Ababa University, 2021-08) Abebe, Samuel; Simane, Belay Professor
    Although textile industries have economic and social benefit in the country, they have been degrading the environment through their discharges. This problem has also manifested itself in Dukem town, where the factory is surrounded by local farm lands and polluted by the liquid effluents. Consequently, this study aims to analyze the pollution level of AL-ASR textile waste water treatment plant based on EPA standard and assesses its waste water management in accordance with ISO 14001:2015 standard. The researcher employed laboratory sample test analysis, physical observation and interviews as research methods. Accordingly, the researcher finds that the main reason for this pollution is the factory’s lack of environmental management system and environmental policy, limited knowledgeable and skilled man power in waste water management, as well as its limitations of stakeholders participation and factory local experts. Based on the findings, the researcher recommends the factory to have environmental policy, implement an environmental management system, and provide capacity building training to the local expert. Besides, training need to be offered to the monitoring and evaluation team of Dukem town environmental, forest and climate change authority, such that appropriate monitoring and evaluation takes place and constructive feedback can obtained continuously