Browsing by Author "Berhanu Abate"

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    An Assessment of Community Participation in Supporting Primary Schools Southern Zone of Tigray
    (Addis Ababa University, 2013-06) Berhanu Abate; Getnet Tizazu
    The main purpose of this study was to assess the participation of local community in support of educational programs in primary schools and thereby identify the potential constraints and the drawbacks encountered, strengths observed and suggest viable recommendations that would enhance the endeavors further. To this end, the study employed both qualitative and quantitative research method. Accordingly, One hundred six copies of questionnaires have been prepared and distributed to 90 PTA members and 16 Wierda education officials. Besides, questions of interview were prepared for 20 LETB members and 20 local community members. A total of 96 subjects (90.56%) have filled in and returned the questionnaires and interviews were conducted with 40 participants. Moreover, document analysis was used to supplement the data gathered through questionnaire and interview. Finally, the data gathered were analyzed using percentage and mean values as well as qualitative analysis. The results indicate that the level of participation of PTA, LETB and the local community was satisfactory though it is mainly limited to labor contribution. Nevertheless, it has been constrained by factors such as lack of knowledge and skill of PTA and LETB members in mobilization and governance, lack of coordination among the authorities etc. Among other things the study recommended the need to raise the awareness of the community, the need to build the capacity of the community and encourage PTA members to create a facilitated condition for promoting the participation of the community in a sustainable and meaningful manner.
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    Determination of Coal Rank and Operational Efficiency through Blending Techniques in the ET-Coal Washing Plant in Dawuro, Ethiopia
    (Addis Ababa University, 2025-03) Berhanu Abate; Bisrat Kebede (PhD; Bekele Ayele (PhD) Co-Advisor
    The study investigates the impact of blending and subsequent washing and flotation processes on coal quality. Four raw coal samples sourced from different seams were blended to create a uni-form feed before undergoing flotation. The study provides laboratory results of coal samples be-fore and after blending, washed by ET- Washing plant, and flotation treatments, highlighting significant improvements in key quality parameters, such as calorific value, ash content, sulfur levels, moisture content, and volatile matter. The flotation process, in particular, demonstrated considerable advantages in reducing ash and moisture content while increasing calorific value, making the coal more suitable for energy production. However, challenges related to sulfur con-tent and volatile matter remain. Additionally, environmental concerns such as water contamina-tion, air pollution, and solid waste management were addressed, with recommendations for the implementation of flotation circuits, desulfurization, and efficient waste management practices to minimize environmental impact. Economic analysis of the plant’s operation, including capital and operating costs, demonstrated that while the current process is cost-effective, the addition of flotation could enhance coal recovery and overall revenue. The study concludes that flotation provides the most significant improvements in coal quality and efficiency, making it a viable option for enhancing the plant’s overall operational and economic performance.