Browsing by Author "Kebede, Mesfin"

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    Addis Ababa University College of Education And Behavioral Studies Departement of Educational Management and Leadership
    (AAU, 2021-07) Kebede, Mesfin; Nigussie, Dejene (PhD
    Servant Leadership qualities of principals in schools play a critical role in teachers ‘job satisfaction. Nevertheless, there is little research in the literature that is available on the links between principals’ servant leadership behavior and teachers’ job satisfaction in Addis Ababa high schools. Thus, the purpose of this study was to assess the relationship between servant leadership and teachers’ job satisfactions in the schools of Arada Sub city, Addis Ababa. The target population of the study consists of four hundred forty nine secondary school teachers. Of which 150 teachers, representing 33% of the population, were participated in the study. Stratified and simple random sampling methods were employed to select samples. Data were collected through a closed questionnaire filled by teachers through hard copy and they were analyzed through SPSS version 25 software. In the analysis of the data, descriptive statistics such as percent, frequency, mean, standard deviation were used. Correlation statistics were also used to study the relationship between the variables. According to the research findings, this study supported and verified that there is implementation of servant leadership qualities (M = 3.63), high job satisfaction (80.04%, M = 3.977) of teachers and strong relationship (r= .701**) between servant leadership practice and teachers’ job satisfaction. Therefore, to attain teachers’ satisfaction in their work, leaders in sample schools and others are advised to be service oriented and apply servant leadership approach in their respective work contexts.
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    Fabrication and Mechanical Property Characterization of Sisal fiber Reinforced Epoxy Resin Composite Material for Automotive body Application
    (Addis Ababa University, 2015-11) Kebede, Mesfin; Tilahun, Daniel (PhD))
    Fabrication and Mechanical Property Characterization of Sisal fiber Reinforced Epoxy Composite Material for Automotive Body Application Mesfin Kebede Addis Ababa University, 2015 The present Research work has been carried out to make use of Local Ethiopian Sisal fiber extracted from Ethiopian highlands. The goal of this paper is to fabricate and describe the processing techniques of specimen preparation conducting experiment to obtain and Characterize the Mechanical Property of sisal fiber reinforced epoxy composite Material The sisal fiber were extracted from Ethiopian highland sisal plant by retting and combing process manually after extraction 18% sodium hydroxide was used for further lignin, hemicelluloses and other fiber remnants removal for the improvement of bond & interfacial shear strength of the sisal fiber The tensile, compression and flexural properties of sisal fiber reinforced epoxy composite material were carried out using sisal fiber reinforced epoxy composite samples According to the ASTM standard the specimen is fabricated by using the epoxy resin (system 2000) as a matrix and the hardener(2060) and the sisal fiber as a reinforcement material with the 15%,25% and 35% fiber weight fraction, random oriented chopped fibers by using hand layup fabrication technique the specimen is prepared. 35% treated SFREC was found a higher tensile strength, 25% untreated SFREC was found a higher compressive strength and 15% treated SFREC was found a higher flexural strength furthermore the results of this study indicate that using sisal fibers as reinforcement in polymer matrix could successfully develop a composite material in terms of high strength and rigidity for light weight Automotive body interior panel. Key Words: sisal fiber reinforced epoxy composite, interior panel, Hand layup fabrication technique, tensile. compression and flexural properties
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    The Relationship Between Servant Leadership Practice and Teachers’ Job Satsfaction as Perceived By Teachers In The High Schools of Arada Sub City
    (AAU, 2021-06) Kebede, Mesfin; Nigussie, Dejene (PhD
    Servant Leadership qualities of principals in schools play a critical role in teachers ‘job satisfaction. Nevertheless, there is little research in the literature that is available on the links between principals’ servant leadership behavior and teachers’ job satisfaction in Addis Ababa high schools. Thus, the purpose of this study was to assess the relationship between servant leadership and teachers’ job satisfactions in the schools of Arada Sub city, Addis Ababa. The target population of the study consists of four hundred forty nine secondary school teachers. Of which 150 teachers, representing 33% of the population, were participated in the study. Stratified and simple random sampling methods were employed to select samples. Data were collected through a closed questionnaire filled by teachers through hard copy and they were analyzed through SPSS version 25 software. In the analysis of the data, descriptive statistics such as percent, frequency, mean, standard deviation were used. Correlation statistics were also used to study the relationship between the variables. According to the research findings, this study supported and verified that there is implementation of servant leadership qualities (M = 3.63), high job satisfaction (80.04%, M = 3.977) of teachers and strong relationship (r= .701**) between servant leadership practice and teachers’ job satisfaction. Therefore, to attain teachers’ satisfaction in their work, leaders in sample schools and others are advised to be service oriented and apply servant leadership approach in their respective work contexts.