Browsing by Author "Kebede, Teshome"
Item Household Level Determinants of Poverty in Ethiopia(Addis Ababa University, 2013-06) Kebede, Teshome; Sharma, M.K. (Prof.)Poverty has turned out to be a great global social and economic problem. In Ethiopia, it is multifaceted and deep rooted The objective of this study was to analyze the impact of socioeconomic and demographic characteristics of households on poverty in Ethiopia, both in urban and rural areas, using the latest Household Income, Consumption and Expenditure Survey (HICES) 2010-11 data. The study used a logistic regression model to identify determinants of wellbeing of the household by considering poverty status as dependent variable. Different households are classified as either poor or not-poor on the basis of absolute poverty line yearly per capita consumption of Birr 3781. Results showed that households that own agricultural land, headed by educated person and head of the household employed (self-employed or employed in the formal sector) are more likely to exit from poverty tmp. The results of the logistic regression also implied that household wellbeing is negatively affected by being headed by female, having large household size and high dependency ratio. Moreover, the study revealed that the probability of being poor is higher in rural areas. Any policy or program that is geared towards eradicating poverty in the counlly must recognize the impact of these factors in order for it to succeed.Item The Role of Development Induced Projects in the Spread of HIV/AID:The Case of Gilgel Gibe Hydro-Electric Project in Jimma Zone(AAU, 2007-07) Kebede, Teshome; Murugan, P. PhDThe purpose of this research is to examine the role of development induced projects in the spread of HIV/AIDS:The case of GGHP. The study is specifically intended to assess the contribution of the project to the emerhgence of factors aggravating the vulnerability of the workers to HIV/AIDS by increasing risk behavior of workers of the project on the one hand and the efforts made by the project to rescue its workers from the risk of being infected by HIV on the other.Item Superconductivity through Hubbard Model(Addis Ababa University, 2007-07) Kebede, TeshomeSuperconductivity through Hubbard model has been studied following Hartree Fock Approximation. The theoretical study has been made on the origin of superconductivity in electron-electron interaction with coulomb repulsion which is not phononic. The former interaction is under some condition, qualitatively different as compared to the latter interaction . The study by considering a Hubbard model is focused and brought out by applying the canonical transformation method as well as by simple renormalization operation that excludes double occupancy in the effective Hubbard Hamiltonian of the system and goes over in to the t-J model Hamiltonian that serves as a reference point (fixed point ). For small deviations from half filling holes move in the antiferromagnetic lattice and create disorder and establishes superconductivity. This Hamiltonian is used and theoretically examined in the second quantization notation by using Green’s function formalism and suitable decoupling approximations the survival of superconductivity has been shown with the computation of supper conducting order parameter ( ) and transition temperature (Tc) mathematically to make known its possibility. The phase diagram of the numerical estimates of the superconducting transition temperature versus values of electron (hole) boson coupling constant has been obtained and it is in agreement with the the experimental observation. We found that supper conductivity is obtained through Hubbard model