Browsing by Author "Mulugeta, Samuel"

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    Chiral Perturbation theory with Applications to Some Hadronic Process
    (Addis Ababa University, 2011-06) Mulugeta, Samuel
    This project mainly describe the introduction to chiral perturbation theory for strong interaction at low energy level and deals with quantum chromodynamics and its global symmetry in the concept of chiral limit. This project also describe the commutator and anti commutator of charge operators of quarks in hadron spectrum. Then we will construct e ective Lagrangian for both global and local symmetry and it show e ective Lagrangian is invariant under Su(3)L Su(3)R symmetry transformation.Then we calculate currents from e ective Lagrangian. Finally, by discussing e ective Lagrangian and weingers power counting scheme we will see application of quantum chromodynamics,especially pion decay
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    The Demand for Money and Monetary Policy in Ethiopia
    (A.A.U, 2005-06) Mulugeta, Samuel; Panda, G. (Dr)
    It is repeatedly noted that the existence of a stable demand for money function IS very crucial for the conduct of monetary policy. Accordingly this study attempted to estimate a demand for money illation for Ethiopia using quarterly data ranging from 1970171 :1 to 2003104:lV. The study tried to estimate both the long-run and short-run demand for real narrow money balances using the Johansen multivariate framework by taking real GDP, the saving deposit rate, the inflation rate and the depreciation rate of the birr in the paraUel market as explanatory variables. The depreciation rate of the birr in the parallel market was, however, dropped from the long-run model as its inclusion could not result in a meaningful co integration relationship. Thus, in the long-run demand for real narrow money holdings was found to depend positively on real GDP and negatively on the saving deposit rate and the one period-lagged inflation rate. The coefficient of real GDP was also close to unity consistent with the quantity theory of money. Of the two opportunity cost variables in the model the inflation rate was found out to have a much pronounced impact on the demand for money reflecting the low level of development of the financial system. In the short-run, only lagged values of money holdings and real GDP were found out to have significant impact on the demand for money. None of the opportunity cost variables were found to have any impact on the demand for money in the short-run. This is due to the low level of development of the financial system which limits the availability of many alternatives to money holdings. This observation is corroborated by the very low coefficient of the error correction term in the vector error correction model which shows the speed of adjustment to long-run equilibrium.
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    Internal Audit: Reporting Relationship in Ethiopian Public Enterprises
    (Addis Ababa University, 2008-06) Mulugeta, Samuel; Gebrehiwot, Gebremedhin (Ato)