Browsing by Author "Abebe, Alemayehu"

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    Gis Applications in Suitability Modeling for Livestock Production in Tana Sub Basin-Blue Nile River Basin , Ethiopia
    (Addis Ababa Universty, 2004-07) Abebe, Alemayehu; Legesse, Dagnachew (PhD)
    Proper use of the land depends on the suitability of land for specific purposes. It is indeed of paramount importance to identify suitable land for livestock production while causing minimum impact to the environment. In this study, an attempt was made to identify suitable areas for livestock production using GIS methodology. Spatial modeling techniques are utilized to generate the land suitability model. The model is run in ArcGIS platform by using evaluation criteria: land use/land cover, soil classification slope and water availability through multicriteria decision marking rules. The model results revealed that 40.5% of the study area is most suitable for livestock production. In addition, 30% of the sub basin is indeed moderately suitable for animal production. Further, 8% of the study area is identified to be least suitable. On the other hand, areas that are found to be currently not suitable and permanently not suitable are 0.2% and 0.1% respectively. Tana sub basin is optimally located on suitable land for livestock production. That is, most of the basin is covered by optimal land use land cover, gentle slope, fertile soil type, and optimal water availability. However, the current livestock distribution exists on unsuitable areas. The results of the NDVI indices indicate that the basin has available feed source for animal production especially in the rainy season whereas in the dry season crop residue could serve as a feed source for the livestock. Furthermore, water availability is the most important factor that determines livestock production. Under this study, water availability is analyzed using buffering tools in a GIS. The results depict that most of the study areas are accessible or proximal to water resources (lakes, water points, and rivers) for livestock drinking. That is, most of the water resources are accessible for livestock production within the study area. This output indeed could be used as a method for assessing livestock water productivity in the basin. Keywords: GIS, Suitability Model, Water Availability, Feed, Livestock, Tana Sub Basin, Blue Nile
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    Relative Clauses in Chi\Ha a Gs Approach
    (Addis Ababa University, 1990-06) Abebe, Alemayehu; Ylmarn, Baye (PhD)
    This study examines the structure of relative clauses In Chaha. As a quldellne , it employs the theory of Government and Binding of Chomsky (1981, 1982, 1986) and recent developments. The theory assumes that relative clauses are Non-argument clausal complements of nouns at a maximal level. The internal structure of relative clauses are explained interms of sublhcories and principles which are assumed to be prcperttes of universal grammar. The study begins by analyzing the relativizing strategy in the language. It is argued that Chaha uses the Pro in situ strategy in Its relative clauses. This means that an empty category Pro is base generated in a relativized argument NP position of a relative clause. The relativized arqumcnt NP may be a complement of a verbal, a prepositional or a nominal head. The study shows that Chaha relative clauses are open syntactic predicates predicated of their head tJPs. The head NPs act as formal SUbjects of their predicated relative clauses, The rule which interpretes the relation between the head NPs and the predicated relative clauses is the rule of predicate Linking which applies at S-structure. In Chaha , an invariable element Iyal occurs in perfect relative clauses to introduce the clauses as predicated of their head NPs. This Iyal is treated as a complementizer and is base generated in cornp, position at D-structure. It does not phonetically occur in imperfect relative clauses. Although relativized NP positions are always empty, subject agreement affixes and pronominal object clltics play essential roles in identifying their content. The: former refers to subjects, and the latter to objects of [-N] categories.