Communication for development in Africa

A major concem about African development is not so much that the war on povelfy is far from being won but because the practice of development administrators lacks professionalism.Calls for involving beneficiaries in democratic project decision making, for conducting systematic social science research as the basis for external intervention, and for

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Numerical Investigation of Hydrodynamic Characteristics of a Rim-Driven Thruster Coupled with an Underwater Vehicle

In this paper, the hydrodynamic characteristics of a rim-driven thruster (RDT) behind the hull of an underwater vehicle are investigated.The studied underwater vehicle is the benchmark DARPA (Defense Advanced Research Projects Agency) suboff model, with and without full appendages.In order to verify and validate the numerical model, a grid sensitiv

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