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This book reconsiders the basic approaches behind the BEM method and in particular assesses and validates the equations forming the general momentum theory. One part of the book concerns the validation, using numerical fluid mechanics (CFD), of the different terms in the equations forming the momentum theory. Other parts present new ideas for extending the theory and for enhancing the accuracy of the BEM approach. Besides a general introduction and explanation of the momentum theory, the book also deals with specialized topics, such as diffusor-augmented rotors, wind tunnel corrections,...

Wind energy systems: Optimising design and construction for safe and reliable operation provides a comprehensive review of the latest developments in...

In the 1990s, Yugoslavia, which had once been a role model for development, became a symbol for state collapse, external intervention and post-war reconstruction. Today the region has two international protectorates, contested states and borders, severe ethnic polarization and minority concerns. In this first in-depth critical analysis of international administration, aid and reconstruction policies in Kosovo, Jens Stilhoff Sorensen argues that the region must be analyzed as a whole, and that the process of state collapse and recent changes in aid policy must be interpreted in connection...