AbstractMost work on wireless communications had focused on having an antenna array at only one end of the wireless link — usually at the receiver. Seminal papers by Gerard J. Foschini and Michael J. Gans, Foschini and Emre Telatar enlarged the scope of wireless communication possibilities by showing that for the highly-scattering environment substantial capacity gains are enabled when antenna ...

We propose a distributed spectrum access algorithm for cognitive radio relay networks with multiple primary users (PUs) and multiple secondary users (SUs). The key idea behind the proposed algorithm is that the PUs negotiate with the SUs on both the amount of monetary compensation, and the amount of time the SUs are either (i) allowed spectrum access, or (ii) cooperatively relaying the PU’s dat...

in the field of critical literature, siavash kasraie and ahmad matar's poems can be comparatively analyzed in terms of their social background, poetic content and linguistic strategies. applying a.van dijk’s socio–cognitive model of discourses studies, this paper uses critical discourse analysis to identify discourses formed in the works of the poets and analyzes the ideologies and discourse-or...

ACKNOWLEDGMENTS First and foremost, I would like to express my sincerest gratitude to my advisor Prof. Farrokh Ayazi for providing me with the opportunity, the resources and all the valuable guidance throughout the course of this work. Working under his supervision has been a privilege and a great learning experience, one that I shall forever be grateful for. I would also like to thank my disse...

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Narrative process and its narrative mechanisms help the reader make sense of the way events happen in a story. Using repeating images in the text of a story is a method of narrative development.  In Shahnameh, dealing with the world and images it gives rise to is one of the central motives of the text. The narrator in different parts of the poem seems captivated by the image of the world and th...

Some populations of Gundelia tournefortii were compared based on chemotaxonomical characteristics. In this study, some biochemical compounds such as total protein and storage proteins of shoot were studied. The populations were compared on the basis of biochemical characteristics using statistical methods. Different populations were collected from mountains of west Azarbaijan province. Total pr...

TITLE: Genetic dissection of lin-11 regulation in differentiation of C. elegans amphid sensory neurons ! ! iii! This thesis is dedicated to my family. Abstract The expression of lin-11 is regulated by enhancers located upstream from, as well as within, lin-11 intronic sequences. Multiple regulatory inputs control the spatiotemporal expression pattern of lin-11. To better understand that process...

SAEED ZAKERI §1. Introduction. Siavash Shahshahani began his mathematical career as a graduate student in Berkeley in the mid 1960's. It was the golden era of the theory of smooth dynamical systems. Only a few years earlier, Smale had laid the modern foundations of this beautiful theory. His pioneering work prompted an army of dynamicists, global analysts and topologists to study the dynamics o...

this study reviews the formations of the family in shahnameh; distribution of power in it; and its identity. therefore, we study the theoretical background related to the subject of the research, theories related to the topic of cultural theories of malinowski, radcliffe brown, ario and shlensky, ronard and proposed research and theoretical framework of the research were written according to th...