Starting with a field theoretic approach in Minkowski space, the gravitational energy momentum tensor is derived from the Einstein equations in a straightforward manner. This allows to present them as acceleration tensor = const. × total energy momentum tensor. For flat space cosmology the gravitational energy is negative and cancels the material energy. In the relativistic theory of gravitatio...

THE effects of an accumulation of carbon dioxide and of a lack of oxygen on the respiratory movements of mammals have been intensively studied (Winterstein, 1923; Gesell, 1925). In the invertebrates, however, although it is known for a number of species that one or both of these two factors are operative, our knowledge of the whole question is fragmentary. Both an accumulation of carbon dioxide...

There has been a recent increase of interest in heterogeneous computing systems, due partly to the fact that a single parallel architecture may not be adequate for exploiting all of a program’s available parallelism. In some cases, heterogeneous systems have been shown to produce higher performance for lower cost than a single large machine. However, there has been only limited work on developi...

Recent studies suggest that the softerror rate in microprocessor logic is likely to become a serious reliability concern by 2010. Detecting soft errors in the processor’s core logic presents a new challenge beyond what error-detecting and correcting codes can handle. Currently, commercial microprocessor systems that require an assurance of reliability employ an error-detection scheme based on d...

This thesis examines and implements some state-of-the-art methods for human face recognition. In order to examine all aspects of the face recognition task at a generic level, we have divided the task into three consecutive steps: 1) Skin color detection (for identifying regions with skin-colored), 2) Face detection (no identification) and 3) Face recognition (for identifying which face is detec...

It is a review paper related to the following topics. General relativity (GR) is presented in the field theoretical form, where gravitational field (metric perturbations) together with other physical fields are propagated in an auxiliary either curved, or flat background spacetime. A such reformulation of GR is exact (without approximations), is equivalent to GR in the standard geometrical desc...

To my parents and my sister i ACKNOWLEDGEMENTS I thank my advisor, Dr. Nikil Jayant for teaching me how to be successful in the technological world, and for having complete faith in me right from the start to the finish of my PhD, and beyond. I would like to take the opportunity to thank my committee members, Dr. Constantine Dovrolis for being an integral part of my doctoral degree. I wish to t...

Acknowledgements I would like to thank Babak Hassibi, my mentor who was always around to give valuable suggestions—for both my project and my academic endeavours, and Ravi Teja Sukhavasi, my brilliant grad-student mentor who kindly took me under his wing and who always took the time to explain and derive important concepts for me. I have learned so much under both of their guidance. Abstract Re...

in the central iranianvolcanic belt (civb), north-west of shahre-babak, in the area of javazm, dehaj and khabr, about 60 subvolcanic porphyritic dacitic to rhyodacitic domes (1-10 km2) are intruded into a variety of rock sequences from mesozoic to early miocene in age. these rocks are a part of dehaj-sardoieh belt. the civb contains intrusive and extrusive rocks of cretaceous-quaternary age. ge...

a new method is developed for a fast identification of the stability situation of industrial processes. the proposed method includes two factor ratios of the control constants for the upper and lower control limits to process these constants. an indication ratio is then defined as the ratio of the maximum data range value to the difference between the maximum and average values for individual d...