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Neutron stars are invaluable tools for exploring stellar death, the physics of ultra-dense matter, and the effects of extremely strong magnetic fields. The observed population of neutron stars is dominated by the >1000 radio pulsars, but there are distinct sub-populations that, while fewer in number, can have significant impact on our understanding of the issues mentioned above. These populations are the nearby, isolated neutron stars discovered by ROSAT, and the central compact objects in supernova remnants. The studies of both of these populations have been greatly accelera...

We present results from an adaptive optics survey conducted with the Palomar and Keck telescopes over 3 years, which measured the frequency of stellar and sub-stellar companions to Sun-like stars. The survey sample contains 266 stars in the 3-10000 million year age range at heliocentric distances between 8 and 200 parsecs and with spectral types between F5-K5. A sub-sample of 101 stars, between 3-500 million years old, were observed in deep exposures with a coronagraph to search for faint sub-stellar companions. A total of 288 candidate companions were discovered around the sample st...

Groundwater represents an important supply source for municipal and irrigation uses in Far West Texas. The City of El Paso receives about 50 percent of its municipal water supply from surface water and 50 percent from local groundwater. Groundwater pumping in El Paso is from the Hueco Bolson and the Mesilla Bolson. Historic groundwater pumping in the Texas portion of the Mesilla Bolson has not resulted in significant changes in groundwater levels or groundwater quality in existing wells. Historic pumping in the Hueco Bolson has resulted in lowered groundwater levels and brackish groundwater ...

Advances in the field of information and communication technologies have substantially affected most segments of our life, leading to the Information Age or Information Revolution. On both individual and state scale, 'information' has become a vital 'commodity' by which one measures levels of knowledge, skills, well-being, prosperity and development. This academic work traces the evolution of the Information Age and the emerging trends of diplomacy and politics in today's world. It signals potential opportunities and threats, while strategically forecasting current and future implications. ...

Trends and perspectives in dynamic environments point towards a need for optimal operating levels in reconfigurable manufacturing activities. Central to the goal of meeting this need is the issue of appropriate techniques for manufacturing process planning optimization in reconfigurable manufacturing, i.e. (i) what decision making models and (ii) what computational techniques, provide an optimal manufacturing process planning solution in a multidimensional decision variables space? Conventional optimization techniques are not robust, hence; they are not suitable for handling multidimensional s...

In the field of antitrust, the freedoms to contract and compete can and do contradict. Profit-maximizing companies desire perfectly competitive input markets to minimize their costs, but want monopolistic markets for their outputs to maximize their profits. Consequently, they have strong incentives to undermine competition in their output markets. In a world without antitrust laws, many companies would thus eliminate competition by using their freedom to contract, either by entering into legally enforceable agreements which fix prices or divide up markets, or by merging and acquiring rivals to...

This study presents a comprehensive behavioral model for the determinants and consequences of price sensitivity in the domain of electronic entertainment. Survey data was collected in the fields of internet entertainment, video games, and mobile entertainment. The data is analyzed using a structural equation modeling approach for the whole sample and for each domain, respectively. The estimates yield a close overall model fit. However, considerable differences between the domains exist. The model is embedded in a learning theory paradigm that explains why price sensi...

The goal of the work reported in this dissertation is to develop methods for the acquisition and reproduction of high quality digital color images. To reach this goal it is necessary to understand and control the way in which the different devices involved in the entire color imaging chain treat colors. Therefore we addressed the problem of colorimetric characterization of scanners and printers, providing efficient and colorimetrically accurate means of conversion between a device-independent color space such as the CIELAB space, and the device-dependent color spaces of a scanner and a printer...

The purpose of business is to employ capital factors in such a manner as to generate value for its customers and profits for its owners. To achieve these ends, management must make at least three distinct decisions – the operating, investment, and financing decisions. The purpose of this study is to formulate a modeling methodology that harmonically analyzes and explains how the investment decision and capital elasticity influence competitive advantage. The research explores the descriptive literature for the current states of computational modeling, accounting theory and pra...

This work focuses on contemporary Zimbabwean Stone Sculpture - widely known until the early 1990s as "Shona Sculpture" - from the perspective of a critical anthropological analysis of cultural identity and representation. The analysis frames the inception of this art movement within the colonial socio-historical circumstances of its genesis, where discourse about the producers of this art form ("Shona discourse") was created. Drawing from the social context of inequality and racial (spatial) segregation, and from the concepts of the "primitive" in art and anthropology, the author aims to show ...