We discuss quotients of Anti-de Sitter (AdS) spacetime by a discrete group in light of the AdS-CFT correspondence. Some quotients describe closed universes which expand from zero volume to a maximum size and then contract. Maldacena's conjecture suggests that they should be represented in string theory by suitable quotients of the boundary conformal eld theory. We discuss the required identi ca...

Social and Personality Psychology Compass 2016; 10: 59 Abstract People often immerse themselves in dreams and fantasies about a desired future. Though such future fantasies are pleasant, they do not necessarily lead to the effort required to attain the desired future. Indeed, the more positively people fantasize about their desired futures, the less effort they invest and the less successful th...

accurate and correct performance of controller in cruise control systems is important. hence, in such systems, controller should optimize itself against noise and probable changes in system dynamic. as a matter of fact, in this article three approaches have been conducted to-ward this purpose: mit, direct estimation and indirect estimation. these approaches are used as controllers to track refe...

In the global village of today, more people have been moving and migrating than ever before creating a need for better communication. Thus community interpreting rose as a specialization serving the needs of members of the community who are unable to communicate with the system. Within this broad field of interpreting the specialist area of legal interpreting assumed a high position. However, l...

Neutrinos are the least detectable Standard Model particle. By making use of this fact, we consider dark matter annihilations and decays in the galactic halo and show how present and future neutrino detectors could be used to set general limits on the dark matter annihilation cross section and on the dark matter lifetime.

Age-related alterations in white matter have the potential to profoundly affect cognitive functioning. In fact, magnetic resonance imaging (MRI) studies using fractional anisotropy (FA) to measure white matter integrity reveal a positive correlation between FA and behavioral performance in older adults. Confounding these results are imaging studies demonstrating age-related white matter atrophy...