We examine the thermodynamic stability of large black holes in four-dimensional antide Sitter space, and we demonstrate numerically that black holes which lack local thermodynamic stability often also lack stability against small perturbations. This shows that no-hair theorems do not apply in anti-de Sitter space. A heuristic argument, based on thermodynamics only, suggests that if there are an...

Access control has traditionally assumed a single, monolithic authorization policy, generally expressed as an access matrix. We argue that this assumption does not fit ecommerce applications, which are governed by a potentially large set of independently stated, evolving contracts. In order to support this growing class of applications we propose an enforcement mechanism which uses certified-co...

Recommender systems are used extensively now-a-days for various web-sites such as for providing products suggestions based on customers’ purchase history and searched product keywords. Current recommendation system approaches lack of a high degree of stability. Diversification of prediction is also important feature of recommender system. Having displayed same set of results every time may incr...

results presence of soy pc improved mechanical properties, lowered swelling ratio and increased stability of the films. solubilizing activity of phospholipid resulted in higher flux of drug release from formulation containing higher amount of soy pc. antifungal efficacy of formulations was confirmed against two species of dermatophytes in vitro. conclusions this topical composite film had the p...

background: because of airway stimulations during the bronchoscopy and lack of direct access to the airway, preferred method of anesthesia for rigid bronchoscopy is already controversial. in this study we compared inhalation anesthesia with total intravenous anesthesia (tiva) for rigid bronchoscopy. method and materials: 30 patients aged 2-6 years were chosen divided on two same groups. anesthe...

The aim of this study includes investigation into the impact of education based on Gardner’s Theory of Multiple Intelligences (MI) on educational achievement of high school students (Grade II) in mathematics from Garmsar City. The current study is of applied type in terms of nature since research is seeking for testing of some theoretical concepts in real and live situations. Whereas the presen...

We study a competitive supply marketplace where multiple suppliers offer a single nondifferentiated product to multiple buyers. Within this multi-supplier, multi-buyer marketplace, each buyer chooses the supply partner that serves the buyer’s order profile, described by his order size and delivery frequency, with the best price. Suppliers differ from each other in terms of their logistic cost s...

background: non communicable diseases (ncd) will account for 73% of deaths and 60% of the global disease burden by 2020. physical activity plays a major role in the prevention of these non‑communicable diseases. the stress involved in meeting responsibilities of becoming a physician may adversely affect the exercise habits of students. so, the current study aimed to study the practice of physic...

The Pearson-Fisher chi-squared test can be used to evaluate the goodnessof-fit of categorized continuous data with known bin endpoints compared to a continuous distribution, in the presence of unknown (nuisance) distribution parameters. Rayner and McAlevey [11] and Rayner and Best [9],[10] demonstrate that in this case, component tests of the Pearson-Fisher chi-squared test statistic can be obt...