introduction: oral manifestations can be the first signs of human immunodeficiency virus/acquired immunodeficiency syndrome (hiv/aids) and a useful marker for the progression of this disease. the present study aimed to determine the prevalence of oral manifestations and examine their relationship with socio-demographic factors in hiv-positive patients in the health centers affiliated to zahedan...

We survey one area of the emerging field of algorithmic game theory: the use of approximation measures to quantify the inefficiency of game-theoretic equilibria. Potential functions, which enable the application of optimization theory to the study of equilibria, have been a versatile and powerful tool in this area. We use potential functions to bound the inefficiency of equilibria in three dive...

We establish that the fraction of preference profiles for which the random serial dictatorship allocation is ordinally efficient vanishes for allocation problems with many object types. We consider also a probabilistic setting where in expectation agents have moderately similar preferences reflecting varying popularity across objects. In this setting we show that the probability that the random...

scorpionism is a known significant problem of medical and social importance in many tropical and subtropical regions including the middle east. in iran, highest prevalence of scorpion sting about 60% of all the stings has been reported from khuzestan province. among the 21,000 cases of reported scorpion stung patients, 12% were caused by h. lepturus, but contributed to 95% of all moralities in ...

scorpionism is a known significant problem of medical and social importance in many tropical and subtropical regions including the middle east. in iran, highest prevalence of scorpion sting about 60% of all the stings has been reported from khuzestan province. among the 21,000 cases of reported scorpion stung patients, 12% were caused by h. lepturus, but contributed to 95% of all moralities in ...

Subsidies are considered important means to facilitate the provision of public transit, yet the empirical evidence implies that they can have harming effects on costs and possibly also on operators’ performance. This paper examines the impacts of deficit-balancing subsidies on the cost inefficiency of local public bus companies in Germany, where a complex system allocates ample financial suppor...

The price of anarchy is by now a standard measure for quantifying the inefficiency introduced in games due to selfish behavior, and is defined as the ratio between the optimal outcome and the worst Nash equilibrium. However, the price of anarchy is not even defined in games that admit no Nash equilibrium. We propose the dynamic inefficiency measure, which quantifies the average inefficiency int...