background as one of the most important components of harm reduction strategy for high-risk groups, following the hiv epidemics, methadone maintenance treatment (mmt) has been initiated in prisoners since 2003. in this paper, we aimed to assess the advantages and shortcomings of the mmt program from the perspective of people who were involved with the delivery of prison healthcare in iran.   me...

background: hookah smoking has increased worldwide especially among youth and young adults and has been identified as an emerging threat to public health. the aim of the present study was to determine the prevalence of hookah use and related factors in a sample of iranian college students. methods: this study took place in tabriz (northwest of iran) in april and may 2011. the randomly selected ...

are closed. Manifolds carrying a hypersymplectic structure have a rich geometry, the neutral metric is Kähler and Ricci flat and its holonomy group is contained in Sp(2n,R) ([8]). Moreover, the Levi Civita connection is flat, when restricted to the leaves of the canonical foliations associated to the product structure given by E (see [2]). Metrics associated to a hypersymplectic structure are a...

This paper analyzes symmetric, single item auctions in the private values framework, with buyers whose preferences satisfy the axioms of Yaari’s (1987) dual theory of choice under risk. It is shown that when their valuations are independently distributed, risk averse buyers are indifferent among all the auctions contained in a big family of mechanisms that includes the standard auctions. It is ...

There has been a little research focusing on the relationship between the key success factors and the benefits of ubiquitous supply chain management (USCM) adoption. Relying on the literature review, case analysis and interview, this research identified the key success factors and the benefits associated to the adoption of USCM. Upon collecting survey data, this research carried out an empirica...

We present a definition of increasing uncertainty, in which an elementary increase in the uncertainty of any act corresponds to the addition of an delementary betT that increases consumption by a fixed amount in (relatively) dgoodT states and decreases consumption by a fixed (and possibly different) amount in (relatively) dbadT states. This definition naturally gives rise to a dual definition o...

We derive representations of higher order dual measures of risk in Lp spaces as suprema of integrals of Average Values at Risk with respect to probability measures on (0, 1] (Kusuoka representations). The suprema are taken over convex sets of probability measures. The sets are described by constraints on the dual norms of certain transformations of distribution functions. For p = 2, we obtain a...

In a model independent discrete time financial market, we discuss the richness of the family of martingale measures in relation to different notions of Arbitrage, generated by a class S of significant sets, which we call Arbitrage de la classe S. The choice of S reflects into the intrinsic properties of the class of polar sets of martingale measures. In particular: for S = {Ω}, absence of Model...