BACKGROUND The aim of this study was examination the relationship between mindfulness and drug craving in addicts undergoing methadone maintenance treatment. METHODS The subjects of this research were 80 addicts undergoing methadone maintenance treatment selected through available sampling from four addiction treatment center in Ahvaz from March 2012 to September 2012. Two questionnaires to e...

This paper presents a system dynamics model that allows the user to examine the effects of changes in host government minerals policy on the investment and operating decisions of mining firms. The emphasis throughout the model simulations is on the effects of environmental policy because of the significant effect it has on international mining. The model, comprising over 180 interrelated variab...

Although work factors have been associated with both presenteeism and exhaustion among hospital physicians, we lack knowledge on the dynamic relationship between demands in the work context and presenteeism and how this can be mediated by symptoms of exhaustion when controlling for job resources. The objective of this study is to examine a health impairment process of presenteeism among univers...

Genealogical data have been used very widely to construct indices with which to examine the contribution of plant breeding programmes to the maintenance and enhancement of genetic resources. In this paper we use such indices to examine changes in the genetic diversity of the winter wheat crop in England and Wales between 1923 and 1995. We find that, except for one period characterized by the do...

Relatively few studies examine the relationship between racial residential segregation and educational or cognitive outcomes. Using data from the National Longitudinal Study of Adolescent Health and the institutional resources model of neighborhood effects, I investigate one account of how macrostructural arrangements between race, neighborhood segregation, and school quality interact to produc...

In recent years, a growing number of B2B e-businesses are adopting inter-organizational information systems (IOS). IOS enable and facilitate sharing of IT resources and capabilities between two or more organizations. Scholars also agree that information technology (IT) recourses and capabilities are critical for delivering business value of IT. Although, extant literature has mainly focused on ...

Background Controlled ovarian hyperstimulation (COH) in conjunction with intrauterine inseminations (IUI) are commonly used to treat infertile couples. In this study we evaluated the relationship between IUI outcome and special causes of infertility. We also aimed to examine parameters that might predict success following IUI. MaterialsAndMethods In this cross-sectional study, we included 994 I...