Background: Various studies have been conducted to determine the causes of drug abuse from a psychological perspective. Mental health has also been among the studied factors. The present study aimed to investigate the relationship between mental health and general self-efficacy beliefs, coping strategies and locus of control in male drug abusers.Methods: This was a correlational descriptive stu...

In this paper, we consider a variant of the well-known Steiner tree problem. Given a complete graph G = (V, E) with a cost function c : E → R and two subsets R and R satisfying R ⊂ R ⊆ V , a selected-internal Steiner tree is a Steiner tree which contains (or spans) all the vertices in R such that each vertex in R cannot be a leaf. The selected-internal Steiner tree problem is to find a selected...

objectives: the aim of this study was to assess the mental health of patients admitted in internal medicine, surgery and gynecology wards of imam khomeini hospital of tehran in 2009. method: the symptom checklist-90-r (scl-90-r) questionnaire was administered for 93 patients in internal, surgical and gynecological wards of imam khomeini hospital in 2009. result: in this study, the mean age was ...

The metabotropic GABA receptor (GABA(B)R) regulates calcium influx in neurons. Whole cell voltage-clamp techniques were employed to determine the effects of internal calcium on the activity of GABA(B)Rs. GABA(B)R receptor apparent affinity was maximal when bis-(o-aminophenoxy)-N,N,N',N'-tetraacetic acid (BAPTA) maintained internal calcium below 70 nM. Apparent affinity was reduced as internal c...

---, & C. S. Cox. 1962. Internal waves. Pp. 731763 in The sea, vol. 1. New York, Interscience Publ. LEGECKIS, R. 1979. Satellite observations of the influence of bottom topography on seaward deflection of the Gulf Stream off Charleston, South Carolina. J. Phys. Oceanogr. 9: 483-497. MCGILLIVARY, P. A., L. R. POMEROY, R. B. HANSON, A. M. WOOD, E. R. PEELE, J. A. KREWER, B. SHERR, E. SHERR, & S. ...

Selected-internal Steiner minimum tree problem is a generalization of original Steiner minimum tree problem. Given a weighted complete graph G = (V,E) with weight function c, and two subsets R ′ ( R ⊆ V with |R − R ′ | ≥ 2, selected-internal Steiner minimum tree problem is to find a Steiner minimum tree T of G spanning R such that any leaf of T does not belong to R ′ . In this paper, suppose c ...

BACKGROUND AND OBJECTIVES  Little is known about the relation between residual muscle strength and joint contracture formation in neuromuscular disorders. This study aimed to investigate the relation between residual muscle strength and shoulder joint contractures in children with sequelae of obstetric brachial plexus lesion (OBPL). In OBPL a shoulder joint contracture is a frequent finding. We...

The development and protection of standardizable technology and related core knowledge has become major concerns of high-tech enterprises (HTEs) in nowadays dynamic standardization environment, thus HTEs need to ensure their R&D capability embraces effective processes for standards-setting, upgrading and displacement. This paper proposes a framework for R&D capability of HTEs within a dynamic s...