the purpose of this study is to investigate the relationship between stress & time management skills. in this descriptive study, 103 personnel were selected from sari health center, by stratified random sampling, and data was gathered by two questionnaires from samples. results: there is a significant negative relationship in two component study. also, females´ stress level was higher than in m...

The Mashhad drug and poison information center (MDPIC) was officially established in 2000 to provide up-to-date information on medications. The objective of this study is to provide an epidemiologic profile of drug inquiry and poisoning-related phone calls to MDPIC from 2007 to 2017. This article is a descriptive retrospective study in which all inquiries about drugs and poisoning cases receive...

location-allocation is a combinatorial optimization problem, and is defined as non deterministic polynomial hard (np) hard optimization. therefore, solution of such a problem should be shifted from exact to heuristic or meta heuristic due to the complexity of the problem. locating medical centers and allocating injuries of an earthquake to them has high importance in earthquake disaster managem...

background: aggressive fibromatosis is a rare benign tumor with no potential for metastasis; however, its aggressive nature causes treatment failure and episodes of recurrence. there is no report from iran about the treatment of this tumor, and all published articles are single-case reports, therefore in this study, we report our experience from two of the largest referral centers of the south ...

in order to evaluate the economic performance of rehabilitation centers for addicted persons, the welfare organization asked all its centers to send the expense table of esfand 79-80 and fill out the information wanted there. the economic analysis is based upon this information. also, each center is provided with a questionnaire to estimate monthly expenses. according to the preventive scale of...

the center (periphery) of a graph is the set of vertices with minimum (maximum)eccentricity. in this paper, the structure of centers and peripheries of some classes ofcomposite graphs are determined. the relations between eccentricity, radius and diameterof such composite graphs are also investigated. as an application we determinethe center and periphery of some chemical graphs such as nanotor...

in this paper, we study the arens regularity properties of module actions and we extend some proposition from baker, dales, lau and others into general situations. we establish some relationships between the topological centers of module actions and factorization properties of them with some results in group algebras. in 1951 arens shows that the second dual of banach algebra endowed with the e...