the problem of finding the minimum cost multi-commodity flow in an undirected and completenetwork is studied when the link costs are piecewise linear and convex. the arc-path model and overflowmodel are presented to formulate the problem. the results suggest that the new overflow model outperformsthe classical arc-path model for this problem. the classical revised simplex, frank and wolf and a ...

ABSTRACT        Background and Objective: Doxorubicin (DOX) is an effective anticancer drug. It has been shown that  a short-term exercise performed prior to DOX-treatment has no effect on cardiotoxicity in young rats. In the present study, old and young rats were evaluated to determine the protective effects of pre-treatment with short-term exercise on D...

the purpose of this study was to determine the relationship between organizational citizenship behavior (ocb) and personality in experts of sport organization of tehran municipality. the research was descriptive and correlational. statistical sample equaled the statistical population (n=90), but only 83% of their data were analyzed. demographic questionnaire, organizational citizenship behavior...

Background & aim: Attitude is taken into account as the most important determinant of behavior. However, the present knowledge considering opinions of the youths on the verge of marriage is not sufficient. Therefore, this study aimed to investigate the attitudes towards childbearing in women and men on the verge of marriage attending health centers in Mashhad, Iran. Methods: This cross-sectiona...

OBJECTIVE This study examined perfectionism in relation to recovery from eating disorders by comparing different conceptualizations of perfectionism across healthy controls and fully recovered, partially recovered, and active eating disorder cases, where full recovery was defined using physical, behavioral, and psychological indices. METHOD Participants were primarily young adult females; 53 ...

 ABSTRACT Background: To investigate the predisposing and precipitating risk factors for suicide ideations and suicide attempts in young and adolescent females, we tried to introduce a holistic model of suicidal behavior in young and adolescent girls. Methods: This study is based on the survey studies and was cross-sectional. Considering high rates of suicide attempts in provinces of Iran, thre...