Personal well-being is important structure that in low level results in depression and social isolation and reduction of mental and physical health (king, 2001). So, because of the high rate of depression and anxiety and association of them with stress among students, this article study and assessed the anxiety, depression, stress and personal well-being (quality of life) among students. Hypoth...

ing the cost (c(y − x) +K) from revenue, we obtain the total profit f(ξ, x) = r(ξ, y)− c(y − x) −K = 

In this paper, we prove the applicability of the strong stability method to inventory models. Real life inventory problems are often very complicated and they are resolved only through approximations. Therefore, it is very important to justify these approximations and to estimate the resultant error. We study the strong stability in a periodic review inventory model with an (R, s, S) policy. Af...

background & aim: nurse job-related burnout is a global issue; however, it remains unclear how coping strategies over a maintained period of time may influence nursing burnout. the aim of this study was to evaluation the factors associated with burnout of nurses working at a state hospital. methods & materials : this cross-sectional study was carried out with 446 nurses working at state hospita...

this paper presents a new formulation for warehouse inventory management in a stochastic situation. the primary source of this formulation is derived from fp model, which has been proposed by fletcher and ponnambalam for reservoir management. the new proposed mathematical model is based on the first and the second moments of storage as a stochastic variable. using this model, the expected value...

OBJECTIVE To examine the separate and joint effects of male and female fertility problem (FP) stress and the source of stress (e.g., personal, social, marital) on treatment outcome. DESIGN Prospective, epidemiological cohort design. SETTING Fertility clinics in Denmark. PATIENT(S) Eight hundred eighteen couples who were about to begin a new course of treatment. INTERVENTION(S) An FP str...

We study periodic-review inventory replenishment problems with fixed ordering costs, and show the optimality of (s, S) inventory replenishment policies. Inventory replenishment is instantaneous, i.e., the lead time is zero. We consider several sales mechanisms, e.g., auction mechanisms, name-your-own-price mechanisms, and multiple heterogeneous sales channels. We prove this result by showing th...