Positive state-space models describe large classes of processes in econometry, epidemiology, biology, ecology, chemistry, hydraulics and logistics. These models satisfy strict algebraic conditions that can be directly fulfilled when the models are obtained by means of traditional modeling techniques by selecting the state variables in a “natural” way i.e. by associating a well-defined physical ...

Although nogood learning in CSPs and clause learning in SAT are formally equivalent, nogood learning has not been as successful a technique in CSP solvers as clause learning has been for SAT solvers. We show that part of the reason for this discrepancy is that nogoods in CSPs (as standardly defined) are too restrictive. In this paper we demonstrate that these restrictions can be lifted so that ...

In this paper, we study a particular type of convex fractional programming problem and its dual under fuzzy environment. We present appropriate duality results for a fuzzy environment using aspiration level approach. This study use linear membership functions to represent fulfillment of the decision maker’s degree of satisfaction.

The authors investigated 2 broad issues: (a) across- and within-individual relationships between mood and job satisfaction and (b) spillover in moods experienced at work and at home. Using an experience-sampling methodology, they collected multisource data from a sample of 74 working individuals. Multilevel results revealed that job satisfaction affected positive mood after work and that the sp...

purpose: body image is a person’s body shape in his/her mind. negative body image is associated   with low self-esteem, depression, eating disorder and body dimorphic disorder. the aim of   this study was to investigate the role of body image on sexual performance of married women   nurses in tehran.   materials and methods: in this correlation study, 200 married women nurses working in public ...

the aim of this study was to evaluate the satisfaction rate of hospital managerial/clinical teams (hmcts) including principles (chief executives), managers, supervisor pharmacists and head nurses from services presented by private sectors directing 10 pharmacy departments in hospitals affiliated to shahid beheshti university of medical sciences.this study is an observational and descriptive stu...

The complexity of any optimisation problem depends critically on the form of the objective function. Valued constraint satisfaction problems are discrete optimisation problems where the function to be minimised is given as a sum of cost functions defined on specified subsets of variables. These cost functions are chosen from some fixed set of available cost functions, known as a valued constrai...