service oriented enterprises (soes) are subject to constant change and variation. in this paper, the changes are considered from an economic perspective based on service culture notion. once a change is implemented, the costs of some member services may increase, whereas the costs of some other services may reduce. we construct a game theoretic model trying to capture the possible conflicting i...

promoting productivity is one of the goals of usinginformation technology in organizations. the purpose of this research isexamining the impact of it on organizational productivity andrecognizing its mechanisms based on process-oriented approach. for thisend, by reviewing the literature of the subject a number of impacts of iton organizational processes were identified. then, through interviews...

Step-indexed semantic models of types were proposed as an alternative to the purely syntactic proofs of type safety using subject-reduction. This thesis introduces a step-indexed model for the functional object calculus, and uses it to prove the soundness of an expressive type system with object types, subtyping, recursive and bounded quantified types.

Service engineering and service-oriented architecture as an integration and platform technology is a recent approach to software systems integration. Software quality aspects such as performance are of central importance for the integration of heterogeneous, distributed service-based systems. Empirical performance evaluation is a process of measuring and calculating performance metrics of the i...

the aim of this study was to compare the effect of self-control, frequent and reduced feedback of kr on children's learning skill of throw targeting in aleshtar city. for this purpose, 60 subjects were selected and assigned through step-by-step random method to three groups of self-control, frequent, and reduced. they performed the task of targeting through throwing in two steps of acquisi...