make or buy decision is one of the main areas of decision making for managers. transaction cost economics (tce), as an influential economic approach to the theory of the firm, tries to put forward a theoretical framework for this important decision. from tce perspective, the greater the asset specificity, the more the behavioral uncertainty and the more the transaction frequency, the more will ...

backgroundbody image is a determinant of individual attractiveness and physical activity among the young people. this study was aimed to assess the association of trans-theoretical model based exercise behavior change with body image evaluation among the female iranian students.materials and methodsthis cross-sectional study was conducted in sanandaj city, iran in 2016. using multistage samplin...

background : the aim of training midwifery student is to increasing scientific and practical abilities in trainees in order to present caring health services and so the evaluation tools of these abilities has a great importance. for evaluating considered tools and for the reason of midwifery theoretical special courses importance this study tries to evaluate content validity, criterion validity...

Wireless sensor networks are comprised of a vast number of ultra-small autonomous computing, communication and sensing devices, with restricted energy and computing capabilities, that co-operate to accomplish a large sensing task. Such networks can be very useful in practice, e.g. in the local monitoring of ambient conditions and reporting them to a control center. In this paper we propose a ne...