purpose: to investigate associations between computer use data and sleep quality among university students. materials and methods: this descriptive, cross-sectional study was performed on 312 students of tehran university of medical sciences, iran. data was collected using epworth sleepiness scale (ess), insomnia severity index (tsi), pittsburgh sleep quality index (psqi), and a background and ...

this study investigated the concentration/time dependent effects of nanosilver colloid on the motionparameters of the ejaculated ram spermatozoa in vitro. after incubation of sperm samples for 30, 60, 120 and 180 min in the presence of nanosilver colloid (0, 0.001, 0.01, 0.1, 1 and 10 ppm), the motion parameters were evaluated by computer assisted sperm analysis. there was a significant (p

During the last decade, learning scientists have developed technologies with animated pedagogical agents that interact with the student in natural language and other communication channels, such as facial expressions and gestures. These pedagogical agents model good learning strategies and coach the students in actively applying their knowledge. This chapter focuses on agent-based learning envi...

the aim of this research was to study those motivations underlying computer sport games in the youth. this study used a survey and cross – sectional method. the population consisted of 302 students of yazd university. the data were collected by the revised scale of computer sport games. results of the empirical test of the scale distributed among the participants in computer sport games showed ...

A mathematical method for calculation of the minimum cross-sectional area of a thickener is presented by obtaining minimum laboratory batch settling test data, a function, which is called settling function, is derived. This function is found to be in the form of a polynomial of third order. The settling function and mass flux relation are used for the design of thickener. The method predict...