The world is looking towards producing products which consume less power without compromising on quality of life. The increase in use of refrigeration and air conditioning appliances are contributing to global warming. The world wide temperatures are shooting up at an increasing rate. This paper presents a design of roll bond evaporator as the heat exchanger to provide cooling in room air condi...

The goal of this study was to examine the mechanisms underlying associations between neighborhood socioeconomic advantage and children's achievement trajectories between ages 54 months and 15 years. Results of hierarchical linear growth models based on a diverse sample of 1,364 children indicate that neighborhood socioeconomic advantage was nonlinearly associated with youths' initial vocabulary...

Emphasizing the developmental need for positive peer relationships, in this study the authors tested a social-contextual view of the mechanisms and processes by which early adolescents' achievement and peer relationships may be promoted simultaneously. Meta-analysis was used to review 148 independent studies comparing the relative effectiveness of cooperative, competitive, and individualistic g...

In the present work, the relationship between attachment and exploration in adulthood is examined from both theoretical and empirical standpoints. Theoretically, attachment theory's exploration system is linked to R. W. White's (1959) concept of effectance motivation, and to the motive and goals constructs that are central to the achievement motivation literature. Empirically, 4 studies are pre...

the goal for this research is to study the relationship between locus of control and achievement motivation with test anxiety among the master students of the azad university, olum tahghighat unit in 2010-2011. considering the morgan table the number of sample individuals for this research was 370. also cluster double sampling method was used. for collection of data three questions and theories...

The purpose of this study was to examine students’ academic self-concept and social presence in face-toface (FTF) and online version of the same course, and to examine the effects of these two variables on student learning achievement and satisfaction. A total of 257 undergraduate students enrolled in a digital design course were randomly assigned to either of two treatments: one offered FTF in...

most universities across iran tend to develop english tests for placement, exit, achievement, and other purposes. examining the various features of such tests is imperative for making informed decisions about learners’ achievement level. the present study examined the features of a university-wide administered english language achievement test at iran university of science and technology (iust)...

Self-concept is the cognitive aspect of self and generally refers to the totality of a complex, organized and dynamic system of learned beliefs, attitudes and opinions that each person holds to be true about his or her personal existence. Self-concept and achievement are dynamically interactive and reciprocal. It is found that certain psychological factors like self-concept plays a major role i...