A new method has been developed within the framework of density functional theory to aid in the study of the dielectric properties of multi-component systems, with explicit treatment of surface and interface effects. Specially, we have determined the position dependent dielectric constant profiles for Si–SiO2 and SiO2polymer systems.We find that at regions close to surfaces and interfaces, the ...

This article hopes to make a contribution to the growing body of work on the paradigmatic description of context of situation. Having considered the limited achievements of earlier work on context, I offer a fairly detailed account of what is entailed in producing a consistent and precise description of a linguistic category by using the principles and methods of the paradigmatic mode of descri...

theories are conceptual frames to study social events. they are discussed in different fields in universities and have an important role in scientific investigation of different topics. various theories are set forth in international relations as an academic field that studies war. this quarterly revises iran-iraq war from these theories' point of view.

procrastination is one of the effective variablesin students' educational performance, therefore making it necessary to study it thoroughly. this study aims to investigate the effectiveness of cognitive-behavioral trainings in decreasing high school students'. this research employed a semi-experimental design with pre-test, post-test and control group. to fulfill 34 first year high sc...

Summer training in aging research for medical students is a strategy for improving the pipeline of medical students into research careers in aging and clinical care of older adults. Johns Hopkins University has been offering medical students a summer experience of mentored research, research training, and clinical shadowing since 1994. Long-term outcomes of this program have not been described....

Objective: There are several theories proposed on the career development and researchers have classified these theories in different categories. Career-related cognitive theory is one of the latest categories including two theories: social cognitive theory of career development and cognitive information processing. The current study seeks to compare these two cognitive theories of career develo...