this paper discusses the number of scholars and their scientific interests in the reign of bu-veyhid. buveyhid the most important iranian-shi ‘it dynasties appeared in the early era of islam. they were so powerful that the abbasid caliphs had to obey them. according to their shi ‘it religion, they practiced the idea of democracy and all sects were free in their reign. according to the survey mo...

This paper presents the concept of alternative presentation components in the context of mobile visualization. A criterion for distinguishing between media with respect to their preparation for the presentation of information is introduced and the conventional visualization pipeline is extended to accommodate the needs of mobile information presentation. The concept is illustrated by some examp...

It is important for task-based learning and teaching research to focus on academic content tasks that involve form and meaning, language and content, and academic discourse and disciplinary knowledge. This is needed to address problems such as low academic achievement by English language learners. We argue that the SFL approach to language, particularly in the area of ‘field’ and ideational mea...

scientific communications network is presented in, sociology of science. and we can use steven's evaluative bibliometrics to map it. in citation network approach, scientist's communication behavior is predicted through their citation behavior. in this paper, first, concepts such as sociology of science, scientific community, scientific communications and its kinds are described. two k...