this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...

power transformers are important equipments in power systems. thus there is a large number of researches devoted of power transformers. however, there is still a demand for future investigations, especially in the field of diagnosis of transformer failures. in order to fulfill the demand, the first part reports a study case in which four main types of failures on the active part are investigate...

Ḥadīth is considering as the most important source to know the religion of Islam after the Quran. Therefore, studying Ḥadīths is necessary to know Islam teachings in respect of beauty, art and recognizing art condition in the early Islamic period. However, little attention is paid to Ḥadīth in art studies. For having the most out of Ḥadīths, obstacles and restrictions confronting the art resear...

The curator, by changes that has seen from its traditional functions towards new models, is now an omnipresent figure in the art world and is closely related to how the arts are showcased. Accordingly, it can have a direct and effective impact on raising awareness about an artistic flow and how it is presented. By this reason, this study explores the relationship between the curator’s activity ...

abstract ion selective electrodes (ises) are electrochemical sensors that respond selectivity to the activity of ionic species. an ion-selective electrode is an electrochemical device that uses a thin selective membrane or film as the recognition element, and is an electrochemical half-cell equivalent to other half-cells of the zeroth (inert metal in a redox electrolyte). in common methods o...

the thesis has been arranged into five chapters and mainly concerned with the baer-invariant of groups which is the generalization of the schur-multiplier with respect to the variety of groups. chapter one is devoted to collect some notation and background information which are needed in the next chapters. its also contains some important statements which will be generalized in this thesis. cha...

The main objective of this essay is to re-examine the nature of sculpture and its importance among arts via retrieving and studying the relatively neglected importance of touch in the experience of this art. This objective is pursued according to eighteenth-century German philosopher, Johann Gottfried Herder, by focusing on his Sculpture: Some Observations on Shape and Form from Pygmalion’s Cre...

magnetic resonance imaging (mri) is a notable medical imaging technique that makes of phenomenon of nuclear magnetic resonance. because of the resolution and the technology being harmless, mri has considered as the most desirable imaging technique in clinical applications. the visual quality of mri plays an important role in accuracy of medical delineations that can be seriously degraded by exi...