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any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...
enterprise resource planning system is a software package with extensive application which integrates all organizational functions in a single system. to implement an erp project in an organization successfully, selecting an appropriate system considering effective factors is necessary. the purpose of this study is to identify effective factors in selecting erp. this study has used expert choic...
hedging is a multi-purpose rhetorical strategy which is usually used in scientific arguments to secure ratification of claims, reduce the risk of negation, avoid conflict, manage disagreement and leave room for the audience to assess presented information. hedges are frequently used in research articles to mitigate the findings of research endeavors. the present research aims to investigate the...
rising global financial crisis and the necessities of facing its negative effects and taking advantage of opportunities rendered by crisis, should be noticed by economic authorities. in order to achieve above-mentioned purpose, this essay, in addition to present roots of financial crisis in the world economy, also will consider the crisis from theoric and economic aspects. considering dimension...
why some learners are willing to communicate in english, concurrently others are not, has been an intensive investigation in l2 education. willingness to communicate (wtc) proposed as initiating to communicate while given a choice has recently played a crucial role in l2 learning. it was hypothesized that wtc would be associated with language learning orientations (llos) as well as social suppo...
nowadays enhancing critical thinking in learners is considered one of the foreign language teachers’ tasks due to its high position in foreign language classrooms. when it comes to selecting materials for language classrooms, there are obviously some criteria that teachers should apply. the present study aimed at a critical thinking based analysis of ten picture story books and ten folktales th...
promoting productivity is one of the goals of usinginformation technology in organizations. the purpose of this research isexamining the impact of it on organizational productivity andrecognizing its mechanisms based on process-oriented approach. for thisend, by reviewing the literature of the subject a number of impacts of iton organizational processes were identified. then, through interviews...
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