in this thesis, first the notion of weak mutual associativity (w.m.a.) and the necessary and sufficient condition for a $(l,gamma)$-associated hypersemigroup $(h, ast)$ derived from some family of $lesssim$-preordered semigroups to be a hypergroup, are given. second, by proving the fact that the concrete categories, semihypergroups and hypergroups have not free objects we will introduce t...

 In this paper, a new model has been introduced for scheduling of a multi-microgrid consisting of low voltage microgrids, distributed generation resources and interruptible loads. In this model, system operator runs its internal market, then by using the results and modeling the upstream market, the internal market is finally cleared based on nodal prices and considering network losses. Fu...

Introduction: One of the characteristics of the higher education system is social responsibility. In the current situation, family members of higher education and other social actors expect the university to alleviate the pain and suffering caused by the Coronavirus Panidemic by acting responsibly and using the knowledge and technologies at its disposal. Th purpose of this study is to provide a...

Introduction: One of the characteristics of the higher education system is social responsibility. In the current situation, family members of higher education and other social actors expect the university to alleviate the pain and suffering caused by the Coronavirus Panidemic by acting responsibly and using the knowledge and technologies at its disposal. Th purpose of this study is to provide a...

vocabulary as a major component of language learning has been the object of numerous studies each of which has its own contribution to the field. finding the best way of learning the words deeply and extensively is the common objective of most of those studies. however, one effective way for achieving this goal is somehow neglected in the field. using a variety of activities such as games can r...

plagiarism in esl/efl learning contexts has been established as a dynamic and multi-layered phenomenon and has become a topic engaging many researchers in a heated debate in recent years. comparisons of student-generated texts with their source texts have shown that students rely on source texts in their writings and copying is a major strategy used by both l1 and l2 writers. in our country a...