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تعداد نتایج: 6394636 فیلتر نتایج به سال:
the present research aims to investigate and rank which affect and re affected by employees’ psychological empowerment in order to help organizations and their employees to be more committed to their jobs by accessing resources and feeling control and ownership and use initiative in their works in order to do works well so that their effectiveness and efficiency within organization will be impr...
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...
this thesis is based upon the works of samuel beckett. one of the greatest writers of contemporary literature. here, i have tried to focus on one of the main themes in becketts works: the search for the real "me" or the real self, which is not only a problem to be solved for beckett man but also for each of us. i have tried to show becketts techniques in approaching this unattainable goal, base...
textbooks play a crucial role in language learning classrooms. the problem is that among the great quantity of available textbooks on the market which one is appropriate for a specific classroom and a group of learners. in order to evaluate elt textbooks, theorists and writers have offered different kinds of evaluative frameworks based on a number of principles and criteria. this study evaluate...
A signed graph is a graph whose edges are given ±1 weights. In such a graph, the sign of a cycle is the product of the signs of its edges. A signed graph is called balanced if its adjacency matrix is similar to the adjacency matrix of an unsigned graph via conjugation by a diagonal ±1 matrix. For a signed graph Σ on n vertices, its exterior kth power, where k = 1, . . . , n−1, is a graph ∧k Σ w...
BACKGROUND/RATIONALE Episodic memory loss is a hall-mark of Alzheimer's disease (AD), with recall of recent events becoming progressively difficult. A commonly used tool, the recollection of US presidents, was assessed in evaluating episodic versus semantic memory loss among AD patients compared with spouse controls. METHODS A total of 36 patients (12 men, 24 women) with possible or probable ...
The link of a vertex v of a graph G is the subgraph induced by all vertices adjacent to U. If all the links of G are isomorphic to L, then G has constant link and L is called a link graph. We investigate the trees of order p < 9 to see which are link graphs. Group theoretic methods are used to obtain constructions of graphs G with constant link L for certain trees L. Necessary conditions are de...
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