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تعداد نتایج: 3298930 فیلتر نتایج به سال:
Although links between music training and cognitive abilities are relatively well-established, unresolved issues include the generality of the association, the direction of causation, and whether the association is mediated by executive function. Musically trained and untrained 9- to 12-year olds were compared on a measure of IQ and five measures of executive function. IQ and executive function...
In this paper we report on an ongoing statistical analysis of actual CCSN traffic data. The data consist of approximately 170 million signaling messages collected from a variety of different working CCS subnetworks. The key findings from our analysis concern: (1) the characteristics of both the telephone call arrival process and the signaling message arrival process, (2) the tail behavior of th...
در این مطالعه، جذب آلاینده no بر روی نانوبلورهای w8o12h16 و w8o36 با روش نظریه تابعی چگالی بررسی شده است. همه محاسبات با گوسین 9 و با استفاده از روش اونیوم دو لایه ای، برای نانوبلور w8o36 در سطح (oniom (b3lyp/lanl2dz:uff ، و برای نانوبلور w8o12h16 در سطح b3lyp/lanl2dz انجام شده است. ابتدا همه ساختارها به طور کامل بهینه شده و سپس مولکول آلاینده با جهت گیری های مختلف نسبت به سطح بهینه شد. جذب مول...
چکیده تمام فرآیندهای مربوط به احتراق سوخت و هوا موجب تشکیل اکسید نیتروژن (no) می گردد. اکسید نیتروژن یکی از مهمترین آلاینده های محیط زیست است که تلاشهای زیادی برای کاهش تشکیل و انتشار آن انجام شده است. متاسفانه تمامی این اقدام ها منجر به پایین آمدن بازده احتراقی میشود. از این رو تخمین دقیق اکسید های نیتروژن در فرآیندهای احتراقی فاکتور مهمی در طراحی محفظه های احتراقی می باشد و هدف از انجام این ...
We study a repeated game with asymmetric information about a dynamic state of nature. In the course of the game, the better informed player can communicate some or all of his information to the other. Our model covers costly and/or bounded communication. We characterize the set of equilibrium payoffs, and contrast these with the communication equilibrium payoffs, which by definition entail no c...
This proposal seeks to utilize analytics on student demographics and grade records in combination with data on their performance in the GenEd NMS class G131 “Oceans and Our Global Environment” to assess how performance in the class and its range of assignments may be related to specific student characteristics. The project is structured to examine such connections by testing six specific hypoth...
This paper identifies major future trends and driving factors and perspectives and challenges resulting from them for European agriculture and food sectors until the year 2020. The focus of the paper is an analysis of key driving forces and the provision of a well developed reference scenario under the assumption of continued CAP reform and taking into account the framework discussions in the D...
Political developments in Britain since 2001 provide reason to believe that the nature of tactical voting at the 2005 general election may have been different in character from that in other recent elections. This paper examines the changes in party preference structure and finds no sign of greater distance between Labour and the Liberal Democrats. Instead the most notable change is a collapse ...
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