نتایج جستجو برای: free access
تعداد نتایج: 822449 فیلتر نتایج به سال:
disclosure of classified public interest information has become one of the major legal challenges in recent years. in the past decades the conflict between the right of people to receive information and principle of sovereignty within the framework of traditional media (direct broadcast satellite) resolved in favor of principle of free flow of information and the said conflict was replaced by ...
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...
Since 1998 a lots of European Internet Service Providers (ISP) started to provide internet access freely. Why does a profit maximizing operator adopts this pricing policy? A consumer who wants to surf on the net needs to buy two services: the access from the ISP and the connection from the Telephone Operator. Since the two services are complements, the price of one service creates a negative ex...
We propose a topology-dependent transmission scheduling algorithm that automatically schedules collision-free channel access at each node without repetitious contention phase(s) once all nodes know who are their two-hop neighbors. The bandwidth of the channel is completely devoted for data traffic, except for synchronization and occasional neighbor updates. Unique qualitative features of the pr...
Free access to scientific papers: towards an improvement of Open Access policies in opening archives
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