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The article discribe methods of verifing the conditions of access in computer systems based on Take-Grant protection model.
Weighted committee games generalize n-player simple voting games to m ≥ 3 alternatives. The committee’s aggregation rule treats votes anonymously but parties, shareholders, members of supranational organizations, etc. differ in their numbers of votes. Infinitely many vote distributions induce only finitely many distinct mappings from preference profiles to winners, i.e., non-equivalent committe...
A growing body of evidence shows that individuals respond not only to the pure economic incentives they face but also to the manner in which such incentives are presented and framed. Such behavior appears to be particularly relevant in analysis of saving choices. Brigitte C. Madrian and Dennis F. Shea (2001), for example, show that changing the default rules for 401(k) enrollment has a signific...
BACKGROUND Data on the epidemiology of viral-associated acute lower respiratory tract infection (LRTI) from high HIV prevalence settings are limited. We aimed to describe LRTI hospitalizations among South African children aged <5 years. METHODS We prospectively enrolled hospitalized children with physician-diagnosed LRTI from 5 sites in 4 provinces from 2009 to 2012. Using polymerase chain re...
abstract chickpea is weak in competition of weeds that damages to it at between 40 t0 60 percent. kermanshah province is one of the most important region for chickpea fields in iran. for these reosons, weed management is necessary in this crop. in order to evaluate of herbicides and stubble control on broad leave weeds control in chickpea. experiment was conducted in agricultural research stat...
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