The current study aimed to examine sociodemographic and clinical variables between washer and checker subgroups of obsessive compulsive disorder. Of 412 subjects seen during 1975-1984, there were 123 washers, 70 checkers and 89 washers and checkers (mixed group). Checkers were more likely to be single and male and have an earlier age of onset and… (More)
We consider a system of <i>N</i> parallel queues with unit exponential service rates and a single dispatcher where tasks arrive as a Poisson process of rate λ(<i>N</i>). When a task arrives, the dispatcher assigns it to a server with the shortest queue among <i>d</i>(<i>N</i>) ≤ <i>N</i> randomly selected servers. This load balancing policy is… (More)
The k-section width and the Max-Cut for the configuration model are shown to exhibit phase transitions according to the values of certain parameters of the asymptotic degree distribution. These transitions mirror those observed on Erd˝ os-Rényi random graphs, established by Luczak and McDiarmid (2001), and Coppersmith et al. (2004), respectively.
Traditionally, reconfiguration problems ask the question whether a given solution of an optimization problem can be transformed to a target solution in a sequence of small steps that preserve feasibility of the intermediate solutions. In this paper, rather than asking this question from an algorithmic perspective, we analyze the combinatorial structure… (More)