This article poses the following problem: Does there exist a probability distribution over subsets of finite partially ordered set (poset), such that constraints involving marginal probabilities poset’s elements and maximal chains is satisfied? We present combinatorial algorithm to positively resolve this question. The can be implemented in polynomial time special case where chain are affine fu...

The expanse of U.S. transportation systems has helped to facilitate persistent national economic growth, its ease of access and reliability vital to the plethora of users who utilize daily the established infrastructure. Recent events have shown cause for concern, however, as the vulnerability inherent in such transportation systems has been exploited by the calculated attacks of highly motivat...

Goal recognition, which is the task of inferring an agent’s goals given some or all of the agent’s observed actions, is one of the important approaches in bridging the gap between the observation and decision making within an observe-orient-decide-act cycle. Unfortunately, few research focuses on how to improve the utilization of knowledge produced by a goal recognition system. In this work, we...

In this study we investigate the vulnerability of road networks to interdictions. We consider that an intentional attacker wants to maximize the congestion level on the network by interdicting some links of the network. The drivers are assumed to be selfish and always choose the route that minimizes the individual travel cost. In this case, network traffic flow follows user equilibrium (UE) tra...

The interdiction of nuclear materials during illegal transportation requires both detection of radiation and identification of radionuclides in order to distinguish among the various categories of nuclides and their implied threat. Interdiction regimes, based upon available technologies, were developed rapidly after the tragic events of 9-11. In general, a low resolution or "no-resolution" port...

background epstein barr virus (ebv) is one of the most common viral infections in human population. ebv has a significant role in pathogenesis of hodgkin's lymphoma, burkitt's lymphoma and nasopharyngeal carcinoma. the role of ebv in non-hodgkin’s lymphoma, diffuse large b cell (nhl - dlbl) in the head and neck is controversial. objectives the purpose of this study is to find out the ...