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Species tree estimation is challenging in the presence of incomplete lineage sorting (ILS), which can make gene trees different from the species tree. Because ILS is expected to occur and the standard concatenation approach can return incorrect trees with high support in the presence of ILS, "coalescent-based" summary methods (which first estimate gene(More)
ABSTRACT An increase in the use of simulation as a modeling and analysis tool has resulted in a growing number of simulation software products in the market. Companies are seeking advice about the desirable features of software for manufacturing simulation, depending on the purpose of its use. Because of this, the importance of an adequate approach to(More)
The perfect matching problem has a randomized NC algorithm, using the celebrated Isolation Lemma of Mulmuley, Vazirani and Vazirani. The Isolation Lemma states that giving a random weight assignment to the edges of a graph, ensures that it has a unique minimum weight perfect matching, with a good probability. We derandomize this lemma for K3,3-free and(More)
Validation of configuration and security compliance at the time of creating new service is an important part of service management process and governance in most IT delivery organizations. It is performed to ensure that security risks, governance controls and vulnerabilities are proactively managed through the lifecycle of the services, and to guarantee(More)
In a period of continuous change in global business environment, organizations, large and small, are finding it increasingly difficult to deal with, and adjust to the demands for such change. Simulation is a powerful tool for allowing designers imagines new systems and enabling them to both quantify and observe behavior. Currently the market offers a(More)
Applying patches to operating systems, middleware, and applications is considered a major IT pain point due to several reasons. The operating systems and software are of myriad types, there is interdependency among the updates, operating system, and applications, there is lack of standardization among different enterprise customers, and finally testing the(More)
In a period of continuous change in global business environment, organizations, large and small, are finding it increasingly difficult to deal with, and adjust to the demands for such change. Simulation is a powerful tool for allowing designers imagine new systems and enabling them to both quantify and observe behavior. Currently the market offers a variety(More)
BACKGROUND Stenotrophomonas maltophilia infection is gaining importance as an important cause of nosocomial pneumonia due to its characteristic inherent resistance to many broad- spectrum antibiotics. In this study we evaluated the demographic, clinical and microbiological profile of patients with lower respiratory tract infection due to Stenotrophomonas(More)