Stress shadowing affects the simultaneous propagation of fractures from multiple perforation clusters. Employing uniform parameters for all clusters cause unbalanced growth fractures, which arouses demand optimizing non-uniform parameters. An optimization workflow combining a fracture model and particle swarm method (PSO) is proposed multi-cluster fracturing in this study. The considers couplin...

In distributed computing the recent paradigm shift from centrallyowned clusters to organizationally distributed computational grids introduces a number of new challenges in resource management and scheduling. In this work, we study the problem of Selfish Load Balancing which extends the well-known Load Balancing (LB) problem to scenarios in which each processor is concerned only with the perfor...

Chandra X-ray Observatory has revealed X-ray cavities in many nearby cooling flow clusters. The cavities trace feedback from the central active galactic nulceus (AGN) on the intracluster medium (ICM), an important ingredient in stabilizing cooling flows and in the process of galaxy formation and evolution. But, the prevalence and duty cycle of such AGN outbursts is not well understood. To this ...

Ideally psychologists strive to act ethically within their professional roles. However, they are unlikely to achieve the highest standards of ethical behavior if they become overly legalistic or if they engage in behaviors that can be virtuous in a personal context but harmful in a professional relationship. Such problems may arise when some justify their less-than-optimal behavior based upon a...

We introduce a notion of cross-flips: local moves that transform a balanced (i.e., properly (d + 1)-colored) triangulation of a combinatorial d-manifold into another balanced triangulation. These moves form a natural analog of bistellar flips (also known as Pachner moves). Specifically, we establish the following theorem: any two balanced triangulations of a closed combinatorial d-manifold can ...

An oriented hypergraph is an oriented incidence structure that extends the concept of a signed graph. We introduce hypergraphic structures and techniques central to the extension of the circuit classification of signed graphs to oriented hypergraphs. Oriented hypergraphs are further decomposed into three families – balanced, balanceable, and unbalanceable – and we obtain a complete classificati...

The characteristics of electronic states of Cd-vacancies in CdTe, an important semiconductor for various technological applications, are under debate both from theoretical and experimental points of view. Experimentally, the Cd-vacancy in its negative charge state is found to have C3v symmetry and a (-1/-2) transition level at 0.4 eV. Our first principles density functional calculations with hy...