Abstract Many complex systems exhibit self-organizing criticality (SOC). In fact, there is a consensus that the Earth’s crust SOC system. The Olami, Feder and Christensen (OFC) spring-block model non-conservative used successfully to simulate dynamics of seismic faults. this system coupled differential equations representing mapped cellular automaton. work we include idea asperity, which an imp...

BACKGROUND This study aimed to investigate whether repetitive optimizing left ventricular pacing configurations (LVPCs) with quadripolar leads (QUAD) can improve response to cardiac resynchronization therapy (CRT). METHODS Fifty-two eligible patients were enrolled and 1:1 randomized to either the quadripolar LV leads (QUAD) group or the conventional bipolar leads (CONV) group. In the QUAD gro...

We present a parallel Poisson solver on distributed computing environments. In the solver, the parallel implementation of the Fast Multipole Method (FMM) is designed to minimize amount of data communication and the number of data transfers and synchronizations. The experimental results show linear speedup, good load balancing, and reasonable performance under failure and demonstrate the viabili...

In this paper a number of 4-bit, 8-operation arithmetic logic units (ALUs) are designed using the delayinsensitive NULL Convention Logic (NCL) paradigm, and are characterized in terms of speed and area. Both dualrail and quad-rail, pipelined and non-pipelined versions are developed, and the tradeoffs and design considerations for each are discussed. Comparing the various architectures shows tha...

In this paper, a new approach (scheme) to the analysis of quad-trees in the discrete wavelet spectrum of a digital image is proposed. During the pre-scanning phase, the proposed scheme generates problem-oriented binary codes for the whole set of quad-tree roots (wavelet coefficients) and thereby accumulates information on the significance of respective descendants (wavelet coefficients comprisi...

In this paper we introduce a new subdivision operator that unifies triangular and quadrilateral subdivision schemes. Designers often want the added flexibility of having both quads and triangles in their models. It is also well known that triangle meshes generate poor limit surfaces when using a quad scheme, while quad-only meshes behave poorly with triangular schemes. Our new scheme is a gener...

Many reasoning problems in Knowledge Representation can be reduced to the satisfiability problem of propositional logic. Since Cook proved that satisfiability is NP-Complete, several classes of propositional formulas have been identified for which satisfiability is polynomially solvable. These polynomial classes form the basis of several tractable knowledge representation systems, for example, ...