We study the accuracy of the divide-and-conquer method for electronic structure calculations. The analysis is conducted for a prototypical subdomain problem in the method. We prove that the pointwise difference between electron densities of the global system and the subsystem decays exponentially as a function of the distance away from the boundary of the subsystem, under the gap assumption of ...

Abstract This paper deals with the availability analysis of a complex system that consists of two subsystems namely subsystem 1 and subsystem 2.Subsystem 1 is working under k-out of –n good policy and subsystem 2 has two identical units in parallel configuration. Controller for proper functioning controls the subsystems 1. All failure rates are constant and follow exponential distribution but r...

We investigate the existence, convergence and uniqueness of modified general curvature flow (MGCF) of convex hypersurfaces in hyperbolic space with a prescribed asymptotic boundary.

Today, multimedia teaching has been extensive used in teaching. Multimedia teaching has the advantages that traditional teaching model can’t compare with. But we should avoid the disadvantages as well. Based on analysis of the disadvantages of multimedia teaching, we made some suggestions on applying it in teaching in this paper.

IP multimedia subsystem (IMS) represents a standardized next-generation reference system to provide an overlay global open service delivery platform (SDP) that enables provisioning of converged multimedia

Communication subsystems are used in high-performance parallel computing systems to abstract the lower network layer. By using a communication subsystem, an upper middleware library or runtime system can be more easily ported to different interconnects. By abstracting the network layer, however, the designer typically makes the communication subsystem more specialized for that particular middle...

• Sustainability: An agent must attend to its essential needs, such as hunger and thirst, and also know to avoid serious physical dangers, and so on (Toates 1986). • Purposefulness: The action of an agent must be chosen in accordance with some criteria, instead of completely randomly (Hull 1943, Anderson 1993), and those criteria are related to enhancing sustainability of an agent (Toates 1986)...

QoS has been proposed in storage subsystem man agement towards e ective disk space utilization and request servicing We present a QoS based stor age model for e ective user negotiation in terms of scheduling and the number of storage devices A sim ulation model is developed based on an available disk simulator which is experimented under arti cial re quest workload towards better system s respo...

This memo discusses architectural implications of IP anycast and provides some historical analysis of anycast use by various IETF protocols.

Much scholarly attention has been given to the English writing and publishing practices of the academics in non-Anglophone countries, but studies on such practices in the humanities and social sciences (HSS) have in general been limited. The case of Mainland Chinese HSS academics is potentially interesting. On the one hand, international publications in these disciplines have been on the increa...