The common practice in the MPEG video traffic modelling is to split video sequence into I, P and B subsequences and to model the traffic (generated by each subsequence) separately. This frame-oriented decomposition both allows avoiding non-homogeneity of modelling data and lead to linearisation of MPEG video traffic characteristics. In this paper, the low-complexity regression model of an MPEG-...

Health economics is a relatively new but growing field within the discipline of economics and is concerned with making the best use of scarce resources. Early health economic estimates of new medical devices, in particular, can assist producers of health technology in making appropriate product design and investment decisions. It allows companies to understand their likely market and possible r...

here‎, ‎we aim to develop a new algorithm for solving a multiobjective linear programming problem‎. ‎the algorithm is to obtain a solution which approximately meets the decision maker's preferences‎. ‎it is proved that the proposed algorithm always converges to a weak efficient solution and at times converges to an efficient solution‎. ‎numerical examples and a simulation study are used to...

most of authors (1-7) have used discontinious methods based on trial and error procedures for determination of optimum distribution of kh and ?h. optimal control theory has not been used for gas reservoirs. hence, in this paper optimal control theory is utilized for mathematical simulation of gas reservoir and optimum distributions of kh and ?h are presented. one of themain advantages of this n...

this paper presents a new control structure to reduce torque ripple in switched reluctance motor. although srm possesses many advantages in motor structure, it suers from large torque ripple that causes some problems such as vibration and acoustic noise. in this paper another control loop is added and torque ripple is de ned as an objective function. by using fuzzy sliding mode strategy, the dc...

based on the notion of micro-structure in linear elasticity presented by mindlin, a newextended continuum mechanics (ecm) formulation is derived which can be utilized to model thematerial behavior at atomic scale. an attempt has been made to present a formulation capable ofproducing the molecular dynamics (md) simulation results with less computational effort. to thisend, some new kinematical v...

In research as well as in practice, process models are an expatiated element of innovation management. They fulfill different tasks. In practice, for instance, process models are used as a management tool to standardize development activities. Researchers try to identify activities to be found in every product development process. The design of the different process models is as manifold as the...

The static and dynamic structure of liquid lithium (470 K) in a computer experiment were investigated using a new type of interaction: the pair potential is constructed from an ab initio molecular dynamics method which makes the effective interionic potential self-consistent with the radial distribution functions on the basis of the quantd hypemetted-chain theory. Comparisons of the new calcula...

The need to bring innovative, high-quality products to market faster is driving the use of models during the design and realization process. Model-based design provides efficiencies in product development that enable companies to deliver products on time, remain within budget, and fulfill initial requirements. The latest model-based design tools can also generate prototype and production code f...

This paper presents a retrospective on the evolution of modeling and simulation (M&S) as they relate to multiphysics systems. The context space of M&S is defined in terms of number of fields, number of domains, length scale, and computational technologies involved. Representative past and the present efforts on each one of these contexts and some of their combinations are described and their re...