ant colony optimisation (aco) algorithm and adaptive refinement mechanism are used in this paper for solution of optimization problems. many of the real engineering problems are، however، of continuous nature and finding their solution by discrete ant based algorithms requires discretisation of the decision variables in which affected the convergence and performance of the algorithm. in this pa...

this paper proposes a novel hybrid algorithm namely apso-bfo which combines merits of bacterial foraging optimization (bfo) algorithm and adaptive particle swarm optimization (apso) algorithm to determine the optimal pid parameters for control of nonlinear systems. to balance between exploration and exploitation, the proposed hybrid algorithm accomplishes global search over the whole search spa...

one of the problems associated with adaptive fir filters in the identification of systems with long impulse responses, is their excessive computational complexity. recently a new kind of adaptive filters, based on three-level clipping of the input signal has been presented for reduction of their computational complexity. in this paper, a theoretical analysis of the steady-state misalignment of ...

The paper describes recent progress in research on database system support for executing multimedia presentations. It proposes the general concept of Reactive Playout Management to adjust multimedia presentations. This adjustment can be required due to performance fluctuations as in the absence of end-to-end quality of service guarantees, cost constraints specified by the user, and other reason...

This paper deals with the use of proxy servers to cache streaming video objects. In this paper, we describe a streaming architecture for layered video objects that uses the concept of layered caching. A new replacement policy is proposed, which is based on the playout time of a video object at the client. We define a new quality metric that takes the number of layers as well as the importance o...

some applications are critical and must designed Fault Tolerant System. Usually Voting Algorithm is one of the principle elements of a Fault Tolerant System. Two kinds of voting algorithm are used in most applications, they are majority voting algorithm and weighted average algorithm these algorithms have some problems. Majority confronts with the problem of threshold limits and voter of weight...

some applications are critical and must designed Fault Tolerant System. Usually Voting Algorithm is one of the principle elements of a Fault Tolerant System. Two kinds of voting algorithm are used in most applications, they are majority voting algorithm and weighted average algorithm these algorithms have some problems. Majority confronts with the problem of threshold limits and voter of weight...

Luigi Atzori MCLab, Department of Electronic Engineering University of Cagliari Cagliari 09123 Italy [email protected] In the last few years, Voice over IP (VoIP) providers have been a strongly growth compared with traditional voice service operators. The main motivations are the low-cost of the packetbased technologies and the reliability of the current (wired) IP network. Nowadays a new ...

We present a new generator based framework approach. The framework is part of the PLAYOUT design system. After developing this design system in a conventional fashion and performing several large hierarchical designs, we observed that it is necessary to design our own framework. We extended the PLAYOUT system by an adequate environment that covers data management, design flow management, and th...