In this article, we propose an adaptive grid based on mesh equidistribution principle for two-parameter convection-diffusion boundary value problems with continuous and discontinuous data. A numerical algorithm based on an upwind finite difference operator and an appropriate adaptive grid is constructed. Truncation errors are derived for both continuous and discontinuous problems. Parameter uni...

www.grassvalley.com Choices for a playout solution have usually fallen between implementing a traditional automation system that links together a complex collection of many devices from different providers, or a basic single-channel box consisting of a standard PC with cards. There is now a viable alternative that brings a file-based, networked, and scalable approach to the task of well managed...

Operation of multi-reservoir systems is known as complicated and often large-scale optimization problems. The problems, because of broad search space, nonlinear relationships, correlation of several variables, as well as problem uncertainty, are difficult requiring powerful algorithms with specific capabilities to be solved. In the present study a Self-adaptive version of Melody Search algorith...

Adaptive networks include a set of nodes with adaptation and learning abilities for modeling various types of self-organized and complex activities encountered in the real world. This paper presents the effect of heterogeneously distributed incremental LMS algorithm with ideal links on the quality of unknown parameter estimation. In heterogeneous adaptive networks, a fraction of the nodes, defi...

This paper presents an algorithm for adaptive determination of the dead timeduring transient arcing faults and blocking automatic reclosing during permanent faults onoverhead transmission lines. The discrimination between transient and permanent faults ismade by the zero sequence voltage measured at the relay point. If the fault is recognised asan arcing one, then the third harmonic of the zero...

Many distributed audio and video applications exhibit robustness in adapting to fluctuations in the delivered quality of service (QoS). By trading off temporal and spatial quality to available bandwidth, or manipulating the playout time of continuous media in response to variation in delay, audio and video flows can be kept meaningful at the playout device with minimal perceptual distortion. In...

human language, over its evolutionary history, has emerged as one of the fundamental defining characteristic of the modern man. however, this milestone evolutionary process through natural selection has not left any ’linguistic fossils’ that may enable us to trace back the actual course of development of language and its establishment in human societies. lacking analytical tools to fathom the cr...

this paper presents a novel indirect adaptive power system stabilizer (pss) via a developed synergetic control methodology and fuzzy systems. fuzzy system is utilized in an adaptive scheme to estimate the system using a nonlinear model. the synergetic control guarantees robustness of the controller and makes the controller easy to implement because of using a chatter free continuous control law...

In this paper, we propose a robust delay estimation scheme for Internet multimedia applications. The proposed scheme adopts an autoregressive (AR) model for the delay process. The adopted AR model is a natural generalization of the Jacobson’s algorithm in TCP retransmission timeout (RTO) estimation. However, unlike fixed parameter values in the Jacobson’s algorithm, the parameters of the propos...

1 はじめに インターネットアプリケーションにおける重要な通信品質 特性としてパケット転送遅延が挙げられる。実際に、TCP やストリーミングアプリケーションにおいて通信品質を考 慮した転送を行なうには、パケット転送遅延時間の予測が 必要であり、特にパケットロスを検知するためには、遅延 分布のすその部分の特性を明らかにすることが重要とな る。本稿では、まず測定ツールを用いてパケット転送遅延 を測定し確率分布関数による分布のモデル化を行う。統計 分析では、特に分布のすその部分に着目し、時間帯による 遅延特性の変化や確率分布のパラメータ推定のモデル化 における精度も明らかにする。その結果、パレート分布が 遅延分布のモデルとして最適であることを示す。さらに、 統計分析の結果をストリーミングアプリケーションに適用 し、ユーザの要求する通信品質を実現できるプレイアウト 制御アルゴリズムを提案する...