Intelligent traffic system(ITS) is a development trend for urban modern traffic.Active guidance control for urban traffic can relieve increasing traffic congestion pressure effectively.FCD(floating car data) based dyn...Intelligent traffic system(ITS) is a development trend for urban modern traffic.Active guidance control for urban traffic can relieve increasing traffic congestion pressure effectively.FCD(floating car data) based dynamic guidance for urban traffic is one of the directions of traffic control research.To meet the real-time demand for massive FCD processing,an FCD parallel computing based dynamic traffic guidance approach is presented and implemented.The FCD properties are analyzed in detail.An FCD parallel computing based dynamic traffic guidance system is developed on KD-50-I-E platform.Experimental results demonstrate the effectiveness and feasibility of the proposed approach.展开更多
分子动力学(m o lecu lar dynam ics)模拟蛋白质等大分子内原子间的相互作用.蛋白质折叠所需的时间通常在微秒(10-6s)量级,而进行模拟的时间步长在飞秒(10-15s)量级,并且每步需要计算大量的相互作用(O(n2),n为原子数),以致于无法模拟足...分子动力学(m o lecu lar dynam ics)模拟蛋白质等大分子内原子间的相互作用.蛋白质折叠所需的时间通常在微秒(10-6s)量级,而进行模拟的时间步长在飞秒(10-15s)量级,并且每步需要计算大量的相互作用(O(n2),n为原子数),以致于无法模拟足够长时间的折叠过程.现今在满足精确度的需求下没有更好的模拟算法.最近,生物学家研究了一种分布式的动力学方法,使得可以利用分布在In ternet上的计算机进行并行模拟成为可能.本文的目标是设计并实现在分布式P 2P和网格计算环境等多种异构计算资源下进行动力学模拟的可靠框架,以便更大限度地利用计算资源,加快计算过程.我们基于Java和W eb serv ice技术,已经实现了对应用透明的计算框架,并已将它扩展到我们的网格计算环境.实验表明分子动力学模拟程序在该框架下运行良好.展开更多
文摘Intelligent traffic system(ITS) is a development trend for urban modern traffic.Active guidance control for urban traffic can relieve increasing traffic congestion pressure effectively.FCD(floating car data) based dynamic guidance for urban traffic is one of the directions of traffic control research.To meet the real-time demand for massive FCD processing,an FCD parallel computing based dynamic traffic guidance approach is presented and implemented.The FCD properties are analyzed in detail.An FCD parallel computing based dynamic traffic guidance system is developed on KD-50-I-E platform.Experimental results demonstrate the effectiveness and feasibility of the proposed approach.
