铁电存储器在机舱油气浓度数据记录仪的应用

机舱油气浓度数据记录仪可以对船舶机舱油气浓度的数据进行记录分析、超限报警、存储报警数据,避免机舱发生火灾事故,对保障机舱安全具有重要作用。采用二线制串行铁电存储器作为机舱油气实时数据存储设备、内部集成电路总线协议,同传统的存储器相比,可以显著提高油气浓度超限报警的存储速度和存储容量,准确记录并且长时间地保存报警数据,延长油气浓度数据记录仪的使用寿命,为以后查找报警记录提供准确可靠的原始数据。     

一种基于硬盘保护卡的网络差异拷贝方法

硬盘保护卡在大规模计算机场所得到了广泛应用,针对传统保护卡网络拷贝方法数据量大、拷贝速度低的问题,文章提出并实现了一种网络差异拷贝的方法,有效降低了网络的负载,将接收端与发射端计算机硬盘上的数据实现完美统一。     

地理路由算法在Duty-Cycle网络中的研究

文章提出了Duty-Cycle网络中的地理路由算法MMGR（多度量地理路由）。这个算法所考虑的度量因素不仅包括传统地理路由中提到的地理距离,也包括候选节点睡眠延迟的Duty-Cycle。经仿真表明,在Duty-Cycle网络中,这种新的算法在端到端的延迟方面比传统的GR（地理路由）算法有更好的效果。     

Can agents measure up? A comparative study of an agent-based and on-line optimization approach for a drayage problem with uncertainty

Experiments studying the behavior of agent-based methods over varying levels of uncertainty in comparison to traditional optimization methods are generally absent from the literature. In this paper we apply two structurally distinct solution approaches, an on-line optimization and an agent-based approach, to a drayage problem with time windows under two types of uncertainty. Both solution approaches are able to respond to dynamic events. The on-line optimization approach utilizes a mixed integer program to obtain a feasible route at 30-s intervals. The second solution approach deploys agents that engage in auctions to satisfy their own objectives based on the information they perceive and maintain locally. Our results reveal that the agent-based system can outperform the on-line optimization when service time duration is highly uncertain. The on-line optimization approach, on the other hand, performs competitively with the agent-based system under conditions of job-arrival uncertainty. When both moderate service time and job-arrival uncertainties are combined, the agent system outperforms the on-line optimization; however, in the case of extremely high combined uncertainty, the on-line optimization outperforms the agent-based approach.     

Vehicle routing problem and driver behaviour: a review and framework for analysis

Vehicle routing problems (VRPs) whose typical objective is to minimise total travel costs over a tour have evolved over the years with objectives ranging from minimising travel times and distances to minimising pollution and fuel consumption. However, driver behaviour continues to be neglected while planning for vehicle routes. Factors such as traffic congestion levels, monotonous drives and fatigue have an impact on the behaviour of drivers, which in turn might affect their speed-choice and route-choice behaviours. The behaviour of drivers and their subsequent decision-making owing to these factors impact the revenue of transport companies and could lead to huge losses in extreme cases. There have been studies on the behaviour of drivers in isolation, without inclusion of the objectives and constraints of the traditional routing problem. This paper presents a review of existing models of VRP, planner behaviour models in the VRP context and driver behaviour models and provides a motivation to integrate these models in a stochastic traffic environment to produce practical, economic and driver-friendly logistics solutions. The paper provides valuable insights on the relevance of behavioural issues in logistics and highlights the modelling implications of incorporating planner and driver behaviour in the framework of routing problems.     

基于电子海图的计划航线自动审批研究

分析舰船计划航线自动审批的基本原理和流程,建立自动审批的相关数学模型,给出实现自动审批的方法与过程,并在Windows平台用VC6.0语言编程实现计划航线自动审批的功能.     

基于B/S架构的多媒体视频点播系统的实现

结合Win2000 Server平台开发实例,阐述了基于B/S架构的多媒体视频点播系统的协议原理、软件架构和设计实现方案。     

舰船通信资源调度技术研究

通信资源管理是舰船通信控制管理技术的核心部分。通过分析比较几种典型通信资源管理技术的优缺点和适用性,介绍一种基于设备池的通信资源调度分配方法,并从组成结构、运行步骤和核心关键技术方面,对基于设备池的通信资源调度分配技术进行了详细的分析论证。     

局部扭曲立方体多播容错路由算法

通过对经典最短路算法的研究,提出一种基于最短路权矩阵法的改进算法。实验结果表明,与权矩阵法相比,改进算法能提高计算效率、增强寻路直观性;特别是当网络中大量节点为目的节点时,该算法更为简捷、有效。     

基于串口的TMS320C6713flash应用程序在线升级设计

针对TI公司的TMS320C6713DSP在特殊环境使用中需要脱离JTAG仿真器的问题,设计了通过串口传输,采用slip协议分包传送和错误重发机制,将需要更新的应用程序无差错传送给DSP,然后烧写到flash中,实现DSP应用程序的在线升级。