基于双缓存机制的文件透明加解密方法与实现

为了实现文件透明加解密过滤驱动,首先提出了基于文件流的文件信息存储和转化方式,对于已经存储标识信态的文件,只有规定进程,才能读到其明文,否则读到的则是该文件的密文.其次,提出了分组对齐IRP(Input/Output Pequest packet)的方法,使加解密过滤驱动对加解密算法具有通用性.最后,设计并实现了具有文...     

A maritime inventory routing problem: Practical approach

Despite of the practicality of the motivation of the inventory routing problem (IRP), there are few successful implementation stories of IRP based decision support systems which utilize optimization algorithms. Besides the fact that the IRP is an extremely challenging optimization problem, simplifications and assumptions made in the definition of typical IRP in the literature make it even more difficult to take advantage of the developed technologies for IRP in practice. This paper introduces a flexible modeling framework for IRP, which can accommodate various practical features. A simple algorithmic framework of an optimization based heuristic method is also proposed. A case study on a practical maritime inventory routing problem (MIRP) shows that the proposed modeling and algorithmic framework is flexible and effective enough to be a choice of model and solution method for practical inventory routing problems.     

基于工程化方法的战储物资信息资源规划研究

针对战储物资信息资源利用现状,提出了基于工程化方法的战储物资信息资源规划方法,构建了战储物资系统业务模型、功能模型、数据模型和体系结构模型,规范了信息基础标准,为实现战储物资信息资源深度共享和提高战储物资保障能力奠定了基础。     

基于文件系统过滤驱动的多策略加密系统

讨论了基于WDM分层驱动模型的文件系统过滤驱动的工作原理以及基于该原理的多策略加密系统的设计与实现,讨论了该系统的不足及改进的方向。     

辽滨沿海经济区区域能源潜力分析

目的研究盘锦辽滨沿海经济区能源供应特性和建筑用能特性,以实现区域能源的供需平衡、高效利用和建筑的低碳节能．方法应用综合资源规划方法、典型建筑分类简化法、热储法等方法对辽滨沿海经济区内常规能源、可再生能源和需求侧节约能源的潜力进行分析．结果盘锦辽滨沿海经济区的需求侧节能潜力约为16％,常规能源中天然气的规划可以满足未来发展要求而电力供应可靠性低,太阳能资源潜力约为年发电量100kW／m^2,风能资源潜力约为年发电量650．9kW·h／m^2,生物质能资源丰富,地热能资源潜力约为8．2×10^18J,综合资源应用潜力巨大且均达到了应用条件．结论研究结果为盘锦辽滨沿海经济区区域能源规划设计提供了理论与技术依据．     

Robustness of inventory replenishment and customer selection policies for the dynamic and stochastic inventory-routing problem

When inventory management, distribution and routing decisions are determined simultaneously, implementing a vendor-managed inventory strategy, a difficult combinatorial optimization problem must be solved to determine which customers to visit, how much to replenish, and how to route the vehicles around them. This is known as the inventory-routing problem. We analyze a distribution system with one depot, one vehicle and many customers under the most commonly used inventory policy, namely the (s,S), for different values of s. In this paper we propose three different customer selection methods: big orders first, lowest storage first, and equal quantity discount. Each of these policies will select a different subset of customers to be replenished in each period. The selected customers must then be visited by a vehicle in order to deliver a commodity to satisfy the customers' demands. The system was analyzed using public benchmark instances of different sizes regarding the number of customers involved. We compare the quality and the robustness of our algorithms and detailed computational experiments show that our methods can significantly improve upon existing solutions from the literature.     

Analytical frameworks to incorporate demand response in long-term resource planning

Many utilities are obligated by state regulatory or legislative requirements to consider demand response (DR) as part of their resource planning process. There are several ways to incorporate DR into resource planning modeling and each has its advantages and disadvantages. We explore the current analytical frameworks for incorporating DR into long-term resource planning. We also consider whether current approaches accurately and realistically model DR resources in capacity expansion and production cost models and whether barriers exist to incorporating DR into resource planning models in a more robust fashion. We identify 10 specific recommendations for enhancing and expanding the current approaches.     

基于WDM的设备驱动程序设计和实现

设备驱动程序是硬件设备连接到计算机系统的软件接口。Windows驱动程序模型(WDM)是Windows平台的新一代设备驱动程序模型,WDM的研究对设计优良设备驱动程序有重要指导作用。文章分析WDM的工作原理和机制,着重介绍WDM设备驱动程序的设计和实现方法,并给出一个通用串行总线(USB)设备驱动程序的设计实例。该设计将USB驱动程序分为即插即用(PnP)、电源管理、USB初始化和USB设备输入/输出(I/O)等功能模块,具有结构清晰、易移植、复用性好等优点,在USB驱动程序设计中具有良好的应用价值。     

IRP/DSM技术是谋求煤矿可持续发展的有效途径

简述IRP／DSM技术的内涵，介绍煤炭生产和能源消费结构对煤矿可持续发展的影响，以及运用IRP／DSM技术减少环境污染，谋求可持续发展的途径，浅析推行IRP／DSM计划寻求煤矿可持续发展的方法。