空气处理过程自动分析软件的开发

介绍一个能对空气处理过程进行自动分析的计算机软件，该软件能生成湿空气的焓－湿图，显示空气处理过程，并对娄在动处理，为空调系统设备选择提供其础数据。     

含无伴电流源电路回路电流方程列写法

论述在列写回路电流方程时，如电路中含有无伴电流源时的两种处理方法。     

航空客运收益管理的结构模型

本文分析了收益管理决策目标的组成要素以及内外主要因素;讨论了容量、价格和销售数量三个决策变量与市场需求要素之间的关系;具体地提出了达到收益管理目标可以采用的两条降低成本的途径和五种提高收入的基本方式;从系统的角度提出了集成性收益管理决策的结构模型。     

Health Risk,Inequality Indexes,and Environmental Justice

Inequality indexes have long been used to analyze distributions of income. Studies have recently begun to use these tools to evaluate the equity of distributions of environmental harm. In response, issues have been raised regarding the appropriateness of using income-based measures in the context of undesirable outcomes. We begin from first principles, identifying a theoretical preference structure under which income-based tools can be appropriate for ranking distributions of “bads.” While some critiques of existing applications are valid, they are not a justification for rejecting the approach altogether. Instead, we show how standard income-based measures can be adjusted to accommodate bad outcomes. Rather than inequality indexes, we argue that equally distributed equivalents (EDEs) are well-suited for this purpose since they account for levels and dispersion of outcome distributions. The Kolm–Pollak EDE is particularly useful, having the advantage of consistently evaluating both bads and their complementary goods (e.g., mortality risk and survival probability). As an illustration, we show how these tools can inform an environmental justice analysis of a proposed Environmental Protection Agency (EPA) rule addressing indoor air pollution.     

基于ASRank和MMAS的蚁群算法求解飞机指派问题

本文将航班串的飞机指派问题归结为车辆路径问题,考虑连续航班串之间衔接时间、衔接机场的约束、每架飞机的总飞行时间约束,建立了带有飞行时间约束的车辆路径问题的混合整数规划模型。构造了蚁群系统算法,引入基于排序的蚂蚁系统和最大最小蚂蚁系统算法的信息素更新策略。选取某航空公司7组初始航班串集合进行测试,并对算法中的重要参数进行了分析。实验结果表明,本文设计的模型和算法可以有效地减少连续航班串之间的总衔接时间,在可接受的计算时间内获得满意解。     

基于改进模糊遗传算法的混合车辆路径问题

本文建立了多配送中心、多车型、多产品的车辆路径问题的混合数学模型,提出了一种新的模糊遗传算法求解混合车辆路径问题,通过改进的模糊逻辑控制器实现交叉概率和变异概率的动态调整,以加快算法收敛速度并避免算法陷入局部最优解。采用标准算例进行对比,证明模糊遗传算法有较好的计算结果和计算效率,并用模糊遗传算法对混合车辆路径模型进行仿真测试,取得了理想的结果。     

Scheduling Truck Arrivals at an Air Cargo Terminal

We consider the scheduling of truck arrivals at an air cargo terminal. By coordinating arrivals of cargo delivery trucks with outbound flight departure schedules, some of the shipments can be transferred directly to the departing flights, while others will be stored at the terminal's storage facility and incur extra handling and storage costs. The objective is to obtain a feasible schedule so as to minimize the total cost of operations. We formulate the problem as a time‐indexed integer program and show that, even with limited number of unloading docks at the terminal, the problem is non‐trivial (NP‐hard in the strong sense). Our solution method includes an exact solution procedure to determine an optimal unloading sequence for the shipments carried by each truck, together with a Lagrangian relaxation‐based heuristic for assigning trucks to truck docks and determining truck arrival times. We conducted computational experiments to test the performance of our solution method. Computational results show that our method can generate near‐optimal solutions efficiently. Our simulation results indicate that the scheduling approach proposed in this paper has the potential to generate significant cost savings over a first‐come, first‐served approach currently used at the air cargo terminal that we observed.     

WTO与汽车工业发展战略:整车还是零部件优先

在分析、对比我国零部件工业和整车产业经济绩效的基础上 ,文章认为零部件工业尽管先天不足 ,但却取得了更好的经济绩效 ,同时 ,由于相对比较低的进入壁垒以及加入 WTO之后面向全球化的竞争 ,零部件工业的竞争力和发展前景应该比整车产业要好一些。在此基础上 ,提出加入 WTO之后 ,应该优先发展零部件工业 ,在零部件已有一定基础的前提下 ,放开政策 ,扩大轿车作为消费品的需求 ,从而拉动整个汽车工业的发展     

徐建寅与西方近代电气技术知识的引进

徐建寅翻译的《电学》和记录他在欧洲考察的成果和见闻的技术性著作《欧洲杂录》，最早全面、系统、详尽地为我国引进了西方近代电气技术知识。这在当时国内对西方科学技术知之甚少的情况下，具有重要的先导和启蒙意义；它为中国近代技术的发展和科技人才的培养创造了条件；徐建寅所体现的远见卓识和严谨务实的科学作风，也为后人树立了典范。     

变风量空调系统的末端及控制

对变风量（VAV）空调系统末端装置的工作原理与功能作了简要介绍。对具有代表性的VAV空调系统末端装置的结构作了说明。分析了VAV空调系统末端装置的控制功能及特点。