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车用压缩天然气（ＣＮＧ）储气瓶有全钢（ＮＧＶ２—１），或铝内衬加筒身段环向纤维增强复合材料气瓶（ＮＧＶ２—２），钢或铝内衬加外层整体纤维增强复合材料气瓶（ＮＧＶ２—３）和塑料内衬加纵环向纤维增强复合材料气瓶（ＮＧＶ２—４）４种类型。复合材料气瓶中，ＮＧＶ２—４复合材料气瓶代表未来压缩天然气储气装置的发展方向。文中介绍了这３种ＣＮＧ复合材料气瓶内衬和增强纤维的基本技术要求，复合材料气瓶的性能试验项目和鉴定检验规定。最后简要说明了西安向阳航天工业总公司开发研制的容量为３０、５０、９０、１１０、４００Ｌ５种规格的ＮＧＶ２—４复合材料气瓶的情况。另外，西安市１８路公共汽车上已安装试用了５０Ｌ和９０Ｌ的气瓶，成都市的夏利和奥拓出租车上也已安装使用了５０Ｌ的气瓶。从公共汽车和出租车所安装的气瓶的使用情况来看，气瓶状态良好，改装方便，易操作。     

行为的演变与聚落形态：中国皖南村落与意大利小城比较

现代文明的发展，使旧有聚落形态受到冲击。通过对中国皖南村落与意大利小城特位未索的比较，试图从行为演变与聚落形态的关系中找到保护和发展旧有聚落形态的契合点。     

基于嵌套问题的半圆轴瓦单元化装箱设计与容器选择

针对工厂不规则形状工件单元化装箱与搬运的实际需要,以汽车与发动机行业常见的内凹形状的半圆轴瓦为代表,研究它的单元化装箱和最终标准容器的选择,提出半圆轴瓦等同件装箱过程中的特殊嵌套问题.这一嵌套问题不同于常见的平面下料嵌套问题,是将三维物体简化为二维问题来考虑,既有嵌套,也有装箱.分析嵌套柱形成的几何关系,将嵌套柱看作长...     

在PB中利用OLE技术解决多文档问题

在MIS的开发过程中，涉及到文字量较大的诸如常用文件摘录、法律法规等在系统中主要起备查、审批参考等作用的文档处理时，利用PB提供的OLE操纵WORD文档的办法较好地解决了这个问题。     

A bottleneck assignment approach to the multiple container loading problem

The container loading problem addresses the question of how to store several three dimensional, rectangular items (e.g. boxes) in one or more containers in such a way that maximum use is made of the container space. The multiple container problem concentrates on the situation where the consignment to be loaded cannot be accommodated in a single container. To minimize the number of required containers the repeated application of a single container approach is often suggested in the literature. In contrast, in this paper an approach based on a set partitioning formulation of the problem is presented. Within this approach a single container algorithm is used to produce alternative loading patterns. This approach easily allows introducing additional aspects, e.g. separation of boxes or complete shipment of boxes.     

包装容器计算机辅助设计系统—PCAD

对包装容器设计方法进行分析研究，综合近年来计算机辅助设计的最新发展技术，命同了一个计算机辅助包容器设计系统。     

Heuristics for solving continuous berth allocation problem considering periodic balancing utilization of cranes

This study investigates a berth allocation problem considering the periodic balancing utilization of quay cranes in container terminals. The proposed model considers that the quay cranes allocated to a work shift should be fully used and other real-world considerations, such as the continuous quay line, the penalties for early arrivals and departure delays. To solve the model, several heuristics are developed: the model for large problems is decomposed into sub-models that are solved by rolling-horizon heuristics; neighborhood search heuristics are used for optimizing a berthing order of vessels; parallel computing is used to improve the algorithmic performance. The method performs well when applied to real-world large-scale instances with promising computation time that is linearly related to the number of vessels.     

聚乙烯高整体容器多年累积剂量的近似计算方法

高整体容器(HIC)是一种经特殊设计制造的具有高强度、高密封性、高化学稳定性和高热稳定性的低、中水平放射性废物处置容器。对于聚乙烯材料制作的高整体容器,其在设计和使用过程中存在一个重要的指标,即辐照稳定性。本文介绍一种高整体容器累积剂量的计算方法,并使用此方法对AP1000核电工程中使用的聚乙烯高整体容器累积剂量进行估算。通过与Micro Shield、MCNP程序计算的结果比较,证明该方法是一种保守的、偏安全的并可用于实践的高整体容器累积剂量计算方法。     

Entwicklung eines Transformationsmodells – Modularisierung schrittweise gedacht

For some years now, the process industry has been meeting the challenges of the markets with modular production and logistics concepts. This article presents this development process in the form of a four-stage transformation model. It is shown that the path towards modular production environments can be taken step by step. The motto is “evolution instead of revolution”. First, an overview of the state of the art of modularized production and logistics systems is given. Based on this, the article describes and classifies the four different stages of modularization.     

集装箱式高压变频器系统在磨机上的应用

为实现磨机的平稳启动及调速,在电力驱动系统中增加了高压变频器驱动。并通过一台变频器拖动两台磨机的方案,实现了多机软启动。为了减少现场工作量,配置电气设备集装箱,将变频器及高压电控系统集成一体化设计,作为一个整体提供给客户,大大减少现场施工任务,设备对现场环境适应性更强。