莫拉萨德拉大坝底孔高压闸室设备安装实践

针对莫拉萨德拉大坝底孔闸室设备设计布置的特点,结合有限的闸室空间,深入分析了其安装工艺的可行性。在充分利用有限的闸室结构布置的基础上,确定了合理的安装顺序与安全可靠的吊装工艺,解决了闸室狭小空间带来设备安装的难点,完成了大坝按期挡水的预定目标。     

浅谈大坝安全监测常用方法与应用

大坝安全监测是通过仪器观测和巡视检查对水利水电工程主体结构、地基基础、两岸边坡、相关设施及周围环境所进行的测量及观察;监测既包括对建筑物固定测点按一定频次进行的仪器观测,也包括对建筑物外表及内部大范围对象的定期或不定期的直观检查和仪器探查。文章通过阐述大坝安全监测的重要性,并结合工程实际,介紹大坝安全监测常用的几种手段和方法,提出了大坝安全监测中需注意的问题,为人坝安全管理工作提供参考。     

浅谈大坝安全监测常用方法与应用

大坝安全监测是通过仪器观测和巡视检查对水利水电工程主体结构、地基基础、两岸边坡、相关设施及周围环境所进行的测量及观察;监测既包括对建筑物固定测点按一定频次进行的仪器观测,也包括对建筑物外表及内部大范围对象的定期或不定期的直观检查和仪器探查。文章通过阐述大坝安全监测的重要性,并结合工程实际,介紹大坝安全监测常用的几种手段和方法,提出了大坝安全监测中需注意的问题,为人坝安全管理工作提供参考。     

五渡港水库大坝渗流安全监测自动化设计

五渡港水库大坝安全监测除变形监测采用人工外,其它水库水位、降雨量和坝体渗流监测等项目均实现自动化监测。文章主要介绍了五渡港水库大坝监测系统的设计原则、各测点的布置情况,以及监测数据的自动化处理。     

五渡港水库大坝渗流安全监测自动化设计

五渡港水库大坝安全监测除变形监测采用人工外,其它水库水位、降雨量和坝体渗流监莉等项目均实现自动化监测.文章主要介绍了五渡港水库大坝监测系统的设计原则、各测点的布置情况,以及监测数据的自动化处理.     

债务布置结构的公司治理效应初探

债务布置结构是指企业债务融资过程中按照其信息是否公开分为公开债务融资和非公开债务融资，以及它们之间的构成比例关系，不同的债务结构代表不同利益相关主体的意志，将产生不同的融资效应，并体现在上市公司进行债务选择的倾向性上。本文就债务布置结构的公司治理效应展开研究，以期为我国企业债务布置结构失衡现状及合理、有效配置债务资源提供理论依据.     

大坝贴坡技术在水库除险加固中的应用

广西上思县念伦水库内坡局部坍塌且受冲刷严重,根据经济、实用的原则,采用现浇混凝土板护坡的形式进行加固。文章以念伦水库除险加固工程为例,介绍大坝贴坡混凝土施工机械布置、施工程序、施工方法、质量控制措施,并探讨大坝内坡施工需要注意的问题。     

大坝贴坡技术在水库除险加固中的应用

广西上思县念伦水库内坡局部坍塌且受冲刷严重,根据经济、实用的原则,采用现浇混凝土板护坡的形式进行加固。文章以念伦水库除险加固工程为例,介绍大坝贴坡混凝土施工机械布置、施工程序、施工方法、质量控制措施,并探讨大坝内坡施工需要注意的问题。     

大坝安全监测项目设置和测点布置思路构建

本文以河北省邢台市的朱庄水库为例,结合大坝安全监测的实际要求及管理监测特点,探讨了其安全监测项目设置及测点布置思路,并针对历史监测遗留问题进行了深入分析,以期为同行就大坝安全监测管理问题提供必要的帮助与启发。     

双轴不对称框架结构设置BRB消能减震分析

以昆明一框架砼结构教学楼为实例,采用防屈曲支撑(BRB)进行消能减震分析;简要介绍了BRB的模型、布置原则及有效截面的推导;采用弹性、弹塑性时程分析方法对该结构进行了计算分析,在小震和风载作用下,BRB与主体结构表现为弹性;在大震下BRB进入塑性阶段,通过很好的滞回性能吸收地震力,有效提高了主体结构的安全性能。     

来宾市大里水库大坝安全评价综述

文章论述了广西来宾市大里水库大坝安全鉴定的主要内容，指出了大里水库安全方面存在的问题，以此作为管理的依据。     

白石牙水库大坝料场选择与开采规划

文章阐述了白石牙水库大坝料场的分析、选择和开采等情况。能不能用、够不够用、好用不好用、怎么用是料场选择与开采主要考虑的问题。通过介绍白石牙水库大坝料场选择的案例,为其他水利工程项目实施提供借鉴。     

白石牙水库大坝料场选择与开采规划

文章阐述了白石牙水库大坝料场的分析、选择和开采等情况。“能不能用、够不够用、好用不好用、怎么用”是料场选择与开采主要考虑的问题。通过介绍白石牙水库大坝料场选择的案例，为其他水利工程项目实施提供借鉴。     

军事装备物流管理信息系统设计方法研究

阐述了军事装备物流管理信息系统的基本功能；介绍了军事装备物流管理信息系统的构成及各个组成部分的基本知识；在分析军事装备物流管理信息系统工作内容的基础上，运用生命周期法，提出了一种军事装备物流管理信息系统的设计方法。     

基于模糊多属性决策的炮闩系统备件供应研究

为了更好地确定炮闩系统中零部件备件种类和数量,在零部件故障模式分析的基础上,将模糊多属性决策的方法引入到各故障模式对整个炮闩系统可靠性危害程度分析中。通过确定各故障模式的属性及其权重,并采用梯形模糊数模拟其数学特征,应用逼近理想解的排序方法综合评估各故障模式的危害度,获得了影响炮闩系统可靠性的主要故障模式和关键重要件。     

The technological choice decision making process: An example from Nigeria—the Kainji hydro-electric technology: A multi-purpose development technolog

This paper examines the technological-cum-economic/social/political criteria under which technological decisions are made. An example—The Kainji Dam hydro-electric technology—from Nigeria (a buyer of technology) is selected as a case study. The study shows the importance of socio-economic criteria in the process of making any technological choice decision. Nonetheless a close interplay of some political factors may mitigate purely the socio-economic considerations in the technological choice decision making process. This is evident in the choice of the Kainji Dam technology in Nigeria.     

浅谈建设工程质量保证体系

建设工程质量保证体系包括工程决策质量、工程设计质量、工程施工质量及工程运行质量。设计质量和施工质量是工程质量的主体,设计单位和施工单位建立和完善质量保证体系并使之有效运行是建设工程成败的关键。     

组态软件图形系统的设计与实现

图形系统是组态软件一个重要的组成部分,它也是人机交互的主要设计工具。文章详细地介绍了图形系统的设计模式并且描述了主要类的设计,着重阐述了图形系统中的图形对象的管理、绘制、存储和显示等问题的处理方式。     

A group MCDA method for aiding decision-making of complex problems in public sector: The case of Belo Monte Dam

We review the applications of Multiple Criteria Decision Analysis (MCDA) methods in energy sector and in Environmental Impact Assessment (EIA), finding a gap on the non-use of specific methods that deal with divergent opinions, such as a group MCDA method. This way we suggest the application of a group MCDA method to demonstrate how it may be used for aiding group decision-making in public sector. Aiming at analyzing the aforementioned problem, we simulate the choosing of the construction alternatives of Belo Monte Dam. The power plant project was marked by several conflicts among stakeholders due to the generation of diversified environmental, social and economic impacts. The results show that a group MCDA method may be used to aid public sector in the analysis of complex problems, by dividing them into several parts, allowing, therefore, a transparent decision-making process, as well as to solve gaps in the EIA methods.     

Multiplant MRP

Many manufacturing firms have multiple manufacturing plants, located in geographically diverse parts of the world. This situation is becoming more common, as firms establish new plants in foreign countries to take advantage of low labor cost. In such cases, it is not unusual for the firm to retain production capability of certain key parts in a backup plant, with the necessary equipment and trained workforce in place. High volume production could be obtained relatively quickly from the backup plant in case of an emergency at the main supplying plant. In such multiplant settings, the transportation costs are significant. Throughout this paper, we use the term “multisourced parts” to describe parts produced in more than one location.Material Requirements Planning (MRP) is the component of a total manufacturing control system that is designed to manage inventory and plan orders for parts and material with dependent demand (demand derived from the demand of other items). Most of the literature on MRP systems discusses MRP methodology in a single-plant environment. Most MRP software systems in use today are single-plant systems.Currently, it is common for firms with multiple plants treated as cost centers to use an independent single-plant MRP system for each and handle the transshipment problems manually. Because of lack of coordination of production schedules between supplying and demanding plants, those firms hold more inventory and experience longer lead times than necessary to compensate for uncertainties in schedules and supply policies.The purpose of this article is to enhance single-plant MRP systems for coping with multiplant situations in which: the plants are regarded as cost centers, there exist multisourced parts, and the transportation costs are significant. The multiplant MRP system should recognize that parts are produced in different plants, make offset calculations for in-transit lead times, and consider transportation costs when establishing production requirements and shipping routes for multisourced parts. The objective is, beginning with the corporate-determined master schedule for finished products, to communicate in one planning cycle time-phased planned order release schedules and shipping/delivery schedules to each manufacturing plant producing components for the finished products.We first present a simplified framework for the multiplant MRP system, where a transportation algorithm is incorporated into the MRP logic. Then we refine this simplified framework to handle more complex aspects of a multiplant network. These complexities include the treatment of requirements that are not shipped on time and the regeneration of new MRP schedules. We also observe that the solution to the transportation problem described above is affected by the lot-sizing rules employed. In addition, we discuss several important issues and decisions that confront a firm when implementing a multiplant MRP system.