Thermal performance indicators for refrigerated road vehicles

An experimental evaluation of insulation effectiveness, pull-down times and effectiveness of a mechanical refrigeration unit was performed on five refrigerated panel vans. Additionally, a mapping of temperature variability in the cargo space was carried out during a simulated journey encompassing several door openings. The temperature variability measured in the vans was neither correlated to the effectiveness of the insulation nor the time required to achieve complete cooling of the cargo space. These criteria are common thermal performance indicators used to evaluate refrigerated vehicles in international standards. The efficiency of insulation was correlated to the pull-down times, presenting the possibility of calculating the former as a function of the latter. The temperature variability was correlated with the time required for the unit to recover temperature control after a door opening and the difference between the maximum and minimum temperatures reached during a door opening cycle.     

以内存映像文件为核心的报表输出方法

论述了内存映像文件的基本特点,简单描述了内存映像文件建立的方法及相关步骤,详细介绍了一种利用内存映像文件实现同步输出的报表输出方法及编程实现时应注意的问题。     

北京千户新房迁居户问卷调查报告

随着我国房改政策的实施,居民的住房消费、住房选择发生很大变化。作者以北京市１０００户新房迁居户为调查对象,从迁居户的迁移方向、迁居距离,迁移适应等方面探讨了当今居民在选择居所时一些新的动态。     

Annual Report of the Policy and Planning Board: 1983.

The Policy and Planning (P&P) Board is mandated to report to the membership annually on its activities. This report covers the P&P Board's two meetings in 1983 and future plans. The P&P Board held its retreat meeting on May 6 to 8 in Washington, D.C., and its regular business meeting on October 21 to 23 in the APA Building in Washington, D.C. The report includes the organization of APA; board, committee, and division operations; review of major documents; and review of APA Bylaws. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Design and Implementation of the River Sheaf Comprehensive Flood-Alleviation Scheme

The River Sheaf Comprehensive Flood-Alleviation Scheme is a flood-defence scheme promoted by the Yorkshire Region of the National Rivers Authority. The scheme will improve 5.2 km of main river from a 1-in-5 year standard to a 1-in-50 standard at an overall cost of £3.1 million over the next four years. The hydrological, hydraulic and benefit/cost analyses have been carried out by the National Rivers Authority. Balfour Maunsell were commissioned to carry out the detailed structural design, prepare and administer contracts and supervise construction. The paper covers the preliminary design work and the detailed design of Phase I of the scheme.     

通过VB6.0数据报表对象创建多记录集报表

在VB6．0中通过一种变通的方法．实现在数据报表对象的细节区输出多个记录集中的记录。     

自动站月报审核中常见问题分析及对策思考

文章对自动气象站地面月报表数据文件在审核中经常遇到的问题进行了分析总结,针对这些问题提出了相应的解决对策,希望在地面数据质量控制工作中,对避免错情的发生、保证地面月数据文件的质量具有一定的参考。     

规范化需求定义方法NRD

信息系统建设是一项复杂的系统工程,也是关系国家“三金工程”和“军队指挥自动化”的关键技术之一。在信息系统开发中,用户需求定义是至关重要的第一步。本文详细介绍我们采用的需求定义方法－“规范化需求定义方法ＮＲＤ”。该方法是我们信息系统开发实践的总结。     

化工建设工程质量监督报告编写

在说明建设工程质量监督报告的作用和意义的基础上,指出化工建设工程质量监督报告的特殊性及在编写时应注意的问题。     

RSView SE在原料场皮带机控制系统中的应用与开发

本文阐述了RSView SE组态软件的特点及使用方法,介绍了基于该组态软件的邯郸新区原料场分布式监控系统架构,并深入探讨了利用RSView SE组态软件内嵌的VBA实现原料场皮带机控制系统的流程动态查询及报表功能。