嵌入式星载软件单元测试方法探讨

软件测试是软件质量保障的基础,而单元测试是软件测试的重要阶段,单元测试用例的设计是软件测试的重要环节。文章重点结合xx型号嵌入式星载软件的一个模块,详细介绍并论述单元测试的方法。     

前保系统行人保护小腿碰撞优化

某车需要增加配置在前端保安装两个倒车雷达探头,且该车目前设计状态无下支撑板,基于LS—DYNA软件进行分析该状态下小腿伤害指标胫骨加速度和小腿弯曲角在大多数碰撞点严重超标。经过分析是由于倒车雷达探头本身材料相对刚度较大,且在X向上的长度较长,严重削弱了小腿碰撞过程中的压溃空间。通过调整倒车雷达的布置位置和增加下支撑板的方式来降低保险杠前端的整体刚度来降低小腿的伤害指标,经过验证该方案最终满足行人保护法规的要求。     

Developing future hourly weather files for studying the impact of climate change on building energy performance in Hong Kong

The concern on climate change leads to growing demand for minimization of energy use. As building is one of the largest energy consuming sectors, it is essential to study the impact of climate change on building energy performance. In this regard, building energy simulation software is a useful tool. A set of appropriate typical weather files is one of the key factors towards successful building energy simulation. This paper reports the work of developing a set of weather data files for subtropical Hong Kong, taking into the effect of future climate change. Projected monthly mean climate changes from a selected General Circulation Model for three future periods under two emission scenarios were integrated into an existing typical meteorological year weather file by a morphing method. Through this work, six sets of future weather files for subtropical Hong Kong were produced. A typical office building and a residential flat were modeled using building simulation program EnergyPlus. Hourly building energy simulations were carried out. The simulated results indicate that there will be substantial increase in A/C energy consumption under the impact of future climate change, ranging from 2.6% to 14.3% and from 3.7% to 24% for office building and residential flat, respectively.     

The challenge of Intelligent Manufacturing Systems (IMS): the European IMS information event

In the suburb of Patras, Rion on 7–8 April, the European Intelligent Manufacturing Systems (IMS) Information Event took place, in the form of a symposium. The symposium was organized, as part of the IMS series of dissemination events, by the EC after the completion of the two-year feasibility study. The main objective of the event was the presentation of the results of each test case and of the feasibility study in general. Interactive sessions were organized to discuss the experience of international cooperation. The symposium was coorganized with the University of Patras.     

三峡工程左岸电站厂房1#、2#机蜗壳二期混凝土浇筑施工质量控制

三峡左岸电站厂房1^#、2^#机蜗壳二期混凝土浇筑根据部位不同采用了门机吊运混凝土和泵送混凝土相结合的方式。为了将座环支墩顶部、座环下环板阴角部位浇筑密实，采用了预埋径向泵管和布置环向泵管的浇筑方法。实践证明：这种施工方法切实可行，混凝土浇筑质量达到了预期的效果。     

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对于气田，凡是能满足如下条件，即当ｔ＝０时，Ｇｐ＝０，以及当ｔ→∞时，Ｇｐ＝ＧＲｍａｘ的函数表达式，统称为用于气田开发指标预测的增长曲线。提出了一种预测气田开发指标的新型的增长曲线：Ｇｐ＝ＧＲｍａｘｂｔ－１ｂｔ＋ａ，推导了这种增长曲线的Ｑｇ—ｔ、ｔｍ、Ｑｇｍａｘ以及ＲＰＲ的计算公式。用图形研究了这种增长曲线Ｑｇ—ｔ关系的变化特点。根据研究发现了一个重要的关系：气田产量达到最大值Ｑｇｍａｘ时对应的累积产气量Ｇｐ（Ｑｇｍａｘ）与最大可采储量ＧＲｍａｘ的比值恒等于ａ－１２ａ，即Ｇｐ（Ｑｇｍａｘ）ＧＲｍａｘ≡ａ－１２ａ，称为Ｇｐ＝ＧＲｍａｘｂｔ－１ｂｔ＋ａ型增长曲线预测气田开发指标的ａ－１２ａ准数。提出了根据实际资料计算ＧＲｍａｘ、ｂ和ａ等参数的重复线性回归法。相国寺气田的计算实例表明这种增长曲线实际应用的重大价值。     

基于UML状态图的类状态测试

在介绍UML状态图的基础上,以面向对象软件的类作为基本测试单元,研究了基于UML状态图的类状态测试技术,并在Eclipse平台上结合Java工具用手工选择测试数据进行了实例测试.     

Review of N=1: Experimental Studies of Single Cases.

Reviews the book, N = 1: Experimental Studies of Single Cases by P. O. Davidson and C. G. Costello (see record 1971-09182-000). Books of readings are generally nothing to get excited about. This book is worth reporting, however, because it brings together for the first time a group of studies describing the application of experimental methodology to the single case. The authors believe that such an approach has bridging value as between experimental and clinical psychology, as well as providing a useful technology. The readings are organized as follows: Rationale and Method, Application in Assessment of Behavior, and Applications in Treatment. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

标准物质在食品中三氯生类及二苯甲酮类物质检测中的应用

杀菌剂三氯生类和紫外线过滤剂二苯甲酮类物质是典型的内分泌干扰物,会通过食物链进入人体从而对人类健康存在不良影响,近年来相关检测研究逐渐增多。本文综述了三氯生类和二苯甲酮类物质的毒理学数据,通过统计2015—2022年国内外关于食品中三氯生类和二苯甲酮类检测的相关文献,综述近年来三氯生类和二苯甲酮类物质在食品检测中的研究情况,汇总了三氯生类标准物质和二苯甲酮类标准物质在食品检测研究中的使用情况,对比了国内外的研究进展,并结合国家标准物质资源共享平台提供的信息,对国内三氯生类和二苯甲酮类标准物质的建设提出建议,为完善国家标准物质资源库提供数据支撑。     

变压器有载分接开关动作特性试验及典型故障分析

介绍了变压器有载分接开关动作特性试验中过渡波形判断的原理和方法,并分析了运行中的典型故障。