Progress in the inductive strategy-use of children from different ethnic backgrounds: a study employing dynamic testing

This study investigated potential differences in inductive behavioural and verbal strategy-use between children (aged 6–8 years) from indigenous and non-indigenous backgrounds. This was effected by the use of an electronic device that could present a series of tasks, offer scaffolded assistance and record children’s responses. Children from non-indigenous ethnic backgrounds, starting at a lower level, profited as much from dynamic testing as did indigenous children but were unable to progress to the standard of this latter group. Irrespective of ethnic group, dynamic testing resulted in greater accuracy, fewer corrections, and reduced trial-and-error behaviour than repeated practice. Improvements in strategy-use were noted at both the group and individual level. After dynamic training, children from both ethnic groups showed a superior capacity for inductive reasoning although indigenous children subsequently used more inductive strategies. The study revealed individual differences between and within different ethnic groups and variability in the sorts of help required and subsequent strategy progression paths.     

论Web系统的自动化功能测试

在综述Web系统功能测试的基础上,重点介绍了QTP和HttpUnit的使用方法,并以邮政业务查询系统为例,探讨了HttpUnit在功能测试中的应用问题。     

Flight research using radio-controlled small airplanes

Conclusion Instrumented small airplanes for research and development of airplanes and other flight vehicles offer a viable method of study which is very cost-effective. The studies could also be extended into control and navigation. Development of small airplanes for various surveillance applications can also be effectively handled by this route. It is expected that the methods and instruments developed in the present context will find wider applications in future.     

表面机械研磨处理后低碳钢辉光膏剂等离子渗硼的研究

运用金相显微、X射线衍射分析(XRD)等技术研究表面机械研磨(SMAT)处理后低碳钢辉光膏剂等离子渗硼行为。研究结果表明,在等离子辉光炉中进行700℃×6 h渗硼后,机械研磨处理表面的渗硼深度比未处理表面有明显的提高;渗硼层均为双相FeB Fe2B组织,但表面机械研磨处理后的渗硼组织含有相对较多的Fe2B相。表明表面机械研磨处理技术有助于提高辉光膏剂等离子渗硼的深度,改善渗硼组织和性能。     

运用WAST对Web应用程序进行压力测试

压力测试是Web应用开发周期中的一个重要步骤.使用WAST工具对Web进行压力测试,能检测出服务器配置潜在问题.以及Web应用程序的潜在缺陷.同时,可以获得重要的性能数据,为代码优化、硬件配置、系统软件升级提供必要的依据.     

地面搜索方式模型

在地震后震区地面交通和通讯系统严重瘫痪的情况下,为尽快对受灾人员进行救助,救灾指挥部紧急派出多支小分队进行地面搜索,并且需要为各小分队设计搜救路线。本文着手解决搜救队伍的搜救路线设计问题,采取平地分格法,从“S”型和“回”字型方式考虑,按照转弯次数越少耗费时间越短的原则对搜索队伍的行进路线进行安排,以达到快速、均衡地完成搜索任务。     

Problems and Possible Solutions in Reading Comprehension Testing

The paper deals with the problems in reading testing papers. The author proposes some possible solutions, such as covering more cognitive skills being tested, increasing more text types, adding some other testing item types.     

利用卫星地球重力场模型研究新疆壳幔结构

根据中国卫星地球重力场模型ＩＧＧ９３Ｅ，计算出新疆地区不同阶窗的卫星重力异常和分层面密度异常，并对异常场源深度进行了讨论．同时，利用计算结果结合其它地球物理资料，综合分析了新疆地壳－上地幔的结构及地球动力学特征．结果表明：新疆地区壳幔结构具有明显的纵向分层和横向分块特点，横向不均匀性在３７阶以上的高阶场中反映十分明显．其中，塔里木地台中央地段上地幔上隆，岩石图呈稳定块体特征；地台周缘则为壳幔陡变带，幔源物质上涌造成部分熔融，地台边缘呈断块分离、升降．     

基于RTL行为模型的测试产生及时延测试方法

寄存器传输级(RTL)测试产生及时延测试是当今集成电路(IC)测试技术中亟待解决的问题和研究的热点.首先从IC逻辑测试的测试产生和IC时延测试方法这两个方面系统地综述了测试产生和时延测试领域迄今为止的主要研究成果.在RTL行为描述的测试产生方面,提出了新的RTL行为模型的描述方法行为阶段聚类描述,并提出了基于聚类的测试产生技术.将这些技术集成到RTL级ATPG系统ATCLUB中,在提高测试产生效率及缩短测试长度方面效果显著.在IC时延测试方面,提出了一种新的可变双观测点的时延测试方法.基于该方法提出了新的时延故障诊断方法,实现和完善了可变双观测点的时延测试系统DTwDO.DTwDO提供了从时延测试到故障诊断等一系列测试工具,有效减少了测试通路数,提高了故障覆盖率,并有很高的故障定位成功率.     

实现CSI测评的P-M模糊测度空间的构建探析

本文在经典的CSI测评方法的基础上，依据CSI测评的内在机理，从质量工程学的角度提出了P——M模糊测度空间的构思，以此空间为背景实现CSI测评。