长距离管线监测系统的一种智能化过流防护方法

介绍了长距离管线监测系统的一种智能化过流防护方法，详细说明其电路设计原理及相关元件的选择，并与串联自复过流保护元件方式相比较，分析其整体性能，说明其具有响应速度快，安全可靠等特点。     

Sandia National Laboratories Validation Workshop: Structural dynamics application

This article specifies a virtual structural dynamic subsystem and some systems, as well as mathematical models that approximately simulate them. The purpose is to define a setting for model validations conceived by participants in the Sandia National Laboratories Validation Workshop. Some broad guidelines for the model validations are set, as well as a regulatory requirement to be satisfied by the target system. Participants are directed to present techniques for subsystem model validation, to analytically predict whether or not the regulatory requirement will be met, and to estimate the likelihood of accuracy of the prediction.     

Obituaries: Roger Todd Davis (1926-2000).

Reports the death of Roger Todd Davis (1926-2002) and how he contributed to the post-WWII development of primatology and primate laboratories, which are important precursors to the study of modern cognition and cognitive neuroscience. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

基于延迟捕获功能的血液切变率测量方法

对延迟捕获的基本原理进行了系统的分析,详细介绍了利用延迟捕获功能实现计时计数法测量转速的具体方法和实例.此方法已应用在粘度测试仪器中切变率指标的测量上,经实际使用表明具有软硬件结构简单、成本低、精度较高、运行可靠等优点,对于一些在嵌入式应用中需要测量转速指标时,可谓一种良好的方法.     

同业对标在供电所管理中的应用

在电力企业中,作为最基层单位的供电所,担负着直接向用户供电、为用户服务的重任.随着县域经济的不断发展,供电负荷持续上升,配网规模随之壮大,供电所地位日益重要.在新形势下提高供电所管理水平,成为电力企业当前管理工作中的重点.通过构建供电所同业对标平台,各供电所之间互相对标,取长补短,有效提升了供电所管理水平,促进农电事业的发展,为供电所管理提供了一种新思路和方法.     

中西体育文化比较研究

在对中西体育文化渊源进行比较分析的基础上,阐述了中西体育文化观念上的差异,并提出了中西合璧,构建现代奥运精神的设想。     

模具型腔的几种精整加工方法的对比分析

通过对模具型腔工作面的几种精整加工方法的对比分析，研究和探讨如何提高模具型腔工作面质量的方法，并提出精整加工的发展方向。     

实时极限思想的提出和应用

实时任务调度算法之间很难进行比较,而且缺少比较标准。提出具体环境下实时极限的思想,为任务调度的比较研究提供了一个尺度。并可在此基础之上进行算法自身消耗的测量。还可扩展可通行判定理论的应用范围。     

C语言程序设计题自动评分算法的研究

目前主要的C语言上机考试系统程序设计题主要采用的是结果比对评分法,这种方法并不查看考生的程序内容,不能反映考生的真实水平并且有失公允。在比较结果的评分方法基础上,增加了修复编译评分与关键代码对比评分,使评分结果更加公正、准确,使评分结果更加接近于人工阅卷,具有很好的实用价值和应用前景。     

Process and learning outcomes from remotely-operated,simulated, and hands-on student laboratories

A large-scale, multi-year, randomized study compared learning activities and outcomes for hands-on, remotely-operated, and simulation-based educational laboratories in an undergraduate engineering course. Students (N = 458) worked in small-group lab teams to perform two experiments involving stress on a cantilever beam. Each team conducted the experiments in one of three lab formats (hands-on, remotely-operated, or simulation-based), collecting data either individually or as a team. Lab format and data-collection mode showed an interaction, such that for the hands-on lab format learning outcomes were higher when the lab team collected data sets working as a group rather than individually collecting data sets to be combined later, while for remotely-operated labs individual data collection was best. The pattern of time spent on various lab-related activities suggests that working with real instead of simulated data may induce higher levels of motivation. The results also suggest that learning with computer-mediated technologies can be improved by careful design and coordination of group and individual activities.