矿井多风机风压优化计算机调节系统设计

经过对多风机通风网络分析,利用现有的VNETPC模拟程序,建立了多风机风压优化计算机调节系统.该系统允许计算机自动调整多风机风压,直到各用风地点获得最佳可接受的风量分配为止.     

B/S架构中基于HTML组件的WEB打印技术

一直以来B/S架构下的打印问题都是B/S系统开发中的难题,本文逐一对现有B/S架构打印方法进行了分析,针对它们的缺陷,提出丁一种基于HTML组件的更有效和更精确的打印方法,详细介绍了其原理,并给出了具体的实现方法,实践表明该方法使用效果良好.     

便携式多参数监护仪的研制

本介绍了一种便携式人体多参数监护仪的研制方法，包括：心电检测、血压检测、血氧饱和度检测、呼吸检测模拟电路的设计，以及存储单元、A／D转换器、USB通讯口等接口模块的设计。     

Voices of teacher candidates of color on white race evasion: ‘I worried about my safety!’

Abstract

This qualitative study investigated the negative impacts minority teacher candidates receive from white teacher candidates in a required multicultural education class. The findings reveal that four teacher candidates of color had difficulty positioning themselves among the overwhelming silencing power of whiteness in the class. The white students were tactful at evading power and race and flattening the existing hierarchical power relations through the discourses of colorblindness and by preying on the minority instructor. Their understanding of diversity was also shallow. On the other hand, the teacher candidates of color were afraid that they might be labeled as the ones who spoke up against the white students and fearful of the possibility of retaliation and ostracism from the white peers. It seems that the teacher education program’s structure allowed the white candidates to impose strong negative peer pressure on the teacher candidates of color.     

试论提高我国科技竞争力的若干问题

科技竞争力是当前国际国内普遍关注的一个问题.我国科技竞争力仍比较弱,在发展科学技术方面还存在若干问题.发展科学技术,提高科技竞争力要从增强科技意识、进行自主创新、加强对科技发展和运用工作的领导、健全企业技术创新机制、强化知识产权管理、科技投入多元化、加快发展高科技企业及提高全民科学文化素质等方面努力.     

富氧条件下CuO/TiZrO4催化还原NO的研究

用共沉淀法制备TiZrO4复合氧化物，并作为载体。采用等体积浸渍法担载CuO制成CuO／TiZrO。催化剂，考察其在富氧条件下以CH4作还原剂催化还原NO的性能，研究了CuO负载量、反应温度对NO转化率的影响。结果表明CuO负载量为20％时催化活性最好，反应温度为200℃时，NO转化率可达65％。     

新课程改革中教师心理压力探析

新一轮基础教育课程改革在为教师提供更为广阔的发展空间的同时,也给教师的心理带来极大的压力,主要表现为由新旧理念的撞击、教师权威的重构、教师素质的重塑、课程资源的匮乏、教育评价的滞后等因素而引发的矛盾、抵制、失落、沮丧、危机、恐慌等消极心理反应。正确理解教师在新课程实施中产生的这些心理压力,并采取有效的措施缓解其心理压力能确保课程改革的有效实施。     

数据库的发布

当前，数据库技术在Internet／Intranet条件下发生了巨大的变化，数据库的网络应用和实现方式也在飞速发展。从传统的发布技术，到现在的B／S（Browser／Server）结构，再到新兴的自动发布技术，web数据库发布技术在逐步走向成熟。     

Multimedia and Online Video Case Studies for Preservice Teacher Preparation

Case studies have been used successfully as a part of teacher education. There are many possibilities in extending the impact of case studies through the use of technology. Video and the Internet could enable demonstration of more examples, dissemination beyond the walls of the classroom, and discussion between geographically dispersed preservice teachers. Several projects are now investigating the possible ways that technology might enhance or extend text case studies. After exploring four existing products, four essential elements for video case studies are proposed. As video case studies move to the Internet, additional issues arise and these are also explored.     

利用网络协议分析器分析TCP/IP协议

本文简单探讨了tcp／ip协议，并利用网络协议分析器对Ieternet网络中数据包实例进行了解析。