体内医疗微型机器人的外磁场驱动与控制系统研究     

王辉静  简小云 《深圳信息职业技术学院学报》2006,4(4):10-13

本文以胶囊状体内医疗微型机器人为研究对象,着眼于无线胶囊内窥镜的外磁场主动驱动,在分析人体消化道能动性特点的基础上,设计了一种外磁场驱动方案,建立了胶囊状微机器人外磁场驱动的动力学模型,同时给出了驱动控制系统方案设计,为微型机器人在人体消化道内进行无损检查和微创手术提供了一种设计思路。  相似文献   

学生贷款偿还负担的国际比较及我国的实证研究   总被引：15，自引：0，他引：15  

沈华  沈红  黄维 《比较教育研究》2004,25(10):38-43

各国在研究学生贷款的偿还问题时,对学生所承担债务负担的讨论是必不可少的.学生还款负担的轻重是衡量学生贷款方案是否科学合理的重要指标.本文对学生的贷款偿还负担进行国际比较,并对我国学生的还款负担作了实证分析;在阐述影响还款负担的主要因素的基础上,对我国国家助学贷款偿还模型的改进提出了一些合理化建议.  相似文献   

基于三维软件的《机械设计基础》课程改革与资源开发     

彭广威 《教育教学论坛》2020,(3):112-113

针对高职院校《机械设计基础》课程传统教学方法的弊端,文章分析了课程内容与知识特点,提出基于三维软件应用的课程项目化教学设计与课程资源开发模式,对机械类专业基础课程的项目化教学改革与资源开发具有一定的参考价值。  相似文献   

Building the field’s knowledge of teaching and learning: Centering the socio-cultural contexts of observation systems to ensure valid score interpretation     

《Studies in Educational Evaluation》2023

The articles in a special issue of this journal, Merits and Limitations of Researching Teaching Quality More Synergistically, grapple with the assertion that the field does not share a common language or structural decomposition of teaching and that the current range of frameworks and observation systems used by researchers jeopardizes the accumulation of knowledge in the field. We analyze these arguments from a socio-cultural perspective, theorizing that teaching and the improvement of teaching occur in socially situated contexts that give meaning to all research frameworks and measurement tools. Rather than asking whether a common framework of teaching might be useful, we ask when such a framework might be useful, when can such efforts be limiting, and why? Building on contemporary validity theory, we bring the role of context back into the current conversation. We suggest that while there are important affordances of a unified framework of teaching quality, such a framework will be unable to fully address some of the issues identified in this special issue. For practical, theoretical, empirical, and socio-cultural reasons, researchers will require multiple frameworks and associated observation systems to support the study and improvement of teaching across contexts.  相似文献   

高炉专家系统在本钢五号高炉的应用   总被引：1，自引：0，他引：1  

冯震  董世泽 《辽宁科技学院学报》2003,5(4):29-31

介绍了本钢5^#高炉专家系统的主要内容及应用概况，通过现场应用，该系统运行可靠，对炉况起到了准确预测及有效控制的作用。  相似文献   

职业院校“情境——达标”式实训教学模式研究   总被引：6，自引：0，他引：6  

顾力平 《教师教育研究》2005,17(5):59-62

经济发展,需要职业教育规模发展,更需要其办学质量提高,而质量的评判需“社会化定位”。要克服职业院校“高分低能”、“高证低能”的现象,必须提高实训教学质量。以“三化”为主要内容的实训教学模式,抓住培养学生职业素质和能力的主线,通过在整个教学过程中创设职业情境的方式,达到真正提高实训教学质量的目的。  相似文献   

相对弱势区域发展模式构想——从区域空间格局看福建海峡西岸经济区     

舒展 《莆田学院学报》2005,12(4):14-17

以福建海峡西岸经济区为个例,分析经济相对弱势区域发展模式,提出福建海峡西岸经济区的发展模式从空间格局来看应该采用“大福建”网络式模式:科学判断区域主导产业,创造“极化效应;”正确处理区际关系,利用强势区域的“扩散效应”。  相似文献   

价值与价值评价：主客体关系的深层思考   总被引：1，自引：0，他引：1  

朱志君 《辽宁师范大学学报(社会科学版)》2003,26(1):1-6

价值是属于主客体之间深层关系的范畴，它所揭示的是主体需要与客体属性之间的一种特定关系。价值评价是价值主体对客体属性能否和在多大程度上满足自身需要的一种肯定或否定的判断。价值与价值评价，从更深层意义上反映着主客体之间的关系，也是价值哲学研究的重要基础理论问题。建立科学的价值与价值评价观，是建立马克思主义价值哲学体系的重要前提。  相似文献   

浅析会计准则的制定模式——规则导向才是发展趋势     

吴治荣 《昆明大学学报》2007,18(A01):26-27,36

会计准则制定模式是会计理论研究的重点之一。通过国内、国外相应事例，对会计准则制定的原则性导向和规则性导向进行对比研究，认为规则性导向优于原则性导向，是准则制定模式的发展趋势，也是会计界的努力方向。  相似文献   

Zoo educators face common and specific demands and resources: an application of the JD-R model     

Daniela Sellmann  Valerie Beckmann  Sarah Panzlaff  Susanne Menzel 《Environmental Education Research》2019,25(1):92-114

Zoo educators are important communicators of the targets in education for sustainable development and therefore carry great responsibility for global environmental change. However, German zoo educators form a heterogeneous group, many of them working in non-permanent job positions and facing multiple challenges at work. Applying the job demands-resources model, our study aims at revealing factors influencing zoo educators’ job strain. Our data from eight in-depth interviews with German zoo educators confirm that they perceive common factors known from other studies, such as demands (e.g. workload) and resources (e.g. supervisory support). Besides this, job-specific factors were identified (e.g. working with humans and animals). The demands zoo educators mentioned could be classified either as job hindrances (e.g. lack of equipment) or job challenges (e.g. learning). Future studies should quantify these results to facilitate the development of appropriate measures to reduce educators’ job strain, thus enhancing their performance.  相似文献