基于MATLAB的大延迟系统的PID控制与Smith预估器控制的仿真分析     

俞倩兰 《常熟理工学院学报》2006,20(6):67-69

介绍了PID控制与Smith预估器的原理及特点，仿真实例验证了Smith预估器对大延迟系统的有效控制作用。  相似文献   

多时滞非线性中立型Lurie系统的绝对稳定性     

赵秀元 《商丘师范学院学报》2001,17(6):36-38

利用一般的Lyapunov泛函方法，讨论了具有多时滞非线性项的中立型一般Lurie控制系统的绝对稳定性问题，并给出了一些实用的代数判据。  相似文献   

对比修辞:英汉书评比较   总被引：2，自引：0，他引：2  

柳淑芬 《广东教育学院学报》2005,25(1):104-108

书评，作为一种新型写作体裁，同样反映化差异。英美学术书评侧重描述，汉语学术书评则侧重评价；英美书评批评性较强，汉语书评批评性却较弱。两种书评在修辞结构和评价策略上的差异与其不同化背景和风俗习惯有很大联系。  相似文献   

英语语法三大主要流派述评     

徐畅贤 《湖南城市学院学报》2001,22(5):100-102

英语语法研究经历了几个阶段,出现了若干不同的流派,其中最有影响的是传统语法、结构语法和转换生成语法.这三种语法理论,各有优劣.它们都对语言学的研究和发展作出了各自的贡献,产生了不可磨灭的影响.  相似文献   

A review of ‘psychology and the study of education: critical perspectives on developing theories’     

Christopher P. Dwyer 《Irish Educational Studies》2019,38(2):213-217

This review examines Psychology and the Study of Education: Critical Perspectives on Developing Theories, a collection of academic articles edited by Cathal Ó Siochrú. The collection comprehensively considers wide-ranging topics pertinent to the psychology of education, with a target audience of educators and students wishing to learn more about psychology. The review evaluates the collection as an integrated work of entries and analyses each component chapter; recognising the success of the collection with respect to its aim of challenging readers to critically reflect upon and consider the value of psychology in both understanding and influencing education. The book transcends the common formula of academic article collections in this area by being presented in a somewhat conversational manner, making it both interesting and accessible. The book is recommended for anyone interested in the psychology of education and for anyone who values the advancement of learning and teaching.  相似文献   

校阅在CAT与FIT中对受测者行为表现与状态焦虑水平的影响     

陈燕  胡洁 《考试研究》2007,(1)

校阅(review)对CAT中受测者心理影响的研究有利于CAT的推广应用。J.Oleat等研究者在CAT(computerizedadaptivetest,计算机自适应性测验)与FIT(fixed-itemtest,固定项目测验)中,将校阅(review)对受测者行为表现与状态焦虑水平的影响作了比较研究。实验结果表明,在允许校阅的环境中,受测者正确反应与被估计的能力水平显著增加,并且状态焦虑水平下降。本文对J.Oleat等研究者的主要研究成果进行了详细的评述,并进一步探讨了在CAT中增设校阅(review)环境的重要性和可能性。  相似文献   

近年来我国教育产业问题研究述评   总被引：1，自引：0，他引：1  

郑松涛 《河北师范大学学报(教育科学版)》2001,3(1):62-68

近年来各界学围绕教育的产业属性，教育能否产业化，发展教育产业的意义与作用等问题，进行了较广泛的讨论，观点见仁见智，莫衷一是。  相似文献   

An empirical review of anonymity effects in peer assessment,peer feedback,peer review,peer evaluation and peer grading     

Ernesto Panadero  Maryam Alqassab 《Assessment & Evaluation in Higher Education》2019,44(8):1253-1278

Abstract

Peer assessment has proven to have positive learning outcomes. Importantly, peer assessment is a social process and some claim that the use of anonymity might have advantages. However, the findings have not always been in the same direction. Our aims were: (a) to review the effects of using anonymity in peer assessment on performance, peer feedback content, peer grading accuracy, social effects and students’ perspective on peer assessment; and (b) to investigate the effects of four moderating variables (educational level, peer grading, assessment aids, direction of anonymity) in relation to anonymity. A literature search was conducted including five different terms related to peer assessment (e.g., peer feedback) and anonymity. Fourteen studies that used a control group or a within group design were found. The narrative review revealed that anonymous peer assessment seems to provide advantages for students’ perceptions about the learning value of peer assessment, delivering more critical peer feedback, increased self-perceived social effects, a slight tendency for more performance, especially in higher education and with less peer assessment aids. Some conclusions are that: (a) when implementing anonymity in peer assessment the instructional context and goals need to be considered, (b) existent empirical research is still limited, and (c) future research should employ stronger and more complex research designs.  相似文献   

一类高阶时滞偏微分方程的解的渐近性     

赵修忠 《衡阳师范学院学报》2007,28(3):21-24

研究了一类高阶时滞偏微分方程的解的渐近性,得到了其解的一些渐近性质,其结果推广了有关文献。  相似文献   

Anti-racist moral education: A review of approaches,impact and theoretical underpinnings from 2000 to 2015     

Ingrid Lynch  Sharlene Swartz  Dane Isaacs 《Journal of moral education》2017,46(2):129-144

Racism is a moral issue and of concern for moral educators, with recent social movements such as #BlackLivesMatter highlighting how far we are from obliterating racial oppression and the unearned privilege whiteness confers. To contribute to a more formalised approach to anti-racist moral education, this article systematically reviews 15 years of peer-reviewed scholarship concerned with anti-racist education, to establish the definitions and aims of anti-racist education drawn on, the theoretical frameworks underpinning these, the methods used in education efforts, and their intended impact. It also considers the geo-political aspects of knowledge production in the field, such as author country location and implementation context of empirical studies. It concludes with implications for moral education in classroom and community contexts and advocates for anti-racist moral education that comprise three interconnected components—making visible systemic oppression (visibilising), recognising personal complicity in oppression through unearned privilege (recognising) and developing strategies to transform structural inequalities (strategising).  相似文献