跳频多址系统盲空时干扰消除算法研究     

刘传清 《襄樊学院学报》2007,28(11):44-47

提出了适合无中心控制的对等网络的盲空时自适应干扰消除算法．本算法利用检测信号功率恒定的特点，采用了两个滤波器组，当其中一个工作时，另一个开始调整权系数，从而提高了收敛速度，避免了跳频频率变化带来的波束估计误差．仿真结果表明，提出的盲自适应算法可以明显提高输出信号SINR增益．  相似文献   

近年来我国高校学术权力与行政权力关系研究述评   总被引：2，自引：0，他引：2  

甘金球 《煤炭高等教育》2008,26(6):14-16

学术权力与行政权力的关系的研究观点概括为四种：冲突论、协调统一论、对立统一论和不对称论。学者们主要从理念、制度、机制三个方面设计了协调行政权力与学术权力关系的基本思路。多数学者认为,通过强化学术权力,建立起学术权力与行政权力相互协调的运行机制是协调两者关系的最直接有效的办法。从多元权力结构视角研究两者之间的关系是研究的趋势,也符合我国高校内部现存的权力结构。  相似文献   

Prevalence of family violence and mental health and their relation to peer victimization: A representative study of adolescent students in Southwestern Uganda     

《Child abuse & neglect》2019

BackgroundDespite global efforts to end violence against children in all settings, reports reveal that violence against children is still highly prevalent, especially in low-and middle- income countries. Violence in childhood is associated with a host of negative outcomes, and exposure in one setting can easily spill over to other contexts. For instance, exposure to family violence was not only related to mental health problems but also seems to be a risk factor for peer victimization.ObjectivesThe present study aimed to examine the prevalence of maltreatment within the family and adolescents’ mental health problems and their relation to peer victimization. We also aimed to gain new insights into the perceptions of adolescents concerning maltreatment within their families.MethodsData were collected from April to November 2017 in a representative sample of 702 students from 12 public secondary schools in Southwestern Uganda who responded to self-administered questionnaires.ResultsOverall, 95% of the students experienced at least one type of family violence in the past month. Students (81.3%) had endorsed some level of acceptance of violent discipline as a valid strategy in response to any misbehavior. Maltreatment within the family was related to peer victimization (β = .47) and this relation was mediated by mental health problems (0.002, 95%-CI: 0.001–0.004).ConclusionsThe results indicated a high prevalence of maltreatment within Ugandan families that was associated with peer victimization. This underscores the need to implement interventions aiming to reduce maltreatment and violence in order to protect children from potentially negative consequences.  相似文献   

Integration of technical vocabulary into peer observation of teaching for Taiwanese elementary school English teachers’ professional learning     

Chin-Wen Chien 《Education 3-13》2019,47(2):176-190

This study explored the integration of technical vocabulary into pre-observation conferences and its influence on English teachers’ professional learning and discussion in their post-observation conferences. The conceptual framework based on Harvey [2011. “A Sociocultural-Theory-Based Study of the Impact of Mediation During Post-observation Conferences on Language Teacher Learning.” Unpublished doctoral diss., University of South Florida] and Goe, Biggers, and Croft [2012. Linking Teacher Evaluation to Professional Development: Focusing on Improving Teaching and Learning. Denver, CO: National Comprehensive Center for Teacher Quality] was used to analyse the questionnaire, audio recordings, and documents collected in seven peer observations of teaching in Taiwan. This study has two major findings. First, English teachers regarded the technical vocabulary as stimuli for their professional learning; however, the range of technical vocabulary used during the post-observation conferences was limited. Second, three major factors affected their use of technical vocabulary. A new model was proposed in order to effectively integrate technical vocabulary into peer observations of teaching for elementary school English teachers’ professional learning.  相似文献   

The Review of Vocational Qualifications, 1985 to 1986: An Analysis of its Role in the Development of Competence-based Vocational Qualifications in England and Wales     

George Hargraves 《British Journal of Educational Studies》2000,48(3):285-308

A significant historical role in the development of competence-based vocational qualifications in England and Wales is customarily ascribed to the 1985 to 1986 Review of Vocational Qualifications (RVQ), the body which invented the National Vocational Qualification (NVQ). This paper analyses the RVQ's internal debates. The paper demonstrates that the RVQ proposed only the general principles of a structure and an administration for a reformed vocational qualifications system. The RVQ did not address in detail either the definition of occupational competence or the curriculum and assessment models to be embodied in the NVQ. In the light of this analysis, the paper re-evaluates the role of the RVQ in the development of competence-based vocational qualifications, and suggests some potentially fruitful areas for future research.  相似文献   

国内学业不良研究的回顾与反思   总被引：7，自引：0，他引：7  

曾守锤  吴华清 《山东教育学院学报》2003,18(6):14-16

对学业不良研究献的统计和分析可以促进该领域的健康发展。章从杂志、年份、研究的内容、对象、方法和作的单位分布等方面，对1990～2002年间学业不良的研究献进行了统计分析。结果发现，与十几年前相比，国内学业不良的心理学研究已取得了较大的进步，但同时也存在一些不足之处。  相似文献   

Learning design and learning analytics in mobile and ubiquitous learning: A systematic review     

Gerti Pishtari  María J. Rodríguez-Triana  Edna M. Sarmiento-Márquez  Mar Pérez-Sanagustín  Adolfo Ruiz-Calleja  Patricia Santos  Luis P. Prieto  Sergio Serrano-Iglesias  Terje Väljataga 《British journal of educational technology : journal of the Council for Educational Technology》2020,51(4):1078-1100

Mobile and Ubiquitous Learning (m/u-learning) are finding an increasing adoption in education. They are often distinguished by hybrid learning environments that encompass elements of formal and informal learning, in activities that happen in distributed settings (indoors and outdoors), across physical and virtual spaces. Despite their purported benefits, these environments imply additional complexity in the design, monitoring and evaluation of learning activities. The research literature on learning design (LD) and learning analytics (LA) has started to deal with these issues. This paper presents a systematic literature review of LD and LA, in m/u-learning. Apart from providing an overview of the current research in the field, this review elicits elements of common ground between both communities, as shown by the similar learning contexts and complementary research contributions, and based on the research gaps, proposes to: address m/u-learning beyond higher education settings, reinforce the connection between physical and virtual learning spaces, and more systematically align LD and LA processes.  相似文献   

谈谈高三英语复课工作中的基础知识复习     

乔红涛 《中国教育发展研究杂志》2007,4(3):126-128

文章针对高三英语复习的词汇复习、句型复习、语法复习、日常交际用语归纳以及课文整体复习几方面进行阐述。笔者指出：在高考复课中，要反对题海战术，提倡精讲精练，通过典型试题分析，培养学生举一反三、触类旁通的能力。  相似文献   

Practicing Social Skills Training for Young Children with Low Peer Acceptance: A Cognitive-Social Learning Model     

Dong Hwa Choi  Juhu Kim 《Early Childhood Education Journal》2003,31(1):41-46

Peer acceptance during early childhood is related to children's academic achievement, adjustment in school, and even psychological well-being in adulthood. Children who experience low peer acceptance exhibit socially inappropriate behavior patterns, which are associated with irrelevant patterns of information processing. Therefore, as a way of helping children with low peer acceptance, a cognitive-social learning model of social skills training has been used because the model focuses on cognitive changes as well as behavioral changes. Three parts of the social skills training—enhancing skill concepts, promoting skill performance, and fostering skill maintenance/generalization—are discussed. In order to be successful, a trainer should understand the training model as well as behavioral patterns of children with low peer acceptance to provide theory-based and individualized feedback to each participant.  相似文献   

电子学习与远程教育的实践、创新、未来——第6届“Learning Futures Festival”在线国际会议综述     

谭明杰 《现代远程教育研究》2011,(4):56-60

2011年4月第6届＂Learning Futures Festival＂在线国际会议召开。会议采用英国、美国、澳大利亚三个时区国家接力的方式完成。与会专家学者特别关注开放教育资源及Web2.0背景下的教育创新。未来10年全球高等教育面临巨大的增长需求,开放教育资源运动的推进,将可能出现开放教育资源大学。开放共享理念逐步深入人心,Web2.0在教育和企业领域的广泛应用将改变人们的学习和工作环境,学习者和企业员工应当提升自我的数字素养技能以激发自身的创新潜能。我国远程教育面临资源可重用性较低和开放性不足等问题,在今后的发展中应借鉴发展中国家远程教育院校和企业学习的成功经验,加强教育资源开放共享的程度,整合电子学习技术在远程教育中的创新应用,以满足学习者个性化的学习需求。  相似文献