不确定时滞系统的状态反馈保性能控制器设计     

齐春燕 《内江师范学院学报》2009,24(4):25-28

研究了状态和控制都滞后的不确定连续时滞系统的状态反馈保性能控制器设计．利用Lyapunov稳定性理论,提出了状态反馈保性能控制器存在的充分条件,并采用线性矩阵不等式处理方法,给出了保性能控制律的构造方法．  相似文献   

关联理论在英译导游词中的应用     

全娜 《金华职业技术学院学报》2009,9(2):48-49

英译景点导游词是“以游客为出发点”和“以传播中国文化为取向”的。在旅游交际中。导游员把自身跨文化知识和语用学理论中的关联理论运用到英译导游词中（以桂林导游词为例）,顺应游客的心理,可以帮助游客达到最佳关联,实现旅游审美价值和消费价值。  相似文献   

Behavioural sequential analysis of using an instant response application to enhance peer interactions in a flipped classroom     

Ting-Chia Hsu 《Interactive Learning Environments》2018,26(1):91-105

To stimulate classroom interactions, this study employed two different smartphone application modes, providing an additional instant interaction channel in a flipped classroom teaching fundamental computer science concepts. One instant interaction mode provided the students (N?=?36) with anonymous feedback in chronological time sequence, while the other showed their feedback by “like” ranking (N?=?26). The behavioural patterns of undergraduates using these two different modes were compared. The results showed that the like-ranked feedback deepened the interaction between asking and answering questions, reduced the number of irrelevant messages, and increased attention to questionable messages. The students using the like-ranking mode also received more encouragement during the flipped classroom discussion activities.  相似文献   

Adaptive Equilibrium Regulation: Modeling Individual Dynamics on Multiple Timescales     

Kevin L. McKee  Lance M. Rappaport  Steven M. Boker  Debbie S. Moskowitz  Michael C. Neale 《Structural equation modeling》2018,25(6):888-905

Damped Linear Oscillators estimated by 2nd-order Latent Differential Equation have assumed a constant equilibrium and one oscillatory component. Lower-frequency oscillations may come from seasonal background processes, which non-randomly contribute to deviation from equilibrium at each occasion and confound estimation of dynamics over shorter timescales. Boker (2015) proposed a model of individual change on multiple timescales, but implementation, simulation, and applications to data have not been demonstrated. This study implemented a generalization of the proposed model; examined robustness to varied timescale ratios, measurement error, and occasions-per-person in simulated data; and tested for dynamics at multiple timescales in experience sampling affect data. Results show small standard errors and low bias to dynamic estimates at timescale ratios greater than 3:1. Below 3:1, estimate error was sensitive to noise and total occasions; rates of non-convergence increased. For affect data, model comparisons showed statistically significant dynamics at both timescales for both participants.  相似文献   

The ideology of student engagement research     

Alex Buckley 《Teaching in Higher Education》2018,23(6):718-732

In a series of recent papers, Nick Zepke has criticised those researching student engagement in higher education for uncritically supporting neoliberalism. The current highly politicised nature of higher education means that clarity about the political implications of engagement research is crucial. This conceptual paper argues that in focusing on literature on students’ engagement in learning, Zepke overlooks another substantial body of engagement literature, on students’ participation in decisions about learning and teaching. By exploring the political alignment of two of the key models used to conceptualise students’ engagement in decision-making, the paper argues that a central element of the research into student engagement is in fact directly opposed to neoliberal approaches to higher education. Student engagement has been deployed both for and against neoliberalism. Zepke has argued that the research on engagement sides with neoliberalism; I show that the research that focuses on student engagement in decision-making supports the opposition.  相似文献   

Trainee teachers’ experiences of classroom feedback practices and their motivation to learn     

Zhengdong Gan  Honghan Nang  Kejuan Mu 《师资教育杂志》2018,44(4):505-510

While different theoretical frameworks have been proposed to characterise the nature of feedback and the conditions under which feedback contributes to student learning, few empirical studies have examined the usefulness of these theoretical frameworks to understand student feedback experiences in classrooms particularly in a pre-service context. This article explores what classroom feedback practices trainee teachers experience, and how their feedback experiences relate to their learning motivation. The paper presents the results of questionnaire surveys conducted with 276 pre-service ESL trainee teachers in a BEd English education programme. The study found that trainee teachers in this study experienced predominantly activity-based feedback and teacher evaluation feedback, while peer/self feedback and longitudinal-development feedback were relatively infrequently used in the classroom. However, peer/self feedback and longitudinal-development feedback appeared to be most powerful in predicting positive motivational processes, followed by activity-based feedback and teacher evaluation feedback.  相似文献   

广告话语之语用学解释     

梁婧玉 《大同职业技术学院学报》2010,(6)

广告语是一种重要的语言现象。借用言语行为理论从言内行为、言外行为和言后行为三种不同的阶段性行为可有效地解释了广告语的劝说功能。借用关联理论从认识环境关联的暗示性的角度可有效地解释了引用名言名句或流行语的广告语。  相似文献   

新员工工作不安全感与组织政治化的关系研究——反馈寻求策略与权力距离的影响     

王宁  周密  赵西萍 《软科学》2017,(6):76-80

探讨新员工典型的工作不安全感与组织政治化的关系,并验证反馈寻求策略的中介作用;同时结合文化背景,辨析权力距离感知对这一关系的调节作用.208份数据分析结果表明:询问组织外部朋友在工作不安全感与组织政治化关系间起部分中介作用;权力距离感知对工作不安全感与反馈寻求策略关系的调节作用被证明.  相似文献   

基于关联理论分析引文产生的认知机制     

周秋菊  冷伏海 《图书情报工作》2015,59(7):77-82

[目的/意义]用认知语言学的关联理论解释学术论文写作过程中引文产生的认知机制.[方法/过程]指出"关联性"是引用产生的前提条件和必备要素,同时也指出关联理论可以作为"知识传承"的理论基础.[结果/结论]交际者(作者、读者)通过引文为交际双方构建共同的认知语境.双方认知语境信息或假设的趋同过程,是交际双方根据引文追寻最大和最佳关联的过程.  相似文献   

基于本体的国史知识检索平台构建研究     

王颖  张智雄  孙辉  雷枫 《图书情报工作》2015,59(16):119-128

[目的/意义]构建国史知识检索平台,提高用户获取国史知识的效率,促进国史宣传和教育。[方法/过程]提出基于本体的国史知识检索平台构建思路与总体框架,在构建国史本体知识库的基础上,采用Neo4j数据库作为RDF数据仓储,创建基于Solr的实例索引、三元组索引和词条索引,针对多种检索需求设计实现检索引擎的执行流程、检索式构造方法以及查询处理算法,并为国史知识展示设计可视化实现方式。[结果/结论]构建国史知识检索平台,提供实体检索、查询问答、关联检索、时序检索及语义资源浏览等检索与浏览服务。该平台框架及关键技术实现方案可为面向领域知识的深度检索服务提供重要参考。  相似文献