数学建模思想融入大学数学教学内容的认识与实践     

曹殿立  叶耀军  李炳军  孙成金  温建 《周口师范学院学报》2007,24(5):54-55

将数学建模思想融入大学数学教学内容之中，能够有效地培养大学生运用数学知识解决实际问题的能力.本文探讨了将数学建模思想融入大学数学教学内容之中应遵循的目标和原则，并介绍了作者的改革实践，以期为高等院校大学数学的教学改革提供参考.  相似文献   

Models and Paradigms in Kuhn and Halloun     

Paul Joseph Wendel 《Science & Education》2008,17(1):131-141

In Modeling Theory in Science Education, Halloun (2004) adopts the word ‘paradigm’, but his use of the term is radically different from that of Kuhn. In this paper, I explore some of the differences between Kuhn’s paradigms and Halloun’s paradigms. Where Kuhn’s paradigms are public, community-defining exemplars of practice, Halloun’s paradigms are private, individualized ways of thinking. Where Kuhn writes of the paradigm shift as a revolutionary, vision-altering conversion experience, Halloun writes of a gradual evolution from one way of thinking to another and an easy back-and-forth switch between paradigms. Since Kuhn’s paradigms are self-enclosed and incommensurable, there is no objective standard by which one paradigm can be shown to be superior to the other. But Halloun uses ‘viability’ as a standard for paradigm choice. Underlying all of this is the more basic question of whether the history of science is an appropriate metaphor for student progress in the classroom. I conclude with some brief thoughts on this question.  相似文献   

服务机器人多通道人机交互感知反馈工作机制及关键技术   总被引：1，自引：0，他引：1  

赵其杰 《上海大学学报(英文版)》2006,10(3)

With the increasing of the elderly population and the growing health care cost, the role of service robots in aiding the disabled and the elderly is becoming important.Many researchers in the world have paid much attention to healthcare robots and rehabilitation robots.  相似文献   

An efficient method for tracing planar implicit curves   总被引：1，自引：0，他引：1  

YU Zheng-sheng CAI Yao-zhi OH Min-jae KIM Tae-wan PENG Qun-sheng 《浙江大学学报(A卷英文版)》2006,7(7):1115-1123

INTRODUCTION Tracing a planar implicit curve f(x, y)=0 on a rectangular region [xl, xr]×[yb, yt] is of great interest in Computer-Aided Design and Computer Graphics. While parametric curves are easy to plot, plotting implicit curves is a challenging problem. Planar im- plicit curve plotting method can be classified into two categories (Shou et al., 2005; Martin et al., 2002; Lopes et al., 2002). In the first category are subdivi- sion methods (Shou et al., 2005; Martin et al., 2002) …  相似文献   

The Misspecification of the Covariance Structures in Multilevel Models for Single-Case Data: A Monte Carlo Simulation Study     

Mariola Moeyaert  Maaike Ugille  John M. Ferron  S. Natasha Beretvas  Wim Van den Noortgate 《Journal of Experimental Education》2016,84(3):473-509

The impact of misspecifying covariance matrices at the second and third levels of the three-level model is evaluated. Results indicate that ignoring existing covariance has no effect on the treatment effect estimate. In addition, the between-case variance estimates are unbiased when covariance is either modeled or ignored. If the research interest lies in the between-study variance estimate, including at least 30 studies is warranted. Modeling covariance does not result in less biased between-study variance estimates as the between-study covariance estimate is biased. When the research interest lies in the between-case covariance, the model including covariance results in unbiased between-case variance estimates. The three-level model appears to be less appropriate for estimating between-study variance if fewer than 30 studies are included.  相似文献   

Comparing Student Performance and Growth in 2- and 4-Year Institutions     

Strauss  Linda C.  Volkwein  J. Fredericks 《Research in higher education》2002,43(2):133-161

This study examines the organizational characteristics of 51 higher education institutions in relationship to student performance and growth. The study first finds that organizational measures of mission, size, wealth, complexity, and selectivity are statistically represented by the 2-year versus 4-year college mission. Findings indicate that 2-year and 4-year campuses indeed do exert significantly different influences on undergraduate GPA and self-reported intellectual growth. Next, the study uses both OLS regression and HLM to examine these influences. High school percentile rank and college classroom experiences are better predictors of Cum GPA at 4-year institutions, while student effort is a better predictor of GPA at 2-year institutions. Whereas the most important predictors of Cum GPA include precollege measures such as high school percentile rank and SAT score, the most influential predictors of student intellectual growth are campus experiences including classroom vitality, peer support, student effort, commitment, and involvement. Controlling for all other variables, students at 2-year institutions receive higher grades, and students at 4-year campuses experience more growth.  相似文献   

Modeling the influences of upper-elementary school students’ digital reading literacy,socioeconomic factors,and self-regulated learning strategies     

Shin-Feng Chen 《Research in Science & Technological Education》2017,35(3):330-348

Background: Reading is an interactive and constructive process of making meaning by engaging a variety of materials and sources and by participating in reading communities at school or in daily life.

Aim: The purpose of this study was to explore the factors affecting digital reading literacy among upper-elementary school students.

Method: A 3-stage stratified cluster sampling was implemented that resulted in a sample of 592 upper-elementary students from 29 classes in 7 schools. Self-Regulated Learning Strategies Assessment (S-RLSA), Digital Reading Literacy Assessment (DRLA), and student reports of their parents’ education backgrounds were used to collect data on the outcome and predictor variables. Interpretation of these data involved two highly regarded statistical techniques. First, structural equation modeling was used to explore relationships amongst the constructs. Second, multi-group invariance (MI) analyses were used to assess the influence of parental education and self-regulated learning strategies on students’ digital reading literacy.

Results: Enriching students’ family learning resources and strengthening their self-regulated learning abilities could have very important influences on promoting upper-elementary school students' digital reading literacy -webpage information retrieval, reading and communication abilities.

Conclusions: This study also provides information on how teachers can address student resources to improve digital reading literacy and self-regulated strategies.  相似文献   

突发事件中虚拟社区用户应急信息行为研究     

肖花  刘春年  郭韫丽 《现代情报》2016,36(11):32-36

文章基于虚拟社区环境,阐述了突发事件下用户应急信息行为表现特征,剖析基于虚拟社区的用户应急信息行为实施的必要性,划分基于虚拟社区的用户应急信息行为构成维度,分析突发事件中虚拟社区用户应急信息行为过程,并提出突发事件下基于虚拟社区的用户应急信息行为的优势所在。  相似文献   

BIM在建设工程项目中的创新价值初探     

刘慧  王孟钧  Miroslaw J. Skibniewski  郑俊巍 《科技管理研究》2016,(8):194-200

对BIM国际前沿文献进行跟踪研究,梳理BIM在建设工程项目中的主要应用模式。在分析建设工程创新特性的基础上,指出BIM为建设工程项目各参与组织构建了合作创新的工作环境。依据建设工程创新类别,分析BIM应用模式的创新定位,探索BIM在建设工程创新中的价值。  相似文献   

用户赋能和服务创新对APP绩效的影响研究     

苏婉  李阳春  王天东  郝森森 《科研管理》2020,41(8):193-201

移动应用程序APP是移动互联网时代企业创造价值的重要渠道。尽管APP市场具有巨大的商业价值，但也出现了不少绩效较低的现象：互联网创业夭折、成交转化率低下、APP卸载率较高等等。研究APP的绩效问题有助于发现影响APP绩效的关键因素，帮助企业找到提高APP绩效的新方法。本文从服务主导逻辑出发，识别出了影响APP绩效的两大关键策略--用户赋能和服务创新，论述了这两大策略对APP收入绩效的影响机理。本文使用自然观察法跟踪和分析中国（N=200）和美国（N=206）两个样本中的APP个体，发现两个样本产生出来的结果较为一致：APP若选择赋予用户更多的权力，让用户主导平台的价值创造活动，那么它的收入绩效往往比较好；企业如果较为注重服务创新，持续地为APP开发出新特征或新服务，APP的收入绩效一般较好。本研究也可以给APP企业带来实践上的启示：首先，企业应分析APP的定位和作用；其次，企业应重视用户在价值创造中的重要作用，还要意识到用户不仅仅是APP的接受者和使用者，还是生产者和价值创造者；再次，企业应按照APP的定位，再决定是否将价值创造的主导权赋予广大用户；最后，企业应当重视APP的服务创新，持续地推出新功能和新特征，为用户提供更加便捷、易用的服务。  相似文献