形成性考核操作模式的探索

由于远程教育主体与客体时空上的分离，对学生的个体化学习予以有效的引导、帮助和监控，显得尤为重要。探索一种科学合理的形成性考核操作模式，在该模式下，教师利用精心设计的导学资料和作业，借助多态反馈渠道对学生个别化学习予以有效的引导和监控，使学生通过自学、小组内互助学习、组间互助学习、向教师求助、网上求助等方式完成作业，系统地掌握知识继而形成能力，以充分地体现远距高教学的特点和优势。     

Assessing a Patron-Driven,Library-Funded Data Purchase Program

The University Library at the University of Illinois at Urbana-Champaign established the Data Purchase Program in 2010 to provide a source of funding for the purchase of datasets which are requested by students and faculty, and make this data available to the campus at large for future use. In this study, the authors interviewed past applicants who submitted proposals to this program to collect their feedback and perspectives on the strengths of this program and the impact that it had on their research, as well as to determine any aspects of the program's design or implementation that need improvements. Interviews revealed that the ease of application and lack of other options for obtaining data made the program appealing, especially to graduate students, but that study participants wished for a more robust program in terms of marketing the specific data purchased by the library and help with data in general. Also, the purchased data had a wide range of impacts on the participants' research.     

The permanence and global attractivity of a competitive system with feedback controls and toxic substance

In this paper, we consider a nonautonomous competitive system with feedback controls and toxic substance. Some average couditions for the permanence and global attractivity of the system are obtained. It is shown that our results are generalization or improvement of those of Zhao, Jiang and Lazer E Nonlinear Analysis ： Real World Applications, 5 （ 4 ） （ 2004 ）, 265 - 276 1, Xia, Cao, Zhang and Chen Journal of Mathematical Analysis and Applications ,294 （ 2 ） （ 2004 ）, 503 - 5221 and Chen [ Nonlinear Analysis ： Real World Applications, in press ].     

试论体育教学中的反馈

本文根据信息反馈的基本原理和体育教学的特点,将体育课中常见的反馈进行归纳和分析,提出了反馈在体育教学中的作用.     

构建动作技能学习的反馈时机模式

通过对体育专业体育系学生田径运动技术教学课进行长达两年的对比教学实验研究发现:在技术动作初学阶段,即刻反馈的反馈效能优于延迟反馈;在技术动作熟练阶段,适当的延迟反馈其反馈效能优于即刻反馈;在技术动作初学阶段,教师提供即刻反馈,技术动作熟练后,提供适当的延迟反馈,这种反馈时机模式的反馈效能优于单纯的即刻反馈或延迟反馈.     

专业合作经济组织与农民增收的调查与思考——以福建泰宁县下坊农家度假山庄为例

随着经济体制改革的深入和农业产业结构的调整,农民专业合作经济组织得到了发展,为广大农民带来了一定的增产增收。但是,由于没有明确的法律地位和政策扶持,阻碍了这类组织的进一步发展与壮大。福建省泰宁县下坊农家度假山庄合作经营是农民专业合作经济组织发展的一个例证。笔者以此为例,深入下坊农家度假山庄,对下坊农家度假山庄的形成过程和合作经营状况进行调查,分析了专业合作经济组织与农民增收之间的关系,并对农民专业合作经济组织的发展问题进行思考。     

"自助安置"与农民工子女简易学校的扶持

对低收入人群梯度安置的自助安置理论,对于今天在中国城市化进程中,解决无规划激增的农民工子女的义务教育安置问题同样适用,实践对象就是对农民工子女简易学校的改造和扶持.     

区间离散广义系统的鲁棒镇定

研究了区间离散广义系统的状态反馈鲁棒镇定问题.首先,用区间矩阵的一种等价描述形式,将所讨论的区间离散广义系统变换成对应的矩阵范数有界的参数不确定性离散广义系统.其次,在此基础上,基于矩阵不等式,得到了区间离散广义系统可由状态反馈鲁棒镇定的一个充分条件,并利用矩阵不等式的解给出了控制器的设计方法.     

生物医学文献检索方法与问答系统

如何有效的进行生物医学文献检索和信息挖掘,是计算机技术和生物信息技术研究领域中的一个经典课题。本文对生物医学文献中自然语言问题文档,片段,概念和RDF三元组,构建了高效的检索和问答系统。特别的,在文档检索中,我们搭建了基于顺序依赖模型,词向量,和伪相关反馈相结合的通用检索模型;同时,前k个文档被分离为句子和片段,并以此建立检索索引,并基于文档检索模型,完成片段检索;在概念挖掘中,提取生物医学的概念,列出相关的概念属于网络服务的五个数据库链接,通过得分排名得到最终的概念。在CLEF BioASQ几年的评测数据上,我们构造的检索系统都取得了不错的性能。     

Rhetorical meta-language to promote the development of students’ writing skills and subject matter understanding

Background: Feedback is one of the most significant factors for students’ development of writing skills. For feedback to be successful, however, students and teachers need a common language – a meta-language – for discussing texts. Not least because in science education such a meta-language might contribute to improve writing training and feedback-giving.

Purpose: The aim of this study was to explore students’ perception of teachers’ feedback given on their texts in two genres, and to suggest how writing training and feedback-giving could become more efficient.

Sample: In this study were included 44 degree project students in biology and molecular biology, and 21 supervising teachers at a Swedish university.

Design and methods: The study concerned students’ writing about their degree projects in two genres: scientific writing and popular science writing. The data consisted of documented teacher feedback on the students’ popular science texts. It also included students’ and teachers’ answers to questionnaires about writing and feedback. All data were collected during the spring of 2012. Teachers’ feedback, actual and recalled – by students and teachers, respectively – was analysed and compared using the so-called Canons of rhetoric.

Results: While the teachers recalled the given feedback as mainly positive, most students recalled only negative feedback. According to the teachers, suggested improvements concerned firstly the content, and secondly the structure of the text. In contrast, the students mentioned language style first, followed by content.

Conclusions: The disagreement between students and teachers regarding how and what feedback was given on the students texts confirm the need of improved strategies for writing training and feedback-giving in science education. We suggest that the rhetorical meta-language might play a crucial role in overcoming the difficulties observed in this study. We also discuss how training of writing skills may contribute to students’ understanding of their subject matter.