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1.
Test-taking is an emotion-laden event for many students. Typically, negative emotions are highest at the start of an examination and are replaced by positive emotions as the exam progresses. The impact of computer-based testing and immediate score reporting on students' emotions has not been examined. In Study 1, we evaluated university students’ emotions at the end of a computer-based exam and found positive emotions more strongly endorsed than negative. In Study 2, we replicated this finding and used a quasi-experimental pre-post design to examine how emotions changed in response to real examination scores. Exam scores presented immediately had significant positive effects on relief, pride, and hope and negative effects on anxiety and shame even after controlling for the corresponding emotion at the end of the exam. The one exception was anger, which was not impacted by examination score. No interaction effects were found. 相似文献
2.
[目的/意义] 以网络问答社区为研究对象,提出基于“问题-用户”传播网络的专家发现方法,为建立用户激励机制、完善专家推荐方法提供借鉴。[方法/过程] 通过分析开放问答模式的特点,以“问题”和“用户”为节点、“答题关系”为有向边,构建“问题-用户”权威值传播网络,利用答案质量改进加权的HITS算法。[结果/结论] 提出的算法可以较好地兼顾用户的答题数量与答案质量,能够选择出活跃度高、知识渊博的用户作为专家。 相似文献
3.
Rapid Feedback Assessment Methods: Can We Improve Engagement and Preparation for Exams in Large-enrollment Courses? 总被引：1，自引：0，他引：1
Sehoya H. Cotner Bruce A. Fall Susan M. Wick J. D. Walker Paul M. Baepler 《Journal of Science Education and Technology》2008,17(5):437-443
Scratch-off immediate feedback assessment technique (IF-AT) forms and classroom response systems (clickers) can increase student
engagement and interaction and help students prepare for exams by indicating the type and level of questions they will encounter.
We used the IF-AT throughout the semester in three sections of a lower-division biology class; in two, students worked on
IF-AT questions in small permanent groups, and in one, students alternated between IF-AT and clickers each week. At the end
of the semester, students answered surveys about instant feedback techniques. Students appreciated prompt feedback on their
understanding of course material, enjoyed the group interaction and opportunities to learn from each other, and continued
to have positive perceptions of instant feedback activities and to take them seriously throughout the semester. While appreciating
the versatility of clicker questions, we find that the ease of use, low cost, effectiveness, and improved classroom climate
of the IF-AT method are particularly commendable. 相似文献
4.
Steven A. Yourstone Howard S. Kraye Gerald Albaum 《Decision Sciences Journal of Innovative Education》2008,6(1):75-88
A number of studies have focused on how students and instructors feel about digital learning technologies. This research is focused on the substantive difference in learning outcomes between traditional classrooms and classrooms using clickers. A randomized block experimental design involving four sections of undergraduate Operations Management classes was used to determine if clicker systems increase student learning of both quantitative and conceptual material in Operations Management. Learning was measured using the difference between the scores on an entrance examination and the final examination. The findings of this research provide evidence that the use of immediate feedback using a technology like clickers can have a positive impact on student learning as measured by test scores. 相似文献
5.
本文系统地研究和评价了问答系统（QA）中一系列可能的布尔检索策略。我们首先给出了两个评价指标：覆盖率和答案冗余度,它们被广泛的用于评价QA系统一些标准的排序检索系统的性能。其次我们考虑QA系统中的一些布尔检索策略,也就是如何从用户问题中产生布尔查询式并把与此查询相关的回答结果集返回给用户,然后评价查询的效果。本文的目的是理解如何产生更好的QA查询策略以及那些方法能更有效的实现这种策略。 相似文献
6.
Utilizing 2068 individuals in 60 organizations in the U.S. and Italy, this study (a) examines the overall relationship between trust in top management and immediate supervisor and overall estimates of satisfaction and perceived organizational effectiveness, (b) compares the amount of variance in satisfaction and effectiveness that can be explained by trust in top management to the amount of variance explained by trust in immediate supervisor, and (c) clarifies the role of information receiving as a predictor of trust in top management and immediate supervisor. Results of a canonical correlation analysis indicated that the canonical equation explained 49% of the variance in the linear composites (Canonical R = .69, p < .001). Trust in top management was more strongly associated with satisfaction and effectiveness than was trust in immediate supervisor. Tzvo separate multiple regression analyses indicated that after controlling for geographic location of company and type of industry, information received about job and organizational issues uniquely explained 26% of the variance in trust in top management and 13% of the variance in trust in immediate supervisor. 相似文献
7.
基于改进VSM的中文问答系统研究 总被引：1，自引：0，他引：1
针对向量空间模型中的权重计算公式仅考虑词语项在文档中的相关频数,提出词语项本身的领域权重概念,改进了向量空间模型的权重计算.同时结合关键词距离和关键词顺序信息,实现了句子相似度计算,以特定课程的FAQ库检索作S@n测试对比,结果表明改进后的相似度模型提高了s@n值 相似文献
8.
"一般来说"作为篇章连接成分和话语标记,所启引、所标记的篇章直接成分,多为陈述句,主要陈述事实的通常性和事理的普遍性".一般来说"与其篇章直接成分所构成的语篇言语块,作为整体,与下文之间构成了一个语义承接连续统:换言→释词→释因→例说→归类→评说→推导→修正→反承,促进了篇章的形式衔接和语义连贯.篇章中与之有规律共现的词或短语,如"大多数、通常、不例外、却例外、如下、上述、因此、但是"等,既体现了与上下文之间的几种语义联系类型,又促进了不同层次的篇章语义和谐. 相似文献
9.
自动问答系统在搜索引擎的基础上融入了自然语言的知识与应用,与传统的依靠关键字匹配的搜索引擎相比,能够更好地满足用户的检索需求。介绍了计算机操作系统自动问答系统模型,阐述了具体开发过程,设计并实现了基于计算机操作系统领域的自动问答系统,实践表明该系统能够较为准确地回答用户问题。 相似文献
10.
Traditional Information Retrieval (IR) models assume that the index terms of queries and documents are statistically independent of each other, which is intuitively wrong. This paper proposes the incorporation of the lexical and syntactic knowledge generated by a POS-tagger and a syntactic Chunker into traditional IR similarity measures for including this dependency information between terms. Our proposal is based on theories of discourse structure by means of the segmentation of documents and queries into sentences and entities. Therefore, we measure dependencies between entities instead of between terms. Moreover, we handle discourse references for each entity. It has been evaluated on Spanish and English corpora as well as on Question Answering tasks obtaining significant increases. 相似文献