基于元搜索的聚类挖掘引擎

针对目前搜索引擎返回结果的海量性和无结构性，构建一个基于元搜索的聚类挖掘引擎，旨在利用元搜索引擎返回的结果，提高搜索结果聚类效率，快速有效地为用户提供一个搜索结果结构视图，从而进行进一步的知识发现。介绍了搜索引擎和挖掘引擎的主要功能及差别，应用向量空间模型对元搜索结果进行处理。介绍当前主要的聚类算法-K—means划分法和层次凝聚聚类法，并在此基础上提出基于元搜索结果将两种聚类算法相结合的聚类方法。     

Using feedback to promote student participation in online learning programs: evidence from a quasi-experimental study

Educational technology research and development - How should learner analytics and different media be used to optimize feedback to increase students’ motivation and sense of learning...     

Pedagogy of the Spirit: Comparing Evangelical and Latter-day Saint Youth Self-Reported In-Class Spiritual Experiences

This study statistically analyzes data from 756 evangelical and Latter-day Saint youth regarding their perceived in-class spiritual experiences of twenty items related to Christian theology. The data indicates similar spiritual outcomes between the two groups, with no statistically significant differences between eleven of the twenty spiritual experience items. However, evangelical participants most highly reported affective spiritual outcomes and least commonly reported action-oriented spiritual outcomes, while Latter-day Saint youth most highly reported action-oriented spiritual outcomes and least commonly reported cognitive spiritual outcomes. Action-oriented spiritual outcomes constitute the greatest difference between the two groups. We explore how the differences between evangelical and Latter-day Saint pedagogy and theology might account for these differences.     

Effectiveness of an Intensive Learning Skills Course for University Students on Restricted Enrolment

Prior to the commencement of the 1994 academic year, University of Auckland students who had failed one‐half or more of their papers in the previous year were invited to attend a four‐day intensive learning skills course conducted by the Student Learning Centre of the University. The course covered various topics such as effective time management and study organisation, preparing for and taking tests and exams, memory and concentration, and writing skills. A total of 74 students attended the course. After final examinations, the results of these students were analysed. As a group these students significantly improved on their previous year's pass rates. Furthermore, their pass rates were significantly better than those of a randomly selected group of students who were in a similar situation with regard to their previous year's academic performance, but who did not attend the course.     

H2TBP和H2TP(o-NO2)TBP的Sn(Ⅳ)、Mn(Ⅲ)配合物电化学性质

研究了H2TBP，H2TP（o-NO2)TBP的Sn(Ⅳ）和Mn(Ⅲ)配合物的电化学性质，并用Nicholson方法测这了上述配合物的非均相电子传递速率常数。     

Moving from a Personal to a Social Constructivist View of Learning: Implications for Support in the Student Teaching Experience 1

Recently, the school and co‐operating teachers have an increasingly important role, by offering stronger support during the teaching practice. Being congruent with similar developments in teacher education programmes in other countries, this development in Hong Kong is strengthened by research studies examining the process of learning to teach. By arguing that the process of learning to teach can be examined from a personal constructivist view of learning, this paper examines the experience from the student‐teachers’ perspective. The finding reports on the problems perceived by the student‐teachers during the student teaching practice and the support provided by the co‐operating teachers. The problems encountered and the support obtained were compared and contrasted to reveal the possible roles of the co‐operating teachers. The process of learning to teach is extended from a personal view to include support from the social milieu. This paper proposes to consider the process from a social constructivist view of learning. Drawing on the findings, it concludes with implications on how the school and the teacher education institute can collaborate and support the student‐teachers from a social constructivist view of learning.

     

‘Just turn to us’: the persuasive features of contract cheating websites

Academic integrity is important to universities and students must abide by codes of academic conduct around assessment. Students are, however, subject to multiple pressures around assessment, some of which can push them to cheat. Modern contract cheating websites are the fronts for sophisticated, commercial operations that offer individually written assessment items for a fee; to combat their use we need a better understanding of the tools they use to persuade students to become customers. In this study we examined the persuasive features of 11 highly-visible contract cheating websites and mapped these features to a previously used persuasiveness framework. We find that contract-cheating websites use a variety of credibility, interactive and informative features designed to persuade students to use their services. In addition, the sites offer low-cost, customisable products available in very short timeframes. We suggest ways in which educators can encourage academic integrity by talking with their students about how the websites promulgate their ‘just turn to us’ message.     

Preservice teachers’ self‐efficacy in managing students with symptoms of attention deficit/hyperactivity disorder: The roles of diagnostic label and students’ gender

The present study investigated preservice teachers’ self‐efficacy in classroom management involving students with symptoms of Attention Deficit/Hyperactivity Disorder (ADHD). A total of 137 Chinese preservice teachers were randomly presented with one of four vignettes involving a student character with ADHD symptoms, with manipulations including the character’s gender and diagnostic label of ADHD. Upon reading the vignette, participants responded to questions concerning their self‐efficacy in inclusive classroom management involving the character. Findings based on analysis of covariance indicated an interaction effect of the vignette character’s gender and label on teachers’ self‐efficacy. Specifically, teachers perceived greater self‐efficacy in a classroom involving a girl with an ADHD label than in a classroom involving a girl with no label or a boy with a label. Findings enriched the literature concerning the roles of gender and label in preservice teachers’ self‐efficacy toward inclusive classroom management.