校外访问代理软件的分析与比较

校外访问是图书馆基于互联网而开展的一种新型的电子资源服务方式。校外访问能够通过代理软件来实现，其原理就是将校外访问用户的IP地址虚拟成校园网内部的私有IP地址。本文将对能够实现校外访问的三种较为典型的代理软件，即EZproxy、ISA Server（VPN）和Squid进行分析与比较，旨在对我国图书馆同行开展校外访问服务能够起到一定的抉择和指导作用。     

提高办馆效益要在"服务特色"上做文章

根据当前基层中小型图书馆服务活动中存在的问题，认为欲提高图书馆的办馆效益，必须结合实际引入投入／产出的机制、意识和手段，围绕办馆效益开拓服务项目，开展形式多样的服务，以服务求发展，在竞争中立于不败之地。     

论乡镇万册馆的巩固与发展

论文在对南京市六合区乡镇图书馆进行调查的基础上,分析了目前乡镇图书馆存在的问题,并提出解决问题的方法.     

遵循学术规范是学术期刊的重要使命-"中文社会科学期刊学术规范研讨会"综述

中国大陆人文社会科学现期期刊到底有多少种？其中具有国内正式刊号的又有多少种？各种统计数据不一。根据《中国出版年鉴》、各种期刊目录及数据库，诸如《中文核心期刊要目总览》（2004年版）、2005年邮局、内部订购目录，同方、维普、万方、CSSCI等数据统计与分析，目前大陆现期期刊9000余种，其中人文社科期刊4500余种，除去通俗等非学术性期刊，学术、准学术人文社科期刊3000余种。每种期刊平均每年出版7．3期，每期约24．3篇文章，每年约170篇。根据期刊印张数及抽样测算，每篇论文约3页。3000种期刊每年发文约51万篇。     

Not All Perceptual Gaps Were Created Equal: Explicating the Third-Person Perception (TPP) as a Cognitive Fallacy

Explicating the third-person perception (TPP) as a cognitive fallacy in the process of comparative social judgment of media effects, we propose that not all self–other perceptual gaps in media effects should be considered as TPP. When there is reasonably valid and accurate information regarding self vis-à-vis others on media consumption and vulnerability to media influence, the associated self–other gaps in media effects are not exaggerations, hence, not TPP. TPP results from cognitive biases in information retrieval and application in the process of comparative social judgments. Such biases are in the forms of self-other information differential, assimilation, contrast, and anchoring effects. Caveats in interpretation of extant evidence and implications for future TPP research are discussed.     

Retrieving and classifying instances of source code plagiarism

Automatic detection of source code plagiarism is an important research field for both the commercial software industry and within the research community. Existing methods of plagiarism detection primarily involve exhaustive pairwise document comparison, which does not scale well for large software collections. To achieve scalability, we approach the problem from an information retrieval (IR) perspective. We retrieve a ranked list of candidate documents in response to a pseudo-query representation constructed from each source code document in the collection. The challenge in source code document retrieval is that the standard bag-of-words (BoW) representation model for such documents is likely to result in many false positives being retrieved, because of the use of identical programming language specific constructs and keywords. To address this problem, we make use of an abstract syntax tree (AST) representation of the source code documents. While the IR approach is efficient, it is essentially unsupervised in nature. To further improve its effectiveness, we apply a supervised classifier (pre-trained with features extracted from sample plagiarized source code pairs) on the top ranked retrieved documents. We report experiments on the SOCO-2014 dataset comprising 12K Java source files with almost 1M lines of code. Our experiments confirm that the AST based approach produces significantly better retrieval effectiveness than a standard BoW representation, i.e., the AST based approach is able to identify a higher number of plagiarized source code documents at top ranks in response to a query source code document. The supervised classifier, trained on features extracted from sample plagiarized source code pairs, is shown to effectively filter and thus further improve the ranked list of retrieved candidate plagiarized documents.     

基于学科核心概念的科技馆教育活动案例分析——以合肥科技馆“锥体上滚”案例为例

随着知识碎片化问题的日益突出,科学教育领域逐渐关注学科体系中的核心概念对学生认知发展中的重要作用。科技馆作为青少年课外学习的重要场所,为了提升其活动质量、推动馆校结合的发展,也应尝试基于学科核心概念的教学。本文从科技馆教育的视角,以合肥科技馆“锥体上滚”活动为例,解读活动流,剖析活动的设计理念、教学策略以及活动资源,探讨科技馆教育活动融合学科核心概念的合理途径。     

对环境工程专业水处理方向本科毕业设计的几点思考

本文从目前水处理方向毕业设计存在的问题入手,提出了关于该专业水处理方向本科毕业设计中应该注意的几点问题及应该提高和加强的地方.