发表偏倚的原因、后果与预防研究

从4个方面对发表偏倚这一现象进行了研究: 1)发表偏倚的定义;2)发表偏倚产生的原因以及作者、编审者、资助者在选择性出版研究结果中所起的作用;3)发表偏倚的后果;4)发表偏倚的多项预防措施.     

循证医学和医学论文中统计学问题编辑鉴定的必要性

介绍循证医学这一新兴学说及其对21世纪临床医学的影响，指出为适应这一转变，开展医学论言语中统计学问题的编辑鉴定研究的必要性，开展此项研究可以：1）普及医学统计知识，2）提高临床与科研水平，3）提高作者撰写与阅读能力，4）提高医学期刊质量，5）丰富编辑学研究的内涵，并指出了编辑鉴审研究的初步思路。     

临床经验性论文的优化对策

比较全面地探讨医学期刊编辑对临床经验性论文的优化对策，包括消除消极的思维定势，提高编辑的知识“势能”，打好编辑的临床功底，增强编辑的选题组稿意识，编出期刊栏目的特色和转变偏颇的办刊观念等优化措施。这在实践意义上有助于医学编辑提高对临床经验性论文的认识，并采取有效措施提高论文和期刊质量，同时进一步丰富了科技写作、科技编辑方法论和编辑学研究的内容。     

The Methodological Foundations of Standardization in the Field of Library and Information Support of Science

This paper characterizes the methodological foundations of national standardization in the Russian Federation, in particular in the library and information field. The activities of Technical Standardization Committee 191 Scientific and Technical Information, Librarianship, and Publishing are reported.     

The Blockchain Technology in Scientific and Information Activities

The basic properties of the blockchain technology are discussed to allow informed decisions on its selection and use in scientific and information activities. Specific examples are given and the efficiency of this technology is analyzed.     

The Information Nature of Culture

This paper explores the information nature of culture. It is represented as an extragenetic and nonorganizational information process and system. Information is regarded as a universal property of matter that is essentially associated with development processes and realizes various forms and ways of storage and circulation at various development stages of global evolution. The socio-cultural principle of exogenous accumulation, transmission, and transformation of information is analyzed in the context of the continuing growth of the information content of material systems on the superhighway of global-universal evolution. It is noted that the information concept of culture evolves into a new area of cultural studies, that is information and cultural studies, advancing our understanding of the nature of culture and cultural genesis.     

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.     

Polarography

J Heyrovsky’s invention of polarography in which a dropping mercury electrode is used in the electrochemical cell revolutionised electroanalysis, study of electrode kinetics and adsorption studies on mercury electrodes. Polarography has also directly contributed to the development of new and innovative ideas in electrochemical techniques, instrumentation and applications