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1.
《科学学研究》2001-2003年载文、作者和引文的统计分析 总被引：19，自引：0，他引：19
应用文献计量学的方法,对2001-2003年共16期《科学学研究》作了定量分析,并与相关文献进行比较。结果表明:该刊载文量适中,基金项目论文占37.50%;平均出版时滞165天,共有31篇载文的出版时滞仅为3个月;论文合著率60.51%,合作度1.85,该刊稿源丰广,又拥有一批核心作者和核心作者群;第一作者中具有高级职称的占58.97%,博士和博士研究生占42.17%,年龄31～40岁的占43.80%;篇均引文9.07条,引文种类多样,质量上乘。 相似文献
2.
对《中华核医学与分子影像杂志》1997～2011年刊载的论文进行分析,了解其载文特点和规律.采用文献计量学评价方法,对载文量、省部级以上基金论文比、载文来源(地区)、作者合著率和合作度、引文情况以及普赖斯指数等进行统计和分析.结果显示:15年载文2460篇,期均载文数28.9篇,省部级以上基金论文比2011年达34.4％,15年平均25.1％;论文发表最多的地区为北京,作者合著率94.9％,平均合作度5.3,131位核心作者发表的论文数占总论文数的31.0％;引文以英文文献最多,类型多为期刊,2011年普赖斯指数为53.8％,15年平均为52.1％. 相似文献
3.
92期《中国科学》若干载文特征分析 总被引：5，自引：2，他引：3
查阅的2000年以来92期《中国科学》共载文1254篇,期均载文13.63篇。A、B、C、D、G辑中,A辑(数学)的期载文量最低。1254篇载文中,基金资助的论文比例高达91.64%,且资助力度大,国家级基金资助和多项基金资助的论文均占绝大多数。B、C、D、G辑的图表数量较多,数据量大。引文普遍较多(单篇论文最多引文达118条),英文引文占绝大多数。合作的论文占95%以上,作者最多的达55人。第一作者中高校的约占50%,中国科学院系统的约占45%,其他单位的仅占约5%。出版时滞最长的为25个月,最短的1个 相似文献
4.
《科技通报》创刊已１０周年，共发表科技论文９７３篇。统计分析了各学科论文数，工科论文数居首，有２６２篇，占２７％；农科、医科论文数各为１９１篇和１９９篇，各占２０％。浙江大学、杭州大学、浙江农业大学和浙江医科大学是论文的主要产出单位，这四所高校的论文数占发表论文总数的４５％。此外还分析了１９９１～１９９４年论文第一作者的年龄、职称结构情况以及自然科学基金资助项目的课题论文数，说明《科技通报》具有一定的学术水平。 相似文献
5.
吴琼 《中国科技期刊研究》2010,21(3):291-295
运用文献计量学方法，对《中国地震》1997-2008年载文的第一作者信息、论文信息，及2001-2007年期刊评价指标进行统计分析。结果显示，30～49岁年龄段作者是发表论文的主要力量，约占发文总数的59.36%；博士或硕士研究生学历的作者比例逐年增加，2008年达到97.14%；高级职称作者占82.64%；作者服务机构以地震系统为主，约占92%；项目资助论文的比例近80%；研究地震学基本问题的论文是《中国地震》主要载文；平均91.07%的他引率及7.2～8.7年的被引半衰期，表明刊物具有较高的受关注度及较持久的影响力，反映了《中国地震》良好的发展状况。 相似文献
6.
为了进一步了解和掌握《中国科技期刊研究》近年的载文现状，本文以该刊2003~2005年出版发行的18期现刊为统计对象，从文献计量学角度，对其载文量、栏目设置、基金论文、发表时滞、多产作者、作者合著率与合作度、作者机构及作者地域分布、引文量、引文类型、作者自引率与期刊自引率以及普赖斯指数等指标进行了统计分析。结果显示：载文量2005年比2004年和2003年分别增长了14.1%和13.3%；作者平均合著率达到47.9%，平均合作度达到1.89；来自期刊编辑部的第一作者占统计论文第一作者总人数的79.0%；引文量2005年比2004年和2003年分别增长了37.5%和23.7%，其中电子文献类引文2005年比2004年和2003年分别增长了1.41倍和3.96倍，呈明显增长态势； 平均项目论文比为12.2%；平均普赖斯指数达到75.07%。 相似文献
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8.
对《中国科技期刊研究》创刊至2012年第1期共120期的作者信息进行了统计分析,结果显示：该刊创刊以来共发文4 764篇,载文的作者共9 187人次,载文量和作者数量均呈现逐步增长的态势,尤其是作者队伍发展极为迅速;合著率从1990年的12.9%逐年上升至2012年第1期的72.3%,显示所发表论文的研究深度逐年加大,合作是未来高质量科研和高水平论文产出的趋势。该刊拥有一大批编辑学的核心作者,且这些核心作者也指导和培养了许多青年编辑成为该刊的潜在高产作者,为其可持续发展创造了良好的条件。 相似文献
9.
从科学计量学角度看近十年中国科技合作态势 总被引：2，自引：0，他引：2
基于WoS和CSTPCD数据库,分析了2003-2012年间中国科研人员作为第一作者参与的区域和国际科技合著论文,从而研究了近十年来中国科技合作的态势。利用科学计量学方法从中国科技合作论文的学科、地区、机构类型、合作伙伴等方面对我国近十年来科技合作的整体趋势、合作规模、合作类型等态势进行了研究。研究表明：中国的合著论文数量及其在全部论文中所占的比例逐步趋于稳定,合著论文的比例大体将稳定在近90%的水平。在合著论文数量快速增长的同时,论文篇均作者稳步呈增长态势,更加广泛和深入的合作仍然是科学研究方式的发展方向。各种合著类型的论文所占比例变化不大,同一机构内部人员合著的论文产出仍然占据主导地位,同省不同机构合著论文的比例保持在近20%的水平;省际合著论文所占比例保持在14%左右。美国、日本、英国一直是我国科技合作的重要战略合作伙伴,其地位在近十年来的科技论文合著中基本保持稳定。随着与大陆交流的不断密切,香港也成为了科技合作的主要对象。 相似文献
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综述了《科技导报》的发展历程以及该刊的内容、特色。以发表在《科技导报》10年间（2003-2012）有关科学技术的传播和普及（科普）类文章为研究对象,总结近十年来科普类文章发表现状;从研究对象的整体及局部,统计分析了科普类文章下载次数及被引频次的分布、学科分布、作者群分布、研究领域分布以及部分被引论文的引证文章分布情况,研究科普类文章的分布规律及其原因和存在的一些问题。探索综合类科技期刊《科技导报》科普类载文特色及对科普发挥的作用及影响,以期对科普事业及科技期刊的发展有所启发。 相似文献
11.
A research group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol-a chemical found in the skins of red grapes in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said. 相似文献
12.
Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
13.
A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
14.
Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
15.
Active biological molecules functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery disease diagnosis therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction. 相似文献
16.
《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
17.
Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
18.
《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
19.
Leah A. Lievrouw 《The Information Society》2000,16(2):155-159
This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment. 相似文献
20.
Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献