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文献计量学与研究 何玉山教授 Prof. Yuh-Shan Ho 北京大学环境科学系 2006 年 08 月 25 日.

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Presentation on theme: "文献计量学与研究 何玉山教授 Prof. Yuh-Shan Ho 北京大学环境科学系 2006 年 08 月 25 日."— Presentation transcript:

1 文献计量学与研究 何玉山教授 Prof. Yuh-Shan Ho 北京大学环境科学系 2006 年 08 月 25 日

2 Bibliometric  Pritchard, J. (1969), Statistical bibliography or bibliometrics? Journal of Documentation, 25 (4),  Fairthor, R.A. (1969), Progress in documentation - Empirical hyperbolic distributions (Bradford- Zipf-Mandelbrot) for bibliometric description and prediction. Journal of Documentation, 25 (4), London, England

3 Bibliometric  应用数学与统计方法至书或其它形式的 文字传播。是一种测量的技术。 (Pritchard, 1969)  以量化方式处理记录论述的属性及其相 关行为。 (Fairthor, 1969)

4 Bibliometric  以数量分析与统计方法对文献做分布与 特性的探讨。

5 Bibliometric  图书管理与信息科学

6 Bibliometric Laws  Lotka’s Law  Bradford’s Law  Zipf’s Law

7 Lotka’s Law  Lotka, Alfred James ( ), USA  The number of authors making n contributions is about 1/n a of those making one contribution, where a is often nearly 2.  Lotka, A.J. (1926), The frequency distribution of scientific productivity. Journal of the Washington Academy of Science, 16 (12),

8 Bradford’s Law  Samuel Clements Bradford ( )  Journals in a field can be divided into three parts, each with about one-third of all articles: 1) a core of a few journals, 2) a second zone, with more journals, and 3) a third zone, with the bulk of journals. The number of journals is 1:n:n 2.  Bradford, S.C. (1934), Sources of information on specific subjects. British Journal of Engineering, 137 (3550),

9 Zipf’s Law  George Kingsley Zipf ( )  The probability of occurrence of words or other items starts high and tapers off. Thus, a few occur very often while many others occur rarely.  P n  1/n a, where P n is the frequency of occurrence of the nth ranked item and a is close to 1.

10 Zipf’s Law rf = C where r is the rank of a word; f is the frequency of occurrence of the word; C is a constant that depends on the text being analyzed.

11 Zipf’s Law  Zipf, G.K. (1945), Some psychological determinants of the structure of publications. American Journal of Psychology, 58 (4),

12 研究之门  开题  发表  突破

13 两把钥匙  建立个人研究数据库  个人研究领域文献计量分析

14 建立个人研究数据库( 1 )  建立研究基石  延申个人记忆

15 建构个人数据库三原则 1. 以期刊归类搜寻目录 2. 以作者归档 3. 以年份储存全文数据

16 文献计量分析  文章类型  语言  文章页数  成长趋势  作者分析  合作   影响因子   研究领域   作者关键词   参考文献数   文献计量模式分析   被引用率

17 研究与文献计量学 学术研究是传承的,做任何主题的研究都 将与其它相关研究互动。

18 目的  研究主题在该领域发展过程中的定位。  历史上演进的定位,与其它国家的关系。  研究领域整体发展。

19 目的  开题后清楚走入研究领域,找出可能的 突破点。

20 三种必读文献  最早的文献  影响力最大的文献  最新的创意文献

21 进入 SCI 世界 Institute for Scientific Information (ISI)

22 Prof. Eugene Garfield

23 President/Editor-in-Chief The Scientist Founder & Chairman Emeritus Institute for Scientific Information

24 Prof. Eugene Garfield  Columbia University, B.S., Chemistry, 1949  Columbia University, M.S., Library Science, 1954  University of Pennsylvania, Ph.D., Structural Linguistics, 1961

25 Prof. Eugene Garfield 1955the idea of an impact factor 1958Starts Institute for Scientific Information (ISI) 1960sCreated the journal impact factor with Irving H. Sher

26 Institute for Scientific Information (ISI)   Web of Science   Current Contents Connect   ISI Proceddings   Derwent Innovations Index   Dwewent Web of Namotechnology   Biological Abstracts   BIOSIS Previews   CAB Abstracts   Food Science and Technology Abstracts   Inspec   MEDLINE   PsycINFO   Zoological Record

27 Institute for Scientific Information (ISI) Analytical Tools   Journal Citation Reports   Essential Science Indicators Other Resources   ISI HighlyCited.com  

28 Web of Science (WOS) Institute for Scientific Information (ISI) 于 1997 年间建置之因特网版引用文献索引数 据库系统

29 Web of Science (WOS)  Citation Databases  Chemistry Databases

30 Citation Databases  Science Citation Index Expanded (SCI- EXPANDED): 1900-present Subject Category: 171 Journal: 6088 Year: 2005

31 Citation Databases  Social Sciences Citation Index (SSCI): 1956-present Subject Category: 53 Journal: 1747 Year: 2005

32 Citation Databases  The Arts a Humanities Citation Index 1975-present

33 主要资料来源 1.Institute for Scientific Information (ISI) 2.Web of Science (WOS) 3.Citation Databases 4.Science Citation Index Expanded (SCI- EXPANDED)

34 JCR 评估过程  ISI 每年审查的期刊约有 2,000 种  10% 到 20% 的期刊会被收录  已被收录的期刊也被追踪考核,以确定 其仍然维持高质量水平。  ISI 评估小组具有其所负责领域的相关教 育背景,及信息科学方面的经验素养, 必要时 ISI 的顾问团也参与评估。

35 JCR 评估考虑因素  期刊的基本出版标准( Basic Journal Standards )  编辑内容( Editorial Content )  国际性( Internationality )  引用文献分析( Citation Analysis )

36 JCR- 期刊评鉴工具  哪些期刊最具影响力?  哪些期刊最常被使用?  哪些期刊最热门?  哪些期刊出版量最大?  哪些期刊最常被引用?

37 JCR- 期刊评鉴工具  期刊影响系数( Impact Factor )高或低?  哪些期刊的立即引用率( Immediacy Index )最高?  期刊引用及被引用的情形?  收录期刊之详细出版讯息。  收录期刊之刊名改变情形。

38 Journal Citation Reports Impact factor: a ratio between citations and citable items published (Garfield, 1972)

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40 Impact Factor CA-A Cancer Journal for Clinicians

41 Impact Factor New England Journal of Medicine

42 Impact Factor Science

43 Last data updates 20/08/2006 IF: Impact Factor; II: Immediacy Index; No.: Number of articles in 2005

44 Last data updates 20/08/2006 Environmental Engineering; Environmental Sciences; Water Resources

45 Last data updates 20/08/2006

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48 Lander, ES et al. and International Human Genome Sequencing Consortium (2001), Initial sequencing and analysis of the human genome. Nature, 409 (6822), Author: 243 Institute: 54 Chinese Acad Sci, Inst Genet, Ctr Human Genome, Beijing Genom Inst, Beijing, Peoples R China So China Natl Human Genome Res Ctr, Shanghai, Peoples R China No China Natl Human Genome Res Ctr, Beijing, Peoples R China

49 Last data updates 20/08/2006 Environmental Engineering; Environmental Sciences; Water Resources

50 Last data updates 20/08/2006 Environmental Engineering; Environmental Sciences; Water Resources

51 Last data updates 20/08/2006 Environmental Engineering; Environmental Sciences; Water Resources

52 Howarth, R.W., Billen, G., Swaney, D., Townsend, A., Jaworski, N., Lajtha, K., Downing, J.A., Elmgren, R., Caraco, N., Jordan, T., Berendse, F., Freney, J., Kudeyarov, V., Murdoch, P. and Zhu, Z.L. (1996), Regional nitrogen budgets and riverine N&P fluxes for the drainages to the North Atlantic Ocean: Natural and human influences. Biogeochemistry, 35 (1), Has been cited 134 times 30/07/06

53 Howarth RW (reprint author), Cornell Univ, Ithaca, NY USA Free Univ Brussels, Grp Microbiol Milieux Aquat, Brussels, B Belgium US EPA, Environm Res Lab, Narragansett, RI USA Oregon State Univ, Dept Bot & Plant Pathol, Corvallis, OR USA Iowa State Univ, Ames, IA USA Univ Stockholm, Dept Syst Ecol, Stockholm, S Sweden Univ Stockholm, Ctr Marine Res, Stockholm, S Sweden Inst Ecosyst Studies, Millbrook, Ny USA Smithsonian Environm Res Ctr, Edgewater, MD USA Dlo, Cabo, Wageningen, Nl-6700 AA Netherlands Csiro, Div Plant Ind, Canberra, Act 2601 Australia Inst Soil Sci & Photosynth, Pushchino, Russia US Geol Survey, Div Water Resources, Albany, NY USA Inst Soil Sci, Lab Mat Cycling Pedosphere, Nanjing, Peoples R China

54 Impact Factor 的迷失

55 Environmental Science & Technology Subject Categories:  Engineering, Environmental: Impact Factor 4.054, 1/37 (2005)  Environmental Sciences: 5/140 (2005)

56 Environmental Science & Technology From 1969, Vol 3 (1) to 2006, 40 (13), documents Time cited > 5008 (0.43%) documents Time cited  (2.8%) documents Time cited = (29%) documents Time cited = (7.1%) documents Time cited = 2857 (4.6%) documents

57 Environmental Science & Technology 284 papers Kile, D.E., Chiou, C.T., Zhou, H.D., Li, H. and Xu, O.Y. (1995), Partition of nonpolar organic pollutants from water to soil and sediment organic matters. Environmental Science & Technology, 29 (5), Has been cited 104 times 02/08/06

58 Environmental Science & Technology US Geol Survey, Denver Fed Ctr, Denver, CO USA Minist Water Resources, Water Qual Res Ctr, Beijing, Peoples R China Nanjing Univ, Dept Environm Sci & Engn, Nanjing, Peoples R China

59 The most frequently cited paper Hamilton, M.A., Russo, R.C. and Thurston, R.V. (1977), Trimmed spearman-karber method for estimating median lethal concentrations in toxicity bioassays. Environmental Science & Technology, 11 (7), Environmental Engineering: Impact Factor 4.054, 1/37 (2005) Environmental Sciences: 5/140 (2005) Montana State University Has been cited 768 times 30/07/06

60 The most frequently cited paper Ho, Y.S. and McKay, G. (1999), Pseudo- second order model for sorption processes. Process Biochemistry, 34 (5), Biochemistry & Molecular Biology: Impact Factor 1.796, 174/261 (2005) Biotechnology & Applied Microbiology: 61/139 (2005) Chemical Engineering: 13/116 (2005) Has been cited 213 times 02/08/06

61 The most frequently cited paper Ho, Y.S. and McKay, G. (1998), Sorption of dye from aqueous solution by peat. Chemical Engineering Journal, 70 (2), Engineering, Chemical: Impact Factor: 2.034, 11/116 (2005) Has been cited 133 times 02/08/06

62 The most frequently cited paper Ho, Y.S., Wase, D.A.J. and Forster, C.F. (1996), Kinetic studies of competitive heavy metal adsorption by sphagnum moss peat. Environmental Technology, 17 (1), Environmental Sciences: Impact Factor 0.718, 109/140 (2005) Has been cited 104 times 02/08/06

63 The most frequently cited paper Ho, Y.S., Wase, D.A.J. and Forster, C.F. (1994), The adsorption of divalent copper ions from aqueous solution by sphagnum moss peat. Process Safety and Environmental Protection, 72 (B3), Engineering, Environmental: Impact Factor 0.500, 29/37 (2005) Engineering, Chemical: Impact Factor 0.500, 72/116 (2005) Has been cited 45 times 02/08/06

64 The most frequently cited paper Ho, Y.S. and McKay, G. (1998), Kinetic models for the sorption of dye from aqueous solution by wood. Process Safety and Environmental Protection, 76 (B2), Engineering, Environmental: Impact Factor 0.500, 29/37 (2005) Engineering, Chemical: 72/116 (2005) Has been cited 75 times 02/08/06

65 The most frequently cited paper Ho, Y.S. and McKay, G. (1998), A comparison of chemisorption kinetic models applied to pollutant removal on various sorbents. Process Safety and Environmental Protection, 76 (B4), Engineering, Environmental: Impact Factor 0.500, 29/37 (2005) Engineering, Chemical: 72/116 (2005) Has been cited 83 times 02/08/06

66 The most frequently cited paper Ho, Y.S. and Chiang, C.C. (2001), Sorption studies of acid dye by mixed sorbents. Adsorption-Journal of the International Adsorption Society, 7 (2), Chemistry, Physical: Impact Factor 1.323, 70/111 (2005) Engineering, Chemical: 30/116 (2005) Has been cited 72 times 02/08/06

67 The most frequently cited paper Ho, Y.S. and McKay, G. (1999), Comparative sorption kinetic studies of dye and aromatic compounds onto fly ash. Journal of Environmental Science and Health Part A-Toxic/Hazardous Substances & Environmental Engineering, 34 (5), Engineering, Environmental: Impact Factor /37 (2005) Environmental Sciences: 104/140 (2005) Has been cited 48 times 02/08/06

68 The most frequently cited paper Ho, Y.S. and McKay, G. (2000), The kinetics of sorption of divalent metal ions onto sphagnum moss peat. Water Research, 34 (3), Engineering, Environmental: Impact Factor 3.019, 3/37 (2005) Environmental Sciences: 8/140 (2005) Water Resources: 1/57 (2005) Has been cited 186 times 02/08/06 Rank 1st in citation from 515 papers of Water Research (2000); Rank 3rd in citation from 4,815 papers of Water Research (from year 1997, Volume 31 (1) to year 2006, Volume 40 (12))

69 The most frequently cited paper Lowry, O.H., Rosebrough, N.J., Farr, A.L. and Randall, R.J. (1951), Protein measurement with the folin phenol reagent. Journal of Biological Chemistry, 193 (1), Biochemistry & Molecular Biology: Impact Factor 5.854, 38/261 (2005) Washington University Has been cited more than 100,000 times since /07/06

70 Journal of Biological Chemistry  Biochemistry & Molecular Biology: Impact Factor 5.854, 38/261 (2005)  Publisher: Amer Soc Biochemistry Molecular Biology Inc  Issues/Year: 52  Journal Country/Territory: United States  Language: English

71 Journal of Biological Chemistry Fiske, C.H. and Subbarow, Y. (1925), The colorimetric determination of phosphorus. Journal of Biological Chemistry, 66 (2), Harvard Medical School Has been cited 21,385, 30/07/06

72 Journal of Biological Chemistry Folch, J., Lees, M. and Stanley, G.H.S. (1957), A simple method for the isolation and purification of total lipides from animal tissues. Journal of Biological Chemistry, 226 (1), Harvard Medical School Has been cited 35,293, 30/07/06

73 Journal of Biological Chemistry Omura, T. and Sato, R. (1964), Carbon monoxide-binding pigment of liver microsomes. I. evidence for its hemoprotein nature. Journal of Biological Chemistry, 239 (7), Osaka University Has been cited 10,805, 30/07/06

74 Journal of Biological Chemistry Weber, K. and Osborn, M. (1969), Reliability of molecular weight determinations by dodecyl sulfate-polyacrylamide gel electrophoresis. Journal of Biological Chemistry, 244 (16), Harvard University Has been cited 23,289, 30/07/06

75 Journal of Biological Chemistry O’Farrell, P.H. (1975), High-resolution 2- dimensional electrophoresis of proteins. Journal of Biological Chemistry, 250 (10), University of Colorado Has been cited 16,918, 30/07/06

76 Journal of Biological Chemistry Grynkiewicz, G., Poenie, M. and Tsien, R.Y. (1985), A new generation of Ca2+ indicators with greatly improved fluorescence properties. Journal of Biological Chemistry, 260 (6), University of California Has been cited 16,249, 30/07/06

77 个人研究领域文献计量分析 Horizontal Gene Transfer Horizontal Gene Transfer

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87 191 journals

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92 个人研究领域文献计量分析 Water Research Water Research

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104 个人研究领域文献计量分析 环境工程、环境科学、水资源领域 SCI 期刊 发表的与吸附相关的研究论文

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109 北京大学文献计量分析 SCI SCI

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114 Years since Cumulative number of articles Exponential model Exponential model 02/2010

115 Seven Major Industrial Countries (G7) - USA

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120 研究的养成  熏陶

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122 感谢 何玉山博士 Yuh-Shan Ho, Ph.D.


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