本文对国际科学计量学杂志《Ｓｃｉｅｎｔｏｍｅｔｒｉｃｓ》１９７９－１９９１年的研究论文内容、栏目、作者及国别和编委及国别作了计量分析，揭示出科学计量学研究的重点、活动的中心及发展趋势，说明了学科带头人在发展科学计量学这门新兴学科中的作用。

国际刊物《Scientometrics》文献计量研究

No wonder you activities are, reading will be always needed. It is not only to fulfil the duties that you need to finish in deadline time. Reading will encourage your mind and thoughts. Of course, reading will greatly develop your experiences about everything. Reading invisible colleges diffusion of knowledge in scientific communities is also a way as one of the collective books that gives many advantages. The advantages are not only for you, but for the other peoples with those meaningful benefits.

Invisible colleges : diffusion of knowledge in scientific communities

Resumen en: The aim of this study was a survey of the estimated costs of soil erosion, an issue of fundamental importance in view of the current worldwide discussion...

http://www.redalyc.org/pdf/1802/Resumenes/Abstract_180218547001_2.pdf

Revista Brasileira de Ciência do Solo

Sustainability of water use in agriculture is a line of research that has gained in importance worldwide. The present study reviewed 25 years of international research on sustainable water use in agriculture. A bibliometric analysis was developed to sample 2084 articles. Results indicate exponential growth in the number of articles published per year, with research in this field having acquired a global scale. Environmental Science and Agricultural and Biological Sciences are the main categories. Three journals—Agricultural Water Management, Water Resources Management and Nongye Gongcheng Xuebao Agricultural Engineering—published the most of the articles. China, the U.S., Australia, India and Germany produced the most research. The three institutions that published the most articles were all Chinese (Chinese Academy of Sciences, China Agricultural University and Northwest A&F University). The most cited authors were Ridoutt, Hoekstra and Zhang. The keywords most frequently used include: water-use, irrigation, water-management, water-supply, and sustainability. A network map shows three clusters that focus on the environmental, agronomic and management aspects. The findings of this study can assist researchers in this field by providing an overview of research on the sustainability of hydric resources.

Sustainable Water Use in Agriculture: A Review of Worldwide Research

The Brazilian Lattes Platform is an important academic/ resume data set that registers all academic activities of researchers associated with different major knowledge areas. The academic information collected in this data set is used to evaluate, analyze, and document the scientific production of research groups. Information about the interactions between Brazilian researchers in the form of coauthorships, however, has not been analyzed. In this article, we identified and characterized Brazilian academic coauthorship networks of researchers registered in the Lattes Platform using topological properties of graphs. For this purpose, we explored (a) strategies to develop a large Lattes curricula vitae data set, (b) an algorithm for identifying automatic coauthorships based on bibliographic information, and (c) topological metrics to investigate interactions among researchers. This study characterized coauthorship networks to gain an in-depth understanding of the network structures and dynamics (social behavior) among researchers in all available major Brazilian knowledge areas. In this study, we evaluated information from a total of 1, 131, 912 researchers associated with the eight major Brazilian knowledge areas: agricultural sciences; biological sciences; exact and earth sciences; humanities; applied social sciences; health sciences; engineering; and linguistics, letters, and arts.

Brazilian Bibliometric Coauthorship Networks

A colaboracao vem despertando interesse da comunidade cientifica ha alguns anos e muitos estudos foram realizados para conhecer a evolucao do fenomeno e sua relacao com a ciencia e sua comunicacao. Apresenta uma revisao dos aspectos teoricos e conceituais da co-autoria e da colaboracao cientifica na literatura nacional e internacional, buscando definir esta pratica sob diferentes perspectivas e indicando algumas das motivacoes que levam a ela.

/pdf/colaboracao-cientifica-revisao-teorico-conceitual-518cyz3t4c.pdf

Colaboração científica: revisão teórico-conceitual

Propoe uma revisao dos estudos de citacao na literatura, enfocando aspectos relacionados ao comportamento de citacao dos cientistas e as objecoes e aos problemas caracteristicos desta ferramenta da bibliometria. A analise das referencias citadas nas publicacoes, feita atraves dos estudos de citacao, identifica o comportamento dos pesquisadores durante a comunicacao cientifica, mapeando suas areas do conhecimento. Conclui-se que, apesar dos problemas e criticas levantadas, os estudos de citacao sao uma importante metodologia para o entendimento dos processos de comunicacao cientifica nas diferentes areas do conhecimento.

/pdf/estudos-de-citacao-uma-ferramenta-para-entender-a-49cjikl7ou.pdf

Estudos de citação: uma ferramenta para entender a comunicação científica

Discute os processos de avaliacao da producao cientifica e a necessaria criacao de indicadores para este fim. Apresenta fontes de coleta de dados para desenvolvimento de indicadores desta producao e apresenta os procedimentos para a limpeza/padronizacao e organizacao dos dados bibliometricos. Descreve softwares livres para analise bibliometrica e a importância do uso de indicadores relativos. Discute alguns procedimentos adotados pela comunidade cientifica internacional para analise multivariada de dados bibliometricos.

Procedimentos e ferramentas aplicados aos estudos bibliométricos

Brazilian scientific output in the field of Neurosciences is analyzed based on articles indexed in Web of Science from 2006 to 2013 according to bibliometric indicators of production, collaboration, impact and keywords analysis. The growth rate of Brazilian scientific output is greater than global scientific production in the area, with a higher percentage of articles in English than other research areas in Brazil and Brazilian neuroscientists preferring to publish their work in foreign journals. However, Portuguese papers were also observed in domestic journals in connection mainly to one research focus--Psychiatry. Modes of production in the area are also transdisciplinary when analyzed within the scope of research topics, which branch into issues related to basic and experimental research as well as clinical research. In addition, the Brazilian Neurosciences output is highly concentrated to a small number of authors, regions, and particularly institutions, with most output coming from public universities in the southeastern and southern states. However, there is greater participation by the private sector than in other fields of knowledge (mainly private universities and hospitals). Interinstitutional collaboration occurs in 60.79 % and international collaboration in 29.40 %. Brazil's main partners in international collaboration are the USA, Colombia, Argentina and the UK. With regard to citations, journals that most cite Brazilian Neurosciences are US, English and English-language Dutch publications, but the citing authors are linked to institutions on all continents of the world. It concludes that global reach and accelerated productivity growth does not translate into excellent impact. Thus, it is suggested to conduct further studies to determine why research is scarce in the northern and northeastern states.

Neurosciences in Brazil: a bibliometric study of main characteristics, collaboration and citations

This is an investigation of Brazilian articles indexed by SCI between 2004 and 2006 with the purpose of understanding the scientific collaboration in the Brazilian community. The 49,046 articles that have been examined show that national scientific output increased every year during the period and that articles were published in a great number of journals, 15.7% of which were national publications. The most productive areas are Chemistry, Biology, Physics and Clinical and Experimental Medicine II. Authors from several institutions were identified, which indicates Brazil has yet to establish a consolidated pattern of publication, since several of the institutions contributed only one article (59.1%). Co-publication between individuals increased in the period, representing about 96% of national output. The mean number of authors per article is 6.3. Scientific output is concentrated in few institutions, mostly public universities located in specific regions. The mean number of institutions per article is 2.4...

Samile Andrea de Souza Vanz

Papers

Colaboração científica: revisão teórico-conceitual

Estudos de citação: uma ferramenta para entender a comunicação científica

Procedimentos e ferramentas aplicados aos estudos bibliométricos

Neurosciences in Brazil: a bibliometric study of main characteristics, collaboration and citations

Scientific Output Indicators and Scientific Collaboration Network Mapping in Brazil