WorldWideScience

Sample records for comparing bibliometric statistics

  1. Relationships between Association of Research Libraries (ARL) Statistics and Bibliometric Indicators: A Principal Components Analysis

    Science.gov (United States)

    Hendrix, Dean

    2010-01-01

    This study analyzed 2005-2006 Web of Science bibliometric data from institutions belonging to the Association of Research Libraries (ARL) and corresponding ARL statistics to find any associations between indicators from the two data sets. Principal components analysis on 36 variables from 103 universities revealed obvious associations between…

  2. Comparative Study of Trace Metrics between Bibliometrics and Patentometrics

    Directory of Open Access Journals (Sweden)

    Fred Y. Ye

    2016-06-01

    Full Text Available Purpose: To comprehensively evaluate the overall performance of a group or an individual in both bibliometrics and patentometrics. Design/methodology/approach: Trace metrics were applied to the top 30 universities in the 2014 Academic Ranking of World Universities (ARWU — computer sciences, the top 30 ESI highly cited papers in the computer sciences field in 2014, as well as the top 30 assignees and the top 30 most cited patents in the National Bureau of Economic Research (NBER computer hardware and software category. Findings: We found that, by applying trace metrics, the research or marketing impact efficiency, at both group and individual levels, was clearly observed. Furthermore, trace metrics were more sensitive to the different publication-citation distributions than the average citation and h-index were. Research limitations: Trace metrics considered publications with zero citations as negative contributions. One should clarify how he/she evaluates a zero-citation paper or patent before applying trace metrics. Practical implications: Decision makers could regularly examinine the performance of their university/company by applying trace metrics and adjust their policies accordingly. Originality/value: Trace metrics could be applied both in bibliometrics and patentometrics and provide a comprehensive view. Moreover, the high sensitivity and unique impact efficiency view provided by trace metrics can facilitate decision makers in examining and adjusting their policies.

  3. Growth or Steady State? A Bibliometric Focus on International Comparative Higher Education Research

    Science.gov (United States)

    Kosmützky, Anna; Krücken, Georg

    2014-01-01

    The study combines a bibliometric approach with a content analysis of abstracts of articles to explore the patterns of international comparative higher education research in leading international journals. The overall data set covers 4,095 publications from the Web of Science for the period 1992-2012 and the amount of international comparative…

  4. Growth or Steady State? A Bibliometric Focus on International Comparative Higher Education Research

    Science.gov (United States)

    Kosmützky, Anna; Krücken, Georg

    2014-01-01

    The study combines a bibliometric approach with a content analysis of abstracts of articles to explore the patterns of international comparative higher education research in leading international journals. The overall data set covers 4,095 publications from the Web of Science for the period 1992-2012 and the amount of international comparative…

  5. A bibliometric analysis of 50 years of worldwide research on statistical process control

    Directory of Open Access Journals (Sweden)

    Fabiane Letícia Lizarelli

    Full Text Available Abstract An increasing number of papers on statistical process control (SPC has emerged in the last fifty years, especially in the last fifteen years. This may be attributed to the increased global competitiveness generated by innovation and the continuous improvement of products and processes. In this sense, SPC has a fundamentally important role in quality and production systems. The research in this paper considers the context of technological improvement and innovation of products and processes to increase corporate competitiveness. There are several other statistical technics and tools for assisting continuous improvement and innovation of products and processes but, despite the limitations in their use in the improvement projects, there is growing concern about the use of SPC. A gap between the SPC technics taught in engineering courses and their practical applications to industrial problems is observed in empirical research; thus, it is important to understand what has been done and identify the trends in SPC research. The bibliometric study in this paper is proposed in this direction and uses the Web of Science (WoS database. Data analysis indicates that there was a growth rate of more than 90% in the number of publications on SPC after 1990. Our results reveal the countries where these publications have come from, the authors with the highest number of papers and their networks. Main sources of publications are also identified; it is observed that the publications of SPC papers are concentrated in some of the international research journals, not necessarily those with the major high-impact factors. Furthermore, the papers are focused on industrial engineering, operations research and management science fields. The most common term found in the papers was cumulative sum control charts, but new topics have emerged and have been researched in the past ten years, such as multivariate methods for process monitoring and nonparametric methods.

  6. Bibliometric Analysis of Parasitological Research in Iran and Turkey: A Comparative Study

    Directory of Open Access Journals (Sweden)

    A Rashidi

    2013-06-01

    Full Text Available Background: This study was designed to assess and compare the quantity and quality of Iranian and Turkish researchers working in the field of Parasitology from bibliometric point of view.Methods: To assess the contributions and achievements of the Iranian and Turkish parasitologists, bibliometric analysis was carried out based on the citation data retrieved from Web of Science.Results: The absolute productivity of Turkish and Iranian parasitologists’ papers has almost tripled for Turkey, from 12 papers in 2002 to 36 papers in 2011, and decuple for Iran, from 10 papers to 123 from 2002 to 2010. The average number of citation per article is about 5.8 and 4 for Turkish and Iranian parasitologists’ papers, respectively. The “Veterinary Parasitology” journal was the most cited journal in both countries. The majority (more than 90% of cited items was foreign journal articles and one half of all references in journals articles dated 11 and 12 years while one half of cited books was dated within 14 to16 years for Turkish and Iranian papers, respectively.Conclusion: Based on observed data and applied model, it is anticipated that the total number of Iranian and Turkish parasitologists’ publications in Web of Science will exceed of 2512 and 240 ar­ticles per annum for Iranian and Turkish in 2020, respectively.

  7. Developing Comparative Bibliometric Indicators for Evaluating the Research Performance of Four Academic Nutrition Departments, 1992-1996: An Exploratory Study.

    Science.gov (United States)

    Ackermann, Eric George

    This study develops a set of empirically and theoretically sound citation-based bibliometric indicators of scientific research performance and applies them in an exploratory comparative study of the University of Tennessee-Knoxville's (UTK's) Nutrition Department with three of its peer programs at the University of Florida, the University of…

  8. Telescope Bibliometrics 101

    Science.gov (United States)

    Grothkopf, Uta; Lagerstrom, Jill

    During recent years, bibliometric studies have become increasingly important in evaluating individual scientists, institutes, and entire observatories. In astronomy, often librarians are involved in maintaining publication databases and compiling statistics for their institutions. In this paper, we present a look behind the scenes to understand who is interested in bibliometric statistics, which methodologies astronomy librarians apply, and what kind of features next-generation bibliographies may include.

  9. Why Bibliometrics?

    Science.gov (United States)

    Lagerstrom, J.

    2012-08-01

    Why bibliometrics? This presentation will give a brief overview of the history of bibliometrics. More specific to astronomy, this presentation will discuss the results of a survey which will reveal how various facilities HST, Chandra, ground-based, etc. are using various aspects of paper- and citation-counting to provi de information about their research output.

  10. Scientific workflows for bibliometrics.

    Science.gov (United States)

    Guler, Arzu Tugce; Waaijer, Cathelijn J F; Palmblad, Magnus

    Scientific workflows organize the assembly of specialized software into an overall data flow and are particularly well suited for multi-step analyses using different types of software tools. They are also favorable in terms of reusability, as previously designed workflows could be made publicly available through the myExperiment community and then used in other workflows. We here illustrate how scientific workflows and the Taverna workbench in particular can be used in bibliometrics. We discuss the specific capabilities of Taverna that makes this software a powerful tool in this field, such as automated data import via Web services, data extraction from XML by XPaths, and statistical analysis and visualization with R. The support of the latter is particularly relevant, as it allows integration of a number of recently developed R packages specifically for bibliometrics. Examples are used to illustrate the possibilities of Taverna in the fields of bibliometrics and scientometrics.

  11. Bibliometric-enhanced Information Retrieval

    CERN Document Server

    Mayr, Philipp; Larsen, Birger; Schaer, Philipp; Mutschke, Peter

    2013-01-01

    Bibliometric techniques are not yet widely used to enhance retrieval processes in digital libraries, although they offer value-added effects for users. In this workshop we will explore how statistical modelling of scholarship, such as Bradfordizing or network analysis of coauthorship network, can improve re-trieval services for specific communities, as well as for large, cross-domain col-lections. This workshop aims to raise awareness of the missing link between in-formation retrieval (IR) and bibliometrics/scientometrics and to create a common ground for the incorporation of bibliometric-enhanced services into retrieval at the digital library interface.

  12. Comparing Chains of Order Statistics

    CERN Document Server

    Hoffman, Charles

    2012-01-01

    Fix $0\\leq k\\leq m\\leq n$, and let $X_1,...,X_m,Y_1,...,Y_n$ be continuous, independent, and identically distributed random variables. We derive a probability distribution that compares the performance of a $k$-out-of-$m$ system to a $k$-out-of-$n$ system. By virtue of uniformity, we may recast our method of comparison to enumerating lattice paths of a certain exceedance, invoking the Chung-Feller Theorem and Ballot Numbers in our derivation. Another bijection shows that our probability distribution describes the proportion of the first $2k$ steps lying above $x=0$, for a $(m+n)$-step integer random walk, starting at $x=0$ and terminating at $x=m-n$.

  13. Bibliometric indicators for evaluating the quality of scientifc publications.

    Science.gov (United States)

    Joshi, Medha A

    2014-03-01

    Evaluation of quality and quantity of publications can be done using a set of statistical and mathematical indices called bibliometric indicators. Two major categories of indicators are (1) quantitative indicators that measure the research productivity of a researcher and (2) performance indicators that evaluate the quality of publications. Bibliometric indicators are important for both the individual researcher and organizations. They are widely used to compare the performance of the individual researchers, journals and universities. Many of the appointments, promotions and allocation of research funds are based on these indicators. This review article describes some of the currently used bibliometric indicators such as journal impact factor, crown indicator, h-index and it's variants. It is suggested that for comparison of scientific impact and scientific output of researchers due consideration should be given to various factors affecting theses indicators.

  14. Bibliometric Networks

    CERN Document Server

    Havemann, Frank

    2012-01-01

    This text is based on a translation of a chapter in a handbook about network analysis (published in German) where we tried to make beginners familiar with some basic notions and recent developments of network analysis applied to bibliometric issues (Havemann and Scharnhorst 2010). We have added some recent references.

  15. Bibliometric indicators: quality measurements of scientific publication.

    Science.gov (United States)

    Durieux, Valérie; Gevenois, Pierre Alain

    2010-05-01

    Bibliometrics is a set of mathematical and statistical methods used to analyze and measure the quantity and quality of books, articles, and other forms of publications. There are three types of bibliometric indicators: quantity indicators, which measure the productivity of a particular researcher; quality indicators, which measure the quality (or "performance") of a researcher's output; and structural indicators, which measure connections between publications, authors, and areas of research. Bibliometric indicators are especially important for researchers and organizations, as these measurements are often used in funding decisions, appointments, and promotions of researchers. As more and more scientific discoveries occur and published research results are read and then quoted by other researchers, bibliometric indicators are becoming increasingly important. This article provides an overview of the currently used bibliometric indicators and summarizes the critical elements and characteristics one should be aware of when evaluating the quantity and quality of scientific output.

  16. Bibliometric-enhanced information retrieval

    NARCIS (Netherlands)

    Mayr, Philipp; Scharnhorst, Andrea; Larsen, Birger; Schaer, Philipp; Mutschke, Peter

    2014-01-01

    Bibliometric techniques are not yet widely used to enhance retrieval processes in digital libraries, although they offer value-added effects for users. In this workshop we will explore how statistical modelling of scholarship, such as Bradfordizing or network analysis of coauthorship network, can im

  17. An application of statistics to comparative metagenomics

    Directory of Open Access Journals (Sweden)

    Rohwer Forest

    2006-03-01

    Full Text Available Abstract Background Metagenomics, sequence analyses of genomic DNA isolated directly from the environments, can be used to identify organisms and model community dynamics of a particular ecosystem. Metagenomics also has the potential to identify significantly different metabolic potential in different environments. Results Here we use a statistical method to compare curated subsystems, to predict the physiology, metabolism, and ecology from metagenomes. This approach can be used to identify those subsystems that are significantly different between metagenome sequences. Subsystems that were overrepresented in the Sargasso Sea and Acid Mine Drainage metagenome when compared to non-redundant databases were identified. Conclusion The methodology described herein applies statistics to the comparisons of metabolic potential in metagenomes. This analysis reveals those subsystems that are more, or less, represented in the different environments that are compared. These differences in metabolic potential lead to several testable hypotheses about physiology and metabolism of microbes from these ecosystems.

  18. Statistical tests to compare motif count exceptionalities

    Directory of Open Access Journals (Sweden)

    Vandewalle Vincent

    2007-03-01

    Full Text Available Abstract Background Finding over- or under-represented motifs in biological sequences is now a common task in genomics. Thanks to p-value calculation for motif counts, exceptional motifs are identified and represent candidate functional motifs. The present work addresses the related question of comparing the exceptionality of one motif in two different sequences. Just comparing the motif count p-values in each sequence is indeed not sufficient to decide if this motif is significantly more exceptional in one sequence compared to the other one. A statistical test is required. Results We develop and analyze two statistical tests, an exact binomial one and an asymptotic likelihood ratio test, to decide whether the exceptionality of a given motif is equivalent or significantly different in two sequences of interest. For that purpose, motif occurrences are modeled by Poisson processes, with a special care for overlapping motifs. Both tests can take the sequence compositions into account. As an illustration, we compare the octamer exceptionalities in the Escherichia coli K-12 backbone versus variable strain-specific loops. Conclusion The exact binomial test is particularly adapted for small counts. For large counts, we advise to use the likelihood ratio test which is asymptotic but strongly correlated with the exact binomial test and very simple to use.

  19. Statistical tools in published articles of a public health journal in 2013 and 2014: bibliometric cross-sectional study.

    Science.gov (United States)

    Arcila Quiceno, Víctor; García Restrepo, Elizabeth; Gómez Rúa, Natalia; Montenegro Martínez, Gino; Silva Ayçaguer, Luis Carlos

    2015-08-31

    Research projects use statistical resources to express in numerical or graphic terms different magnitudes like frequencies, differences or associations. The purpose of this paper is to describe the statistics tools utilization, with special emphasis in the use of conventional statistical tests and confidence intervals, to communicate results in a renowned public health peer reviewed journal in Colombia. We included the 84 articles published in the journal between 2013 and 2014. The most used resource is frequency analysis (89.3%), followed by p values (65.5%) and confidence intervals (53.6%); 48.9% of the papers used confidence intervals together with p values; 29.8% use neither of them; 16.7% of the articles only used p values and 4.8% only confidence intervals. Descriptive statistics is a tool widely used in research results presentation; the critics and caveats suggesting to avoid the exclusive use of the statistical signification test in the results presentation are not followed in the analysis and presentation of the research results.

  20. The bibliometric analysis of scholarly production

    DEFF Research Database (Denmark)

    Ellegaard, Ole; Wallin, Johan A.

    2015-01-01

    Bibliometric methods or “analysis” are now firmly established as scientific specialties and are an integral part of research evaluation methodology especially within the scientific and applied fields. The methods are used increasingly when studying various aspects of science and also in the way...... institutions and universities are ranked worldwide. A sufficient number of studies have been completed, and with the resulting literature, it is now possible to analyse the bibliometric method by using its own methodology. The bibliometric literature in this study, which was extracted from Web of Science......, is divided into two parts using a method comparable to the method of Jonkers et al. (Characteristics of bibliometrics articles in library and information sciences (LIS) and other journals, pp. 449–551, 2012: The publications either lie within the Information and Library Science (ILS) category or within...

  1. Bibliometric methods: pitfalls and possibilities

    DEFF Research Database (Denmark)

    Wallin, Johan A

    2005-01-01

    Bibliometric studies are increasingly being used for research assessment. Bibliometric indicators are strongly methodology-dependent but for all of them, various types of data normalization are an indispensable requirement. Bibliometric studies have many pitfalls; technical skill, critical sense...... and a precise knowledge about the examined scientific domain are required to carry out and interpret bibliometric investigations correctly. Udgivelsesdato: 2005-Nov...

  2. [Bibliometrics of woody medical plants in China].

    Science.gov (United States)

    Zhang, Guoquan; Si, Jinping; Zhu, Yuqiu

    2010-03-01

    Using the theory and method of bibliometrics, this paper made statistical analysis on the research papers of 16 main woody medical plants published in the period of 1998-2007, from aspects of years distribution, journals distribution, themes distribution, authors distribution and research institutes distribution, and so on. The results showed the studies, status quto and development potential of woody medical plants.

  3. The Bibliometric Properties of Article Readership Information

    Science.gov (United States)

    Kurtz, Michael J.; Eichhorn, Guenther; Accomazzi, Alberto; Grant, Carolyn S.; Demleitner, Markus; Murray, Stephen S.; Martimbeau, Nathalie; Elwell, Barbara

    The NASA Astrophysics Data System (ADS), along with astronomy's journals and data centers (a collaboration dubbed URANIA), has developed a distributed on-line digital library which has become the dominant means by which astronomers search, access and read their technical literature. Digital libraries such as the NASA Astrophysics Data System \\citep{2005JASIS.tmp....2K} permit the easy accumulation of a new type of bibliometric measure, the number of electronic accesses (``reads'') of individual articles. We explore various aspects of this new measure. We examine the obsolescence function as measured by actual reads, and show that it can be well fit by the sum of four exponentials with very different time constants. We compare the obsolescence function as measured by readership with the obsolescence function as measured by citations. We find that the citation function is proportional to the sum of two of the components of the readership function. This proves that the normative theory of citation is true in the mean. We further examine in detail the similarities and differences between the citation rate, the readership rate and the total citations for individual articles, and discuss some of the causes. Using the number of reads as a bibliometric measure for individuals, we introduce the read-cite diagram to provide a two-dimensional view of an individual's scientific productivity. We develop a simple model to account for an individual's reads and cites and use it to show that the position of a person in the read-cite diagram is a function of age, innate productivity, and work history. We show the age biases of both reads and cites, and develop two new bibliometric measures which have substantially less age bias than citations: SumProd, a weighted sum of total citations and the readership rate, intended to show the total productivity of an individual; and Read10, the readership rate for papers published in the last ten years, intended to show an individual's current

  4. Universality in bibliometrics

    Science.gov (United States)

    da Silva, Roberto; Kalil, Fahad; de Oliveira, José Palazzo Moreira; Martinez, Alexandre Souto

    2012-03-01

    Many discussions have enlarged the literature in Bibliometrics since the Hirsch proposal, the so called h-index. Ranking papers according to their citations, this index quantifies a researcher only by its greatest possible number of papers that are cited at least h times. A closed formula for h-index distribution that can be applied for distinct databases is not yet known. In fact, to obtain such distribution, the knowledge of citation distribution of the authors and its specificities are required. Instead of dealing with researchers randomly chosen, here we address different groups based on distinct databases. The first group is composed of physicists and biologists, with data extracted from Institute of Scientific Information (ISI). The second group is composed of computer scientists, in which data were extracted from Google-Scholar system. In this paper, we obtain a general formula for the h-index probability density function (pdf) for groups of authors by using generalized exponentials in the context of escort probability. Our analysis includes the use of several statistical methods to estimate the necessary parameters. Also an exhaustive comparison among the possible candidate distributions are used to describe the way the citations are distributed among authors. The h-index pdf should be used to classify groups of researchers from a quantitative point of view, which is meaningfully interesting to eliminate obscure qualitative methods.

  5. Editorial for the Bibliometric-enhanced Information Retrieval Workshop at ECIR 2014

    OpenAIRE

    2014-01-01

    This first "Bibliometric-enhanced Information Retrieval" (BIR 2014) workshop aims to engage with the IR community about possible links to bibliometrics and scholarly communication. Bibliometric techniques are not yet widely used to enhance retrieval processes in digital libraries, although they offer value-added effects for users. In this workshop we will explore how statistical modelling of scholarship, such as Bradfordizing or network analysis of co-authorship network, can improve retrieval...

  6. The validation of (advanced) bibliometric indicators through peer assessments: A comparative study using data from InCites and F1000

    NARCIS (Netherlands)

    Bornmann, L.; Leydesdorff, L.

    2013-01-01

    The data of F1000 and InCites provide us with the unique opportunity to investigate the relationship between peers’ ratings and bibliometric metrics on a broad and comprehensive data set with high-quality ratings. F1000 is a post-publication peer review system of the biomedical literature. The compa

  7. A descriptive and historical review of bibliometrics with applications to medical sciences.

    Science.gov (United States)

    Thompson, Dennis F; Walker, Cheri K

    2015-06-01

    The discipline of bibliometrics involves the application of mathematical and statistical methods to scholarly publications. The first attempts at systematic data collection were provided by Alfred Lotka and Samuel Bradford, who subsequently established the foundational laws of bibliometrics. Eugene Garfield ushered in the modern era of bibliometrics with the routine use of citation analysis and systematized processing. Key elements of bibliometric analysis include database coverage, consistency and accuracy of the data, data fields, search options, and analysis and use of metrics. A number of bibliometric applications are currently being used in medical science and health care. Bibliometric parameters and indexes may be increasingly used by grant funding sources as measures of research success. Universities may build benchmarking standards from bibliometric data to determine academic achievement through promotion and tenure guidelines in the future. This article reviews the history, definition, laws, and elements of bibliometric principles and provides examples of bibliometric applications to the broader health care community. To accomplish this, the Medline (1966-2014) and Web of Science (1945-2014) databases were searched to identify relevant articles; select articles were also cross-referenced. Articles selected were those that provided background, history, descriptive analysis, and application of bibliometric principles and metrics to medical science and health care. No attempt was made to cover all areas exhaustively; rather, key articles were chosen that illustrate bibliometric concepts and enhance the reader's knowledge. It is important that faculty and researchers understand the limitations and appropriate uses of bibliometric data. Bibliometrics has considerable potential as a research area for health care scientists and practitioners that can be used to discover new information about academic trends, pharmacotherapy, disease, and broader health sciences

  8. Bibliometric indicators of young authors in astrophysics

    DEFF Research Database (Denmark)

    Havemann, Frank; Larsen, Birger

    2015-01-01

    We test 16 bibliometric indicators with respect to their validity at the level of the individual researcher by estimating their power to predict later successful researchers. We compare the indicators of a sample of astrophysics researchers who later co-authored highly cited papers before...

  9. Application of Bibliometric Statistical Based on NoteExpress---Taking as a Case of Study the Articles from 2010-2012 Information Science%基于NoteExpress的文献计量统计分析应用--以2010-2012年《情报科学》刊载文献为例

    Institute of Scientific and Technical Information of China (English)

    龚舒野

    2014-01-01

    Base on the articles published on 2010-2012 Information Science, this article studies the application of NoteExpress, a literature management software, to bibliometric statistics from such angles as bibliographic data collection, folder information statistics, inputting as well as outputting, thus providing a new bibliometric statistical method.%以《情报科学》2010-2012年间发表的论文为数据源,探讨了利用文献管理软件NoteExpress在进行题录数据采集、使用文件夹信息统计功能、导出与导入等功能进行文献计量统计方面的应用,从而提供了新的文献计量统计方法。

  10. Assessing the bibliometric productivity of forest scientists in Italy

    Directory of Open Access Journals (Sweden)

    Francesca Giannetti

    2016-07-01

    Full Text Available Since 2010, the Italian Ministry of University and Research issued new evaluation protocols to select candidates for University professorships and assess the bibliometric productivity of Universities and Research Institutes based on bibliometric indicators, i.e. scientific paper and citation numbers and the h-index. Under this framework, the objective of this study was to quantify the bibliometric productivity of the Italian forest research community during the 2002-2012 period. We examined the following productivity parameters: (i the bibliometric productivity under the Forestry subject category at the global level; (ii compared the aggregated bibliometric productivity of Italian forest scientists with scientists from other countries; (iii analyzed publication and citation temporal trends of Italian forest scientists and their international collaborations; and (iv characterized productivity distribution among Italian forest scientists at different career levels. Results indicated the following: (i the UK is the most efficient country based on the ratio between Gross Domestic Spending (GDS on Research and Development (R&D and bibliometric productivity under the Forestry subject category, followed by Italy; (ii Italian forest scientist productivity exhibited a significant positive time trend, but was characterized by high inequality across authors; (iii one-half of the Italian forest scientist publications were written in collaboration with foreign scientists; (iv a strong relationship exists between bibliometric indicators calculated by WOS and SCOPUS, suggesting these two databases have the same potential to evaluate the forestry research community; and (v self-citations did not significantly affect the rank of Italian forest scientists.

  11. Bibliometrics, Librarians, and Bibliograms

    Science.gov (United States)

    White, Howard D.

    2016-01-01

    This paper sets forth an integrated way of introducing bibliometrics to relatively non-quantitative audiences, such as librarians and iSchool students. The integrative device is the bibliogram, a linguistic object consisting of a seed term and the terms that co-occur with it, ranked by their co-occurrence counts with the seed--a standard…

  12. What Is Bibliometrics and Why Should You Care?

    Energy Technology Data Exchange (ETDEWEB)

    McBurney, Melissa K.(BATTELLE (PACIFIC NW LAB)); Novak, Pamela L.(BATTELLE (PACIFIC NW LAB))

    2002-09-17

    When we help an author publish a book or journal article, is that the end of the job? Viewed in the aggregate, a company's publications represent one of its greatest business assets. Can professionals in the information and communication fields help their company understand the return on its investment in publishing? The field of bibliometrics studies publication patterns by using quantitative analysis and statistics. Bibliometrics can be either descriptive, such as looking at how many articles your organization has published, or evaluative, such as using citation analysis to look at how those articles influenced subsequent research by others. Counting publications can be useful for doing some comparisons, but citation analysis allows you to look at the impact those articles have had on others by determining how often they are cited. Citation analysis can also show what journals, organizations, and even countries have high impact in different fields of research. The Institute for Scientific Information (ISI) has been a leader in the citation analysis field since 1961, when ISI published the first Science Citation Index. Pacific Northwest National Laboratory has been using data from ISI for both descriptive and evaluative purposes. This data is used to track what the researchers at the Laboratory are writing and then comparing research groups within the organization over a period of years to identify trends and opportunities. PNNL has also used citation analysis to explore what organizations and academic institutions are doing research in certain fields for partnering opportunities. We have realized that the electronic system PNNL uses to approve and track its publications contains very valuable bibliometric data that can be used to make decisions about business directions for the company.

  13. 我国图书馆知识产权研究的文献计量统计分析%Bibliometric Statistical Analysis on Research of Library Intellectual Property in China

    Institute of Scientific and Technical Information of China (English)

    余少瑛

    2012-01-01

    Based on literature included in CNKI digital publishing platform, this paper makes literature bibliometric statistical analysis on intellectual property of library in China through these aspects of age distribution, source of journals distribution, literature analysis of highly cited, researchers and institutions distribution, research themes of research and literature distribution, fund distribution. Try to sum up the study on intellectual property of library in recent years, so as to provide reference for further research and development.%以CNKI数字出版平台所收录的文献为依据,对我国图书馆知识产权研究的文献进行文献计量学统计,并从文献年代分布、来源期刊分布、高被引文献分析、研究作者及机构分析、研究热点及文献研究主题分布、基金资助情况分布进行统计分析,试图对我国有关图书馆知识产权的研究现状做出总结,从而为进一步研究和发展提供参考。

  14. Characterizing scientific production of Italian Oral Surgery professionals through evaluation of bibliometric indices.

    Science.gov (United States)

    Tetè, Stefano; Zizzari, Vincenzo Luca; De Carlo, Alessandro; Lorusso, Felice; Di Nicola, Marta; Piattelli, Adriano; Gherlone, Enrico; Polimeni, Antonella

    2014-01-01

    The aim of this study was to characterize the scientific production of Italian Oral Surgery professionals by evaluating different bibliometric indices. The bibliometric evaluation was conducted on the Scopus Database upon all the Active Members joining three important Italian scientific societies in Oral Surgery (SIdCO, SIO, and SICOI). The scientific production was analysed by considering the number of total publications, number of total citations, h-index, and hc-index. Moreover, the overall sample was divided into two groups (Academics and Not Academics), according to the fact the professionals had or not a university position, and then into sub-groups according to the different career lengths. Statistical analyses were performed to compare the scientific productivity amongst groups. For all the considered parameters a lack of homogeneity between groups was reported, and significantly greater mean values were recorded for the Academics compared to the Not Academics Group. Moreover, the h-index values increased more regularly as the career length progressed than the hc-index values, even if the last seemed to be less variable. h- and hc-indices are both stable bibliometric parameters, but as the hc-index values are related not only to the number of citation but also to their age, it seems to be less influenced by the authors' career length. Bibliometric analysis of the scientific production in dentistry may facilitate the recognition of factors that may further enhance research activity and clinical performance and be useful for a comparative assessment of authors or research groups in terms of quality and quantity of the scientific production.

  15. Bibliometric Studies of Scientific Productivity.

    Science.gov (United States)

    1978-03-01

    In 1926, Alfred J. Lotka examined the scientific publishing productivity of chemists. His bibliometric study of the number of chemists listed in...square law’ of scientific productivity in which the frequency of authors publishing x papers varied inversely as the square of x. Bibliometric research is

  16. BIR 2014 - Bibliometric-enhanced Information Retrieval

    DEFF Research Database (Denmark)

    This first “Bibliometric-enhanced Information Retrieval” (BIR 2014) workshop1 aims to engage with the IR community about possible links to bibliometrics and scholarly communication. Bibliometric techniques are not yet widely used to enhance retrieval processes in digital libraries, although...... for the incorporation of bibliometric-enhanced services into retrieval at the digital library interface. Our interests include information retrieval, information seeking, science modelling, network analysis, and digital libraries. The goal is to apply insights from bibliometrics, scientometrics, and informetrics...

  17. A bibliometric analysis of occupational therapy publications.

    Science.gov (United States)

    Brown, Ted; Gutman, Sharon A; Ho, Yuh-Shan; Fong, Kenneth N K

    2018-01-01

    Bibliometrics involves the statistical analysis of the publications in a specific discipline or subject area. A bibliometric analysis of the occupational therapy refereed literature is needed. A bibliometric analysis was completed of the occupational therapy literature from 1991-2014, indexed in the Science Citation Index-Expanded or the Social Sciences Citation Index. Publications were searched by title, abstract, keywords, and KeyWords Plus. Total number of article citations, citations per journal, and contributions per country, individual authors, and institution were calculated. 5,315 occupational therapy articles were published in 821 journals. It appears that there is a citation window of an approximate 10-year period between the time of publication and the peak number of citations an article receives. The top three most highly cited articles were published in Developmental Medicine and Child Neurology, JAMA, and Lancet. AJOT, BJOT and AOTJ published the largest number of occupational therapy articles with the United States, Australia, and Canada producing the highest number of publications. McMaster University, the University of Queensland, and the University of Toronto were the institutions that published the largest number of occupational therapy journal articles. The occupational therapy literature is growing and the frequency of article citation is increasing.

  18. Automated Research Impact Assessment: A New Bibliometrics Approach.

    Science.gov (United States)

    Drew, Christina H; Pettibone, Kristianna G; Finch, Fallis Owen; Giles, Douglas; Jordan, Paul

    2016-03-01

    As federal programs are held more accountable for their research investments, The National Institute of Environmental Health Sciences (NIEHS) has developed a new method to quantify the impact of our funded research on the scientific and broader communities. In this article we review traditional bibliometric analyses, address challenges associated with them, and describe a new bibliometric analysis method, the Automated Research Impact Assessment (ARIA). ARIA taps into a resource that has only rarely been used for bibliometric analyses: references cited in "important" research artifacts, such as policies, regulations, clinical guidelines, and expert panel reports. The approach includes new statistics that science managers can use to benchmark contributions to research by funding source. This new method provides the ability to conduct automated impact analyses of federal research that can be incorporated in program evaluations. We apply this method to several case studies to examine the impact of NIEHS funded research.

  19. On chaos in bibliometric terminology

    OpenAIRE

    V. S. Lazarev; ЛАЗАРЕВ В.С.

    1996-01-01

    On behalf of a case study of articles on bibliometric selection and ranking the variance in terminology of the properties of journals is shown: the same properties are called in various manners, while one and the same terms have different meanings. Similar inconsistencies are found in the terms denoting readers’ activities which are studied in bibliometrics for the assessment of the use of periodicals. The author concludes that there are actually only two properties of periodicals that are qu...

  20. Issues in biomedical statistics: comparing means under normal distribution theory.

    Science.gov (United States)

    Ludbrook, J

    1995-04-01

    The test used most commonly in biomedical research to compare means when measurements have been made on a continuous scale is Student's t-test, followed closely by various forms of analysis of variance. These tests require that defined populations have been randomly sampled, but there are other assumptions about populations and samples that must be satisfied. These include: (i) normality of the population distributions; (ii) equal variance in those normal populations; and (iii) statistical independence of the samples. This review offers advice to investigators on how to recognize breaches of the assumptions of normality and equality of variance, and how to deal with them by modifying the usual t-test or by transforming the experimental data. The sample-size also has an important bearing on statistical inferences: (i) if it is too small, the risk of Type II error is inflated; and (ii) inequality of sample size exaggerates the effects of inequality of variance. The assumption of independence is breached if repeated measurements are made serially rather than in random order, but adjustments to analysis of variance can be made to correct for the inflated risk of Type I error. The review also considers the problem of making multiple comparisons of means, and recommends solutions.

  1. Next Generation Bibliometrics and the Evolution of the ESO Telescope Bibliography

    Science.gov (United States)

    Erdmann, C.; Grothkopf, U.

    2010-10-01

    Bibliometric studies typically focus on citation and publication analysis. Due to recent advances in web technology along with greater access to web content, bibliometric research can include statistics and measures that were once difficult to obtain. The European Southern Observatory's Telescope Bibliography (ESO telbib), a content management system for refereed articles containing ESO data, provides an excellent test-bed for exploring next generation bibliometrics. Through web services provided by the NASA Astrophysics Data System (ADS) Abstract Service among others, previously unavailable information can be imported into telbib where it can be analyzed in further detail. Though some telbib features are still in their infancy, some interesting trends can already be derived.

  2. A method for statistically comparing spatial distribution maps

    Directory of Open Access Journals (Sweden)

    Reynolds Mary G

    2009-01-01

    Full Text Available Abstract Background Ecological niche modeling is a method for estimation of species distributions based on certain ecological parameters. Thus far, empirical determination of significant differences between independently generated distribution maps for a single species (maps which are created through equivalent processes, but with different ecological input parameters, has been challenging. Results We describe a method for comparing model outcomes, which allows a statistical evaluation of whether the strength of prediction and breadth of predicted areas is measurably different between projected distributions. To create ecological niche models for statistical comparison, we utilized GARP (Genetic Algorithm for Rule-Set Production software to generate ecological niche models of human monkeypox in Africa. We created several models, keeping constant the case location input records for each model but varying the ecological input data. In order to assess the relative importance of each ecological parameter included in the development of the individual predicted distributions, we performed pixel-to-pixel comparisons between model outcomes and calculated the mean difference in pixel scores. We used a two sample Student's t-test, (assuming as null hypothesis that both maps were identical to each other regardless of which input parameters were used to examine whether the mean difference in corresponding pixel scores from one map to another was greater than would be expected by chance alone. We also utilized weighted kappa statistics, frequency distributions, and percent difference to look at the disparities in pixel scores. Multiple independent statistical tests indicated precipitation as the single most important independent ecological parameter in the niche model for human monkeypox disease. Conclusion In addition to improving our understanding of the natural factors influencing the distribution of human monkeypox disease, such pixel-to-pixel comparison

  3. [Scientometrics and bibliometrics of chronotherapy].

    Science.gov (United States)

    Zhao, Ping; Xu, Ping; Li, Bingyan; Wang, Zhengrong

    2005-02-01

    In order to retrieve Chinese and foreign articles of chronotherapy, we searched Chinese databases of CBM, CMCC and foreign series databases in OVID and hence revealed and assessed the current status, research trend and level of chronotherapy in China and in foreign countries by means of scientometric and bibliometric parameters. ProCite5 software and handsearching were used to manage, check and statistically analyze the searched papers so as to find the parameters which included distributions of databases, years, authors, periodicals, subject headings, organizations and nations. 91 Chinese papers were identified which were distributed in 73 kinds of journals and in subject headings, e.g., Traditional Chinese medicine, cardiovascular diseases, neoplasms, asthma, peptic ulcer, diabetes mellitus, general review of chronotherapy, etc. 480 foreign articles were identified which mainly came from EMBASE and MEDLINE and were distributed in 285 types of journals and 35 nations and regions. There were 14 journals which recorded five or more articles. 12 researchers published more than five articles. Paul Brousse Hospital, University of Texas, University of Connecticut School of Medicine, Jichi Medical School and University of Minnesota were the core research institutes. There was no core author or core journal or core institute in China up till now. However, core authors, core journals and core research institutes had come into being in foreign countries; they were mainly from the Euro-American developed countries and had done well in chronotherapy.

  4. [Anales Españoles de Pediatría 2001. Bibliometric indicators of scientific quality].

    Science.gov (United States)

    González de Dios, J

    2002-08-01

    BACKGROUND. One important objective of Anales Españoles de Pediatría (An Esp Pediatr) is to be included in Journal Citation Reports-Science Citation Index and the main step to achieve this is to increase the scientific quality of this Spanish journal. Bibliometric indicators are important tools used to determine the quality of scientific publications. A bibliometric study of all the original articles published in An Esp Pediatr in 2001 (n 76) was performed; bibliometric indicators were classified into quantitative and qualitative (statistical analyses and level of scientific evidence). The results were compared with the original articles published in the journal from 1994 to June 2000 (n 733) and with the original articles published in Pediatrics in 2001 (n 276). The differences found in An Esp Pediatr between the two study periods were the following in 2001: greater collaboration between epidemiologists and/or biostatisticians in the authorship of articles (19.7 %), increased complexity of statistical analyses (statistical accessibility > 7 in 25 %) and greater use of evidence-based methodological concepts (19.7 %). However, no improvement was found in the scientific evidence (evidence was good in only 1.4 % and average in 25.7 %). Other aspects of interest were a lower number of original articles (due to an increase in other types of articles, such as Letters to the Editor or Special Articles) and a greater percentage of articles on evidence-based medicine or articles using its methodology. The differences in bibliometric indicators of quality found between An Esp Pediatr and Pediatrics continued to be considerable: statistical accessibility, evidence-based methodological concepts and scientific evidence (for example, good evidence was 22 times more frequent in Pediatrics). The scientific quality of An Esp Pediatr improved in 2001 compared with that of previous years, but the differences found between this journal and the gold standard of Pediatrics are still

  5. Bibliometrics for Social Validation

    Science.gov (United States)

    2016-01-01

    This paper introduces a bibliometric, citation network-based method for assessing the social validation of novel research, and applies this method to the development of high-throughput toxicology research at the US Environmental Protection Agency. Social validation refers to the acceptance of novel research methods by a relevant scientific community; it is formally independent of the technical validation of methods, and is frequently studied in history, philosophy, and social studies of science using qualitative methods. The quantitative methods introduced here find that high-throughput toxicology methods are spread throughout a large and well-connected research community, which suggests high social validation. Further assessment of social validation involving mixed qualitative and quantitative methods are discussed in the conclusion. PMID:28005974

  6. Universality in Bibliometrics

    CERN Document Server

    da Silva, Roberto; Martinez, Alexandre Souto; de Oliveira, Jose Palazzo Moreira

    2011-01-01

    Many discussions have enlarged the literature in Bibliometrics since the Hirsh proposal, the so called $h$-index. Ranking papers according to their citations, this index quantifies a researcher only by its greatest possible number of papers that are cited at least $h$ times. A closed formula for $h$-index distribution that can be applied for distinct databases is not yet known. In fact, to obtain such distribution, the knowledge of citation distribution of the authors and its specificities are required. Instead of dealing with researchers randomly chosen, here we address different groups based on distinct databases. The first group is composed by physicists and biologists, with data extracted from Institute of Scientific Information (ISI). The second group composed by computer scientists, which data were extracted from Google-Scholar system. In this paper, we obtain a general formula for the $h$-index probability density function (pdf) for groups of authors by using generalized exponentials in the context of ...

  7. Bibliometrics for Social Validation.

    Science.gov (United States)

    Hicks, Daniel J

    2016-01-01

    This paper introduces a bibliometric, citation network-based method for assessing the social validation of novel research, and applies this method to the development of high-throughput toxicology research at the US Environmental Protection Agency. Social validation refers to the acceptance of novel research methods by a relevant scientific community; it is formally independent of the technical validation of methods, and is frequently studied in history, philosophy, and social studies of science using qualitative methods. The quantitative methods introduced here find that high-throughput toxicology methods are spread throughout a large and well-connected research community, which suggests high social validation. Further assessment of social validation involving mixed qualitative and quantitative methods are discussed in the conclusion.

  8. Forensic Accounting: Bibliometric Analysis in Brazilian Journals

    Directory of Open Access Journals (Sweden)

    Geovanna Lopes Salles

    2016-04-01

    Full Text Available This paper used a bibliometric research to compare and draw an overview of scientific production on forensic Accounting area, published in Brazilian journals in the period between 2005 and 2014 regarding the number of publications, characteristics of the authors, published topics, methodologies and its subclasses and and journals that publish in the area. It was collected and analyzed 48 articles the information as variation of year publication, subjects treated by, authors and their characteristics, Qualis classification, methodology, methodological nature applied, description of the empirical method and journals that have published articles in the area. Descriptive statistics were used to analyze the data. As a result it was found that the main subjects considered are related to the "work of the expert accountant", "expert opinion" and expertise within the context of judicial proceedings. Regarding the authors the vast majority produce only one article in the area over the 10 years examined, and these authors, 64,58% were male. The Qualis extract of the articles is located between C and B1, indicating that the publications fail to achieve high standards of academic quality. On the methodology it was found that 91.67% are empirical research, of these 78% ranked in quantitative or qualitative and 83% are publications opting for descriptive techniques. Regarding the journals, it was found that 50% have only one publication on "forensic accounting", indicating that it is not repeated exposure, as the number of publications ranging from two to five in the other 50% of journals. It is concluded that scientific research in forensic accounting area are still relatively embryonic, lacking certain softening related to the subjects, number of publications and quality of intellectual production.

  9. Faculty Decisions on Serials Subscriptions Differ Significantly from Decisions Predicted by a Bibliometric Tool.

    Directory of Open Access Journals (Sweden)

    Sue F. Phelps

    2016-03-01

    Full Text Available Objective – To compare faculty choices of serials subscription cancellations to the scores of a bibliometric tool. Design – Natural experiment. Data was collected about faculty valuations of serials. The California Digital Library Weighted Value Algorithm (CDL-WVA was used to measure the value of journals to a particular library. These two sets of scores were then compared. Setting – A public research university in the United States of America. Subjects – Teaching and research faculty, as well as serials data. Methods – Experimental methodology was used to compare faculty valuations of serials (based on their journal cancellation choices to bibliometric valuations of the same journal titles (determined by CDL-WVA scores to identify the match rate between the faculty choices and the bibliographic data. Faculty were asked to select titles to cancel that totaled approximately 30% of the budget for their disciplinary fund code. This “keep” or “cancel” choice was the binary variable for the study. Usage data was gathered for articles downloaded through the link resolver for titles in each disciplinary dataset, and the CDL-WVA scores were determined for each journal title based on utility, quality, and cost effectiveness. Titles within each dataset were ranked highest to lowest using the CDL-WVA scores within each fund code, and then by subscription cost for titles with the same CDL-WVA score. The journal titles selected for comparison were those that ranked above the approximate 30% of titles chosen for cancellation by faculty and CDL-WVA scores. Researchers estimated an odds ratio of faculty choosing to keep a title and a CDL-WVA score that indicated the title should be kept. The p-value for that result was less than 0.0001, indicating that there was a negligible probability that the results were by chance. They also applied logistic regression to quantify the association between the numeric score of CDL-WVA and the binary variable

  10. A comparative assessment of statistical methods for extreme weather analysis

    Science.gov (United States)

    Schlögl, Matthias; Laaha, Gregor

    2017-04-01

    Extreme weather exposure assessment is of major importance for scientists and practitioners alike. We compare different extreme value approaches and fitting methods with respect to their value for assessing extreme precipitation and temperature impacts. Based on an Austrian data set from 25 meteorological stations representing diverse meteorological conditions, we assess the added value of partial duration series over the standardly used annual maxima series in order to give recommendations for performing extreme value statistics of meteorological hazards. Results show the merits of the robust L-moment estimation, which yielded better results than maximum likelihood estimation in 62 % of all cases. At the same time, results question the general assumption of the threshold excess approach (employing partial duration series, PDS) being superior to the block maxima approach (employing annual maxima series, AMS) due to information gain. For low return periods (non-extreme events) the PDS approach tends to overestimate return levels as compared to the AMS approach, whereas an opposite behavior was found for high return levels (extreme events). In extreme cases, an inappropriate threshold was shown to lead to considerable biases that may outperform the possible gain of information from including additional extreme events by far. This effect was neither visible from the square-root criterion, nor from standardly used graphical diagnosis (mean residual life plot), but from a direct comparison of AMS and PDS in synoptic quantile plots. We therefore recommend performing AMS and PDS approaches simultaneously in order to select the best suited approach. This will make the analyses more robust, in cases where threshold selection and dependency introduces biases to the PDS approach, but also in cases where the AMS contains non-extreme events that may introduce similar biases. For assessing the performance of extreme events we recommend conditional performance measures that focus

  11. Reactive tendencies of bibliometric indicators: Trends in the alphabetization of authorship in economics and information science

    DEFF Research Database (Denmark)

    Faber Frandsen, Tove; Nicolaisen, Jeppe

    The paper adds a category to the list of possible negative steering effects of bibliometric indicators with a category for changes in credit assignment. The results of a longitudinal study of credit assignment practices in the fields of economics and information science are presented. The practice...... explanation for the demonstrated difference could be that information scientists have been much more aware of the bibliometric consequences of being first author compared to their colleagues in comparable fields (e.g., economics). This and other possible reactive tendencies of bibliometric indicators...

  12. Understanding bibliometric parameters and analysis.

    Science.gov (United States)

    Choudhri, Asim F; Siddiqui, Adeel; Khan, Nickalus R; Cohen, Harris L

    2015-01-01

    Bibliometric parameters have become an important part of modern assessment of academic productivity. These parameters exist for the purpose of evaluating authors (publication count, citation count, h-index, m-quotient, hc-index, e-index, g-index, i-10 [i-n] index) and journals (impact factor, Eigenfactor, article influence score, SCImago journal rank, source-normalized impact per paper). Although in recent years there has been a proliferation of bibliometric parameters, the true meaning and appropriate use of these parameters is generally not well understood. Effective use of existing and emerging bibliometric tools can aid in assessment of academic productivity, including readiness for promotions and other awards. However, if not properly understood, the data can be misinterpreted and may be subject to manipulation. Familiarity with bibliometric parameters will aid in their effective implementation in the review of authors-whether individuals or groups-and journals, as well as their possible use in the promotions review process, maximizing the effectiveness of bibliometric analysis.

  13. Web Applications of Bibliometrics and Link Analysis

    Directory of Open Access Journals (Sweden)

    Faribourz Droudi

    2010-04-01

    Full Text Available The present study aims to introduce and analyze bibliometric application within Web and also to expounds on the status of link analysis in order to point out its application with respect to the existing web-based information sources. Findings indicate that bibliometrics could have required application in the area of digital resources available through Net. Link analysis is a process by which one could make statistical analysis of correlation between hyperlinks and therefore understand the accuracy, veracity and efficacy of citations within a digital document. Link analysis, in effect, is counted as a part of information ranking algorithm within the web environment. The number, linkage and quality of given links to a website are of utmost importance for ranking/status in the Web. The tools applied in this topic include, page ranking strategy, link analysis algorithm, latent semantic indexing and the classical input-output model. The present study analyzes Big Web and Small Web link analysis and explains the means for utilizing web charts in order to better understand the link analysis process.

  14. Bibliometrics, dermatology and contact dermatitis.

    Science.gov (United States)

    Smith, Derek R

    2008-09-01

    Although the fields of bibliometrics and citation analysis have existed for many years, relatively few studies have specifically focused on the dermatological literature. This article reviews citation-based research in the dermatology journals, with a particular interest in manuscripts that have included Contact Dermatitis as part of their analysis. Overall, it can be seen that the rise of bibliometrics during the mid-20th century and its subsequent application to dermatology has provided an interesting insight into the progression of research within our discipline. Further investigation of citation trends and top-cited papers in skin research periodicals would certainly help complement the current body of knowledge.

  15. Radiological research in Europe: a bibliometric study.

    Science.gov (United States)

    Mela, G S; Martinoli, C; Poggi, E; Derchi, L E

    2003-04-01

    We performed a bibliometric search to evaluate number and scientific "weight" of papers written by European radiologists, as compared with colleagues from other countries, to measure the contribution of European researchers to radiology journals, and to correlate bibliometric parameters with some socio-economic factors of the different European nations. We considered all peer-reviewed articles published by radiologists in biomedical journals quoted by ISI over the 1995-2000 period. To identify authors as radiologists, the string "radiol" had to appear in the address of the corresponding author, and his country was considered as the country of origin of the paper. The definition of Europe included the 15 countries of the European Union, plus Norway and Switzerland. The scientific "weight" of the paper was assumed to be the impact factor of the journal of the publication in that given year. Then, we considered the annual indexes number of papers/population and number of papers/Gross Domestic Product (GDP) in each country. Data were retrieved from the Eurostat annual statistic reviews. From these bases, we obtained a comparison of the scientific production among European radiologists, those from the U.S. and those from the rest of the world. European radiological research is responsible of almost 40% of the world scientific production in our field, and Germany, UK and France are the leading publishers in Europe. An increase of the number of papers written by European radiologists was noted in the 1995-2000 period, whereas the production from the U.S. had a slight decrease. The mean concentration indexes papers/inhabitants and papers/GDP were significantly lower in Europe than in the U.S., even if some small European countries had higher values than the U.S. As a mean, European research received a lower impact factor than that from the U.S. The assessment of research output has progressively developed as an important issue for the scientific research community

  16. The bibliometric analysis of scholarly production: How great is the impact?

    Science.gov (United States)

    Ellegaard, Ole; Wallin, Johan A

    Bibliometric methods or "analysis" are now firmly established as scientific specialties and are an integral part of research evaluation methodology especially within the scientific and applied fields. The methods are used increasingly when studying various aspects of science and also in the way institutions and universities are ranked worldwide. A sufficient number of studies have been completed, and with the resulting literature, it is now possible to analyse the bibliometric method by using its own methodology. The bibliometric literature in this study, which was extracted from Web of Science, is divided into two parts using a method comparable to the method of Jonkers et al. (Characteristics of bibliometrics articles in library and information sciences (LIS) and other journals, pp. 449-551, 2012: The publications either lie within the Information and Library Science (ILS) category or within the non-ILS category which includes more applied, "subject" based studies. The impact in the different groupings is judged by means of citation analysis using normalized data and an almost linear increase can be observed from 1994 onwards in the non-ILS category. The implication for the dissemination and use of the bibliometric methods in the different contexts is discussed. A keyword analysis identifies the most popular subjects covered by bibliometric analysis, and multidisciplinary articles are shown to have the highest impact. A noticeable shift is observed in those countries which contribute to the pool of bibliometric analysis, as well as a self-perpetuating effect in giving and taking references.

  17. Bibliometric indexes, databases and impact factors in cardiology.

    Science.gov (United States)

    Bienert, Igor R C; Oliveira, Rogério Carvalho de; Andrade, Pedro Beraldo de; Caramori, Carlos Antonio

    2015-01-01

    Bibliometry is a quantitative statistical technique to measure levels of production and dissemination of knowledge, as well as a useful tool to track the development of an scientific area. The valuation of production required for recognition of researchers and magazines is accomplished through tools called bibliometric indexes, divided into quality indicators and scientific impact. Initially developed for monographs of statistical measures especially in libraries, today bibliometrics is mainly used to evaluate productivity of authors and citation repercussion. However, these tools have limitations and sometimes provoke controversies about indiscriminate application, leading to the development of newer indexes. It is important to know the most common search indexes and use it properly even acknowledging its limitations as it has a direct impact in their daily practice, reputation and funds achievement.

  18. Graphics and statistics for cardiology: comparing categorical and continuous variables.

    Science.gov (United States)

    Rice, Kenneth; Lumley, Thomas

    2016-03-01

    Graphs are a standard tool for succinctly describing data, and play a crucial role supporting statistical analyses of that data. However, all too often, graphical display of data in submitted manuscripts is either inappropriate for the task at hand or poorly executed, requiring revision prior to publication. To assist authors, in this paper, we present several forms of graph, for data typically seen in Heart, including dot charts, violin plots, histograms and boxplots for quantitative data, and mosaic plots and bar charts for categorical data. Justification for using these specific plots is drawn from the literature on visual perception; we also provide software instruction and examples, using various popular packages.

  19. BIR 2014 - Bibliometric-enhanced Information Retrieval

    DEFF Research Database (Denmark)

    This first “Bibliometric-enhanced Information Retrieval” (BIR 2014) workshop1 aims to engage with the IR community about possible links to bibliometrics and scholarly communication. Bibliometric techniques are not yet widely used to enhance retrieval processes in digital libraries, although...... analysis of co-authorship network, can improve retrieval services for specific communities, as well as for large, cross-domain collections. This workshop aims to raise awareness of the missing link between information retrieval (IR) and bibliometrics / scientometrics and to create a common ground...... for the incorporation of bibliometric-enhanced services into retrieval at the digital library interface. Our interests include information retrieval, information seeking, science modelling, network analysis, and digital libraries. The goal is to apply insights from bibliometrics, scientometrics, and informetrics...

  20. A Bibliometric Analysis of Climate Engineering Research

    Science.gov (United States)

    Belter, C. W.; Seidel, D. J.

    2013-12-01

    The past five years have seen a dramatic increase in the number of media and scientific publications on the topic of climate engineering, or geoengineering, and some scientists are increasingly calling for more research on climate engineering as a possible supplement to climate change mitigation and adaptation strategies. In this context, understanding the current state of climate engineering research can help inform policy discussions and guide future research directions. Bibliometric analysis - the quantitative analysis of publications - is particularly applicable to fields with large bodies of literature that are difficult to summarize by traditional review methods. The multidisciplinary nature of the published literature on climate engineering makes it an ideal candidate for bibliometric analysis. Publications on climate engineering are found to be relatively recent (more than half of all articles during 1988-2011 were published since 2008), include a higher than average percentage of non-research articles (30% compared with 8-15% in related scientific disciplines), and be predominately produced by countries located in the Northern Hemisphere and speaking English. The majority of this literature focuses on land-based methods of carbon sequestration, ocean iron fertilization, and solar radiation management and is produced with little collaboration among research groups. This study provides a summary of existing publications on climate engineering, a perspective on the scientific underpinnings of the global dialogue on climate engineering, and a baseline for quantitatively monitoring the development of climate engineering research in the future.

  1. Comparing the Statistical Fate of Paralogous and Orthologous Sequences.

    Science.gov (United States)

    Massip, Florian; Sheinman, Michael; Schbath, Sophie; Arndt, Peter F

    2016-10-01

    For several decades, sequence alignment has been a widely used tool in bioinformatics. For instance, finding homologous sequences with a known function in large databases is used to get insight into the function of nonannotated genomic regions. Very efficient tools like BLAST have been developed to identify and rank possible homologous sequences. To estimate the significance of the homology, the ranking of alignment scores takes a background model for random sequences into account. Using this model we can estimate the probability to find two exactly matching subsequences by chance in two unrelated sequences. For two homologous sequences, the corresponding probability is much higher, which allows us to identify them. Here we focus on the distribution of lengths of exact sequence matches between protein-coding regions of pairs of evolutionarily distant genomes. We show that this distribution exhibits a power-law tail with an exponent [Formula: see text] Developing a simple model of sequence evolution by substitutions and segmental duplications, we show analytically and computationally that paralogous and orthologous gene pairs contribute differently to this distribution. Our model explains the differences observed in the comparison of coding and noncoding parts of genomes, thus providing a better understanding of statistical properties of genomic sequences and their evolution.

  2. A Statistical Word-Level Translation Model for Comparable Corpora

    Science.gov (United States)

    2000-06-01

    readily available resources such as corpora, thesauri, bilingual and multilingual lexicons and dictionaries. The acquisition of such resources has...could aid in Monolingual Information Retrieval (MIR) by methods of query expansion, and thesauri construction. To date, most of the existing...testing the limits of its performance. Future directions include testing the model with a monolingual comparable corpus, e.g. WSJ [42M] and either IACA/B

  3. Comparability of Mixed IC50 Data – A Statistical Analysis

    OpenAIRE

    Tuomo Kalliokoski; Christian Kramer; Anna Vulpetti; Peter Gedeck

    2013-01-01

    The biochemical half maximal inhibitory concentration (IC50) is the most commonly used metric for on-target activity in lead optimization. It is used to guide lead optimization, build large-scale chemogenomics analysis, off-target activity and toxicity models based on public data. However, the use of public biochemical IC50 data is problematic, because they are assay specific and comparable only under certain conditions. For large scale analysis it is not feasible to check each data entry man...

  4. An exercise in model validation: Comparing univariate statistics and Monte Carlo-based multivariate statistics

    Energy Technology Data Exchange (ETDEWEB)

    Weathers, J.B. [Shock, Noise, and Vibration Group, Northrop Grumman Shipbuilding, P.O. Box 149, Pascagoula, MS 39568 (United States)], E-mail: James.Weathers@ngc.com; Luck, R. [Department of Mechanical Engineering, Mississippi State University, 210 Carpenter Engineering Building, P.O. Box ME, Mississippi State, MS 39762-5925 (United States)], E-mail: Luck@me.msstate.edu; Weathers, J.W. [Structural Analysis Group, Northrop Grumman Shipbuilding, P.O. Box 149, Pascagoula, MS 39568 (United States)], E-mail: Jeffrey.Weathers@ngc.com

    2009-11-15

    The complexity of mathematical models used by practicing engineers is increasing due to the growing availability of sophisticated mathematical modeling tools and ever-improving computational power. For this reason, the need to define a well-structured process for validating these models against experimental results has become a pressing issue in the engineering community. This validation process is partially characterized by the uncertainties associated with the modeling effort as well as the experimental results. The net impact of the uncertainties on the validation effort is assessed through the 'noise level of the validation procedure', which can be defined as an estimate of the 95% confidence uncertainty bounds for the comparison error between actual experimental results and model-based predictions of the same quantities of interest. Although general descriptions associated with the construction of the noise level using multivariate statistics exists in the literature, a detailed procedure outlining how to account for the systematic and random uncertainties is not available. In this paper, the methodology used to derive the covariance matrix associated with the multivariate normal pdf based on random and systematic uncertainties is examined, and a procedure used to estimate this covariance matrix using Monte Carlo analysis is presented. The covariance matrices are then used to construct approximate 95% confidence constant probability contours associated with comparison error results for a practical example. In addition, the example is used to show the drawbacks of using a first-order sensitivity analysis when nonlinear local sensitivity coefficients exist. Finally, the example is used to show the connection between the noise level of the validation exercise calculated using multivariate and univariate statistics.

  5. Comparative Statistical Study of Some SAP UI Technologies

    Science.gov (United States)

    Berdie, Adela; Osaci, Mihaela; Dan Lemle, Ludovic

    2011-09-01

    The goal of this paper is to present a comparative study on some web UI (User Interface) technologies that involve the creation of web applications on the platform SAP Net Weaver AS 7.01 of the integrated SAP (System Application Products) system. The attention will be directed mainly to the ABAP (Advanced Business Application Programing) development environment and to the Web Dynpro (WD) technologies, Floor Plan Manager (FPM) and Web Client UI. Through this study, we make an assesment regarding the decision of choosing a technology for the realisation of a project which consists of a web application.

  6. The information value of early career productivity in mathematics: a ROC analysis of prediction errors in bibliometricly informed decision making.

    Science.gov (United States)

    Lindahl, Jonas; Danell, Rickard

    2016-01-01

    The aim of this study was to provide a framework to evaluate bibliometric indicators as decision support tools from a decision making perspective and to examine the information value of early career publication rate as a predictor of future productivity. We used ROC analysis to evaluate a bibliometric indicator as a tool for binary decision making. The dataset consisted of 451 early career researchers in the mathematical sub-field of number theory. We investigated the effect of three different definitions of top performance groups-top 10, top 25, and top 50 %; the consequences of using different thresholds in the prediction models; and the added prediction value of information on early career research collaboration and publications in prestige journals. We conclude that early career performance productivity has an information value in all tested decision scenarios, but future performance is more predictable if the definition of a high performance group is more exclusive. Estimated optimal decision thresholds using the Youden index indicated that the top 10 % decision scenario should use 7 articles, the top 25 % scenario should use 7 articles, and the top 50 % should use 5 articles to minimize prediction errors. A comparative analysis between the decision thresholds provided by the Youden index which take consequences into consideration and a method commonly used in evaluative bibliometrics which do not take consequences into consideration when determining decision thresholds, indicated that differences are trivial for the top 25 and the 50 % groups. However, a statistically significant difference between the methods was found for the top 10 % group. Information on early career collaboration and publication strategies did not add any prediction value to the bibliometric indicator publication rate in any of the models. The key contributions of this research is the focus on consequences in terms of prediction errors and the notion of transforming uncertainty

  7. Comparability of mixed IC₅₀ data - a statistical analysis.

    Science.gov (United States)

    Kalliokoski, Tuomo; Kramer, Christian; Vulpetti, Anna; Gedeck, Peter

    2013-01-01

    The biochemical half maximal inhibitory concentration (IC50) is the most commonly used metric for on-target activity in lead optimization. It is used to guide lead optimization, build large-scale chemogenomics analysis, off-target activity and toxicity models based on public data. However, the use of public biochemical IC50 data is problematic, because they are assay specific and comparable only under certain conditions. For large scale analysis it is not feasible to check each data entry manually and it is very tempting to mix all available IC50 values from public database even if assay information is not reported. As previously reported for Ki database analysis, we first analyzed the types of errors, the redundancy and the variability that can be found in ChEMBL IC50 database. For assessing the variability of IC50 data independently measured in two different labs at least ten IC50 data for identical protein-ligand systems against the same target were searched in ChEMBL. As a not sufficient number of cases of this type are available, the variability of IC50 data was assessed by comparing all pairs of independent IC50 measurements on identical protein-ligand systems. The standard deviation of IC50 data is only 25% larger than the standard deviation of Ki data, suggesting that mixing IC50 data from different assays, even not knowing assay conditions details, only adds a moderate amount of noise to the overall data. The standard deviation of public ChEMBL IC50 data, as expected, resulted greater than the standard deviation of in-house intra-laboratory/inter-day IC50 data. Augmenting mixed public IC50 data by public Ki data does not deteriorate the quality of the mixed IC50 data, if the Ki is corrected by an offset. For a broad dataset such as ChEMBL database a Ki- IC50 conversion factor of 2 was found to be the most reasonable.

  8. Nursing informatics competencies: bibliometric analysis.

    Science.gov (United States)

    Kokol, Peter; Blažun, Helena; Vošner, Janez; Saranto, Kaija

    2014-01-01

    Information and communication technology is developing rapidly and it is incorporated in many health care processes, but in spite of that fact we can still notice that nursing informatics competencies had received limited attention in basic nursing education curricula in Europe and especially in Eastern European countries. The purpose of the present paper is to present the results of a bibliometric analysis of the nursing informatics competencies scientific literature production. We applied the bibliometrics analysis to the corpus of 332 papers found in SCOPUS, related to nursing informatics competencies. The results showed that there is a positive trend in the number of published papers per year, indicating the increased research interest in nursing informatics competencies. Despite the fact that the first paper was published in Denmark, the most prolific country regarding the research in nursing informatics competencies is United States as are their institutions and authors.

  9. Bibliometrics: The best available information?

    Science.gov (United States)

    Klein, Waldo C; Bloom, Martin

    2005-01-01

    This commentary raises significant cautions related to inherent shortcomings in the use of bibliographic analytic technology, and in particular its use in substantive decision making around promotion and tenure. Questions are raised concerning the continued use of scholarly energy for bibliometric analysis of subtly different settings. The recommendation is offered that future efforts in bibliometrics must target methods to reduce methodological shortcomings. These include clarifying the metric used to count sole/multiple authorship, and to evaluate the"merit" of manuscripts as well as journals in which they appear. Finally, the fundamental meaning of the information produced in these analyses (i.e., the validity of the measure) must be clearly presented in order for it to be credibly used.

  10. Biblio-MetReS: A bibliometric network reconstruction application and server

    Directory of Open Access Journals (Sweden)

    Alves Rui

    2011-10-01

    Full Text Available Abstract Background Reconstruction of genes and/or protein networks from automated analysis of the literature is one of the current targets of text mining in biomedical research. Some user-friendly tools already perform this analysis on precompiled databases of abstracts of scientific papers. Other tools allow expert users to elaborate and analyze the full content of a corpus of scientific documents. However, to our knowledge, no user friendly tool that simultaneously analyzes the latest set of scientific documents available on line and reconstructs the set of genes referenced in those documents is available. Results This article presents such a tool, Biblio-MetReS, and compares its functioning and results to those of other user-friendly applications (iHOP, STRING that are widely used. Under similar conditions, Biblio-MetReS creates networks that are comparable to those of other user friendly tools. Furthermore, analysis of full text documents provides more complete reconstructions than those that result from using only the abstract of the document. Conclusions Literature-based automated network reconstruction is still far from providing complete reconstructions of molecular networks. However, its value as an auxiliary tool is high and it will increase as standards for reporting biological entities and relationships become more widely accepted and enforced. Biblio-MetReS is an application that can be downloaded from http://metres.udl.cat/. It provides an easy to use environment for researchers to reconstruct their networks of interest from an always up to date set of scientific documents.

  11. Statistical analysis of unlabeled point sets: comparing molecules in chemoinformatics.

    Science.gov (United States)

    Dryden, Ian L; Hirst, Jonathan D; Melville, James L

    2007-03-01

    We consider Bayesian methodology for comparing two or more unlabeled point sets. Application of the technique to a set of steroid molecules illustrates its potential utility involving the comparison of molecules in chemoinformatics and bioinformatics. We initially match a pair of molecules, where one molecule is regarded as random and the other fixed. A type of mixture model is proposed for the point set coordinates, and the parameters of the distribution are a labeling matrix (indicating which pairs of points match) and a concentration parameter. An important property of the likelihood is that it is invariant under rotations and translations of the data. Bayesian inference for the parameters is carried out using Markov chain Monte Carlo simulation, and it is demonstrated that the procedure works well on the steroid data. The posterior distribution is difficult to simulate from, due to multiple local modes, and we also use additional data (partial charges on atoms) to help with this task. An approximation is considered for speeding up the simulation algorithm, and the approximating fast algorithm leads to essentially identical inference to that under the exact method for our data. Extensions to multiple molecule alignment are also introduced, and an algorithm is described which also works well on the steroid data set. After all the steroid molecules have been matched, exploratory data analysis is carried out to examine which molecules are similar. Also, further Bayesian inference for the multiple alignment problem is considered.

  12. [New bibliometric indicators for the scientific literature: an evolving panorama].

    Science.gov (United States)

    La Torre, G; Sciarra, I; Chiappetta, M; Monteduro, A

    2017-01-01

    Bibliometrics is a science which evaluates the impact of the scientific work of a journal or of an author, using mathematical and statistical tools. Impact Factor (IF) is the first bibliometric parameter created, and after it many others have been progressively conceived in order to go beyond its limits. Currently bibliometric indexes are used for academic purposes, among them to evaluate the eligibility of a researcher to compete for the National Scientific Qualification, in order to access to competitive exams to become professor. Aim of this study is to identify the most relevant bibliometric indexes and to summarized their characteristics. A revision of bibliometric indexes as been conducted, starting from the classic ones and completing with the most recent ones. The two most used bibliometric indexes are the IF, which measures the scientific impact of a periodical and bases on Web of Science citation database, and the h-index, which measures the impact of the scientific work of a researcher, basing on Scopus database. Besides them other indexes have been created more recently, such as the SCImago Journal Rank Indicator (SJR), the Source Normalised Impact per Paper (SNIP) and the CiteScore index. They are all based on Scopus database and evaluate, in different ways, the citational impact of a periodic. The i10-index instead is provided from Google Scholar database and allows to evaluate the impact of the scientific production of a researcher. Recently two softwares have been introduced: the first one, Publish or Perish, allows to evaluate the scientific work of a researcher, through the assessment of many indexes; the second one, Altmetric, measure the use in the Web of the academic papers, instead of measuring citations, by means of alternative metrics respect to the traditional ones. Each analized index shows advantages but also criticalities. Therefore the combined use of more than one indexes, citational and not, should be preferred, in order to correctly

  13. Scaling Analysis of Author Level Bibliometric Indicators

    DEFF Research Database (Denmark)

    Wildgaard, Lorna; Larsen, Birger

    2014-01-01

    Despite of the concerns from the bibliometric community, evaluation of the individual through bibliometric indices is already performed as a form of ‘pseudo peer review’ in selection of candidates for tenure, in background checks of potential employees’ publicationand citation impact, and in appr...

  14. Methodological Advances in Bibliometric Mapping of Science

    NARCIS (Netherlands)

    N.J.P. van Eck (Nees Jan)

    2011-01-01

    textabstractBibliometric mapping of science is concerned with quantitative methods for visually representing scientific literature based on bibliographic data. Since the first pioneering efforts in the 1970s, a large number of methods and techniques for bibliometric mapping have been proposed and te

  15. Bibliometric Mapping of the Computational Intelligence Field

    NARCIS (Netherlands)

    N.J.P. van Eck (Nees Jan); L. Waltman (Ludo)

    2007-01-01

    textabstractIn this paper, a bibliometric study of the computational intelligence field is presented. Bibliometric maps showing the associations between the main concepts in the field are provided for the periods 1996–2000 and 2001–2005. Both the current structure of the field and the evolution of t

  16. Bibliometric Mapping of the Computational Intelligence Field

    NARCIS (Netherlands)

    N.J.P. van Eck (Nees Jan); L. Waltman (Ludo)

    2008-01-01

    textabstractIn this paper, a bibliometric study of the computational intelligence field is presented. Bibliometric maps showing the associations between the main concepts in the field are provided for the periods 1996–2000 and 2001–2005. Both the current structure of the field and the evolution of t

  17. The Bibliometric Properties of Article Readership Information

    CERN Document Server

    Kurtz, Michael J; Accomazzi, Alberto; Grant, Carolyn S; Demleitner, Markus; Murray, Stephen S; Martimbeau, Nathalie; Elwell, Barbara

    2009-01-01

    The NASA Astrophysics Data System (ADS), along with astronomy's journals and data centers (a collaboration dubbed URANIA), has developed a distributed on-line digital library which has become the dominant means by which astronomers search, access and read their technical literature. Digital libraries such as the NASA Astrophysics Data System permit the easy accumulation of a new type of bibliometric measure, the number of electronic accesses (``reads'') of individual articles. We explore various aspects of this new measure. We examine the obsolescence function as measured by actual reads, and show that it can be well fit by the sum of four exponentials with very different time constants. We compare the obsolescence function as measured by readership with the obsolescence function as measured by citations. We find that the citation function is proportional to the sum of two of the components of the readership function. This proves that the normative theory of citation is true in the mean. We further examine in...

  18. 关于《科学学研究》的文献计量学研究%Bibliometric Researches on Studies of Science of Science

    Institute of Scientific and Technical Information of China (English)

    姜春林

    2001-01-01

    A statistical analysis of the 522 articles issued in Studies of Science of Science from 1992 to 1999 with the bibliometrical method is made so as to reveal some of its specific properties in carrying articles and its current situation.

  19. Statistics

    CERN Document Server

    Hayslett, H T

    1991-01-01

    Statistics covers the basic principles of Statistics. The book starts by tackling the importance and the two kinds of statistics; the presentation of sample data; the definition, illustration and explanation of several measures of location; and the measures of variation. The text then discusses elementary probability, the normal distribution and the normal approximation to the binomial. Testing of statistical hypotheses and tests of hypotheses about the theoretical proportion of successes in a binomial population and about the theoretical mean of a normal population are explained. The text the

  20. [Bibliometric indexes of the editions, publishing the articles on the problems of morphology, and some bibliometric parameters of the authors of morphological publications].

    Science.gov (United States)

    Shevliuk, N N

    2013-01-01

    The article presents a comparative assessment of some bibliometric parameters of national journals, publishing the articles on the problems of morphological scientific disciplines, and concise analysis of the publication activity of morphologists. The data are given on the application of bibliometric indexes for the evaluation of the scientific contribution of national researchers to the field of morphology. The information contained in the national database-- Russian Index of Scientific Citation, and that collected by means of selected overview of the national and foreign medical and biological journals, publishing the articles on various problems of morphological sciences during the last 20 years, served as the basis for the analysis. It is noted that the authors should consider the bibliometric indexes of the journals to which they submit their articles.

  1. Automating bibliometric analyses using Taverna scientific workflows : A tutorial on integrating Web Services

    NARCIS (Netherlands)

    Guler, A.T.; Waaijer, C.J.F.; Mohammed, Y.; Palmblad, M.

    2016-01-01

    Quantitative analysis of the scientific literature is a frequent task in bibliometrics. Several large online resources collect and disseminate bibliographic information, paving the way for broad analyses and statistics. The Europe PubMed Central (PMC) and its Web Services is one of these resources,

  2. An outline of the bibliometric indicator used for performancebased funding of research institutions in Norway

    DEFF Research Database (Denmark)

    Schneider, Jesper Wiborg

    2009-01-01

    This article outlines and discusses the bibliometric indicator used for performance-based funding of research institutions in Norway. It is argued that the indicator is novel and innovative as compared to the indicators used in other funding models. It compares institutions based on all their pub......This article outlines and discusses the bibliometric indicator used for performance-based funding of research institutions in Norway. It is argued that the indicator is novel and innovative as compared to the indicators used in other funding models. It compares institutions based on all...

  3. Bibliometric Study of Infociencia Journal.

    Directory of Open Access Journals (Sweden)

    Yaima Martínez Viciedo

    2012-12-01

    Full Text Available Open Access of information has had great boom nowadays, meanwhile, some authors don’t want to disseminate their knowledge, making difficult the process mentioned before. Some Databases have being created to answer to this problem. Repositories and scientific magazines are other possibilities that the authors have to diffuse their knowledge. In this work it is made a bibliometric study of the electronic journal INFOCIENCIA during five years in which productivity of articles, the origin of bibliography, quantity of articles by themes and if the bibliography was update or not, were determined, for doing it an analysis of bibliometric character was made. It consisted on summarizing, reviewing, identifying and systematizing the obtained information by means of investigations. The obtained results were: The productivity of article has decreased during these five years, being 2008 the year of less production. The number of biographies varies in the evaluated period. The themes with more quantity of articles were: health, agriculture and education. It was proved that persons consulted more bibliography since 5 to 10 years, followed by the last 5 years.

  4. Statistics

    Science.gov (United States)

    Links to sources of cancer-related statistics, including the Surveillance, Epidemiology and End Results (SEER) Program, SEER-Medicare datasets, cancer survivor prevalence data, and the Cancer Trends Progress Report.

  5. On the Research Contribution of XBRL Literature - A Bibliometrics Analysis

    Directory of Open Access Journals (Sweden)

    Hakan ERKUS

    2014-05-01

    Full Text Available The purpose of this study is to investigate the research attributes and contribution of extensible Business Reporting Language (XBRL literature in the past decade by employing bibliometrics analysis. Publications on XBRL topical area are used to complete two sections of analysis in this study. The first section examines the research intellectual network of XBRL by applying citation frequency count and cocitation analysis. The second section examines the content of XBRL publications by taxonomizing articles along multiple dimensions and providing descriptive statistics on research attributes. This study aims at contributing to accounting literature by shedding light on the recent research structure on XBRL and potential future directions.

  6. Bibliometrics and research evaluation uses and abuses

    CERN Document Server

    Gingras, Yves

    2016-01-01

    The research evaluation market is booming. "Ranking," "metrics," "h-index," and "impact factors" are reigning buzzwords. Government and research administrators want to evaluate everything -- teachers, professors, training programs, universities -- using quantitative indicators. Among the tools used to measure "research excellence," bibliometrics -- aggregate data on publications and citations -- has become dominant. Bibliometrics is hailed as an "objective" measure of research quality, a quantitative measure more useful than "subjective" and intuitive evaluation methods such as peer review that have been used since scientific papers were first published in the seventeenth century. In this book, Yves Gingras offers a spirited argument against an unquestioning reliance on bibliometrics as an indicator of research quality. Gingras shows that bibliometric rankings have no real scientific validity, rarely measuring what they pretend to. Although the study of publication and citation patterns, at the proper scales...

  7. Tagging French comparing a statistical and a constraint-based method

    CERN Document Server

    Chanod, J P; Chanod, Jean-Pierre; Tapanainen, Pasi

    1995-01-01

    In this paper we compare two competing approaches to part-of-speech tagging, statistical and constraint-based disambiguation, using French as our test language. We imposed a time limit on our experiment: the amount of time spent on the design of our constraint system was about the same as the time we used to train and test the easy-to-implement statistical model. We describe the two systems and compare the results. The accuracy of the statistical method is reasonably good, comparable to taggers for English. But the constraint-based tagger seems to be superior even with the limited time we allowed ourselves for rule development.

  8. Statistics Education Research in Malaysia and the Philippines: A Comparative Analysis

    Science.gov (United States)

    Reston, Enriqueta; Krishnan, Saras; Idris, Noraini

    2014-01-01

    This paper presents a comparative analysis of statistics education research in Malaysia and the Philippines by modes of dissemination, research areas, and trends. An electronic search for published research papers in the area of statistics education from 2000-2012 yielded 20 for Malaysia and 19 for the Philippines. Analysis of these papers showed…

  9. A Comparative Analysis of Multivariate Statistical Detection Methods Applied to Syndromic Surveillance

    Science.gov (United States)

    2007-06-01

    the observed system. Our research involved a comparative analysis of two multivariate statistical methods, the multivariate CUSUM (MCUSUM) and the...outbreaks. We found that, similar to results for the univariate CUSUM and EWMA, the directionally-sensitive MCUSUM and MEWMA perform very similarly. 14...SUBJECT TERMS Biosurveillance, Multivariate CUSUM , Multivariate EWMA, Statistical Process Control, Syndromic Surveillance 15. NUMBER OF PAGES

  10. Statistics Education Research in Malaysia and the Philippines: A Comparative Analysis

    Science.gov (United States)

    Reston, Enriqueta; Krishnan, Saras; Idris, Noraini

    2014-01-01

    This paper presents a comparative analysis of statistics education research in Malaysia and the Philippines by modes of dissemination, research areas, and trends. An electronic search for published research papers in the area of statistics education from 2000-2012 yielded 20 for Malaysia and 19 for the Philippines. Analysis of these papers showed…

  11. Reactive tendencies of bibliometric indicators: Trends in the alphabetization of authorship in economics and information science

    DEFF Research Database (Denmark)

    Faber Frandsen, Tove; Nicolaisen, Jeppe

    The paper adds a category to the list of possible negative steering effects of bibliometric indicators with a category for changes in credit assignment. The results of a longitudinal study of credit assignment practices in the fields of economics and information science are presented. The practice...... of alphabetization of authorship is demonstrated to vary significantly between the two fields. A slight increase is demonstrated to have taken place in economics during the last 30 years (1978-2007). A substantial decrease is demonstrated to have taken place in information science during the same period. A possible...... explanation for the demonstrated difference could be that information scientists have been much more aware of the bibliometric consequences of being first author compared to their colleagues in comparable fields (e.g., economics). This and other possible reactive tendencies of bibliometric indicators...

  12. The bibliometrics of atmospheric environment

    Science.gov (United States)

    Brimblecombe, Peter; Grossi, Carlota M.

    Bibliometric analysis is an important tool in the management of a journal. SCOPUS output is used to assess the increase in the quantity of material in Atmospheric Environment and stylistic changes in the way authors choose words and punctuation in titles and assemble their reference lists. Citation analysis is used to consider the impact factor of the journal, but perhaps more importantly the way in which it reflects the importance authors give to papers published in Atmospheric Environment. The impact factor of Atmospheric Environment (2.549 for 2007) from the Journal Citation Reports suggests it performs well within the atmospheric sciences, but it conceals the long term value authors place on papers appearing in the journal. Reference lists show that a fifth come through citing papers more than a decade old.

  13. The evolution of dental journals from 2003 to 2012: a bibliometric analysis.

    Directory of Open Access Journals (Sweden)

    Yasas Shri Nalaka Jayaratne

    Full Text Available Bibliometrics are a set of methods, which can be used to analyze academic literature quantitatively and its changes over time. The objectives of this study were 1 to evaluate trends related to academic performance of dental journals from 2003 to 2012 using bibliometric indices, and 2 monitor the changes of the five dental journals with the highest and lowest impact factor (IF published in 2003. Data for the subject category "Dentistry, Oral Surgery & Medicine" was retrieved from the Journal Citation Reports (JCR published from 2003 to 2012. Linear regressions analysis was used to determine statistical trends over the years with each bibliometric indicator as the dependent variable and the JCR year as the predictor variable. Statistically significant rise in the total number of dental journals, the number of all articles with the steepest rise observed for research articles, the number of citations and the aggregate IF was observed from 2003 to 2012. The analysis of the five top and five bottom-tire dental journals revealed a rise in IF however, with a wide variation in relation to the magnitude of this rise. Although the IF of the top five journals remained relatively constant, the percentile ranks of the four lowest ranking journals in 2003 increased significantly with the sharpest rise being noted for the British Journal of Oral & Maxillofacial Surgery. This study revealed significant growth of dental literature in absolute terms, as well as upward trends for most of the citation-based bibliometric indices from 2003 to 2012.

  14. The Evolution of Dental Journals from 2003 to 2012: A Bibliometric Analysis

    Science.gov (United States)

    Jayaratne, Yasas Shri Nalaka; Zwahlen, Roger Arthur

    2015-01-01

    Bibliometrics are a set of methods, which can be used to analyze academic literature quantitatively and its changes over time. The objectives of this study were 1) to evaluate trends related to academic performance of dental journals from 2003 to 2012 using bibliometric indices, and 2) monitor the changes of the five dental journals with the highest and lowest impact factor (IF) published in 2003. Data for the subject category "Dentistry, Oral Surgery & Medicine" was retrieved from the Journal Citation Reports (JCR) published from 2003 to 2012. Linear regressions analysis was used to determine statistical trends over the years with each bibliometric indicator as the dependent variable and the JCR year as the predictor variable. Statistically significant rise in the total number of dental journals, the number of all articles with the steepest rise observed for research articles, the number of citations and the aggregate IF was observed from 2003 to 2012. The analysis of the five top and five bottom-tire dental journals revealed a rise in IF however, with a wide variation in relation to the magnitude of this rise. Although the IF of the top five journals remained relatively constant, the percentile ranks of the four lowest ranking journals in 2003 increased significantly with the sharpest rise being noted for the British Journal of Oral & Maxillofacial Surgery. This study revealed significant growth of dental literature in absolute terms, as well as upward trends for most of the citation-based bibliometric indices from 2003 to 2012. PMID:25781486

  15. The evolution of dental journals from 2003 to 2012: a bibliometric analysis.

    Science.gov (United States)

    Jayaratne, Yasas Shri Nalaka; Zwahlen, Roger Arthur

    2015-01-01

    Bibliometrics are a set of methods, which can be used to analyze academic literature quantitatively and its changes over time. The objectives of this study were 1) to evaluate trends related to academic performance of dental journals from 2003 to 2012 using bibliometric indices, and 2) monitor the changes of the five dental journals with the highest and lowest impact factor (IF) published in 2003. Data for the subject category "Dentistry, Oral Surgery & Medicine" was retrieved from the Journal Citation Reports (JCR) published from 2003 to 2012. Linear regressions analysis was used to determine statistical trends over the years with each bibliometric indicator as the dependent variable and the JCR year as the predictor variable. Statistically significant rise in the total number of dental journals, the number of all articles with the steepest rise observed for research articles, the number of citations and the aggregate IF was observed from 2003 to 2012. The analysis of the five top and five bottom-tire dental journals revealed a rise in IF however, with a wide variation in relation to the magnitude of this rise. Although the IF of the top five journals remained relatively constant, the percentile ranks of the four lowest ranking journals in 2003 increased significantly with the sharpest rise being noted for the British Journal of Oral & Maxillofacial Surgery. This study revealed significant growth of dental literature in absolute terms, as well as upward trends for most of the citation-based bibliometric indices from 2003 to 2012.

  16. Climate Change Research in View of Bibliometrics.

    Science.gov (United States)

    Haunschild, Robin; Bornmann, Lutz; Marx, Werner

    2016-01-01

    This bibliometric study of a large publication set dealing with research on climate change aims at mapping the relevant literature from a bibliometric perspective and presents a multitude of quantitative data: (1) The growth of the overall publication output as well as (2) of some major subfields, (3) the contributing journals and countries as well as their citation impact, and (4) a title word analysis aiming to illustrate the time evolution and relative importance of specific research topics. The study is based on 222,060 papers (articles and reviews only) published between 1980 and 2014. The total number of papers shows a strong increase with a doubling every 5-6 years. Continental biomass related research is the major subfield, closely followed by climate modeling. Research dealing with adaptation, mitigation, risks, and vulnerability of global warming is comparatively small, but their share of papers increased exponentially since 2005. Research on vulnerability and on adaptation published the largest proportion of very important papers (in terms of citation impact). Climate change research has become an issue also for disciplines beyond the natural sciences. The categories Engineering and Social Sciences show the strongest field-specific relative increase. The Journal of Geophysical Research, the Journal of Climate, the Geophysical Research Letters, and Climatic Change appear at the top positions in terms of the total number of papers published. Research on climate change is quantitatively dominated by the USA, followed by the UK, Germany, and Canada. The citation-based indicators exhibit consistently that the UK has produced the largest proportion of high impact papers compared to the other countries (having published more than 10,000 papers). Also, Switzerland, Denmark and also The Netherlands (with a publication output between around 3,000 and 6,000 papers) perform top-the impact of their contributions is on a high level. The title word analysis shows that

  17. Software survey: VOSviewer, a computer program for bibliometric mapping

    NARCIS (Netherlands)

    N.J.P. van Eck (Nees Jan); L. Waltman (Ludo)

    2010-01-01

    textabstractWe present VOSviewer, a freely available computer program that we have developed for constructing and viewing bibliometric maps. Unlike most computer programs that are used for bibliometric mapping, VOSviewer pays special attention to the graphical representation of bibliometric maps. Th

  18. Bibliometric-Enhanced Information Retrieval. Editorial for the workshop.

    NARCIS (Netherlands)

    Mayr, Philipp; Schaer, Philipp; Scharnhorst, Andrea; Mutschke, Peter; de Rijke, Maarten; Kenter, Tom; de Vries, Arjen P.; Zhai, ChengXiang; de Jong, Franciska; Radinsky, Kira; Hofmann, Katja

    2014-01-01

    This first "Bibliometric-enhanced Information Retrieval" (BIR 2014) workshop aims to engage with the IR community about possible links to bibliometrics and scholarly communication. Bibliometric techniques are not yet widely used to enhance retrieval processes in digital libraries, although they offe

  19. Bibliometric Analysis of Current Web Survey Research in China

    Institute of Scientific and Technical Information of China (English)

    ZHANG Qian; SHAO Peiji; FANG Jiaming

    2008-01-01

    In recent years, with the advancement of information technology and its application in survey activities, web surveys have not only greatly developed, but have also encountered many problems in China. An analysis of domestic research is important for better understanding of web surveys, to guide further research and application. This paper gives a bibliometric analysis of 120 domestic articles on web surveys from 1998 to 2006, on publication growth, author and organization distribution, journal distribution, and research subjects. Research on web surveys in China should make progress comparable with research abroad in comparative studies, specific studies, and technical application studies.

  20. Global methaemoglobinaemia research output (1940-2013): a bibliometric analysis.

    Science.gov (United States)

    Zyoud, Sa'ed H; Al-Jabi, Samah W; Sweileh, Waleed M; Al-Khalil, Suleiman; Alqub, Malik; Awang, Rahmat

    2015-01-01

    Bibliometric studies, which involve the use of statistical methods, are increasingly being used for research assessment. A bibliometric analysis was conducted to evaluate the publication pattern of methaemoglobinaemia research output at the global level based on the Scopus database. We analysed selected documents with "methemoglobinemia", or "methaemoglobinaemia" as a part of the title and reported the following parameters: trends of publication output, country of publication, journal pattern, collaborative measures, citations pattern, and institute productivity. A total of 1770 articles were published worldwide. The time trend for the number of articles showed an increase after 2000. The highest number of articles related to methaemoglobinaemia was from the USA (24.8 %), followed distantly by the UK (4.5 %), India (3.7 %), and France (3.7 %). No data related to methaemoglobinaemia were published from 152 countries. The total number of citations at the date of data collection was 10,080, with an average of 5.7 citations per document. The USA and UK had the highest h-index of 31 and 14, respectively, and six countries had an h-index of 9-14. It is notable that Canada was ranked eighth in the number of publications but fourth in h-index and India was ranked third in the number of publications but eighth in h-index. Furthermore, Canada produced the most internationally collaborated papers out of the total number of publications for each country (16.1 %), followed by the UK (13.9 %). This bibliometric analysis provides data contributing to a better understanding of the methaemoglobinaemia research field. The number of publications on methaemoglobinaemia increased significantly after 2000. The USA was the most productive country as measured by total publications. The USA and UK achieved the highest h-index in the field of methaemoglobinaemia research, signifying a higher quality of research than other countries.

  1. Suicide Rates in Greece: Comparing Mortality Data with Police Reporting Statistics and Investigating Recent Trends

    Directory of Open Access Journals (Sweden)

    Alexandra Tragaki

    2017-04-01

    Full Text Available This paper analyzes recent suicide trends in Greece. It relies on two separate databases, vital statistics and police records, the latter never having been explored before. Those datasets present a different picture about the suicide rates and trends, confirming the crucial importance of data reliability and consistency in time trend analysis. Frequencies and ratios were calculated and compared using paired sample t-tests. Overtime trend changes were detected applying segment regression analysis on both data collections. Our findings suggest that there are important differences between vital and police statistics on suicides. At national level, over the period 1990–2013, vital statistics reported an average of 7 percent more suicides, annually. Differences were more pronounced among women and younger ages. Both datasets confirm a change in total suicide trends during recent recession, but police data analysis supports that increases are less impressive than vital statistics claim.

  2. Computer science research in Malaysia: a bibliometric analysis

    OpenAIRE

    Bakri, A; Willett, P.

    2011-01-01

    Purpose – The purpose of this paper is to analyse the publications of, and the citations to, the current staff of 19 departments of computer science in Malaysian universities, and to compare these bibliometric data with expert peer reviews of Malaysian research performance. \\ud \\ud Design/methodology/approach – This paper searches citation of the Scopus and Web of Science databases. \\ud \\ud Findings – Both publication and citation rates are low, although this is at least in part due to some M...

  3. Bibliometric performance analysis of publications from Danish researchers linked to FP6 and FP7

    DEFF Research Database (Denmark)

    Schneider, Jesper Wiborg; Ryan, Thomas Kjeldager

    2015-01-01

    citations belonging to scientific publications with at least one Danish author. This is done using data from the international citation database Web of Science (WoS). These results are compared to the results of the bibliometric analyses from the previous evaluations of the Danish National Research...

  4. Comment on a Wilcox Test Statistic for Comparing Means When Variances Are Unequal.

    Science.gov (United States)

    Hsiung, Tung-Hsing; And Others

    1994-01-01

    The alternative proposed by Wilcox (1989) to the James second-order statistic for comparing population means when variances are heterogeneous can sometimes be invalid. The degree to which the procedure is invalid depends on differences in sample size, the expected values of the observations, and population variances. (SLD)

  5. Harmonization by simulation: a contribution to comparable international migration statistics in Europe

    NARCIS (Netherlands)

    Nowok, B.

    2010-01-01

    In today's globalized world, there is increasing demand for reliable and comparable statistics on international migration. This book contributes to a more profound understanding of the effect of definitional variations on the figures that are reported.The framework developed here for the harmonizati

  6. Bibliometric indexes, databases and impact factors in cardiology

    Science.gov (United States)

    Bienert, Igor R C; de Oliveira, Rogério Carvalho; de Andrade, Pedro Beraldo; Caramori, Carlos Antonio

    2015-01-01

    Bibliometry is a quantitative statistical technique to measure levels of production and dissemination of knowledge, as well as a useful tool to track the development of an scientific area. The valuation of production required for recognition of researchers and magazines is accomplished through tools called bibliometricindexes, divided into quality indicators and scientific impact. Initially developed for monographs of statistical measures especially in libraries, today bibliometrics is mainly used to evaluate productivity of authors and citation repercussion. However, these tools have limitations and sometimes provoke controversies about indiscriminate application, leading to the development of newer indexes. It is important to know the most common search indexes and use it properly even acknowledging its limitations as it has a direct impact in their daily practice, reputation and funds achievement. PMID:26107458

  7. Bibliometric indexes, databases and impact factors in cardiology

    Directory of Open Access Journals (Sweden)

    Igor R C Bienert

    2015-04-01

    Full Text Available AbstractBibliometry is a quantitative statistical technique to measure levels of production and dissemination of knowledge, as well as a useful tool to track the development of an scientific area. The valuation of production required for recognition of researchers and magazines is accomplished through tools called bibliometricindexes, divided into quality indicators and scientific impact. Initially developed for monographs of statistical measures especially in libraries, today bibliometrics is mainly used to evaluate productivity of authors and citation repercussion. However, these tools have limitations and sometimes provoke controversies about indiscriminate application, leading to the development of newer indexes. It is important to know the most common search indexes and use it properly even acknowledging its limitations as it has a direct impact in their daily practice, reputation and funds achievement.

  8. Bibliometric Assessment of the Global Scientific Production of Nitazoxanide.

    Science.gov (United States)

    Rodriguez-Morales, Alfonso J; Martinez-Pulgarin, Dayron F; Muñoz-Urbano, Marcela; Gómez-Suta, Daniela; Sánchez-Duque, Jorge A; Machado-Alba, Jorge E

    2017-05-01

    Nitazoxanide is a member of a new class of drug, thiazolides, and it was discovered in 1984 with antimicrobial activity effect against anaerobic bacteria, Hepatitis virus, protozoa, and helminths. A bibliometric study on four databases (1984-2016) - Medline, Scopus, LILACS, and SciELO - characterizing the global scientific production of nitazoxanide. We determined the quantity, quality (number of citations), and types of studies developed by each country, characterizing them by years, international cooperation, development, place of publication, authors (with its H-index), and groups with higher impact. There were 512 articles in Medline - the higher scientific production is from the USA (19.71%), Switzerland (7.51%), and Mexico (7.27%). There were 1,440 articles in Scopus - from the USA (8.98%), Mexico (2.13%), and India (1.65%). There were 405 articles in LILACS - from Mexico (4.69%), the USA (4.2%), and Peru (2.47%). There were 47 articles in SciELO - from Brazil (34.04%), Venezuela (21.28%), and Colombia (14.89%). The H-index of nitazoxanide is 75 - the USA (26), Egypt (12), and Canada (10) were the countries contributing more with that. Nitazoxanide research has been highly important. Nevertheless, it is relatively limited when compared with other drugs. Its research has been led by the USA, as revealed in this bibliometric assessment. Although some developing countries, where it is used especially for protozoa and helminths, probably have its influence, and this explains the fact that Mexico and India, among others, are the top countries in the scientific production of this anti-infective agent. This bibliometric study evidenced a relatively low number of publications, however, it has been increased in recent years.

  9. Severe sepsis: are PROWESS and PROWESS-SHOCK trials comparable? A clinical and statistical heterogeneity analysis.

    Science.gov (United States)

    Kalil, Andre C; Florescu, Diana F

    2013-07-04

    Despite the same manufacturer, the same drotrecogin alfa activated dose, and the same placebo-controlled design, the negative result from the PROWESS-SHOCK trial contradicted the survival benefit observed in the PROWESS trial. We hypothesize that the different results were due to factors other than the experimental therapy and performed an analysis of the clinical heterogeneity (differences related to the trials' clinical aspects) and the statistical heterogeneity (differences related to the trials' statistical aspects) between these trials. Baseline characteristics and co-interventions were analyzed by chi-square testing and mortality was analyzed by random-effects modeling and I2. Our findings show that clinical variables presented significant heterogeneity, and that up to 90% of the mortality differences between both trials were not due to chance. These results demonstrate that PROWESS and PROWESS-SHOCK are not comparable trials due to the highly significant clinical and statistical heterogeneity. We propose a new and pragmatic solution.

  10. An investigation of the statistical power of neutrality tests based on comparative and population genetic data

    DEFF Research Database (Denmark)

    Zhai, Weiwei; Nielsen, Rasmus; Slatkin, Montgomery

    2009-01-01

    In this report, we investigate the statistical power of several tests of selective neutrality based on patterns of genetic diversity within and between species. The goal is to compare tests based solely on population genetic data with tests using comparative data or a combination of comparative...... selection. The Hudson-Kreitman-Aguadé test is the most powerful test for detecting positive selection among the population genetic tests investigated, whereas McDonald-Kreitman test typically has more power to detect negative selection. We discuss our findings in the light of the discordant results obtained...

  11. Comparing estimates of climate change impacts from process-based and statistical crop models

    Science.gov (United States)

    Lobell, David B.; Asseng, Senthold

    2017-01-01

    The potential impacts of climate change on crop productivity are of widespread interest to those concerned with addressing climate change and improving global food security. Two common approaches to assess these impacts are process-based simulation models, which attempt to represent key dynamic processes affecting crop yields, and statistical models, which estimate functional relationships between historical observations of weather and yields. Examples of both approaches are increasingly found in the scientific literature, although often published in different disciplinary journals. Here we compare published sensitivities to changes in temperature, precipitation, carbon dioxide (CO2), and ozone from each approach for the subset of crops, locations, and climate scenarios for which both have been applied. Despite a common perception that statistical models are more pessimistic, we find no systematic differences between the predicted sensitivities to warming from process-based and statistical models up to +2 °C, with limited evidence at higher levels of warming. For precipitation, there are many reasons why estimates could be expected to differ, but few estimates exist to develop robust comparisons, and precipitation changes are rarely the dominant factor for predicting impacts given the prominent role of temperature, CO2, and ozone changes. A common difference between process-based and statistical studies is that the former tend to include the effects of CO2 increases that accompany warming, whereas statistical models typically do not. Major needs moving forward include incorporating CO2 effects into statistical studies, improving both approaches’ treatment of ozone, and increasing the use of both methods within the same study. At the same time, those who fund or use crop model projections should understand that in the short-term, both approaches when done well are likely to provide similar estimates of warming impacts, with statistical models generally

  12. Bibliometrics and academic staff assessment in Polish university libraries - current trends

    Directory of Open Access Journals (Sweden)

    Danuta Ryś

    2016-12-01

    Full Text Available Academic staff assessment in Poland is, to a large extent, based on bibliographic indicators, such as the number of scientific publications produced, the Ministry of Science and Higher Education score pertaining to the journal rank and the publication type, as well as the number of citations and derivatives. Relevant data is retrieved from bibliographic databases developed by libraries, international citation indexes available for Polish scientific institutions under a national licence, and from open-access international and Polish sources, which are briefly presented in the article. The workload entailed, and in consequence, the results of this citation search vary depending on the search method applied. For this reason university staff members and university authorities often seek assistance for this from the university library staff. This in return provides an opportunity for libraries to increase their role within the academic community.In order to investigate the matter further, the authors conducted a survey among the largest academic libraries in Poland. The findings confirm that bibliometric processes (namely, the registration and the formal acceptance of university staff scientific publications, and compilation of citation reports have become a vital part of modern library work. Bibliographies of university staff publications developed by libraries include various bibliometric indicators (those most frequently used being identified in the article, and have become an important source of statistical and bibliometric information. The survey results highlight the most frequently used bibliometric sources and methods. Examples of bibliographic databases created by the libraries and bibliometric indicators used within these databases are also presented.

  13. A bibliometric analysis of U.S.-based research on the Behavioral Risk Factor Surveillance System.

    Science.gov (United States)

    Khalil, George M; Gotway Crawford, Carol A

    2015-01-01

    Since Alan Pritchard defined bibliometrics as "the application of statistical methods to media of communication" in 1969, bibliometric analyses have become widespread. To date, however, bibliometrics has not been used to analyze publications related to the U.S. Behavioral Risk Factor Surveillance System (BRFSS). To determine the most frequently cited BRFSS-related topical areas, institutions, and journals. A search of the Web of Knowledge database in 2013 identified U.S.-published studies related to BRFSS, from its start in 1984 through 2012. Search terms were BRFSS, Behavioral Risk Factor Surveillance System, or Behavioral Risk Survey. The resulting 1,387 articles were analyzed descriptively and produced data for VOSviewer, a computer program that plotted a relevance distance-based map and clustered keywords from text in titles and abstracts. Topics, journals, and publishing institutions ranged widely. Most research was clustered by content area, such as cancer screening, access to care, heart health, and quality of life. The American Journal of Preventive Medicine and American Journal of Public Health published the most BRFSS-related papers (95 and 70, respectively). Bibliometrics can help identify the most frequently published BRFSS-related topics, publishing journals, and publishing institutions. BRFSS data are widely used, particularly by CDC and academic institutions such as the University of Washington and other universities hosting top-ranked schools of public health. Bibliometric analysis and mapping provides an innovative way of quantifying and visualizing the plethora of research conducted using BRFSS data and summarizing the contribution of this surveillance system to public health. Copyright © 2015 American Journal of Preventive Medicine. All rights reserved.

  14. Japanese-Style Management: A Bibliometric Study.

    Science.gov (United States)

    Noguchi, Sachie

    1988-01-01

    Reports results of a bibliometric study of the literature on Japanese-style management published in western languages from 1971-84 in order to: (1) determine Japanese contributions to the literature; (2) determine whether there are nuclear journals for the subject; and (3) investigate how the flow of information from Japan to overseas countries…

  15. Bibliometric mapping of computer and information ethics

    NARCIS (Netherlands)

    Heersmink, R.; Van den Hoven, J.; Van Eck, N.J.; Van den Berg, J.

    2011-01-01

    This paper presents the first bibliometric mapping analysis of the field of computer and information ethics (C&IE). It provides a map of the relations between 400 key terms in the field. This term map can be used to get an overview of concepts and topics in the field and to identify relations betwee

  16. Bibliometrics as weapons of mass citation.

    Science.gov (United States)

    Molinié, Antoinette; Bodenhausen, Geoffrey

    2010-01-01

    The allocation of resources for research is increasingly based on so-called 'bibliometrics'. Scientists are now deemed to be successful on the sole condition that their work be abundantly cited. This world-wide trend appears to enjoy support not only by granting agencies (whose task is obviously simplified by extensive recourse to bibliometrics), but also by the scientists themselves (who seem to enjoy their status of celebrities). This trend appears to be fraught with dangers, particularly in the area of social sciences, where bibliometrics are less developed, and where monographs (which are not taken into account in citation indexes) are often more important than articles published in journals. We argue in favour of a return to the values of 'real science', in analogy to the much-promised return to a 'real economy'. While economists may strive towards a more objective evaluation of the prospects of a company, a market, or an industrial sector, we scientists can only base our appraisal on a responsible practice of peer review. Since we fear that decision-takers of granting agencies such as the FNRS, CTI, EPFL, ETHZ, ANR, CNRS, NIH, NSF, DOE, etc. will be too busy to read our humble paper in Chimia, we appeal to scientists of all countries and disciplines to unite against the tyranny of bibliometrics.

  17. Bibliometrics: Help or Hoax for Quality?

    Science.gov (United States)

    Galetto, F.

    2014-01-01

    Higher Education Institutions should provide students good teaching with good professors who have good knowledge of the matter they are teaching. Unfortunately, many times, the opposite happens: career leaps depend on "bibliometric indexes" (Impact Points, "h"-index, "s"-index, "RG"-index,…

  18. [Definition and use of bibliometrics in research].

    Science.gov (United States)

    Sillet, Arnauld

    2013-12-01

    Bibliometrics is a tool used to achieve quantitative research assessment exercises of academic output, teams or even individuals in the field of scientific research. It is also important to know the basics of this method such as the impact factor, the h-index and how journals are evaluated.

  19. Bibliometric trend analyses of plastic surgery research

    NARCIS (Netherlands)

    Loonen, M.P.J.

    2007-01-01

    The present thesis was designed to evaluate the qualitative and quantitative aspects of plastic surgery research by means of a bibliometric citation analysis of plastic surgical presentations and publications. Citations to such published work provides an indication of the impact and the relevance of

  20. Bibliometric trend analyses of plastic surgery research

    NARCIS (Netherlands)

    Loonen, M.P.J.

    2007-01-01

    The present thesis was designed to evaluate the qualitative and quantitative aspects of plastic surgery research by means of a bibliometric citation analysis of plastic surgical presentations and publications. Citations to such published work provides an indication of the impact and the relevance of

  1. Statistical Methods for Comparative Phenomics Using High-Throughput Phenotype Microarrays*

    OpenAIRE

    Sturino, Joseph; Zorych, Ivan; Mallick, Bani; Pokusaeva, Karina; Chang, Ying-Ying; Carroll, Raymond J.; Bliznuyk, Nikolay

    2010-01-01

    We propose statistical methods for comparing phenomics data generated by the Biolog Phenotype Microarray (PM) platform for high-throughput phenotyping. Instead of the routinely used visual inspection of data with no sound inferential basis, we develop two approaches. The first approach is based on quantifying the distance between mean or median curves from two treatments and then applying a permutation test; we also consider a permutation test applied to areas under mean curves. The second ap...

  2. Comparing geological and statistical approaches for element selection in sediment tracing research

    Science.gov (United States)

    Laceby, J. Patrick; McMahon, Joe; Evrard, Olivier; Olley, Jon

    2015-04-01

    Elevated suspended sediment loads reduce reservoir capacity and significantly increase the cost of operating water treatment infrastructure, making the management of sediment supply to reservoirs of increasingly importance. Sediment fingerprinting techniques can be used to determine the relative contributions of different sources of sediment accumulating in reservoirs. The objective of this research is to compare geological and statistical approaches to element selection for sediment fingerprinting modelling. Time-integrated samplers (n=45) were used to obtain source samples from four major subcatchments flowing into the Baroon Pocket Dam in South East Queensland, Australia. The geochemistry of potential sources were compared to the geochemistry of sediment cores (n=12) sampled in the reservoir. The geochemical approach selected elements for modelling that provided expected, observed and statistical discrimination between sediment sources. Two statistical approaches selected elements for modelling with the Kruskal-Wallis H-test and Discriminatory Function Analysis (DFA). In particular, two different significance levels (0.05 & 0.35) for the DFA were included to investigate the importance of element selection on modelling results. A distribution model determined the relative contributions of different sources to sediment sampled in the Baroon Pocket Dam. Elemental discrimination was expected between one subcatchment (Obi Obi Creek) and the remaining subcatchments (Lexys, Falls and Bridge Creek). Six major elements were expected to provide discrimination. Of these six, only Fe2O3 and SiO2 provided expected, observed and statistical discrimination. Modelling results with this geological approach indicated 36% (+/- 9%) of sediment sampled in the reservoir cores were from mafic-derived sources and 64% (+/- 9%) were from felsic-derived sources. The geological and the first statistical approach (DFA0.05) differed by only 1% (σ 5%) for 5 out of 6 model groupings with only

  3. Comparative evaluation of statistical and mechanistic models of Escherichia coli at beaches in southern Lake Michigan

    Science.gov (United States)

    Safaie, Ammar; Wendzel, Aaron; Ge, Zhongfu; Nevers, Meredith; Whitman, Richard L.; Corsi, Steven R.; Phanikumar, Mantha S.

    2016-01-01

    Statistical and mechanistic models are popular tools for predicting the levels of indicator bacteria at recreational beaches. Researchers tend to use one class of model or the other, and it is difficult to generalize statements about their relative performance due to differences in how the models are developed, tested, and used. We describe a cooperative modeling approach for freshwater beaches impacted by point sources in which insights derived from mechanistic modeling were used to further improve the statistical models and vice versa. The statistical models provided a basis for assessing the mechanistic models which were further improved using probability distributions to generate high-resolution time series data at the source, long-term “tracer” transport modeling based on observed electrical conductivity, better assimilation of meteorological data, and the use of unstructured-grids to better resolve nearshore features. This approach resulted in improved models of comparable performance for both classes including a parsimonious statistical model suitable for real-time predictions based on an easily measurable environmental variable (turbidity). The modeling approach outlined here can be used at other sites impacted by point sources and has the potential to improve water quality predictions resulting in more accurate estimates of beach closures.

  4. Measuring academic research how to undertake a bibliometric study

    CERN Document Server

    Andres, Ana

    2009-01-01

    Measuring Academic Research outlines how to undertake a bibliometric study, a topic of vital importance in academic research today. Scientometrics studies assess scientific productivity and can be applied to all disciplines. Many analyses have been applied in relation to bibliometric studies, but few have shown how to actually carry out the analysis. This book provides a guide on how to develop a bibliometric study, from the first step in which the topic study has to be set, to the analysis and interpretation.

  5. PERFORMANCE ASSESMENT OF THE RESEARCH: BIBLIOMETRICS

    Directory of Open Access Journals (Sweden)

    T. O. Kolesnykova

    2015-06-01

    Full Text Available Purpose. Key performance indicators of the research are bibliometric ones which are a powerful informative tool to support the development of science. Therefore, nowadays in the world they are related to the obligatory elements in reporting of scientific institutions, universities, research groups and individual scientists. Based on the above stated, the purpose of the article is: 1 disclosure of concepts in bibliometrics; 2 definition the role of university libraries in the processes of University research measuring; 3 description the program Bibexel methodology for the analysis of the scientific articles metadata. Methodology. The theoretical base of the research is publications covering contemporary developments in bibliometrics and scientometrics. Practical foundation – the metadata of articles posted in: 1 Scopus database, authors are the scientists of the Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan, 2 ScienceDirect database, dedicated to the development of railway transport. Findings. In the course of the study authors have disclosed principal bibliometric concepts. A Bibexel program method for analyzing metadata, namely analysis of the links between co-authors and keyword was described. With its help it was determined that the most «top» topics for researchers all over the world, in the field of railway transport in 2015 year are: planning a high-speed movement, the critical speed definition, computer calculation of railway bridges. It was proved that today the work of University libraries in the world with bibliometric indicators as an indicators of the science development, becomes one of the leading direction of their activity. Originality. The authors substantiated and realized the bibliometric researchability, using Bibexel program in the conditions of limited access at the university libraries in Ukraine to international full-text databases and Science Citation one. Vision about the

  6. 虚拟现实与教育研究的文献计量学分析%A Research on Virtual Reality and Education Based on Bibliometrical Statistical Analysis

    Institute of Scientific and Technical Information of China (English)

    付达杰

    2011-01-01

    Pedagogically,any new technology will have definite influences on teaching.The advent of the virtual reality has caught the global attention in the field of education.According to the theory of statistic metrology,the articles on virtual reality and education published in China in recent 15 years(1995-2009)are analyzed.The research situation since then are studied,some problems are found out,and advice is given accordingly.%从教育学的角度,任何一种新技术的出现,都会对教育产生一定的影响。虚拟现实的出现,引起全球教育界的高度重视。本文统计了近15年来(1995~2009年)我国研究虚拟现实与教育的相关论文,利用文献计量法进行分析,从论文发表时间、关键词等几个方面反映目前的研究状况,并在此基础上提出建议。

  7. Comparative evaluation of physics-based and statistical forecasts in Northern California

    Science.gov (United States)

    Segou, M.; Parsons, T.; Ellsworth, W.

    2013-12-01

    perform a retrospective forecast test using Northern California seismicity for the period between 1980 and 2009. We compare 7 realizations of the short-term clustering epidemic-type aftershock sequence (ETAS) model, and 21 models combining Coulomb stress change calculations and Rate/State theory (CRS) to forecast seismicity rates in 10 day time intervals. We employ a common learning phase (1974-1980) for CRS models to ensure consistency, and we evaluate the forecasts with log likelihood statistics to detect any spatial inconsistencies and compare the total numbers of forecasts versus observed events. We find that: (1) ETAS models are better forecasters of the spatial evolution in seismicity in the near-source region, (2) CRS models can compete with ETAS models away from the mainshock rupture, and for short periods after mainshocks, (3) CRS models with optimally oriented receiver fault planes perform better in the first few days after mainshocks, whereas mapped fault planes should be implemented for longer-term forecasting, and (4) CRS models based on shear stress change calculations have comparable performance with Coulomb stress change models, with the benefit of lesser parameters involved in stress calculations. We conclude that physics-based and statistical forecast models are complimentary to each other and that future forecasts should be based on statistical models for near-source regions, and physical models for longer periods and distances. However, the realization of the CRS models involves a number of critical parameters (reference seismicity rates, regional stress field, and loading rates), which should be retrospectively tested to improve the predictive power of physics-based models.

  8. Handbook of bibliometric indicators quantitative tools for studying and evaluating research

    CERN Document Server

    Todeschini, Roberto

    2016-01-01

    At last, the first systematic guide to the growing jungle of citation indices and other bibliometric indicators. Written with the aim of providing a complete and unbiased overview of all available statistical measures for scientific productivity, the core of this reference is an alphabetical dictionary of indices and other algorithms used to evaluate the importance and impact of researchers and their institutions. In 150 major articles, the authors describe all indices in strictly mathematical terms without passing judgement on their relative merit. From widely used measures, such as the journal impact factor or the h-index, to highly specialized indices, all indicators currently in use in the sciences and humanities are described, and their application explained. The introductory section and the appendix contain a wealth of valuable supporting information on data sources, tools and techniques for bibliometric and scientometric analysis - for individual researchers as well as their funders and publishers.

  9. Statistical Methods for Comparative Phenomics Using High-Throughput Phenotype Microarrays

    KAUST Repository

    Sturino, Joseph

    2010-01-24

    We propose statistical methods for comparing phenomics data generated by the Biolog Phenotype Microarray (PM) platform for high-throughput phenotyping. Instead of the routinely used visual inspection of data with no sound inferential basis, we develop two approaches. The first approach is based on quantifying the distance between mean or median curves from two treatments and then applying a permutation test; we also consider a permutation test applied to areas under mean curves. The second approach employs functional principal component analysis. Properties of the proposed methods are investigated on both simulated data and data sets from the PM platform.

  10. Statistical methods for comparative phenomics using high-throughput phenotype microarrays.

    Science.gov (United States)

    Sturino, Joseph; Zorych, Ivan; Mallick, Bani; Pokusaeva, Karina; Chang, Ying-Ying; Carroll, Raymond J; Bliznuyk, Nikolay

    2010-08-24

    We propose statistical methods for comparing phenomics data generated by the Biolog Phenotype Microarray (PM) platform for high-throughput phenotyping. Instead of the routinely used visual inspection of data with no sound inferential basis, we develop two approaches. The first approach is based on quantifying the distance between mean or median curves from two treatments and then applying a permutation test; we also consider a permutation test applied to areas under mean curves. The second approach employs functional principal component analysis. Properties of the proposed methods are investigated on both simulated data and data sets from the PM platform.

  11. Statistical Methods for Comparative Phenomics Using High-Throughput Phenotype Microarrays*

    Science.gov (United States)

    Sturino, Joseph; Zorych, Ivan; Mallick, Bani; Pokusaeva, Karina; Chang, Ying-Ying; Carroll, Raymond J; Bliznuyk, Nikolay

    2010-01-01

    We propose statistical methods for comparing phenomics data generated by the Biolog Phenotype Microarray (PM) platform for high-throughput phenotyping. Instead of the routinely used visual inspection of data with no sound inferential basis, we develop two approaches. The first approach is based on quantifying the distance between mean or median curves from two treatments and then applying a permutation test; we also consider a permutation test applied to areas under mean curves. The second approach employs functional principal component analysis. Properties of the proposed methods are investigated on both simulated data and data sets from the PM platform. PMID:20865133

  12. BIBLIOMETRIC ANALYSIS ABOUT UNIVERSITY SOCIAL RESPONSIBILITY

    Directory of Open Access Journals (Sweden)

    María Inés Pacenza

    2013-11-01

    Full Text Available A descriptive study is presented which goal was to know about University Social Responsibility’s scientific production. A bibliometric analysis of 94 documents obtained from Redalyc and Scielo data bases and from Science and Technology Electronic Library from Science, Technology and Productive Innovation Ministry (Argentina was carried out. Results showed that University Social Responsibility is a recently study area with newly visibility in considered bases, the number of publications has grown since 2007. Venezuela, Mexico, Colombia and Chile are the countries which present more published documents in the area. Five journals are the most productive. The 90% of the analyzed documents are signed by only one author. Bibliometric studies about this topic were not found.

  13. Archaeological and historical glasses: A bibliometric study

    OpenAIRE

    Palomar Sanz, Teresa; García Heras, Manuel; Villegas Broncano, María Ángeles

    2009-01-01

    Glass is one of the materials more widely developed throughout History. In the last decades, it has been stated a growing demand in the application of chemical-physical techniques to obtain more detailed information on technology and production of glasses in past societies. This research field lies within the domain of archaeometry. Results of a bibliometric study undertaken on 201 scientific articles published on ancient and historical glasses between 1987 and 2008 are presented ...

  14. Bibliometric trends in ophthalmology 1997-2009

    OpenAIRE

    2015-01-01

    Aims: To track citation patterns in ophthalmic journals and contrast them with major medical and surgical journals from 1997 to 2009. In addition, we want to familiarize the ophthalmic community with bibliometrics indices. Materials and Methods: Data retrieved from Institute for Scientific Information and related websites include 2-year journal impact factor JIF, 5-year impact, Eigenfactor score, H-factor, Article Influence score, and SCImago factor. Results: JIF rose steadily around 10% annu...

  15. The Bibliometric Properties of Article Readership Information

    OpenAIRE

    Kurtz, Michael J.; Eichhorn, Guenther; Accomazzi, Alberto; Grant, Carolyn S.; Demleitner, Markus; Murray, Stephen S.; Martimbeau, Nathalie; Elwell, Barbara

    2009-01-01

    The NASA Astrophysics Data System (ADS), along with astronomy's journals and data centers (a collaboration dubbed URANIA), has developed a distributed on-line digital library which has become the dominant means by which astronomers search, access and read their technical literature. Digital libraries such as the NASA Astrophysics Data System permit the easy accumulation of a new type of bibliometric measure, the number of electronic accesses (``reads'') of individual articles. We explore vari...

  16. A complex systems approach to bibliometrics

    Science.gov (United States)

    Stringer, Michael J.

    Enabled by technological change, we are in the midst of a fundamental shift in how scientific information is produced and communicated. Electronic publishing, preprint archives, blogs, and wikis are emerging as possible viable alternatives to the current journal publishing and peer review system. However, these new technologies flood the environment with information, making it increasingly difficult to find the highest quality and most relevant papers. Additionally, accreditation and quality assessment of published material becomes nearly impossible for agencies interested in funding the research and development that is most likely to succeed. Recently, bibliometric tools have emerged as an effective means for the filtering, accreditation, and assessment of scholarly information. In this thesis, we approach bibliometrics from a complex systems perspective. A unique characteristic of the work presented in this thesis is that we perform empirical validation of bibliometric models using the most comprehensive bibliographic database available. Using these methods, we quantify the dynamics of citations to scientific journals, and investigate the relationship between social network position and research performance.

  17. Integrated care: a comprehensive bibliometric analysis and literature review

    Directory of Open Access Journals (Sweden)

    Xiaowei Sun

    2014-06-01

    Full Text Available Introduction: Integrated care could not only fix up fragmented health care but also improve the continuity of care and the quality of life. Despite the volume and variety of publications, little is known about how ‘integrated care’ has developed. There is a need for a systematic bibliometric analysis on studying the important features of the integrated care literature.Aim: To investigate the growth pattern, core journals and jurisdictions and identify the key research domains of integrated care.Methods: We searched Medline/PubMed using the search strategy ‘(delivery of health care, integrated [MeSH Terms] OR integrated care [Title/Abstract]’ without time and language limits. Second, we extracted the publishing year, journals, jurisdictions and keywords of the retrieved articles. Finally, descriptive statistical analysis by the Bibliographic Item Co-occurrence Matrix Builder and hierarchical clustering by SPSS were used.Results: As many as 9090 articles were retrieved. Results included: (1 the cumulative numbers of the publications on integrated care rose perpendicularly after 1993; (2 all documents were recorded by 1646 kinds of journals. There were 28 core journals; (3 the USA is the predominant publishing country; and (4 there are six key domains including: the definition/models of integrated care, interdisciplinary patient care team, disease management for chronically ill patients, types of health care organizations and policy, information system integration and legislation/jurisprudence.Discussion and conclusion: Integrated care literature has been most evident in developed countries. International Journal of Integrated Care is highly recommended in this research area. The bibliometric analysis and identification of publication hotspots provides researchers and practitioners with core target journals, as well as an overview of the field for further research in integrated care.

  18. Integrated care: a comprehensive bibliometric analysis and literature review

    Directory of Open Access Journals (Sweden)

    Xiaowei Sun

    2014-06-01

    Full Text Available Introduction: Integrated care could not only fix up fragmented health care but also improve the continuity of care and the quality of life. Despite the volume and variety of publications, little is known about how ‘integrated care’ has developed. There is a need for a systematic bibliometric analysis on studying the important features of the integrated care literature. Aim: To investigate the growth pattern, core journals and jurisdictions and identify the key research domains of integrated care. Methods: We searched Medline/PubMed using the search strategy ‘(delivery of health care, integrated [MeSH Terms] OR integrated care [Title/Abstract]’ without time and language limits. Second, we extracted the publishing year, journals, jurisdictions and keywords of the retrieved articles. Finally, descriptive statistical analysis by the Bibliographic Item Co-occurrence Matrix Builder and hierarchical clustering by SPSS were used. Results: As many as 9090 articles were retrieved. Results included: (1 the cumulative numbers of the publications on integrated care rose perpendicularly after 1993; (2 all documents were recorded by 1646 kinds of journals. There were 28 core journals; (3 the USA is the predominant publishing country; and (4 there are six key domains including: the definition/models of integrated care, interdisciplinary patient care team, disease management for chronically ill patients, types of health care organizations and policy, information system integration and legislation/jurisprudence. Discussion and conclusion: Integrated care literature has been most evident in developed countries. International Journal of Integrated Care is highly recommended in this research area. The bibliometric analysis and identification of publication hotspots provides researchers and practitioners with core target journals, as well as an overview of the field for further research in integrated care.

  19. Integrated care: a comprehensive bibliometric analysis and literature review.

    Science.gov (United States)

    Sun, Xiaowei; Tang, Wenxi; Ye, Ting; Zhang, Yan; Wen, Bo; Zhang, Liang

    2014-04-01

    Integrated care could not only fix up fragmented health care but also improve the continuity of care and the quality of life. Despite the volume and variety of publications, little is known about how 'integrated care' has developed. There is a need for a systematic bibliometric analysis on studying the important features of the integrated care literature. To investigate the growth pattern, core journals and jurisdictions and identify the key research domains of integrated care. We searched Medline/PubMed using the search strategy '(delivery of health care, integrated [MeSH Terms]) OR integrated care [Title/Abstract]' without time and language limits. Second, we extracted the publishing year, journals, jurisdictions and keywords of the retrieved articles. Finally, descriptive statistical analysis by the Bibliographic Item Co-occurrence Matrix Builder and hierarchical clustering by SPSS were used. As many as 9090 articles were retrieved. Results included: (1) the cumulative numbers of the publications on integrated care rose perpendicularly after 1993; (2) all documents were recorded by 1646 kinds of journals. There were 28 core journals; (3) the USA is the predominant publishing country; and (4) there are six key domains including: the definition/models of integrated care, interdisciplinary patient care team, disease management for chronically ill patients, types of health care organizations and policy, information system integration and legislation/jurisprudence. Integrated care literature has been most evident in developed countries. International Journal of Integrated Care is highly recommended in this research area. The bibliometric analysis and identification of publication hotspots provides researchers and practitioners with core target journals, as well as an overview of the field for further research in integrated care.

  20. The Simon-Yule Approach to Bibliometric Modeling.

    Science.gov (United States)

    Chen, Ye-Sho; And Others

    1994-01-01

    Investigates the relationships between the parameters of the Simon-Yule model and the shapes of three bibliometric distributions: Lotka's Law of Scientific Productivity; Bradford's Law of Bibliometric Scattering; and Zipf's Law of Word Frequency. The results indicate that the probability of a new entry determines the characteristics of all three…

  1. Research Performance Evaluation: Some Critical Thoughts on Standard Bibliometric Indicators

    Science.gov (United States)

    Anninos, Loukas N.

    2014-01-01

    The bibliometric methodology is an established technique for research evaluation as it offers an objective determination and comparison of research performance. This paper aims to critically assess some standard bibliometric indicators commonly used (based on publication and citation counts) to evaluate academic units, and examine whether there…

  2. A bibliometric analysis of the DESIGN 2012 conference

    DEFF Research Database (Denmark)

    Cash, Philip; Skec, Stanko; Storga, Mario

    2013-01-01

    Bibliometric analyses play an important role in reflecting on a research field and identifying areas of strength and weakness. This paper builds on recent reflective efforts within the community by presenting a bibliometric analysis of the DESIGN 2012 conference. Over 2700 citations were identified...

  3. Scaling Analysis of Author-Level Bibliometric Indicators

    DEFF Research Database (Denmark)

    Wildgaard, Lorna Elizabeth; Larsen, Birger

    2014-01-01

    Despite of the concerns from the bibliometric community, evaluation of the individual through bibliometric indices is already performed as a form of ‘pseudo peer review’ in selection of candidates for tenure, in background checks of potential employees’ publicationand citation impact...

  4. FISH NUTRITION: BIBLIOMETRIC ANALYSIS IN BRAZIL AND THE WORLD

    Directory of Open Access Journals (Sweden)

    Marcelo Fanttini POLESE

    2016-06-01

    Full Text Available The Science of fish nutrition is an important issue and of great importance from the point of view of developing new diets with respect to the nutritional requirements of various fish species and the environment, with many published articles addressing the subject. The objective of this study was to make a bibliometric analysis to identify trends in publications worldwide and in Brazil. Took place during the month of December 2011, searches the Scopus base and recorded information related to the main countries, authors, publishing and institutions vehicles. The study revealed that Brazil, besides occupying Featured number of articles on the subject, including having a center of excellence in the subject, presented high growth rates of articles, compared to global rates. Further, it was found that most of the articles on the topic is concentrated in a few authors, institutions and journals.

  5. Metric study of information literacy in Latin America: from bibliometrics to altmetrics

    Directory of Open Access Journals (Sweden)

    Alejandro Uribe-Tirado

    2017-09-01

    Full Text Available This study identifies the presence, productivity and influence of Ibero-American authors that write about information literacy (InfoLit. Using bibliometric and altmetric indicators, it seeks to analyze the impact and subsequent use of their scholarly works on social and scientific platforms. Fifty-five authors with the highest productivity were identified, based on the results of bibliometric studies on InfoLit carried out on both an international and Ibero-American scale in searches of major databases as well as publications collected in a Latin American wiki. Subsequently an analysis of bibliometric and altmetric indicators at the author and publication level was carried out, based on the results of searches on eight scientific platforms (Google Scholar, ResearchGate, Academia.edu, Mendeley, ORCID, IraLIS, E-LIS and EXIT, three social networks (Facebook, Twitter and LinkedIn, and data provided by a commercial supplier (Altmetric.com. Overall we found a greater presence of authors in ResearchGate (58%, Academia.edu (51% and Google Scholar (49% as opposed to Mendeley (25% and ORCID (18%. Furthermore, as to social platforms, the greatest potential influence lies with Facebook, due to its high number of followers ( / top 10 authors. In addition, an analysis with the Spearman rho statistic, shows among some sources and platforms, a low correlation between the number of citations in Google Scholar and readings in Mendeley (r = 382 and low negative for mentions in blogs (r = 0,-237, Google+ (r = 0, -214 and Twitter (r = 0, -183. In conclusion, both the productivity and the impact-visibility center on specific authors writing about InfoLit, and various measurement resources show that for these authors there is a positive two-way impact from bibliometric to altmetric and vice versa.

  6. Comparing physically-based and statistical landslide susceptibility model outputs - a case study from Lower Austria

    Science.gov (United States)

    Canli, Ekrem; Thiebes, Benni; Petschko, Helene; Glade, Thomas

    2015-04-01

    By now there is a broad consensus that due to human-induced global change the frequency and magnitude of heavy precipitation events is expected to increase in certain parts of the world. Given the fact, that rainfall serves as the most common triggering agent for landslide initiation, also an increased landside activity can be expected there. Landslide occurrence is a globally spread phenomenon that clearly needs to be handled. The present and well known problems in modelling landslide susceptibility and hazard give uncertain results in the prediction. This includes the lack of a universal applicable modelling solution for adequately assessing landslide susceptibility (which can be seen as the relative indication of the spatial probability of landslide initiation). Generally speaking, there are three major approaches for performing landslide susceptibility analysis: heuristic, statistical and deterministic models, all with different assumptions, its distinctive data requirements and differently interpretable outcomes. Still, detailed comparison of resulting landslide susceptibility maps are rare. In this presentation, the susceptibility modelling outputs of a deterministic model (Stability INdex MAPping - SINMAP) and a statistical modelling approach (generalized additive model - GAM) are compared. SINMAP is an infinite slope stability model which requires parameterization of soil mechanical parameters. Modelling with the generalized additive model, which represents a non-linear extension of a generalized linear model, requires a high quality landslide inventory that serves as the dependent variable in the statistical approach. Both methods rely on topographical data derived from the DTM. The comparison has been carried out in a study area located in the district of Waidhofen/Ybbs in Lower Austria. For the whole district (ca. 132 km²), 1063 landslides have been mapped and partially used within the analysis and the validation of the model outputs. The respective

  7. Comparing the Hearts of German Shepherd and Mongrel Dogs Using Statistical Shape Analysis

    Directory of Open Access Journals (Sweden)

    Guven Ozkaya*, Gulsum Ozyigit1, Ilker Ercan and Ilker Arican1

    2013-04-01

    Full Text Available The aim of this study was to conduct a statistical shape analysis of the heart of dogs and to compare this data between German Shepherd and Mongrel dogs. An effective way to examine these shapes is to record the locations of certain points on the object. In this study, 10 hearts were collected from each breed. EDMA and TPS techniques were used to examine genus-based changes in the shape of the heart. The shape deformations were expressed using expansion and compression grids. There was no statistically significant difference with respect to the general shape of the heart between the genera. However, there were local shape differences between the genera in some of the inter-landmark distances: 6% of the inter-landmark distances were greater in German Shepherd dogs, and 11% were greater in Mongrels. There are no heart shape differences between genera, although significant differences were found between the upper part of the left ventricle and the lower part of the right ventricle. The upper part of the left ventricle in Mongrels showed more enlargement than in German Shepherds. The lower part of the right ventricle in Mongrels had more enlargement than in German Shepherds; however, the middle part of the right ventricle of German Shepherds had more enlargement than in Mongrels. Although there were some local significant shape differences between the upper part of the left ventricle and the lower part of the right ventricle, however, there were no general heart shape differences between German Shepherd and Mongrel dogs.

  8. A Bibliometric Study to Manage a Journal Collection in an Astronomical Library: Some Results

    Science.gov (United States)

    Gomez, Monique

    The evaluation of the use of library collections is a fundamental tool for the development of a relevant and cost-effective collection. Bibliometrics offers several methods to measure the level of use of collections. In this paper, we present the first results of a bibliometric analysis of the references cited in the articles published by authors of the Instituto de Astrofísica de Canarias during the last decade. We have determined which kinds of publications and which journals are mainly used. We also have studied the ages of the cited journals and their cost-effectiveness. Additionally, to see if the advent of the WWW in the mid 1990s has influenced the reading or citing practices of the authors, we have compared two sets of data: articles published over the period 1991--3 that we define as the pre-WWW period and articles published over the period 1997--9 defined as the WWW period.

  9. INFORMATION SYSTEMS (IS AND INNOVATION: BIBLIOMETRIC STUDY

    Directory of Open Access Journals (Sweden)

    Fernanda de Carvalho Pereira

    2016-04-01

    Full Text Available Information Systems (IS and innovation are two issues currently discussed. The purpose of this articleis to verify the completeness of the literature with regard to the treatment of these two topics together. With this purpose, a bibliometric research was conducted using bases in ISI Web of Science, Scopus and Scielo. 134 articles were analyzed and generated some results, such as: predominance of publications from Brazil and the United States of America; higher recurrence of the Enterprise Resource Planning citation (ERP in comparison to other tools; and predominance of practical researches, which apply concepts from the literature in real situations.

  10. Comparative evaluation of spectroscopic models using different multivariate statistical tools in a multicancer scenario.

    Science.gov (United States)

    Ghanate, A D; Kothiwale, S; Singh, S P; Bertrand, Dominique; Krishna, C Murali

    2011-02-01

    Cancer is now recognized as one of the major causes of morbidity and mortality. Histopathological diagnosis, the gold standard, is shown to be subjective, time consuming, prone to interobserver disagreement, and often fails to predict prognosis. Optical spectroscopic methods are being contemplated as adjuncts or alternatives to conventional cancer diagnostics. The most important aspect of these approaches is their objectivity, and multivariate statistical tools play a major role in realizing it. However, rigorous evaluation of the robustness of spectral models is a prerequisite. The utility of Raman spectroscopy in the diagnosis of cancers has been well established. Until now, the specificity and applicability of spectral models have been evaluated for specific cancer types. In this study, we have evaluated the utility of spectroscopic models representing normal and malignant tissues of the breast, cervix, colon, larynx, and oral cavity in a broader perspective, using different multivariate tests. The limit test, which was used in our earlier study, gave high sensitivity but suffered from poor specificity. The performance of other methods such as factorial discriminant analysis and partial least square discriminant analysis are at par with more complex nonlinear methods such as decision trees, but they provide very little information about the classification model. This comparative study thus demonstrates not just the efficacy of Raman spectroscopic models but also the applicability and limitations of different multivariate tools for discrimination under complex conditions such as the multicancer scenario.

  11. Comparative evaluation of spectroscopic models using different multivariate statistical tools in a multicancer scenario

    Science.gov (United States)

    Ghanate, A. D.; Kothiwale, S.; Singh, S. P.; Bertrand, Dominique; Krishna, C. Murali

    2011-02-01

    Cancer is now recognized as one of the major causes of morbidity and mortality. Histopathological diagnosis, the gold standard, is shown to be subjective, time consuming, prone to interobserver disagreement, and often fails to predict prognosis. Optical spectroscopic methods are being contemplated as adjuncts or alternatives to conventional cancer diagnostics. The most important aspect of these approaches is their objectivity, and multivariate statistical tools play a major role in realizing it. However, rigorous evaluation of the robustness of spectral models is a prerequisite. The utility of Raman spectroscopy in the diagnosis of cancers has been well established. Until now, the specificity and applicability of spectral models have been evaluated for specific cancer types. In this study, we have evaluated the utility of spectroscopic models representing normal and malignant tissues of the breast, cervix, colon, larynx, and oral cavity in a broader perspective, using different multivariate tests. The limit test, which was used in our earlier study, gave high sensitivity but suffered from poor specificity. The performance of other methods such as factorial discriminant analysis and partial least square discriminant analysis are at par with more complex nonlinear methods such as decision trees, but they provide very little information about the classification model. This comparative study thus demonstrates not just the efficacy of Raman spectroscopic models but also the applicability and limitations of different multivariate tools for discrimination under complex conditions such as the multicancer scenario.

  12. Audiology patient fall statistics and risk factors compared to non-audiology patients.

    Science.gov (United States)

    Criter, Robin E; Honaker, Julie A

    2016-10-01

    To compare fall statistics (e.g. incidence, prevalence), fall risks, and characteristics of patients who seek hearing healthcare from an audiologist to individuals who have not sought such services. Case-control study. Two groups of community-dwelling older adult patients: 25 audiology patients aged 60 years or older (M age: 69.2 years, SD: 4.5, range: 61-77) and a control group (gender- and age-matched ±2 years) of 25 non-audiology patients (M age: 69.6, SD: 4.7, range: 60-77). Annual incidence of falls (most recent 12 months) was higher in audiology patients (68.0%) than non-audiology patients (28.0%; p = .005). Audiology patients reported a higher incidence of multiple recent falls (p =.025) and more chronic health conditions (p = .028) than non-audiology patients. Significantly more audiology patients fall on an annual basis than non-audiology patients, suggesting that falls are a pervasive issue in general hearing clinics. Further action on the part of healthcare professionals providing audiologic services may be necessary to identify individuals at risk for falling.

  13. A Statistical Comparative Study of the Working Poor in Japan and Canada

    Directory of Open Access Journals (Sweden)

    Masatoshi Murakami

    2011-01-01

    Full Text Available Problem statement: Recently in Japan, there has been an increase in the group which is termed the ‘Working Poor’. However, the group’s size and configuration remains unknown. Approach: The purpose of this study is to compare the working poor in Canada and Japan using microdata. First, the definition and method of estimation of the working poor provided by (Iwai and Murakami, 2007 are provided along with later modifications. Second, results of the investigation into data appropriate for use in estimating Canada’s working poor and poverty line are given, as are estimates of Canada’s working poor. Last, the characteristics of unemployment, unstable employment and the labor market are examined for both Canada and Japan and the similarities and differences between the two countries are highlighted. Results: In Canada and Japan, the working poor are most likely to be found among the young, those with a low level of education, those in unstable employment or those working in a company having few employees. As regards the differences between the two countries, males are more likely to be the working poor than females in Canada, though this trend is not seen in Japan; moreover, the percentage of the working poor is high among the 25-34 and 35-44 age groups in Japan, though this is not the case in Canada. Conclusion: As conclusions of this study, the first challenge that lies ahead is to find data from the two countries that allows a more rigorous comparison. The second challenge is to re-evaluate estimates made to date after a full investigation of labor market systems. Statistical Analysis Research Project (2009, we have estimated the working poor of the UK and compared their figures with those of Japan. The third challenge is thus to add the findings of this study to those from the UK/Japan and thereby perform a trilateral comparison.

  14. Comparing Methods for Item Analysis: The Impact of Different Item-Selection Statistics on Test Difficulty

    Science.gov (United States)

    Jones, Andrew T.

    2011-01-01

    Practitioners often depend on item analysis to select items for exam forms and have a variety of options available to them. These include the point-biserial correlation, the agreement statistic, the B index, and the phi coefficient. Although research has demonstrated that these statistics can be useful for item selection, no research as of yet has…

  15. INFORMATION RESEARCH: AN INTERNATIONAL ELECTRONIC JOURNAL: A BIBLIOMETRIC STUDY

    Directory of Open Access Journals (Sweden)

    MANISHA GAWDE

    2012-01-01

    Full Text Available At present bibliometric study is an interacting research topic in the field of library and information science. Library and information science professionals are doing bibliometric study in various fields for the collection development of different subject in their libraries. This paper examines that the Bibliometric Analysis of the Information Research: an International Electronic Journal (IRIEJ. Which is included the study of form of documents, authorship pattern, ranking of authors, year wise distribution of references and rticles, ranking of cited journals, cited publishers and research contributors of IRIEJ.

  16. Bibliometrics as politics: the case of emerging disciplines.

    Science.gov (United States)

    Traynor, Michael

    2011-03-01

    Academic nurses are increasingly turning to bibliometrics to assess the state and status of research publication in nursing in countries around the world. Early bibliometric studies were carried out by Cattell as part of a project to advance research in psychology in the early decades of the 20th century. There are some echoes in nursing's moves to increase its standing over the last 40 years. The interpretation of bibliometric studies can reveal embedded values about academic disciplinary activity and normative views of scientific work. Patterns of publishing by nurse academics appear increasingly to resemble those in biomedicine as a whole.

  17. A comparative verification of high resolution precipitation forecasts using model output statistics

    Science.gov (United States)

    van der Plas, Emiel; Schmeits, Maurice; Hooijman, Nicolien; Kok, Kees

    2017-04-01

    Verification of localized events such as precipitation has become even more challenging with the advent of high-resolution meso-scale numerical weather prediction (NWP). The realism of a forecast suggests that it should compare well against precipitation radar imagery with similar resolution, both spatially and temporally. Spatial verification methods solve some of the representativity issues that point verification gives rise to. In this study a verification strategy based on model output statistics is applied that aims to address both double penalty and resolution effects that are inherent to comparisons of NWP models with different resolutions. Using predictors based on spatial precipitation patterns around a set of stations, an extended logistic regression (ELR) equation is deduced, leading to a probability forecast distribution of precipitation for each NWP model, analysis and lead time. The ELR equations are derived for predictands based on areal calibrated radar precipitation and SYNOP observations. The aim is to extract maximum information from a series of precipitation forecasts, like a trained forecaster would. The method is applied to the non-hydrostatic model Harmonie (2.5 km resolution), Hirlam (11 km resolution) and the ECMWF model (16 km resolution), overall yielding similar Brier skill scores for the 3 post-processed models, but larger differences for individual lead times. Besides, the Fractions Skill Score is computed using the 3 deterministic forecasts, showing somewhat better skill for the Harmonie model. In other words, despite the realism of Harmonie precipitation forecasts, they only perform similarly or somewhat better than precipitation forecasts from the 2 lower resolution models, at least in the Netherlands.

  18. Seeking Temporal Predictability in Speech: Comparing Statistical Approaches on 18 World Languages

    Science.gov (United States)

    Jadoul, Yannick; Ravignani, Andrea; Thompson, Bill; Filippi, Piera; de Boer, Bart

    2016-01-01

    Temporal regularities in speech, such as interdependencies in the timing of speech events, are thought to scaffold early acquisition of the building blocks in speech. By providing on-line clues to the location and duration of upcoming syllables, temporal structure may aid segmentation and clustering of continuous speech into separable units. This hypothesis tacitly assumes that learners exploit predictability in the temporal structure of speech. Existing measures of speech timing tend to focus on first-order regularities among adjacent units, and are overly sensitive to idiosyncrasies in the data they describe. Here, we compare several statistical methods on a sample of 18 languages, testing whether syllable occurrence is predictable over time. Rather than looking for differences between languages, we aim to find across languages (using clearly defined acoustic, rather than orthographic, measures), temporal predictability in the speech signal which could be exploited by a language learner. First, we analyse distributional regularities using two novel techniques: a Bayesian ideal learner analysis, and a simple distributional measure. Second, we model higher-order temporal structure—regularities arising in an ordered series of syllable timings—testing the hypothesis that non-adjacent temporal structures may explain the gap between subjectively-perceived temporal regularities, and the absence of universally-accepted lower-order objective measures. Together, our analyses provide limited evidence for predictability at different time scales, though higher-order predictability is difficult to reliably infer. We conclude that temporal predictability in speech may well arise from a combination of individually weak perceptual cues at multiple structural levels, but is challenging to pinpoint. PMID:27994544

  19. Bibliometric trends in ophthalmology 1997-2009

    Directory of Open Access Journals (Sweden)

    Ahmad M Mansour

    2015-01-01

    Full Text Available Aims: To track citation patterns in ophthalmic journals and contrast them with major medical and surgical journals from 1997 to 2009. In addition, we want to familiarize the ophthalmic community with bibliometrics indices. Materials and Methods: Data retrieved from Institute for Scientific Information and related websites include 2-year journal impact factor JIF, 5-year impact, Eigenfactor score, H-factor, Article Influence score, and SCImago factor. Results: JIF rose steadily around 10% annually in ophthalmic journals, and likewise for major medical and surgical journals. JIF correlated with recent bibliometric indicators like 5-year impact, H index, and SCImago factor but not with Eigenfactor. Ophthalmic journals publishing reviews, basic science, or large volume on broad range of topics ranked at the top for JIF, while subspecialty journals tended to have low JIF. JIF of subspecialty journal Retina rose from 0.740 (rank 23 in 2000 to 3.088 in 2007 (rank 6. Conclusions: JIF tends to rise annually by 10% in medical, surgical, and ophthalmic fields. Journals publishing reviews, basic science, or large volume on broad range of topics rank at the top for JIF. The rapid rise of JIF for Retina unlike other subspecialties that stayed status quo is multifactorial: Change in editorial policies (introduction of review articles and omission of case reports and technological advances in the retinal field.

  20. Extreme weather exposure identification for road networks - a comparative assessment of statistical methods

    Science.gov (United States)

    Schlögl, Matthias; Laaha, Gregor

    2017-04-01

    The assessment of road infrastructure exposure to extreme weather events is of major importance for scientists and practitioners alike. In this study, we compare the different extreme value approaches and fitting methods with respect to their value for assessing the exposure of transport networks to extreme precipitation and temperature impacts. Based on an Austrian data set from 25 meteorological stations representing diverse meteorological conditions, we assess the added value of partial duration series (PDS) over the standardly used annual maxima series (AMS) in order to give recommendations for performing extreme value statistics of meteorological hazards. Results show the merits of the robust L-moment estimation, which yielded better results than maximum likelihood estimation in 62 % of all cases. At the same time, results question the general assumption of the threshold excess approach (employing PDS) being superior to the block maxima approach (employing AMS) due to information gain. For low return periods (non-extreme events) the PDS approach tends to overestimate return levels as compared to the AMS approach, whereas an opposite behavior was found for high return levels (extreme events). In extreme cases, an inappropriate threshold was shown to lead to considerable biases that may outperform the possible gain of information from including additional extreme events by far. This effect was visible from neither the square-root criterion nor standardly used graphical diagnosis (mean residual life plot) but rather from a direct comparison of AMS and PDS in combined quantile plots. We therefore recommend performing AMS and PDS approaches simultaneously in order to select the best-suited approach. This will make the analyses more robust, not only in cases where threshold selection and dependency introduces biases to the PDS approach but also in cases where the AMS contains non-extreme events that may introduce similar biases. For assessing the performance of

  1. Comparing the Goodness of Different Statistical Criteria for Evaluating the Soil Water Infiltration Models

    Directory of Open Access Journals (Sweden)

    S. Mirzaee

    2016-02-01

    Full Text Available Introduction: The infiltration process is one of the most important components of the hydrologic cycle. Quantifying the infiltration water into soil is of great importance in watershed management. Prediction of flooding, erosion and pollutant transport all depends on the rate of runoff which is directly affected by the rate of infiltration. Quantification of infiltration water into soil is also necessary to determine the availability of water for crop growth and to estimate the amount of additional water needed for irrigation. Thus, an accurate model is required to estimate infiltration of water into soil. The ability of physical and empirical models in simulation of soil processes is commonly measured through comparisons of simulated and observed values. For these reasons, a large variety of indices have been proposed and used over the years in comparison of infiltration water into soil models. Among the proposed indices, some are absolute criteria such as the widely used root mean square error (RMSE, while others are relative criteria (i.e. normalized such as the Nash and Sutcliffe (1970 efficiency criterion (NSE. Selecting and using appropriate statistical criteria to evaluate and interpretation of the results for infiltration water into soil models is essential because each of the used criteria focus on specific types of errors. Also, descriptions of various goodness of fit indices or indicators including their advantages and shortcomings, and rigorous discussions on the suitability of each index are very important. The objective of this study is to compare the goodness of different statistical criteria to evaluate infiltration of water into soil models. Comparison techniques were considered to define the best models: coefficient of determination (R2, root mean square error (RMSE, efficiency criteria (NSEI and modified forms (such as NSEjI, NSESQRTI, NSElnI and NSEiI. Comparatively little work has been carried out on the meaning and

  2. Human Centred Design: a bibliometric overview based on Science Direct

    National Research Council Canada - National Science Library

    Lucas José Garcia; Giselle Schmidt Alves Díaz Merino; Susana Cristina Domenech; Eugenio Andres Díaz Merino; Adilson Luiz Pinto

    2016-01-01

    This article aims to realize a bibliometric review on Science Direct to create a outlook about Human Centred Design in order to identify the most significant authors, journals and key-words as well...

  3. Exploratory Visual Analysis of Statistical Results from Microarray Experiments Comparing High and Low Grade Glioma

    Directory of Open Access Journals (Sweden)

    Jason H. Moore

    2007-01-01

    Full Text Available The biological interpretation of gene expression microarray results is a daunting challenge. For complex diseases such as cancer, wherein the body of published research is extensive, the incorporation of expert knowledge provides a useful analytical framework. We have previously developed the Exploratory Visual Analysis (EVA software for exploring data analysis results in the context of annotation information about each gene, as well as biologically relevant groups of genes. We present EVA as a fl exible combination of statistics and biological annotation that provides a straightforward visual interface for the interpretation of microarray analyses of gene expression in the most commonly occurring class of brain tumors, glioma. We demonstrate the utility of EVA for the biological interpretation of statistical results by analyzing publicly available gene expression profi les of two important glial tumors. The results of a statistical comparison between 21 malignant, high-grade glioblastoma multiforme (GBM tumors and 19 indolent, low-grade pilocytic astrocytomas were analyzed using EVA. By using EVA to examine the results of a relatively simple statistical analysis, we were able to identify tumor class-specifi c gene expression patterns having both statistical and biological signifi cance. Our interactive analysis highlighted the potential importance of genes involved in cell cycle progression, proliferation, signaling, adhesion, migration, motility, and structure, as well as candidate gene loci on a region of Chromosome 7 that has been implicated in glioma. Because EVA does not require statistical or computational expertise and has the fl exibility to accommodate any type of statistical analysis, we anticipate EVA will prove a useful addition to the repertoire of computational methods used for microarray data analysis. EVA is available at no charge to academic users and can be found at http://www.epistasis.org.

  4. A unified approach to mapping and clustering of bibliometric networks

    OpenAIRE

    Waltman, L.R.; Eck, van, H.N.; Noyons, E.C.M.

    2010-01-01

    In the analysis of bibliometric networks, researchers often use mapping and clustering techniques in a combined fashion. Typically, however, mapping and clustering techniques that are used together rely on very different ideas and assumptions. We propose a unified approach to mapping and clustering of bibliometric networks. We show that the VOS mapping technique and a weighted and parameterized variant of modularity-based clustering can both be derived from the same underlying principle. We i...

  5. Sampling Issues in Bibliometric Analysis

    CERN Document Server

    Williams, Richard

    2014-01-01

    Bibliometricians face several issues when drawing and analyzing samples of citation records for their research. Drawing samples that are too small may make it difficult or impossible for studies to achieve their goals, while drawing samples that are too large may drain resources that could be better used for other purposes. This paper considers three common situations and offers advice for dealing with each. First, an entire population of records is available for an institution. We argue that, even though all records have been collected, the use of inferential statistics and significance testing is both common and desirable. Second, because of limited resources or other factors, a sample of records needs to be drawn. We demonstrate how power analyses can be used to determine in advance how large the sample needs to be to achieve the study's goals. Third, the sample size may already be determined, either because the data have already been collected or because resources are limited. We show how power analyses c...

  6. [Scientometrics and bibliometrics of biomedical engineering periodicals and papers].

    Science.gov (United States)

    Zhao, Ping; Xu, Ping; Li, Bingyan; Wang, Zhengrong

    2003-09-01

    This investigation was made to reveal the current status, research trend and research level of biomedical engineering in Chinese mainland by means of scientometrics and to assess the quality of the four domestic publications by bibliometrics. We identified all articles of four related publications by searching Chinese and foreign databases from 1997 to 2001. All articles collected or cited by these databases were searched and statistically analyzed for finding out the relevant distributions, including databases, years, authors, institutions, subject headings and subheadings. The source of sustentation funds and the related articles were analyzed too. The results showed that two journals were cited by two foreign databases and five Chinese databases simultaneously. The output of Journal of Biomedical Engineering was the highest. Its quantity of original papers cited by EI, CA and the totality of papers sponsored by funds were higher than those of the others, but the quantity and percentage per year of biomedical articles cited by EI were decreased in all. Inland core authors and institutions had come into being in the field of biomedical engineering. Their research topics were mainly concentrated on ten subject headings which included biocompatible materials, computer-assisted signal processing, electrocardiography, computer-assisted image processing, biomechanics, algorithms, electroencephalography, automatic data processing, mechanical stress, hemodynamics, mathematical computing, microcomputers, theoretical models, etc. The main subheadings were concentrated on instrumentation, physiopathology, diagnosis, therapy, ultrasonography, physiology, analysis, surgery, pathology, method, etc.

  7. Growth rates of modern science: A bibliometric analysis

    CERN Document Server

    Bornmann, Lutz

    2014-01-01

    Many studies in information science have looked at the growth of science. In this study, we re-examine the question of the growth of science. To do this we (i) use current data up to publication year 2012 and (ii) analyse it across all disciplines and also separately for the natural sciences and for the medical and health sciences. Furthermore, the data are analysed with an advanced statistical technique (segmented regression analysis) which can identify specific segments with similar growth rates in the history of science. The study is based on two different sets of bibliometric data: (1) The number of publications held as source items in the Web of Science (WoS, Thomson Reuters) per publication year and (2) the number of cited references in the publications of the source items per cited reference year. We have looked at the rate at which science has grown since the mid-1600s. In our analysis we identified three growth phases in the development of science, which each led to growth rates tripling in compariso...

  8. Comparing simulated and theoretical sampling distributions of the U3 person-fit statistic

    NARCIS (Netherlands)

    Emons, W.H.M.; Meijer, R.R.; Sijtsma, K.

    2002-01-01

    The accuracy with which the theoretical sampling distribution of van der Flier's person-.t statistic U3 approaches the empirical U3 sampling distribution is affected by the item discrimination. A simulation study showed that for tests with a moderate or a strong mean item discrimination, the Type I

  9. The Comparability of the Statistical Characteristics of Test Items Generated by Computer Algorithms.

    Science.gov (United States)

    Meisner, Richard; And Others

    This paper presents a study on the generation of mathematics test items using algorithmic methods. The history of this approach is briefly reviewed and is followed by a survey of the research to date on the statistical parallelism of algorithmically generated mathematics items. Results are presented for 8 parallel test forms generated using 16…

  10. Evaluating the Instructional Efficacy of Computer-Mediated Interactive Multimedia: Comparing Three Elementary Statistics Tutorial Modules.

    Science.gov (United States)

    Gonzalez, Gerardo M.; Birch, Marc A.

    2000-01-01

    This study evaluated three tutorial modules, equivalent in content but different in mode of presentation, for introducing elementary statistics concepts. Fifty-seven college students participated in one of four randomly assigned conditions: paper-and-pencil, basic computerized, computerized multimedia, or control group. Participant evaluations…

  11. State of Business Statistics Education in MENA Region: A Comparative Study with Best Practices

    Science.gov (United States)

    Hijazi, Rafiq; Zoubeidi, Taoufik

    2017-01-01

    Purpose: The purpose of this study is to investigate the state of undergraduate business statistics education in the Middle East and North Africa (MENA) and assess its alignment with the best practices in equipping business graduates with the knowledge and skills demanded by the labor market. Design/methodology/approach: A survey of 108…

  12. Rain research with disdrometers: a bibliometric review

    Science.gov (United States)

    Fernandez-Raga, M.; Palencia, C.; Tomas, C.; Calvo, A. I.; Castro, A.; Fraile, R.

    2011-09-01

    This study analyses the research on disdrometers based on published studies. To do so, a wide data base of bibliographic references has been used: the Web of Science (published by Thomson Reuters). The search was carried out for all of the articles whose "TOPIC" was disdrometer. The more than 300 articles found were analysed according to various criteria: countries with research using disdrometers; publication dates; evolution of the number of articles; concepts studied and research lines followed in each article; and finally, a bibliometric analysis of the more than 60 journals where these articles have been published. Since 1963, there has been an increase in the number of articles published on disdrometers, which in the last 20 yr has been more than ten times higher than the increase in the number of articles on meteorology.

  13. Origins of Life Research: a Bibliometric Approach

    Science.gov (United States)

    Aydinoglu, Arsev Umur; Taşkın, Zehra

    2017-07-01

    This study explores the collaborative nature and interdisciplinarity of the origin(s) of life (OoL) research community. Although OoL research is one of the oldest topics in philosophy, religion, and science; to date there has been no review of the field utilizing bibliometric measures. A dataset of 5647 publications that are tagged as OoL, astrobiology, exobiology, and prebiotic chemistry is analyzed. The most prolific authors (Raulin, Ehrenfreund, McKay, Cleaves, Cockell, Lazcano, etc.), most cited scholars and their articles (Miller 1953, Gilbert 1986, Chyba & Sagan 1992, Wȁchtershȁuser 1988, etc.), and popular journals (Origins of Life and Evolution of Biospheres and Astrobiology) for OoL research are identified. Moreover, interdisciplinary research conducted through research networks, institutions (NASA, Caltech, University of Arizona, University of Washington, CNRS, etc.), and keywords & concepts (astrobiology, life, Mars, amino acid, prebiotic chemistry, evolution, RNA) are explored.

  14. Rain research with disdrometers: a bibliometric review

    Directory of Open Access Journals (Sweden)

    M. Fernandez-Raga

    2011-09-01

    Full Text Available This study analyses the research on disdrometers based on published studies. To do so, a wide data base of bibliographic references has been used: the Web of Science (published by Thomson Reuters. The search was carried out for all of the articles whose "TOPIC" was disdrometer. The more than 300 articles found were analysed according to various criteria: countries with research using disdrometers; publication dates; evolution of the number of articles; concepts studied and research lines followed in each article; and finally, a bibliometric analysis of the more than 60 journals where these articles have been published. Since 1963, there has been an increase in the number of articles published on disdrometers, which in the last 20 yr has been more than ten times higher than the increase in the number of articles on meteorology.

  15. Bibliometrics Course Offerings by Library and Information Science Programs in China

    Science.gov (United States)

    Xiao, Ming; Zhao, Dangzhi; Yin, Yali; Yu, Jia

    2016-01-01

    In this article, we report results from a survey of bibliometrics courses offered by LIS programs in mainland China. We found that more than 27% of Chinese LIS programs offer bibliometrics courses. The majority of these programs teach bibliometrics as 2- or 3-credit, required courses to both undergraduate and graduate students, indicating the…

  16. How Implementation of Bibliometric Practice Affects the Role of Academic Libraries

    Science.gov (United States)

    Åström, Fredrik; Hansson, Joacim

    2013-01-01

    This article discusses potential consequences of implementing bibliometrics as an institutionalized practice in academic libraries. Results are reported from a survey among libraries in Sweden with organized bibliometric activities. Incorporating bibliometric activities is one way of redefining and widening the role of the library. Implementation…

  17. Editorial for the Bibliometric-enhanced Information Retrieval Workshop at ECIR 2014

    NARCIS (Netherlands)

    Mayr, Philipp; Schaer, Philipp; Scharnhorst, Andrea; Mutschke, Peter

    2014-01-01

    This first "Bibliometric-enhanced Information Retrieval" (BIR 2014) workshop aims to engage with the IR community about possible links to bibliometrics and scholarly communication. Bibliometric techniques are not yet widely used to enhance retrieval processes in digital libraries, although they offe

  18. STATISTICAL LIMITATIONS IN TIMING AND RESTRICTIONS OF COMPARABILITY IN ADDRESSING FOREIGN DIRECT INVESTMENT (FDI, IN ROMANIA’S MARKET ECONOMY

    Directory of Open Access Journals (Sweden)

    Gheorghe SĂVOIU

    2012-03-01

    Full Text Available This paper analyzes some statistical limitations in timing and the most important methodological restrictions specific to the process of practical modelling of foreign direct investments (FDI. After a brief introduction about the need for comparability of statistical data and practical implementation, the following section describes the complex process of econometric FDI modeling, the main restrictions that had to be overcome were related to ensuring comparability, selecting only one fairly substantial database for macroeconomic indicators, and building a database for the country rating by statistically converting qualitative information into quantitative information, the option for two types of data sets or series (extenden and small, due to the level of FDI, and the different order of magnitude of FDI values, relatively homogeneous since 1997, and not since 1990. The fi nal section of conclusion ends the article with some final remarks about the specific solution used in modeling process.

  19. Urban heat island research from 1991 to 2015: a bibliometric analysis

    Science.gov (United States)

    Huang, Qunfang; Lu, Yuqi

    2017-01-01

    A bibliometric analysis based on the Science Citation Index-Expanded (SCI-Expanded) database from the Web of Science was performed to review urban heat island (UHI) research from 1991 to 2015 and statistically assess its developments, trends, and directions. In total, 1822 papers published in 352 journals over the past 25 years were analyzed for scientific output; citations; subject categories; major journals; outstanding keywords; and leading countries, institutions, authors, and research collaborations. The number of UHI-related publications has continuously increased since 1991. Meteorology atmospheric sciences, environmental sciences, and construction building technology were the three most frequent subject categories. Building and Environment, International Journal of Climatology, and Theoretical and Applied Climatology were the three most popular publishing journals. The USA and China were the two leading countries in UHI research, contributing 49.56% of the total articles. Chinese Academy of Science, Arizona State University, and China Meteorological Administration published the most UHI articles. Weng QH and Santamouris M were the two most prolific authors. Author keywords were classified into four major groups: (1) research methods and indicators, e.g., remote sensing, field measurement, and models; (2) generation factors, e.g., impervious urban surfaces, urban geometry, waste heat, vegetation, and pollutants; (3) environmental effects, e.g., urban climate, heat wave, ecology, and pollution; and (4) mitigation and adaption strategies, e.g., roof technology cooling, reflective cooling, vegetation cooling, and urban geometry cooling. A comparative analysis of popular issues revealed that UHI determination (intensity, heat source, supporting techniques) remains the central topic, whereas UHI impacts and mitigation strategies are becoming the popular issues that will receive increasing scientific attention in the future. Modeling will continue to be the

  20. Turbulence in magnetized plasmas and financial markets: comparative study of multifractal statistics

    Science.gov (United States)

    Budaev, V. P.

    2004-12-01

    The turbulence in magnetized plasma and financial data of Russian market have been studied in terms of the multifractal formalism revisited with wavelets. The multifractal formalism based on wavelet calculations allows one to study the scaling properties of turbulent fluctuations. It is observed that both plasma edge turbulence in fusion devices and Russian financial markets demonstrate multifractal statistics, i.e., the scaling behaviour of absolute moments is described by a convex function. Multifractality parameter defined in multiplicative cacade model, seems to be of the same magnitude for the plasma and financial time series considered in this paper.

  1. Statistical means to enhance the comparability of data within a pooled analysis of individual data in neurobehavioral toxicology

    DEFF Research Database (Denmark)

    Meyer-Baron, Monika; Schäper, Michael; Knapp, Guido

    2011-01-01

    approaches the comparability of data might be increased. An analysis of individual data on the neurobehavioral impact of manganese (Mn) exemplifies challenges and effects of a multilevel statistical procedure. Confounding from individual-level and study-level covariates was shown by analyses of variance...

  2. Comparative urine analysis by liquid chromatography-mass spectrometry and multivariate statistics : Method development, evaluation, and application to proteinuria

    NARCIS (Netherlands)

    Kemperman, Ramses F. J.; Horvatovich, Peter L.; Hoekman, Berend; Reijmers, Theo H.; Muskiet, Frits A. J.; Bischoff, Rainer

    2007-01-01

    We describe a platform for the comparative profiling of urine using reversed-phase liquid chromatography-mass spectrometry (LC-MS) and multivariate statistical data analysis. Urinary compounds were separated by gradient elution and subsequently detected by electrospray Ion-Trap MS. The lower limit o

  3. Using Relative Statistics and Approximate Disease Prevalence to Compare Screening Tests.

    Science.gov (United States)

    Samuelson, Frank; Abbey, Craig

    2016-11-01

    Schatzkin et al. and other authors demonstrated that the ratios of some conditional statistics such as the true positive fraction are equal to the ratios of unconditional statistics, such as disease detection rates, and therefore we can calculate these ratios between two screening tests on the same population even if negative test patients are not followed with a reference procedure and the true and false negative rates are unknown. We demonstrate that this same property applies to an expected utility metric. We also demonstrate that while simple estimates of relative specificities and relative areas under ROC curves (AUC) do depend on the unknown negative rates, we can write these ratios in terms of disease prevalence, and the dependence of these ratios on a posited prevalence is often weak particularly if that prevalence is small or the performance of the two screening tests is similar. Therefore we can estimate relative specificity or AUC with little loss of accuracy, if we use an approximate value of disease prevalence.

  4. Do they agree? Bibliometric evaluation vs informed peer review in the Italian research assessment exercise

    CERN Document Server

    Alberto, Baccini

    2015-01-01

    During the Italian research assessment exercise, the national agency ANVUR performed an experiment to assess agreement between grades obtained through informed peer review (IR) and bibliometrics. A sample was evaluated by using both methods and concordance was analyzed by weighted Cohen's kappas. According to ANVUR results indicated an overall "more than adequate" agreement which "fully justifies" the choice of using jointly both techniques in the assessment. However, according to available statistical guidelines for kappa values, the degree of agreement has to be interpreted, for all research fields, as poor or, in a few cases, as, at most, fair. The only notable exception is Area 13 (economics and statistics) and its sub-areas, showing moderate agreement. However, a statistical meta-analysis rejects the hypothesis that kappas from Area 13 share the same distribution as those from the other areas. In fact, a scrutiny of the experiment protocol adopted by the Area 13 panel highlights substantial modifications...

  5. The 100 most-cited original articles in cardiac computed tomography: A bibliometric analysis.

    Science.gov (United States)

    O'Keeffe, Michael E; Hanna, Tarek N; Holmes, Davis; Marais, Olivia; Mohammed, Mohammed F; Clark, Sheldon; McLaughlin, Patrick; Nicolaou, Savvas; Khosa, Faisal

    2016-01-01

    Bibliometric analysis is the application of statistical methods to analyze quantitative data about scientific publications. It can evaluate research performance, author productivity, and manuscript impact. To the best of our knowledge, no bibliometric analysis has focused on cardiac computed tomography (CT). The purpose of this paper was to compile a list of the 100 most-cited articles related to cardiac CT literature using Scopus and Web of Science (WOS). A list of the 100 most-cited articles was compiled by order of citation frequency, as well a list of the top 10 most-cited guideline and review articles and the 20 most-cited articles of the years 2014-2015. The database of 100 most-cited articles was analyzed to identify characteristics of highly cited publications. For each manuscript, the number of authors, study design, size of patient cohort and departmental affiliations were cataloged. The 100 most-cited articles were published from 1990 to 2012, with the majority (53) published between 2005 and 2009. The total number of citations varied from 3354 to 196, and the number of citations per year varied from 9.5 to 129.0 with a median and mean of 30.9 and 38.7, respectively. The majority of publications had a study patients sample size of 200 patients or less. The USA and Germany were the nations with the highest number of frequently cited publications. This bibliometric analysis provides insights on the most-cited articles published on the subject of cardiac CT and calcium volume, thus helping to characterize the field and guide future research.

  6. Comparing statistical and process-based flow duration curve models in ungauged basins and changing rain regimes

    Science.gov (United States)

    Müller, M. F.; Thompson, S. E.

    2016-02-01

    The prediction of flow duration curves (FDCs) in ungauged basins remains an important task for hydrologists given the practical relevance of FDCs for water management and infrastructure design. Predicting FDCs in ungauged basins typically requires spatial interpolation of statistical or model parameters. This task is complicated if climate becomes non-stationary, as the prediction challenge now also requires extrapolation through time. In this context, process-based models for FDCs that mechanistically link the streamflow distribution to climate and landscape factors may have an advantage over purely statistical methods to predict FDCs. This study compares a stochastic (process-based) and statistical method for FDC prediction in both stationary and non-stationary contexts, using Nepal as a case study. Under contemporary conditions, both models perform well in predicting FDCs, with Nash-Sutcliffe coefficients above 0.80 in 75 % of the tested catchments. The main drivers of uncertainty differ between the models: parameter interpolation was the main source of error for the statistical model, while violations of the assumptions of the process-based model represented the main source of its error. The process-based approach performed better than the statistical approach in numerical simulations with non-stationary climate drivers. The predictions of the statistical method under non-stationary rainfall conditions were poor if (i) local runoff coefficients were not accurately determined from the gauge network, or (ii) streamflow variability was strongly affected by changes in rainfall. A Monte Carlo analysis shows that the streamflow regimes in catchments characterized by frequent wet-season runoff and a rapid, strongly non-linear hydrologic response are particularly sensitive to changes in rainfall statistics. In these cases, process-based prediction approaches are favored over statistical models.

  7. Psychophysical Map Stability in Bilateral Sequential Cochlear Implantation: Comparing Current Audiology Methods to a New Statistical Definition.

    Science.gov (United States)

    Domville-Lewis, Chloe; Santa Maria, Peter L; Upson, Gemma; Chester-Browne, Ronel; Atlas, Marcus D

    2015-01-01

    The purpose of this study was to establish a statistical definition for stability in cochlear implant maps. Once defined, this study aimed to compare the duration taken to achieve a stable map in first and second implants in patients who underwent sequential bilateral cochlear implantation. This article also sought to evaluate a number of factors that potentially affect map stability. A retrospective cohort study of 33 patients with sensorineural hearing loss who received sequential bilateral cochlear implantation (Cochlear, Sydney, Australia), performed by the senior author. Psychophysical parameters of hearing threshold scores, comfort scores, and the dynamic range were measured for the apical, medial, and basal portions of the cochlear implant electrode at a range of intervals postimplantation. Stability was defined statistically as a less than 10% difference in threshold, comfort, and dynamic range scores over three consecutive mapping sessions. A senior cochlear implant audiologist, blinded to implant order and the statistical results, separately analyzed these psychophysical map parameters using current assessment methods. First and second implants were compared for duration to achieve stability, age, gender, the duration of deafness, etiology of deafness, time between the insertion of the first and second implant, and the presence or absence of preoperative hearing aids were evaluated and its relationship to stability. Statistical analysis included performing a two-tailed Student's t tests and least squares regression analysis, with a statistical significance set at p ≤ 0.05. There was a significant positive correlation between the devised statistical definition and the current audiology methods for assessing stability, with a Pearson correlation coefficient r = 0.36 and a least squares regression slope (b) of 0.41, df(58), 95% confidence interval 0.07 to 0.55 (p = 0.004). The average duration from device switch on to stability in the first implant was 87

  8. Virology research in a Latin American developing country: a bibliometric analysis of virology in Colombia (2000-2013).

    Science.gov (United States)

    Ruiz-Saenz, Julian; Martinez-Gutierrez, Marlen

    2015-11-30

    Bibliometric analysis demonstrates that the virology research in Latin America has increased. For this reason, the objective of this study was to evaluate Colombian publications on viruses and viral diseases in indexed journals during the period from 2000 to 2013. The bibliographic data were collected from MedLine, SciELO, LILACS and Scopus databases. The database was constructed in Excel descriptive statistics. The SCImago Journal Rank (SJR) was evaluated using the SCImago Journal & Country Rank in 2013 and was used as an indicator of the quality of the journals used by the Colombian researchers. The total number of papers published was 711, of which 40.4% were published in local journals, and 59.6% were published in foreign journals. Most (89.2%) were original papers. Moreover, 34.2% of the papers were published in collaboration with international researchers, with the United States being the most represented. Of the journals used, 85.6% had an SJR, and 14.4% did not. The median SJR of the papers was 0.789, and the median of the papers with international collaborators was higher compared to the SJR of the papers without international collaboration. Papers were most frequently published in journals whose categories were medicine (miscellaneous), virology, and infectious diseases. The viruses that appeared in the papers more frequently were HIV, dengue, and papillomavirus. This study provides data for use in research, health planning, and policy analysis as it relates to virology in Colombia and other developing Latin American countries.

  9. Bibliometric analysis of rheumatology research in the Arab countries.

    Science.gov (United States)

    Bayoumy, Karim; MacDonald, Ross; Dargham, Soha Roger; Arayssi, Thurayya

    2016-08-08

    The Arab world has seen an increase in the burden of musculoskeletal diseases. No bibliometric studies have characterized rheumatology research in the Arab world. This study evaluates the productivity and impact of rheumatology research in the Arab world. We searched the Web of Science Core Collection for rheumatology publications, from 1976 to 2014, for each of the Arab League (AL) countries, North America, Europe and Asia. For the AL countries, the overall trend of publications and citations was analyzed, while considering the paper type and collaborations. The AL countries published 944 rheumatology papers over the period studied. The number of publications increased by a factor of 2.77 (95 % CI, 2.75-2.78) each decade, and citations increased by a factor of 2.36 (95 % CI, 0.96-5.82). The absolute number of papers included in the top-10 rheumatology journals remained constant but the proportion decreased. Papers involving collaboration among AL countries were found to increase over time. Overall, the AL countries lag in research productivity and impact compared to other regions. Three countries are responsible for the majority of publications, while four countries receive the majority of citations.

  10. A Bibliometric Analysis of Publications on Pluripotent Stem Cell Research

    Directory of Open Access Journals (Sweden)

    Changshuan L. Lin

    2015-04-01

    Full Text Available Objective: Human pluripotent stem cells are self-renewing cells with the ability to differentiate into a variety of cells and are viewed to have great potential in the field of regenerative medicine. Research in pluripotent stem cells holds great promise for patient specific therapy in various diseases. In this study, pluripotent stem cell articles published from 1991 to 2012 were screened and retrieved from Science Citation Index Expanded (SCI-EXPANDED. Materials and Methods: In this retrospective study, the publication trend, citation trends for top articles, distributions of journals and Web of Science categories were analyzed. Five bibliometric indicators including total articles, independent articles, collaborative articles, first author articles, and corresponding author articles were applied to compare publications between countries and institutions. Results: The impact of top articles changed from year to year. Top cited articles in previous publication years were not the same as recent years. "Induced pluripotent stem cell (s" and "embryonic stem cell (s" were the most used author keywords in pluripotent stem cell research. In addition, the winner of the Nobel Prize in physiology or medicine in 2012, Prof. Shinya Yamanaka, published four of the top ten most frequently cited articles. Conclusion: The comprehensive analysis of highly cited articles in the stem cell field could identify milestones and important contributors, giving a historic perspective on scientific progress.

  11. The Company That Words Keep: Comparing the Statistical Structure of Child- versus Adult-Directed Language

    Science.gov (United States)

    Hills, Thomas

    2013-01-01

    Does child-directed language differ from adult-directed language in ways that might facilitate word learning? Associative structure (the probability that a word appears with its free associates), contextual diversity, word repetitions and frequency were compared longitudinally across six language corpora, with four corpora of language directed at…

  12. The Company That Words Keep: Comparing the Statistical Structure of Child- versus Adult-Directed Language

    Science.gov (United States)

    Hills, Thomas

    2013-01-01

    Does child-directed language differ from adult-directed language in ways that might facilitate word learning? Associative structure (the probability that a word appears with its free associates), contextual diversity, word repetitions and frequency were compared longitudinally across six language corpora, with four corpora of language directed at…

  13. Inadequate statistical power of published comparative cohort studies on ventilator-associated pneumonia to detect mortality differences.

    Science.gov (United States)

    Falagas, Matthew E; Kouranos, Vasilios D; Michalopoulos, Argyris; Rodopoulou, Sophia P; Athanasoulia, Anastasia P; Karageorgopoulos, Drosos E

    2010-02-15

    Comparative cohort studies are often conducted to identify novel therapeutic strategies or prognostic factors for ventilator-associated pneumonia (VAP). We aimed to evaluate the power of such studies to provide clinically and statistically significant conclusions with regard to mortality differences. We searched in PubMed and Scopus for comparative cohort studies that evaluated mortality in patients with VAP. We calculated the central estimates and corresponding 95% confidence intervals (CIs) for mortality differences between compared patient groups. We also calculated the statistical power of the included studies to detect a difference in mortality that corresponds to a risk ratio of 0.80. We identified 39 (20 prospective) comparative cohort studies on VAP as eligible for inclusion in this analysis. The median absolute risk difference in mortality between compared groups was 10% (interquartile range [IQR], 5%-18%), and the median width of the 95% CI of the absolute risk difference in mortality was 34% (IQR, 28%-42.5%). The median power of the included studies to detect a risk ratio for mortality of 0.80 was 14.7% (IQR, 10.6%-21.8%). There is considerable uncertainty around the central estimate of comparative cohort studies on VAP with regard to mortality differences. For a wiser use of resources allocated to research, we emphasize the need to conduct cohort studies with larger sample size so that potential differences between the compared groups are more likely to be shown.

  14. Comparative Analysis of PSO and GA in Geom-Statistical Character Features Selection for Online Character Recognition

    Directory of Open Access Journals (Sweden)

    Fenwa O.D

    2015-08-01

    Full Text Available Online handwriting recognition today has special interest due to increased usage of the hand held devices and it has become a difficult problem because of the high variability and ambiguity in the character shapes written by individuals. One major problem encountered by researchers in developing character recognition system is selection of efficient features (optimal features. In this paper, a feature extraction technique for online character recognition system was developed using hybrid of geometrical and statistical (Geom-statistical features. Thus, through the integration of geometrical and statistical features, insights were gained into new character properties, since these types of features were considered to be complementary. Several optimization techniques have been used in literature for feature selection in character recognition such as; Ant Colony Optimization Algorithm (ACO, Genetic Algorithm (GA, Particle Swarm Optimization (PSO and Simulated Annealing but comparative analysis of GA and PSO in online character has not been carried out. In this paper, a comparative analysis of performance was made between the GA and PSO in optimizing the Geom-statistical features in online character recognition using Modified Optical Backpropagation (MOBP as classifier. Simulation of the system was done and carried out on Matlab 7.10a. The results generated show that PSO is a well-accepted optimization algorithm in selection of optimal features as it outperforms the GA in terms of number of features selected, training time and recognition accuracy.

  15. Bibliometric performance analysis of publications from Danish researchers linked to FP6 and FP7

    DEFF Research Database (Denmark)

    Schneider, Jesper Wiborg; Ryan, Thomas Kjeldager

    2015-01-01

    This chapter presents an analysis29 of the impact of Danish scientific publications that were the result of FP6 or FP7 funding. The purpose is to gain an insight into the scientific impact researchers can achieve when participating in FP6 and FP7. In order to look at impact we have identified...... citations belonging to scientific publications with at least one Danish author. This is done using data from the international citation database Web of Science (WoS). These results are compared to the results of the bibliometric analyses from the previous evaluations of the Danish National Research...

  16. Bibliometric analysis of energy research at the world level and benchmarking of CANMET energy

    Energy Technology Data Exchange (ETDEWEB)

    Archambault, E.; Cote, G.

    2009-02-15

    CANMET, part of Natural Resources Canada, is a Canadian organization specializing in energy research, working on the development of renewable energy technologies and processes. Science Metrix conducted a study for Natural Resources Canada in 2009, resulting in the preparation of a report. In this document, Science-Metrix analyzes the involvement in energy research in different countries and at the world level and compares the scientific contribution of CANMET to that of other organizations around the world specialized in the same field. The study is based on the contents of papers prepared by CANMET researchers published between 1996 and 2007 and on the definitions of several bibliometric indicators. 1 tab., 15 figs.

  17. Bibliometric analysis of the 'Electronic Library' journal (2000-2010

    Directory of Open Access Journals (Sweden)

    Akhtar Hussain

    2011-06-01

    Full Text Available This study aims to present a bibliometric analysis of the Electronic Library journal, the aim being to offer a summary of research activity in library and information science and characterize its most important aspects. The paper analyzes a bibliometric study of 578 articles were published during the period January 1, 2000 to December 31, 2010 in the Electronic Library journal. The paper covers the bibliometric analyses of year-wise distribution of articles, category-wise classification of papers, subject-wise distribution of articles, authorship patterns, and institutions-wise distribution of contributions. Special issues of the Electronic Library brought out during 2000-2010, and prolific authors during 2000 to 2010 have been analyzed.

  18. Beyond bibliometrics harnessing multidimensional indicators of scholarly impact

    CERN Document Server

    Sugimoto, Cassidy R

    2014-01-01

    Bibliometrics has moved well beyond the mere tracking of bibliographic citations. The web enables new ways to measure scholarly productivity and impact, making available tools and data that can reveal patterns of intellectual activity and impact that were previously invisible: mentions, acknowledgments, endorsements, downloads, recommendations, blog posts, tweets. This book describes recent theoretical and practical advances in metrics-based research, examining a variety of alternative metrics -- or "altmetrics" -- while also considering the ethical and cultural consequences of relying on metrics to assess the quality of scholarship. Once the domain of information scientists and mathematicians, bibliometrics is now a fast-growing, multidisciplinary field that ranges from webometrics to scientometrics to influmetrics. The contributors to Beyond Bibliometrics discuss the changing environment of scholarly publishing, the effects of open access and Web 2.0 on genres of discourse, novel analytic methods, and the e...

  19. Looking for landmarks: the role of expert review and bibliometric analysis in evaluating scientific publication outputs.

    Directory of Open Access Journals (Sweden)

    Liz Allen

    Full Text Available OBJECTIVE: To compare expert assessment with bibliometric indicators as tools to assess the quality and importance of scientific research papers. METHODS AND MATERIALS: Shortly after their publication in 2005, the quality and importance of a cohort of nearly 700 Wellcome Trust (WT associated research papers were assessed by expert reviewers; each paper was reviewed by two WT expert reviewers. After 3 years, we compared this initial assessment with other measures of paper impact. RESULTS: Shortly after publication, 62 (9% of the 687 research papers were determined to describe at least a 'major addition to knowledge' -6 were thought to be 'landmark' papers. At an aggregate level, after 3 years, there was a strong positive association between expert assessment and impact as measured by number of citations and F1000 rating. However, there were some important exceptions indicating that bibliometric measures may not be sufficient in isolation as measures of research quality and importance, and especially not for assessing single papers or small groups of research publications. CONCLUSION: When attempting to assess the quality and importance of research papers, we found that sole reliance on bibliometric indicators would have led us to miss papers containing important results as judged by expert review. In particular, some papers that were highly rated by experts were not highly cited during the first three years after publication. Tools that link expert peer reviews of research paper quality and importance to more quantitative indicators, such as citation analysis would be valuable additions to the field of research assessment and evaluation.

  20. Social networks and cooperation: a bibliometric study

    Directory of Open Access Journals (Sweden)

    Ana Paula Lopes

    2013-05-01

    Full Text Available The social network analysis involves social and behavioral science. The decentralization of productive activities, such as the formation of "network organizations" as a result of downsizing of large corporate structures of the past, marked by outsoucing and formation of alliances, shows the importance of this theme. The main objective of this paper is to analyze the theory of cooperation and social networks over a period of 24 years. For this, was performed a bibliometric study with content analysis. The database chosen for the initial sample search was ISI Web of Science. The search topics were “social network” and “cooperation”. Were analyzed 97 articles and their references, through networks of citations. The main identified research groups dealing with issues related to trust, strategic alliances, natural cooperation, game theory, social capital, intensity of interaction, reciprocity and innovation. It was found that the publications occurred in a large number of journals, which indicates that the theme is multidisciplinary, and only five journals published at least three articles. Although the first publication has occurred in 1987, was from 2006 that the publications effectively increased. The areas most related to the theme of the research were performance, evolution, management, graphics, model and game theory.

  1. Bibliometric study of the reverse salient concept

    Directory of Open Access Journals (Sweden)

    Ozgur Dedehayir

    2009-12-01

    Full Text Available In the development of technological systems the focus of system analysis is often on the sub-system that delivers insufficient performance – i.e. the reverse salient – which subsequently limits the performance of the system in its entirety. The reverse salient is therefore a useful concept in the study of technological systems and while the literature holds numerous accounts of its use, it is not known how often, in which streams of literature, and in what type of application the concept has been utilized by scholars since its introduction by Thomas Hughes in 1983. In this paper we employ bibliometric citation analysis between 1983 and 2008, inclusively, to study the impact of the reverse salient concept in the literature at large as well as study the dissemination of the concept into different fields of research. The study results show continuously growing number of concept citations in the literature over time as well as increasing concept diffusion into different research areas. The analysis of article contents additionally suggests the opportunity for scholars to engage in deeper conceptual application. Finally, the continuing increase in the number of citations highlights the importance of the reverse salient concept to scholars and practitioners.

  2. Bibliometric analysis of the orthopedic literature.

    Science.gov (United States)

    Hui, Zhaoyang; Yi, Zhongmei; Peng, Jun

    2013-10-01

    Bibliometric indicators are used to assess research performance. The goal of this study was to explore publication output to construct a picture of orthopedics that may be beneficial to researchers and orthopedic specialists. All orthopedics articles published in 61 journals from 2000 to 2011 were retrieved from the Science Citation Index Expanded database. The numbers of articles, citations, authors, institutions, and journals were analyzed and subjected to quantitative and qualitative comparisons. The number of published orthopedics articles increased between 2000 and 2011. Articles published by authors from the United States always ranked first in number, although the United States' share is decreasing in the world literature. Authors from the United States published the most-cited articles and the most articles in journals with top-10 impact factors; moreover, the United States also had the greatest share of experts and highly ranked institutions. The United Kingdom, Germany, and Japan were always within the world's top 4 in terms of numbers of articles and citations. The shares of Germany, South Korea, and China among total orthopedics articles increased, especially that of China. In 2011, China ranked the fifth in the world, with its world share increasing from 0.64% in 2000 to 5.05% in 2011. However, China lags behind in average citations per article, top research institutions, and most prolific authors. According to the total citations per article, the University of Pittsburgh, Harvard University, and the Hospital for Special Surgery were the most prolific institutions.

  3. Hailpad-based research: A bibliometric review

    Science.gov (United States)

    Palencia, Covadonga; Castro, Amaya; Giaiotti, Dario; Stel, Fulvio; Vinet, Freddy; Fraile, Roberto

    This paper is an overview of hailpad research from its origin until today using as a search criterion the bibliographic references on the subject in the Web of Science database (ISI). The search was carried out on 1st September 2008. Among the more than 3·10 7 scientific documents included in the Science Citation Index Expanded (SCI-EXPANDED) from 1945 to the present, the search engine identified 41 containing the word "hailpad*" (the asterisk is a wildcard for any letter or group of letters). The results have been analyzed according to various criteria: countries with hailpad networks or studies on hailpads; date of the first article; evolution of the number of articles per decade; concepts studied and research lines followed in each article; and finally, a bibliometric analysis of the journals where these articles have been published. It was found that 70% of the articles on hailpads were published in 2 journals: Journal of Applied Meteorology and Atmospheric Research. These two journals also concentrate most of the citations. The number of articles on hailpads and the documents that cite them have grown steadily, and it is expected to grow still further in the present decade if we take into account the trends found.

  4. Bibliometrics of electronic journals in information science

    Directory of Open Access Journals (Sweden)

    Donald T. Hawkins

    2001-01-01

    Full Text Available The bibliometric characteristics of electronic journals (e-journals covering the field of information science have been studied. Twenty-eight e-journals were identified and ranked by number of articles on the subject they published. A Bradford plot revealed that the core is not well developed yet, but it will likely contain six journals. The publication of information science articles in e-journals began modestly in 1995 with 26 articles, but it has risen to approximately 250 articles per year. The most prolific authors are identified. The vast majority of them are located in the United States or United Kingdom. Only 26 articles have authors from more than one country, showing that electronic technology has not yet strongly influenced international collaboration. About 2/3 of the articles originate in academic institutions. Common topics of e-journal articles in information science include electronic information, electronic publishing, virtual (digital libraries, information search and retrieval, and use of the Internet. Seven online databases cover these e-journals; Information Science Abstracts is the only one to cover all 28 journals, and it has the highest number of abstracts from them - over 1,100.

  5. The Multinational Corporations - A comparative statistical approach in Romania and Serbia -

    Directory of Open Access Journals (Sweden)

    Gheorghe SĂVOIU

    2010-11-01

    Full Text Available The originality of this paper consists in a comparative approach to the typologies of the financial facilities meant to attract multinational corporations, either in a country that is a member of the European Union, such as Romania, or in a non-member country, like today’s Serbia. The authors have focused on the idea the multinational corporations are a major factor of developmentfor Eastern European countries, in general. Finally, the social corporative responsibility has been useful to the communities in these countries, but still remains a theoretical idea. The financial facilities and opportunities provided by the small economies are not yet compensated through a social equivalent, either inside, or outside the European Union area, for most of the host countriesand economies placed in Eastern Europe.The authors have focused on two characteristic corporationsAutomobile Dacia from Romania and Zastava Automobile, from Serbia.

  6. Statistical magnetometry on isolated NiCo nanowires and nanowire arrays: a comparative study

    Science.gov (United States)

    Sergelius, Philip; Garcia Fernandez, Javier; Martens, Stefan; Zocher, Michael; Böhnert, Tim; Vega Martinez, Victor; de la Prida, Victor Manuel; Görlitz, Detlef; Nielsch, Kornelius

    2016-04-01

    The first-order reversal curve (FORC) method can be used to extract information about the interaction and switching field distribution of ferromagnetic nanowire arrays, yet it remains challenging to acquire reliable values. Within ordered pores of anodic alumina templates we electrochemically synthesize eight different Ni x Co1-x samples with x varying between 0.05 and 1. FORC diagrams are acquired using vibrating sample magnetometry. By dissolving the template and using the magneto-optical Kerr effect, we measure the hysteresis loops of up to 100 different and isolated nanowires for each sample to gain precise information about the intrinsic switching field distribution. Values of the interaction field are extracted from a deshearing of the major hysteresis loop. We present a comparative study between all methods in order to evaluate and reinforce current FORC theory with experimental findings.

  7. Comparative Study of Statistical Skin Detection Algorithms for Sub-Continental Human Images

    CERN Document Server

    Tabassum, Mirza Rehenuma; Kamal, Md Mostafa; Muctadir, Hossain Muhammad; Ibrahim, Muhammad; Shakir, Asif Khan; Imran, Asif; Islamm, Saiful; Rabbani, Md Golam; Khaled, Shah Mostafa; Islam, Md Saiful; Begum, Zerina; 10.3923/itj.2010.811.817

    2010-01-01

    Object detection has been a focus of research in human-computer interaction. Skin area detection has been a key to different recognitions like face recognition, human motion detection, pornographic and nude image prediction, etc. Most of the research done in the fields of skin detection has been trained and tested on human images of African, Mongolian and Anglo-Saxon ethnic origins. Although there are several intensity invariant approaches to skin detection, the skin color of Indian sub-continentals have not been focused separately. The approach of this research is to make a comparative study between three image segmentation approaches using Indian sub-continental human images, to optimize the detection criteria, and to find some efficient parameters to detect the skin area from these images. The experiments observed that HSV color model based approach to Indian sub-continental skin detection is more suitable with considerable success rate of 91.1% true positives and 88.1% true negatives.

  8. Bibliometric analysis of health services research in otolaryngology journals.

    Science.gov (United States)

    Sun, Gordon H

    2012-11-01

    Determine current health services research (HSR) publication trends in major general otolaryngology journals. Bibliometric analysis. All main issues of 8 high-impact general-interest otolaryngology journals published worldwide in 2002, 2005, 2008, and 2011 were searched for HSR-related publications. To qualify as HSR, the abstract of the article must discuss access to care, cost, delivery of care, financing, health organizational or system issues, quality of care, resource utilization, and/or health outcomes. Otolaryngology topics were classified as general, pediatrics, oncology, otology and neurotology, sleep disorders, sinonasal disease, facial plastics, and/or laryngology. Other key measures included study authorship and external sponsorship or mechanism of support. Of 5958 total articles, 449 (7.5%) qualified as HSR. There was a statistically significant increase in the number of HSR publications across all journals from 2002 to 2011 (P research (337, 75.1%) was the most common type of HSR being published. The most common subject was oncology (112, 24.9%), whereas the least represented was trauma and facial plastics (4, 0.9%). First and corresponding authors were based in 31 countries, although the United States was the predominant country of origin. Nearly 95% of HSR articles in the current sample demonstrated multidisciplinary authorship. An estimated 22.9% of first authors and 17.8% of corresponding authors were female. Two-thirds of HSR publications reported no external sponsor, whereas the remainder was supported most commonly by philanthropy and hospital-based sources. Health services research is an international, multidisciplinary field of inquiry with an increasing presence in major otolaryngology journals.

  9. A unified approach to mapping and clustering of bibliometric networks

    CERN Document Server

    Waltman, Ludo; Noyons, Ed C M

    2010-01-01

    In the analysis of bibliometric networks, researchers often use mapping and clustering techniques in a combined fashion. Typically, however, mapping and clustering techniques that are used together rely on very different ideas and assumptions. We propose a unified approach to mapping and clustering of bibliometric networks. We show that the VOS mapping technique and a weighted and parameterized variant of modularity-based clustering can both be derived from the same underlying principle. We illustrate our proposed approach by producing a combined mapping and clustering of the most frequently cited publications that appeared in the field of information science in the period 1999-2008.

  10. Bibliometric Analysis of the Field of Entrepreneur Formation

    Directory of Open Access Journals (Sweden)

    Viviana Virgen Ortiz

    2014-12-01

    Full Text Available This work presents the results of a bibliometric analysis in the field of entrepreneur formation, which permit conducting a diagnosis of the evolution and current state of the theme. The methodology employed consists in the construction and subsequent analysis of quantity and quality bibliometric indicators, as well as an analysis of the topological structure of the networks of authors, observing its temporal evolution during the interval between 2003 and 2013. As a result, a growing field is found characterized by scarce citations among the authors, lack of integration among the researchers, and absence of development based on support disciplines

  11. Human Centred Design: a bibliometric overview based on Science Direct

    OpenAIRE

    Lucas José Garcia; Giselle Schmidt Alves Díaz Merino; Susana Cristina Domenech; Eugenio Andres Díaz Merino; Adilson Luiz Pinto

    2016-01-01

    This article aims to realize a bibliometric review on Science Direct to create a outlook about Human Centred Design in order to identify the most significant authors, journals and key-words as well as the most recurrent denomination about the subject. The method employed consist of application of three classical bibliometric laws: the Inverse Square Law of Lotka; the Bradford’s Law of Scattering and; The frequency law of words in a text of Zipf. The results indicate that the subject is not a ...

  12. Bibliometrics of NIHR HTA monographs and their related journal articles.

    Science.gov (United States)

    Royle, Pamela; Waugh, Norman

    2015-02-18

    A bibliometric analysis of the UK National Institute for Health Research (NIHR) Health Technology Assessment (HTA) monographs and their related journal articles by: (1) exploring the differences in citations to the HTA monographs in Google Scholar (GS), Scopus and Web of Science (WoS), and (2) comparing Scopus citations to the monographs with their related journal articles. A study of 111 HTA monographs published in 2010 and 2011, and their external journal articles. Citations to the monographs in GS, Scopus and WoS, and to their external journal articles in Scopus. The number of citations varied among the three databases, with GS having the highest and WoS the lowest; however, the citation-based rankings among the databases were highly correlated. Overall, 56% of monographs had a related publication, with the highest proportion for primary research (76%) and lowest for evidence syntheses (43%). There was a large variation in how the monographs were cited, compared to journal articles, resulting in more frequent problems, with unlinked citations in Scopus and WoS. When comparing differences in the number of citations between monograph publications with their related journal articles from the same project, we found that monographs received more citations than their journal articles for evidence syntheses and methodology projects; by contrast, journal articles related to primary research monographs were more highly cited than their monograph. The numbers of citations to the HTA monographs differed considerably between the databases, but were highly correlated. When a HTA monograph had a journal article from the same study, there were more citations to the journal article for primary research, but more to the monographs for evidence syntheses. Citations to the related journal articles were more reliably recorded than citations to the HTA monographs. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please

  13. Bibliometric Analysis of the Subject Distribution-based Papers in Information Stu;dies in China%基于主题分布的我国情报学文献计量分析

    Institute of Scientific and Technical Information of China (English)

    乔文明; 索大武

    2002-01-01

    With a statistical analysis of the research papers on information studies published from 1991 to 2000 in China, this article makes a bibliometric analysis of the subject distribution of these papers so as to reflect the present situation and development trend of researches on information studies in China.

  14. Using bibliometric maps of science in a science policy context

    Directory of Open Access Journals (Sweden)

    Ed Noyons

    2012-12-01

    Full Text Available Maps of science, particularly those using bibliographic data, have become more popular in the past decades. There is substantial increase of bibliometric maps of science thanks to more data becoming available, computer becoming more powerful and technology becoming more useable in this context.

  15. A Bibliography of Bibliometrics and Citation Indexing and Analysis.

    Science.gov (United States)

    Hjerppe, Roland

    More than 2,000 documents about citations, citation analysis, citation indexes, and bibliometrics are cited in this bibliography. Some documents on communication in science, scientometrics, the science of science, and information retrieval have been included where they apply to citation indexing. Although most of the documents cited are in…

  16. Bibliometric-enhanced Information Retrieval : 2nd International BIR Workshop

    NARCIS (Netherlands)

    Mayr, Philipp; Frommholz, Ingo; Scharnhorst, Andrea; Mutschke, Peter

    2015-01-01

    This workshop brings together experts of communities which often have been perceived as different once: bibliometrics / scientometrics / informetrics on the one side and information retrieval on the other. Our motivation as organizers of the workshop started from the observation that main discourses

  17. The Effects of Ready to Use Bibliometric Indicators

    DEFF Research Database (Denmark)

    Wildgaard, Lorna Elizabeth

    2014-01-01

    as they provide researchers with the opportunity to evaluate the effect of their own published works before being evaluated by others. The numerical values of these indicators have personal significance to the individual as they can be interpreted as criteria of success or failure, therefore the bibliometric...

  18. An initial bibliometric analysis and mapping of systems engineering research

    CSIR Research Space (South Africa)

    Oosthuizen, Rudolph

    2016-07-01

    Full Text Available methods and tools from business and social sciences are required to address all the issues in systems engineering. This paper performs a bibliometric analysis on the Systems Engineering journal from INCOSE to capture and discuss the status and trends...

  19. Bibliometric Modeling Processes and the Empirical Validity of Lotka's Law.

    Science.gov (United States)

    Nicholls, Paul Travis

    1989-01-01

    Examines the elements involved in fitting a bibliometric model to empirical data, proposes a consistent methodology for applying Lotka's law, and presents the results of an empirical test of the methodology. The results are discussed in terms of the validity of Lotka's law and the suitability of the proposed methodology. (49 references) (CLB)

  20. Cell Phones: A Bibliometric Analysis Related to Business Students

    Science.gov (United States)

    Piotrowski, Chris

    2014-01-01

    Recent reviews of the literature indicate that the scope of research on cell or mobile phones covers a vast typology (Piotrowski & Kass, 2013). The majority of this research is concentrated in the technology, education, and social sciences fields. However, there is a dearth of bibliometric studies on cell phones related to business. To that…

  1. Bibliometrics and Information Retrieval - Creating Knowledge through Research Synergies

    NARCIS (Netherlands)

    Bar-Ilan, Judit; Koopman, Rob; Wang, Shenghui; Scharnhorst, Andrea; John, Marcus; Mayr, Philipp; Wolfram, Dietmar

    2016-01-01

    This panel brings together experts in bibliometrics and information retrieval to discuss how each of these two important areas of information science can help to inform the research of the other. There is a growing body of literature that capitalizes on the synergies created by combining methodologi

  2. Bibliometric-enhanced Information Retrieval : 2nd International BIR Workshop

    NARCIS (Netherlands)

    Mayr, Philipp; Frommholz, Ingo; Scharnhorst, Andrea; Mutschke, Peter

    2015-01-01

    This workshop brings together experts of communities which often have been perceived as different once: bibliometrics / scientometrics / informetrics on the one side and information retrieval on the other. Our motivation as organizers of the workshop started from the observation that main discourses

  3. JOURNAL OF ACCOUNTING UNIVERSE: AN ANALYSIS OF THE SCIENTIFIC PRODUCTION PROFILE UNDER OPTIC BIBLIOMETRICS AND SOCIAL NETWORK FROM 2005 A 2012

    OpenAIRE

    Ribeiro, Henrique César Melo

    2014-01-01

    This article has mapped the profile and the evolution of scientific Journal of Accounting Universe. To this end, we analyzed the publications made this journal from 2005 to 2012. This study is based on bibliometric analysis techniques and social network, using descriptive statistics in 245 articles identified through desk research. The main results were as follows: predominance of articles in partnership; Souza, M. A. e Feliu, R. V, were the authors who have published more; centrality of co-a...

  4. Evaluating research and impact: a bibliometric analysis of research by the NIH/NIAID HIV/AIDS clinical trials networks.

    Directory of Open Access Journals (Sweden)

    Scott R Rosas

    Full Text Available Evaluative bibliometrics uses advanced techniques to assess the impact of scholarly work in the context of other scientific work and usually compares the relative scientific contributions of research groups or institutions. Using publications from the National Institute of Allergy and Infectious Diseases (NIAID HIV/AIDS extramural clinical trials networks, we assessed the presence, performance, and impact of papers published in 2006-2008. Through this approach, we sought to expand traditional bibliometric analyses beyond citation counts to include normative comparisons across journals and fields, visualization of co-authorship across the networks, and assess the inclusion of publications in reviews and syntheses. Specifically, we examined the research output of the networks in terms of the a presence of papers in the scientific journal hierarchy ranked on the basis of journal influence measures, b performance of publications on traditional bibliometric measures, and c impact of publications in comparisons with similar publications worldwide, adjusted for journals and fields. We also examined collaboration and interdisciplinarity across the initiative, through network analysis and modeling of co-authorship patterns. Finally, we explored the uptake of network produced publications in research reviews and syntheses. Overall, the results suggest the networks are producing highly recognized work, engaging in extensive interdisciplinary collaborations, and having an impact across several areas of HIV-related science. The strengths and limitations of the approach for evaluation and monitoring research initiatives are discussed.

  5. The Comparative Analysis of Statistics of Domestic and Foreign Professional Personnel%中外专业技术人员统计的比较研究

    Institute of Scientific and Technical Information of China (English)

    余芳东; 杨红军

    2004-01-01

    This paper would introduce the international concept of professionals and technicians and their standard classification, compare their statistics of China with those of the world and summarize the characters and problems of Chinese professionals' and technicians' statistics. Finally some suggestions to improve China's statistics would be given.

  6. Bibliometric analysis of fifty years of physica status solidi

    Energy Technology Data Exchange (ETDEWEB)

    Marx, Werner [Max Planck Institute for Solid State Research, Stuttgart (Germany); Hoffmann, Dieter [Max Planck Institute for the History of Sciences, Berlin (Germany)

    2011-12-15

    Bibliometric methods are used to analyze quantitatively the journal physica status solidi (pss) 50 years after its inception. First, the coverage of the journal by the relevant citation indices accessible under the Web of Science (WoS) and the field-specific INSPEC database is examined. The number of papers published per year by the journal as a whole and by the specific pss series is given. The time evolution of the pss output in terms of papers per year is compared with the output evolution of some major competing journals in the field of condensed-matter physics. The top-12 most frequently cited pss papers published within the complete time period 1961-2010 and within the two separate time periods 1974-1989 and 1990-2010 (before and after the German reunification) are listed. The citation time curves (citation history) of the three most frequently cited pss papers are presented. Furthermore, the Journal Impact Factors (JIFs) of the pss journal series (a) and (b) are discussed and their time evolution is shown. Moreover, the distribution of the pss papers over their document types and the authors is given. The countries of authors are ranked for the complete time period 1961-2010 as well as for the time periods 1973-1989 and 1990-2010. The complete ensemble of the citing papers of the pss papers is analyzed and discussed. The journals citing most often the pss papers published in the year 2000 are listed. Finally, the distribution of the pss papers over the various subject areas and classification terms based on the INSPEC database is tabled. (Copyright copyright 2011 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  7. A bibliometric analysis of scientific production in cancer molecular epidemiology.

    Science.gov (United States)

    Ugolini, Donatella; Puntoni, Riccardo; Perera, Frederica P; Schulte, Paul A; Bonassi, Stefano

    2007-08-01

    The main purpose of this research was to compare the scientific production in the field of cancer molecular epidemiology among countries and to evaluate the publication trend between 1995 and 2004. A bibliometric study was carried out searching the PubMed database with a combined search strategy based on the keywords listed in the medical subject headings and a free text search. Only articles from a representative subset of 92 journals--accounting for 80% of papers identified--were selected for the analysis, and the resulting 13,240 abstracts were manually checked according to a list of basic inclusion criteria. The study evaluated the number of publications and the impact factor (mean and sum), absolute and normalized by country population and gross domestic product. A total of 3,842 citations were finally selected for the analysis. Thirty-seven percent came from the European Union (UK, Germany, Italy, France and Sweden ranking at the top), 31.6% from USA and 9.7% from Japan. The highest mean impact factor was reported for Canada (6.3), USA (5.9), Finland (5.8) and UK (5.2). Finland, Sweden and Israel had the best ratio between scientific production and available resources. 'Genetic polymorphism, glutathione transferase, breast neoplasm, risk factors, case-control studies and polymerase chain reaction' were the most used keywords in each of the subgroups evaluated, although inclusion criteria may have privileged studies dealing with exogenous carcinogens. Cancer molecular epidemiology is an expanding area attracting an increasing interest. The identification of an operative definition is a necessary condition to give to this discipline a unique scientific identity.

  8. Bibliometric assessment of the Latin-American contributions in dengue.

    Science.gov (United States)

    Vera-Polania, Felipe; Perilla-Gonzalez, Yuliana; Martinez-Pulgarin, Dayron F; Baquero-Rodriguez, Juan D; Munoz-Urbano, Marcela; Lagos-Gallego, Mariana; Lagos-Grisales, Guillermo J; Villegas, Soraya; Rodriguez-Morales, Alfonso J

    2014-01-01

    Despite efforts in prevention and control of dengue, it is still a public health problem in the region. There are estimations of 13 million people affected in the Americas, therefore, it is of outmost importance to research it. An assessment on the Latin- American contributions on dengue was done. Bibliometric study at SCI (1980- 2013), MEDLINE/GOPUBMED (1802-2013), Scopus (1959-2013), SCIELO (2004-2013), LILACS (1980- 2013). Different study types, characterized by years, city/country of origin, journals and more productive authors, by country, cites and H index have been conducted. At SCI, 2598 articles were retrieved (21% of the total). Brazil was found to be the highest contributor (31.2%), then Puerto Rico (12.9%) and Mexico (10.7%). At Scopus, there are 2646 articles (16.7% of the total), 31.2% Brazil, 11.1% Mexico, 9.3% Cuba; the region received 41881 citations, 25.4% from Brazil (H index=45), 14.4% Cuba (H index=35) and 12.88% Puerto Rico (H index=38); 9.1% in Brazil were from Fundação Oswaldo Cruz; 1.6% of Mexico corresponded to Instituto Nacional de Salud Publica, 4.9% of Cuba are from Instituto de Medicina Tropical Pedro Kouri. At Medline, there are 2799 records (33.9% from Brazil). At SciELO there are 825 records (46.6% Brazil). At LILACS, there are 1178 records (46.8% Brazil). Brazil is the best producer in the region. In Puerto Rico and Brazil, there observed the epidemiologic burden of the disease. Scientific production in bibliographical data bases, particularly regional, is low, as compared to the high impact of the disease of in urban zones of the region.

  9. Toward Global Comparability of Sexual Orientation Data in Official Statistics: A Conceptual Framework of Sexual Orientation for Health Data Collection in New Zealand's Official Statistics System

    Science.gov (United States)

    Gray, Alistair; Veale, Jaimie F.; Binson, Diane; Sell, Randell L.

    2013-01-01

    Objective. Effectively addressing health disparities experienced by sexual minority populations requires high-quality official data on sexual orientation. We developed a conceptual framework of sexual orientation to improve the quality of sexual orientation data in New Zealand's Official Statistics System. Methods. We reviewed conceptual and methodological literature, culminating in a draft framework. To improve the framework, we held focus groups and key-informant interviews with sexual minority stakeholders and producers and consumers of official statistics. An advisory board of experts provided additional guidance. Results. The framework proposes working definitions of the sexual orientation topic and measurement concepts, describes dimensions of the measurement concepts, discusses variables framing the measurement concepts, and outlines conceptual grey areas. Conclusion. The framework proposes standard definitions and concepts for the collection of official sexual orientation data in New Zealand. It presents a model for producers of official statistics in other countries, who wish to improve the quality of health data on their citizens. PMID:23840231

  10. CHESS BOOKS IN SPAIN (1900-1939: A BIO-BIBLIOGRAPHIC DIRECTORY AND A BIBLIOMETRIC STUDY

    Directory of Open Access Journals (Sweden)

    Jordi Brasó Rius

    2016-03-01

    Full Text Available The work presents a description and analysis of chess books in Spain in the period 1900 to 1939. The tools used have been the main database of the Spanish libraries, along with bibliographical indexes of the subject matter. This has been contextualized with secondary sources. This allows us to locate the works analyzed in the social context of the time. Subsequently, a bibliometric statistical analysis used to assess and interpret issues of authorship, place of publication, publishers, years of increased circulation of works or controlling specific contents of the contributions. The results are useful to check that Barcelona and Madrid topped the printing of books. Also it manifests high Spanish and foreign production around the year 30. Other data is remarkable the informative function that had the most publications.

  11. [Bibliometrics study of the development trend of acupuncture-moxibustion clinical trials in foreign countries].

    Science.gov (United States)

    He, Wei; Tong, Yuan-Yuan; Zhao, Ying-Kai; Rong, Pei-Jing; Wang, Hong-Cai

    2012-04-01

    On the basis of MEDLINE and EMBASE database, through bibliometrics, the quantitative research was conducted on the published literatures on the acupuncture-moxibustion clinical trial abroad. The situation of published articles in each continent, country and institution was analyzed statistically. It was found that the number of published articles was higher in Germany, America, England, Sweden, Austria, Japan, South Korea, etc. In Europe, the clinical trial of acupuncture and moxibustion was in the tendency of more country participants, wider distribution and larger amount of research. In North America, America was the main country for the study. In Asia, Japan and South Korea played the leading role. Of those countries, some institutions in Germany America, and South Korea were on the top of the list. In future, the above-mentioned countries and institutions should be monitored specifically so as to launch the active cooperation and strategic project.

  12. STUDIES REFERED TO SERVICES IN THE 2005-2010 ENANPADS: A BIBLIOMETRIC SURVEY

    Directory of Open Access Journals (Sweden)

    José Antônio Menezes Varanda

    2014-12-01

    Full Text Available This bibliometric survey concerns articles published in the Marketing Academic Division of the EnANPADs with the word service(s in the title from 2005 to 2010. The research selected 51 articles with the following characteristics: number of authors per article, their respective institutions of affiliation, the frequency of attendance to the events, the methodological approaches, the means and ends of the researches and the data collection tools used. Data were tabulated and processed with descriptive statistics, and results showed that services are a relevant theme in Marketing research, either with a central or peripheral position. In the conclusions, five alerts were thrown, including the imbalance of research between private and public institutions and the geographic concentration of the participating institutions. Future studies are suggested.

  13. PHENOMENOLOGY, IT’S USE IN NURSING SCIENTIFIC PRODUCTION: BIBLIOMETRIC STUDY 2010-2014

    OpenAIRE

    Raúl Fernando Guerrero-Castañeda; Ma. Guadalupe Ojeda-Vargas

    2015-01-01

    Phenomenology emerges as a philosophy with Husserl; It´s the study of phenomena, it provides access to human consciousness in nursing, to understand the meaning of being human. The bibliometric analysis is useful to describe and evaluate scientific products reported in scientific journals. The objective is to analyze the use of phenomenology in nursing production with bibliometric indicators. Materials and methods. Retrospective descriptive bibliometric study. Articles published in indexed jo...

  14. Tracing thought through time and space: a selective review of bibliometrics in social work.

    Science.gov (United States)

    Holden, Gary; Rosenberg, Gary; Barker, Kathleen

    2005-01-01

    Bibliometrics is a field of research that examines bodies of knowledge within and across disciplines. Citation analysis, a component of bibliometrics, focuses on the quantitative assessment of citation patterns within a body of literature. Citation analysis has been used in social work to examine the quantity and the impact of the work of individuals and academic institutions. This paper presents a selective review of these uses of bibliometrics within social work.

  15. [New bibliometric indicators. Is this the end of the impact factor era?].

    Science.gov (United States)

    Berhidi, Anna; Szluka, Péter; Vasas, Lívia

    2009-06-01

    More and more bibliometric indicators emerge beside the impact factor, and a few of them are promising performance indicators. The aim of the study is to show briefly, but clearly the newest bibliometric measure numbers - like the recent enhancements of Journal Citation Report Web, Hirsch-index, Eigenfactor and SCImago Journal & Country Rank algorithms - focusing on the ranking of oncological journals, and to demonstrate the similarities and differences of the results with some examples. There are unified and well-structured web pages behind the newly appeared indicators, and some of the new numbers are presented in the well-known databases (Web of Science, Scopus) as scientific measures. The ranking of the compared oncological journals based on the different indicators show more similarities than differences, but more in-depth studies are required to find out how the results converge on any scientific area. There are some other methods, such as usage factor of the journals, beyond the indicators based on the citations. But the main point is that any ranking system should be a valid and correct representation of the scientific quality.

  16. Technology Resource, Distribution, and Development Characteristics of Global Influenza Virus Vaccine: A Patent Bibliometric Analysis.

    Science.gov (United States)

    Chen, Ning; Liu, Yun; Cheng, Yijie; Liu, Long; Yan, Zhe; Tao, Lixin; Guo, Xiuhua; Luo, Yanxia; Yan, Aoshuang

    2015-01-01

    Influenza virus vaccine (IVV) is a promising research domain that is closely related to global health matters, which has been acknowledged not only by scientists and technology developers, but also by policy-makers. Meanwhile, patents encompass valuable technological information and reflect the latest technological inventions as well as the innovative capability of a nation. However, little research has examined this up-and-coming research field using patent bibliometric method. Thus, this paper (a) designs the technology classification system and search strategy for the identification of IVV; and (b) presents a longitudinal analysis of the global IVV development based on the European Patent Office (EPO) patents. Bibliometric analysis is used to rank countries, institutions, inventors and technology subfields contributing to IVV technical progress. The results show that the global trends of IVV are a multi-developing feature of variety but an uneven technical resource distribution. Although the synthetic peptide vaccine is a comparatively young field, it already demonstrates the powerful vitality and the enormous development space. With the worldwide competition increasing, all nations especially China should be looking to increase devotion, enhance capability and regard effectiveness of technological innovation.

  17. FISH REPRODUCTION: BIBLIOMETRIC ANALYSIS OF WORLDWIDE AND BRAZILIAN PUBLICATIONS IN SCOPUS DATABASE

    Directory of Open Access Journals (Sweden)

    Marcella Costa RADAEL

    2015-12-01

    Full Text Available Reproduction is a fundamental part of life being and studies related to fish reproduction have been much accessed. The aim of this study was to perform a bibliometric analysis in intend to identify trends in this kind of publication. During June 2013, were performed searches on Scopus Database, using the term “fish reproduction”, being compiled and presented information related to the number of publications per year, number of publications by country, publications by author, by journal, by institution and most used keywords. Based on the study, it was possible to obtain the following results: Brazil occupies a highlight position in number of papers, being that the Brazilian participation compared to worldwide publishing production is having an exponential increase; in Brazil, there is a high concentration of articles when concerning the top 10 authors and institutions. The present study allows verifying that the term “fish reproduction” has been focused by many scientific papers, being that in Brazil there is a special research effort related to this subject, especially in the last few years. The main contribution concerns to the use of bibliometric methods to describe the growth and concentration of researches in the area of fishfarm and reproduction.

  18. Technology Resource, Distribution, and Development Characteristics of Global Influenza Virus Vaccine: A Patent Bibliometric Analysis.

    Directory of Open Access Journals (Sweden)

    Ning Chen

    Full Text Available Influenza virus vaccine (IVV is a promising research domain that is closely related to global health matters, which has been acknowledged not only by scientists and technology developers, but also by policy-makers. Meanwhile, patents encompass valuable technological information and reflect the latest technological inventions as well as the innovative capability of a nation. However, little research has examined this up-and-coming research field using patent bibliometric method. Thus, this paper (a designs the technology classification system and search strategy for the identification of IVV; and (b presents a longitudinal analysis of the global IVV development based on the European Patent Office (EPO patents. Bibliometric analysis is used to rank countries, institutions, inventors and technology subfields contributing to IVV technical progress. The results show that the global trends of IVV are a multi-developing feature of variety but an uneven technical resource distribution. Although the synthetic peptide vaccine is a comparatively young field, it already demonstrates the powerful vitality and the enormous development space. With the worldwide competition increasing, all nations especially China should be looking to increase devotion, enhance capability and regard effectiveness of technological innovation.

  19. Bibliometric Approach to Research Assessment: Publication Count, Citation Count, & Author Rank

    Directory of Open Access Journals (Sweden)

    Yang, Kiduk

    2013-03-01

    Full Text Available We investigated how bibliometric indicators such as publication count and citation count affect the assessment of research performance by computing various bibliometric scores of the works of Korean LIS faculty members and comparing the rankings by those scores. For the study data, we used the publication and citation data of 159 tenure-track faculty members of Library and Information Science departments in 34 Korean universities. The study results showed correlation between publication count and citation count for authors with many publications but the opposite evidence for authors with few publications. The study results suggest that as authors publish more and more work, citations to their work tend to increase along with publication count. However, for junior faculty members who have not yet accumulated enough publications, citations to their work are of great importance in assessing their research performance. The study data also showed that there are marked differences in the magnitude of citations between papers published in Korean journals and papers published in international journals.

  20. [Google Scholar and the h-index in biomedicine: the popularization of bibliometric assessment].

    Science.gov (United States)

    Cabezas-Clavijo, A; Delgado-López-Cózar, E

    2013-01-01

    The aim of this study is to review the features, benefits and limitations of the new scientific evaluation products derived from Google Scholar, such as Google Scholar Metrics and Google Scholar Citations, as well as the h-index, which is the standard bibliometric indicator adopted by these services. The study also outlines the potential of this new database as a source for studies in Biomedicine, and compares the h-index obtained by the most relevant journals and researchers in the field of intensive care medicine, based on data extracted from the Web of Science, Scopus and Google Scholar. Results show that although the average h-index values in Google Scholar are almost 30% higher than those obtained in Web of Science, and about 15% higher than those collected by Scopus, there are no substantial changes in the rankings generated from one data source or the other. Despite some technical problems, it is concluded that Google Scholar is a valid tool for researchers in Health Sciences, both for purposes of information retrieval and for the computation of bibliometric indicators.

  1. A non-parametric statistical test to compare clusters with applications in functional magnetic resonance imaging data.

    Science.gov (United States)

    Fujita, André; Takahashi, Daniel Y; Patriota, Alexandre G; Sato, João R

    2014-12-10

    Statistical inference of functional magnetic resonance imaging (fMRI) data is an important tool in neuroscience investigation. One major hypothesis in neuroscience is that the presence or not of a psychiatric disorder can be explained by the differences in how neurons cluster in the brain. Therefore, it is of interest to verify whether the properties of the clusters change between groups of patients and controls. The usual method to show group differences in brain imaging is to carry out a voxel-wise univariate analysis for a difference between the mean group responses using an appropriate test and to assemble the resulting 'significantly different voxels' into clusters, testing again at cluster level. In this approach, of course, the primary voxel-level test is blind to any cluster structure. Direct assessments of differences between groups at the cluster level seem to be missing in brain imaging. For this reason, we introduce a novel non-parametric statistical test called analysis of cluster structure variability (ANOCVA), which statistically tests whether two or more populations are equally clustered. The proposed method allows us to compare the clustering structure of multiple groups simultaneously and also to identify features that contribute to the differential clustering. We illustrate the performance of ANOCVA through simulations and an application to an fMRI dataset composed of children with attention deficit hyperactivity disorder (ADHD) and controls. Results show that there are several differences in the clustering structure of the brain between them. Furthermore, we identify some brain regions previously not described to be involved in the ADHD pathophysiology, generating new hypotheses to be tested. The proposed method is general enough to be applied to other types of datasets, not limited to fMRI, where comparison of clustering structures is of interest. Copyright © 2014 John Wiley & Sons, Ltd.

  2. C-terminal motif prediction in eukaryotic proteomes using comparative genomics and statistical over-representation across protein families

    Science.gov (United States)

    Austin, Ryan S; Provart, Nicholas J; Cutler, Sean R

    2007-01-01

    Background The carboxy termini of proteins are a frequent site of activity for a variety of biologically important functions, ranging from post-translational modification to protein targeting. Several short peptide motifs involved in protein sorting roles and dependent upon their proximity to the C-terminus for proper function have already been characterized. As a limited number of such motifs have been identified, the potential exists for genome-wide statistical analysis and comparative genomics to reveal novel peptide signatures functioning in a C-terminal dependent manner. We have applied a novel methodology to the prediction of C-terminal-anchored peptide motifs involving a simple z-statistic and several techniques for improving the signal-to-noise ratio. Results We examined the statistical over-representation of position-specific C-terminal tripeptides in 7 eukaryotic proteomes. Sequence randomization models and simple-sequence masking were applied to the successful reduction of background noise. Similarly, as C-terminal homology among members of large protein families may artificially inflate tripeptide counts in an irrelevant and obfuscating manner, gene-family clustering was performed prior to the analysis in order to assess tripeptide over-representation across protein families as opposed to across all proteins. Finally, comparative genomics was used to identify tripeptides significantly occurring in multiple species. This approach has been able to predict, to our knowledge, all C-terminally anchored targeting motifs present in the literature. These include the PTS1 peroxisomal targeting signal (SKL*), the ER-retention signal (K/HDEL*), the ER-retrieval signal for membrane bound proteins (KKxx*), the prenylation signal (CC*) and the CaaX box prenylation motif. In addition to a high statistical over-representation of these known motifs, a collection of significant tripeptides with a high propensity for biological function exists between species, among

  3. C-terminal motif prediction in eukaryotic proteomes using comparative genomics and statistical over-representation across protein families

    Directory of Open Access Journals (Sweden)

    Cutler Sean R

    2007-06-01

    Full Text Available Abstract Background The carboxy termini of proteins are a frequent site of activity for a variety of biologically important functions, ranging from post-translational modification to protein targeting. Several short peptide motifs involved in protein sorting roles and dependent upon their proximity to the C-terminus for proper function have already been characterized. As a limited number of such motifs have been identified, the potential exists for genome-wide statistical analysis and comparative genomics to reveal novel peptide signatures functioning in a C-terminal dependent manner. We have applied a novel methodology to the prediction of C-terminal-anchored peptide motifs involving a simple z-statistic and several techniques for improving the signal-to-noise ratio. Results We examined the statistical over-representation of position-specific C-terminal tripeptides in 7 eukaryotic proteomes. Sequence randomization models and simple-sequence masking were applied to the successful reduction of background noise. Similarly, as C-terminal homology among members of large protein families may artificially inflate tripeptide counts in an irrelevant and obfuscating manner, gene-family clustering was performed prior to the analysis in order to assess tripeptide over-representation across protein families as opposed to across all proteins. Finally, comparative genomics was used to identify tripeptides significantly occurring in multiple species. This approach has been able to predict, to our knowledge, all C-terminally anchored targeting motifs present in the literature. These include the PTS1 peroxisomal targeting signal (SKL*, the ER-retention signal (K/HDEL*, the ER-retrieval signal for membrane bound proteins (KKxx*, the prenylation signal (CC* and the CaaX box prenylation motif. In addition to a high statistical over-representation of these known motifs, a collection of significant tripeptides with a high propensity for biological function exists

  4. Toward Global Comparability of Sexual Orientation Data in Official Statistics: A Conceptual Framework of Sexual Orientation for Health Data Collection in New Zealand’s Official Statistics System

    Directory of Open Access Journals (Sweden)

    Frank Pega

    2013-01-01

    Full Text Available Objective. Effectively addressing health disparities experienced by sexual minority populations requires high-quality official data on sexual orientation. We developed a conceptual framework of sexual orientation to improve the quality of sexual orientation data in New Zealand’s Official Statistics System. Methods. We reviewed conceptual and methodological literature, culminating in a draft framework. To improve the framework, we held focus groups and key-informant interviews with sexual minority stakeholders and producers and consumers of official statistics. An advisory board of experts provided additional guidance. Results. The framework proposes working definitions of the sexual orientation topic and measurement concepts, describes dimensions of the measurement concepts, discusses variables framing the measurement concepts, and outlines conceptual grey areas. Conclusion. The framework proposes standard definitions and concepts for the collection of official sexual orientation data in New Zealand. It presents a model for producers of official statistics in other countries, who wish to improve the quality of health data on their citizens.

  5. [Bibliometrics and web use: the birth of altmetrics].

    Science.gov (United States)

    Scotti, Valeria

    2015-04-01

    Counting citations that a research article received by other articles was the traditional bibliometric method for the evaluation of a scientific research. Citations have been used both to evaluate a scientific paper - usually in conjunction with the peer review methods - and to determine the quality of a scientific research output. The development of tools even more Web 2.0 oriented has profoundly changed the scientific communication process. In this context, many web tools have emerged including the so-called "social media" (e-i., Facebook, Twitter). Hence the need for new indicators to measure the influence of these tools on the scientific community and the emergence of alternative metrics. Altmetrics combines the traditional bibliometrics tool with the use of the web. Formulated with the purpose to measure new aspects of scientific production, these new metrics are placed in order to complement and supplement the existing indicators rather than act as their replacements.

  6. Bibliometrics, citation indexing, and the journals of nursing.

    Science.gov (United States)

    Smith, Derek R; Hazelton, Michael

    2008-12-01

    Bibliometric research has risen in popularity during recent years and an increasing number of investigations now have examined the nursing literature. Our article provides a comprehensive overview of citation-based research in the nursing profession, as well as a discussion of bibliometrics, journal impact factors, and international publishing trends. The debate on evidence-based practice and its potential influence and relevance for nursing scholars is also covered. Although journal performance indicators are, no doubt, important for the contemporary nursing academic, it is the core research skills and attributes that nursing scholars, academics, and educators will need to consider more carefully in future if the next generation of professional nurse researchers is to truly flourish.

  7. The challenge of assessing the impact of science beyond bibliometrics.

    Science.gov (United States)

    Barreto, Mauricio L

    2013-08-01

    It is hoped that the knowledge produced by scientific research turns into concrete benefits (material or non-material). Bibliometrics, with its various indexes, became the reference of scientific evaluation as an "objective" measure of scientific impact. In Brazil, the evaluation system focused on CAPES has been of great importance for the development of postgraduate studies and research; however changes are necessary, among others, to its bibliometric approach. If we consider the area of health, the challenge of the Unified Health System (SUS) implies the search for scientifically sound alternatives, regarding questions ranging from diagnosis, cure and prevention of a variety of problems, to the organization of a macro-structure capable of giving broad and equal access to the resources required for improving the health of the population. The solutions require expertise and creativity on the part of the researchers and the expected products must include, but are not limited to scientific publications.

  8. Human Centred Design: a bibliometric overview based on Science Direct

    Directory of Open Access Journals (Sweden)

    Lucas José Garcia

    2016-05-01

    Full Text Available This article aims to realize a bibliometric review on Science Direct to create a outlook about Human Centred Design in order to identify the most significant authors, journals and key-words as well as the most recurrent denomination about the subject. The method employed consist of application of three classical bibliometric laws: the Inverse Square Law of Lotka; the Bradford’s Law of Scattering and; The frequency law of words in a text of Zipf. The results indicate that the subject is not a main subject of Design and related areas and does not have a main author based on Science Direct. The journals covered with more articles about the subject are the International Journal of Industrial Ergonomics and the Applied Ergonomics.

  9. Bibliometric analysis of publications on Campylobacter: (2000–2015)

    OpenAIRE

    Sweileh, Waleed M.; Al-Jabi, Samah W.; Sawalha, Ansam F; AbuTaha, Adham S; Zyoud, Sa’ed H.

    2016-01-01

    Background Campylobacter species are widespread zoonotic pathogens. Campylobacter jejuni causes a form of gastroenteritis called campylobacteriosis. Campylobacter drug resistance is considered a serious threat. In order to better understand national and international research output on Campylobacter, we conducted this bibliometric overview of publications on Campylobacter. This study can be used to assess extent of interaction and response of researchers, food regulators, and health policy ma...

  10. Worldwide research productivity on tramadol: a bibliometric analysis

    OpenAIRE

    Sweileh, Waleed M.; Shraim, Naser Y.; Zyoud, Sa’ed H.; Al-Jabi, Samah W.

    2016-01-01

    Background Pain management and safe use of analgesics is an important medical issue. Tramadol is an old analgesic with controversial properties. Evaluation of worldwide scientific output on tramadol has not been explored. Therefore, the main objective of this study was to give a bibliometric overview of global research productivity on tramadol. Methods SciVerse Scopus was used to retrieve and quantitatively and qualitatively analyze worldwide publications on tramadol. Results A total of 2059 ...

  11. A new method to compare statistical tree growth curves: the PL-GMANOVA model and its application with dendrochronological data.

    Directory of Open Access Journals (Sweden)

    Martin Ricker

    Full Text Available Growth curves are monotonically increasing functions that measure repeatedly the same subjects over time. The classical growth curve model in the statistical literature is the Generalized Multivariate Analysis of Variance (GMANOVA model. In order to model the tree trunk radius (r over time (t of trees on different sites, GMANOVA is combined here with the adapted PL regression model Q = A · T+E, where for b ≠ 0 : Q = Ei[-b · r]-Ei[-b · r1] and for b = 0 : Q  = Ln[r/r1], A =  initial relative growth to be estimated, T = t-t1, and E is an error term for each tree and time point. Furthermore, Ei[-b · r]  = ∫(Exp[-b · r]/rdr, b = -1/TPR, with TPR being the turning point radius in a sigmoid curve, and r1 at t1 is an estimated calibrating time-radius point. Advantages of the approach are that growth rates can be compared among growth curves with different turning point radiuses and different starting points, hidden outliers are easily detectable, the method is statistically robust, and heteroscedasticity of the residuals among time points is allowed. The model was implemented with dendrochronological data of 235 Pinus montezumae trees on ten Mexican volcano sites to calculate comparison intervals for the estimated initial relative growth A. One site (at the Popocatépetl volcano stood out, with A being 3.9 times the value of the site with the slowest-growing trees. Calculating variance components for the initial relative growth, 34% of the growth variation was found among sites, 31% among trees, and 35% over time. Without the Popocatépetl site, the numbers changed to 7%, 42%, and 51%. Further explanation of differences in growth would need to focus on factors that vary within sites and over time.

  12. A new method to compare statistical tree growth curves: the PL-GMANOVA model and its application with dendrochronological data.

    Science.gov (United States)

    Ricker, Martin; Peña Ramírez, Víctor M; von Rosen, Dietrich

    2014-01-01

    Growth curves are monotonically increasing functions that measure repeatedly the same subjects over time. The classical growth curve model in the statistical literature is the Generalized Multivariate Analysis of Variance (GMANOVA) model. In order to model the tree trunk radius (r) over time (t) of trees on different sites, GMANOVA is combined here with the adapted PL regression model Q = A · T+E, where for b ≠ 0 : Q = Ei[-b · r]-Ei[-b · r1] and for b = 0 : Q  = Ln[r/r1], A =  initial relative growth to be estimated, T = t-t1, and E is an error term for each tree and time point. Furthermore, Ei[-b · r]  = ∫(Exp[-b · r]/r)dr, b = -1/TPR, with TPR being the turning point radius in a sigmoid curve, and r1 at t1 is an estimated calibrating time-radius point. Advantages of the approach are that growth rates can be compared among growth curves with different turning point radiuses and different starting points, hidden outliers are easily detectable, the method is statistically robust, and heteroscedasticity of the residuals among time points is allowed. The model was implemented with dendrochronological data of 235 Pinus montezumae trees on ten Mexican volcano sites to calculate comparison intervals for the estimated initial relative growth A. One site (at the Popocatépetl volcano) stood out, with A being 3.9 times the value of the site with the slowest-growing trees. Calculating variance components for the initial relative growth, 34% of the growth variation was found among sites, 31% among trees, and 35% over time. Without the Popocatépetl site, the numbers changed to 7%, 42%, and 51%. Further explanation of differences in growth would need to focus on factors that vary within sites and over time.

  13. Bibliometric profile of neurogenic bladder in the literature: a 20-year bibliometric analysis

    Directory of Open Access Journals (Sweden)

    Yuan Gao

    2015-01-01

    Full Text Available Neurogenic bladder is a dysfunction of the lower urinary tract caused by nervous system disorder. We investigated the trends in publication of articles under the topic "neurogenic bladder" using bibliometric analysis. Articles on neurogenic bladder, published between 1995 and 2014, were retrieved from the ISI Web of Science citation database. We analyzed the search results for authors, countries, institutions, journals, and top-cited papers. A total of 1,904 articles were retrieved. There was a small increase in the number of articles on neurogenic bladder from 1995 (n = 43 to 2014 (n = 117. The USA was the leading country in the total number of articles (n = 598. However, the number of publications from China has rapidly increased, and China was ranked second in 2014. Emmanuel Chartier-Kastler (n = 65 was the most productive author, and University of Paris VI (Paris 6 (n = 61 was the most productive institution. The Journal of Urology published the greatest number of articles on this topic (n = 285. Articles on neurogenic bladder were often published in a professional journal under the category Urology & Nephrology, Neurosciences & Neurology, or Rehabilitation. Visualization analysis based on co-citation networks was conducted using CiteSpace III. Visualization analysis revealed that the hot spots in neurogenic bladder were botulinum toxin-A, prazosin, bethanechol, and afferent pathways. These findings provide new insight into the publication trends and hot spots in neurogenic bladder.

  14. Bibliometric profile of neurogenic bladder in the literature:a 20-year bibliometric analysis

    Institute of Scientific and Technical Information of China (English)

    Yuan Gao; Bo Qu; Yan Shen; Xiao-jing Su; Xiao-yan Dong; Xue-mei Chen; Yu-hong Zhou; Hong-ying Pi

    2015-01-01

    Neurogenic bladder is a dysfunction of the lower urinary tract caused by nervous system disor-der. We investigated the trends in publication of articles under the topic “neurogenic bladder”using bibliometric analysis. Articles on neurogenic bladder, published between 1995 and 2014, were retrieved from the ISI Web of Science citation database. We analyzed the search results for authors, countries, institutions, journals, and top-cited papers. A total of 1,904 articles were re-trieved. There was a small increase in the number of articles on neurogenic bladder from 1995 (n = 43) to 2014 (n = 117). The USA was the leading country in the total number of articles (n =598). However, the number of publications from China has rapidly increased, and China was ranked second in 2014. Emmanuel Chartier-Kastler (n = 65) was the most productive author, and University of Paris VI (Paris 6) (n = 61) was the most productive institution.The Journal of Urology published the greatest number of articles on this topic (n = 285). Articles on neurogenic bladder were often published in a professional journal under the category Urology & Nephrology, Neurosciences & Neurology, or Rehabilitation. Visualization analysis based on co-citation networks was conducted using CiteSpace III. Visualization analysis revealed that the hot spots in neurogenic bladder were botulinum toxin-A, prazosin, bethanechol, and afferent pathways. These findings provide new insight into the publication trends and hot spots in neurogenic bladder.

  15. The scientific road of Manuel Cardona: a bibliometric analysis

    Energy Technology Data Exchange (ETDEWEB)

    Romero, A.H. [Materials Department, CINVESTAV Unidad Queretaro, QRO CP 76230 (Mexico); Kremer, R.K.; Marx, W. [Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart (Germany)

    2011-01-15

    We present a detailed bibliometric analysis of the scientific contributions of Manuel Cardona, who represents an interesting example of a renowned scientist with a long and fruitful career. His publications provide an appropriate basis to apply various bibliometric techniques to measure the impact of his scientific achievements. For this purpose, we have taken into account his full publication record, the institutions of all his coauthors, the journals where his papers have been published, and the citations of his papers as a measure of their impact. We have analyzed in more detail some of his most important publications, which appeared as journal papers and book contributions. Additionally, we have broken down the complete ensemble of the citing papers with respect to the countries of authors, the journals, and the subject areas. The analysis performed in this study also makes use of the Hirsch index as one of the most recognized bibliometric indicators which has rapidly captured the field of research evaluation. Finally, we have established the citation historiogram based on the most highly-cited papers to visualize their citation network. (Copyright copyright 2011 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  16. Inciting the Metric Oriented Humanist: Teaching Bibliometrics in a Faculty of Humanities

    DEFF Research Database (Denmark)

    Zuccala, Alesia Ann

    2016-01-01

    principles and practices associated with teaching bibliometrics to humanists, with the aim of encouraging students to reflect upon new indicators relevant to scholarly research outputs across the humanities. Emphasis is placed on the “biblio” in bibliometrics (i.e., books), digital record-keeping across...

  17. Advanced Bibliometric Methods To Model the Relationship between Entry Behavior and Networking in Emerging Technological Communities.

    Science.gov (United States)

    Debackere, Koenraad; Clarysse, Bart

    1998-01-01

    Technological communities used bibliometric data on 411 plant biotechnology organizations to study the effect of field density and structure of the research and development network. Findings indicate the usefulness of bibliometric data in mapping change in technological communities and in the effects of networking on entry behavior. (PEN)

  18. Bibliometric analyses on repository contents for the evaluation of research at Wageningen UR

    NARCIS (Netherlands)

    Veller, van M.G.P.; Gerritsma, W.; Togt, van der P.L.; Leon, C.D.; Zeist, van C.M.

    2010-01-01

    Since the last two decennia, Wageningen UR Library has been involved in bibliometric analyses for the evaluation of scientific output of staff, chair groups and research institutes of Wageningen UR. In these advanced bibliometric analyses several indicator scores, such as the number of publications,

  19. Professional Competencies and Jurisdictional Claims in Evaluative Bibliometrics: The Educational Mandate of Academic Librarians

    Science.gov (United States)

    Petersohn, Sabrina

    2016-01-01

    Quantitative metrics in research assessment are proliferating all over the world. The demand has led to an increase in bibliometric practitioners and service providers. Their professional roles and competencies have not yet been subject to systematic study. This paper focuses on one important service provider in evaluative bibliometrics--academic…

  20. Studying Student Benefits of Assigning a Service-Learning Project Compared to a Traditional Final Project in a Business Statistics Class

    Science.gov (United States)

    Phelps, Amy L.; Dostilio, Lina

    2008-01-01

    The present study addresses the efficacy of using service-learning methods to meet the GAISE guidelines (http://www.amstat.org/education/gaise/GAISECollege.htm) in a second business statistics course and further explores potential advantages of assigning a service-learning (SL) project as compared to the traditional statistics project assignment.…

  1. Bibliometric Studies in CIMEL: A Latin-American Medical Student Journal and the Future of Bibliometric Publications

    Directory of Open Access Journals (Sweden)

    Francisco J. Bonilla-Escobar

    2013-12-01

    Full Text Available Background: Bibliometric or scientometric studies are methodological fields focused on the structural analysis of the information contained in scientific publication and generate indicators that help identify challenges and achievements in research. We aimed to characterize the publications that used this method authored by medical students in Latin America. Methods: We reviewed articles that performed a bibliometric analysis and were published in a Latin American medical student journal, between 2001 and 2012. We analyzed the characteristics of the articles, authors and references. Linear simple regression and Pearson correlation coefficient (PCC were developed to identify trends and correlations with 95% confidence. Results: There were 12 volumes of the journal available online, with a total of 236 articles. Of these, 13 (5.5% were bibliometric studies: five original articles, four letters to the editor, two editorials, one short communication, and one review. There was a positive significant relationship between time (years and number of publications (ß1=0.16, p=0.03, PCC=63%, and citations of each article (not significant, ß1=1.3, p=0.09, PCC=49%. Conclusion: There was an increase in the number of bibliometric publications after 2008, possibly influenced by a popularization of these types of studies in Latin America. Findings should motivate new and collaborative studies in this field. Moreover, it will be necessary to clarify publication areas of interest of medical students around the world.

  2. Comparative forensic soil analysis of New Jersey state parks using a combination of simple techniques with multivariate statistics.

    Science.gov (United States)

    Bonetti, Jennifer; Quarino, Lawrence

    2014-05-01

    This study has shown that the combination of simple techniques with the use of multivariate statistics offers the potential for the comparative analysis of soil samples. Five samples were obtained from each of twelve state parks across New Jersey in both the summer and fall seasons. Each sample was examined using particle-size distribution, pH analysis in both water and 1 M CaCl2 , and a loss on ignition technique. Data from each of the techniques were combined, and principal component analysis (PCA) and canonical discriminant analysis (CDA) were used for multivariate data transformation. Samples from different locations could be visually differentiated from one another using these multivariate plots. Hold-one-out cross-validation analysis showed error rates as low as 3.33%. Ten blind study samples were analyzed resulting in no misclassifications using Mahalanobis distance calculations and visual examinations of multivariate plots. Seasonal variation was minimal between corresponding samples, suggesting potential success in forensic applications. © 2014 American Academy of Forensic Sciences.

  3. A Statistical Comparative Planetology Approach to the Hunt for Habitable Exoplanets and Life Beyond the Solar System

    Science.gov (United States)

    Bean, Jacob L.; Abbot, Dorian S.; Kempton, Eliza M.-R.

    2017-06-01

    The search for habitable exoplanets and life beyond the solar system is one of the most compelling scientific opportunities of our time. Nevertheless, the high cost of building facilities that can address this topic and the keen public interest in the results of such research requires rigorous development of experiments that can deliver a definitive advancement in our understanding. Most work to date in this area has focused on a “systems science” approach of obtaining and interpreting comprehensive data for individual planets to make statements about their habitability and the possibility that they harbor life. This strategy is challenging because of the diversity of exoplanets, both observed and expected, and the limited information that can be obtained with astronomical instruments. Here, we propose a complementary approach that is based on performing surveys of key planetary characteristics and using statistical marginalization to answer broader questions than can be addressed with a small sample of objects. The fundamental principle of this comparative planetology approach is maximizing what can be learned from each type of measurement by applying it widely rather than requiring that multiple kinds of observations be brought to bear on a single object. As a proof of concept, we outline a survey of terrestrial exoplanet atmospheric water and carbon dioxide abundances that would test the habitable zone hypothesis and lead to a deeper understanding of the frequency of habitable planets. We also discuss ideas for additional surveys that could be developed to test other foundational hypotheses in this area.

  4. ACCURACY ANALYSIS OF WRIGHT'S CAPABILITY INDEX "CS" AND MODELLING NON-NORMAL DATA USING STATISTICAL SOFTWARE-A COMPARATIVE STUDY

    Directory of Open Access Journals (Sweden)

    Yerriswamy Wooluru

    2015-06-01

    Full Text Available Process Capability Indices (PCI has been widely used as a means of summarizing process performance relative to set of specification limits. The proper use of process capability indices are based on some assumptions which may not be true always. Therefore, sometime whether the process capability indices can truly reflect the performance of a process is questionable. Most of PCIs, including Cp, Cpk, Cpm and Cpmk, neglect the changes in the shape of the distribution, which is an important indicator of problems in skewness-prone processes. Wright proposed a process capability index 'Cs' to detect shape changes in a process due to skewness by incorporating a penalty for skewness. In this paper, the effect of skewness on assessment of accuracy of Wright's capability index Cs is studied and comparison is made with Cp, Cpk, Cpm and Cpmk indices when the distribution of the quality characteristic (spring force considered is skewed slightly. This paper also discusses how modelling the non normal data using statistical software and results were compared with other methods.

  5. 国际服务贸易统计体系的比较研究%The Comparative Research on the System of External Service Trade Statistics

    Institute of Scientific and Technical Information of China (English)

    李静萍

    2002-01-01

    This paper elaborates the two definitions of international services trade,and compares the BOPstatis-tical system and GATSstatistical system。Based on these ,it puts forward proplsal improving statistical system for international services trade in China。

  6. Globally national - locally international: Bibliometric analysis of a SEE psychology journal

    Directory of Open Access Journals (Sweden)

    Pajić Dejan

    2014-01-01

    Full Text Available The article explores bibliometric features of the Serbian psychology journal Psihologija in the 2001-2012 period. Several basic indicators of the journal’s impact were generated and compared between two periods, before and after 2007 when Psihologija was included in Social Sciences Citation Index (SSCI. Journal’s output was evaluated in regard to other psychology journals included in SSCI in the same year. The results have shown that Psihologija’s impact factor has raised following the increased internationalization of the journal, quantified as the proportion of articles published in English and/or written by foreign authors. However, Psihologija and other South East European (SEE journals still lack a solid international communication network, which is reflected in the absence of related journals and large proportion of citations from local authors. The article concludes with several suggestions for authors, journal editors, and science policy institutions.

  7. Bibliometric Indicators of Young Authors in Astrophysics: Can Later Stars be Predicted?

    CERN Document Server

    Havemann, Frank

    2014-01-01

    We test 16 bibliometric indicators with respect to their validity at the level of the individual researcher by estimating their power to predict later successful researchers. We compare the indicators of a sample of astrophysics researchers who later co-authored highly cited papers before their first landmark paper with the distributions of these indicators over a random control group of young authors in astronomy and astrophysics. We find that field and citation-window normalisation substantially improves the predicting power of citation indicators. The two indicators of total influence based on citation numbers normalised with expected citation numbers are the only indicators which show differences between later stars and random authors significant on a 1% level. Indicators of paper output are not very useful to predict later stars. The famous $h$-index makes no difference at all between later stars and the random control group.

  8. A Bibliometric Analysis of Toxicology Publications of Iran and Turkey in ISI Web of Science

    Directory of Open Access Journals (Sweden)

    Mohammad Delirrad

    2013-02-01

    Full Text Available Background: Web of Science (WoS is an online academic citation index provided by Thomson Reuters which supplies valuable bibliometric information for comparing impact of specific author, organization, or country in science production. The aim of this study was to compare toxicology publications of Iran and Turkey indexed in WoS from bibliometric point of view. Methods: The WoS database was queried based on keywords “Iran” and “Turkey” separately in the “Address” field and refined by “Toxicology” as a category. All records were transferred to Microsoft Excel® application. The dataset were analyzed from different perspectives, such as publication years, number of references and citations, authorship pattern, publications types, affiliated organizations, core subject areas and journals. Results: There were 1178 and 2240 publications that met the criteria during 1993-2011 for Iran and Turkey, respectively. Less than 2% of authors had published more than 25% of all toxicology papers in both countries. The average number of citation per article was about 3.48 for Iranian and 6.73 for Turkish papers. By the time of the analysis, 54.3% of Iranian and 31.6% of Turkish articles had not received any citation. Conclusion: This analysis reveals that top Iranian toxicologists had a better performance than their Turkish counterparts but overall authorship pattern was well-distributed among Turkish researchers and organizations. If Iranian authors desire to achieve first rank of toxicology articles in the Middle East region by 2025, they must try to increase the quantity and quality of their international publications.

  9. Statistics matter: data aggregation improves identification of community-level effects compared to a commonly used multivariate method.

    Science.gov (United States)

    Beketov, Mikhail A; Kattwinkel, Mira; Liess, Matthias

    2013-12-01

    The identification of the effects of toxicants on biological communities is hampered by the complexity and variability of communities. To overcome these challenges, the trait-based SPEAR approach has been developed. This approach is based on (i) identifying the vulnerable taxa using traits and (ii) aggregating these taxa into a group to reduce the between-replicate differences and scattered low-abundance distribution, both of which are typical for biological communities. This approach allows for reduction of the noise and determination of the effects of toxicants at low concentrations in both field and mesocosm studies. However, there is a need to quantitatively investigate its potential for mesocosm data evaluations and application in the ecological risk assessment of toxicants. In the present study, we analysed how the aggregation of the sensitive taxa can facilitate the identification of the effects. We used empirical data from a long-term mesocosm experiment with stream invertebrates and an insecticide as well as a series of simulated datasets characterised by different degrees of data matrix saturation (corresponding to different sampling efforts), numbers of replicates, and between-replicate differences. The analyses of both the empirical and simulated data sets revealed that the taxa aggregation approach allows for the detection of effects at a lower saturation of the data matrices, smaller number of replicates, and higher between-replicate differences when compared to the multivariate statistical method redundancy analysis. These improvements lead to a higher sensitivity of the analysed systems, as long-term effects were detected at lower concentrations (up to 1,000 times). These outcomes suggest that methods based on taxa aggregation have a strong potential for use in mesocosm data evaluations because mesocosm studies are usually poorly replicated, have high between-replicate variability, and cannot be exhaustively sampled due to technical and financial

  10. Public health research in India in the new millennium: a bibliometric analysis

    Directory of Open Access Journals (Sweden)

    Anuska Kalita

    2015-08-01

    Full Text Available Background: Public health research has gained increasing importance in India's national health policy as the country seeks to address the high burden of disease and its inequitable distribution, and embarks on an ambitious agenda towards universalising health care. Objective: This study aimed at describing the public health research output in India, its focus and distribution, and the actors involved in the research system. It makes recommendations for systematically promoting and strengthening public health research in the country. Design: The study was a bibliometric analysis of PubMed and IndMed databases for years 2000–2010. The bibliometric data were analysed in terms of biomedical focus based on the Global Burden of Disease, location of research, research institutions, and funding agencies. Results: A total of 7,893 eligible articles were identified over the 11-year search period. The annual research output increased by 42% between 2000 and 2010. In total, 60.8% of the articles were related to communicable diseases, newborn, maternal, and nutritional causes, comparing favourably with the burden of these causes (39.1%. While the burdens from non-communicable diseases and injuries were 50.2 and 10.7%, respectively, only 31.9 and 7.5% of articles reported research for these conditions. The north-eastern states and the Empowered-Action-Group states of India were the most under-represented for location of research. In total, 67.2% of papers involved international collaborations and 49.2% of these collaborations were with institutions in the UK or USA; 35.4% of the publications involved international funding and 71.2% of funders were located in the UK or USA. Conclusions: While public health research output in India has increased significantly, there are marked inequities in relation to the burden of disease and the geographic distribution of research. Systematic priority setting, adequate funding, and institutional capacity building are

  11. Scientific research in malaria: bibliometric assessment of the Latin-American contributions.

    Science.gov (United States)

    Munoz-Urbano, Marcela; Lopez-Isaza, Andres F; Hurtado-Hurtado, Natalia; Gomez-Suta, Daniela; Murillo-Abadia, Jonathan; Delgado-Osorio, Nathalia; Lagos-Grisales, Guillermo J; Villegas, Soraya; Medina-Morales, Diego A; Rodriguez-Morales, Alfonso J

    2014-01-01

    Malaria is a parasitic disease of high global impact in public health, including Latin America. There should be more researched, particularly in this region. A bibliometric assessment of the Latin American contributions about malaria was done. Bibliometric study at SCI (1980-2013), MEDLINE/ GOPUBMED (1802-2013), Scopus (1959-2013), SCIELO (2004-2013), LILACS (1980-2013). The studies were characterized by study type, year of publication, city/country of origin, journals and more productive authors, citations and H index. At SCI, 2,806 articles were retrieved (5.13% of the total). Brazil was the highest producer (31.41%), followed by Colombia (14.3%) and Mexico (9.5%). The region received 39,894 citations, 32.2% from Brazil (H index=51), 12.75% Mexico (H index=38), 11.2% Colombia (H index=33). At Scopus, there are 4,150 articles (4.9% of the total), 33.0% Brazil, 11.3% Colombia and 8.8% Mexico; 17% in Brazil were from Universidad de São Paulo; 23.6% of Colombia from Universidad de Antioquia; 15.4% of Mexico from Instituto Nacional de Salud Pública. At Medline there were 4,278 records (36.8% Brazil). At SciELO there are 792 records (45.3% Brazil). At LILACS there were 1744 records (34.3% Brazil). Brazil has the highest output of the region, as Venezuela the scientific production in Malaria was related with the burden of disease. This was not the case for Colombia. Scientific production at bibliographical databases, particularly regionals, is low, compared to the high incidence of this disease that requires more research and control.

  12. Biblio-MetReS for user-friendly mining of genes and biological processes in scientific documents

    Directory of Open Access Journals (Sweden)

    Anabel Usie

    2014-02-01

    Full Text Available One way to initiate the reconstruction of molecular circuits is by using automated text-mining techniques. Developing more efficient methods for such reconstruction is a topic of active research, and those methods are typically included by bioinformaticians in pipelines used to mine and curate large literature datasets. Nevertheless, experimental biologists have a limited number of available user-friendly tools that use text-mining for network reconstruction and require no programming skills to use. One of these tools is Biblio-MetReS. Originally, this tool permitted an on-the-fly analysis of documents contained in a number of web-based literature databases to identify co-occurrence of proteins/genes. This approach ensured results that were always up-to-date with the latest live version of the databases. However, this ‘up-to-dateness’ came at the cost of large execution times. Here we report an evolution of the application Biblio-MetReS that permits constructing co-occurrence networks for genes, GO processes, Pathways, or any combination of the three types of entities and graphically represent those entities. We show that the performance of Biblio-MetReS in identifying gene co-occurrence is as least as good as that of other comparable applications (STRING and iHOP. In addition, we also show that the identification of GO processes is on par to that reported in the latest BioCreAtIvE challenge. Finally, we also report the implementation of a new strategy that combines on-the-fly analysis of new documents with preprocessed information from documents that were encountered in previous analyses. This combination simultaneously decreases program run time and maintains ‘up-to-dateness’ of the results. Availability: http://metres.udl.cat/index.php/downloads, Contact: metres.cmb@gmail.com.

  13. A Kernel-based Account of Bibliometric Measures

    Science.gov (United States)

    Ito, Takahiko; Shimbo, Masashi; Kudo, Taku; Matsumoto, Yuji

    The application of kernel methods to citation analysis is explored. We show that a family of kernels on graphs provides a unified perspective on the three bibliometric measures that have been discussed independently: relatedness between documents, global importance of individual documents, and importance of documents relative to one or more (root) documents (relative importance). The framework provided by the kernels establishes relative importance as an intermediate between relatedness and global importance, in which the degree of `relativity,' or the bias between relatedness and importance, is naturally controlled by a parameter characterizing individual kernels in the family.

  14. Use of Systems Dynamics in Reverse Logistics: A Bibliometric Analysis

    Directory of Open Access Journals (Sweden)

    Caroline Rodrigues Vaz

    2016-11-01

    Full Text Available This article aims to perform a literature review on the models and applications of system dynamics, through bibliometrics. We examined 25 articles, retrieved from three international databases. The results show the most relevant articles, the main authors, and the most relevant keywords and journals on the subject. It was concluded that the authors with the greatest number of articles produce co-authored knowledge, and there appears to be a common core of research focused on the study of strategies, methodologies, planning and sustainability of the supply chain, mainly in the production of electronic equipment.

  15. Bibliometrics and citation analysis from the science citation index to cybermetrics

    CERN Document Server

    De Bellis, Nicola

    2009-01-01

    Bibliometrics and Citation Analysis: From the Science Citation Index to Cybermetrics offers a comprehensive overview of theories, techniques, concepts, and applications in the interdisciplinary and steadily growing field of bibliometrics. This book looks at bibliographic citation and citation networks by discussing the past, present, and future of bibliometrics, from its foundations in the Science Citation Index to its expansion into the World Wide Web. It is useful to those in every area of scholarship involved in the quantitative analysis of information exchanges, but also to general readers

  16. [On the proper use of bibliometrics to evaluate physicians and scientists].

    Science.gov (United States)

    Bach, Jean-François

    2011-06-01

    Quantitative analysis of publications and their citations, a procedure known as bibliometrics, has become increasingly important in the evaluation of scientists and clinicians. In the clinical setting, bibliometrics is used for the calculation of hospital budgets. While bibliometrics is attractive because it rapidly provides numbers that bear a certain relation to scientific productivity, it is often misused. The parameters chosen are questionable and sometimes worthless because of material errors or inappropriate use. More importantly, reducing the activity of a scientist or physician simply to the number of his or her publications or citations, without analyzing the importance and impact of the work itself can lead to serious errors.

  17. Motivation Measures in Sport: A Critical Review and Bibliometric Analysis.

    Science.gov (United States)

    Clancy, Rachel B; Herring, Matthew P; Campbell, Mark J

    2017-01-01

    Motivation is widely-researched, in both sport psychology and other fields. As rigorous measurement is essential to understanding this latent construct, a critical appraisal of measurement instruments is needed. Thus, the purpose of this review was to evaluate the six most highly cited motivation measures in sport. Peer-reviewed articles published prior to August 2016 were searched to identify the six most highly cited motivation questionnaires in sport: Sport Motivation Scale (SMS), Intrinsic Motivation Inventory (IMI), Situational Motivational Scale (SIMS), Perceptions of Success Questionnaire (POSQ), Behavioural Regulation in Sport Questionnaire (BRSQ), and Task and Ego Orientation in Sport Questionnaire (TEOSQ). The questionnaires were then evaluated and discussed in four sections: Development, Reliability, Correlates, and Summary. Bibliometric data were also calculated (average weighted impact factor) and assessed (e.g., citations per year) to evaluate the impact of the use of each questionnaire. Despite some variance in their psychometric properties, conceptualization, structure, and utility, the six questionnaires are psychometrically strong instruments for quantifying motivation that are widely supported in the literature. Bibliometric analyses suggested that the IMI ranks first and the SMS ranks sixth according to the average weighted impact factors of their original publications. Consideration of each questionnaire's psychometric strengths/limitations, and conceptualization of motivation in the context of specific research questions should guide researchers in selecting the most appropriate instrument to measure motivation in sport. The average weighted impact factor of each questionnaire is a useful value to consider as well. With these points in mind, recommendations are provided.

  18. Motivation Measures in Sport: A Critical Review and Bibliometric Analysis

    Science.gov (United States)

    Clancy, Rachel B.; Herring, Matthew P.; Campbell, Mark J.

    2017-01-01

    Motivation is widely-researched, in both sport psychology and other fields. As rigorous measurement is essential to understanding this latent construct, a critical appraisal of measurement instruments is needed. Thus, the purpose of this review was to evaluate the six most highly cited motivation measures in sport. Peer-reviewed articles published prior to August 2016 were searched to identify the six most highly cited motivation questionnaires in sport: Sport Motivation Scale (SMS), Intrinsic Motivation Inventory (IMI), Situational Motivational Scale (SIMS), Perceptions of Success Questionnaire (POSQ), Behavioural Regulation in Sport Questionnaire (BRSQ), and Task and Ego Orientation in Sport Questionnaire (TEOSQ). The questionnaires were then evaluated and discussed in four sections: Development, Reliability, Correlates, and Summary. Bibliometric data were also calculated (average weighted impact factor) and assessed (e.g., citations per year) to evaluate the impact of the use of each questionnaire. Despite some variance in their psychometric properties, conceptualization, structure, and utility, the six questionnaires are psychometrically strong instruments for quantifying motivation that are widely supported in the literature. Bibliometric analyses suggested that the IMI ranks first and the SMS ranks sixth according to the average weighted impact factors of their original publications. Consideration of each questionnaire's psychometric strengths/limitations, and conceptualization of motivation in the context of specific research questions should guide researchers in selecting the most appropriate instrument to measure motivation in sport. The average weighted impact factor of each questionnaire is a useful value to consider as well. With these points in mind, recommendations are provided. PMID:28337165

  19. Bibliometric Patterns of Research Literature Production on Nursing Informatics Competence.

    Science.gov (United States)

    Kokol, Peter; Blažun Vošner, Helena; Železnik, Danica; Vošner, Janez; Saranto, Kaija

    2015-10-01

    Nursing informatics competence is a prerequisite for successful information management, evidence-based practices optimizing patient care health promotion, and communication with information communication technology-literate patients. The aim of this study was to assess the trends in the production of nursing informatics competence research literature and to identify the most productive bibliometric entities. In addition to the correspondence analysis, bibliometric analysis and mapping were used to achieve the aim. A total of 366 information sources were extracted, 14.5% of which were sponsored studies. The production of research literature on nursing informatics competence is growing, but this research is only occasionally published in the most recognized nursing journals. Identifying where the intensive research on nursing informatics competence is beneficial to care for the patient of the future and building user-friendly online lifelong learning platforms, where a required level of nursing informatics competence could be acquired, are two gaps in the current research that should be covered in future. Copyright 2015, SLACK Incorporated.

  20. [Bibliometric indicators of production and usage of Archivos de Bronchoneumologia].

    Science.gov (United States)

    García Río, F; Serrano, S; Alvarez-Sala, R; García Tejero, T; Pino García, J; Alvarez-Sala, J L; Villamor León, J

    1996-01-01

    We studied the bibliometric indexes referring to production and scientific output published in ARCHIVOS de BRONCONEUMOLOGIA. All issues published between 1993 and 1994 were studied with the exception of monógraphic or supplementary numbers. For each article we recorded article type, number of authors, authors' place of work, specialty, time until acceptance, time until publication, type of references, language of references, journal and year of references. For each year we calculated the productivity index and the cooperation index, or index of signers per work. We also determined the citation period for references, the Price index, and the insularity index. Productivity index was 1.97 in 1993 and 2.05 in 1994. The cooperation index for the two years reached 4.5 +/- 1.9 (1-10). Authors were widely distributed by provinces and by specialties, although "nuclei" of production could be identified. The citation half-life period was 5.67 years for references in 1993 and 5.94 years in 1994, and the Price index surpassed 40%. The insularity index was very low at 7.76%. In conclusion, the bibliometric indicators for production, readership and obsolescence for the two years analyzed indicate that ARCHIVOS de BRONCONEUMOLOGIA occupies an intermediate position in the ranking of Spanish medical journals.

  1. Geodesy, a Bibliometric Approach for 2000-2006

    Science.gov (United States)

    Vazquez, G.; Landeros, C. F.

    2007-12-01

    In recent years, bibliometric science has been frequently applied in the development and evaluation of scientific research. This work presents a bibliometric analysis for the research work performed in the field of geodesy "science of the measurement and mapping of the earth surface including its external gravity field". The objective of this work is to present a complete overview of the generated research on this field to assemble and study the most important publications occurred during the past seven years. The analysis was performed including the SCOPUS and WEB OF SCIENCE databases for all the geodetic scientific articles published between 2000 and 2006. The search profile was designed considering a strategy to seek for titles and article descriptors using the terms geodesy and geodetic and some other terms associated with the topics: geodetic surfaces, vertical measurements, reference systems and frames, modern space-geodetic techniques and satellite missions. Some preliminary results had been achieved specifically Bradford law of distribution for journals and education institutes, and Lotka's law for authors that also includes the cooperation between countries in terms of writing together scientific articles. In the particular case of distributions, the model suggested by Egghe (2002) was adopted for determining the cores.

  2. The first Italian research assessment exercise: a bibliometric perspective

    CERN Document Server

    Franceschet, Massimo

    2009-01-01

    In December 2003, seventeen years after the first UK research assessment exercise, Italy started up its first-ever national research evaluation, with the aim to evaluate, using the peer review method, the excellence of the national research production. The evaluation involved 20 disciplinary areas, 102 research structures, 18,500 research products and 6,661 peer reviewers (1,465 from abroad); it had a direct cost of 3.55 millions Euros and a time length spanning over 18 months. The introduction of ratings based on ex post quality of output and not on ex ante respect for parameters and compliance is an important leap forward of the national research evaluation system toward meritocracy. From the bibliometric perspective, the national assessment offered the unprecedented opportunity to perform a large-scale comparison of peer review and bibliometric indicators for an important share of the Italian research production. The present investigation takes full advantage of this opportunity to test whether peer review...

  3. Fullerene data mining using bibliometrics and database tomography

    Science.gov (United States)

    Kostoff; Braun; Schubert; Toothman; Humenik

    2000-01-01

    Database tomography (DT) is a textual database analysis system consisting of two major components: (1) algorithms for extracting multiword phrase frequencies and phrase proximities (physical closeness of the multiword technical phrases) from any type of large textual database, to augment (2) interpretative capabilities of the expert human analyst. DT was used to derive technical intelligence from a fullerenes database derived from the Science Citation Index and the Engineering Compendex. Phrase frequency analysis by the technical domain experts provided the pervasive technical themes of the fullerenes database, and phrase proximity analysis provided the relationships among the pervasive technical themes. Bibliometric analysis of the fullerenes literature supplemented the DT results with author/journal/institution publication and citation data. Comparisons of fullerenes results with past analyses of similarly structured near-earth space, chemistry, hypersonic/supersonic flow, aircraft, and ship hydrodynamics databases are made. One important finding is that many of the normalized bibliometric distribution functions are extremely consistent across these diverse technical domains and could reasonably be expected to apply to broader chemical topics than fullerenes that span multiple structural classes. Finally, lessons learned about integrating the technical domain experts with the data mining tools are presented.

  4. Generalized Warburg impedance on realistic self-affine fractals: Comparative study of statistically corrugated and isotropic roughness

    Indian Academy of Sciences (India)

    Rajesh Kumar; Rama Kant

    2009-09-01

    We analyse the problem of impedance for a diffusion controlled charge transfer process across an irregular interface. These interfacial irregularities are characterized as two class of random fractals: (i) a statistically isotropic self-affine fractals and (ii) a statistically corrugated self-affine fractals. The information about the realistic fractal surface roughness has been introduced through the bandlimited power-law power spectrum over limited wave numbers. The details of power spectrum of such roughness can be characterized in term of four fractal morphological parameters, viz. fractal dimension (), lower (ℓ), and upper () cut-off length scales of fractality, and the proportionality factor () of power spectrum. Theoretical results are analysed for the impedance of such rough electrode as well as the effect of statistical symmetries of roughness. Impedance response for irregular interface is simplified through expansion over intermediate frequencies. This intermediate frequency expansion with sufficient number of terms offers a good approximation over all frequency regimes. The Nyquist plots of impedance show the strong dependency mainly on three surface morphological parameters i.e. , ℓ and . We can say that our theoretical results also provide an alternative explanation for the exponent in intermediate frequency power-law form.

  5. Co-citation Analysis and Co-word Analysis in Bibliometrics Mapping: A Methodological Evaluation

    Directory of Open Access Journals (Sweden)

    Najmeh Salemi

    2014-03-01

    Full Text Available The general aim of a bibliometric map is to provide an overview of the structure of the scientific literature in a certain domain or on a certain topic. In the context of science policy and research management, bibliometric maps can be used to support decision making by governments, funding agencies, and universities. The articles have words and references which are the bibliometric data for co-citation analysis and co-word analysis. We try to find that these two bibliometric approaches show any correlation? We applied these approaches to University of Tehran’ productions published between 1999 and 2008, retrieved from the Web of Science. The results reveals 14 co-citation clusters and 6 co-word clusters. The clusters vary considerably in size. Co-word clusters emerged co-citation clusters.

  6. Bibliometric analysis of literature on female genital mutilation: (1930 – 2015)

    OpenAIRE

    Sweileh, Waleed M.

    2016-01-01

    Background Female genital mutilation/cutting (FGM/C) is a common harmful traditional practice in many communities in Africa and to a lesser extent in Middle East and other regions in the world. In order to better understand publishing on this topic, we conducted a bibliometric study on FGM/C. Bibliometric analyses can be used as an indicator of the extent of interaction of researchers, health authorities, and communities with a particular health issue. Methods Scopus database was used to retr...

  7. On the use of Biplot analysis for multivariate bibliometric and scientific indicators

    OpenAIRE

    Torres-Salinas, Daniel; Robinson-Garc??a, Nicol??s; Jim??nez-Contreras, Evaristo; Herrera, Francisco; Delgado L??pez-C??zar, Emilio

    2013-01-01

    Bibliometric mapping and visualization techniques represent one of the main pillars in the field of scientometrics. Traditionally, the main methodologies employed for representing data are Multi-Dimensional Scaling, Principal Component Analysis or Correspondence Analysis. In this paper we aim at presenting a visualization methodology known as Biplot analysis for representing bibliometric and science and technology indicators. A Biplot is a graphical representation of multivariate data, where ...

  8. Bibliometric mapping: eight decades of analytical chemistry, with special focus on the use of mass spectrometry.

    Science.gov (United States)

    Waaijer, Cathelijn J F; Palmblad, Magnus

    2015-01-01

    In this Feature we use automatic bibliometric mapping tools to visualize the history of analytical chemistry from the 1920s until the present. In particular, we have focused on the application of mass spectrometry in different fields. The analysis shows major shifts in research focus and use of mass spectrometry. We conclude by discussing the application of bibliometric mapping and visualization tools in analytical chemists' research.

  9. Shallow science or meta-cognitive insights: a few thoughts on reflection via bibliometrics.

    Science.gov (United States)

    Holden, Gary; Rosenberg, Gary; Barker, Kathleen

    2005-01-01

    The authors conclude this special issue by responding to the commentaries of their colleagues and reviewing relevant scholarship that appeared in the bibliometric literature since their literature reviews for the initial three articles in this issue were completed. They conclude, in part, that examination of bibliometric data regarding the entry of an article into the profession's knowledge base, and its ongoing life therein, may provide insights about the scientific communication process that lead to improvements of that process.

  10. Bibliometric analyses of publications from Centres of Excellence funded by the Danish National Research Foundation

    DEFF Research Database (Denmark)

    Schneider, Jesper Wiborg; Costas, Rodrigo; Henriksen, Dorte

    2013-01-01

    , the interaction with host institutions, and the governance and management of the DNRF. The evaluation concludes that the DNRF has had a very positive impact on the quality of research in Denmark and recommends that the foundation is re-funded. The evaluation is based on a bibliometric study, self......-assessment report by DNRF, numerous interviews and desk studies. Appendix 5: Bibliometric analyses of publications from Centres of Excellence funded by the Danish National Research Foundation...

  11. [Drifts and pernicious effects of the quantitative evaluation of research: the misuse of bibliometrics].

    Science.gov (United States)

    Gingras, Yves

    2015-06-01

    The quantitative evaluation of scientific research relies increasingly on bibliometric indicators of publications and citations. We present the issues raised by the simplistic use of these methods and recall the dangers of using poorly built indicators and technically defective rankings that do not measure the dimensions they are supposed to measure, for example the of publications, laboratories or universities. We show that francophone journals are particularly susceptible to suffer from the bad uses of too simplistic bibliometric rankings of scientific journals.

  12. Inciting the Metric Oriented Humanist: Teaching Bibliometrics in a Faculty of Humanities

    DEFF Research Database (Denmark)

    Zuccala, Alesia Ann

    2016-01-01

    principles and practices associated with teaching bibliometrics to humanists, with the aim of encouraging students to reflect upon new indicators relevant to scholarly research outputs across the humanities. Emphasis is placed on the “biblio” in bibliometrics (i.e., books), digital record-keeping across...... the humanities, the work of humanists who have sought to explain the development of new knowledge through objective pattern-seeking, and the complementary value of alternative versus traditional indicators of scholarly research performance....

  13. How to develop, validate, and compare clinical prediction models involving radiological parameters: Study design and statistical methods

    Energy Technology Data Exchange (ETDEWEB)

    Han, Kyung Hwa; Choi, Byoung Wook [Dept. of Radiology, and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul (Korea, Republic of); Song, Ki Jun [Dept. of Biostatistics and Medical Informatics, Yonsei University College of Medicine, Seoul (Korea, Republic of)

    2016-06-15

    Clinical prediction models are developed to calculate estimates of the probability of the presence/occurrence or future course of a particular prognostic or diagnostic outcome from multiple clinical or non-clinical parameters. Radiologic imaging techniques are being developed for accurate detection and early diagnosis of disease, which will eventually affect patient outcomes. Hence, results obtained by radiological means, especially diagnostic imaging, are frequently incorporated into a clinical prediction model as important predictive parameters, and the performance of the prediction model may improve in both diagnostic and prognostic settings. This article explains in a conceptual manner the overall process of developing and validating a clinical prediction model involving radiological parameters in relation to the study design and statistical methods. Collection of a raw dataset; selection of an appropriate statistical model; predictor selection; evaluation of model performance using a calibration plot, Hosmer-Lemeshow test and c-index; internal and external validation; comparison of different models using c-index, net reclassification improvement, and integrated discrimination improvement; and a method to create an easy-to-use prediction score system will be addressed. This article may serve as a practical methodological reference for clinical researchers.

  14. [Discussion on disease spectrum treated with acupuncture at shenmen (HT 7) and its compatibility based on bibliometrics].

    Science.gov (United States)

    Feng, Shu-Wei; Zeng, Fang; Ren, Yu-Lan; Liang, Fan-Rong

    2014-06-01

    The modern literatures on the diseases treated with acupuncture at Shenmen (HT 7) were collected. Using literature statistical analysis in bibliometrics, the common compatibility of Shenmen (HT 7) and the disease spectrum were analyzed so as to provide the references of the diseases that can be treated with acupuncture at Shenmen (HT 7). It was found that 39 kinds of diseases and symptoms, mainly nerve system disedses, could be treated with acupuncture at Shenmen (HT 7), including insomnia, depression, anxiety and dementia. Shenmen (HT 7) was seldom used alone. Instead, it was commonly used along with Baihui (GV 20), Sanyinjiao (SP 6), Neiguan (PC 6), Sishencong (EX-HN 1) and Taicong (LR 3).

  15. Rating and Ranking the Role of Bibliometrics and Webometrics in Nursing and Midwifery

    Directory of Open Access Journals (Sweden)

    Patricia M. Davidson

    2014-01-01

    Full Text Available Background. Bibliometrics are an essential aspect of measuring academic and organizational performance. Aim. This review seeks to describe methods for measuring bibliometrics, identify the strengths and limitations of methodologies, outline strategies for interpretation, summarise evaluation of nursing and midwifery performance, identify implications for metric of evaluation, and specify the implications for nursing and midwifery and implications of social networking for bibliometrics and measures of individual performance. Method. A review of electronic databases CINAHL, Medline, and Scopus was undertaken using search terms such as bibliometrics, nursing, and midwifery. The reference lists of retrieved articles and Internet sources and social media platforms were also examined. Results. A number of well-established, formal ways of assessment have been identified, including h- and c-indices. Changes in publication practices and the use of the Internet have challenged traditional metrics of influence. Moreover, measuring impact beyond citation metrics is an increasing focus, with social media representing newer ways of establishing performance and impact. Conclusions. Even though a number of measures exist, no single bibliometric measure is perfect. Therefore, multiple approaches to evaluation are recommended. However, bibliometric approaches should not be the only measures upon which academic and scholarly performance are evaluated.

  16. Assessment and improvement of statistical tools for comparative proteomics analysis of sparse data sets with few experimental replicates

    DEFF Research Database (Denmark)

    Schwämmle, Veit; León, Ileana R.; Jensen, Ole Nørregaard

    2013-01-01

    Large-scale quantitative analyses of biological systems are often performed with few replicate experiments, leading to multiple nonidentical data sets due to missing values. For example, mass spectrometry driven proteomics experiments are frequently performed with few biological or technical...... changes on the peptide level, for example, in phospho-proteomics experiments. In order to assess the extent of this problem and the implications for large-scale proteome analysis, we investigated and optimized the performance of three statistical approaches by using simulated and experimental data sets...... with varying numbers of missing values. We applied three tools, including standard t test, moderated t test, also known as limma, and rank products for the detection of significantly changing features in simulated and experimental proteomics data sets with missing values. The rank product method was improved...

  17. Assessment and improvement of statistical tools for comparative proteomics analysis of sparse data sets with few experimental replicates.

    Science.gov (United States)

    Schwämmle, Veit; León, Ileana Rodríguez; Jensen, Ole Nørregaard

    2013-09-06

    Large-scale quantitative analyses of biological systems are often performed with few replicate experiments, leading to multiple nonidentical data sets due to missing values. For example, mass spectrometry driven proteomics experiments are frequently performed with few biological or technical replicates due to sample-scarcity or due to duty-cycle or sensitivity constraints, or limited capacity of the available instrumentation, leading to incomplete results where detection of significant feature changes becomes a challenge. This problem is further exacerbated for the detection of significant changes on the peptide level, for example, in phospho-proteomics experiments. In order to assess the extent of this problem and the implications for large-scale proteome analysis, we investigated and optimized the performance of three statistical approaches by using simulated and experimental data sets with varying numbers of missing values. We applied three tools, including standard t test, moderated t test, also known as limma, and rank products for the detection of significantly changing features in simulated and experimental proteomics data sets with missing values. The rank product method was improved to work with data sets containing missing values. Extensive analysis of simulated and experimental data sets revealed that the performance of the statistical analysis tools depended on simple properties of the data sets. High-confidence results were obtained by using the limma and rank products methods for analyses of triplicate data sets that exhibited more than 1000 features and more than 50% missing values. The maximum number of differentially represented features was identified by using limma and rank products methods in a complementary manner. We therefore recommend combined usage of these methods as a novel and optimal way to detect significantly changing features in these data sets. This approach is suitable for large quantitative data sets from stable isotope labeling

  18. Bibliometric analysis of literature on female genital mutilation: (1930 - 2015).

    Science.gov (United States)

    Sweileh, Waleed M

    2016-10-10

    Female genital mutilation/cutting (FGM/C) is a common harmful traditional practice in many communities in Africa and to a lesser extent in Middle East and other regions in the world. In order to better understand publishing on this topic, we conducted a bibliometric study on FGM/C. Bibliometric analyses can be used as an indicator of the extent of interaction of researchers, health authorities, and communities with a particular health issue. Scopus database was used to retrieve data on FGM/C. Keywords used were "female genital mutilation", "female genital circumcision", "female genital cutting" and "female circumcision". Specifically, the number of publications, top productive countries and institutions, highly cited articles, citation analysis, co-authorships, international collaboration, role of African countries, top active authors, and journals involved in publishing articles on FGM/C were reviewed and analyzed. We indirectly assessed the impact of publications using total number of citations received, average number of citations per article, Hirsch-index, percentage of highly cited articles, and journal's impact factor. One thousand and thirty-five publications on FGM/C were retrieved. The h-index of retrieved articles was 37. A steep rise in number of publications was noticed in mid-1990s and again in 2012. More than half of retrieved articles were published from 2006 - 2015. A total of 65 countries contributed. The top ten productive countries included ones from Northern America, Europe and Africa. Nigeria and Egypt were the most active African countries in FGM/C publications. At least nine African academic institutions were actively involved on FGM/C publications. Articles on FGM/C that received the highest number of citations were those that focused on negative physical and psychosexual consequences of FGM/C. Journal topic areas were obstetrics/gynecology, public health, and psychological sociology. Collaboration between African and European countries on

  19. Brazilian scientific literature on alcohol and other drugs: a bibliometric study

    Directory of Open Access Journals (Sweden)

    Gustavo Luis Caribé Cerqueira

    2016-03-01

    Full Text Available It is a bibliometric study that aimed to quantify and describe the characteristics of scientific literature on alcohol and other drugs in Brazilian universities from 2003 to 2012. The study involved the pursuit of doctoral dissertation abstracts and master's theses deposited in the Bank CAPES theses. By applying mathematical and statistical methods on literature sources were analyzed a total of 350 abstracts of theses and dissertations of 739 abstracts. All references found were systematized in software spreadsheet Statiscal Package Social Science (SPSS version 15.0 according to the following variables: type of study (Masters or PhD, publication year, area of expertise, geographic region and educational institution higher. This study showed that most of the scientific literature on the topic of alcohol and other drugs developed in the investigated period occurred in the dissertations format, with the highest concentration of studies in the Southeast, traditional focal point of scientific research in various fields. Further investigations are important to deepen the analysis of academic productions collected in addition to the summaries, contributing to a more detailed verification of the research profile, dissertation and thesis character, developed in the country

  20. Analysis of bibliometric indicators for individual scholars in a large data set

    CERN Document Server

    Radicchi, Filippo

    2013-01-01

    Citation numbers and other quantities derived from bibliographic databases are becoming standard tools for the assessment of productivity and impact of research activities. Though widely used, still their statistical properties have not been well established so far. This is especially true in the case of bibliometric indicators aimed at the evaluation of individual scholars, because large-scale data sets are typically difficult to be retrieved. Here, we take advantage of a recently introduced large bibliographic data set, Google Scholar Citations, which collects the entire publication record of individual scholars. We analyze the scientific profile of more than 30,000 researchers, and study the relation between the h-index, the number of publications and the number of citations of individual scientists. While the number of publications of a scientist has a rather weak relation with his/her h-index, we find that the h-index of a scientist is strongly correlated with the number of citations that she/he has rece...

  1. Statistical methods for detecting and comparing periodic data and their application to the nycthemeral rhythm of bodily harm: A population based study

    LENUS (Irish Health Repository)

    Stroebel, Armin M

    2010-11-08

    Abstract Background Animals, including humans, exhibit a variety of biological rhythms. This article describes a method for the detection and simultaneous comparison of multiple nycthemeral rhythms. Methods A statistical method for detecting periodic patterns in time-related data via harmonic regression is described. The method is particularly capable of detecting nycthemeral rhythms in medical data. Additionally a method for simultaneously comparing two or more periodic patterns is described, which derives from the analysis of variance (ANOVA). This method statistically confirms or rejects equality of periodic patterns. Mathematical descriptions of the detecting method and the comparing method are displayed. Results Nycthemeral rhythms of incidents of bodily harm in Middle Franconia are analyzed in order to demonstrate both methods. Every day of the week showed a significant nycthemeral rhythm of bodily harm. These seven patterns of the week were compared to each other revealing only two different nycthemeral rhythms, one for Friday and Saturday and one for the other weekdays.

  2. Irish neonatal mortality statistics for 2004 and over the past 17 years: how do we compare internationally?

    LENUS (Irish Health Repository)

    Fleming, P

    2012-02-01

    In the past 17 years neonatal mortality survey has provided important data on the trends in deaths of all live born infants born in Southern Ireland who are greater than 500 g birth weight and who die within the first 28 days of life. The aims of this study were to report neonatal mortality data for Southern Ireland for 2004, to examine trends in neonatal mortality over the past 17 years and compare Irish Neonatal Mortality rates to other countries around the world. The neonatal mortality rate for 2004 was 2.9\\/1000 with a corrected NMR of 1.9\\/1000. The response rate to the survey was 100%. Prematurity is now the leading cause of neonatal mortality representing a change from previous years. Deaths related to asphyxia have remained largely unchanged. When compared to international figures Ireland compares favourably to other countries around the world.

  3. Network-based statistical comparison of citation topology of bibliographic databases

    Science.gov (United States)

    Šubelj, Lovro; Fiala, Dalibor; Bajec, Marko

    2014-09-01

    Modern bibliographic databases provide the basis for scientific research and its evaluation. While their content and structure differ substantially, there exist only informal notions on their reliability. Here we compare the topological consistency of citation networks extracted from six popular bibliographic databases including Web of Science, CiteSeer and arXiv.org. The networks are assessed through a rich set of local and global graph statistics. We first reveal statistically significant inconsistencies between some of the databases with respect to individual statistics. For example, the introduced field bow-tie decomposition of DBLP Computer Science Bibliography substantially differs from the rest due to the coverage of the database, while the citation information within arXiv.org is the most exhaustive. Finally, we compare the databases over multiple graph statistics using the critical difference diagram. The citation topology of DBLP Computer Science Bibliography is the least consistent with the rest, while, not surprisingly, Web of Science is significantly more reliable from the perspective of consistency. This work can serve either as a reference for scholars in bibliometrics and scientometrics or a scientific evaluation guideline for governments and research agencies.

  4. Network-based statistical comparison of citation topology of bibliographic databases

    Science.gov (United States)

    Šubelj, Lovro; Fiala, Dalibor; Bajec, Marko

    2014-01-01

    Modern bibliographic databases provide the basis for scientific research and its evaluation. While their content and structure differ substantially, there exist only informal notions on their reliability. Here we compare the topological consistency of citation networks extracted from six popular bibliographic databases including Web of Science, CiteSeer and arXiv.org. The networks are assessed through a rich set of local and global graph statistics. We first reveal statistically significant inconsistencies between some of the databases with respect to individual statistics. For example, the introduced field bow-tie decomposition of DBLP Computer Science Bibliography substantially differs from the rest due to the coverage of the database, while the citation information within arXiv.org is the most exhaustive. Finally, we compare the databases over multiple graph statistics using the critical difference diagram. The citation topology of DBLP Computer Science Bibliography is the least consistent with the rest, while, not surprisingly, Web of Science is significantly more reliable from the perspective of consistency. This work can serve either as a reference for scholars in bibliometrics and scientometrics or a scientific evaluation guideline for governments and research agencies. PMID:25263231

  5. Social Representations in Psychology: A Bibliometrical Analysis

    Directory of Open Access Journals (Sweden)

    Eicher, V

    2011-10-01

    Full Text Available In this paper, we analyse the evolution of social representations theory (SRT over time, languages, and journals by comparing it with the evolution of social identity theory (SIT. Additionally, we perform a lexical analysis of abstracts on SRT and discuss the changes of topics over time and languages. While SRT is less represented in mainstream journals of social psychology than SIT, it is more widely distributed across linguistic areas, as shown by the relative frequency of different languages. Two major research domains often associated with SRT are health issues and intergroup dynamics. Papers concentrating on SRT as a theoretical approach are more recent and primarily written in English, while French-language papers focus less on theoretical aspects. While SRT is diverse and recognized in social psychology, it is not as widely known as other social psychological theories (e.g., SIT. We conclude with thoughts on how to promote wider integration of SRT with mainstream social psychology.

  6. Marketing and strategic management in hotel industry: A bibliometrics study

    Directory of Open Access Journals (Sweden)

    Edegar Luis Tomazzoni

    2013-04-01

    Full Text Available Despite doubts and questions about its theoretical consistency, tourism studies tend to be consolidated as scientific field. The production of studies about hotel industry as essential activity of tourism is recent, but stands out important epistemological organizational spaces. This paper analyzes the production of knowledge and contributions to the scientific studies advancement in marketing and strategic hospitality management through articles published by the leading academic journals of tourism in Brazil. The method adopted was the bibliometrics research. Among the 552 articles published between April 2008 and August 2012, 64 were about hotel industry, sixteen of them grounded in marketing and nine in strategy. The studies show the complexity of the strategic management and marketing of hotel firms and provide to academic researchers, managers and professionals in hospitality reflections of the importance of the knowledge of this area.

  7. A bibliometric study on SCRUM approach: patterns, trends and gaps

    Directory of Open Access Journals (Sweden)

    Antônio Carlos Bonassa

    2016-09-01

    Full Text Available After Agile Manifesto success in the software development arena, the literature on Agile methods, particularly SCRUM has increased. This study aims to present a systematic literature review of SCRUM literature, identifying the main evolution patterns, trends, and gaps. The research methods combine the bibliometric approach with content analysis. The results show that despite the increase interesting on agile methods, SCRUM utilization is decreasing and/or being replaced by another project management method and it face so strong barriers to expanding in other sectors than software. The main advantages of applying SCRUM pointed out in the review are increase customer satisfaction at the same time that reduced associated costs and development time.

  8. The Bibliometric Analysis Of Literature On Museum Studies

    Science.gov (United States)

    Kuo, C. W.; Yang, Y. H.

    2015-08-01

    Museum studies, is the study of museums, museum curation, and how and why museums developed into their institutional role in education and culture through scientific, social, political and other related forces. The purpose of this study is to shed light on the application trends of the international literature related to museum studies on the SCIE, SSCI, and AHCI databases between 1995 and 2014 using a bibliometric technique and citation analysis. The results of this study reveal that influences of the literature related to museum studies on other subject areas continue to expand. Considering the publication of major countries, subject areas, journal and institutions, the results also discussed that the future trend through analysing most cited articles. Moreover, 12 core journal lists are identified by Bradford's law.

  9. Electrochemical power text mining using bibliometrics and database tomography

    Science.gov (United States)

    Kostoff, Ronald N.; Tshiteya, Rene; Pfeil, Kirstin M.; Humenik, James A.

    Database tomography (DT) is a textual database analysis system consisting of two major components: (1) algorithms for extracting multi-word phrase frequencies and phrase proximities (physical closeness of the multi-word technical phrases) from any type of large textual database, to augment (2) interpretative capabilities of the expert human analyst. DT was used to derive technical intelligence from an electrochemical power database derived from the science citation index (SCI). Phrase frequency analysis by the technical domain experts provided the pervasive technical themes of the electrochemical power database, and the phrase proximity analysis provided the relationships among the pervasive technical themes. Bibliometric analysis of the electrochemical power literature supplemented the DT results with author/journal/institution publication and citation data.

  10. Physics in Cuba from the Perspective of Bibliometrics

    Science.gov (United States)

    Marx, Werner; Cardona, Manuel

    We present a bibliometric analysis of the development of the physical sciences in Cuba since the revolution of 1959. We analyze, using available databases (Web of Science, Essential Science Indicators, INSPEC), the development of the output (number of publications of authors based in Cuba) and of their impact (number of citations) from 1959 until now. We discuss the productivity of Cuba in comparison to the Latin American sister republics and the collaborative efforts between Cuba and highly developed countries. The most important areas of scientific activity within the field of physics, the preferred journals and the leading affiliations are identified. The most frequently cited Cuban physics publications are given. Finally, the overall scientific ranking of Cuba among the world nations is investigated.

  11. On the calculation of percentile-based bibliometric indicators

    CERN Document Server

    Waltman, Ludo

    2012-01-01

    A percentile-based bibliometric indicator is an indicator that values publications based on their position within the citation distribution of their field. The most straightforward percentile-based indicator is the proportion of frequently cited publications, for instance the proportion of publications that belong to the top 10% most frequently cited of their field. Recently, more complex percentile-based indicators were proposed. A difficulty in the calculation of percentile-based indicators is caused by the discrete nature of citation distributions combined with the presence of many publications with the same number of citations. We introduce an approach to calculating percentile-based indicators that deals with this difficulty in a more satisfactory way than earlier approaches suggested in the literature. We show in a formal mathematical framework that our approach leads to indicators that do not suffer from biases in favor of or against particular fields of science.

  12. Power source roadmaps using bibliometrics and database tomography

    Energy Technology Data Exchange (ETDEWEB)

    Kostoff, R.N.; Pfeil, K.M. [Office of Naval Research, Arlington, VA (United States); Tshiteya, R. [DDL OMNI Engineering, Mclean, VA (United States); Humenik, J.A. [Noesis Inc., Manassas, VA (United States); Karypis, G. [University of Minnesota, Minneapolis, MN (United States). Computer Science and Engineering Dept.

    2005-04-01

    Database Tomography (DT) is a textual database analysis system consisting of two major components: (1) algorithms for extracting multi-word phrase frequencies and phrase proximities (physical closeness of the multi-word technical phrases) from any type of large textual database, to augment (2) interpretative capabilities of the expert human analyst. DT was used to derive technical intelligence from a Power Sources database derived from the Science Citation Index. Phrase frequency analysis by the technical domain experts provided the pervasive technical themes of the Power Sources database, and the phrase proximity analysis provided the relationships among the pervasive technical themes. Bibliometric analysis of the Power Sources literature supplemented the DT results with author/journal/institution/country publication and citation data. (author)

  13. Bioengineering of Dental Tissues: Bibliometric Analysis 2000-2011.

    Directory of Open Access Journals (Sweden)

    Sebastián Zamorano

    2014-03-01

    Full Text Available Introduction: There has been a noticeable increase in experimental use and therapies based on stem cells over recent years. Nevertheless, there is a lack of information about this progress in the dental field, which makes it difficult to trace development and design policies. The purpose of this study, as a first approach to the subject, is to determine a bibliometric profile for the investigation related to bioengineering of dental tissue at a worldwide scale, based on the MEDLINE database, for the period 2000-2011. Methodology: A bibliometric study was carried out. Every article indexed in the MEDLINE database and associated with the terms “stem cells” and “tooth regeneration” for the period 2000-2011 was included. The analyzed variables were publishing date, country of origin, language and publication type (original or review, journal, author, associated university and tissue source (human or animal. Results: For the entire period included in the study, 257 articles were found. Of these, 149 corresponded to original Works published in English; 5 in other languages; 92 comprised literature reviews in English, 9 in other languages and 2 publications were included in the “others” category. The countries with the highest research productivity were the United States (24.51%, Japan (20.62% and China (17.90%, while Brazil (3.9% was the only Latin-American country found in the list. Animal tissues were used in 59.09% of them. The most productive authors were Ueda M (17 and Jin Y (11, whereas Fourth Military University (13, University of Tokyo (12 and Capital Medical University (10 had the largest number of publications. Conclusion: The United States, Japan and China concentrate about two thirds of the production. Latin-America was represented only by Brazil.

  14. A comparative study of seismicity statistics in laboratory stick-slip experiments and nature: Implications for fault mechanics

    Science.gov (United States)

    Goebel, Thomas; Kwiatek, Grzegorz; Becker, Thorsten; Sammis, Charles; Dresen, Georg

    2016-04-01

    Fault properties can rarely be monitored under in-situ conditions at seismogenic depth. At these depths seismicity records are possibly the only high-resolution data that can provide insight into state of stress and mechanics of faulting. We analyze series of laboratory experiments on faults that developed during stick-slip on saw-cut and fractured surfaces under upper crustal stress conditions. Stick-slip experiments were performed on surfaces with varying roughness and fracture surfaces that evolved into fault zones with pronounced damage zones. We monitor and analyze acoustic emission events that exhibit many striking similarities to natural seismicity across all examined scales. These similarities include pronounced Gutenberg-Richter-type magnitude distributions, Omori-type aftershock decay, and off-fault seismicity distributions that decay as a power law with distance. In the laboratory, fault roughness and heterogeneity are critical in concentrating stresses that lead to local AE clustering, and differences in off-fault activities and lower b-values. Similar observations of earthquake clustering and b-value variations were made for natural faults such as the Parkfield segment of the San Andreas fault. In addition to seismicity statistics, we conducted a detailed analysis of moment tensors, focusing on relative contributions from isotropic and deviatoric components to laboratory seismicity. In contrast to natural seismicity, our results revealed a larger contribution from isotropic components. These contributions are a result of ongoing fracture processes within the evolving fault which are most pronounced after stick-slip events. Our study shows, that seismicity analyses in laboratory experiments can significantly advance our understanding of fault mechanics from the scale of single asperities to large fault zones.

  15. Adaptive Statistical Iterative Reconstruction-Applied Ultra-Low-Dose CT with Radiography-Comparable Radiation Dose: Usefulness for Lung Nodule Detection.

    Science.gov (United States)

    Yoon, Hyun Jung; Chung, Myung Jin; Hwang, Hye Sun; Moon, Jung Won; Lee, Kyung Soo

    2015-01-01

    To assess the performance of adaptive statistical iterative reconstruction (ASIR)-applied ultra-low-dose CT (ULDCT) in detecting small lung nodules. Thirty patients underwent both ULDCT and standard dose CT (SCT). After determining the reference standard nodules, five observers, blinded to the reference standard reading results, independently evaluated SCT and both subsets of ASIR- and filtered back projection (FBP)-driven ULDCT images. Data assessed by observers were compared statistically. Converted effective doses in SCT and ULDCT were 2.81 ± 0.92 and 0.17 ± 0.02 mSv, respectively. A total of 114 lung nodules were detected on SCT as a standard reference. There was no statistically significant difference in sensitivity between ASIR-driven ULDCT and SCT for three out of the five observers (p = 0.678, 0.735, Adaptive statistical iterative reconstruction-driven ULDCT delivering a radiation dose of only 0.17 mSv offers acceptable sensitivity in nodule detection compared with SCT and has better performance than FBP-driven ULDCT.

  16. Bibliometric Indicators of Russian Journals by JCR-Science Edition, 1995-2010.

    Science.gov (United States)

    Libkind, A N; Markusova, V A; Mindeli, L E

    2013-07-01

    A representative empirical bibliometric analysis of Russian journals included in the Journal Citation Reports-Science Edition (JCR-SE) for the time period 1995-2010 was conducted at the macro level (excluding the subject categories). It was found that the growth in the number of articles covered by JCR (a 1.8-fold increase compared to 1995) is ahead of the growth rates of Russian publications (1.2-fold increase). Hence, the share of Russian articles covered by JCR-SE was down from 2.5% in 1995 to 1.7% in 2010. It was determined that the number of articles published in an average Russian journal reduced by 20% as compared to the number of articles in an average journal of the full data set. These facts could partly shed light on the question why Russian research performance is staggering (approximately 30,000 articles per year), although the coverage of Russian journals has expanded to 150 titles. Over the past 15 years, a twofold increase in the impact factor of the Russian journals has been observed, which is higher than that for the full data set of journals (a 1.4-fold increase). Measures to improve the quality of Russian journals are proposed.

  17. Multiparametric statistics

    CERN Document Server

    Serdobolskii, Vadim Ivanovich

    2007-01-01

    This monograph presents mathematical theory of statistical models described by the essentially large number of unknown parameters, comparable with sample size but can also be much larger. In this meaning, the proposed theory can be called "essentially multiparametric". It is developed on the basis of the Kolmogorov asymptotic approach in which sample size increases along with the number of unknown parameters.This theory opens a way for solution of central problems of multivariate statistics, which up until now have not been solved. Traditional statistical methods based on the idea of an infinite sampling often break down in the solution of real problems, and, dependent on data, can be inefficient, unstable and even not applicable. In this situation, practical statisticians are forced to use various heuristic methods in the hope the will find a satisfactory solution.Mathematical theory developed in this book presents a regular technique for implementing new, more efficient versions of statistical procedures. ...

  18. The Top 100 Articles in the Medical Informatics: a Bibliometric Analysis.

    Science.gov (United States)

    Nadri, Hamed; Rahimi, Bahlol; Timpka, Toomas; Sedghi, Shahram

    2017-08-19

    The number of citations that a research paper receives can be used as a measure of its scientific impact. The objective of this study was to identify and to examine the characteristics of top 100 cited articles in the field of Medical Informatics based on data acquired from the Thomson Reuters' Web of Science (WOS) in October, 2016. The data was collected using two procedures: first we included articles published in the 24 journals listed in the "Medical Informatics" category; second, we retrieved articles using the key words: "informatics", "medical informatics", "biomedical informatics", "clinical informatics" and "health informatics". After removing duplicate records, articles were ranked by the number of citations they received. When the 100 top cited articles had been identified, we collected the following information for each record: all WOS database citations, year of publication, journal, author names, authors' affiliation, country of origin and topics indexed for each record. Citations for the top 100 articles ranged from 346 to 7875, and citations per year ranged from 11.12 to 525. The majority of articles were published in the 2000s (n=43) and 1990s (n=38). Articles were published across 10 journals, most commonly Statistics in medicine (n=71) and Medical decision making (n=28). The articles had an average of 2.47 authors. Statistics and biostatistics modeling was the most common topic (n=71), followed by artificial intelligence (n=12), and medical errors (n=3), other topics included data mining, diagnosis, bioinformatics, information retrieval, and medical imaging. Our bibliometric analysis illustrated a historical perspective on the progress of scientific research on Medical Informatics. Moreover, the findings of the current study provide an insight on the frequency of citations for top cited articles published in Medical Informatics as well as quality of the works, journals, and the trends steering Medical Informatics.

  19. A Comparative Study of 2D PCA Face Recognition Method with Other Statistically Based Face Recognition Methods

    Science.gov (United States)

    Senthilkumar, R.; Gnanamurthy, R. K.

    2016-09-01

    In this paper, two-dimensional principal component analysis (2D PCA) is compared with other algorithms like 1D PCA, Fisher discriminant analysis (FDA), independent component analysis (ICA) and Kernel PCA (KPCA) which are used for image representation and face recognition. As opposed to PCA, 2D PCA is based on 2D image matrices rather than 1D vectors, so the image matrix does not need to be transformed into a vector prior to feature extraction. Instead, an image covariance matrix is constructed directly using the original image matrices and its Eigen vectors are derived for image feature extraction. To test 2D PCA and evaluate its performance, a series of experiments are performed on three face image databases: ORL, Senthil, and Yale face databases. The recognition rate across all trials higher using 2D PCA than PCA, FDA, ICA and KPCA. The experimental results also indicated that the extraction of image features is computationally more efficient using 2D PCA than PCA.

  20. The use of percentiles and percentile rank classes in the analysis of bibliometric data: Opportunities and limits

    NARCIS (Netherlands)

    Bornmann, L.; Leydesdorff, L.; Mutz, R.

    2013-01-01

    Percentiles have been established in bibliometrics as an important alternative to mean-based indicators for obtaining a normalized citation impact of publications. Percentiles have a number of advantages over standard bibliometric indicators used frequently: for example, their calculation is not bas

  1. Just pimping the CV? The feasibility of ready-to-use bibliometric indicators to enrich cirriculum vitae

    DEFF Research Database (Denmark)

    Wildgaard, Lorna Elizabeth

    This poster investigates if ready-to-use bibliometric indicators can be used by individual scholars to enrich their curriculum vitae. Selected indicators were tested in four different fields and across 5 different academic seniorities. The results show performance in bibliometric evaluation...

  2. Journal bibliometrics indicators and citation ethics: a discussion of current issues.

    Science.gov (United States)

    Huggett, Sarah

    2013-10-01

    Science has recently been accelerating at a fast rate, resulting in what has been called "information overload" and more recently "filter failure". In this perspective, journal performance indicators can play an important role in journal evaluation. Opinions on the appropriate use of journal-level bibliometrics indicators can be divided but they have now long been used as measures in research evaluation, and many editors see it as part of their editorial duty to try and improve bibliometrics indicators and rankings for their journal. There are various techniques through which this can be attempted, some more ethical than others. Some editors may try to boost the bibliometrics performance of their journals through gratuitous citations. This is problematic because citations are meant to provide useful references, scientifically justifiable, to previously published literature. As such citations can be used as widely accepted measures of scientific impact. Therefore, superfluous citations can distort the validity of bibliometrics indicators. It might be tempting to try to improve a journal's bibliometrics rankings at all costs, but these are only as meaningful as the data that feed into them. Exceedingly inflated indicators due to unethical behaviours can damage the reputation of a journal and its editors, and can lead to a loss of quality manuscript submissions, which in turn is likely to affect the journal's future citation impact.

  3. An agent-based model for the bibliometric h-index

    Science.gov (United States)

    Ionescu, Georgia; Chopard, Bastien

    2013-10-01

    We model a virtual scientific community in which authors publish and cite articles. Citations are attributed according to a preferential attachment mechanism. From the numerical simulations, the h-index can be computed. This bottom-up approach reproduces well real bibliometric data. We consider two versions of our model. (1) The single-scientist is controlled by two parameters which can be tuned to reproduce the value of the h-index of many real scientists. Moreover, this model shows how the h-index grows with the number of citations, for a fixed number of articles. We also define an average h-index that can be used to compare the scientific productivity of institutions of different sizes. (2) The multi-scientist model considers a population of scientists and allows us to study the impact of removing citations from the low h-index researchers on the community. Simulations on real bibilometric data, as well as the predictions of the model, show that the h-index eco-system can be strongly affected by such a filtering.

  4. Taking a Snapshot: Four Bibliometric Indicators to Track Engineering Education Research Evolution

    Directory of Open Access Journals (Sweden)

    Bill Williams

    2014-10-01

    Full Text Available In recent years, as engineering education research has evolved as an area of study, questions of its disciplinary status, global reach and diffusion of educational innovation have been raised. Bibliometric analysis, mainly employing author affiliation data and citation analysis, has been shown to be effective in gathering relevant data on these issues. In this paper we broaden the scope of previous analyses by introducing reference discipline as an indicator. Our study presents data on 169 articles published in seven EER journals in 2011 based on the use of four indicators: citation analysis, reference discipline, author geographical location and author disciplinary field data. In addition, to demonstrate the value of this approach in establishing benchmarks for longitudinal research, we compare the citation analysis data for the 7 journals in 2011 with a similar sample from the same journals in 2009. The portrait that emerges is rich and complex one and it shows the existence of some silos - disciplinary silos and to a lesser extent geographical silos.

  5. Worldwide research productivity in the field of rheumatology from 1996 to 2010: a bibliometric analysis.

    Science.gov (United States)

    Cheng, Tao; Zhang, Guoyou

    2013-09-01

    Bibliometric studies concerning the quantity and quality of articles published in rheumatology journals are scarce. This study aims to compare scientific production in the field of rheumatology between countries and evaluate the publication trend and citations worldwide. Articles published in 39 rheumatology journals from 1996 to 2010 were screened using the Scopus database. The number of articles, citations, Hirsch indices (h-indices) and international collaborations were determined for countries or regions. Publication activity was adjusted for the top 35 countries categorized by population size and gross domestic product (GDP). RESULTS; A total of 43 808 articles were identified. The time trend of the number of articles showed an increase of 2.95-fold between 1996 and 2010. Western Europe and northern America were the most productive world areas, producing 52.4% and 23.1% of the available literature, respectively. The USA published the most articles, followed by the UK and Germany. The USA, the UK and the Netherlands had the highest h-indices (169, 137 and 117, respectively) and ranked about the same when total citations were used. However, Ireland had the highest average citations per article (48.33), followed by Denmark (40.19) and the Netherlands (39.86). Positive associations between the total number of publications/citations and population/GDP were observed (P rheumatology. However, some smaller European countries have high scientific output relative to their size.

  6. Bibliometric analysis of publications on Campylobacter: (2000-2015).

    Science.gov (United States)

    Sweileh, Waleed M; Al-Jabi, Samah W; Sawalha, Ansam F; AbuTaha, Adham S; Zyoud, Sa'ed H

    2016-11-29

    Campylobacter species are widespread zoonotic pathogens. Campylobacter jejuni causes a form of gastroenteritis called campylobacteriosis. Campylobacter drug resistance is considered a serious threat. In order to better understand national and international research output on Campylobacter, we conducted this bibliometric overview of publications on Campylobacter. This study can be used to assess extent of interaction and response of researchers, food regulators, and health policy makers to global burden of campylobacateriosis. Scopus database was used to retrieve publications with the following keywords (Campylobacter/campylobacteriosis, C. jejuni, C. coli). The study period was set from 2000 to 2015. All types of journal documents, excluding errata, were considered. Bibliometric indicators such as annual growth of publications, country contribution, international collaboration, and citation analysis were presented. The quality of retrieved data was indirectly assessed by Hirsch index and impact factor of journals. A total of 5522 documents were retrieved with median (Q1-Q3) citations of 9 (2-23) and h-index of 113. Annual number of publications showed a fluctuating increase. The core leading journals were Applied and Environmental Microbiology journal and Journal of Food Protection with 246 (4.46%) publications for each. The USA (1309; 23.6%) was the most productive country while Danmarks Tekniske Universitet (150; 2.7%) was the most productive institution. Half of the top ten productive countries were European. France had the lowest percentage (33.5%) of articles with international collaboration while Netherlands (57.7%) had the highest percentage of articles with international collaboration. Approximately half (50.1%) of retrieved articles were published in journals under the subject area of "immunology/microbiology". Main themes in highly cited articles were molecular biology/genetics and public health burden of campylobacteriosis. There were 728 (13

  7. Neuroimaging diagnosis for cerebral infarction An 8-year bibliometric analysis

    Institute of Scientific and Technical Information of China (English)

    Yan Du; Xiaoxia Yang; Hong Song; Bo Chen; Lin Li; Yue Pan; Qiong Wu; Jia Li

    2012-01-01

    OBJECTIVE:To identify global research trends in neuroimaging diagnosis for cerebral infarction using a bibliometric analysis of the Web of Science.DATA RETRIEVAL:We performed a bibliometric analysis of data retrieval for neuroimaging diagnosis for cerebral infarction containing the key words "CT,magnetic resonance imaging,MRI,transcranial Doppler,transvaginal color Doppler,digital subtraction angiography,and cerebral infarction" using the Web of Science.SELECTION CRITERIA:Inclusion criteria were:(a) peer-reviewed articles on neuroimaging diagnosis for cerebral infarction which were published and indexed in the Web of Science; (b) original research articles and reviews; and (c) publication between 2004-2011.Exclusion criteria were:(a) articles that required manual searching or telephone access; and (b) corrected papers or book chapters.MAIN OUTCOME MEASURES:(1)Annual publication output; (2) distribution according to country;(3) distribution according to institution; (4) top cited publications; (5) distribution according to journals; and (6) comparison of study results on neuroimaging diagnosis for cerebral infarction.RESULTS:Imaging has become the predominant method used in diagnosing cerebral infarction.The most frequently used clinical imaging methods were digital subtraction angiography,CT,MRI,and transcranial color Doppler examination.Digital subtraction angiography is used as the gold standard.However,it is a costly and time-consuming invasive diagnosis that requires some radiation exposure,and is poorly accepted by patients.As such,it is mostly adopted in interventional therapy in the clinic.CT is now accepted as a rapid,simple,and reliable non-invasive method for use in diagnosis of cerebrovascular disease and preoperative appraisal.Ultrasonic Doppler can be used to reflect the hardness of the vascular wall and the nature of the plaque more clearly than CT and MRI.CONCLUSION:At present,there is no unified standard of classification of cerebral infarction

  8. A review of the characteristics of 108 author-level bibliometric indicators

    DEFF Research Database (Denmark)

    Wildgaard, Lorna; Schneider, Jesper Wiborg; Larsen, Birger

    2014-01-01

    of publication activity at the individual level. This paper reviews 108 indicators that can potentially be used to measure performance on individual author-level, and examines the complexity of their calculations in relation to what they are supposed to reflect and ease of end-user application. As such we......An increasing demand for bibliometric assessment of individuals has led to a growth of new bibliometric indicators as well as new variants or combinations of established ones. The aim of this review is to contribute with objective facts about the usefulness of bibliometric indicators of the effects...... provide a schematic overview of author-level indicators, where the indicators are broadly categorised into indicators of publication count, indicators that qualify output (on the level of the researcher and journal), indicators of the effect of output (effect as citations, citations normalized to field...

  9. An analysis of bibliometric indicators to JCR according to Benford's law.

    Science.gov (United States)

    Alves, Alexandre Donizeti; Yanasse, Horacio Hideki; Soma, Nei Yoshihiro

    Journal Citation Reports (JCR) is the main source of bibliometric indicators known by the scientific community. This paper presents the results of a study of the distributions of the first and second significant digits according to Benford's law (BL) of the number of articles, citations, impact factors, half-life and immediacy index bibliometric indicators in journals indexed in the JCR Sciences and Social Sciences Editions from 2007 to 2014. We also performed the data analysis to country's origin and by journal's category, and we verified that the second digit has a better adherence to BL. The use of the second digit is important since it provides a more sound, complete and consistent analysis of the bibliometric indicators.

  10. International benchmarks for academic library use of bibliometrics & altmetrics 2016-17

    CERN Document Server

    2016-01-01

    This study presents data from 20 predominantly research universities in the USA, continental Europe, the UK, Canada and Australia/New Zealand. Among the survey participants are: Carnegie Mellon, Cambridge University, Universitat Politècnica de Catalunya the University at Albany, the University of Melbourne, Florida State University, the University of Alberta and Victoria University of Wellington. The report gives detailed data on the use of various bibliometric and altmetric tools such as Google Scholar, Web of Science, Scimago, Plum Analytics, and many, many others. The 114-page report presents detailed information on staffing, budgets, marketing, and sources of demand, technology and other factors in bibliometric and altmetric service development. Just a few of the report’s many findings are that: • Institutions cited by survey participants for excellence in bibliometrics or altmetrics were: Georgia State University, Yale University, the University of New South Wales, the National Library of Medicine a...

  11. Anatomy of the ICDS series: A bibliometric analysis

    Energy Technology Data Exchange (ETDEWEB)

    Cardona, Manuel [Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart (Germany)], E-mail: m.cardona@fkf.mpg.de; Marx, Werner [Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart (Germany)

    2007-12-15

    In this article, the proceedings of the International Conferences on Defects in Semiconductors (ICDS) have been analyzed by bibliometric methods. The papers of these conferences have been published as articles in regular journals or special proceedings journals and in books with diverse publishers. The conference name/title changed several times. Many of the proceedings did not appear in the so-called 'source journals' covered by the Thomson/ISI citation databases, in particular by the Science Citation Index (SCI). But the number of citations within these source journals can be determined using the Cited Reference Search mode under the Web of Science (WoS) and the SCI offered by the host STN International. The search functions of both systems were needed to select the papers published as different document types and to cover the full time span of the series. The most cited ICDS papers were identified, and the overall numbers of citations as well as the time-dependent impact of these papers, of single conferences, and of the complete series, was established. The complete of citing papers was analyzed with respect to the countries of the citing authors, the citing journals, and the ISI subject categories.

  12. Bibliometric analysis of scientific production about Linked Data

    Directory of Open Access Journals (Sweden)

    Leandro Dal Pizzol

    2015-09-01

    Full Text Available Introduction: Since Tim Berners-Lee coined the term Linked Data in 2006, many studies have emerged based on this initiative. Whether in the form of information access initiatives, whether in applications based on this data type, the interest in this new way to publish and consume information on the Web is increasingly in focus. Objective: In this paper, we present a bibliometric review with the aim of contributing to a better understanding and clarification of concepts and terms associated with the area of Linked Data. Methodology: We have used the Web of Science (WoS, Scopus, EBSCO and IEEE scientific databases, in order to find the existing studies about Linked Data until October 2012. Results: We have mapped 148 scientific papers that address the above issue, written by 409 authors from 160 institutions from 30 different countries. Through the analysis of the articles, it was found that researches about Linked Data are concentrated in a small authors group, suggesting future research opportunities. Conclusions: Synthesizing the information related to the scientific publications in a given area allows building a theoretical background that supports the development of future researches.

  13. Bibliometric Analysis of International Collaboration in Wind and Solar Energy

    Directory of Open Access Journals (Sweden)

    Ichiro Sakata

    2013-09-01

    Full Text Available Modern technology is increasingly complex and demands an ever-widening range of knowledge and skills. No single country will possess all the knowledge and skills required for addressing global issues such as climate change. Technology collaboration between leading countries is important to promptly and efficiently address the problem. Previous studies have shown that a high level of collaboration is correlated with high paper productivity. This paper first aims to use objective data and create maps that enable us to see both the distribution of worldwide research competency and the relationship of international collaboration in clean energy research. In the international research network of wind power and solar cell, 4,189 institutions located in 121 countries and 6,600 institutions located in 125 countries are included respectively. This paper discusses various factors that would have an impact on research capability and support strong international relationships. With respect to research capability, governmental policies, stability of governmental commitment, natural conditions and historical and institutional differences have a significant impact on it. For research collaborations, factors such as geographical proximity, international science and technology policy, and developmental stage of technology have been brought to attention. This study demonstrates that bibliometrics is a methodology that is capable of providing a knowledge base that is useful in the development of the international science and technology policy and technological management strategy.

  14. Anatomy of the ICDS series: A bibliometric analysis

    Science.gov (United States)

    Cardona, Manuel; Marxa, Werner

    2007-12-01

    In this article, the proceedings of the International Conferences on Defects in Semiconductors (ICDS) have been analyzed by bibliometric methods. The papers of these conferences have been published as articles in regular journals or special proceedings journals and in books with diverse publishers. The conference name/title changed several times. Many of the proceedings did not appear in the so-called “source journals” covered by the Thomson/ISI citation databases, in particular by the Science Citation Index (SCI). But the number of citations within these source journals can be determined using the Cited Reference Search mode under the Web of Science (WoS) and the SCI offered by the host STN International. The search functions of both systems were needed to select the papers published as different document types and to cover the full time span of the series. The most cited ICDS papers were identified, and the overall numbers of citations as well as the time-dependent impact of these papers, of single conferences, and of the complete series, was established. The complete of citing papers was analyzed with respect to the countries of the citing authors, the citing journals, and the ISI subject categories.

  15. A Bibliometric Analysis on “Fertility Rate” Research Trends

    Directory of Open Access Journals (Sweden)

    Shalini Nagaratnam

    2016-07-01

    Full Text Available The systematic literature search on the fertility rate was performed on articles from the Web of Science compiled by the Institute of Scientific Information (ISI to provide major publication characteristics. All articles related to Fertility from year 1980 to 2011 were analyzed with the bibliometric approach using non-parametrics techniques. Total Citation, Citation per year and Cited References were significantly different between the 80’s, 90’s and 2000’s, with more than a 100% increase in the number of publication. The association between number of authors and citation per year were significantly weak. Number of publication in a journal posed a poor negative association with the citation per year. Similarity between Authors Keyword and KeyWords Plus® do not promote the increase in citation per year. The author’s affiliation and country of publication would be an interesting exploration for future fertility research. The bibiliometric analyses on Fertility is rather new and vital, as the key finding will provide researchers guidance in the literature search and future publication.

  16. A bibliometric assessment of ASEAN collaboration in plant biotechnology

    KAUST Repository

    Payumo, Jane

    2015-04-03

    This study draws on publication and citation data related to plant biotechnology from a 10-year (2004–2013) period to assess the research performance, impact, and collaboration of member states of the Association of Southeast Asian Nations (ASEAN). Plant biotechnology is one of the main areas of cooperation between ASEAN member states and among the research areas promoted to achieve regional food security and sustainable development. In general, findings indicate increased scientific output, influence, and overall collaboration of ASEAN countries in plant biotechnology over time. Research performance and collaboration (domestic, regional, and international) of the region in plant biotechnology are linked to the status of the economic development of each member country. Thailand produced the most publications of the ASEAN member states while Singapore had the highest influence as indicated by its citation activity in plant biotechnology among the ASEAN countries. Domestic and international collaborations on plant biotechnology are numerous. Regional collaboration or partnership among ASEAN countries was, however, was found to be very limited, which is a concern for the region’s goal of economic integration and science and technology cooperation. More studies using bibliometric data analysis need to be conducted to understand plant biotechnology cooperation and knowledge flows between ASEAN countries. © 2015 Akadémiai Kiadó, Budapest, Hungary

  17. Examining semantics in interprofessional research: A bibliometric study.

    Science.gov (United States)

    Perrier, Laure; Adhihetty, Chamila; Soobiah, Charlene

    2016-05-01

    While experts in the field provide clarity between terms such as interprofessional and multidisciplinary, the published literature may not be offering this preciseness. A bibliometric analysis was conducted on 1,148 studies that examined terms such as interprofessional, multidisciplinary, and teamwork in order to examine patterns of indexing, overlap in how terms and phrases are used by authors, and consistencies in the definitions of terminology. A small number of relevant indexing terms are available in PubMed but were not regularly applied to the studies in this subject area. Our findings indicate that relying on indexing terms to locate this body of literature will not reliably identify all relevant studies when searching the literature. Definitions for these terms were typically not offered by authors, references were not regularly provided when definitions were included, and clear distinctions between the different terms were not reliably provided, thus creating further difficulties. Poor indexing, lack of consistent definitions being used in the research literature, and some authors using phrases and terms as synonyms make it challenging for educators, scholars, and researchers to search, find, and use this body of literature.

  18. Is Marketing Losing its Identity? A Bibliometric Review

    Directory of Open Access Journals (Sweden)

    Roberto Flores Falcão

    2017-06-01

    Full Text Available Marketing researchers have the responsibility to promote their field of study, developing models and tools, and suggesting best practices that favour marketing practitioners as well. In this sense, both current practices and consumer behavior are investigated. However, consumer behavior should not be seen as a whole on itself. Based on this issue, we investigated the publication in marketing in Brazil. Through a desk research using bibliometric analysis techniques over 520 journal issues and 28 conference proceedings were analyzed. In order to evaluate the evolution of the publication in marketing, we selected the two oldest management journals (RAUSP of FEA/USP and RAE of EAESP/FGV and the three main national events in the area (SEMEAD, EnANPAD and EMA. Papers published between 1947 and 1976 in RAUSP were analyzed in printed editions. The others were obtained through the website of the events and of the journals. In all, 2,715 marketing articles were identified. We noticed that there is a growing concentration of studies on consumer behavior. Other authors point to this situation, stressing that excessive focus on consumer behavior might reduce studies on strategy and decision making. Thus, the results suggest that marketing scholars rethink the scope of the field and their research activities, strengthening more applied studies to the reality of managers.

  19. Quality of Service: a study in databases bibliometric international

    Directory of Open Access Journals (Sweden)

    Deosir Flávio Lobo de Castro Junior

    2013-08-01

    Full Text Available The purpose of this article is to serve as a source of references on Quality of Service for future research. After surveying the international databases, EBSCO and ProQuest, the results on the state of the art in this issue are presented. The method used was the bibliometrics, and 132 items from a universe of 13,427 were investigated. The analyzed works cover the period from 1985 to 2011. Among the contributions, results and conclusions for future research are presented: i most cited authors ii most used methodology, dimensions and questionnaire; iii most referenced publications iv international journals with most publications on the subject, v distribution of the number of publications per year; vi authors networks vii educational institutions network; viii terms used in the search in international databases; ix the relationships studied in 132 articles; x criteria for choice of methodology in the research on quality of services; xi most often used paradigm, and xii 160 high impact references.

  20. Sustainability and strategic competitive advantage: an exploratory and bibliometric study

    Directory of Open Access Journals (Sweden)

    Pedrita Dantas Gabriele

    2012-08-01

    Full Text Available This study aims to conduct a bibliometric analysis to understand the state of the art of academic research that relates to sustainability strategy and competitive advantage. For this, the article seeks to identify what is produced, released and knowledge generated by the scientific community related to the subject, and analyzing key trends, through a quantitative analysis of the evolution of scientific literature on the themes, vehicles publishing, centers research, leading researchers and research networks. Initially we constructed a tree of keywords in order to quest the search engines and publications on the subject and later, do the processing and analysis software with the support of EndNote ®, RefViz ® and Excel ®.Through research, we found that there was a recent increase of publications on the subject of this article, especially since 2000, and the areas of science that most published on the subject are represented by the Triple Bottom Line (environmental, social and economic, pointing out that sustainability is currently having a bias much more proactive instead of reactive. Furthermore, it was also possible to identify countries that have the highest rate of development, like the HDI and GINI index, are the pioneers in publishing this issue.

  1. The praxis of acknowledgement: from bibliometrics to influmetrics

    Directory of Open Access Journals (Sweden)

    Cronin, B.

    1995-06-01

    Full Text Available The practice of acknowledgement in scholarly communication is widespread and growing. Acknowledgements define a variety of cognitive and social relationships between researchers within and across disciplines, and could thus be used to map networks of influence. We explore the relationship between authorship, acknowledgement and citation -the «Reward Triangle»- in the context of the academic audit process. We also consider the case for using acknowledgement data conjointly with established bibliometric indicators, such as citations, in performance assessment.

    El uso del agradecimiento está muy extendido en la comunicación académica y tiende a aumentar. El agradecimiento sirve para definir una serie de relaciones sociales y de conocimiento entre investigadores de una disciplina, así como vinculación con otras áreas del saber y, por eso, puede utilizarse para hacer un diseño de redes de influencia. En este artículo se explora la relación entre autores, agradecimientos y citas -el «triángulo del reconocimiento»- en el contexto de la evaluación académica. Los autores también consideran la posible utilización de datos procedentes del agradecimiento conjuntamente con otros indicadores bibliométricos, tales como las citas, en las evaluaciones.

  2. BIBLIOMETRIC ANALYSIS OF THE INKOM JOURNAL (ANALISIS BIBLIOMETRIK JURNAL INKOM

    Directory of Open Access Journals (Sweden)

    Engkos Koswara Natakusumah

    2016-03-01

    Full Text Available This paper proposed main problems of quantity and quality measurement of the research articles published in INKOM journal for 5 years period in informatics, computers and control system. Those three areas have become research missions of The Research Center for Informatics – Indonesia Institute of Sciences. The aim of this paper is to show how to solve research problems above using bibliometric method to analyze bibliography data available in the journal as well as to offer a summary of the research activity in the area including its most important aspects. Bibliographical data are taken from 76 articles published in the journal from May 2007 to November 2011. This paper also discusses how the method is used to measure article distribution, magazine classification category, article subject distribution, authorship patterns, and institutions distribution contributions. Results of the research show that the majority of articles are contributed by multi authors with degree of collaboration 0,553; the journal has already been widely known by the researchers outside LIPI, researchers from non-LIPI institution dominated more on the publication than from LIPI itself. The quantity of research articles increased in 2011 and used more references from scientific articles than the year before. Besides, the research quality also increased and used more cited articles from scientific journal literature than from books.

  3. Interlending & Document Supply: A bibliometric study from 2001 to 2010

    Directory of Open Access Journals (Sweden)

    Dillip K. Swain

    2012-12-01

    Full Text Available The study intends to evaluate journal of Interlending & Document Supply (ILDS from 2001 to 2010 using different bibliometric indicators and to find out various dimensions of publication trends of this journal. In accordance with the objectives of the study, the bibliographic citations appended at the end of each article were copied and stored in a separate MS-Word file. The details with regard to each published article such as type of papers, number of articles in each issue of the journal, number of references and their forms in each article, number of pages, number of authors, and the name of journals, etc. were recorded and analyzed. The study applied Lotka's law to assess authorship productivity pattern, and Bradford's law to ascertain the scattering of journals. In analyzing 315 scholarly articles published in ILDS for a period of 10 years ranging from 2001 to 2010, the study reveals that the highest numbers of articles are found to be single authored contributions, followed by two-authored contributions. The authorship productivity pattern partially complies with Lotka's Law. In regard to country productivity, UK leads the table, followed by USA, and France. Moreover, ILDS authors are found to have fairly cited recent literature in their papers which is evident from the half life period of documents. Furthermore, the study concludes that ILDS can enrich its standard if it can fine tune its editorial policy.

  4. [Bibliometric analysis of bacterial quantitative proteomics in English literatures].

    Science.gov (United States)

    Zhang, Xin; She, Danyang; Liu, Youning; Wang, Rui; Di, Xiuzhen; Liang, Beibei; Wang, Yue

    2014-07-01

    To analyze the worldwide advances on bacterial quantitative proteomics over the past fifteen years with bibliometric approach. Literature retrieval was conducted throughout the databases of Pubmed, Embase and Science citation index (SCI), using "bacterium" and "quantitative proteomics" as the key words. The deadline is July 2013. We sorted and analyzed these articles with Endnote X6 from the aspects of published year, the first author, name of journal, published institution, cited frequency and publication type. 932 English articles were included in our research after deleting the duplicates. The first article on bacterial quantitative proteomics was reported in 1999. The maximal publications were 163 related articles in 2012. Up till July 2013, authors from more than 23 countries and regions have published articles in this field. China ranks the fourth. The main publication type is original articles. The most frequently cited article is entitled with "Absolute quantification of proteins by LCMSE: a virtue of parallel MS acquisition" by Silva JC, Gorenstein MV, Li GZ, et al in Mol Cell Proteomics 2006. The most productive author is Smith RD from Biological Sciences Division, Pac. Northwest National Laboratory. The top journal publishing bacterial quantitative proteomics is Proteomics. More and more researchers pay attention to quantitative proteomics which will be widely used in bacteriology.

  5. Mapping the Field: A Bibliometric Analysis of Green Innovation

    Directory of Open Access Journals (Sweden)

    Gema Albort-Morant

    2017-06-01

    Full Text Available The topic of green innovation (GI has increasingly attained organizational relevance due to its contribution to the satisfaction of environmental needs while concurrently enabling companies to differentiate themselves from their competitors, and hence attain sustainable competitive advantages. In this context, we conducted a detailed analysis of 618 papers on green innovation from the Web of Science (WoS database for the 1971–2015 period. This paper develops a bibliometric analysis with the aim of assessing the key papers in the field and identifying the most substantive contributions to the literature. This study presents the following findings: (i the chronological development of the discipline; (ii the research trends and popular issues in this field; (iii the antecedent variables acting as key drivers of GI in these studies; and (iv the main outcomes of GI. Therefore, this paper provides the past, the present and the potential future of this specific topic and serves as an orientation and guide for researchers who are new to the topic of GI; it also enhances their knowledge concerning which journals, authors and articles they may consult while creating their theoretical framework or designing future research models.

  6. [Health education to ostomy patients: a bibliometrics study].

    Science.gov (United States)

    Reveles, Audrey Garcia; Takahashi, Regina Toshie

    2007-06-01

    This study has as its objective to identify the scientific studies dealing with the orientation to patients submitted to ostomy published between 1970 to 2004 and to classify them according to quantity, chronology of publication, authors' function, source, kind of study, topic, origin and key words by using the bibliometrics methodology. A total of 27 publications were collected in the DEDALUS databank, in the LILACS and MEDLINE databases and from a professor of the University of São Paulo's Nursing School (EEUSP, which is a national reference in ostomy in Brazil). Of these, 19 were written by Brazilians and 8 by non-Brazilians; most were written by nurses and enterostomal therapists. Dissertations, theses, orientation manuals, books and articles were found. The origin of the material was academia, laboratories and hospitals. The 1990s concentrated the largest number of studies in this thematic area. All of them have the purpose of elevating patients' self-esteem in order to make them feel that, even with an ostomy, they can have a normal life. Thus the study concludes that the nurse, as an educator for the ostomy patient, should be acquainted with those publications to improve the assistance he/she provides.

  7. Bibliometric analysis of anaesthesia journal editorial board members: correlation between journal impact factor and the median h-index of its board members.

    Science.gov (United States)

    Pagel, P S; Hudetz, J A

    2011-09-01

    h-index is useful for quantifying scholarly activity in medicine, but this statistic has not been extensively applied as a measure of productivity in anaesthesia. We conducted a bibliometric analysis of h-index in editorial board members and tested the hypothesis that editorial board members of anaesthesia journals with higher impact factors (IFs) have higher h-indices. Ten of 19 journals with 2009 IF>1 were randomly chosen from Journal Citation Reports(®). Board members were identified using each journal's website. Publications, citations, citations per publication, and h-index for each member were obtained using Scopus(®). Four hundred and twenty-three individuals filled 481 anaesthesia editorial board positions. The median h-index of all editorial board members was 14. Board members published 75 papers (median) with 1006 citations and 13 citations per publication. Members serving on journals with IF greater than median had significantly (Peditorial board members and its IF (h-index=3.01×IF+6.85; r( 2)=0.452; P=0.033) was observed for the 10 journals examined. Board members of subspeciality-specific journals had bibliometric indices that were less than those at general journals. The h-index was greater in individuals serving more than one journal. European editorial board members had higher h-index values than their American colleagues. The results suggest that editorial board members of anaesthesia journals with higher IFs have higher h-indices.

  8. By the Numbers: Bibliometrics and Altmetrics as Measures of Faculty Impact in the Field of Religion.

    Directory of Open Access Journals (Sweden)

    Beth Sheppard

    2015-08-01

    Full Text Available Citation analysis is a staple in the sciences for measuring the impact of faculty members' output, but heavy reliance on monographs as a vehicle of scholarly communication diminished the value of bibliometrics in theological disciplines.  The digital revolution, however, created a seismic shift for citation analysis and has given rise to altmetrics.  Overviews of altmetrics and bibliometrics are provided and a series of questions posed to encourage ongoing discussions about the value of these tools in theological contexts.

  9. Injury Statistics

    Science.gov (United States)

    ... Certification Import Safety International Recall Guidance Civil and Criminal Penalties Federal Court Orders & Decisions Research & Statistics Research & Statistics Technical Reports Injury Statistics NEISS Injury ...

  10. Experimental statistics

    CERN Document Server

    Natrella, Mary Gibbons

    2005-01-01

    Formulated to assist scientists and engineers engaged in army ordnance research and development programs, this well-known and highly regarded handbook is a ready reference for advanced undergraduate and graduate students as well as for professionals seeking engineering information and quantitative data for designing, developing, constructing, and testing equipment. Topics include characterizing and comparing the measured performance of a material, product, or process; general considerations in planning experiments; statistical techniques for analyzing extreme-value data; use of transformations

  11. Comparing Structural Perspectives on Medical Informatics: EMBASE vs. MEDLINE

    Science.gov (United States)

    Morris, Theodore Allan

    2003-01-01

    Previous bibliometric analyses of Medical Informatics’ internal structure used MEDLINE records as the unit of study. EMBASE, a product of Excerpta Medica, carries a wider international scope and offers complementary retrieval results to MEDLINE. Since much medical informatics critical thinking originated abroad and migrated to North America, this difference in coverage may also indicate a different perspective of “what constitutes medical informatics.” Using traditional bibliometric and multivariate data analysis techniques, the present work examines EMBASE indexing records for the same 1995–1999 time frame as earlier MEDLINE studies to identify and compare structural features of the field.. PMID:14728448

  12. Comparing structural perspectives on Medical Informatics: EMBASE vs. MEDLINE.

    Science.gov (United States)

    Morris, Theodore Allan

    2003-01-01

    Previous bibliometric analyses of Medical Informatics' internal structure used MEDLINE records as the unit of study. EMBASE, a product of Excerpta Medica, carries a wider international scope and offers complementary retrieval results to MEDLINE. Since much medical informatics critical thinking originated abroad and migrated to North America, this difference in coverage may also indicate a different perspective of "what constitutes medical informatics." Using traditional bibliometric and multivariate data analysis techniques, the present work examines EMBASE indexing records for the same 1995-1999 time frame as earlier MEDLINE studies to identify and compare structural features of the field.

  13. Cosmic Statistics of Statistics

    OpenAIRE

    Szapudi, I.; Colombi, S.; Bernardeau, F.

    1999-01-01

    The errors on statistics measured in finite galaxy catalogs are exhaustively investigated. The theory of errors on factorial moments by Szapudi & Colombi (1996) is applied to cumulants via a series expansion method. All results are subsequently extended to the weakly non-linear regime. Together with previous investigations this yields an analytic theory of the errors for moments and connected moments of counts in cells from highly nonlinear to weakly nonlinear scales. The final analytic formu...

  14. 图灵奖得主识别与预测研究--基于多文献计量指标和支持向量机%Study on the Identifiability and Predictability of Turing Award Winners Based on Multiple Bibliometric Indicators and Support Vector Machine

    Institute of Scientific and Technical Information of China (English)

    唐川; 唐卷; 房俊民; 刘春江

    2015-01-01

    国内外学者开展了若干借助文献计量指标来识别和预测重要科技奖项得主的研究与实践,但已有研究大多局限于对少数几项文献计量指标进行简单的计量统计,对问题的揭示不够全面和深入。利用支持向量机对图灵奖得主和非图灵奖得主的多项文献计量指标进行了分析,在两种不同情境下借助支持向量机对样本数据进行分类学习并进行识别与预测,发现利用文献计量指标建立的支持向量机模型对图灵奖得主具有很好的识别能力,但预测能力一般。%Researchers have explored the use of bibliometric indicators to identify and predict the winners of some prominent science a-wards. Previous work mainly employed some preliminary bibliometrics and statistics, lacking coverage of bibliometric indicators and depth of analysis. In order to investigate the identifiability and predictability of Turing Award winners, 20 bibliometric indicators about 33 Turing Award winners and 300 non-Turing Award winners were analyzed. A classification and prediction analysis was conducted with the biblio-metric indicators and data by support vector machine( SVM) in two different scenarios. The result indicated that a classification model could be developed based on bibilometric indicators to identify the Turing Award winners with a high precision. However, the prediction precision appeared medium.

  15. SIGffRid: A tool to search for sigma factor binding sites in bacterial genomes using comparative approach and biologically driven statistics

    Directory of Open Access Journals (Sweden)

    Kucherov Gregory

    2008-01-01

    Full Text Available Abstract Background Many programs have been developed to identify transcription factor binding sites. However, most of them are not able to infer two-word motifs with variable spacer lengths. This case is encountered for RNA polymerase Sigma (σ Factor Binding Sites (SFBSs usually composed of two boxes, called -35 and -10 in reference to the transcription initiation point. Our goal is to design an algorithm detecting SFBS by using combinational and statistical constraints deduced from biological observations. Results We describe a new approach to identify SFBSs by comparing two related bacterial genomes. The method, named SIGffRid (SIGma Factor binding sites Finder using R'MES to select Input Data, performs a simultaneous analysis of pairs of promoter regions of orthologous genes. SIGffRid uses a prior identification of over-represented patterns in whole genomes as selection criteria for potential -35 and -10 boxes. These patterns are then grouped using pairs of short seeds (of which one is possibly gapped, allowing a variable-length spacer between them. Next, the motifs are extended guided by statistical considerations, a feature that ensures a selection of motifs with statistically relevant properties. We applied our method to the pair of related bacterial genomes of Streptomyces coelicolor and Streptomyces avermitilis. Cross-check with the well-defined SFBSs of the SigR regulon in S. coelicolor is detailed, validating the algorithm. SFBSs for HrdB and BldN were also found; and the results suggested some new targets for these σ factors. In addition, consensus motifs for BldD and new SFBSs binding sites were defined, overlapping previously proposed consensuses. Relevant tests were carried out also on bacteria with moderate GC content (i.e. Escherichia coli/Salmonella typhimurium and Bacillus subtilis/Bacillus licheniformis pairs. Motifs of house-keeping σ factors were found as well as other SFBSs such as that of SigW in Bacillus strains

  16. Vulnerabilities—bibliometric analysis and literature review of evolving concepts

    Science.gov (United States)

    Giupponi, Carlo; Biscaro, Claudio

    2015-12-01

    In this work we analyse the evolution of the vulnerability concept in the research streams of climate change adaptation (CCA) and disaster risk reduction (DRR). We combine a traditional literature review with data mining procedures applied to bibliographic databases to reconstruct the history of the concept within various research topics, showing its evolution and convergences over time. To do that, we integrate different methods combining machine learning algorithms with network and cluster analyses to examine a set of 3757 articles, analysing their distinctive features and similarities on the basis of their contents as well as co-authorships. Bibliometric analyses enable the identification of different communities of articles, pinpointing key papers and authors, while literature review makes it possible to assess the concept of vulnerability evolved within and beyond research communities and scientific networks. Moreover, this work examines the role played by documents published by UN institutions (UNDRO, UNISDR, IPCC) in contributing to the evolution of vulnerability and related concepts. Results show that signs of convergence are evident between the two research streams, and that the IPCC reports have played a major role in proposing solutions for unifying definitions of vulnerability. We observe that the phases of preparation of the IPCC reports are very rich in methodological and terminological developments, while after publication, the literature shows evident signs of propagation of the proposed concepts. The DRR research stream developed before the research stream on CCA, but the latter flourished rapidly and became much larger in terms of number of publications. Nevertheless, in terms of contents, adaptation studies and the IPCC have shown increasing adoption of the concepts developed within the disaster research stream, in particular with regard to the interpretation of vulnerability as one of the dimensions of risk.

  17. Worldwide interest in the comet assay: a bibliometric study.

    Science.gov (United States)

    Neri, Monica; Milazzo, Daniele; Ugolini, Donatella; Milic, Mirta; Campolongo, Alessandra; Pasqualetti, Patrizio; Bonassi, Stefano

    2015-01-01

    The comet assay is a rapid, sensitive and relatively simple method for measuring DNA damage. A bibliometric study was performed to evaluate temporal and geographical trends, research quality and main areas of interest in scientific production in this field. A PubMed search strategy was developed and 7674 citations were retrieved in the period 1990-2013. Notably, the MeSH (Medical Subject Headings) term 'comet assay', officially introduced in 2000, is used by indexers only in two thirds of papers retrieved. Articles on the comet assay were published in 78 countries, spread over the 5 continents. The EU contributed the greatest output, producing >2900 articles with IF (42.0%) and totalling almost 10000 IF points, and was followed by USA. In the new millennium, research with this assay reached a plateau or slow decline in the most industrialised areas (USA, Germany, UK, Italy), while its use has boomed in emerging countries, with increases of 5- to 7-fold in the last 10 years in China, India and Brazil, for instance. This transition resulted in a slow decrease of scientific production quality, as the countries that increased their relative weight typically had lower mIFs. The most common MeSH terms used in papers using the comet assay referred to wide areas of interest, such as DNA damage and repair, cell survival and apoptosis, cancer and oxidative stress, occupational and environmental health. Keywords related to humans, rodents and cell culture were also frequently used. The top journal for the comet assay articles was found to be Mutation Research, followed by Mutagenesis. Most papers using the comet assay as a biomarker were published in genetic and toxicology journals, with a stress on environmental and occupational disciplines.

  18. Open-Access Mega-Journals: A Bibliometric Profile.

    Science.gov (United States)

    Wakeling, Simon; Willett, Peter; Creaser, Claire; Fry, Jenny; Pinfield, Stephen; Spezi, Valérie

    2016-01-01

    In this paper we present the first comprehensive bibliometric analysis of eleven open-access mega-journals (OAMJs). OAMJs are a relatively recent phenomenon, and have been characterised as having four key characteristics: large size; broad disciplinary scope; a Gold-OA business model; and a peer-review policy that seeks to determine only the scientific soundness of the research rather than evaluate the novelty or significance of the work. Our investigation focuses on four key modes of analysis: journal outputs (the number of articles published and changes in output over time); OAMJ author characteristics (nationalities and institutional affiliations); subject areas (the disciplinary scope of OAMJs, and variations in sub-disciplinary output); and citation profiles (the citation distributions of each OAMJ, and the impact of citing journals). We found that while the total output of the eleven mega-journals grew by 14.9% between 2014 and 2015, this growth is largely attributable to the increased output of Scientific Reports and Medicine. We also found substantial variation in the geographical distribution of authors. Several journals have a relatively high proportion of Chinese authors, and we suggest this may be linked to these journals' high Journal Impact Factors (JIFs). The mega-journals were also found to vary in subject scope, with several journals publishing disproportionately high numbers of articles in certain sub-disciplines. Our citation analsysis offers support for Björk & Catani's suggestion that OAMJs's citation distributions can be similar to those of traditional journals, while noting considerable variation in citation rates across the eleven titles. We conclude that while the OAMJ term is useful as a means of grouping journals which share a set of key characteristics, there is no such thing as a "typical" mega-journal, and we suggest several areas for additional research that might help us better understand the current and future role of OAMJs in

  19. Open-Access Mega-Journals: A Bibliometric Profile

    Science.gov (United States)

    Willett, Peter; Creaser, Claire; Fry, Jenny; Pinfield, Stephen; Spezi, Valérie

    2016-01-01

    In this paper we present the first comprehensive bibliometric analysis of eleven open-access mega-journals (OAMJs). OAMJs are a relatively recent phenomenon, and have been characterised as having four key characteristics: large size; broad disciplinary scope; a Gold-OA business model; and a peer-review policy that seeks to determine only the scientific soundness of the research rather than evaluate the novelty or significance of the work. Our investigation focuses on four key modes of analysis: journal outputs (the number of articles published and changes in output over time); OAMJ author characteristics (nationalities and institutional affiliations); subject areas (the disciplinary scope of OAMJs, and variations in sub-disciplinary output); and citation profiles (the citation distributions of each OAMJ, and the impact of citing journals). We found that while the total output of the eleven mega-journals grew by 14.9% between 2014 and 2015, this growth is largely attributable to the increased output of Scientific Reports and Medicine. We also found substantial variation in the geographical distribution of authors. Several journals have a relatively high proportion of Chinese authors, and we suggest this may be linked to these journals’ high Journal Impact Factors (JIFs). The mega-journals were also found to vary in subject scope, with several journals publishing disproportionately high numbers of articles in certain sub-disciplines. Our citation analsysis offers support for Björk & Catani’s suggestion that OAMJs’s citation distributions can be similar to those of traditional journals, while noting considerable variation in citation rates across the eleven titles. We conclude that while the OAMJ term is useful as a means of grouping journals which share a set of key characteristics, there is no such thing as a “typical” mega-journal, and we suggest several areas for additional research that might help us better understand the current and future role of

  20. The top 100 papers in dry eye - A bibliometric analysis.

    Science.gov (United States)

    Schargus, Marc; Kromer, Robert; Druchkiv, Vasily; Frings, Andreas

    2017-09-15

    Citation analysis represents one of the best currently available methods for quantifying the impact of articles. Bibliometric studies list the ''best sellers'' in a single field of interest. The purpose of the present study was to identify and analyze the most frequently cited papers in dry eye research that may be of high interest for researchers and clinicians. We reviewed the database of the Institute for Scientific Information to identify articles published from 1900 to September 2016. All dry eye articles published in 59 ophthalmology journals were identified. The top 100 articles were selected for further analysis of authorship, source journal, number of citations, citation rate, geographic origin, article type, and level of evidence. The 100 most-cited articles were published between 1983 and 2011, with most of them in the 2000s. The number of citations per article ranged from 96 to 610, and was greatest for articles published in the 2000s. Each of these articles was published in one of 15 journals. Most articles represented Level-III evidence, followed by Levels II and I. The present study focusing on dry eye research revealed that 55% of the most-cited articles came from the U.S. and 18% from Japan. Diagnostics and therapy were the areas of focus of most of the clinical articles; 13% of the most cited papers were review articles. This analysis provides researchers and clinicians with a detailed overview on the most cited dry eye papers over the past decades. Copyright © 2017. Published by Elsevier Inc.

  1. Bibliometric analysis of literature on antifungal triazole resistance: 1980 – 2015

    Science.gov (United States)

    Sweileh, Waleed M.; Sawalha, Ansam F.; Al-Jabi, Samah; Zyoud, Sa’ed H.

    2017-01-01

    Background Triazole antifungal agents play an important role in the treatment of a wide range of fungal infections. Little is known about antifungal triazole drug resistance when compared to antibiotic resistance. Therefore, this study was carried out to give a bibliometric overview of literature on triazole antifungal drug resistance. Methods Keywords related to triazole drug class and resistance were used in a search query in the Scopus search engine. The time span was set from 1980 to 2015. Data pertaining to growth of publications, the most active countries and institutions, the most cited articles, and mapping of molecular mechanisms of resistance were analyzed. Results A total of 1648 journal articles were retrieved with an average of 20.46 citations per article. Annual growth of triazole resistance showed an increasing pattern during the study period. The United States of America (n=446; 27.06%) ranked first in productivity followed by the United Kingdom (UK) (n=176; 10.68%), and China (n=133; 8.07%). Radboud University Nijmegen Medical Centre (n=69, 4.19%) in the Netherlands ranked first in productivity, while the journal Antimicrobial Agents and Chemotherapy ranked first (n=255; 15.47%) in publishing articles on triazole resistance. Mapping mechanisms of resistance showed that efflux pump and mutations in target enzyme are major mechanisms described in resistance to triazoles. Conclusion There was a growth of publications on triazole resistance in the past two decades with the bulk of publications on triazole resistance in Candida species. The data presented here will serve as baseline information for future comparative purposes. PMID:28331838

  2. Characteristics of scientific production in Special Education in Virtual Health Library (VHL: a bibliometric study

    Directory of Open Access Journals (Sweden)

    Luciana Pizzani

    2010-12-01

    Full Text Available Objective: To characterize, through bibliometric approach, the scientific literature in this Special Education in the databases of the Virtual Health Library (VHL. The VHL is coordinated by BIREME - Specialized Center of the Pan American Health Organization whose objective is to promote the dissemination and use of scientific information in health. Method: The research methodology was performed by observing the following steps: a literature review on education special and bibliometrics, data collection from the site of BIREME about the presence of special education in the databases, organization, processing and bibliometric analysis of data collected using the software MS Excel and Vantage Point. Results: indicators produced allow signal that the predominant language of scientific production was the Portuguese and the majority of records were written individually, the themes addressed were psychology and developmental psychology. Conclusion: These bibliometric indicators characterizing the state of the art of scientific literature in Special Education at the various bases Data Bireme and also showed a field of interconnections between Health Sciences and Special Education.

  3. Collaboration Patterns as a Function of Article Genre among Mixed Researchers: A Mixed Methods Bibliometric Study

    Science.gov (United States)

    Jordan, John; Wachsmann, Melanie; Hoisington, Susan; Gonzalez, Vanessa; Valle, Rachel; Lambert, Jarod; Aleisa, Majed; Wilcox, Rachael; Benge, Cindy L.; Onwuegbuzie, Anthony J.

    2017-01-01

    Surprisingly, scant information exists regarding the collaboration patterns of mixed methods researchers. Thus, the purpose of this mixed methods bibliometric study was to examine (a) the distribution of the number of co-authors in articles published in the flagship mixed methods research journal (i.e., "Journal of Mixed Methods…

  4. Quo Vadis Clozapine? A Bibliometric Study of 45 Years of Research in International Context.

    Science.gov (United States)

    López-Muñoz, Francisco; Sanz-Fuentenebro, Javier; Rubio, Gabriel; García-García, Pilar; Álamo, Cecilio

    2015-09-23

    We have carried out a bibliometric study about the international scientific publications on clozapine. We have used the EMBASE and MEDLINE databases, and we applied bibliometric indicators of production, as Price's Law on the increase of scientific literature. We also calculated the participation index (PI) of the different countries. The bibliometric data have also been correlated with some social and health data from the 12 most productive countries in biomedicine and health sciences. In addition, 5607 original documents dealing with clozapine, published between 1970 and 2013, were downloaded. Our results state non-fulfilment of Price's Law, with scientific production on clozapine showing linear growth (r=0.8691, vs. r=0.8478 after exponential adjustment). Seven of the 12 journals with the highest numbers of publications on clozapine have an Impact Factor>2. Among the countries generating clozapine research, the most prominent is the USA (PI=24.32), followed by the UK (PI=6.27) and Germany (PI=5.40). The differences among countries on clozapine research are significantly related to economic variables linked to research. The scientific interest in clozapine remains remarkable, although after the application of bibliometric indicators of production, a saturation point is evident in the growth of scientific literature on this topic.

  5. Bibliometric Rankings of Journals Based on the Thomson Reuters Citations Database

    NARCIS (Netherlands)

    C-L. Chang (Chia-Lin); M.J. McAleer (Michael)

    2015-01-01

    markdownabstract__Abstract__ Virtually all rankings of journals are based on citations, including self citations by journals and individual academics. The gold standard for bibliometric rankings based on citations data is the widely-used Thomson Reuters Web of Science (2014) citations database, whi

  6. Bibliometric Rankings of Journals based on the Thomson Reuters Citations Database

    NARCIS (Netherlands)

    C-L. Chang (Chia-Lin); M.J. McAleer (Michael)

    2015-01-01

    markdownabstract__Abstract__ Virtually all rankings of journals are based on citations, including self citations by journals and individual academics. The gold standard for bibliometric rankings based on citations data is the widely-used Thomson Reuters Web of Science (2014) citations database, whi

  7. Citation Mining: Integrating Text Mining and Bibliometrics for Research User Profiling.

    Science.gov (United States)

    Kostoff, Ronald N.; del Rio, J. Antonio; Humenik, James A.; Garcia, Esther Ofilia; Ramirez, Ana Maria

    2001-01-01

    Discusses the importance of identifying the users and impact of research, and describes an approach for identifying the pathways through which research can impact other research, technology development, and applications. Describes a study that used citation mining, an integration of citation bibliometrics and text mining, on articles from the…

  8. Attitudes towards Disability in Education through the SSCI (2000-2011): A Topical and Bibliometric Analysis

    Science.gov (United States)

    Garcia-Fernandez, Jose Manuel; Ingles, Candido J.; Juan, Maria Vicent; Gonzalvez-Macia, Carolina; Manas-Viejo, Carmen

    2013-01-01

    Introduction: The purpose of this study is to describe and characterize the international scientific output relating to "attitudes towards disability in education", using a battery of bibliometric indicators that make it possible to analyze and monitor international scientific activity. Method: This "ex post facto"…

  9. High-Impact Social Work Scholars: A Bibliometric Examination of SSWR and AASWSW Fellows

    Science.gov (United States)

    Hodge, David R.; Kremer, Kristen P.; Vaughn, Michael G.

    2016-01-01

    Objective: The purpose of this study was to identify and describe the bibliometric contributions of high-impact social work faculty. Methods: Toward this end, we used a sample comprising fellows (N = 143) affiliated with the Society for Social Work and Research (SSWR) and the American Academy of Social Work and Social Welfare (AASWSW). To quantify…

  10. Quo Vadis Clozapine? A Bibliometric Study of 45 Years of Research in International Context

    Directory of Open Access Journals (Sweden)

    Francisco López-Muñoz

    2015-09-01

    Full Text Available We have carried out a bibliometric study about the international scientific publications on clozapine. We have used the EMBASE and MEDLINE databases, and we applied bibliometric indicators of production, as Price’s Law on the increase of scientific literature. We also calculated the participation index (PI of the different countries. The bibliometric data have also been correlated with some social and health data from the 12 most productive countries in biomedicine and health sciences. In addition, 5607 original documents dealing with clozapine, published between 1970 and 2013, were downloaded. Our results state non-fulfilment of Price’s Law, with scientific production on clozapine showing linear growth (r = 0.8691, vs. r = 0.8478 after exponential adjustment. Seven of the 12 journals with the highest numbers of publications on clozapine have an Impact Factor > 2. Among the countries generating clozapine research, the most prominent is the USA (PI = 24.32, followed by the UK (PI = 6.27 and Germany (PI = 5.40. The differences among countries on clozapine research are significantly related to economic variables linked to research. The scientific interest in clozapine remains remarkable, although after the application of bibliometric indicators of production, a saturation point is evident in the growth of scientific literature on this topic.

  11. Bibliometric analysis of scientific literature on intestinal parasites in Argentina during the period 1985-2014.

    Science.gov (United States)

    Basualdo, Juan A; Grenóvero, María S; Bertucci, Evangelina; Molina, Nora B

    2016-01-01

    The study of scientific production is a good indicator of the progress in research and knowledge generation. Bibliometrics is a scientific discipline that uses a set of indicators to quantitatively express the bibliographic characteristics of scientific publications. The scientific literature on the epidemiology of intestinal parasites in Argentina is scattered in numerous sources, hindering access and visibility to the scientific community. Our purpose was to perform a quantitative, bibliometric study of the scientific literature on intestinal parasites in humans in Argentina published in the period 1985-2014. This bibliometric analysis showed an increase in the number of articles on intestinal parasites in humans in Argentina published over the past 30 years. Those articles showed a collaboration index similar to that of the literature, with a high index of institutionality for national institutions and a very low one for international collaboration. The original articles were published in scientific journals in the American Continent, Europe and Asia. The use of bibliometric indicators can provide a solid tool for the diagnosis and survey of the research on epidemiology of intestinal parasites and contributes to the dissemination and visibility of information on the scientific production developed in Argentina. Copyright © 2016 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  12. Research Trends in the Study of ICT Based Learning Communities: A Bibliometric Analysis

    Science.gov (United States)

    Hernández, Jonathan Bermúdez; Chalela, Salim; Arias, Jackeline Valencia; Arias, Alejandro Valencia

    2017-01-01

    The current opportunities to develop and acquire knowledge in the network, Information and Communications Technology (ICT) play a major role in the learning process. This research offers a bibliometric analysis in order to examine the state of the research activity carried out in relation to the learning communities based on ICT. The indicators…

  13. Mapping patient safety: A large-scale literature review using bibliometric visualisation techniques

    NARCIS (Netherlands)

    Rodrigues, S.P.; Van Eck, N.J.; Waltman, L.; Jansen, F.W.

    2014-01-01

    Background The amount of scientific literature available is often overwhelming, making it difficult for researchers to have a good overview of the literature and to see relations between different developments. Visualisation techniques based on bibliometric data are helpful in obtaining an overview

  14. A bibliometric analysis of the clinical development of drugs in Norway for the year 2000

    NARCIS (Netherlands)

    Hole, Ola P.; Winther, Finn O.; Cederkvist, Henrik R.; Nitter-Hauge, Sigurd

    2013-01-01

    Purpose: Bibliometric analysis of publications was used to investigate the research output relating to the development of drugs in Norway and to evaluate the impact of Norwegian involvement in this research. Material and methods: One hundred and nine articles published between 2002 and 2008 were ana

  15. Implications from innovativeness typology on innovation performance measurement: A bibliometric analysis

    NARCIS (Netherlands)

    Moeller, K.; Steinman, J.C.; Calabretta, G.

    2015-01-01

    This research contributes to the ongoing since decades existing discussion on research in innovativeness, a term which in the past has been closely related to innovation measurement. Using bibliometric techniques like citation and co-citation analysis combined with factor analysis, cluster analysis

  16. Unveiling scientific communities about sustainability and innovation. A bibliometric journey around sustainable terms

    DEFF Research Database (Denmark)

    Franceschini, Simone; Faria, Lourenco; Jurowetzki, Roman

    2016-01-01

    Literature about the relationship between innovation and sustainability has skyrocketed in the last two decades and new terms have appeared. However, only very few bibliometric analyses have reviewed some of these terms (eco-innovation, environmental innovation, green innovation, and sustainable ...

  17. Links in science : linking network and bibliometric analyses in the study of research performance

    NARCIS (Netherlands)

    Calero Medina, Clara Maria

    2012-01-01

    The research described in this thesis aims to establish the use of detailed collaboration and citation analysis combined with other forms of bibliometric analysis as a tool enabling a better understanding of the organization of scientific communities and the way knowledge is spread inside scientific

  18. Professional and Citizen Bibliometrics : Complementarities and ambivalences in the development and use of indicators

    NARCIS (Netherlands)

    Leydesdorff, L.; Wouters, P.; Bornmann, L.

    2016-01-01

    Bibliometric indicators such as journal impact factors, h-indices, and total citation counts are algorithmic artifacts that can be used in research evaluation and management. These artifacts have no meaning by themselves, but receive their meaning from attributions in institutional practices. We

  19. Bibliometrics and social work: a two-edged sword can still be a blunt instrument.

    Science.gov (United States)

    Ligon, Jan; Thyer, Bruce A

    2005-01-01

    In order to improve the productivity and impact of social work scholarship, the profession must look beyond bibliometrics to other issues that must be considered. These include the lag time between acceptance and publication of articles, the quality of peer review experienced by social work authors, and the overabundance of journals being published in social work.

  20. Attracted to open access journals: A bibliometric author analysis in the field of biology

    DEFF Research Database (Denmark)

    Faber Frandsen, Tove

    2009-01-01

    countries and is thus a supplement to the existing author surveys and interviews. Design/methodology/approach - Bibliometric analyses of both publishing behaviour and citing behaviour in relation to OA publishing provides evidence of the impact of open access on developing countries. Findings - The results...

  1. Using Citation Indexes, Citation Searching, and Bibliometrics to Improve Chemistry Scholarship, Research, and Administration

    Science.gov (United States)

    Buntrock, Robert E.

    2016-01-01

    Citation searching and bibliometrics are terms foreign to many chemists and educators, yet well-known and used by librarians and information specialists. This article aims to help chemistry students, educators, and other readers of this "Journal" to better appreciate and use these powerful and profound methods. Although these subjects…

  2. A Bibliometric Snapshot of "The Journal of Higher Education" and Its Impact on the Field

    Science.gov (United States)

    Earp, Vanessa J.

    2010-01-01

    In recent decades the field of higher education has grown exponentially; however, little research examines a particular journal and its impact on the field. The purpose of this study was to conduct a brief bibliometric analysis and discuss the impact of "The Journal of Higher Education" (1998-2002), a premier journal in the discipline. (Contains 6…

  3. Research on Social Work Practice: A Bibliometric Evaluation of the First Decade

    Science.gov (United States)

    Holden, Gary; Rosenberg, Gary; Barker, Kathleen; Lioi, Justin

    2010-01-01

    Objective: This article describes a bibliometric analysis of articles appearing in the journal "Research on Social Work Practice" (RSWP). Method: Descriptive and predictive analyses for the sample of 322 articles are presented. Results: The typical RSWP article was 15 pages long, had two authors and 28 references, and was cited for the first time…

  4. Professional and Citizen Bibliometrics : Complementarities and ambivalences in the development and use of indicators

    NARCIS (Netherlands)

    Leydesdorff, L.; Wouters, P.; Bornmann, L.

    2016-01-01

    Bibliometric indicators such as journal impact factors, h-indices, and total citation counts are algorithmic artifacts that can be used in research evaluation and management. These artifacts have no meaning by themselves, but receive their meaning from attributions in institutional practices. We dis

  5. World Cities of Scientific Knowledge: Systems, Networks and Potential Dynamics. An Analysis Based on Bibliometric Indicators

    DEFF Research Database (Denmark)

    Matthiessen, Christian Wichmann; Schwarz, Annette Winkel; Find, Søren

    2010-01-01

    changed over the past decade in favour of south-east Asian and south European cities and in disfavour of the traditional centres of North America and north-western Europe. The analysis is based on bibliometric data on the world’s 100 largest cities measured in terms of research output. The level...

  6. Inciting the Metric Oriented Humanist: Teaching Bibliometrics in a Faculty of Humanities

    Science.gov (United States)

    Zuccala, Alesia

    2016-01-01

    In the past few decades the core of bibliometrics has predominantly been "scientometric" in nature, due to the first commercial citation index having been created for scientific journals and articles. The production of citation indexes for books implies that proper education related to their use is now becoming critical. A new breed of…

  7. The Matthew effect in environmental science publication: A bibliometric analysis of chemical substances in journal articles

    DEFF Research Database (Denmark)

    Grandjean, Philippe; Eriksen, Mette Lindholm; Ellegaard, Ole

    2011-01-01

    Background While environmental research addresses scientific questions of possible societal relevance, it is unclear to what degree research focuses on environmental chemicals in need of documentation for risk assessment purposes. Methods In a bibliometric analysis, we used SciFinder to extract...

  8. Research Productivity and Performance of Journals in the Creativity Sciences: A Bibliometric Analysis

    Science.gov (United States)

    Long, Haiying; Plucker, Jonathan A.; Yu, Qi; Ding, Ying; Kaufman, James C.

    2014-01-01

    A bibliometric approach was employed to analyze the research productivity and performance of creativity studies between 1965 and 2012. A dataset was constructed using all publications and citations retrieved from four key journals that publish creativity research: "Journal of Creative Behavior" ("JCB"), "Gifted Child…

  9. Some Limitations of the "H" Index: A Commentary on Ruscio and Colleagues' Analysis of Bibliometric Indices

    Science.gov (United States)

    Waltman, Ludo; Costas, Rodrigo; van Eck, Nees Jan

    2012-01-01

    The literature on bibliometric indices for assessing scholarly impact, in particular the "h" index (Hirsch, 2005) and its many variants, is extensive, but nevertheless Ruscio and colleagues (this issue) succeed in making a valuable contribution. They have made the effort of collecting publication and citation data for no less than 1,750…

  10. The Use of Bibliometrics to Measure Research Performance in Education Sciences

    Science.gov (United States)

    Diem, Andrea; Wolter, Stefan C.

    2013-01-01

    This paper investigates the fitness-for-purpose and soundness of bibliometric parameters for measuring and elucidating the research performance of individual researchers in the field of education sciences in Switzerland. In order to take into account the specificities of publication practices of researchers in education sciences, the analyses are…

  11. Attitudes towards Disability in Education through the SSCI (2000-2011): A Topical and Bibliometric Analysis

    Science.gov (United States)

    Garcia-Fernandez, Jose Manuel; Ingles, Candido J.; Juan, Maria Vicent; Gonzalvez-Macia, Carolina; Manas-Viejo, Carmen

    2013-01-01

    Introduction: The purpose of this study is to describe and characterize the international scientific output relating to "attitudes towards disability in education", using a battery of bibliometric indicators that make it possible to analyze and monitor international scientific activity. Method: This "ex post facto"…

  12. Citation Mining: Integrating Text Mining and Bibliometrics for Research User Profiling.

    Science.gov (United States)

    Kostoff, Ronald N.; del Rio, J. Antonio; Humenik, James A.; Garcia, Esther Ofilia; Ramirez, Ana Maria

    2001-01-01

    Discusses the importance of identifying the users and impact of research, and describes an approach for identifying the pathways through which research can impact other research, technology development, and applications. Describes a study that used citation mining, an integration of citation bibliometrics and text mining, on articles from the…

  13. Attracted to open access journals: A bibliometric author analysis in the field of biology

    DEFF Research Database (Denmark)

    Faber Frandsen, Tove

    2009-01-01

    countries and is thus a supplement to the existing author surveys and interviews. Design/methodology/approach - Bibliometric analyses of both publishing behaviour and citing behaviour in relation to OA publishing provides evidence of the impact of open access on developing countries. Findings - The results...

  14. 岩石统计损伤本构模型及对比分析%Statistical damage constitutive models of rock and their comparative analysis

    Institute of Scientific and Technical Information of China (English)

    游强; 游猛

    2011-01-01

    损伤力学是研究岩石破坏过程中本构关系的一种有效手段.假定岩石微元强度分布服从Weibull分布和幂函数分布的概率分布理论,将Drucker-Prager准则作为岩石统计分布变量,同时引入一个能够反映岩石微元破坏部分承载力的修正系数,建立基于不同概率分布的岩石损伤统计本构模型,并用极值法求解模型参数.最后通过理论结果和试验结果的对比分析发现:Weibull分布比较适合于作为岩石微元强度的概率分布函数,而幂函数分布不适合作为岩石微元强度的概率分布函数.%Damage mechanics is an effective means of studying the constitutive relationship in the process of rock failure. By presuming that the distribution of rock elementary strength submits to the probability distribution theory of Weibull distribution and power function distribution, respectivelly, and taking the Drucker-Prager criterion as the statistical distribution variable of the rock, and meantime introducing a correction coefficient that can reflect the bearing capacity of the partially destructed elementary rock, the statistical constitutive models of rock damage were established according to the foregoing two different probability distributions and the model parameters were also found by means of extremum approach. Finally, it was found by comparing and analyzing the theoretical and experimental results that the Weibull distribution was comparatively suitable for the probability distribution function and the power function distribution, however, was not.

  15. Integrated impact indicators compared with impact factors : An alternative research design with policy implications

    NARCIS (Netherlands)

    Leydesdorff, L.; Bornmann, L.

    2011-01-01

    In bibliometrics, the association of “impact” with central-tendency statistics is mistaken. Impacts add up, and citation curves therefore should be integrated instead of averaged. For example, the journals MIS Quarterly and Journal of the American Society for Information Science and Technology diffe

  16. Content and bibliometric analysis of articles published in the Journal of Orthopaedic & Sports Physical Therapy.

    Science.gov (United States)

    Coronado, Rogelio A; Wurtzel, Wendy A; Simon, Corey B; Riddle, Daniel L; George, Steven Z

    2011-12-01

    Descriptive bibliometric analysis. Content and bibliometric studies are useful for describing the publication patterns of a given profession, such as physical therapy, within the medical and allied health fields. However, few studies have conducted these analyses on specialty physical therapy journals. To conduct a content and bibliometric assessment of publications within the Journal of Orthopaedic & Sports Physical Therapy (JOSPT) and report publication and citation trends over multiple years. All available JOSPT manuscripts published from 1980 through 2009 were reviewed. Only research reports, topical reviews, and case reports were included in the current analysis. Articles were coded by 2 independent reviewers based on type, participant characteristics, research design, purpose, clinical condition, and intervention. We obtained additional citation information (eg, authors and institutions) from a subset of articles published from 1992 through 2009 using bibliometric software. Of the 2233 available JOSPT publications, 1732 (77.6%) met criteria for inclusion. Of these, 1172 (67.7%) were research reports, 351 (20.3%) topical reviews, and 209 (12.1%) case reports. Over the last 30 years there has been a significant increase in the number of articles published and the percentage of research reports, systematic reviews, articles focused on prognosis, and articles including symptomatic participants. Percentage decreases were observed for topical or nonsystematic reviews and articles focused on anatomy/physiology. Top institutions, authors, and cited papers from 1992 through 2009 were identified in the bibliometric analyses. JOSPT has shown publication trends for increased percentage of experimental and clinically relevant research. However, there may be a need for increased publication of randomized controlled trials and studies focused on diagnosis, prognosis, and treatment, if goals of evidence-based practice are to be met.

  17. Bibliometric Analysis of New Century Library Published in 2010%2010年《新世纪图书馆》载文和作者及引文统计分析

    Institute of Scientific and Technical Information of China (English)

    田锦萍

    2012-01-01

    Using bibliometric methods,this paper makes a statistical analysis to texts,authors,and citations of New Century Library on 2010,from which sum up some rules for the library and information science research and development of reference.%运用文献计量学的方法,对2010年《新世纪图书馆》的载文、作者及引文情况进行统计分析,从中总结规律,为图书情报学的研究与发展提供参考依据。

  18. Balkanized research in ecological engineering revealed by a bibliometric analysis of earthworms and ecosystem services.

    Science.gov (United States)

    Blouin, Manuel; Sery, Nicolas; Cluzeau, Daniel; Brun, Jean-Jacques; Bédécarrats, Alain

    2013-08-01

    Energy crisis, climate changes, and biodiversity losses have reinforced the drive for more ecologically-based approaches for environmental management. Such approaches are characterized by the use of organisms rather than energy-consuming technologies. Although earthworms are believed to be potentially useful organisms for managing ecosystem services, there is actually no quantification of such a trend in literature. This bibliometric analysis aimed to measure the evolution of the association of "earthworms" and other terms such as ecosystem services (primary production, nutrient cycling, carbon sequestration, soil structure, and pollution remediation), "ecological engineering" or "biodiversity," to assess their convergence or divergence through time. In this aim, we calculated the similarity index, an indicator of the paradigmatic proximity defined in applied epistemology, for each year between 1900 and 2009. We documented the scientific fields and the geographical origins of the studies, as well as the land uses, and compare these characteristics with a 25 years old review on earthworm management. The association of earthworm related keywords with ecosystem services related keywords was increasing with time, reflecting the growing interest in earthworm use in biodiversity and ecosystem services management. Conversely, no significant increase in the association between earthworms and disciplines such as ecological engineering or restoration ecology was observed. This demonstrated that general ecologically-based approaches have yet to emerge and that there is little exchange of knowledge, methods or concepts among balkanized application realms. Nevertheless, there is a strong need for crossing the frontiers between fields of application and for developing an umbrella discipline to provide a framework for the use of organisms to manage ecosystem services.

  19. State of the interface between conservation and physiology: a bibliometric analysis.

    Science.gov (United States)

    Lennox, Robert; Cooke, Steven J

    2014-01-01

    Contemporary conservation science benefits from the perspectives of a variety of different disciplines, including a recent synergy with physiology, an interface known as 'conservation physiology'. To evaluate the degree of interaction between conservation and animal/plant physiology, we conducted three bibliometric analyses. We first pursued the use of the term 'conservation physiology' since its first definition in 2006 to determine how frequently it has been used and in which publications. Secondly, we evaluated the occurrence of conservation terms in animal and plant physiology journals, physiological terms in conservation journals, and a combination of terms in ecology journals. Thirdly, we explored trends in a subset of conservation physiology articles published between 2006 and 2012. We identified a surge in the use of the term 'conservation physiology' in 2012, after only a slow increase in usage between 2006 and 2011. Conservation journals tend to have been significantly more active in publishing conservation physiology than animal physiology, plant physiology or ecology journals. However, we found evidence that ecology and animal physiology journals began to incorporate more conservation physiology after 2006, while conservation- and plant physiology-themed journals did not. Among 299 conservation physiology articles that we identified, vertebrate taxa have been over-represented in conservation physiology compared with their relative taxonomic abundance, invertebrate taxa have been under-represented, and plants have been represented in proportion to their relative taxonomic abundance; however, those findings are reasonably consistent with publication trends in conservation biology. Diffuse distribution of conservation physiology papers throughout the literature may have been a barrier to the growth of the subdiscipline when the interface was emerging. The introduction of the focused journal Conservation Physiology in 2013 may address that deficiency

  20. Balkanized Research in Ecological Engineering Revealed by a Bibliometric Analysis of Earthworms and Ecosystem Services

    Science.gov (United States)

    Blouin, Manuel; Sery, Nicolas; Cluzeau, Daniel; Brun, Jean-Jacques; Bédécarrats, Alain

    2013-08-01

    Energy crisis, climate changes, and biodiversity losses have reinforced the drive for more ecologically-based approaches for environmental management. Such approaches are characterized by the use of organisms rather than energy-consuming technologies. Although earthworms are believed to be potentially useful organisms for managing ecosystem services, there is actually no quantification of such a trend in literature. This bibliometric analysis aimed to measure the evolution of the association of "earthworms" and other terms such as ecosystem services (primary production, nutrient cycling, carbon sequestration, soil structure, and pollution remediation), "ecological engineering" or "biodiversity," to assess their convergence or divergence through time. In this aim, we calculated the similarity index, an indicator of the paradigmatic proximity defined in applied epistemology, for each year between 1900 and 2009. We documented the scientific fields and the geographical origins of the studies, as well as the land uses, and compare these characteristics with a 25 years old review on earthworm management. The association of earthworm related keywords with ecosystem services related keywords was increasing with time, reflecting the growing interest in earthworm use in biodiversity and ecosystem services management. Conversely, no significant increase in the association between earthworms and disciplines such as ecological engineering or restoration ecology was observed. This demonstrated that general ecologically-based approaches have yet to emerge and that there is little exchange of knowledge, methods or concepts among balkanized application realms. Nevertheless, there is a strong need for crossing the frontiers between fields of application and for developing an umbrella discipline to provide a framework for the use of organisms to manage ecosystem services.

  1. A Statistical Analysis on Papers and Authors in Wuhan University Journal of Natural Sciences in 2003

    Institute of Scientific and Technical Information of China (English)

    HU Min

    2004-01-01

    The author of this article counts and analyzes the papers and authors printed in 2003 Wuhan University Journal of Natural Sciences by means of bibliometric statistical methods, of which the characteristics of papers and authors are expounded.The result shows that the ratio of reprinting of this journal has been increased and the areas where the authors come from and their organization scattered in the whole world are widened as well, which implies a better-known fame of the journal.

  2. 基于文献计量的中国图书馆法研究综述%Summary on Law of Chinese Libraries Based on Bibliometrics

    Institute of Scientific and Technical Information of China (English)

    刘峰

    2012-01-01

    By the use of bibliometrics method,this article makes a statistical analysis and back-tracking study of the papers about law of Chinese libraries which were published from 1995 to 2011.The basic principles of the library law,content and theoretical results are discussed.At last,it discusses the summary of law of Chinese libraries research results.%利用文献计量法对1995-2011年间以中国图书馆法为主题的论文做了统计分析和回溯研究,揭示了中国图书馆法的基本原则、主要内容、理论成果,并对其研究成果做了总结。

  3. Cross-cultural and comparative epidemiology of insomnia: the Diagnostic and statistical manual (DSM), International classification of diseases (ICD) and International classification of sleep disorders (ICSD).

    Science.gov (United States)

    Chung, Ka-Fai; Yeung, Wing-Fai; Ho, Fiona Yan-Yee; Yung, Kam-Ping; Yu, Yee-Man; Kwok, Chi-Wa

    2015-04-01

    To compare the prevalence of insomnia according to symptoms, quantitative criteria, and Diagnostic and Statistical Manual of Mental Disorders, 4th and 5th Edition (DSM-IV and DSM-5), International Classification of Diseases, 10th Revision (ICD-10), and International Classification of Sleep Disorders, 2nd Edition (ICSD-2), and to compare the prevalence of insomnia disorder between Hong Kong and the United States by adopting a similar methodology used by the America Insomnia Survey (AIS). Population-based epidemiological survey respondents (n = 2011) completed the Brief Insomnia Questionnaire (BIQ), a validated scale generating DSM-IV, DSM-5, ICD-10, and ICSD-2 insomnia disorder. The weighted prevalence of difficulty falling asleep, difficulty staying asleep, waking up too early, and non-restorative sleep that occurred ≥3 days per week was 14.0%, 28.3%, 32.1%, and 39.9%, respectively. When quantitative criteria were included, the prevalence dropped the most from 39.9% to 8.4% for non-restorative sleep, and the least from 14.0% to 12.9% for difficulty falling asleep. The weighted prevalence of DSM-IV, ICD-10, ICSD-2, and any of the three insomnia disorders was 22.1%, 4.7%, 15.1%, and 22.1%, respectively; for DSM-5 insomnia disorder, it was 10.8%. Compared with 22.1%, 3.9%, and 14.7% for DSM-IV, ICD-10, and ICSD-2 in the AIS, cross-cultural difference in the prevalence of insomnia disorder is less than what is expected. The prevalence is reduced by half from DSM-IV to DSM-5. ICD-10 insomnia disorder has the lowest prevalence, perhaps because excessive concern and preoccupation, one of its diagnostic criteria, is not always present in people with insomnia. Copyright © 2014 Elsevier B.V. All rights reserved.

  4. The Malaria in Pregnancy Library: a bibliometric review

    Directory of Open Access Journals (Sweden)

    van Eijk Anna M

    2012-10-01

    Full Text Available Abstract Background The Malaria in Pregnancy (MiP Library is a bibliographic database that was created by the MiP Consortium in 2005 and is updated every four months using a standardized search protocol. A bibliometric review was conducted of the contents of the Library to determine dynamics in the type, content and volume of literature on malaria in pregnancy over time. Methods Data on year of publication, type, language, country of first-author affiliation and content (topic were extracted from entries in the MiP Library and plotted over time. Results By January 2012, the MiP Library contained 5,346 entries, consisting of 3,721 journal articles (69.6%, 697 reports (13.0%, 219 academic theses (4.1%, 92 books or book chapters (1.7%, 487 conference proceedings (9.1%, 68 registered studies (1.3% and 62 ‘other’ (1.2%. Most of the sources were in English language (87.3%, followed by French (7.5% and Spanish (1.5%. Over 40% of source material was publicly available online (42.4% and the remaining with restricted access (35.0% or otherwise unavailable (22.7%. The number of journal articles related to malaria in pregnancy increased from 41 in the 1960s, to 708 in the 1990s, and 1,895 between 2000 and 2009, and the variety of themes has increased over time. English-language articles were sourced from 737 different journals. The top three journals were the American Journal of Tropical Medicine and Hygiene (184, Malaria Journal (158 and the Transactions of the Royal Society of Tropical Medicine and Hygiene (131. Conclusion The last decade has seen a dramatic increase in publications related to malaria in pregnancy, and an increasing proportion of these are publically available online. The MiP Library is a useful, scholarly source for literature and systematic reviews related to malaria in pregnancy.

  5. Examination of the impact of animal and dairy science journals based on traditional and newly developed bibliometric indices.

    Science.gov (United States)

    Malesios, C; Abas, Z

    2012-12-01

    Using traditional bibliometric indices such as the well-known journal impact factor (IFAC), as well as other more recently developed measures like the (journal) h-index and modifications, we assessed the impact of most prolific scientific journals in the field of animal and dairy science. To achieve this end, we performed a detailed investigation on the evaluation of journals quality, using a total of 50 journals selected from the category of "Agriculture, Dairy & Animal Science" included in the Thomson Reuters' (formerly Institute of Scientific Information, ISI) Web of Science. Our analysis showed that among the top journals in the field are the Journal of Dairy Research, the Journal of Dairy Science, and the Journal of Animal Science. In particular, the Journal of Animal Science, the most productive and frequently cited journal, has shown rapid development, especially in recent years. The majority of the top-tier, highly cited articles are those associated with the description of statistical methodology and the standard chemical analytical methodologies.

  6. Review of Patent Portfolio Based on Bibliometrics%我国专利组合文献研究综述

    Institute of Scientific and Technical Information of China (English)

    谢智敏; 郭倩玲; 伊雷; 张建文

    2015-01-01

    By using the bibliometric method,this paper has made a statistical analysis on journal theses of patent portfolio, which includes publishing years,authors,journals,and key words.The paper reviews the research development of patent portfolio in China from four aspects of patent portfolio research such as theoretical system,patent portfolio management re﹣search,patent portfolio theory application and patent portfolio research on strategy.Through the analysis result,this paper dissects the present situation and some problems on the research of patent portfolio,and gives some suggestion.%应用文献计量分析的方法,对国内关于专利组合研究论文进行统计分析,统计论文发表的年度分布、作者、期刊、关键词等。从专利组合基础理论研究、专利组合管理研究、专利组合理论的应用、面向战略的专利组合研究等4个方面综述国内专利组合领域的研究现状,指出存在的问题并提出相应的建议。

  7. Comparing Relationships among Yield and Its Related Traits in Mycorrhizal and Nonmycorrhizal Inoculated Wheat Cultivars under Different Water Regimes Using Multivariate Statistics

    Directory of Open Access Journals (Sweden)

    Armin Saed-Moucheshi

    2013-01-01

    Full Text Available Multivariate statistical techniques were used to compare the relationship between yield and its related traits under noninoculated and inoculated cultivars with mycorrhizal fungus (Glomus intraradices; each one consisted of three wheat cultivars and four water regimes. Results showed that, under inoculation conditions, spike weight per plant and total chlorophyll content of the flag leaf were the most important variables contributing to wheat grain yield variation, while, under noninoculated condition, in addition to two mentioned traits, grain weight per spike and leaf area were also important variables accounting for wheat grain yield variation. Therefore, spike weight per plant and chlorophyll content of flag leaf can be used as selection criteria in breeding programs for both inoculated and noninoculated wheat cultivars under different water regimes, and also grain weight per spike and leaf area can be considered for noninoculated condition. Furthermore, inoculation of wheat cultivars showed higher value in the most measured traits, and the results indicated that inoculation treatment could change the relationship among morphological traits of wheat cultivars under drought stress. Also, it seems that the results of stepwise regression as a selecting method together with principal component and factor analysis are stronger methods to be applied in breeding programs for screening important traits.

  8. Type of evidence behind point-of-care clinical information products: a bibliometric analysis.

    Science.gov (United States)

    Ketchum, Andrea M; Saleh, Ahlam A; Jeong, Kwonho

    2011-02-18

    Point-of-care (POC) products are widely used as information reference tools in the clinical setting. Although usability, scope of coverage, ability to answer clinical questions, and impact on health outcomes have been studied, no comparative analysis of the characteristics of the references, the evidence for the content, in POC products is available. The objective of this study was to compare the type of evidence behind five POC clinical information products. This study is a comparative bibliometric analysis of references cited in monographs in POC products. Five commonly used products served as subjects for the study: ACP PIER, Clinical Evidence, DynaMed, FirstCONSULT, and UpToDate. The four clinical topics examined to identify content in the products were asthma, hypertension, hyperlipidemia, and carbon monoxide poisoning. Four indicators were measured: distribution of citations, type of evidence, product currency, and citation overlap. The type of evidence was determined based primarily on the publication type found in the MEDLINE bibliographic record, as well as the Medical Subject Headings (MeSH), both assigned by the US National Library of Medicine. MeSH is the controlled vocabulary used for indexing articles in MEDLINE/PubMed. FirstCONSULT had the greatest proportion of references with higher levels of evidence publication types such as systematic review and randomized controlled trial (137/153, 89.5%), although it contained the lowest total number of references (153/2330, 6.6%). DynaMed had the largest total number of references (1131/2330, 48.5%) and the largest proportion of current (2007-2009) references (170/1131, 15%). The distribution of references cited for each topic varied between products. For example, asthma had the most references listed in DynaMed, Clinical Evidence, and FirstCONSULT, while hypertension had the most references in UpToDate and ACP PIER. An unexpected finding was that the rate of citation overlap was less than 1% for each topic

  9. Algebraic Statistics

    OpenAIRE

    Norén, Patrik

    2013-01-01

    Algebraic statistics brings together ideas from algebraic geometry, commutative algebra, and combinatorics to address problems in statistics and its applications. Computer algebra provides powerful tools for the study of algorithms and software. However, these tools are rarely prepared to address statistical challenges and therefore new algebraic results need often be developed. This way of interplay between algebra and statistics fertilizes both disciplines. Algebraic statistics is a relativ...

  10. Analysis of Various Bibliometric Indicators for the Evaluation of Scientific Journals and Scientists

    Science.gov (United States)

    Guz, A. N.; Rushchitsky, J. J.

    2013-05-01

    Features of applying bibliometric indicators for scientific journals and scientists are discussed using, as examples, scientists of the S. P. Timoshenko Institute of Mechanics and the journal Prikladnaya Mekhanika ( International Applied Mechanics), which is published by the institute in Russian and by Springer in English. Old and new scientific databases are described and commented on. Consideration is given to citation as the most popular parameter for bibliometric indicators, the Hirsch and Egghe indices as criteria for the evaluation of scientists, the Hirsch index, Impact-Factor, SJR, SNIP, and RIP as criteria for the evaluation of scientific journals, and a new approach to evaluation based on full-text article requests. In 1991-2011, Prikladnaya Mekhanika ( International Applied Mechanics) had highest indicators among all Ukrainian scientific journals: Impact-Factor = 1.740 in 2005, SJR = 0.240 in 2006, RIP = 1.76 in 2006, SNIP = 2.45 in 2011

  11. A bibliometric analysis of the 50 most cited papers in cleft lip and palate.

    Science.gov (United States)

    Mahon, Nicola A; Joyce, Cormac W

    2015-02-01

    Citation analysis is an established bibliometric method which catalogues papers according to the number of times they have been referenced. It is believed that the total number of citations an article receives reflects its importance among its peers. Never before has a bibliometric analysis been performed in the area of Cleft Lip and Palate. Our citation analysis creates a comprehensive list of the 50 most influential papers in this field. Journals specializing in Cleft Palate, Craniofacial, Plastic Surgery, Maxillofacial Surgery, Aesthetics and Radiology were searched to establish which articles most enriched the specialty over the past 70 years. The results show an interesting collection of papers which reveal developing trends in surgical techniques. These landmark papers mould and influence management and decision-making today.

  12. Bibliometric study of pedagogical sciences’ contents in the corpus of Transformación journal

    Directory of Open Access Journals (Sweden)

    García, Maylin

    2014-07-01

    Full Text Available The paper describes the findings of a biblio-metric research of Transformación corpus aimed at the knowledge of the main sources consulted by the authors and its correspondence to the main contribution of the scientific community to the development of pedagogical sciences in Cuba. The total number of issues and articles published between 2011 and 2013 were selected as sample. 933 consulted works were studied and the references were grouped into belonging and not-belonging to campus’ authors. Likewise, the papers refers to the number of Ph. D. and master dissertations, research reports and pedagogical journal articles used as references. Finally, the findings were correlated to the selection of books suggested by Chávez, Deler y Suárez in “La actualidad de la pedagogía y la didáctica en Cuba” (2009. Key words: Biliometry, biblio-metric indicators, bibliography refences.

  13. OVERVIEW OF INTERNATIONAL PUBLICATIONS ON THE INNOVATION PROCESS: A BIBLIOMETRIC STUDY

    Directory of Open Access Journals (Sweden)

    Rodrigo Marques de Almeida Guerra

    2015-03-01

    Full Text Available Bibliometric Studies concepts. There were five stages for the configuration of this article: identification of the keyword, Innovation Process, and selection of the search criteria; selection of articles and listing them according to the number of citations under the search criteria; selection of the ten articles with the highest number of citations; analysis of the selected articles; and discussion about the conclusions. The study makes it possible to identify which are the main published articles on Innovation Process based on the number of citations, length of time and date, countries, areas of knowledge, journals, authors and universities of publication. According to the findings, it seems advisable for developing countries’ scholars to foster further research on Innovation Process, as well as more productions on Bibliometric Research as a whole.

  14. 文献计量学术语(二)%Terms of Bibliometrics ( Ⅱ )

    Institute of Scientific and Technical Information of China (English)

    王崇德; 徐久龄

    1998-01-01

    @@ 4行为、描述文献计量学(Behavioral bibliometrics,Descriptive bibliometrics)文献计量学的两个分支. Nicholas和Ritchie于1978年在出版的专著中,首次提出区分行为文献计量学和描述文献计量学的观点.他们认为,行为文献计量学就是用于分析与综合文献之间关系的文献计量学,而且主张文献之间,事实上存在隐含的或表观的文献网络.

  15. Criticism of Levantine Rock Art studies from a bibliometric perspective

    Directory of Open Access Journals (Sweden)

    Berrocal, María Cruz

    1999-06-01

    Full Text Available A historiographic analysis of Levantine rock art studies from their origins to the present using a bibliometric study is presented. The research is based on a bibliographic data base integrated by 521 records (notes, reports, papers, chapters of books and monographs and 235 authors. Three periods (1907-1960, 1960-1980, 1980-1995 have been defined on the basis of the production, themes and characteristics of the authors. The institutionalization of Spanish archaeology, and the partiality and localism of current research are stressed. The huge activity of local scholars is remarkable in the first period. In the second one the number of authors and they monopolise a large part of the research. The foreign contribution disappears, and female researchers appear Finally, in the third period the percentage of publications increases and the descentralization of the study of Levantine rock art takes place. The independent authors as well as researchers assigned to regional administrations prevail over the academic researchers. The most relevant conclusion of this study is the persistence of iconography and simple description as the main aims of research on Levantine rock art during the entire century.

    Presentamos un análisis historiográfico de la investigación del arte levantino desde su comienzo hasta nuestros días, a través de un estudio bibliométrico basado en una muestra de 521 registros (notas, comunicaciones en congresos, artículos, capítulos de libros y monografías y 235 autores, que consideramos suficientemente representativa. Hemos definido tres períodos (1907-1960, 1960-1980, 1980-1995 a partir de la producción, la temática y las características de autor. Hacemos hincapié en la institucionalización de la arqueología española, el personalismo y el actual localismo de la investigación. La primera etapa destaca por la gran actividad de eruditos locales, mientras que en la segunda el número de autores se reduce

  16. A bibliometric based review on social entrepreneurship and its establishment as a field of research

    OpenAIRE

    Sassmannshausen, Sean Patrick; Volkmann, Christine

    2013-01-01

    This paper provides an overview on the state of art of research on social entrepreneurship and the establishment of this topic in the academic world. It uses scientometric methods, especially bibliometrics, in measuring the maturity of social entrepreneurship research. The empirical part reveals the increasing number of literature, the institutionalization of social entrepreneurship in seven dimensions, the emergence of thematic clusters, and methodological issue. The paper makes concrete sug...

  17. Scientific publications from Arab world in leading journals of Integrative and Complementary Medicine: a bibliometric analysis

    OpenAIRE

    Zyoud, Sa’ed H.; Al-Jabi, Samah W; Sweileh, Waleed M.

    2015-01-01

    Background Bibliometric analysis is increasingly employed as a useful tool to assess the quantity and quality of research performance. The specific goal of the current study was to evaluate the performance of research output originating from Arab world and published in international Integrative and Complementary Medicine (ICM) journals. Methods Original scientific publications and reviews from the 22 Arab countries that were published in 22 international peer-reviewed ICM journals during all ...

  18. Innovation and decision-making process in reverse logistics: a bibliometric analysis

    OpenAIRE

    Fernando Antonio Guimarães Tenório; Débora Eleonora Pereira da Silva; Antonio Luiz Rocha Dacorso

    2014-01-01

    This work aimed to make a bibliometric analysis on empirical studies that focus on the reverse logistics process. Papers published in two major events of management and a production engineering were collected during the years 2007-2012. To perform the analysis assumptions were adopted as the concepts of innovation and decision-making. 43 articles were analyzed and it was found that, in most cases, organizations choose to deploy reverse logistics as a means to solving problems related to envir...

  19. PHENOMENOLOGY, IT’S USE IN NURSING SCIENTIFIC PRODUCTION: BIBLIOMETRIC STUDY 2010-2014

    Directory of Open Access Journals (Sweden)

    Raúl Fernando Guerrero-Castañeda

    2015-07-01

    Full Text Available Phenomenology emerges as a philosophy with Husserl; It´s the study of phenomena, it provides access to human consciousness in nursing, to understand the meaning of being human. The bibliometric analysis is useful to describe and evaluate scientific products reported in scientific journals. The objective is to analyze the use of phenomenology in nursing production with bibliometric indicators. Materials and methods. Retrospective descriptive bibliometric study. Articles published in indexed journals in databases Scielo and CUIDEN Foundation Index. Descriptors: "Fenomenología" "Enfermería" (Spanish, “Fenomenología” “Enfermagem” (Portuguese, "Phenomenology" "Nursing" (English, lapse 2010-2014, search performed in February 2015. Results and Discussion. Sample (n = 142. Journals with more publications: Revista Paraninfo Digital (9.2%, Ciência, Cuidado e Saúde, Revista Latino-Americana de Enfermagem and Texto & Contexto Enfermagem (7%. Knowledge Area: Adult Nursing (18.3%; Topics: Teaching in nursing (14.7%, Cancer and Discipline of Nursing (9.8%, Care (7.7%; Population: Nurses (25%. Country: Brazil (69.2%; Keywords: Nursing (11.73%, Qualitative Research (6.9%; Language: Portuguese (50%; Original articles (88%; Phenomenological approach: Social Alfred Schütz (33.5%; Sampling: Intentional (64.62%; Technique used: Interview (42.9%. The phenomenology is a method and a philosophy, seeks the truth of phenomena in the deep variety of reality identifying Brazil development in the use of phenomenology. The social approaches are used as superior form of intersubjectivity (subject-phenomenon-society, referring to Alfred Schütz. Conclusions. The use of bibliometrics is an assessment of scientific activity, it is an instrument to approach to use given in nursing to phenomenology as philosophy and method.

  20. State of the interface between conservation and physiology: a bibliometric analysis

    OpenAIRE

    LENNOX, ROBERT; Cooke, Steven J.

    2014-01-01

    Contemporary conservation science benefits from the perspectives of a variety of different disciplines, including a recent synergy with physiology, an interface known as ‘conservation physiology’. To evaluate the degree of interaction between conservation and animal/plant physiology, we conducted three bibliometric analyses. We first pursued the use of the term ‘conservation physiology’ since its first definition in 2006 to determine how frequently it has been used and in which publications. ...

  1. Intra-disciplinary differences in database coverage and the consequences for bibliometric research

    DEFF Research Database (Denmark)

    Faber Frandsen, Tove; Nicolaisen, Jeppe

    2008-01-01

    disciplines focusing on interdisciplinary differences; however, little is known about the potential existence of intradisciplinary differences in database coverage. Focusing on intradisciplinary differences, the article documents large database-coverage differences within two disciplines (economics......Bibliographic databases (including databases based on open access) are routinely used for bibliometric research. The value of a specific database depends to a large extent on the coverage of the discipline(s) under study. A number of studies have determined the coverage of databases in specific...

  2. Bibliometric dimension of innovation communication productivity of Tata Institute of Social Sciences

    OpenAIRE

    Koganuramath, M. M.; Angadi, Mallikarjun; Kademani, B. S.

    2002-01-01

    Bibliometric analysis of 663 papers published by the social scientists of Tata Institute of Social Sciences during 1990-2000 in diverse domains: Criminology and Correctional Administration, Extra Mural Studies, Family and Child Welfare, Health Service Studies, Medical and Psychiatric Social work, Personnel Management and Industrial Relations, Research Methodology, Social Welfare Administration, and Urban and Rural Community Development, and Research Units: Social Work Education and Practice ...

  3. Bibliometric Analysis of the Journal «Psychological Science and Education»

    OpenAIRE

    Shvedovskaya A.A.,; Meshkova N.V.,

    2015-01-01

    This study aims to explore the journal bibliometric characteristics of the journal “Psychological Science and Education”. The citation data were drawn from references of each article of “Psychological Science and Education” during 1996 and 2015. Data retrieved from the Russian Citation Index (E.library.ru) and the Portal of Russian Psychological Publications (Psyjournals.ru) database were used to identify the main cited journals, publications and authors.

  4. A Bibliometric Analysis of the Chinese Librarianship: an International Electronic Journal (2009-2012

    Directory of Open Access Journals (Sweden)

    Har Singh

    2013-06-01

    Full Text Available This article analysed the various bibliometric components of the articles published in the Chinese Librarianship: an International Electronic Journal between 2009 and 2012. Various quality aspects of the 55 articles published in the period were studied. Also revealed are the quantitative growth of articles by number and year, distribution of citations by number and year, range of citations per article, authorship patterns, authorship productivity, most prolific authors, and authors by country.

  5. On house renovation and coauthoring (with a little excursus on the Holy Grail of bibliometrics)

    CERN Document Server

    Piazza, Roberto

    2013-01-01

    More than a paper, this is just a little divertissement about coauthoring, the Hirsch h-index, and bibliometric evaluation in general. Without pretending to yield any general conclusions, what I found rummaging through the physics literature made me think quite a bit. I hope the same will happen to my readers, even it they will likely be much less than 25, which is the audience one of the greatest Italian writers (whom, is left to the reader to single out) addresses to.

  6. Bibliometric analysis of dental education journals, Web of Science, 2007-2013.

    Directory of Open Access Journals (Sweden)

    Javier Moraga

    2014-06-01

    Full Text Available In recent years, several bibliometric evaluations covering various clinical specialties in dentistry have been carried out. However, there are no recent reports in the area of education. The aim of this brief report is to describe the bibliometric profile of dental education journals included in the Web of Science databases (ISI. A bibliometric study of the two dental education journals included in the Science Citation Index expanded database from Web of Science was conducted. Analyze results and Citation Report tools were used to consider the following variables for the total of articles by journal: amount of papers, publication year, affiliated organizations and countries, keywords, number of citations and most cited articles. A total of 1,279 articles were analyzed: Journal of Dental Education (JDE with 956 papers (74.75% and European Journal of Dental Education (EJDE with 323 paperss (25.25%. The United States had the largest number of articles (695, mainly in JDE, and England (110 in EJDE. Consistently, American institutions have the highest productivity in the area. The more used keywords were learning and curriculum. Given the influence that dental education has in all the areas of the profession, it is necessary to further investigate and focus on the quality of research in this area.

  7. [A bibliometric analysis of the Farmacia Hospitalaria journal (2001-2006)].

    Science.gov (United States)

    Ferriols, R; Santos, B; Artacho, S; Clopés, A; Guerrero, M D; Martínez, M J; Ordovás, J P; Otero, M J

    2007-01-01

    To carry out a bibliometric analysis of the Farmacia Hospitalaria journal from 2001 to 2006. A retrospective analysis of all of the articles published in Farmacia Hospitalaria from 2001-2006 was performed and the main bibliometric indicators for production, circulation, distribution and sales were calculated. 416 articles by 1,515 authors were analysed. Original articles were the most predominant with a growth of 30%. There were 4.6 +/- 2.3 authors per article. The Community of Valencia, Catalonia, Madrid and Andalusia were the autonomous communities with the highest levels of production. Four authors had a productivity index of > 1, with one group of 15 authors having an index of > 0.75. Only 14% of articles were included in presentations to congresses and 17% had funding. The subject matters of drug treatment and safety had the highest production levels. The publication delay remained constant. There was a circulation index of 0.74 in Medline. Farmacia Hospitalaria maintained or improved their bibliometric indicators between 2001 and 2006. There has been an increase in the publication of original articles and letters to the editor over recent years and this increase was in line with the journal s strategies. There has also been a decrease in literature reviews. There were some generational changes among the authors although the main authors remained the same. The subject matters and geographical origin of the authors corresponded to areas with the largest development of the specialty in Spain.

  8. Mapping the scientific research on atypical antipsychotic drugs in Spain: a bibliometric assessment.

    Science.gov (United States)

    López-Muñoz, Francisco; Rubio, Gabriel; Molina, Juan D; Shen, Winston W; Pérez-Nieto, Miguel A; Moreno, Raquel; Huelves, Lorena; Noriega, Concha; García-García, Pilar; Alamo, Cecilio

    2013-01-01

    We carried out a bibliometric study on the scientific publications in relation to atypical antipsychotic drugs (AADs) in Spain. We used the EMBASE and MEDLINE databases and we applied some bibliometric indicators of paper production and dispersion (Price's law and Bradford's law, respectively). We also calculated the participation index of the different countries and correlated the bibliometric data with some social and health data (total per capita expenditure on health and gross domestic expenditure on research and development). We collected 656 original papers published between 1988 and 2011. Our study results fulfilled Price's law with scientific production on AADs showing exponential growth (correlation coefficient r = 0.9693, vs. r = 0.9177 after linear adjustment). The most widely studied drugs were risperidone (181 papers), olanzapine (143), clozapine (94), and quetiapine (74). Division into Bradford zones yielded a nucleus occupied by the European Psychiatry and European Neuropsychopharmacology (70 articles). Totally 194 different journals were published, with 5 of the first 10 used journals having an impact factor being greater than 4. The publications on AADs in Spain have undergone exponential growth over the studied period, without evidence of reaching a saturation point.

  9. Dermatologic research in the Nordic countries 1989-2008--a bibliometric study.

    Science.gov (United States)

    Gjersvik, Petter; Nylenna, Magne; Jemec, Gregor B E; Haraldstad, Anne-Marie

    2010-11-01

    Bibliometric methods, based on the count of articles published in scientific journals, are increasingly used to evaluate scientific productivity. Bibliometric studies may identify factors that promote or inhibit research performance. We set out to analyze dermatologic research activity in Sweden, Denmark, Finland, and Norway using bibliometric methods. We performed repetitive searches on Medline, using the PubMed interface, for the period 1989-2008. Dermatologic articles were defined as all articles in dermatologic journals plus articles in nondermatologic journals in which the address of first author included an institution of dermatology. Articles were allocated to the country of first author's address. The number of dermatologic articles from Sweden, Denmark, Finland, and Norway was 1896 (214 per million inhabitants), 1502 (281), 1017 (196), and 249 (55), respectively. Dermatologic articles represented 1.4%, 2.3%, 1.6%, and 0.6% of each country's total number of Medline articles in English over the same period. Similar patterns were found in relation to gross domestic product, number of dermatologists, and number of medical schools. After 2000, the yearly number of dermatologic articles from Denmark increased and that from Finland decreased, whereas the numbers from Sweden and Norway remained relatively stable. Despite similarities in social and economic conditions in Sweden, Denmark, Finland, and Norway, there are great differences in dermatologic research activity in the four countries, with Denmark performing best and Norway poorest. Historical and cultural factors may partly explain these differences. © 2010 The International Society of Dermatology.

  10. Bibliometric analysis about the scientific production on the Social Skills Field

    Directory of Open Access Journals (Sweden)

    Eliane Colepicolo

    2015-05-01

    Full Text Available Objective. This research consisted to contribute to the systematization of the theoretical and practical field of Social Skills, here called Social Skills Field (SSF. Method. A survey of a representative sample of CHS publications metadata extracted from the 15 scientific and technical literature databases in Psychology available in the CAPES Journals Portal was conducted. After treatment and refinement, this sample resulted in a corpus of metadata 25,409 scientific articles, which is a set of metadata publications, from fields such as author, title, subject, abstract, among others. The corpus of metadata stored in a database allowed the creation of a series of data crossing, resulting in bibliometric indicators. Results. As a result, we have: the SS Corpus, published on the Internet, which enables the inclusion of new metadata and the recovery of almost all scientific articles of the field; 2 bibliometric indicators in CHS, which may offer subsidies for the development and expansion of the field. Conclusions. Bibliometric indicators of the CHS show a representative production growth of social skills in the 1970s. Research on SS is mainly conducted by researchers from the United States, Brazil, United Kingdon and Denmark. The main subject studied are "social skills", "interpersonal relations", "social competence", "empathy", "assertividade", "assertiveness", "children", "adult", "college students"; and the major journals are: Journal of Personality and Social Psychology; Psychological Reports; Journal of Autism and Developmental Disorders and Child Development.

  11. Trends in Scientific Literature on Atypical Antipsychotics in South Korea: A Bibliometric Study

    Science.gov (United States)

    Shen, Winston W.; Pae, Chi-Un; Moreno, Raquel; Rubio, Gabriel; Molina, Juan D.; Noriega, Concha; Pérez-Nieto, Miguel A.; Huelves, Lorena; Álamo, Cecilio

    2013-01-01

    Objective We have carried out a bibliometric study on the scientific publications in relation to atypical or second-generation antipsychotic drugs (SGAs) in South Korea. Methods With the EMBASE and MEDLINE databases, we selected those publications made in South Korea whose title included the descriptors atypic* (atypical*) antipsychotic*, second-generation antipsychotic*, clozapine, risperidone, olanzapine, ziprasidone, quetiapine, sertindole, aripiprazole, paliperidone, amisulpride, zotepine, asenapine, iloperidone, lurasidone, perospirone and blonanserin. We applied some bibliometric indicators of paper production and dispersion with Price's law and Bradford's law, respectively. We also calculated the participation index (PI) of the different countries, and correlated the bibliometric data with some social and health data from Korea (such as total per capita expenditure on health and gross domestic expenditure on research and development). Results We collected 326 original papers published between 1993 and 2011. Our results state fulfilment of fulfilled Price's law, with scientific production on SGAs showing exponential growth (correlation coefficient r=0.8978, as against an r=0.8149 after linear adjustment). The most widely studied drugs were risperidone (91 papers), aripiprazole (77), olanzapine (53), and clozapine (43). Division into Bradford zones yielded a nucleus occupied by the Progress in Neuro-Psychopharmacology and Biological Psychiatry (36 articles). A total of 86 different journals were published, with 4 of the first 10 used journals having an impact factor being greater than 4. Conclusion The publications on SGAs in South Korea have undergone exponential growth over the studied period, without evidence of reaching a saturation point. PMID:23482954

  12. Novel bibliometric scores for evaluating research quality and output: a correlation study with established indexes.

    Science.gov (United States)

    Scotti, Valeria; De Silvestri, Annalisa; Scudeller, Luigia; Abele, Paola; Topuz, Funda; Curti, Moreno

    2016-12-23

    Novel bibliometric indexes (commonly known as altmetrics) are gaining interest within the scientific community and might represent an important alternative measure of research quality and output. We evaluate how these new metrics correlate with established bibliometric indexes such as the impact factor (IF), currently used as a measure of scientific production as well as a criterion for scientific research funding, and how they might be helpful in assessing the impact of research. We calculated altmetrics scores for all the articles published at our institution during a single year and examined the correlation between altmetrics scores and IFs as a measure of research quality and impact in all departments. For all articles from the various departments published in a single year, the altmetrics score and the sum of all IFs showed a strong and significant correlation (Spearman's rho 0.88). The correlation was significant also when the major components of altmetrics, including Facebook, Twitter and Mendeley, were analyzed. The implementation of altmetrics has been found to be easy and effective at both the researcher and librarian levels. The novel bibliographic index altmetrics is consistent and reliable and can complement or be considered a valid alternative to standard bibliometric indexes to benchmark output and quality of research for academic and funding purposes.

  13. Bayesian statistics

    OpenAIRE

    新家, 健精

    2013-01-01

    © 2012 Springer Science+Business Media, LLC. All rights reserved. Article Outline: Glossary Definition of the Subject and Introduction The Bayesian Statistical Paradigm Three Examples Comparison with the Frequentist Statistical Paradigm Future Directions Bibliography

  14. Pattern and determinants of HIV research productivity in sub-Saharan Africa: bibliometric analysis of 1981 to 2009 PubMed papers

    Directory of Open Access Journals (Sweden)

    Uthman Olalekan A

    2010-03-01

    Full Text Available Abstract Background Several bibliometric studies have been published on AIDS. The findings obtained from these studies have provided a general picture of the history and growth of AIDS literature. However, factors related to variation in HIV research productivity in sub-Saharan Africa have not been examined. Therefore, this study aims to fill some of the gap in existing research to provide insights into factors associated with HIV research productivity in sub-Saharan Africa. Methods A bibliometric analysis regarding sub-Saharan Africa HIV/AIDS research was conducted in the PubMed database for the period of 1981 to 2009. The numbers of HIV research articles indexed in PubMed was used as surrogate for total HIV research productivity. Series of univariable and multivariable negative binomial regression models were used to explore factors associated with variation in HIV research productivity in sub-Saharan Africa. Results First authors from South Africa, Uganda and Kenya contributed almost half of the total number of HIV articles indexed in PubMed between 1981 and 2009. Uganda, Zimbabwe and Malawi had better records when the total production was adjusted for gross domestic product (GDP. Comoros, the Gambia and Guinea-Bissau were the most productive countries when the total products were normalized by number of people with HIV. There were strong positive and statistically significant correlation between countries number of indexed journal (Pearson correlation r = 0.77, p = .001, number of higher institutions (r = 0.60, p = .001, number of physicians (r = 0.83, p = .001 and absolute numbers of HIV articles. Conclusions HIV research productivity in Africa is highly skewed. To increase HIV research output, total expenditure on health (% of GDP, private expenditure on health, and adult literacy rate may be important factors to address.

  15. Scientific literature on infectious diseases affecting livestock animals, longitudinal worldwide bibliometric analysis.

    Science.gov (United States)

    Ducrot, Christian; Gautret, Marjolaine; Pineau, Thierry; Jestin, André

    2016-03-14

    The objectives of this bibliometric analysis of the scientific literature were to describe the research subjects and the international collaborations in the field of research on infectious diseases in livestock animals including fishes and honeybees. It was based on articles published worldwide from 2006 through 2013. The source of data was the Web of Science, Core collection(®) and only papers fully written in English were considered. Queries were built that combined 130 descriptors related to animal species and 1213 descriptors related to diseases and pathogens. To refine and assess the accuracy of the extracted database, supplementary filters were applied to discard non-specific terms and neighbouring topics, and numerous tests were carried out on samples. For pathogens, annotation was done using a thematic terminology established to link each disease with its corresponding pathogen, which was in turn classified according to its family. A total of 62,754 articles were published in this field during this 8-year period. The average annual growth rate of the number of papers was 5%. This represents the reference data to which we compared the average annual growth rate of articles produced in each of the sub-categories that we defined. Thirty-seven percent of the papers were dedicated to ruminant diseases. Poultry, pigs and fishes were covered by respectively 21, 13 and 14% of the total. Thirty-seven percent of papers concerned bacteria, 33% viruses, 19% parasites, 2% prions, the remaining being multi-pathogens. Research on virology, especially on pigs and poultry, is increasing faster than the average. There also is increasing interest in monogastric species, fish and bees. The average annual growth rate for Asia was 10%, which is high compared to 3% for Europe and 2% for the Americas, indicating that Asia is currently playing a leading role in this field. There is a well established network of international collaborations. For 75% of the papers, the co

  16. Mathematical statistics

    CERN Document Server

    Pestman, Wiebe R

    2009-01-01

    This textbook provides a broad and solid introduction to mathematical statistics, including the classical subjects hypothesis testing, normal regression analysis, and normal analysis of variance. In addition, non-parametric statistics and vectorial statistics are considered, as well as applications of stochastic analysis in modern statistics, e.g., Kolmogorov-Smirnov testing, smoothing techniques, robustness and density estimation. For students with some elementary mathematical background. With many exercises. Prerequisites from measure theory and linear algebra are presented.

  17. Exploring the relationship between the engineering and physical sciences and the health and life sciences by advanced bibliometric methods.

    Directory of Open Access Journals (Sweden)

    Ludo Waltman

    Full Text Available We investigate the extent to which advances in the health and life sciences (HLS are dependent on research in the engineering and physical sciences (EPS, particularly physics, chemistry, mathematics, and engineering. The analysis combines two different bibliometric approaches. The first approach to analyze the 'EPS-HLS interface' is based on term map visualizations of HLS research fields. We consider 16 clinical fields and five life science fields. On the basis of expert judgment, EPS research in these fields is studied by identifying EPS-related terms in the term maps. In the second approach, a large-scale citation-based network analysis is applied to publications from all fields of science. We work with about 22,000 clusters of publications, each representing a topic in the scientific literature. Citation relations are used to identify topics at the EPS-HLS interface. The two approaches complement each other. The advantages of working with textual data compensate for the limitations of working with citation relations and the other way around. An important advantage of working with textual data is in the in-depth qualitative insights it provides. Working with citation relations, on the other hand, yields many relevant quantitative statistics. We find that EPS research contributes to HLS developments mainly in the following five ways: new materials and their properties; chemical methods for analysis and molecular synthesis; imaging of parts of the body as well as of biomaterial surfaces; medical engineering mainly related to imaging, radiation therapy, signal processing technology, and other medical instrumentation; mathematical and statistical methods for data analysis. In our analysis, about 10% of all EPS and HLS publications are classified as being at the EPS-HLS interface. This percentage has remained more or less constant during the past decade.

  18. Exploring the relationship between the engineering and physical sciences and the health and life sciences by advanced bibliometric methods.

    Science.gov (United States)

    Waltman, Ludo; van Raan, Anthony F J; Smart, Sue

    2014-01-01

    We investigate the extent to which advances in the health and life sciences (HLS) are dependent on research in the engineering and physical sciences (EPS), particularly physics, chemistry, mathematics, and engineering. The analysis combines two different bibliometric approaches. The first approach to analyze the 'EPS-HLS interface' is based on term map visualizations of HLS research fields. We consider 16 clinical fields and five life science fields. On the basis of expert judgment, EPS research in these fields is studied by identifying EPS-related terms in the term maps. In the second approach, a large-scale citation-based network analysis is applied to publications from all fields of science. We work with about 22,000 clusters of publications, each representing a topic in the scientific literature. Citation relations are used to identify topics at the EPS-HLS interface. The two approaches complement each other. The advantages of working with textual data compensate for the limitations of working with citation relations and the other way around. An important advantage of working with textual data is in the in-depth qualitative insights it provides. Working with citation relations, on the other hand, yields many relevant quantitative statistics. We find that EPS research contributes to HLS developments mainly in the following five ways: new materials and their properties; chemical methods for analysis and molecular synthesis; imaging of parts of the body as well as of biomaterial surfaces; medical engineering mainly related to imaging, radiation therapy, signal processing technology, and other medical instrumentation; mathematical and statistical methods for data analysis. In our analysis, about 10% of all EPS and HLS publications are classified as being at the EPS-HLS interface. This percentage has remained more or less constant during the past decade.

  19. Applied Research Summary on Bibliometrics in Library And Information Field%文献计量学在我国图书情报领域的应用研究进展综述磁

    Institute of Scientific and Technical Information of China (English)

    安源; 张玲

    2014-01-01

    文章选取CNKI为检索工具,以1980-2012年间发表的4948篇图书情报领域文献计量学研究的文献作为分析数据,首先通过年度文献累计分布对文献计量学的整体研究发展进行阶段划分,并对其中文关键词进行详细分析,其次着重从四个方面综述我国图书情报领域文献计量学的应用研究现状,最后提出文献计量学应用研究中存在的不足,展望其未来发展趋势。%On the basis of CNKI full text database,this paper makes a statistical analysis of 4948 articles regarding biblio-metrics published from 1980 to 2012 in library and information field.First, through the annual literature distribution , it judges the development stages of bibliometrics.At the same time, it carries out detailed analysis on Chinese keywords.Secondly, it summari-zes the applied research status from four aspects of our library and information field, Finally,it points out the deficiency of current applied research ,and this paper also discusses the present situation and development trend of applied research on bibliometrics.

  20. Bibliometrics as a Performance Measurement Tool for Research Evaluation: The Case of Research Funded by the National Cancer Institute of Canada

    Science.gov (United States)

    Campbell, David; Picard-Aitken, Michelle; Cote, Gregoire; Caruso, Julie; Valentim, Rodolfo; Edmonds, Stuart; Williams, Gregory Thomas; Macaluso, Benoit; Robitaille, Jean-Pierre; Bastien, Nicolas; Laframboise, Marie-Claude; Lebeau, Louis-Michel; Mirabel, Philippe; Lariviere, Vincent; Archambault, Eric

    2010-01-01

    As bibliometric indicators are objective, reliable, and cost-effective measures of peer-reviewed research outputs, they are expected to play an increasingly important role in research assessment/management. Recently, a bibliometric approach was developed and integrated within the evaluation framework of research funded by the National Cancer…

  1. Medical Ethics: Subject, Function, and Trends:A Comparative Study of Medical Ethics in Chinese and English Bibliometric%医学伦理学学科、功能与发展之一:中外医学伦理学文献计量比较研究

    Institute of Scientific and Technical Information of China (English)

    蒋兰慧; 秦川; 黄进; 刘雪梅; 李琰; 姜洁; 沈建通; 李幼平; 邓绍林; 吴泰相; 陈宝清; 谢之易; 秦超毅; 于志渊

    2012-01-01

    Objective Based on evidence-based medicine systematic research and literature analysis methods, to make a quantitative and qualitative analysis on Chinese and No-Chinese literatures with subject of Medical Ethics. Concise and analyze the law and trends of subject development, to provide baseline data and decision-making reference for the relevant decision-making and follow-up study. Method We analyzed keywords in medical ethics articles in PubMed and CNKI database, and developed subject charts, research field relationship charts, and strategy coordination charts using word co-occurrence, PFNET algorithms, and visualization methods. Result Literatures collected from PubMed is six times than that from CNKI. Medical ethics research in China, starting later than abroad almost 35 years, is still at the preliminary stage of development. Eight matured research fields are formed as Morals, Ethical review, Physician-Patient relations, clinical trial, euthanasia, medical ethics education, clinical ethics, and health policy outside of China. Comparatively, in China there are only five fields are developed such as Morals, Physician-Patient relations, medical ethics education, bioethics, and medical research. Conclusion Foreign countries more focus on how to employ medical ethics to solve new problems occurred in clinics and medical research, with morals, ethical review, and Physician-Patient relations as the center of research net. Researchers in China pay more attentions on morals and education with morals as the only research net center. So an urgent need is called to make a transition from simply moral research into applied research stressing on both moral education and ethic review.%目的 借鉴循证医学系统研究和文献分析方法,定量与定性分析系统检出的“医学伦理学”中外文献,以部析其学科发展规律及趋势,为相关决策和后续研究提供基线数据和决策参考.方法 计算机检索PubMed和CNKI中与医学伦理学相

  2. Some bibliometric indexes for members of the Scientific Association of Animal Production (ASPA

    Directory of Open Access Journals (Sweden)

    Giuseppe Pulina

    2010-01-01

    Full Text Available This study calculated several bibliometric indexes to analyze the scientific output of 363 members of the Scientific Association of Animal Production (ASPA in Italy, based on their publications listed by ISIThompson, Web of Science database (search period from 1989 until 2006. Five main research areas were considered: AGR/17 (Animal genetics and breeding, AGR/18 (Animal nutrition and feeding, AGR/19 (Animal husbandry, AGR/20 (Poultry, rabbits and fish production and External researcher (Ere. Position groups were: FP (Full Professor, AP (Associate Professor, Re (Researcher, EReUni (scientists working temporarily at the University or professors of an area different from AGR/17-20, and EReInst (scientists working at other institutions. Each institution was classified according to three geographical areas of Italy: North, Centre and South. Main calculated bibliometric indexes were: Ni = total number of papers published by member i over yi years; yi = number of years publishing of member i; Ci. = total number of citations of member i; IFpersonal. = Ci./Ni, Personal Impact factor of member i; Total IFjournal. = Sum of impact factor reported by the ISI-Thompson database of the journal in which a paper of member i was published (Journal Citation Reports Science Edition, 2004; Mean IFjournal. = Mean impact factor of all papers published in journals having a recognized IFjournal. by the ISI-Thompson database for member i; h = number of papers with at least h citations; m = h/y, i.e. average increase of h over the yi years publishing; and a = Ci./h2. Among the studied bibliometric indexes, Ni, Ci., Total IFjournal. and h are reliable, while IFpersonal. and Mean IFjournal. are not, to evaluate the scientific career of Animal Scientists in Italy. FP and members of AGR/17 tend to show the highest values of bibliometric indexes. Most ASPA members work in the North of Italy, which shows the highest median and highest percentage of scientists with maximum values

  3. Harmonic statistics

    Science.gov (United States)

    Eliazar, Iddo

    2017-05-01

    The exponential, the normal, and the Poisson statistical laws are of major importance due to their universality. Harmonic statistics are as universal as the three aforementioned laws, but yet they fall short in their 'public relations' for the following reason: the full scope of harmonic statistics cannot be described in terms of a statistical law. In this paper we describe harmonic statistics, in their full scope, via an object termed harmonic Poisson process: a Poisson process, over the positive half-line, with a harmonic intensity. The paper reviews the harmonic Poisson process, investigates its properties, and presents the connections of this object to an assortment of topics: uniform statistics, scale invariance, random multiplicative perturbations, Pareto and inverse-Pareto statistics, exponential growth and exponential decay, power-law renormalization, convergence and domains of attraction, the Langevin equation, diffusions, Benford's law, and 1/f noise.

  4. Helping Alleviate Statistical Anxiety with Computer Aided Statistical Classes

    Science.gov (United States)

    Stickels, John W.; Dobbs, Rhonda R.

    2007-01-01

    This study, Helping Alleviate Statistical Anxiety with Computer Aided Statistics Classes, investigated whether undergraduate students' anxiety about statistics changed when statistics is taught using computers compared to the traditional method. Two groups of students were questioned concerning their anxiety about statistics. One group was taught…

  5. Are the Most Highly Cited Articles the Ones that are the Most Downloaded? A Bibliometric Study of IRRODL

    Directory of Open Access Journals (Sweden)

    Raidell Avello Martínez

    2015-06-01

    Full Text Available Publication of research, innovation, challenges and successes is of critical importance to the evolution of more effective distance education programming. Publication in peer reviewed journal format is the most prestigious and the most widespread form of dissemination in education and most other disciplines, thus the importance of understanding what is published and its impact on both researchers and practitioners. In this article we identify and classify the leading articles in arguably the leading peer reviewed journals in this discipline. The journal The International Review of Research in Open and Distance Learning (IRRODL is a peer reviewed academic journal that has been published since 2000. The journal has published between 3 and 6 issues annually with between 50 and 111 research articles per volume. In order to assess the general and the particular impact of highly cited articles this work describes the main bibliometric indicators of the IRRODL journal and these are compared with the total galley views in all formats, PDF, HTML, EPUB and MP3, that IRRODL publishes. In addition to identifying characteristics of the most widely cited articles this research determines if there is a correlation between the articles most highly cited by other publishing researchers and the number of views, indicating interest from both practitioners and research communities. The results show a significant and positive relationship between the total number of citations and the number of views received by articles published in the journal, indicating the impact of the journal extends beyond active publishers to practitioner consumers.

  6. A Computer-Aided Bibliometrics System for Journal Citation Analysis and Departmental Core Journal Ranking List Generation

    Directory of Open Access Journals (Sweden)

    Yih-Chearng Shiue

    2004-12-01

    Full Text Available Due to the tremendous increase and variation in serial publications, faculties in department of university are finding it difficult to generate and update their departmental core journal list regularly and accurately, and libraries are finding it difficult to maintain their current serial collection for different departments. Therefore, the evaluation of a departmental core journal list is an important task for departmental faculties and librarians. A departmental core journal list not only helps departments understand research performances of faculties and students, but also helps librarians make decisions about which journals to retain and which to cancel. In this study, a Computer-Aided Bibliometrics System was implemented and two methodologies (JCDF and LibJF were proposed in order to generate a departmental core journal ranking list and make the journal citation analysis. Six departments were taken as examples, with MIS as the major one. One journal citation pattern was found and the ratio of Turning point-to-No. journal was always around 0.07 among the 10 journals and 6 departments. After comparing with four methodologies via overlapping rate and standard deviation distances, the two proposed methodologies were shown to be better than questionnaire and library subscription method.

  7. Osteoporosis is a neglected health priority in Arab World: a comparative bibliometric analysis

    OpenAIRE

    Sweileh, Waleed M.; Al-Jabi, Samah W; Zyoud, Sa’ed H.; Sawalha, Ansam F.; Ghanim, Mustafa A

    2014-01-01

    Osteoporosis is an important health problem with serious consequences. Evaluation of osteoporosis scientific output from Arab countries has not been explored and there are few internationally published reports on research activity about osteoporosis. The main objectives of this study were to analyze the research output originating from Arab countries and 3 Middle Eastern non-Arab countries, particularly Israel, Turkey and Iran in the field of osteoporosis. Original scientific articles or revi...

  8. A comparison of 17 author-level bibliometric indicators for researchers in Astronomy, Environmental Science, Philosophy and Public Health in Web of Science and Google Scholar

    DEFF Research Database (Denmark)

    Wildgaard, Lorna Elizabeth

    2015-01-01

    Author-level bibliometric indicators are becoming a standard tool in research assessment. It is important to investigate what these indicators actually measure to assess their appropriateness in scholar ranking and benchmarking average individual levels of performance. 17 author-level indicators...... were calculated for 512 researchers in Astronomy, Environmental Science, Philosophy and Public Health. Indicator scores and scholar rankings calculated in Web of Science (WoS) and Google Scholar (GS) were analyzed. The indexing policies of WoS and GS were found to have a direct effect on the amount...... rankings with the highest level of agreement between WoS and GS and rankings with the least amount of variance. Expected average performance benchmarks were influenced by how the mean indicator value was calculated. Empirical validation of the aggregate mean h-index values compared to previous studies...

  9. Statistical physics

    CERN Document Server

    Sadovskii, Michael V

    2012-01-01

    This volume provides a compact presentation of modern statistical physics at an advanced level. Beginning with questions on the foundations of statistical mechanics all important aspects of statistical physics are included, such as applications to ideal gases, the theory of quantum liquids and superconductivity and the modern theory of critical phenomena. Beyond that attention is given to new approaches, such as quantum field theory methods and non-equilibrium problems.

  10. The global role of natural disaster fatalities in decision-making: statistics, trends and analysis from 116 years of disaster data compared to fatality rates from other causes

    Science.gov (United States)

    Daniell, James; Wenzel, Friedemann; McLennan, Amy; Daniell, Katherine; Kunz-Plapp, Tina; Khazai, Bijan; Schaefer, Andreas; Kunz, Michael; Girard, Trevor

    2016-04-01

    In this study, analysis is undertaken showing disaster fatalities trends from around the world using the CATDAT Natural Disaster and Socioeconomic Indicator databases from 1900-2015. Earthquakes have caused over 2.3 million fatalities since 1900; however absolute numbers of deaths caused by them have remained rather constant over time. However, floods have caused somewhere between 1.7 and 5.4 million fatalities, mostly in the earlier half of the 20th century (depending on the 1931 China floods). Storm and storm surges (ca. 1.3 million fatalities), on the other hand, have shown an opposite trend with increasing fatalities over the century (or a lack of records in the early 1900s). Earthquakes due to their sporadic nature, do not inspire investment pre-disaster. When looking at the investment in flood control vs. earthquakes, there is a marked difference in the total investment, which has resulted in a much larger reduction in fatalities. However, a key consideration for decision-makers in different countries around the world when choosing to implement disaster sensitive design is the risk of a natural disaster death, compared to other types of deaths in their country. The creation of empirical annualised ratios of earthquake, flood and storm fatalities from the year 1900 onwards vs. other methods of fatalities (cancer, diseases, accidents etc.) for each country using the CATDAT damaging natural disasters database is undertaken. On an annualised level, very few countries show earthquakes and other disaster types to be one of the highest probability methods for death. However, in particular years with large events, annual rates can easily exceed the total death count for a particular country. An example of this is Haiti, with the equivalent earthquake death rate in 2010 exceeding the total all-cause death rate in the country. Globally, fatality rates due to disasters are generally at least 1 order of magnitude lower than other causes such as heart disease. However, in

  11. Statistical methods

    CERN Document Server

    Szulc, Stefan

    1965-01-01

    Statistical Methods provides a discussion of the principles of the organization and technique of research, with emphasis on its application to the problems in social statistics. This book discusses branch statistics, which aims to develop practical ways of collecting and processing numerical data and to adapt general statistical methods to the objectives in a given field.Organized into five parts encompassing 22 chapters, this book begins with an overview of how to organize the collection of such information on individual units, primarily as accomplished by government agencies. This text then

  12. Statistical optics

    CERN Document Server

    Goodman, Joseph W

    2015-01-01

    This book discusses statistical methods that are useful for treating problems in modern optics, and the application of these methods to solving a variety of such problems This book covers a variety of statistical problems in optics, including both theory and applications.  The text covers the necessary background in statistics, statistical properties of light waves of various types, the theory of partial coherence and its applications, imaging with partially coherent light, atmospheric degradations of images, and noise limitations in the detection of light. New topics have been introduced i

  13. Histoplasmosis Statistics

    Science.gov (United States)

    ... Foodborne, Waterborne, and Environmental Diseases Mycotic Diseases Branch Histoplasmosis Statistics Recommend on Facebook Tweet Share Compartir How common is histoplasmosis? In the United States, an estimated 60% to ...

  14. Statistical distributions

    CERN Document Server

    Forbes, Catherine; Hastings, Nicholas; Peacock, Brian J.

    2010-01-01

    A new edition of the trusted guide on commonly used statistical distributions Fully updated to reflect the latest developments on the topic, Statistical Distributions, Fourth Edition continues to serve as an authoritative guide on the application of statistical methods to research across various disciplines. The book provides a concise presentation of popular statistical distributions along with the necessary knowledge for their successful use in data modeling and analysis. Following a basic introduction, forty popular distributions are outlined in individual chapters that are complete with re

  15. Harmonic statistics

    Energy Technology Data Exchange (ETDEWEB)

    Eliazar, Iddo, E-mail: eliazar@post.tau.ac.il

    2017-05-15

    The exponential, the normal, and the Poisson statistical laws are of major importance due to their universality. Harmonic statistics are as universal as the three aforementioned laws, but yet they fall short in their ‘public relations’ for the following reason: the full scope of harmonic statistics cannot be described in terms of a statistical law. In this paper we describe harmonic statistics, in their full scope, via an object termed harmonic Poisson process: a Poisson process, over the positive half-line, with a harmonic intensity. The paper reviews the harmonic Poisson process, investigates its properties, and presents the connections of this object to an assortment of topics: uniform statistics, scale invariance, random multiplicative perturbations, Pareto and inverse-Pareto statistics, exponential growth and exponential decay, power-law renormalization, convergence and domains of attraction, the Langevin equation, diffusions, Benford’s law, and 1/f noise. - Highlights: • Harmonic statistics are described and reviewed in detail. • Connections to various statistical laws are established. • Connections to perturbation, renormalization and dynamics are established.

  16. Standards for the application of bibliometrics in the evaluation of individual researchers working in the natural sciences

    CERN Document Server

    Bornmann, Lutz

    2013-01-01

    Although bibliometrics has been a separate research field for many years, there is still no uniformity in the way bibliometric analyses are applied to individual researchers. Therefore, this study aims to set up standards for the use of bibliometrics in the evaluation of individual researchers working in the natural sciences. 2005 saw the introduction of the h index, which gives information about a researcher's productivity and the impact of his or her publications in a single number (h is the number of publications with at least h citations); however, it is not possible to cover the multidimensional complexity of research performance and to undertake inter-personal comparisons with this number. This study therefore includes recommendations for a set of indicators to be used for evaluating researchers. Our standards relate to the selection of data on which an evaluation is based, the analysis of the data and the presentation of the results.

  17. Comparative Analysis of Economic Statistics of Chinese Textile Industry%中国纺织产业经济统计数据比较分析

    Institute of Scientific and Technical Information of China (English)

    王济平; 刘亚菲

    2015-01-01

    With the development of national economy and the arrival of globalization, statistical data plays a more and more important role in society research. As a traditional industry of China, textile industry has been the focus of research, but some problems remain in actual statistics data of textile, such as statistical inconsistencies, vague definitions, missing data. So establishing a unified standard statistical data system, using unified data collection software, building data publishing platform by government to realize data-matching and data-sharing for accuracy has become a necessity.%随着国民经济的发展和全球化时代的到来,统计数据在社会中的作用越来越显著。纺织产业作为我国具有一定优势的传统产业一直是研究的重点,但在查找中国纺织统计数据时发现其存在统计口径不一致,产业分类标准不匹配,概念定义不清晰以及数据缺失等问题。因此文章针对这些问题提出建立标准统一的数据统计制度,规范使用统一的数据收集软件,建设政府统一数据发布平台,加强非官方统计机构的作用等解决对策,实现纺织产业经济统计数据的匹配与共享,确保数据的真实准确。

  18. [Why are there few publications by the Argentine gastroenterology? Considerations on a bibliometric analysis of Argentine publications on gastroenterology].

    Science.gov (United States)

    Barreyro, Fernando J; Krabshuis, Justus; Planzer del Campo, Marcela; Bai, Julio C

    2009-03-01

    The publication of scientific findings is the main way to communicate advances. Our aim was to perform a bibliometric and comparative analysis of the Argentinean gastroenterological research output. We analyzed Argentinean gastroenterological publications selectively retrieved from LILACS (between years 1982-2006) and EMBASE (1996-2007) databases by means of specially constructed filter based on author address and subject headings. The global Argentinean scientific research output is far below that of developed countries and has been affected in direct manner by economic, political and social disturbances in the country. The gastroenterological research output from Argentina represent about 6% of national biomedical research. While 54% belongs to gastroenterology and 46% to hepatology, 65% are based on clinical research and 67% were originally contributions. Only 11% have been published in high impact factor journals. The comparative analysis within countries with health indicators similarities has shown a low biomedical and gastroenterology research output, however, the rate of acceptance at the 18 top gastroenterological journals is acceptable (15%). The contributions of registered specialists were lower for gastroenterologists compared with those from hepatologists (8.7% and 16.4% respectively). The research projects at public hospital funded by the pharmaceutical industry overcome those funded independently. Indeed, it seems that the independent research is being progressively replaced by that supported by the industry due to economic benefits for researchers even when there is a very low participation rate in publications (3%) by Argentinean researchers. We conclude that the Argentinean biomedical and gastroenterological research output is scanty compared with developed countries and countries with comparable health indicators. Our analysis suggests that efforts must be taken to attain objectives directed to develop and improve the Argentinean biomedical and

  19. Scan Statistics

    CERN Document Server

    Glaz, Joseph

    2009-01-01

    Suitable for graduate students and researchers in applied probability and statistics, as well as for scientists in biology, computer science, pharmaceutical science and medicine, this title brings together a collection of chapters illustrating the depth and diversity of theory, methods and applications in the area of scan statistics.

  20. Statistical Diversions

    Science.gov (United States)

    Petocz, Peter; Sowey, Eric

    2008-01-01

    In this article, the authors focus on hypothesis testing--that peculiarly statistical way of deciding things. Statistical methods for testing hypotheses were developed in the 1920s and 1930s by some of the most famous statisticians, in particular Ronald Fisher, Jerzy Neyman and Egon Pearson, who laid the foundations of almost all modern methods of…

  1. Practical Statistics

    CERN Document Server

    Lyons, L

    2016-01-01

    Accelerators and detectors are expensive, both in terms of money and human effort. It is thus important to invest effort in performing a good statistical anal- ysis of the data, in order to extract the best information from it. This series of five lectures deals with practical aspects of statistical issues that arise in typical High Energy Physics analyses.

  2. Bibliometrics-based analysis on competitive intelligence in China

    Institute of Scientific and Technical Information of China (English)

    QIU; Junping; SU; Jinyan

    2008-01-01

    By applying to the theories and methodologies on informetrics,the authors collected the statistical data of relevant published articles,and then made some analysis including the prolific authors community,the long tail distribution of authors,and the disciplinary distribution of the published articles.To conclude,some development trends and suggestions were put forward for the reference.

  3. [Bibliometric study of the Journal Nutrición Hospitalaria for the period 2001-2005: Part 1, Analysis of the scientific production].

    Science.gov (United States)

    Casterá, V T; Sanz-Valero, J; Juan-Quilis, V; Wanden-Berghe, C; Culebras, J M; García de Lorenzo y Mateos, A

    2008-01-01

    To assess the scientific activity and information production of the journal Nutrición Hospitalaria, for the period 2001-2005 by means of a Bibliometric study. Cross-sectional descriptive study of the results obtained from the analysis of the articles published in the journal Nutrición Hospitalaria. The data were obtained by consulting the electronic version through the Web. In those cases in which there was a link breakdown, and thus, the inability to have access to the electronic document the printed version was consulted. All the documental possibilities were taken into account with the exception of communications to congresses. A total of 345 articles were published, 187 (54.20%) being original articles. The geographical distribution of the first author was Spanish in 287 articles (83.19%) and Latin American in 27 (7.83%). Most of the articles are from health care centers (172 articles (49.86%)), and the cooperation index being 4.15. Madrid is the most productive province, for both the absolute and adjusted frequencies. The median number of references per article is 18, the mean being 23.52 (95% CI 20.93 - 26.10). The predominant language was Spanish, with 308 articles (89.28%). Nutrición Hospitalaria may be considered as a reference journal regarding information and scientific communication on Nutrition for both the Spanish and Latin American communities. The bibliometric parameters studied compare with those verified for the remaining top of the list Spanish scientific journals on health sciences.

  4. [Bibliometric study of scientific output published by the Revista Panamericana de Salud Pública/Pan American Journal of Public Health from 1997-2012].

    Science.gov (United States)

    Sanz-Valero, Javier; Casterá, Vicente Tomás; Wanden-Berghe, Carmina

    2014-02-01

    To characterize the scientific output of the Revista Panamericana de Salud Pública/Pan American Journal of Public Health (RPSP) as a scientific publication of reference in the public health sector in the Americas. A descriptive cross-sectional study was conducted based on the articles published in the RPSP from 1997-2012. Bibliometric indicators of productivity (documents published, languages, authorship, and indices of productivity and collaboration); impact (impact factor according to the SciELO Network, Journal Citation Report and SCImago); key words; and bibliographic references, their structure (document type and main nucleus of Bradford) and degree of obsolescence (Burton and Kebler half-life, and Price index), were analyzed. A total of 2 815 articles with a median of 3 authors and 2 institutions per article were published. The percentage of original research articles increased in 2008-2012 compared to 2003-2007 and 1997-2002 (P < 0.001). The predominant language was Spanish, displaced by English in the last 5 years. A total of 88.76% of the key words referred to the Health Sciences Descriptors (DeCS) and had a public health and community orientation related to the Americas. The Burton and Kebler half-life of bibliographic references was 8 years, although it decreased to 5 years in 2012. The Price index was 20.47% and the nucleus of Bradford was made up of 20 mainstream journals. The percentage of self-citation was low (2.07%). The RPSP is an international publication with bibliometric indicators similar to those of the most representative Latin American health science journals, with improvements in the recent years studied that lead it to fully meet international publishing criteria.

  5. Introductory statistics

    CERN Document Server

    Ross, Sheldon M

    2005-01-01

    In this revised text, master expositor Sheldon Ross has produced a unique work in introductory statistics. The text's main merits are the clarity of presentation, contemporary examples and applications from diverse areas, and an explanation of intuition and ideas behind the statistical methods. To quote from the preface, ""It is only when a student develops a feel or intuition for statistics that she or he is really on the path toward making sense of data."" Ross achieves this goal through a coherent mix of mathematical analysis, intuitive discussions and examples.* Ross's clear writin

  6. Introductory statistics

    CERN Document Server

    Ross, Sheldon M

    2010-01-01

    In this 3rd edition revised text, master expositor Sheldon Ross has produced a unique work in introductory statistics. The text's main merits are the clarity of presentation, contemporary examples and applications from diverse areas, and an explanation of intuition and ideas behind the statistical methods. Concepts are motivated, illustrated and explained in a way that attempts to increase one's intuition. To quote from the preface, ""It is only when a student develops a feel or intuition for statistics that she or he is really on the path toward making sense of data."" Ross achieves this

  7. Statistics Clinic

    Science.gov (United States)

    Feiveson, Alan H.; Foy, Millennia; Ploutz-Snyder, Robert; Fiedler, James

    2014-01-01

    Do you have elevated p-values? Is the data analysis process getting you down? Do you experience anxiety when you need to respond to criticism of statistical methods in your manuscript? You may be suffering from Insufficient Statistical Support Syndrome (ISSS). For symptomatic relief of ISSS, come for a free consultation with JSC biostatisticians at our help desk during the poster sessions at the HRP Investigators Workshop. Get answers to common questions about sample size, missing data, multiple testing, when to trust the results of your analyses and more. Side effects may include sudden loss of statistics anxiety, improved interpretation of your data, and increased confidence in your results.

  8. Statistical physics

    CERN Document Server

    Wannier, Gregory H

    2010-01-01

    Until recently, the field of statistical physics was traditionally taught as three separate subjects: thermodynamics, statistical mechanics, and kinetic theory. This text, a forerunner in its field and now a classic, was the first to recognize the outdated reasons for their separation and to combine the essentials of the three subjects into one unified presentation of thermal physics. It has been widely adopted in graduate and advanced undergraduate courses, and is recommended throughout the field as an indispensable aid to the independent study and research of statistical physics.Designed for

  9. Semiconductor statistics

    CERN Document Server

    Blakemore, J S

    1962-01-01

    Semiconductor Statistics presents statistics aimed at complementing existing books on the relationships between carrier densities and transport effects. The book is divided into two parts. Part I provides introductory material on the electron theory of solids, and then discusses carrier statistics for semiconductors in thermal equilibrium. Of course a solid cannot be in true thermodynamic equilibrium if any electrical current is passed; but when currents are reasonably small the distribution function is but little perturbed, and the carrier distribution for such a """"quasi-equilibrium"""" co

  10. Paradigm Agreement and Literature Obsolescence: A Comparative Study in the Literature of the Dead Sea Scrolls.

    Science.gov (United States)

    Heisey, Terry M.

    1988-01-01

    This study used bibliometric reference analysis to compare archaeological and critical papers from the Dead Sea Scrolls literature. Data were gathered on the age of reference, the dates of the scientific (archaeological) research front, and form of publication. The significance of these findings for literature obsolescence is discussed. (50…

  11. Bibliometric analysis of public health research in Africa: The overall trend and regional comparisons

    Directory of Open Access Journals (Sweden)

    Yuh-Shan Ho

    2011-05-01

    Full Text Available Many diseases in Africa can be prevented with appropriate public health interventions. This study aimed to assess the bibliometric characteristics of public health related research articles published by researchers in African institutions from 1991 to 2005. Data used in this study were obtained from the online version of the ISI Web of Science: Science Citation Index Expanded (SCI-Expanded. Articles published between 1991 and 2005 that had the phrase ‘public health’ in the title, author keywords or abstract, and had at least one author whose contact address was in an African country, were selected for analysis. The annual number of public health related articles published by African researchers significantly increased from 28 articles in 1991 to 135 articles in 2005, a 382% increase. International collaboration also increased: from 45% of articles having international collaborators during 1991–1995, to 52% during1996–2000, and to 67% during 2001–2005. Collaborations were mostly with European and North American countries. Keywords, subject categories and collaboration patterns of articles varied across regions, reflecting differences in needs and collaboration networks. Public health related research output, as well as international collaborations, have been increasing in Africa. Regional variation observed in this study may assist policymakers to facilitate the advancement of public health research in different regions of Africa, and could be useful for international organisations in identifying needs and to allocate research funding. Future bibliometric analyses of articles published by African researchers, can consider conducting regional comparisons using standardised methods, as well as describing the overall patterns, in order to provide a more comprehensive view of their bibliometric characteristics.

  12. A bibliometric study of scientific research conducted on second-generation antipsychotic drugs in Singapore.

    Science.gov (United States)

    López-Muñoz, Francisco; Sim, Kang; Shen, Winston Wu; Huelves, Lorena; Moreno, Raquel; Molina, Juan de Dios; Rubio, Gabriel; Noriega, Concha; Pérez-Nieto, Miguel Ángel; Alamo, Cecilio

    2014-01-01

    A bibliometric study was carried out to ascertain the volume and impact of scientific literature published on second-generation antipsychotic drugs (SGAs) in Singapore from 1997 to 2011. A search of the EMBASE and MEDLINE databases was performed to identify articles originating from Singapore that included the descriptors 'atypic* antipsychotic*', 'second-generation antipsychotic*', 'clozapine', 'risperidone', 'olanzapine', 'ziprasidone', 'quetiapine', 'sertindole', 'aripiprazole', 'paliperidone', 'amisulpride', 'zotepine', 'asenapine', 'iloperidone', 'lurasidone', 'perospirone' and 'blonanserin' in the article titles. Certain bibliometric indicators of production and dispersion (e.g. Price's Law on the increase of scientific literature, and Bradford's Law) were applied, and the participation index of various countries was calculated. The bibliometric data was also correlated with some social and health data from Singapore, such as the total per capita expenditure on health and gross domestic expenditure on research and development. From 1997 to 2011, a total of 51 articles on SGAs in Singapore were published. Our results suggested non-fulfilment of Price's Law (r = 0.0648 after exponential adjustment vs. r = 0.2140 after linear adjustment). The most widely studied drugs were clozapine (21 articles), risperidone (16 articles) and olanzapine (8 articles). Division into Bradford zones yielded a nucleus occupied by the Journal of Clinical Psychopharmacology (6 articles) and the Singapore Medical Journal(4 articles). The analysed material was published in a total of 30 journals, with the majority from six journals. Four of these six journals have an impact factor greater than 2. Publications on SGAs in Singapore are still too few to confirm an exponential growth of scientific literature.

  13. Global Research on Artificial Intelligence from 1990–2014: Spatially-Explicit Bibliometric Analysis

    Directory of Open Access Journals (Sweden)

    Jiqiang Niu

    2016-05-01

    Full Text Available In this article, we conducted the evaluation of artificial intelligence research from 1990–2014 by using bibliometric analysis. We introduced spatial analysis and social network analysis as geographic information retrieval methods for spatially-explicit bibliometric analysis. This study is based on the analysis of data obtained from database of the Science Citation Index Expanded (SCI-Expanded and Conference Proceedings Citation Index-Science (CPCI-S. Our results revealed scientific outputs, subject categories and main journals, author productivity and geographic distribution, international productivity and collaboration, and hot issues and research trends. The growth of article outputs in artificial intelligence research has exploded since the 1990s, along with increasing collaboration, reference, and citations. Computer science and engineering were the most frequently-used subject categories in artificial intelligence studies. The top twenty productive authors are distributed in countries with a high investment of research and development. The United States has the highest number of top research institutions in artificial intelligence, producing most single-country and collaborative articles. Although there is more and more collaboration among institutions, cooperation, especially international ones, are not highly prevalent in artificial intelligence research as expected. The keyword analysis revealed interesting research preferences, confirmed that methods, models, and application are in the central position of artificial intelligence. Further, we found interesting related keywords with high co-occurrence frequencies, which have helped identify new models and application areas in recent years. Bibliometric analysis results from our study will greatly facilitate the understanding of the progress and trends in artificial intelligence, in particular, for those researchers interested in domain-specific AI-driven problem-solving. This will be

  14. SEER Statistics

    Science.gov (United States)

    The Surveillance, Epidemiology, and End Results (SEER) Program of the National Cancer Institute works to provide information on cancer statistics in an effort to reduce the burden of cancer among the U.S. population.

  15. Cancer Statistics

    Science.gov (United States)

    ... Resources Conducting Clinical Trials Statistical Tools and Data Terminology Resources NCI Data Catalog Cryo-EM NCI's Role ... Contacts Other Funding Find NCI funding for small business innovation, technology transfer, and contracts Training Cancer Training ...

  16. CMS Statistics

    Data.gov (United States)

    U.S. Department of Health & Human Services — The CMS Center for Strategic Planning produces an annual CMS Statistics reference booklet that provides a quick reference for summary information about health...

  17. Reversible Statistics

    DEFF Research Database (Denmark)

    Tryggestad, Kjell

    2004-01-01

    The study aims is to describe how the inclusion and exclusion of materials and calculative devices construct the boundaries and distinctions between statistical facts and artifacts in economics. My methodological approach is inspired by John Graunt's (1667) Political arithmetic and more recent work...... within constructivism and the field of Science and Technology Studies (STS). The result of this approach is here termed reversible statistics, reconstructing the findings of a statistical study within economics in three different ways. It is argued that all three accounts are quite normal, albeit...... in different ways. The presence and absence of diverse materials, both natural and political, is what distinguishes them from each other. Arguments are presented for a more symmetric relation between the scientific statistical text and the reader. I will argue that a more symmetric relation can be achieved...

  18. Image Statistics

    Energy Technology Data Exchange (ETDEWEB)

    Wendelberger, Laura Jean [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-08-08

    In large datasets, it is time consuming or even impossible to pick out interesting images. Our proposed solution is to find statistics to quantify the information in each image and use those to identify and pick out images of interest.

  19. Accident Statistics

    Data.gov (United States)

    Department of Homeland Security — Accident statistics available on the Coast Guard’s website by state, year, and one variable to obtain tables and/or graphs. Data from reports has been loaded for...

  20. Bibliometric Analysis of the Journal Kemija u industriji for the Period 2000–2009

    OpenAIRE

    Macan, B.

    2011-01-01

    This paper deals with a bibliometric analysis of journal Kemija u industriji for the period 2000–2009. The results of the analysis show that the journal is still dealing with the problem of publishing scientific papers, which was also detected in a previous similar analysis (M. Jokia et al. (2002)). Furthermore, in 82.1 % of categorized papers at least one author is from Croatia, while in 88.4 % at least one author is from neighboring countries (Croatia and other ex-Yugoslavia countries). Thi...

  1. Research fronts analysis : A bibliometric to identify emerging fields of research

    Science.gov (United States)

    Miwa, Sayaka; Ando, Satoko

    Research fronts analysis identifies emerging areas of research through observing co-clustering in highly-cited papers. This article introduces the concept of research fronts analysis, explains its methodology and provides case examples. It also demonstrates developing research fronts in Japan by looking at the past winners of Thomson Reuters Research Fronts Awards. Research front analysis is currently being used by the Japanese government to determine new trends in science and technology. Information professionals can also utilize this bibliometric as a research evaluation tool.

  2. Breast cancer research output, 1945-2008: a bibliometric and density-equalizing analysis

    LENUS (Irish Health Repository)

    Glynn, Ronan W

    2010-12-22

    Abstract Introduction Breast cancer is the most common form of cancer among women, with an estimated 194,280 new cases diagnosed in the United States in 2009 alone. The primary aim of this work was to provide an in-depth evaluation of research yield in breast cancer from 1945 to 2008, using large-scale data analysis, the employment of bibliometric indicators of production and quality, and density-equalizing mapping. Methods Data were retrieved from the Web of Science (WOS) Science Citation Expanded database; this was searched using the Boolean operator, \\'OR\\

  3. Hacia las unidades de bibliometría en las universidades: modelo y funciones

    Directory of Open Access Journals (Sweden)

    Jiménez-Contreras, Evaristo

    2012-09-01

    Full Text Available In recent years, bibliometric indicators have been firmly established as a tool for research management and decision-making in the context of scientific policy. Spanish universities represent one sector that has seen signifi cant growth in the use of indicators. These institutions now find themselves in an ever more competitive environment and therefore have a greater need to have knowledge of the performance of their researchers. Against this background, this paper presents a proposal for the creation of Bibliometric Units in Spanish universities and attempts specifically to illustrate both the model and functions of these units based on three pillars: control of information sources related to research, preparing reports, and advice/training. In addition to the theoretical proposal we present different examples from the universities of Navarra and Granada. The text concludes that such units could represent an important opportunity for jobs in the fi eld of Information Science.

    En los últimos años la bibliometría evaluativa se han consolidado firmemente como herramienta en la gestión de la investigación y toma de decisiones en el ámbito de la política científica. Una de las instituciones donde más está creciendo este uso es en las universidades españolas que cada vez se encuentran en un entorno más competitivo y tienen una mayor necesidad de conocer el rendimiento de sus investigadores. Teniendo en cuenta este contexto en el presente trabajo se expone una propuesta para la creación de unidades de bibliometría en las universidades españolas. El objetivo específico es, por tanto, ilustrar el modelo y funciones de dichas unidades que han de basarse en tres pilares fundamentales: control de las fuentes de la información, realización de informes y asesoramiento y formación. Además de la propuesta teórica se presentan diferentes ejemplos llevados a cabo en las Universidades de Navarra y Granada. El texto concluye subrayando

  4. Política científica colombiana y bibliometría: usos

    Directory of Open Access Journals (Sweden)

    Yuri Jack Gómez

    2005-04-01

    Full Text Available Mi objetivo en esta contribución es el de presentar a consideración del lector una aproximación etnográfica a la política científica y al rol que la bibliometría juega en este contexto. El ensayo se basa en un “trabajo de campo” realizado entre 1996-1997, período en el cual se inició el primer ejercicio de evaluación de revistas científicas colombianas.

  5. World Cities of Scientific Knowledge: Systems, Networks and Potential Dynamics. An Analysis Based on Bibliometric Indicators

    DEFF Research Database (Denmark)

    Matthiessen, Christian Wichmann; Schwarz, Annette Winkel; Find, Søren

    2010-01-01

    This paper is based on identification of the pattern of the upper level of the world city network of knowledge as published in a series of papers.It is our aim to update the findings and relate to the general world city discussion. The structure of the world cities of knowledge network has changed...... over the last decade in favour of south east Asian and south European cities and in disfavour of the traditional centres of North America and north-western Europe. The analysis is based on bibliometric data on the world’s 100 largest cities measured in terms of research output. Then level of co...

  6. The importance of statistical modelling in clinical research : Comparing multidimensional Rasch-, structural equation and linear regression models for analyzing the depression of relatives of psychiatric patients.

    Science.gov (United States)

    Alexandrowicz, Rainer W; Jahn, Rebecca; Friedrich, Fabian; Unger, Anne

    2016-06-01

    Various studies have shown that caregiving relatives of schizophrenic patients are at risk of suffering from depression. These studies differ with respect to the applied statistical methods, which could influence the findings. Therefore, the present study analyzes to which extent different methods may cause differing results. The present study contrasts by means of one data set the results of three different modelling approaches, Rasch Modelling (RM), Structural Equation Modelling (SEM), and Linear Regression Modelling (LRM). The results of the three models varied considerably, reflecting the different assumptions of the respective models. Latent trait models (i. e., RM and SEM) generally provide more convincing results by correcting for measurement error and the RM specifically proves superior for it treats ordered categorical data most adequately.

  7. Statistical Engine Knock Control

    DEFF Research Database (Denmark)

    Stotsky, Alexander A.

    2008-01-01

    A new statistical concept of the knock control of a spark ignition automotive engine is proposed . The control aim is associated with the statistical hy pothesis test which compares the threshold value to the average value of the max imal amplitud e of the knock sensor signal at a given freq uency...

  8. Statistical Inference at Work: Statistical Process Control as an Example

    Science.gov (United States)

    Bakker, Arthur; Kent, Phillip; Derry, Jan; Noss, Richard; Hoyles, Celia

    2008-01-01

    To characterise statistical inference in the workplace this paper compares a prototypical type of statistical inference at work, statistical process control (SPC), with a type of statistical inference that is better known in educational settings, hypothesis testing. Although there are some similarities between the reasoning structure involved in…

  9. Bibliometric analysis of nutrition and dietetics research activity in Arab countries using ISI Web of Science database.

    Science.gov (United States)

    Sweileh, Waleed M; Al-Jabi, Samah W; Sawalha, Ansam F; Zyoud, Sa'ed H

    2014-01-01

    Reducing nutrition-related health problems in Arab countries requires an understanding of the performance of Arab countries in the field of nutrition and dietetics research. Assessment of research activity from a particular country or region could be achieved through bibliometric analysis. This study was carried out to investigate research activity in "nutrition and dietetics" in Arab countries. Original and review articles published from Arab countries in "nutrition and dietetics" Web of Science category up until 2012 were retrieved and analyzed using the ISI Web of Science database. The total number of documents published in "nutrition and dietetics" category from Arab countries was 2062. This constitutes 1% of worldwide research activity in the field. Annual research productivity showed a significant increase after 2005. Approximately 60% of published documents originated from three Arab countries, particularly Egypt, Kingdom of Saudi Arabia, and Tunisia. However, Kuwait has the highest research productivity per million inhabitants. Main research areas of published documents were in "Food Science/Technology" and "Chemistry" which constituted 75% of published documents compared with 25% for worldwide documents in nutrition and dietetics. A total of 329 (15.96%) nutrition - related diabetes or obesity or cancer documents were published from Arab countries compared with 21% for worldwide published documents. Interest in nutrition and dietetics research is relatively recent in Arab countries. Focus of nutrition research is mainly toward food technology and chemistry with lesser activity toward nutrition-related health research. International cooperation in nutrition research will definitely help Arab researchers in implementing nutrition research that will lead to better national policies regarding nutrition.

  10. A bibliometric analysis to illustrate the role of an embedded research capability in South African National Parks

    CSIR Research Space (South Africa)

    Van Wilgen, BW

    2016-04-01

    Full Text Available We conducted a bibliometric analysis of research in or about South African National Parks, published between 2003 and 2013. Our goal was to identify the major research topics, and to examine the role of in-house (“embedded”) researchers in producing...

  11. Revista Educação Especial: a bibliometric study of scientific production in the field of Special Education

    Directory of Open Access Journals (Sweden)

    Rosemary Cristina da Silva

    2013-06-01

    Full Text Available This article presents the results a bibliometric study of the scientific production in the field of Special Education, that aimed to analyze the 147 articles published from 2000-2006 including those published online, totaling 14 issues in the Revista Educação Especial. This journal was chosen as the unit of analysis because it is being the most long-standing journal in the country. The bibliometric analysis of the articles and citations allowed build the following indicators of scientific production: a for articles published: evolution of articles published; typology of the articles, number of pages of articles, authors of the articles, scientific collaboration in the authorship; productivity authors; transiente of the authors; gender, geographic origin and institutional affiliation of the authors; b about the citations made by the authors: thematic of the articles, authors of the citations; the source updating level; origin, typology, languages and format of the sources cited; identification of the resources periodic cited; the core of the journal and secondary areas the field of Special Education. The bibliometric analysis this scientific production this journal demonstrated its consolidation in the area of Special Education. The study Bibliometric of citations made by the authors allowed verify the interdisciplinarity of Special Education with other areas of knowledge. It was verified as to represent the field of Special Education as a medium for information, as well as facilitate the dissemination of research carried out in this area.

  12. Map of Scientific Publication in the Field of Educational Sciences and Teacher Education in Turkey: A Bibliometric Study

    Science.gov (United States)

    Çiftçi, Serife Koza; Danisman, Sahin; Yalçin, Mikail; Tosuntas, Sule Betül; Ay, Yusuf; Sölpük, Nihan; Karadag, Engin

    2016-01-01

    This study aims to create a map for the scientific publications in the field of educational sciences and teacher education in Turkey. A bibliometric analysis was carried out with 7681 articles published in 32 different peer reviewed journals between 2005 and 2014. The findings show that one third of all articles were published in core journals…

  13. Emerging Trends on the Topic of Information Technology in the Field of Educational Sciences: A Bibliometric Exploration

    Science.gov (United States)

    González-Valiente, Carlos Luis

    2015-01-01

    The paper presents a bibliometric analysis on the topic of Information Technology (IT) in the field of Educational Sciences, aimed at envisioning the research emerging trends. The ERIC database is used as a consultation source; the results were subjected to productivity by authors, journals, and term co-occurrence analysis indicators for the…

  14. Music and Affective Phenomena: A 20-Year Content and Bibliometric Analysis of Research in Three Eminent Journals

    Science.gov (United States)

    Diaz, Frank M.; Silveira, Jason M.

    2014-01-01

    The purpose of this study was to establish trends in the study of music and affective phenomena through a content and bibliometric analysis of three eminent music research journals, the "Journal of Research in Music Education", "Psychology of Music", and "Music Perception", for the years 1990 through 2009. Excluding…

  15. Statistical mechanics

    CERN Document Server

    Jana, Madhusudan

    2015-01-01

    Statistical mechanics is self sufficient, written in a lucid manner, keeping in mind the exam system of the universities. Need of study this subject and its relation to Thermodynamics is discussed in detail. Starting from Liouville theorem gradually, the Statistical Mechanics is developed thoroughly. All three types of Statistical distribution functions are derived separately with their periphery of applications and limitations. Non-interacting ideal Bose gas and Fermi gas are discussed thoroughly. Properties of Liquid He-II and the corresponding models have been depicted. White dwarfs and condensed matter physics, transport phenomenon - thermal and electrical conductivity, Hall effect, Magneto resistance, viscosity, diffusion, etc. are discussed. Basic understanding of Ising model is given to explain the phase transition. The book ends with a detailed coverage to the method of ensembles (namely Microcanonical, canonical and grand canonical) and their applications. Various numerical and conceptual problems ar...

  16. Statistical mechanics

    CERN Document Server

    Schwabl, Franz

    2006-01-01

    The completely revised new edition of the classical book on Statistical Mechanics covers the basic concepts of equilibrium and non-equilibrium statistical physics. In addition to a deductive approach to equilibrium statistics and thermodynamics based on a single hypothesis - the form of the microcanonical density matrix - this book treats the most important elements of non-equilibrium phenomena. Intermediate calculations are presented in complete detail. Problems at the end of each chapter help students to consolidate their understanding of the material. Beyond the fundamentals, this text demonstrates the breadth of the field and its great variety of applications. Modern areas such as renormalization group theory, percolation, stochastic equations of motion and their applications to critical dynamics, kinetic theories, as well as fundamental considerations of irreversibility, are discussed. The text will be useful for advanced students of physics and other natural sciences; a basic knowledge of quantum mechan...

  17. Evaluation of the Needs levels of Employees in Boushehr Province's Police :A Comparative Approach Based on Statistical Analysis and Fuzzy Decision Making

    Directory of Open Access Journals (Sweden)

    Reza Siavashi

    2012-01-01

    Full Text Available Satisfy the staff`s needs has positive effects on the other aspects of their jobs.several theories for determining staff`s needs of forecasting behavior are useful and increases manager`s perception of staff`s needs and impressive factors in organization.in this article,for determining priority of staff`s needs in police force of bushehr,with 2 analysis approaches,A five-further model according to expansion of Maslow theory designed that includes dimension of security,social,respect,autonomy and self-actualization.At first,the priority of each needs determine with a standard questionnaire and statistical analysis in view of staffs,then with use of Fuzzy hierarchy analysis technique at view of managers,the priority of each 5 basic needs of staffs processed.Finally,assimilation or difference of staff`s view with managers explain that in both sights,the security need recognized as the most important need,but a differences between managers and staff`s viewpoint about priority of second to five needs exist.

  18. 中国与欧盟环境保护投资统计的比较研究%Comparative research of environmental protection investment statistics between China and EU

    Institute of Scientific and Technical Information of China (English)

    朱建华; 逯元堂; 吴舜泽

    2013-01-01

    The difference between the China and EU in environmental protection investment statistics was compared from 3 aspects of investment concept, statistics statement and investment statistics method. The scale and efficiency of environmental protection investment in China and EU was assessed. Some enlightenment to perfect China environmental protection investment work was put forward by learning the experience of EU environmental protection expenditure statistics. That was clearly defining the principle of environmental protection investment, gradually integration with international concept standards, making standard of environmental protection investment statistics system, establishing scientific statistics methods, linking up with national economic statistics, meeting the needs of economic activity management.%从环境保护(简称环保)投资概念、环保投资统计口径、环保投资统计方法3个方面比较了中国环保投资统计和欧盟环保支出统计存在的差异,并评估了各自的环保投资规模与效益.并通过借鉴欧盟环保支出统计经验,得出完善中国环保投资统计工作的启示:明确界定环保投资内涵,逐步与国际概念接轨;规范环保投资统计制度,建立科学的统计方法;与国民经济统计相衔接,满足经济活动管理需求.

  19. Statistical inference

    CERN Document Server

    Rohatgi, Vijay K

    2003-01-01

    Unified treatment of probability and statistics examines and analyzes the relationship between the two fields, exploring inferential issues. Numerous problems, examples, and diagrams--some with solutions--plus clear-cut, highlighted summaries of results. Advanced undergraduate to graduate level. Contents: 1. Introduction. 2. Probability Model. 3. Probability Distributions. 4. Introduction to Statistical Inference. 5. More on Mathematical Expectation. 6. Some Discrete Models. 7. Some Continuous Models. 8. Functions of Random Variables and Random Vectors. 9. Large-Sample Theory. 10. General Meth

  20. Statistical Physics

    CERN Document Server

    Mandl, Franz

    1988-01-01

    The Manchester Physics Series General Editors: D. J. Sandiford; F. Mandl; A. C. Phillips Department of Physics and Astronomy, University of Manchester Properties of Matter B. H. Flowers and E. Mendoza Optics Second Edition F. G. Smith and J. H. Thomson Statistical Physics Second Edition E. Mandl Electromagnetism Second Edition I. S. Grant and W. R. Phillips Statistics R. J. Barlow Solid State Physics Second Edition J. R. Hook and H. E. Hall Quantum Mechanics F. Mandl Particle Physics Second Edition B. R. Martin and G. Shaw The Physics of Stars Second Edition A. C. Phillips Computing for Scient