共查询到20条相似文献,搜索用时 62 毫秒
1.
A bibliometric study of the trend in articles related to eutrophication published in Science Citation Index 总被引:1,自引:0,他引:1
A keyword analysis was applied in this work to evaluate research trends of eutrophication papers published between 1991 and
2010 in any journal of all the subject categories of the Science Citation Index compiled by Institute for Scientific Information,
Philadelphia, USA. Eutrophication was used as a keyword to search parts of titles, abstracts, or keywords. The published output
analysis showed that eutrophication research steadily increased over the past 20 years and the annual publication output in
2008, 2009, 2010 were about four times that of 1991. The whole paper published by China ranked at 3rd, but these papers’ IF
were lower than the average of the world. “Water Framework Directive” and “Life Cycle Assessment” were two of the most frequently
used author keywords in the period between 1999 and 2010 whilst they did not appear before 1998. These new conception indicated
eutrophication research trend was changing to policy and management from technological researches. 相似文献
2.
A keyword analysis was applied in this work to evaluate research trends of DDT (1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane) papers published between 1991 and 2005 in any journal of all the subject categories of the Science Citation
Index compiled by ISI (Institute for Scientific Information, Philadelphia, USA). DDT was used as a keyword to search parts
of titles, abstracts, or keywords. The published output analysis showed that DDT research steadily increased over the past
15 years and the annual publication output in 2005 was about twice that of 1991. The two peaks in 1997 and 2000 were closely
related to two new research fields on DDT, namely the endocrine disruption and the persistent organic pollutants (POPs). A
paper entitled “Persistent DDT metabolite p,p’-DDE is a potent androgen receptor antagonist” published in 1995 in Nature by Kelce et al. firstly discovered DDT’s toxicity for humans. As a result, public concerns regarding DDT ballooned and now
play a key role in DDT research. Keyword analysis indicated that the research interest changed remarkably from 1991 to 2005.
“Endocrine disruption” was one of the most frequently used author keywords in the period between 2002 and 2005 whilst it did
not appear before 1997. The new conception of POPs showed the same trend. The whole paper published by India and Mexico ranked
at 6th and 13th. That showed that DDT research is often related with DDT’s risk and benifits to humans. 相似文献
3.
4.
Michal Jasienski 《Scientometrics》2009,78(2):347-353
The relative occurrence of the words “surprising” and “unexpected” in the titles of scientific papers was 11 times more common
in 2001–2005 than in 1900–1955. However, papers which had titles containing one of these words did not receive enhanced numbers
of citations. Both words (and also adjectives “unusual” and “unfortunately”) are used significantly more frequently in science
than in social sciences and humanities. The distribution of the statements of surprise is not random in scientific literature
(chemistry journals ranked highest in the number of papers claiming “surprising” or “unexpected” results) and may reflect
the level of maturity of a discipline. 相似文献
5.
This paper presents a detailed chronological survey of papers published in the journal titled Water Research which started publication since 1967. This current investigation reviews publication patterns between 1967 and 2008. An analysis
of the research performance according to publication output, distribution of words in article title, author keywords, and
keywords plus. Performances of countries, institutes, and authors, including total, single, collaborative, first author, and
corresponding author publications were analyzed. The most-frequently cited articles each year and the articles of the highest
impact in 2008 were also reported. Results showed that “activated sludge” was the most frequently used author keyword, followed
by “adsorption,” and “drinking water.” Authors from 114 different countries/territories published in the journal, with the
most articles submitted by authors from the USA. 相似文献
6.
7.
The classification of biomedical journals by research level 总被引:3,自引:0,他引:3
A new method of classification of biomedical research journals by research level (RL) into clinical or basic, or somewhere
in between, is described that updates the system developed by CHI Research Inc. nearly 30 years ago. It is based on counting
articles that have one of about 100 “clinical” title words, or one of a similar number of “basic” title words, or both. It
allows over 3000 journals in the Science Citation Index (or other databases) to be classified rapidly and transparently, for changes in their research level with time, and for many
individual papers in “mixed” journals to be categorised as clinical or basic.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
8.
Henry Small 《Scientometrics》2011,87(2):373-388
It is proposed that citation contexts, the text surrounding references in scientific papers, be analyzed in terms of an expanded
notion of sentiment, defined to include attitudes and dispositions toward the cited work. Maps of science at both the specialty
and global levels are used as the basis of this analysis. Citation context samples are taken at these levels and contrasted
for the appearance of cue word sets, analyzed with the aid of methods from corpus linguistics. Sentiments are shown to vary
within a specialty and can be understood in terms of cognitive and social factors. Within-specialty and between-specialty
co-citations are contrasted and in some cases suggest a correlation of sentiment with structural location. For example, the
sentiment of “uncertainty” is important in interdisciplinary co-citation links, while “utility” is more prevalent within the
specialty. Suggestions are made for linking sentiments to technical terms, and for developing sentiment “baselines” for all
of science. 相似文献
9.
The obsolescence and “durability” of scientific literature have been important elements of debate during many years, especially
regarding the proper calculation of bibliometric indicators. The effects of “delayed recognition” on impact indicators have
importance and are of interest not only to bibliometricians but also among research managers and scientists themselves. It
has been suggested that the “Mendel syndrome” is a potential drawback when assessing individual researchers through impact
measures. If publications from particular researchers need more time than “normal” to be properly acknowledged by their colleagues,
the impact of these researchers may be underestimated with common citation windows. In this paper, we answer the question
whether the bibliometric indicators for scientists can be significantly affected by the Mendel syndrome. Applying a methodology
developed previously for the classification of papers according to their durability (Costas et al., J Am Soc Inf Sci Technol
61(8):1564–1581, 2010a; J Am Soc Inf Sci Technol 61(2):329–339, 2010b), the scientific production of 1,064 researchers working at the Spanish Council for Scientific Research (CSIC) in three different
research areas has been analyzed. Cases of potential “Mendel syndrome” are rarely found among researchers and these cases
do not significantly outperform the impact of researchers with a standard pattern of reception in their citations. The analysis
of durability could be included as a parameter for the consideration of the citation windows used in the bibliometric analysis
of individuals. 相似文献
10.
The great importance of titles being highly informative is almost unanimously accepted in literature, assuming that the more
informative titles are, the more effectively they serve their functions. The most common measure of title “informativeness”
has been the number of “significant” (i.e., non-trivial) words included in it, and one of the factors which might be associated
with it is the length of the paper, measured by its number of pages. The present study attempted to test, in a large group
of journals from different areas and over six decades, the hypothesis that a paper with more pages will have more “significant”
words in its title. Large samples of original research papers were drawn from each decade year of twenty-four leading journals
selected from the sciences, the social sciences and the humanities. For each paper, the number of “significant” words in the
title was correlated with the number of pages. Findings indicate a difference between the scientific journals on the one hand,
and the social sciences and humanities journals on the other. A moderate positive correlation was found in most scientific
journals for many periods. In the social sciences journals, and to a greater extent, in the humanities journals, a significant
positive correlation was limited to only a few periods, while the rest showed a very low correlation, or even a negative one.
The different findings for the sciences are perhaps attributable to their unique inherent features.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
11.
Scientometric study of laser patent literature 总被引:3,自引:2,他引:1
An analysis of the patents filed and scientific papers published and abstracted in theJournal of Current Laser Abstracts (JCLA) for the period 1967–95 indicates that innovative activity in laser science and technology was at its peak in the early
70s. However, scientific activity surpassed the innovative activity in the early 80s. There was a continuous shift in emphasis
from “applications of lasers” to “experimental laser research” and to “theoretical laser research”. Further analysis of the
1840 patents field in 1970–71, 1975–76, and 1980–85 indicates that most of the firms filing patents were situated in USA and
thus USA is the leading country filing patents in this area followed by Japan. “Spectroscopy of laser output” followed by
“Communication applications of laser” got the maximum emphasis. 相似文献
12.
A comparative study of research performance in computer science 总被引:4,自引:5,他引:4
The paper compares the research performance in computer science of four major Western countries, India and China, based on
the data abstracted from INSPEC database during the period 1993–2002. A total of 9,632 computer science papers recorded in
INSPEC database were used for the comparison. The findings indicate that, on the one hand, the number of papers produced in
China has considerably increased in the past few years. Particularly, in recent years, China occupies a remarkable high position
in terms of counts of papers indexed by the INSPEC database. On the other hand, Chinese scientists preferred to publish in
domestic journals and proceedings and shares of SCI-papers to the total journal papers for China have still remained the lowest.
This indicates that the research activities of Chinese scientists in computer science are still rather “local” and suffer
from a low international visibility. Various scientometric indicators, such as Normalized Impact Factor, ratio of papers in
high quality journals are further adopted to analyze research performance and diverse finding are obtained. Nevertheless,
for these surrogate indicators, China has optimistically achieved great progress, characterized with “low level of beginning
and high speed of developing”. The policy implication of the findings lies in that China, as well as other less developed
countries in science, can earn relative competitive advantages in some new emerging or younger disciplines such as computer
science by properly using catch-up strategy.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
13.
The name of Vassily Vassilievich Nalimov is connected not only with the development of scientometrics, but also with the development
of several other scientific branches such as metrology of quantitative chemical analysis, chemical cybernetics, mathematical
theory of experiment, philosophy of science, probabilistic theory of meanings among others. All these different scientific
subjects were united on the basis of a probabilistic approach as opposed to a deterministic one.
The paper covers two decades (1961–1981) of Nalimov's life and describes the “cybernetic” period of his activity in the Scientific
Council for Cybernetics in the Presidium of the USSR Academy of Sciences as a chairman of two section — “Chemical Cybernetics”
and “Mathematical Theory of Experiment”
The author was the closest colleague of Nalimov in the Council. The paper touches on the peculiarities of scientific life
of that time in soviet Russia, as well as the difficulties of dealing with an attempt to reorganize the higher education system.
Nalimov paid special attention to this problem. The mathematical theory of experiment and scientometrics, both of which later
became independent scientific branches, came from the section of “Chemical Cybernetics”.
Nalimov was a gifted pedagogue and a brilliant speaker, with an ability to enthrall the audience. Some vivid episodes related
to his talks are presented in the paper.
The informal scientific community, united by ideas and world outlook, was known in our country as “Nalimov's invisible college”.
Such a community could be treated as a pioneer in the history of Russian science.
This revised version was published online in June 2006 with corrections to the Cover Date.
This revised version was published online in June 2006 with corrections to the Cover Date.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
14.
Comparative analysis between impact factor and h-index for pharmacology and psychiatry journals 总被引:1,自引:0,他引:1
Using strictly the same parameters (identical two publication years (2004–2005) and identical one-year citation window (2006)),
IF 2006 was compared with h-index 2006 for two samples of “Pharmacology and Pharmacy” and “Psychiatry” journals computed from
the ISI Web of Science. For the two samples, the IF and the h-index rankings of the journals are very different. The correlation
coefficient between the IF and the h-index is high for Psychiatry but lower for Pharmacology. The linearity test performed
between the h-index and
IF\fracaa + 1 . n \frac1a + 1 \,IF^{{{\frac{\alpha }{\alpha \, + 1}}}} .\,n\,^{{{\frac{1}{\alpha \, + 1}}}} showed the great sensitivity of the model compared with α. The IF and h-index can be completely complementary when evaluating journals of the same scientific discipline. 相似文献
15.
Antonio Bianconi 《Journal of Superconductivity and Novel Magnetism》2011,24(3):1117-1121
The present issue of Journal of Superconductivity and Novel Magnetism collects the papers presented at the International Conference
on “Quantum Phenomena in Complex Matter.” Superstripes 2010 held in Erice, Italy, from July 19 to 25, 2010, at the Ettore
Majorana Foundation and Centre for Scientific Culture. In this preface, I discuss the scientific scenario of the search for
the mechanism of the macroscopic quantum coherent phase at high temperature “superconductivity in complexity.” 相似文献
16.
Multidisciplinarity,interdisciplinarity, and patterns of research collaboration in nanoscience and nanotechnology 总被引:9,自引:11,他引:9
This paper first describes the recent development that scientists and engineers of many disciplines, countries, and institutions
increasingly engage in nanoscale research at breathtaking speed. By co-author analysis of over 600 papers published in “nano
journals” in 2002 and 2003, I investigate if this apparent concurrence is accompanied by new forms and degrees of multi- and
interdisciplinarity as well as of institutional and geographic research collaboration. Based on a new visualization method,
patterns of research collaboration are analyzed and compared with those of classical disciplinary research. I argue that current
nanoscale research reveals no particular patterns and degrees of interdisciplinarity and that its apparent multidisciplinarity
consists of different largely mono-disciplinary fields which are rather unrelated to each other and which hardly share more
than the prefix “nano”.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
17.
M. C. Jones 《TEST》1990,5(2):345-356
Summary Recent papers of Copas (1995), Hjort and Jones (1996) and Loader (1996) have developed closely related methods for “local
likelihood” density estimation. In various places, however, a more “simple-minded” and explicit analogue of local polynomial
fitting in regression has been proposed for density estimation. By introducing the usual kind of binning procedure into Hjor
and Jones' method, it is shown how the more and less sophisticated versions can be reconciled. Also, we attempt to understand
better the role of the attractive subclass of local likelihood methodology proposed by Loader. Finally, we look at a further
subset of methods and make some theoretical comparisons between members of this class. 相似文献
18.
We consider the “Matthew effect” in the citation process which leads to reallocation (or misallocation) of the citations received
by scientific papers within the same journals. The case when such reallocation correlates with a country where an author works
is investigated. Russian papers in chemistry and physics published abroad were examined. We found that in both disciplines
in about 60% of journals Russian papers are cited less than average ones. However, if we consider each discipline as a whole,
citedness of a Russian paper in physics will be on the average level, while chemistry publications receive about 16% citations
less than one may expect from the citedness of the journals where they appear. Moreover, Russian chemistry papers mostly become
undercited in the leading journals of the field. Characteristics of a “Matthew index” indicator and its significance for scientometric
studies are also discussed. 相似文献
19.
Is the United States losing ground in science? A global perspective on the world science system 总被引:1,自引:0,他引:1
Based on the Science Citation Index-Expanded web-version, the USA is still by far the strongest nation in terms of scientific
performance. Its relative decline in percentage share of publications is largely due to the emergence of China and other Asian
nations. In 2006, China has become the second largest nation in terms of the number of publications within this database.
In terms of citations, the competitive advantage of the American “domestic market” is diminished, while the European Union
(EU) is profiting more from the enlargement of the database over time than the USA. However, the USA is still outperforming
all other countries in terms of highly cited papers and citation/publication ratios, and it is more successful than the EU
in coordinating its research efforts in strategic priority areas like nanotechnology. In this field, the People’s Republic
of China (PRC) has become second largest nation in both numbers of papers published and citations behind the USA. 相似文献