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2021-08-13 07:57:13 | onclick: | My understanding of scientific citation

Originally, doing scientific research, especially basic or applied basic research, and publishing the results through public academic journals is a simple and pure thing. Every academic paper published always has a sense of achievement. As Dr. D. Kennedy, former editor in chief of the American Journal of science, said: all our thinking, analysis, experiments and data collection work is nothing before writing papers; In the academic field, our achievements are reflected in what we write (publish). Publications, like hard currency, are the basic manifestation of academic achievements.

Now a Science Citation Index (SCI) has been published, which has confused people's thoughts (especially young people). For example, it is often seen that when our researchers and graduate students talk about publishing papers, the most common thing they hear is "what is the impact factor (if) of the publication publishing papers?"“ Whose paper has been cited many times? ", The most ridiculous thing is that when introducing the results, "what is the goal of publishing papers? Points - refers to "if". Some organizations only divide the publications into the so-called first and second districts according to the size of if, and reward them accordingly. Some simply believe that if is high, the journal level is high. The more times a paper is cited, the higher the level is. This actually goes against the original intention of Dr. Garfield, the father of scientific Bibliometrics (establishing a link between the author group and the reader group to promote scientific development). In order to meet the needs of scientific research and evaluation (individuals and institutions), SCI has developed many functional databases, some of which are of great guiding significance and help to scientific research (such as discipline analysis, research direction analysis, hot spot analysis, peer analysis, etc.), but these functions have been ignored by some researchers. However, if you simply take if and the number of citations of papers as the main basis for scientific evaluation, you may sometimes fall into a misunderstanding (Professor Rao Yi is right. In that case, please ask a junior high school student to count points). It is reported that at present, the most cited paper seems to be a paper published in 1951 in the direction of Bioscience, which has been cited as many as 270000 times. The achievement of this paper has not attracted the attention of the Nobel Prize Committee.

The calculation of if is actually very simple, that is, the ratio (frequency divided by the number of papers) of all papers published in a journal by all SCI journals in the next two years (of course, only some journals of relevant majors cite). Therefore, for the if value of a journal, it depends on two factors: citation frequency and the number of papers published in a year. Taking the data of 2010 as an example, we compared several journals in the field of life sciences: the if of cell was 32.401 and 319 papers were published annually; The if of cell res. published in China is 9.417, and 96 papers are published annually; the if of Nature Cell Biol. Is 19.407, and 130 papers are published annually; If of nature is 36.101, and 862 papers were published in; The if of science is 31.364 and 862 papers are published annually. The if of the American Journal of Geophysical Research (jgr, recognized as the first in this discipline) of my geophysical discipline is 3.303, and the annual number of papers is 2995. The citation of a single paper is more complex. For simplicity, we put aside the quality of the paper and focus on other factors. Taking geoscience as an example (as is generally the case in other disciplines), the first is the disciplinary factor (also known as academic circle): highly cited papers in the field of geoscience mainly appear in (climate change) environment and rock geochemistry. In one year, the authors of high citation of Geosciences in China were almost all rock geochemistry. The second is the research hotspot, which refers to the research direction, such as isotopic chronology, global climate change, etc; Hot research areas (such as Qinghai Tibet and North China, etc.).

In the citations of my published academic papers, there are generally several situations: first, the classical literature accounts for a small part; Most of the research results of this paper are traced to literature; Most of the documents in these two parts are located in the preface (by comparing the previous achievements, the starting point of this paper is clarified). Only a small part of the literature is located in the "discussion" of the most important part of the paper. Peer review also pays most attention to this part. In other words, most of the citations in my paper only play a "historical" role (the historical significance of these documents is greater than the practical significance). What really sets off my thesis (and also shows the significance of the results) is the small part of the citation. Obviously, the larger the academic circle, the more active and the more researchers, the more such tracking literature and the more citations of papers. If the academic circle is small, the frequency of citation of natural papers is low. But who dares to say that research in a small academic circle is not important? History has proved that many current active academic research fields have also grown slowly since childhood. I need to warn young people not to be too utilitarian in doing scientific research and publishing academic papers, otherwise it will be difficult to become an atmosphere.

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