在学术期刊的计量评价指标体系中,影响因子和总被引频次是2项最为重要的指标,占据了较高的权重;但是,期刊办刊历史长短、发表论文多少、出版周期长短、学科人群多少等都会影响总被引频次的大小。尤其是一些发表大量低水平论文的期刊,依...在学术期刊的计量评价指标体系中,影响因子和总被引频次是2项最为重要的指标,占据了较高的权重;但是,期刊办刊历史长短、发表论文多少、出版周期长短、学科人群多少等都会影响总被引频次的大小。尤其是一些发表大量低水平论文的期刊,依靠论文数量众多,依然可以获得较高的总被引频次;但其影响因子却很低,论文质量很差。如何客观甄别这类论文数量巨大而质量效益不高的期刊?本文提出一个全新的衡量期刊量效关系的指标——期刊量效指数(journal mass index,JMI)。"量"指期刊的发文量,"效"则引入期刊影响因子。JMI定义为某刊影响因子与该刊影响因子对应的发文量的比值,意义是平均每篇文献对该刊影响因子的贡献值。JMI能客观反映同一个学科中量大质低的期刊的"臃肿程度"。在《中国学术期刊影响因子年报(2016版)》中,JMI被应用于修正期刊影响力指数(CI)排序,使CI排序更准确地反映学术期刊的学科影响力排名。实践证明,JMI是一个对学术期刊量效关系进行客观评判的有用的计量指标。展开更多
AIM:To discuss the variations and distributions of authors who published their papers in World Journal of Gastroenterology (WJG) during 2001-2007 and evaluate the development of WJG and gastroenterology core journals ...AIM:To discuss the variations and distributions of authors who published their papers in World Journal of Gastroenterology (WJG) during 2001-2007 and evaluate the development of WJG and gastroenterology core journals in recent years by comparing the contributions of the authors. METHODS: WJG articles published in 2001-2007 were searched from MEDLINE database (by ISI Web of Knowledge). The variations (cooperation degree, cooperation rate) and distributions of the first authors were analyzed with bibliometric methods. SCIE was used to collect articles published in Am J Gastroenterol, Gastroenterology, Scand J Gastroenterol and WJG in 2007, and comparison of the data was made. Comparison indicators included the article number of annual journals, cooperation degree of authors, cooperation rate, mean number of articles published in each WJG issue, number of countries of the first WJG authors, geographical distribution and article contribution ratio of all WJG authors and domestic authors. RESULTS: Of the 5851 articles covered in MEDLINE, 173, 236, 633, 826, 1496, 1382 and 1105 articles were cited from 2001 to 2007. The cooperation degree was 5.11, 5.56, 5.75, 5.76, 6.31, 5.90 and 5.64 respectively. The cooperation rates was 94.80%, 99.15%, 98.89%, 98.55%, 99.13%, 96.67% and 95.66%, respectively. The mean number of articles published in each WJG issue from 2001 to 2007 was 28, 39, 52, 34, 31, 28 and 23, respectively. The number of countries of the first WJG authors was 8, 8, 27, 32, 49, 61 and 56, respectively. The first authors of WJG came from 3 continents in 2001 and covered 6 continents in 2006-2007. The number of articles written by Asian authors was 136 (79.07%), 227 (96.19%), 575 (90.98%), 713 (87.81%), 1111 (75.32%),712 (53.98%) and 555 (53.21%), respectively in 2001-2007. The number of articles written by European & American authors increased from 36 (20.93%) and 8 (3.39%) in 2001-2002 to 563 (42.68%) and 452(43.34%) in 2006-2007. The number of countries except for China contributing papers was increased. The number of articles written by first authors of Japan rose from 0 (0%) in 2001-2002 to 287 (12.15%) in 2006-2007. The number of articles written by American authors increased from 6 (1.47%) in 2001-2002 to 158 (6.69%) in 2006-2007. The number of articles written by Chinese authors was 136 (79.07%), 227 (96.19%), 548 (86.71%), 669 (82.39%), 884 (59.93%), 380 (28.81%) and 320 (30.68%), respectively, in 2001 to 2007. The number of articles published in Am J Gastroenterol, Gastroenterology, Scand J Gastroenterol and WJG was 565, 586, 238 and 1118, respectively in 2007. The cooperation degree was 4.77, 6.14, 5.95 and 5.64, respectively, in 2007. The cooperation rate was 95.40%, 84.18%, 96.63% and 95.66%, respectively, in 2007. The number of countries of authors contributing papers was 44, 35, 42 and 62, respectively, in 2007. CONCLUSION:The geographical distribution of WJG authors is wide for the past 2 years. WJG has made a step onto international publishing, and drawn even more attentions from gastroenterology researchers. Its authors are distributed over 74 countries in 6 global continents, and the journal has become the main intermediary for international gastroenterology researchers to demonstrate their research accomplishments.展开更多
Original Research, Clinical Trials, Reviews, Comments, and Case Reports in esophageal cancer, gastric cancer, colon cancer, liver cancer, viral liver diseases, etc., from all over the world are welcome on the conditio...Original Research, Clinical Trials, Reviews, Comments, and Case Reports in esophageal cancer, gastric cancer, colon cancer, liver cancer, viral liver diseases, etc., from all over the world are welcome on the condition that they have not been published previously and have not been submitted simultaneously elsewhere.展开更多
Dear Professor Lian-Sheng Ma, Professor Michael Hobsley and I have greatly enjoyed reading the account of all you have done towards the development of ＂The World Journal of Gastroenterology＂, as described in the art...Dear Professor Lian-Sheng Ma, Professor Michael Hobsley and I have greatly enjoyed reading the account of all you have done towards the development of ＂The World Journal of Gastroenterology＂, as described in the article by Zhen-Xi Li in the November 21st. issue of the Journal. It is an amazing achievement! Yours is the only international gastroenterological iournal to come out weekly! The standard of the articles is extremely high and the Journal is equal in size to ＂Gut＂ （Leaderette： 2005 Impact Factor-Gastroenterology ＆ Hepatology list：1 GASTROENTEROLOGY 12.386; 2 HEPATOLOGY 9.792; GUT 7.692）, which comes out only monthly. You have achieved all this in a matter of only 10 years-truly a wonderful achievement. We do congratulate you.展开更多
Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Gastroenterology. The editors and authors of the articles submitted to the jour...Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Gastroenterology. The editors and authors of the articles submitted to the journal are grateful to the following reviewers for evaluating the articles (including those published in this issue and those rejected for this issue) during the last editing time period.展开更多
Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Gastroenterology,
An informative, structured abstract of no more than 250 words should accompany each manuscript. Abstracts for original contributions should be structured into the following sections： AIM： Only the purpose should be ...An informative, structured abstract of no more than 250 words should accompany each manuscript. Abstracts for original contributions should be structured into the following sections： AIM： Only the purpose should be included. METHODS： The materials, techniques, instruments and equipments, and the experimental procedures should be included. RESULTS： The observatory and experimental results, including data, effects, outcome, etc. should be included. Authors should present P value where necessary, and the significant data should accompany. CONCLUSION： Accurate view and the value of the results should be included. The format of structured abstracts is at： http：//www.wjgnet.com/wjg/help/11 .doc展开更多
Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Gastroenterology. The editors and authors of the articles submitted to the jour...Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Gastroenterology. The editors and authors of the articles submitted to the journal are grateful to the following reviewers for evaluating the articles (including those published in this issue and those rejected for this issue) during the last editing time period.展开更多
Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World fournal of Gastroenterology.
Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Gastroenterology. The editors and authors of the articles submitted to the jour...Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Gastroenterology. The editors and authors of the articles submitted to the journal are grateful to the following reviewers for evaluating the articles (including those published in this issue and those rejected for this issue) during the last editing time period.展开更多
文摘在学术期刊的计量评价指标体系中,影响因子和总被引频次是2项最为重要的指标,占据了较高的权重;但是,期刊办刊历史长短、发表论文多少、出版周期长短、学科人群多少等都会影响总被引频次的大小。尤其是一些发表大量低水平论文的期刊,依靠论文数量众多,依然可以获得较高的总被引频次;但其影响因子却很低,论文质量很差。如何客观甄别这类论文数量巨大而质量效益不高的期刊?本文提出一个全新的衡量期刊量效关系的指标——期刊量效指数(journal mass index,JMI)。"量"指期刊的发文量,"效"则引入期刊影响因子。JMI定义为某刊影响因子与该刊影响因子对应的发文量的比值,意义是平均每篇文献对该刊影响因子的贡献值。JMI能客观反映同一个学科中量大质低的期刊的"臃肿程度"。在《中国学术期刊影响因子年报(2016版)》中,JMI被应用于修正期刊影响力指数(CI)排序,使CI排序更准确地反映学术期刊的学科影响力排名。实践证明,JMI是一个对学术期刊量效关系进行客观评判的有用的计量指标。
基金The Education Department of Liaoning Province, No. 05W238
文摘AIM:To discuss the variations and distributions of authors who published their papers in World Journal of Gastroenterology (WJG) during 2001-2007 and evaluate the development of WJG and gastroenterology core journals in recent years by comparing the contributions of the authors. METHODS: WJG articles published in 2001-2007 were searched from MEDLINE database (by ISI Web of Knowledge). The variations (cooperation degree, cooperation rate) and distributions of the first authors were analyzed with bibliometric methods. SCIE was used to collect articles published in Am J Gastroenterol, Gastroenterology, Scand J Gastroenterol and WJG in 2007, and comparison of the data was made. Comparison indicators included the article number of annual journals, cooperation degree of authors, cooperation rate, mean number of articles published in each WJG issue, number of countries of the first WJG authors, geographical distribution and article contribution ratio of all WJG authors and domestic authors. RESULTS: Of the 5851 articles covered in MEDLINE, 173, 236, 633, 826, 1496, 1382 and 1105 articles were cited from 2001 to 2007. The cooperation degree was 5.11, 5.56, 5.75, 5.76, 6.31, 5.90 and 5.64 respectively. The cooperation rates was 94.80%, 99.15%, 98.89%, 98.55%, 99.13%, 96.67% and 95.66%, respectively. The mean number of articles published in each WJG issue from 2001 to 2007 was 28, 39, 52, 34, 31, 28 and 23, respectively. The number of countries of the first WJG authors was 8, 8, 27, 32, 49, 61 and 56, respectively. The first authors of WJG came from 3 continents in 2001 and covered 6 continents in 2006-2007. The number of articles written by Asian authors was 136 (79.07%), 227 (96.19%), 575 (90.98%), 713 (87.81%), 1111 (75.32%),712 (53.98%) and 555 (53.21%), respectively in 2001-2007. The number of articles written by European & American authors increased from 36 (20.93%) and 8 (3.39%) in 2001-2002 to 563 (42.68%) and 452(43.34%) in 2006-2007. The number of countries except for China contributing papers was increased. The number of articles written by first authors of Japan rose from 0 (0%) in 2001-2002 to 287 (12.15%) in 2006-2007. The number of articles written by American authors increased from 6 (1.47%) in 2001-2002 to 158 (6.69%) in 2006-2007. The number of articles written by Chinese authors was 136 (79.07%), 227 (96.19%), 548 (86.71%), 669 (82.39%), 884 (59.93%), 380 (28.81%) and 320 (30.68%), respectively, in 2001 to 2007. The number of articles published in Am J Gastroenterol, Gastroenterology, Scand J Gastroenterol and WJG was 565, 586, 238 and 1118, respectively in 2007. The cooperation degree was 4.77, 6.14, 5.95 and 5.64, respectively, in 2007. The cooperation rate was 95.40%, 84.18%, 96.63% and 95.66%, respectively, in 2007. The number of countries of authors contributing papers was 44, 35, 42 and 62, respectively, in 2007. CONCLUSION:The geographical distribution of WJG authors is wide for the past 2 years. WJG has made a step onto international publishing, and drawn even more attentions from gastroenterology researchers. Its authors are distributed over 74 countries in 6 global continents, and the journal has become the main intermediary for international gastroenterology researchers to demonstrate their research accomplishments.
文摘Original Research, Clinical Trials, Reviews, Comments, and Case Reports in esophageal cancer, gastric cancer, colon cancer, liver cancer, viral liver diseases, etc., from all over the world are welcome on the condition that they have not been published previously and have not been submitted simultaneously elsewhere.
文摘Dear Professor Lian-Sheng Ma, Professor Michael Hobsley and I have greatly enjoyed reading the account of all you have done towards the development of ＂The World Journal of Gastroenterology＂, as described in the article by Zhen-Xi Li in the November 21st. issue of the Journal. It is an amazing achievement! Yours is the only international gastroenterological iournal to come out weekly! The standard of the articles is extremely high and the Journal is equal in size to ＂Gut＂ （Leaderette： 2005 Impact Factor-Gastroenterology ＆ Hepatology list：1 GASTROENTEROLOGY 12.386; 2 HEPATOLOGY 9.792; GUT 7.692）, which comes out only monthly. You have achieved all this in a matter of only 10 years-truly a wonderful achievement. We do congratulate you.
文摘Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Gastroenterology. The editors and authors of the articles submitted to the journal are grateful to the following reviewers for evaluating the articles (including those published in this issue and those rejected for this issue) during the last editing time period.
文摘Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Gastroenterology,
文摘An informative, structured abstract of no more than 250 words should accompany each manuscript. Abstracts for original contributions should be structured into the following sections： AIM： Only the purpose should be included. METHODS： The materials, techniques, instruments and equipments, and the experimental procedures should be included. RESULTS： The observatory and experimental results, including data, effects, outcome, etc. should be included. Authors should present P value where necessary, and the significant data should accompany. CONCLUSION： Accurate view and the value of the results should be included. The format of structured abstracts is at： http：//www.wjgnet.com/wjg/help/11 .doc
文摘Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Gastroenterology. The editors and authors of the articles submitted to the journal are grateful to the following reviewers for evaluating the articles (including those published in this issue and those rejected for this issue) during the last editing time period.
文摘Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World fournal of Gastroenterology.
文摘Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Gastroenterology. The editors and authors of the articles submitted to the journal are grateful to the following reviewers for evaluating the articles (including those published in this issue and those rejected for this issue) during the last editing time period.
