{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,8]],"date-time":"2025-10-08T16:18:41Z","timestamp":1759940321599,"version":"3.38.0"},"reference-count":43,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2011,7,29]],"date-time":"2011-07-29T00:00:00Z","timestamp":1311897600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Information Science"],"published-print":{"date-parts":[[2011,10]]},"abstract":"<jats:p> This study evaluates the impact of author self-citations on h index by exploring 583 authors whose works appear in key periodicals in environmental engineering. The findings show that authors\u2019 h values have high correlation with authors\u2019 article number, total cited count, and their rankings. There is also a high correlation with h index values and rankings of h values. The study indicates that self-citations have little impact on the values of h index and the h index rankings, whether or not articles with authors\u2019 self-citation are included. Further investigations reveal that, for authors with high values in h index, the two h index values are both highly correlated and with significant difference either with self-citations or without. A similar pattern is seen in authors with low h values. The results suggest that there is no need to deliberately exclude self-citations in analysing or evaluating research performance in environmental engineering. <\/jats:p>","DOI":"10.1177\/0165551511412027","type":"journal-article","created":{"date-parts":[[2011,7,30]],"date-time":"2011-07-30T02:56:07Z","timestamp":1311994567000},"page":"453-461","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":21,"title":["Probing the effect of author self-citations on <i>h<\/i> index: A case study of environmental engineering"],"prefix":"10.1177","volume":"37","author":[{"given":"Mu-Hsuan","family":"Huang","sequence":"first","affiliation":[{"name":"Department of Library and Information Science, National Taiwan University, Taiwan"}]},{"given":"Wen-Yau Cathy","family":"Lin","sequence":"additional","affiliation":[{"name":"Department of Information and Library Science, Tamkang University, 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