手法を比較

	ORCID研究者識別子	引用分析	引用管理ツール	デジタルオブジェクト識別子システム
分野	研究スキル	研究スキル	研究スキル	研究スキル
系統	Process / pipeline	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	2010 (founding); 2012 (launch)	1955 (citation indexes); 1975 (Impact Factor); 2005 (H-index)	2001 (modern era, EndNoteWeb); 2006 (Mendeley); 2006 (Zotero)	1998 (concept); 2001 (widespread adoption)
提唱者	ORCID Inc., a non-profit founded in 2010 by Liz Haak and others	Eugene Garfield (Citation Indexes, 1955); Jorge Hirsch (H-index, 2005)	Academic researchers and librarians; developed since 1980s	Norman Paskin, CrossRef and International DOI Foundation (1998)
種類	Standard	Tool	Tool	Standard
原典	Haak, L. L., Fenner, M., Paglione, L., Pentz, E., & Ratner, H. (2012). ORCID: A system to uniquely identify researchers. Learn. Publ., 25(4), 259–264.	Hirsch, J. E. (2005). An index to quantify an individual's scientific research output. Proceedings of the National Academy of Sciences, 102(46), 16569–16572.	Booth, A. (2012). Citation management tools. In R. Bosch & K. Winn (Eds.), Reference management and citation software. Library Technology Reports, 48(5), 12–18.	Paskin, N. (2010). Digital Object Identifier (DOI) system. Encyclopedia of Library and Information Sciences, 3rd ed., 1586–1592. ISBN: 978-0-8493-9712-7
別名	ORCID, researcher identifier, ORCID iD	citation metrics, bibliometric analysis, citation tracking	reference manager, citation software, bibliographic management	DOI, Digital Object Identifier, persistent identifier
関連	4	4	3	4
概要	ORCID (Open Researcher and Contributor ID) is a free, unique, persistent 16-digit identifier assigned to researchers that distinguishes them from others with the same or similar names. Launched in 2012 by ORCID Inc., a non-profit organization, the ORCID system addresses a critical problem in scholarly communication: name ambiguity. Millions of researchers worldwide share names (e.g., 'Smith, J.'). Without a unique identifier, citations and publications are difficult to attribute correctly, author H-indices are miscalculated, and researchers are credit for work they did not do. An ORCID iD is free, permanent, and owned by the researcher; it persists regardless of affiliation changes or career transitions.	Citation analysis is the systematic study of how scholarly works are cited by subsequent research, used as a proxy for research impact and influence. Founded formally by Eugene Garfield in 1955 (introducing citation indexes), the field encompasses metrics ranging from simple citation counts to sophisticated indices like the H-index (Hirsch, 2005) and field-normalized indicators. Citation analysis is used to evaluate researcher productivity, track influence of ideas, assess journal quality, and detect research trends. While citation counts are not perfect measures of quality (high citation does not equal high quality; time lag in citation accumulation), they provide valuable quantitative data for research evaluation alongside peer review and expert assessment.	Citation management tools are software applications that store, organize, and format bibliographic references. They allow researchers to import citations from databases and websites, annotate and tag articles, organize references by project, and automatically generate formatted in-text citations and bibliographies in multiple styles (APA, Vancouver, Chicago, Harvard). Popular tools include Zotero (free, open-source), Mendeley (Elsevier-owned, freemium), EndNote (commercial, Clarivate), and others. These tools are essential for managing the hundreds to thousands of references accumulate during a research career and for ensuring consistent, accurate citation formatting in academic writing.	A Digital Object Identifier (DOI) is a unique, persistent alphanumeric code that identifies a scholarly work (journal article, book chapter, dataset, preprint) and persists even if the URL changes. Introduced in 1998 by Norman Paskin and the International DOI Foundation, DOIs are now standard in academic publishing. They consist of a prefix (assigned to a publisher or organization) and a suffix (assigned to an individual work), formatted as 10.XXXX/XXXXX (e.g., 10.1371/journal.pmed.1000097). DOIs are registered with international agencies (CrossRef, DataCite, mEDRA) and resolve through the centralized resolver https://doi.org/, ensuring that a DOI will direct users to the correct article regardless of whether the publisher's website changes location.