Digital Tools for Literature Search

Concept

ICT stands for information and communication technology: the computers, networks, software and media used to create, store, retrieve and share information. In research, ICT lets a scholar locate literature, collect and analyse data, manage references and publish. A search engine crawls and indexes the open web (Google, Bing), whereas a database contains curated, indexed records (Scopus, PubMed), so a database search is usually more precise for scholarly work. Boolean logic, named after George Boole, combines terms: AND narrows, OR broadens, NOT excludes. Truncation (educat*) retrieves word endings, quotation marks fix an exact phrase, and filters limit by date, language, subject or document type. In Google, a minus sign excludes a word and operators such as site: and filetype: restrict the search.

Concept

Google Scholar (launched 2004) is a free search engine for scholarly articles, books, theses and patents; its “Cited by” link lets you follow later work, and it offers alerts, a personal library and author profiles with h-index and i10-index. It is broad but not curated, so quality control is the user’s job. Semantic Scholar (Allen Institute for AI) uses AI to rank and summarise papers. BASE (Bielefeld) and CORE aggregate open-access content. Dimensions and OpenAlex provide open or freemium bibliographic data, and visual tools such as Connected Papers and ResearchRabbit map citation networks. Microsoft Academic was shut down in 2021. Scopus and Web of Science provide curated citation tracking by subscription.

Concept

The INFLIBNET Centre at Gandhinagar, an inter-university centre of the UGC, runs most national scholarly infrastructure. Shodhganga hosts doctoral theses; Shodhgangotri hosts synopses; Vidwan is the database of experts; IRINS is the Indian Research Information Network System for institutional research profiles; and ShodhShuddhi provides plagiarism-detection access to institutions. E-resource consortia included the UGC-INFONET Digital Library Consortium (universities), N-LIST (colleges) and INDEST-AICTE (technical institutions), later brought together as e-ShodhSindhu. The National Digital Library of India (NDLI), run from IIT Kharagpur under the Ministry of Education, is a single-window learning repository, and e-PG Pathshala offers postgraduate content. From 2025 the One Nation One Subscription (ONOS) scheme aims to give government-funded institutions access to thousands of international journals through a single national arrangement.

Concept

Open access (OA) means free online access to scholarly work with permission to reuse under open licences such as Creative Commons. The gold route publishes in an OA journal, often funded by an article processing charge; the green route deposits a version in a repository, sometimes after an embargo; hybrid journals make selected articles OA in a subscription journal; diamond or platinum OA charges neither author nor reader. The movement rests on the Budapest (2002), Bethesda and Berlin (2003) declarations. The DOAJ lists vetted OA journals, OpenDOAR lists repositories, and SHERPA/RoMEO records publishers’ self-archiving policies. Preprints are manuscripts shared before peer review on servers such as arXiv (1991, Paul Ginsparg), bioRxiv, medRxiv, SSRN and ChemRxiv. Plan S (cOAlition S, 2018) requires publicly funded research to be published in OA form.

Concept

Current awareness services keep researchers informed of new publications without repeated searching. Table-of-contents (TOC) alerts email the contents of new journal issues, saved-search alerts notify when new results match a query, citation alerts tell you when your paper is cited, and RSS feeds deliver headlines to a reader. A library-based version is Selective Dissemination of Information (SDI), which matches new documents to a user’s interest profile. Google Scholar, Scopus, PubMed and publishers’ sites all offer alerts.