**2. Review of literature**

There are so many studies on LIS research trend on the basis of articles published in national and international journals, but it has been found that only few studies have been done on the basis of PhD thesis, which is awarded by Indian universities. Maity and Hatuta's [1] study is an attempt to find out the research trends of library management in LIS and to quantitatively analyze the research activity in India based on doctoral theses that were already awarded in the period 1950–2012. Yadav and Gohain [2] have noted that the trends of LIS education in India under three important phases: genesis of LIS education; LIS education during 1947–2014; and emerging trends in the new millennium in order to cover the important milestones that occurred in Indian LIS education. The literature that informs the study came from a wide range of sources. The paper provides useful current information to LIS professionals, fraternities, researchers, students, and other stakeholders. According to Pandita and Singh [3], this study examines the research growth in the field of LIS at a global level for the period 2004–2013. The key areas analyzed in the study include research growth in LIS at the continental level, world's ten leading LIS research countries, citation analysis Hirsch Index (h-index), etc. The study is supported with empirical findings, for which data were retrieved from the SCI MagoJournal and Country Ranking, based on SCOPUS data source. The study is not exhaustive in nature, as it covers only those articles published in LIS journals indexed with this particular data source. According to Chatha [4], the aim of the study is to analyze the current research trends in LIS through journal articles. The study covers the number of publications, authors per year, cited items, country-wise distribution of articles, state-wise authorships, and current research areas in LIS. According to Dora and Kumar [5], the current study aims to understand the trends in LIS research during 2004–2015 by studying the published literature in Indian LIS journals. Singh [6] in his article study investigates and identifies research trends on LIS on the basis of PhD theses for the past nineteen years at the Department of Library & Information Science (DLIS), Aligarh Muslim University (AMU), India. Mondal and Roy's [7] paper is basically a bibliometric study based on 4993 citations from 53 PhD theses on economics under the University of Burdwan, West Bengal, India.
