Page 248 - JOURNAL OF LIBRARY SCIENCE IN CHINA 2015 Vol. 41

Extended English abstracts of articles published in the Chinese Edition of Journal of Library Science in China 2015 Vol.41 247

the value of library and information resources is highly appreciated; the endless possibilities of
the Information and Library Science are actively explored, and the basic theoretical studies follow
the beaten track. The third result is that future studies will focus on the four aspects, which are the
basic theory, technology integration, digital technology and social integration.
The paper is of a unique perspective that reflects and presents the whole picture of Library
and Information Science research in Taiwan by theses and dissertations. This is because doctoral
students and postgraduate students play a leading role in academic research activities, and their
dissertations can be regarded as an important medium for understanding the development of a
discipline, thus the situation of Library and Information Science research can be reflected more
directly. In addition, the content analysis criteria for classification of theses and dissertations
proposed by this paper is compiled after adjusting and testing according to the actual samples,
taking the classification table of the field and academic expertise of Library and Information
Science research in Taiwan as a reference. It is fit not only for the regional characteristics but also
the actual situation. The subject classification code table brought by this paper can present the
coupling relationship among the subjects of Library and Information Science research in Taiwan
area and provide an accurate and reliable reference for researchers to study the issue further.

Mapping knowledge domains analysis of research topics of doctoral
dissertations on Library Science in Europe and the United States
1 ∗
Guoli YANG , Jing LIU, Manrong WANG & Zhangping LU

Europe and the United States are considered to be the leaders in the field of Library Science research.
Their doctoral dissertations have an irreplaceable role for studying and tracking the development
of Library Science. In this study, 3 973 doctoral dissertations in the database of PQDD from year
1925 to 2013 are used as the research object. Keywords co-occurrence analysis and expansion
word detection methods embedded in CiteSpace are used to generate knowledge map on the theme
of the research topic. Knowledge map is used to obtain the clues of the theme and to analyze the
content in-depth in order to reveal the research focus, frontiers and their evolution in a period of 89
years.
Six features of research themes are displayed. 1) History inspection in specific libraries has been
concentrated in the studies of all kinds of libraries, especially in the studies of public libraries
and academic libraries. Compared with public library researches, the academic library pays more
attention to the strategic development and at the same time to the detailed problems specific to this
kind of libraries. 2) Research innovations in information retrieval and information behavior are
significant in the interdisciplinary research and the main research bodies are computer technology,

* Correspondence should be addressed to Guoli YANG, Email: yanggl@ujs.edu.cn, ORCID: 0000-0003-2763-4161