380 research outputs found
Knowledge-sourcing strategies for cross-disciplinarity in bionanotechnology
interdisciplinarity, collaboration, bionanotechnology, research, knowledge-sourcing, molecular motors
The Structure and Dynamics of Co-Citation Clusters: A Multiple-Perspective Co-Citation Analysis
A multiple-perspective co-citation analysis method is introduced for
characterizing and interpreting the structure and dynamics of co-citation
clusters. The method facilitates analytic and sense making tasks by integrating
network visualization, spectral clustering, automatic cluster labeling, and
text summarization. Co-citation networks are decomposed into co-citation
clusters. The interpretation of these clusters is augmented by automatic
cluster labeling and summarization. The method focuses on the interrelations
between a co-citation cluster's members and their citers. The generic method is
applied to a three-part analysis of the field of Information Science as defined
by 12 journals published between 1996 and 2008: 1) a comparative author
co-citation analysis (ACA), 2) a progressive ACA of a time series of
co-citation networks, and 3) a progressive document co-citation analysis (DCA).
Results show that the multiple-perspective method increases the
interpretability and accountability of both ACA and DCA networks.Comment: 33 pages, 11 figures, 10 tables. To appear in the Journal of the
American Society for Information Science and Technolog
Obtención de documentos de investigación sobre la competitividad de las pequeñas y medianas empresas: un enfoque basado en las redes de autores
This study aims to present a scientometric analysis, based on author’s network maps, to determine the most influential and relevant authors with papers published about the subject Small- and medium-sized enterprises, competitiveness and its measurement, including the use of key performance indicators. Academic research relies on the prospection to retrieve the most relevant research studies and establishing links to authors from key international research groups. To facilitate this study, we used the Scopus and Web of Science databases research results, due to the significant number of indexed scientific articles. The extracted data were compiled and analysed through author’s networks using the statistical software Sci2 Tool, which supports temporal, geospatial, topical, and networks analysis. This study also attempts to point out the research trends and gaps in this area. Results obtained are illustrated by maps of author’s networks that reveal the main authors and research subject groups, thereby enhancing access to information from a scientific approach.Este estudio tiene como objetivo presentar un análisis cientométrico, basado en mapas de redes de autores, para determinar los autores más influyentes y relevantes con trabajos publicados sobre el tema Pequeñas y medianas empresas, la competitividad y su medición, incluido el uso de indicadores clave de rendimiento. La investigación académica se basa en la prospección para recuperar los estudios de investigación más relevantes y establecer vínculos con autores de grupos de investigación internacionales clave. Para facilitar este estudio, utilizamos los resultados de la investigación de las bases de datos Scopus y Web of Science, debido a su número significativo de artículos científicos indexados. Los datos extraídos fueron compilados y analizados a través de redes de autores utilizando el software estadístico Sci2 Tool, que es compatible con el análisis temporal, geoespacial, tópico y de redes. Este estudio también intenta señalar las tendencias de investigación y las brechas en esta área. Los resultados obtenidos se ilustran mediante mapas de redes de autores, que revelan los principales autores y grupos de temas de investigación, mejorando así el acceso a la información de una manera científica
Mapping the structure of science through clustering in citation networks : granularity, labeling and visualization
The science system is large, and millions of research publications are published each year.
Within the field of scientometrics, the features and characteristics of this system are studied
using quantitative methods. Research publications constitute a rich source of information
about the science system and a means to model and study science on a large scale. The
classification of research publications into fields is essential to answer many questions about
the features and characteristics of the science system.
Comprehensive, hierarchical, and detailed classifications of large sets of research publications
are not easy to obtain. A solution for this problem is to use network-based approaches to
cluster research publications based on their citation relations. Clustering approaches have
been applied to large sets of publications at the level of individual articles (in contrast to the
journal level) for about a decade. Such approaches are addressed in this thesis. I call the
resulting classifications “algorithmically constructed, publications-level classifications of
research publications” (ACPLCs).
The aim of the thesis is to improve interpretability and utility of ACPLCs. I focus on some
issues that hitherto have not received much attention in the previous literature: (1) Conceptual
framework. Such a framework is elaborated throughout the thesis. Using the social science
citation theory, I argue that citations contextualize and position publications in the science
system. Citations may therefore be used to identify research fields, defined as focus areas of
research at various granularity levels. (2) Granularity levels corresponding to conceptual
framework. In Articles I and II, a method is proposed on how to adjust the granularity of
ACPLCs in order to obtain clusters corresponding to research fields at two granularity levels:
topics and specialties. (3) Cluster labeling. Article III addresses labeling of clusters at
different semantic levels, from broad and large to narrow and small, and compares the use of
data from various bibliographic fields and different term weighting approaches. (4)
Visualization. The methods resulting from Articles I-III are applied in Article IV to obtain a
classification of about 19 million biomedical articles. I propose a visualization methodology
that provides overview of the classification, using clusters at coarse levels, as well as the
possibility to zoom into details, using clusters at a granular level.
In conclusion, I have improved interpretability and utility of ACPLCs by providing a
conceptual framework, adjusting granularity of clusters, labeling clusters and, finally, by
visualizing an ACPLC in a way that provides both overview and detail. I have demonstrated
how these methods can be applied to obtain ACPLCs that are useful to, for example, identify
and explore focus areas of research
Study on open science: The general state of the play in Open Science principles and practices at European life sciences institutes
Nowadays, open science is a hot topic on all levels and also is one of the priorities of the European Research Area. Components that are commonly associated with open science are open access, open data, open methodology, open source, open peer review, open science policies and citizen science. Open science may a great potential to connect and influence the practices of researchers, funding institutions and the public. In this paper, we evaluate the level of openness based on public surveys at four European life sciences institute
Theories of Informetrics and Scholarly Communication
Scientometrics have become an essential element in the practice and evaluation of science and research, including both the evaluation of individuals and national assessment exercises. Yet, researchers and practitioners in this field have lacked clear theories to guide their work. As early as 1981, then doctoral student Blaise Cronin published "The need for a theory of citing" —a call to arms for the fledgling scientometric community to produce foundational theories upon which the work of the field could be based. More than three decades later, the time has come to reach out the field again and ask how they have responded to this call.
This book compiles the foundational theories that guide informetrics and scholarly communication research. It is a much needed compilation by leading scholars in the field that gathers together the theories that guide our understanding of authorship, citing, and impact
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