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<article xmlns:xlink="http://www.w3.org/1999/xlink">
  <front>
    <journal-meta />
    <article-meta>
      <title-group>
        <article-title>Evolution of advanced technology studies: searching for a communication core</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Konstantin Fursov</string-name>
          <email>ksfursov@hse.ru</email>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Alina Kadyrova</string-name>
          <email>akadyrova@hse.ru</email>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Associate Professor, Institute for Statistical Studies and Economics of Knowledge, National Research University Higher School of Economics</institution>
          ,
          <addr-line>Moscow</addr-line>
          ,
          <country country="RU">Russia</country>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Research Assistant, Institute for Statistical Studies and Economics of Knowledge, National Research University Higher School of Economics</institution>
          ,
          <addr-line>Moscow</addr-line>
          ,
          <country country="RU">Russia</country>
        </aff>
      </contrib-group>
      <abstract>
        <p>The term of advanced technology is primarily associated with computer electronics and microelectronics actively developing since 1960s. Although there is no single conventional definition of the notion or specific class of technology that is associated with it, discussions on what may be considered as technical advancements in the current perspective evolve over time. As long as there is continuous interest in rise, development and dissemination of new technologies, especially from the policy-making perspective, it is important to understand which specific issues arise in professional discourse over certain time periods. This paper focuses on evolution of a communication core in academic discussions on advanced technologies identified with the use of betweenness centrality and PageRank metrics applied to a co-citation network of publications from 1960 until 2015. It is shown that there is observable penetration of the term from social sciences to natural and engineering disciplines.</p>
      </abstract>
      <kwd-group>
        <kwd>Advanced technology</kwd>
        <kwd>technology evolution</kwd>
        <kwd>graph analysis</kwd>
        <kwd>bibliometric analysis</kwd>
        <kwd>co-citation</kwd>
        <kwd>betweenness centrality</kwd>
        <kwd>page rank</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>Introduction</title>
      <p>
        Since 1960-s, there is growing interest in the development and use of new technologies
accompanied by a strong trend on behalf of decision makers to regulate related
processes at institutional and national levels. As a result, a series of efforts were put to
establish relevant classification categories and statistical frameworks, allowing
standardised measurement of science and technology in terms of inputs and outputs
        <xref ref-type="bibr" rid="ref19">(Gokhberg et al., 2013)</xref>
        .
      </p>
      <p>
        One of the key categories, which emerged together with a set of definitions and
distinction criteria for R&amp;D, was a notion of advanced technology. Perhaps, first papers
using the concept appeared in early 1960s in relation to a problem of growing need for
sufficient training of technical specialists
        <xref ref-type="bibr" rid="ref38">(e.g. see Venables, 1962)</xref>
        . Almost 30 years
later the definition of advanced technology appears in the Frascati Manual in relation
to manufacturing
        <xref ref-type="bibr" rid="ref27">(OECD, 1994)</xref>
        . However, the definition vanishes from the later
editions of the Manual as well as from other OECD manuals; it remains one of the key
categories used in professional literature until present (see Fig. 1).
      </p>
      <p>In our study, we suggest looking precisely at the identification and analysis of the
communication core of those academic discussions that set up agenda for further
research in advanced technology.
2</p>
    </sec>
    <sec id="sec-2">
      <title>Literature review</title>
      <p>
        A variety of methods have been developed to detect and analyse social and disciplinary
structures of knowledge as well as dynamics of scientific networks. In offering their
approaches authors suggested focusing on exploring the current ‘knowledge base’ of
certain fields
        <xref ref-type="bibr" rid="ref13 ref14 ref15">(Fagerberg &amp; Verspagen, 2009; Fagerberg et al., 2012a, 2012b)</xref>
        or
revisiting and conceptualising information on the current use of selected concepts
        <xref ref-type="bibr" rid="ref29">(Rotolo
et al., 2015)</xref>
        .
      </p>
      <p>
        As long as our task is to identify the central part of communication network that
feeds further academic discussions on advanced technology within the certain period,
we refer to the approaches focusing on the analysis of citation distributions.
Specifically, we pay attention to the co-citation analysis initially introduced in 1973
        <xref ref-type="bibr" rid="ref25 ref32">(Small,
1973; Marshakova-Shaikevich, 1973)</xref>
        for studies of linkages between the documents
and adopted further to mapping invisible colleges (Gmür, 1973) and clusters of science
        <xref ref-type="bibr" rid="ref33">(Small, 1999)</xref>
        and searching for emerging topics
        <xref ref-type="bibr" rid="ref35">(Small, et al., 2014)</xref>
        . As a measure of
the frequency with which at least two papers are cited together in other documents,
cocitation analysis allows identification cognitively related knowledge clusters accepted
(through citations) by a wider network of followers as mostly valuable in the field.
      </p>
      <p>Similar approaches can be found in graph theory. It shows that spatial configuration
of elements may characterise their role in a network. For instance, Bavelas (1948, 1950)
demonstrated the relationship between centrality and communication processes in small
networks. He showed that optimally positioned actors could accumulate information
flows from dislocated parts of a network and therefore play a gatekeeping role. Smith
(1950) and Leavitt (1951) suggested that authors holding central positions might also
influence behaviour of other linked members.</p>
      <p>
        Following ideas of R.K. Merton
        <xref ref-type="bibr" rid="ref26">(Merton, 1988)</xref>
        we can assume that those actors in
academic networks that gain more attention from their colleagues through received
citations will have a higher social status and therefore hold more central positions
        <xref ref-type="bibr" rid="ref34">(Small,
2004)</xref>
        . Subsequently, a centrality position would mean the author’s association with a
communication core. Recent papers suggest using PageRank algorithm for placing
actors in co-citation networks
        <xref ref-type="bibr" rid="ref12">(Ding et al., 2009)</xref>
        . Compared to other centrality metrics
(e.g. Eigenvector Centrality, Katz Centrality), PageRank may be applied to any
collection of entities with reciprocal quotations and references. It assigns a numerical
weighting to each element of a linked set of documents with the purpose of measuring
its relative importance within the set. This makes PageRank algorithm appropriate for
further analysis. Following recommendations provided in
        <xref ref-type="bibr" rid="ref12">(Ding et al., 2009)</xref>
        in order
to compare different centrality measures for the verification of results, we also consider
betweenness centrality to look at the group of authors connected by shortest paths
passing through a vertex. Papers with high betweenness are essential in a network as long
as they mark structural holes that provide opportunities for mediating knowledge flows
in a wider community of actors
        <xref ref-type="bibr" rid="ref7">(e.g. see Burt, 2002)</xref>
        .
3
      </p>
    </sec>
    <sec id="sec-3">
      <title>Method</title>
      <p>The concept of a communication core is based on the idea of natural social hierarchies
that emerge in knowledge networks along with the evolution of the agenda in academic
discussions. In order to identify a communication core in co-citaton networks that
structure discussions on advanced technology within the selected periods the following four
steps were taken.</p>
      <p>First, a set of documents for further analysis was identified. The data were extracted
from the Web of Science Core Collection database for the period from 1961 until the
end of 2015. The dataset included 8190 documents of all types, extracted from all
citation indexes (accessed: 15.04.2016).</p>
      <p>
        Then, based on the overall publication dynamics we identified several shorter time
periods of active growth. As seen from Fig. 1, while emergence of early papers in the
field goes back to 1960s, the overall number of studies remains insufficient for the
cocitation analysis until mid-1990s (by 1995 the overall amount of papers exceeds 300
with annual growth of 10 papers). Therefore, the first period taken into consideration
was 1961 – 1990. Further periods include papers for the next two decades (1991 – 2000
and 2001 – 2010) and a 5-year interval from 2011 to 2015.
At the third stage, we used VOSviewer software (http://www.vosviewer.com) for
constructing co-citation networks for each of the distinguished time periods that were later
analysed in UCINET (for betweenness calculation) and R programming language (for
PageRank calculation). Formulas for centrality measures were adopted from
        <xref ref-type="bibr" rid="ref12">(Ding et
al., 2009)</xref>
        . Parameters of co-citation networks are provided in Table 1. Chosen
thresholds allow conducting a not overwhelming analysis with redundant nodes, while
providing sufficient data for core identification.
Finally, after calculation of centrality metrics, we took top-30 authors according to each
of the selected metrics and compared the lists. Key results of comparisons are provided
below.
      </p>
    </sec>
    <sec id="sec-4">
      <title>Results</title>
      <p>The period from 1961 to 1990 is less connected and is likely to be associated with
the primary accumulation of knowledge on advanced technology. Although subset of
data for the period included 20 connected nodes, all betweenness measures are equal to
zero; PageRank mean value is equal to 0.05. The latter centrality measure allowed
distinction of the leader node, but no coinciding references were identified.
4.2</p>
      <p>
        1991 – 2000
The network of the second period shows a greater variety in terms of values. Top-30
papers by both metrics is slightly matching: there are only three papers that are
presented in both rankings (for details here and after see tables provided in the Appendix).
Publications that appear in both lists consider specific issues related to economic and
social effects of technology development. Hence, Bartlett &amp; Ghoshal (1989) address
management problems of companies that operate in multinational environment. A study
of Howells (1990) focuses on the relationship between forms of organization and
positioning of corporate R&amp;D. Finally, Barley (1986) touches upon the role of new
technologies on altering organizational structures (for the summary of top ranked
papers see Fig. 2).
The third period is characterised by a higher number of common papers (Table A.2 in
the Appendix), all of which are still focusing on economic and social issues. Here, we
can see two important works of innovation economists paying attention to the role of
technologies in inovation development of a firm
        <xref ref-type="bibr" rid="ref23">(Kline &amp; Rosenberg, 1986)</xref>
        and to the
idea of absorptive capacity
        <xref ref-type="bibr" rid="ref11">(Cohen &amp; Levinthal, 1990)</xref>
        , including, above all, an ability
of a firm to be aware of, identify and take effective advantage of technology
        <xref ref-type="bibr" rid="ref30">(e.g. see
Seaton &amp; Cordey-Hayes, 1993)</xref>
        . Other works of the period introduce methods of patent
analysis to explore R&amp;D spillovers and geographic location of inventions
        <xref ref-type="bibr" rid="ref10 ref21">(Jaffe et al.,
1993; Coe &amp; Helpman, 1995)</xref>
        ; a book on relationship between new technologies and
success of innovation
        <xref ref-type="bibr" rid="ref9">(Christensen, 1997)</xref>
        ; papers on spillover effects of the activities
of multinationals
        <xref ref-type="bibr" rid="ref6 ref8">(Caves, 1974; Blomström &amp; Kokko, 1998)</xref>
        .
4.4
      </p>
      <p>
        The forth period include six common documents (Table A.3 in the Appendix) of
which five come from natural and engineering sciences and are oriented towards the
development and use of specific technologies. The occurence of these papers in the core
network can be considered as a certain level of acceptance of the advanced technology
concept by hard sciences and as its correspondence to certain groups of technologies
like mathematical modelling of living systems
        <xref ref-type="bibr" rid="ref37">(Stolk, et al., 1998)</xref>
        , remote sensing
        <xref ref-type="bibr" rid="ref39">(Weng, et al., 2003)</xref>
        , simulation of technical processes
        <xref ref-type="bibr" rid="ref1">(Asenov, et al., 2003)</xref>
        , and new
materials
        <xref ref-type="bibr" rid="ref17 ref31">(Geim &amp; Novoselov, 2007; Simon &amp; Gogotsi, 2008)</xref>
        . The only economic
paper in the core addresses issues related to international diffusion if technology
        <xref ref-type="bibr" rid="ref22">(Keller, 2004)</xref>
        .
5
      </p>
    </sec>
    <sec id="sec-5">
      <title>Conclusion</title>
      <p>The paper represents evolution of a communication core in academic discussions on
advanced technologies identified with the use of betweenness centrality and PageRank
metrics applied to co-citation networks for the period from 1961 to 2015. The
combination of these methods allowed identifying and considering key alterations in
professional discourse on advanced technology development. Further analysis of co-citation
networks eliminated a common background for the papers in each of the observable
time periods, while the application of centrality metrics helped to distinct key works. It
was shown that there is an observable penetration of the concept from social sciences
to natural and engineering disciplines. At least three phases with foci on different issues
can be distinguished: studies in R&amp;D and technology management (1991 – 2000),
analyses of technology diffusion and innovation development (2001 – 2010), and
discussions on specific technologies and materials (2011 – 2015). Further work can be aimed
at deeper analysis of disciplinary structures in communication networks and at
identification of specific technologies considered as advanced in certain time periods.
Acknowledgements. The research leading to these results has received funding from
the Ministry of Education and Science of the Russian Federation in 2015-2016 (project
ID: RFMEFI60215X0008).</p>
    </sec>
    <sec id="sec-6">
      <title>Appendix</title>
      <sec id="sec-6-1">
        <title>Key statistics:</title>
        <p>Coinciding references (in bold): 3
Mean top-30 betwenness: 1183.3
Mean top-30 PageRank: 0.0032</p>
      </sec>
      <sec id="sec-6-2">
        <title>Betweenness</title>
        <p>Nelson R., 1982
Cohen W., 1990
Moore J., 1969
Hoffert M., 1998
Prahalad C., 1990
Eisenhardt K., 1989</p>
      </sec>
      <sec id="sec-6-3">
        <title>Christensen C., 1997 Jaffe A., 1993</title>
        <p>March J., 1991
Jaffe A., 1989
Williamson O., 1985
Nelson R., 1993
Kline S., 1986
Von Hippel E., 1986
Wigley T., 1996
Rosenberg N., 1982
Teece D., 1997
Kogut B., 1992
Churchill G., 1979
Kaplan R., 1986
Caves R., 1996
Cooper R., 1993
Holland J., 1975</p>
      </sec>
      <sec id="sec-6-4">
        <title>Blomstrom M., 1998</title>
        <p>von Hippel, E. 1994
Caves R., 1974
Brown S., 1995
Hobday M., 1995
Cantwell J., 1995
Coe D.T., 1995</p>
      </sec>
      <sec id="sec-6-5">
        <title>Key statistics:</title>
        <p>Coinciding references (in bold): 7
Mean top-30 betwenness: 195.9
Mean top-30 PageRank: 0.012</p>
      </sec>
      <sec id="sec-6-6">
        <title>Page Rank Blomstrom M., 1998</title>
      </sec>
      <sec id="sec-6-7">
        <title>Betweenness</title>
        <p>Bradley T., 2009
Rogers E., 1995
Tsang Y., 2007
Fornell C., 1981
Simon P., 2008
Hair J., 1998
Geim A., 2007
Tarascon J., 2001
Novoselov K., 2005
Kim K., 2009
Tian B., 2010
Asenov A., 2003
Weng F., 2003
Zhao W., 2006
Moore G., 1965
Borkar S., 2005
Griliches Z., 1957
Rogers E., 2003
Keller W., 2004
Asenov A., 1998
Mizuno T., 1994
Weng F., 2000
Shannon M., 2008
Asenov A., 2003
Stolk P., 1998
Benotti M., 2009
Baron R., 1986
Ferraro R., 2005
Kuhn K., 2007
Aitken B., 1999</p>
      </sec>
      <sec id="sec-6-8">
        <title>Key statistics:</title>
        <p>Coinciding references (in bold): 6
Mean top-30 betwenness: 1075.6
Mean top-30 PageRank: 0.0077</p>
      </sec>
      <sec id="sec-6-9">
        <title>Page Rank Weng F., 2003</title>
        <p>Weng F., 2012
Grant R., 1996
Simon P., 2008
Geim A., 2007
Ahlbin J., 2009
Calin T., 1996
Wang H., 2010
Keller W., 2004
Aumann H., 2003
Seifert N., 2010
Stoller M., 2008
Weng F., 2013
Zhang L., 2009,
Winter M., 2004
Nakada N., 2007
Cohen W., 1990
Surussavadee C., 2007
Surussavadee C., 2008
Surussavadee C., 2008
Chatterjee I., 2011
Takeuchi K., 2007
Han Y., 2007
Amusan O., 2006
Harris B., 2001
Nonaka I., 1995
Weng F., 1994
Asenov A., 2003
Stolk P., 1998
Copeland B., 2004</p>
      </sec>
    </sec>
  </body>
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