Authors:Morteza Maghrebi, Ali Abbasi, Saeid Amiri, Reza Monsefi, and Ahad Harati
use of some measurable indicators.
Bibliometric delineation of published articles/patents is one of the essential tools for monitoring scientific/technological trends, and nanotechnology is not an exception. The bibliometric delineation is
Authors:Julie Callaert, Joris Grouwels, and Bart Van Looy
; Kotsiantis 2007 ; Hastie and Friedman 2009 ).
In order to arrive at an algorithm that allows delineating scientific references, a ‘learning set’ was created, consisting of 25,783 NPRs. These references were selected randomly from 7,582,096 NPRs
Authors:John B. Saunders, Wei Hao, Jiang Long, Daniel L. King, Karl Mann, Mira Fauth-Bühler, Hans-Jürgen Rumpf, Henrietta Bowden-Jones, Afarin Rahimi-Movaghar, Thomas Chung, Elda Chan, Norharlina Bahar, Sophia Achab, Hae Kook Lee, Marc Potenza, Nancy Petry, Daniel Spritzer, Atul Ambekar, Jeffrey Derevensky, Mark D. Griffiths, Halley M. Pontes, Daria Kuss, Susumu Higuchi, Satoko Mihara, Sawitri Assangangkornchai, Manoj Sharma, Ahmad El Kashef, Patrick Ip, Michael Farrell, Emanuele Scafato, Natacha Carragher, and Vladimir Poznyak
that the delineation of disorders was to be based primarily on the content and behavior, such as gaming, pornography/sexting, and gambling. This notion corresponds with the recent DSM-5 including Internet gaming disorder as a “condition for further
The Journal Citation Reports of the Science Citation Index 2004 were used to delineate a core set of nanotechnology journals and a nanotechnology-relevant
set. In comparison with 2003, the core set has grown and the relevant set has decreased. This suggests a higher degree of
codification in the field of nanotechnology: the field has become more focused in terms of citation practices. Using the citing
patterns among journals at the aggregate level, a core group of ten nanotechnology journals in the vector space can be delineated
on the criterion of betweenness centrality. National contributions to this core group of journals are evaluated for the years
2003, 2004, and 2005. Additionally, the specific class of nanotechnology patents in the database of the U. S. Patent and Trade
Office (USPTO) is analyzed to determine if non-patent literature references can be used as a source for the delineation of
the knowledge base in terms of scientific journals. The references are primarily to general science journals and letters,
and therefore not specific enough for the purpose of delineating a journal set.
Authors:Patricia Laurens, Michel Zitt, and Elise Bassecoulard
In advanced methods of delineation and mapping of scientific fields, hybrid methods open a promising path to the capitalisation
of advantages of approaches based on words and citations. One way to validate the hybrid approaches is to work in cooperation
with experts of the fields under scrutiny. We report here an experiment in the field of genomics, where a corpus of documents
has been built by a hybrid citation-lexical method, and then clustered into research themes. Experts of the field were associated
in the various stages of the process: lexical queries for building the initial set of documents, the seed; citation-based
extension aiming at reducing silence; final clustering to identify noise and allow discussion on border areas. The analysis
of experts’ advices show a high level of validation of the process, which combines a high-precision and low-recall seed, obtained
by journal and lexical queries, and a citation-based extension enhancing the recall. This findings on the genomics field suggest
that hybrid methods can efficiently retrieve a corpus of relevant literature, even in complex and emerging fields.
EU’s Common Agricultural Policy encourages maintaining agricultural production in less favored areas (LFA) to secure both stable production and income to farmers and to protect the environment. Recently the delimitation of LFAs is suggested to be carried out using common biophysical diagnostic criteria on low soil productivity and poor climate conditions all over Europe. The criterion system was elaborated by European Commission’s Joint Research Center (JRC) and its operational implementation comes under member state competence. This process requires the existence of an adequate national spatial soil information system with appropriate data structure and spatial resolution as well as a proper methodology for its analysis. Hungary possesses an appropriate, nationwide, 1:25,000 scale legacy dataset originating from the national soil mapping project, which was digitally processed and developed into the Digital Kreybig Soil Information System (DKSIS). In the paper we present how DKSIS was applied for the identification and delineation of areas in Hungary concerned by the common biophysical criteria related to soil. Soil data linked to soil profiles and SMUs were jointly spatially analyzed for the compilation of nationwide digital maps displaying spatial distribution of specific limiting factors.
Phytogeographical regions have been set up traditionally on the basis of the flora. Several examples indicate that the potential natural vegetation is also suitable for this purpose although the flora- and vegetation-based boundaries do not necessarily overlap. We define a vegetation region as an area where the physical geographic features are rather uniform, and which consists of landscapes with floristically/structurally similar vegetation and/or their repetitive mosaics. In this paper, we delimited the boundaries of the Pannonian region based on the distribution of characteristic plant communities. The line runs most often on the border between Quercus cerris-Quercus petraea and Carpinus betulus/Fagus sylvatica dominated landscapes. We provided descriptions of the potential vegetation on both sides of the boundary. The region has an area of 167,012 km2. The region is either in direct contact with the neighboring regions (e.g., Western Carpathians), or is separated from them by transitional areas (towards the Eastern Alps), and character-poor areas with non-Pannonian, non-Alpine, non-Dinaric vegetation (in the southwest to the Western Balkan). Often, the boundary does not coincide with the boundary of the Pannonicum floristic province. We found that vegetation region boundaries can help reevaluate long-established floristic region boundaries. The boundary of the ’floristic Pannonian region’ also requires revision based on integrated distribution databases and statistical analyses. We argue that the method applied here is simple, repeatable and falsifiable. Our map provides an opportunity to the European Union to use a scientifically more sound biogeographical circumscription of the Pannonian region in her Natura 2000 and other programs.
The journal set which provides a representation of nanoscience and nanotechnology at the interfaces among applied physics,
chemistry, and the life sciences is developing rapidly because of the introduction of new journals. The relevant contributions
of nations can be expected to change according to the representations of the relevant interfaces among journal sets. In the
2005 set the position of the USA decreased more than in the 2004-set, while the EU-27 gained in terms of its percentage of
world share of citations. The tag “Y01N” which was newly added to the EU classification system for patents, allows for the visualization of national
profiles of nanotechnology in terms of relevant patents and patent classes.
In order to attribute journals to specialties in a dynamic journal set by using aggregated journal-journal citations derived from theScience Citation Index, it is necessary to complement the multi-variate analysis of this data with a time-serices perspective. This calls for a more analytical approach to the problem of choice among the many possible parameters for clustering. Changes in the disciplinary structure of science are tracked by using thedifferences among the multi-variate analyses for the various years. It is impossible to attribute change systematically to structure, noise, or deviance if these uncertainties are not clearly definedex ante. The study discusses the various choices which have to be made, in both conceptual and methodological terms. In addition to hierarchies among journals, one has to assume heterarchy among journal groups (and their centroids). For comprehensive mapping, a concept of macro-journals as representations of a density of points in the multi-dimensinoal space is defined. Empirical reslts indicate the feasibility of dynamic journal-journal mapping by using these methods.
Authors:Michel Zitt, Suzy Ramanana-Rahary, and Elise Bassecoulard
The increasing use of bibliometric indicators in science policy calls for a reassessment of their robustness and limits. The
perimeter of journal inclusion within ISI databases will determine variations in the classic bibliometric indicators used
for international comparison, such as world shares of publications or relative impacts. We show in this article that when
this perimeter is adjusted using a natural criterion for inclusion of journals, the journal impact, the variation of the most
common country indicators (publication and citation shares; relative impacts) with the perimeter chosen depends on two phenomena.
The first one is a bibliometric regularity rooted in the main features of competition in the open space of science, that can
be modeled by bibliometric laws, the parameters of which are “coverage-independent” indicators. But this regularity is obscured
for many countries by a second phenomenon, the presence of a sub-population of journals that does not reflect the same international
openness, the nationally-oriented journals. As a result indicators based on standard SCI or SCISearch perimeters are jeopardized
to a certain extent by this sub-population which creates large irregularities. These irregularities often lead to an over-estimation
of share and an under-estimation of the impact, for countries with national editorial tradition, while the impact of a few
mainstream countries arguably benefits from the presence of this sub-population.