125,180 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Mobility, diversity, inequality, sustainability: cross-cutting issues of cultural, scientific and social relations between the European Union and Latin America/the Caribbean
No full textBirle P, Göbel B, Boyer M, Krusche J. Mobility, diversity, inequality, sustainability: cross-cutting issues of cultural, scientific and social relations between the European Union and Latin America/the Caribbean. Hamburg: EU-LAC Foundation; 2020
The cultural dimension of European Union-Latin American relations through the lens of cross-cutting issues of mobility, inequality, diversity and sustainability
No full textBirle P, Göbel B, Krusche J. The cultural dimension of European Union-Latin American relations through the lens of cross-cutting issues of mobility, inequality, diversity and sustainability. In: Bonet L, Schargorodsky H, eds. The Challenges of Cultural Relations between the European Union and Latin America and. Barcelona: Quaderns Gescènic; 2019: 85-108
Pragmatic Case Studies as a Source of Unity in Applied Psychology
No full textTo unify or not to unify applied psychology: that is the question. In this article we review pendulum swings in the historical efforts to answer this question—from a comprehensive, positivist, “top-down,” deductive yes between the 1930s and the early 60s, to a postmodern no since then. A rationale and proposal for a limited, “bottom-up,” inductive yes in applied psychology is then presented, employing a case-based paradigm that integrates both positivist and postmodern themes and components. This paradigm is labeled “pragmatic psychology” and, its specific use of case studies, the “Pragmatic Case Study Method” (“PCS Method”). We call for the creation of peer-reviewed journal-databases of pragmatic case studies as a foundational source of unifying applied knowledge in our discipline. As one example, the potential of the PCS Method for unifying different angles of theoretical regard is illustrated in an area of applied psychology, psychotherapy, via the case of Mrs. B. The article then turns to the broader historical and epistemological arguments for the unifying nature of the PCS Method in both applied and basic psychology.Peer reviewe
La dimensión cultural de las relaciones entre la Unión Europea y América Latina bajo el prisma de cuestiones transversales de movilidad, desigualdad, diversidad y sostenibilidad
No full textBirle P, Göbel B, Krusche J. La dimensión cultural de las relaciones entre la Unión Europea y América Latina bajo el prisma de cuestiones transversales de movilidad, desigualdad, diversidad y sostenibilidad. In: Bonet L, Schargorodsky H, eds. Retos de las relaciones culturales entre la Unión Europea y América Latina y el Caribe. Barcelona: Quaderns Gescènic; 2019: 87-112
Photoproduction of pion pairs off nucleons
No full textIn the absence of a solution for Quantum Chromodynamics (QCD) in the low energy regime, so called effective models are being used to describe the nucleon and
its excited states. These models include the basic symmetries from QCD, but on the other hand, compared to quarks and gluons, use higher lying degrees of freedom.
Experimental contributions are mandatory to validate these models and fix free parameters. Today still most of the world-data in this field was obtained by
meson-induced excitation of the nucleon. Even though numerous excited states of the nucleon could be identified, the number of model predicted states is much
higher. This is known as the missing resonance problem. One explanation could be that some excited states just couple weakly to pion-N (kaon-N) and hence the
excitation via photons was proposed to further test the model predictions.
During the last 15 years, much experimental effort was made at various photoproduction facilities like MAMI, ELSA, JLab or ESRF and a large number of states
could be confirmed, but the missing resonance problem could not be solved. Higher lying resonances (M > 1.6 GeV) decay preferably via sequential decays with
many meson final states, and especially double pion decay channels are assumed to dominate in this region. The reactions investigated in this work, namely
g+p(n)->pion^0+pion^0+p(n), g+n(p)->pion^0+pion^0+n(p), g+p->pion^0+pion^0+p, g+p(n)->pion^++pion^0+n(n), g+n(p)->pion^-+pion^0+p(p), g+p->pion^++pion^0+n
thus form the primary source of information on photocouplings of higher lying resonances.
This work explores neutral and mixed-charge double pion production channels up to invariant masses of the final state center-of-mass system of about 1.9 GeV
and presents unpolarized as well as single-polarized observables. All results have high precision, are compared to different model predictions, and will
considerably constrain future model analyses in the field of double pion photoproduction and beyond.
The data of this work were taken at MAMI in four different experiments with liquid hydrogen and deuterium targets in 2007 and 2009 and include over 600 hours
of beam time. A longitudinally polarized electron beam was used to produce circularly polarized bremsstrahlung photons with energies up 1.4 GeV. The reaction
products, charged pions, photons and nucleons, were detected in the combined calorimeter consisting of Crystal Ball and TAPS.
Total and differential cross sections, invariant mass distributions of N-pion and pion-pion and beam helicity asymmetries were computed in the fully reconstructed
final state center-of-mass system. Effects from Fermi motion in the deuteron target could be reliably defolded leading to a good agreement between free and
quasifree proton data, and thus the neutron results can be interpreted as a good approximation of free neutron data.
Beam-helicity asymmetries for g+n(p)->pion^0+pion^0+n(p) and g+n(p)->pion^-+pion^0+p(p) have been measured for the first time and published together with the
results from the proton data. Especially for the mixed-charge results, the available model calculations fail to reproduce the data, and for the neutral channel
data, an unexpected similarity for proton and neutron results was observed.
Total and differential cross sections as well as invariant mass distributions of N-pion and pion-pion for g+n(p)->pion^-+pion^0+p(p) have also been measured for
the first time and previous results for g+p(n)->pion^++pion^0+n(n) could be reproduced and extended into the third resonance region
Dr. Edwin Wright Collection: Author Unknown
No full textNotes - The author relates several short stories about his neighbours including Alex McDonell, homesteading and life around Meanook and Athabasca (1 page
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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