180,892 research outputs found
A lifeline for the weakest link? Financial contagion and network design
No full textIn "A Lifeline for the Weakest Link? Financial Contagion and Network Design," Yaron Leitner describes how contagion can occur, explains why the threat of contagion is not necessarily a bad thing, and shows why some firms may choose to bail out other firms that are facing financial problems.Contracts ; Financial crises
Digamasellus brevipilis Leitner
No full text<p>17. Digamasellus brevipilis Leitner 1949.</p> <p>Fundort: Wie vorige Species, 19. VI. 49.</p> <p>Neu für die deutsche Fauna.</p>Published as part of <i>Willmann, C., 1952, Die Milbenfauna der Nordseeinsel Wangerooge, pp. 139-186 in Veröffentlichungen des Instituts für Meeresforschung Bremerhaven 1</i> on page 14
Lenore : Oper in drei Aufzügen (Aria di Conrad, Recitativ und Arie N° 6)
No full text[Musik von Anselm Hüttenbrenner. Gedichtet v. Carl R. v. Leitner und F. Kollmann. - Herausgegeben von Tiziano Duca. - Partitur. - Graz : Universität für Musik und darstellende Kunst Graz, 2022
"Fulling di spies": Promoting Bilingualism in Jamaican Newspapers and Blogs
No full textThe essay investigates the promotion of bilingualism in Jamaica through the use of online newspapers and blogs
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
Dataset and Scripts "An Evaluation of Open-Source Software Microbenchmark Suites for Continuous Performance Assessment"
No full textDataset and R scripts for "An Evaluation of Open-Source Software Microbenchmark Suites for Continuous Performance Assessment" by Laaber and Leitner, published at Mining Software Repositories (MSR) in 201
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
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
PERFORMANCE AND EFFICIENCY PF A HYBRID SELF-PROPELLED CABLE LOGGING CARRIAGE: AN EXPERIMENTAL STUDY
No full textGlobal warming and the dependance on expensive fossil fuels in uncertain times are two main drivers for the development of alternative drivetrains. The alpine logging sector is no exception. Indeed, electrification has demonstrated significant potential for fuel savings in cable logging applications, particularly due to the high capacity for energy recovery in cyclic operations involving variations in potential energy. This work presents results of a study involving several key sub-systems as well as the roundtrip efficiency of a hybrid self-propelled carriage called HULK. In addition to performance and efficiency studies of the engine-generator unit, energy dissipation unit and battery system, its two main drive systems, i.e., the dropline winch and the propulsion module, have been evaluated. The tests enabled the performance mapping of key components, identification of optimal operating points, and confirmation of the substantial energy recovery potential. Furthermore, the results highlight the feasibility of energy-autarkic operation in real-world transport applications
Phase matched second harmonic generation from nanostructured metallic surfaces
No full textPlanar structures containing oriented and ordered metallic nanoparticles with shapes lacking an inversion centre can act as a nonlinear medium for generation of second harmonic optical radiation by a process whose directional features resemble those of phase matched second harmonic generation (SHG) in bulk media. The nonlinearity of the metallic patterns stems from the asymmetric modulation of the local field inside nanoparticle by electron oscillations and is deeply rooted in the nanostructured nature of the system. The SHG efficiency is inversely proportional to the second power of the nanoparticle size
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