111,507 research outputs found
Efficiency Gains and Myopic Antitrust Authority in a Dynamic Merger Game
No full textThis paper uses an endogenous coalition formation game to derive an upper bound to industry concentration. The proposed coalitional stability concept assumes that firms are endowed with foresight in that they look ahead and anticipate the ultimate outcome of their actions. It is shown that while in exogenous sunk cost industries the upper bound to concentration falls as the market becomes large, in endogenous sunk cost industries, regardless of the size of the market, arbitrarily concentrated outcomes can arise in equilibrium. In addition, for this second class of industries, if products are sufficiently good substitutes, then duopoly coalition structures can only be sustained in equilibrium if composed of sufficiently size asymmetric coalitions. The results, therefore, complement those of Sutton [Sutton, J. 1991, Sunk Costs and Market Structure, Cambridge, MA: MIT Press; Sutton, J. 1998, Technology and Market Structure: Theory and History, Cambridge, MA: MIT Press.]
Graph rings and ideals: Wolmer Vasconcelos contributions
No full textThis is a survey article featuring some of Wolmer Vasconcelos contributions
to commutative algebra, and explaining how Vasconcelos' work and insights have
contributed to the development of commutative algebra and its interaction with
other areas to the present. We show that the regularity of subrings of normal
-uniform monomial ideals is a monotone function, and we give a normality
criterion for edge ideals of graphs using Ehrhart rings
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
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
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
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
Robert H. Thonhoff Collection, 1839-2013
No full textThe Robert H. Thonhoff Collection consists of research materials, newspapers, writings, artifacts, printed items, and published works representing the personal and professional activities of the Texas author, historian, teacher, and judge. The Collection also includes the papers of Thonhoff’s colleagues, fellow historians and authors: John Ogden Leal, Eric & Conchita Beerman, Ron Higginbotham, Maurice Ballard, Robin Ellis, Granville W. Hough, and Sr. Jose Ignacio Vasconcelos.
Much of the materials and research within the collection are photocopies.https://digitalcommons.tamusa.edu/findingaids/1179/thumbnail.jp
Contribution of Information and Communication Technology (ICT) in Country’S H-Index
No full textThe aim of this study is to examine the effect of Information and Communication Technology (ICT) development on country’s scientific ranking as measured by H-index. Moreover, this study applies ICT development sub-indices including ICT Use, ICT Access and ICT skill to find the distinct effect of these sub-indices on country’s H-index. To this purpose, required data for the panel of 14 Middle East countries over the period 1995 to 2009 is collected. Findings of the current study show that ICT development increases the H-index of the sample countries. The results also indicate that ICT Use and ICT Skill sub-indices positively contribute to higher H-index but the effect of ICT access on country’s H-index is not clear
Merger remedies in the European Union: An overview
No full textIn this article, we briefly review the EC policy on merger remedies. In doing so, we stress the possible problems and risks associated with the different types of remedies. Although overall we believe the EC has taken a very sensible approach (its recent policy on merger remedies clearly makes treasure of the FTC experience), we are still not too optimistic that remedies will be able to restore competition in the majority of the cases. Although we acknowledge that the EC has taken a number of steps to guarantee that remedies will be successful in restoring competition, we argue that the EC should make even more attention to the possibility that the divestiture favours collusion, and we suggest that a more widespread use of the practice of finding an ‘upfront buyer’ might also help in this respect
The orient and the classical world in José Vasconcelos
No full textEn muchos aspectos el pensamiento de José Vasconcelos (1882–1959) sufrió
cambios notables durante su vida. Sus ideas sobre el mundo clásico grecorromano
y el Oriente también los experimentaron. A diferencia de sus contemporáneos
reunidos en el Ateneo de la Juventud, fue crítico del mundo clásico
y buscó fuentes de inspiración estética y moral en la India, mostró curiosidad
por el Japón y por el Islam. Sus ideas sobre el mestizaje y la "raza cósmica"
deben mucho a este interés. Con los años, sin embargo, su creciente
conservatismo también influyó en sus ideas sobre el mundo clásico y el
Oriente. Este último le fue cada vez más alejado, sobre todo el Islam, objeto
de su odio principal. Como ello se daba cuando otros intelectuales enrolados
en la izquierda ensayaban un movimiento de simpatía hacia el mundo colonial,
contribuyeron a exacerbar la reacción de Vasconcelos.In many aspects, José Vasconcelos’s (1882–1959) thought underwent notable
changes during his lifetime. His ideas about the Greco–Roman and Oriental
classical world also changed. Unlike his contemporaries assembled in the Ateneo
de la Juventud, Vasconcelos was a critic of the classical world. He looked
for sources of aesthetic and moral inspiration in India, and he was very
curious about Japan and the Islam. His ideas about race mixing and the
«cosmic race» owe much to such curiosity. With the passing of years, however,
his growing conservatism also influenced his ideas about the classical world
and the Orient. The latter got farther and farther away from him, the Islam in
particular, the subject of his hatred. As this happened when other leftist
intellectuals were showing their sympathy for the colonial world, their attitude
contributed to exacerbate Vasconcelos’s reaction.Fil: Taboada, Hernán G. H..
Universidad Nacional Autónoma de México. Centro de Investigaciones sobre América Latina y el Carib
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