1,720,961 research outputs found
Quantity competition, endogenous motives and behavioral heterogeneity
No full textThe paper shows that strategic quantity competition can be characterized
by behavioral heterogeneity, once competing firms are allowed in a
pre-market stage to optimally choose the behavioral rule they will follow in
their strategic choice of quantities. In particular, partitions of the population
of identical firms in which some of them are profit maximizers while others follow
an alternative criterion, turn out to be deviation-proof equilibria both in
simultaneous and sequential game structures. Our findings that in a strategic
framework heterogeneous behavioral rules may be consistent with individual
incentives is a first attempt to provide a game-theoretic microfoundation of
heterogeneity
Privatization in an international mixed oligopoly: The role of product differentiation under price competition
No full textBy developing a linear model in a two-country framework of international price competition, we show how the degree of product differentiation and the cross-country distribution of private firms affect the strategic privatization choices made by governments concerned with their own country's welfare. More particularly, the work points out that sufficiently low product differentiation may lead public ownership to be optimally chosen to restrict competition in the country with the larger number of firms, and privatization to be global welfare enhancing in this case
How to Compete? Cournot versus Bertrand in a Vertical Structure with an Integrated Input Supplier
No full textWe study whether a quantity or a price contract is chosen at equilibrium by one integrated firm and its retail competitor in a differentiated duopoly. Using a similar vertical structure, Arya et al. (2008) show that Bertrand competition is more profitable than Cournot competition, which contrasts with conventional wisdom. In this article, we first demonstrate that such a result is robust to the endogenous determination of the type of contract. Second, by introducing managerial incentives in the model, we find that delegation to managers may lead each firm to choose a quantity contract and, as long as products are sufficiently differentiated, entails conflicting choices causing nonexistence of equilibrium in pure strategies. Significantly high product substitutability reconciles firms’ objectives under delegation, leading unique or multiple equilibria with symmetric types of contracts to arise
Strategic Delegation and Market Competitiveness
No full textWithin a strategic delegation model, this paper examines in a quantity setting oligopoly framework the determinants of the degree of strategic delegation - the latter being defined as the extent of the departure from pure profit maximization. The sub-game perfect equilibrium degree of strategic delegation is derived as a function of the two key parameters which determine market competitiveness in a homogeneous product set-up, i.e., the price-elasticity of market demand and the number of firms. With respect to both these parameters we find that their relationship with the degree of delegation is not necessarily monotone. Indeed, for an increase in elasticity or a reduction in market concentration to reduce strategic delegation, these determinants of the Lerner index of monopoly power must satisfy restrictions which guarantee that the initial market environment is sufficiently competitive.
Codice Scopus: 2-s2.0-7795291059
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Full text linkWe 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
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