1,354,305 research outputs found
Equilibrium Structure of Production Economies with Uncertainty: The Natural Projection Approach
No full textThe paper generalizes the natural projection approach introduced by Balasko (1988) to production economies with uncertainty. It explores the equilibrium structure of the long run and short run private ownership production model. It is shown that qualitative equilibrium properties of the production model are those of the exchange model with production adjusted demand functions.Existence of Equilibrium, Equilibrium Structure, Uncertainty, Production.
On the number of critical equilibria separating two equilibria
No full textIt is shown that two arbitrary equilibria in the general equilibrium model without sign restrictions on endowments can be joined by a continuous equilibrium path that contains at most two critical equilibria. This property is strengthened by showing that regular equilibria having an index equal to one, a necessary condition for stability, can be joined by a path containing no critical equilibrium. These properties follow from the real-algebraic nature of the set of critical equilibria in any fiber of the equilibrium manifold.Equilibrium prices, equilibrium manifold, equilibrium path, critical equilibrium, catastrophe
General Equilibrium without Utility Functions: How far to go?
No full textHow far can we go in weakening the assumptions of the general equilibrium model? Existence of equilibrium, structural stability and finiteness of equilibria of regular economies, genericity of regular economies and an index formula for the equilibria of regular economies have been known not to require transitivity and completeness of consumers’ preferences. We show in this paper that if consumers’ non-ordered preferences satisfy a mild version of convexity already considered in the literature, then the following properties are also satisfied: 1) the smooth manifold structure and the diffeomorphism of the equilibrium manifold with a Euclidean space; 2) the diffeomorphism of the set of no-trade equilibria with a Euclidean space; 3) the openness and genericity of the set of regular equilibria as a subset of the equilibrium manifold; 4) for small trade vectors, the uniqueness, regularity and stability of equilibrium for two version of tatonnement; 5) the pathconnectedness of the sets of stable equilibria.general equilibrium; equilibrium manifold; natural projection; demand functions
Pareto : improving default
No full textFil: Balasko, Yves. Universidad de San Andrés. Departamento de Economía; Argentina.Fil: Kawamura, Enrique. Universidad de San Andrés. Departamento de Economía; Argentina.This paper answers the question of whether non-strategic default improves welfare, not
only for borrowers with uncertain future income but also for lenders with certain future
endowments, relative to no default. We show that the answer is a¢ rmative for a positive-
Lebesgue-measure set of individual endowments. Numerical computations show that the
size of such endowment set is larger the larger are both the risk aversion and the probability
of default. Other numerical examples show that with defaultable securities lenders may
nance the purchase of the latter by selling short default-free assets. This portfolio reminds
those of hedge-funds such as LTCM
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
Variations on the Author
No full text“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
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
Implementation of the ABC quantum mechanical reactive scattering program on the EGEE grid platform
No full textComputer based simulation of quantum mechanical reactive scattering is a CPU intensive process. Despite the small I/O traffic a single simulation requires several thousand CPU hours. The ABC program provides an impelementation for quantum mechanical reaction simulation in such a way that the code can be efficiently ported to parallel computing platforms. The Computational Chemistry and Application Porting Support groups of the EGEE project worked together to create a grid enabled version of the ABC code. The collaboration resulted a Grid application that is capable of using several clusters and storage servers of the EGEE Grid symultaneously, achieving significant speed-up. The application has been ported to EGEE Grid as a parameter study application with the P-GRADE Grid portal. The paper describes the application porting process, the technical analysis and performance of the local and the Grid enabled ABC application
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
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
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