1,721,064 research outputs found
Capital externalities in OLG economies
No full textThe recent literature has stressed that externalities, however small, may lead to indeterminacy and endogenous fluctuations while, on the contrary, intertemporal substitution in consumption leads to local uniqueness. This paper introduces increasing returns, through aggregate capital externalities, into the overlapping generations model with endogenous labor
and consumption in both periods of life. We show that local determinacy of the steady state prevails, when externalities are arbitrarily small, as long as the fraction of young-age
consumption out of wage income is large enough. Conversely, local indeterminacy with small externalities requires both labor supply to be close to indivisible and irrealistic values of the
propensity to save out of the wage income. More surprising is the fact that increasing the size of externalities indeed reducesthe range of values of the consumption-to-wage ratio associated
with multiple equilibria, because of two conflicting effects on savings that operate through wage and interest rate
Short-run pain, long-run gain: the conditional welfare gains from international financial integration
No full textThis paper aims at clarifying the analytical conditions under which financial globalization originates welfare gains in a simple endogenous growth setting. We focus on an open-economy (Formula presented.) model in which the capital-deepening effect of financial globalization boosts growth in a in permanent but entails an entry cost in order to access international credit markets. We show that constrained borrowing triggers substantial welfare gains, even at small levels of international financial integration, provided that the autarkic growth rate is larger than the world interest rate. Such conditional welfare benefits boosted by stronger growth—long-run gain—arise in our preferred model without investment commitment and they range, relative to autarky, from about (Formula presented.) in middle-income countries to about (Formula presented.) in OECD-type countries under international financial integration. Sizeable benefits emerge despite the fact that consumption initially falls—short-run pain—which is, however, shown not to dwarf positive growth changes
Robustness of Multiple Equilibria in OLG Economies
No full textThis paper extends the standard Diamond's two-period OLG model of capital accumulation by introducing labor-leisure choice into the first-period of agents' life. Under the assumption of gross substitutability, we show that multiple intertemporal equilibria require both highly complementary inputs and a low fraction of consumption out of wage income by the young generation. On the contrary, if capital and labor are sufficiently substitutable, or if young agents consume a realistically large proportion of their wage income, multiple intertemporal equilibria and, therefore, endogenous fluctuations driven by self-fulfilling beliefs, are ruled out. We further illustrate, in contrast with the related literature, that intertemporal substitution in consumption across periods is a critical mechanism which enables short-lived agents to arbitrage away expectationally driven fluctuations when the ratio between saving and wage is reasonably low. As a result, the OLG model's predictions are substantially similar to the usual optimal growth model. (Copyright: Elsevier)overlapping generations, endogenous labor supply, gross substitutability, multiple equilibria, endogenous fluctuations.
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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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