1,720,979 research outputs found
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
Fiscal Policy in a Two-Sector Economy with Public Capital and Congestion
Get PDFThis paper focuses on the role of government capital as a critical productive input when the level of services that the agent derives from it is subject to congestion. I develop a two-sector “nonscale” production model in which there are two types of firms, conventional profit-maximizing private firms, and “public firms”, whose objective is to produce a specified quantity of government investment goods – determined by government policy – at minimum cost. Furthermore, the production functions of the two sectors need not in general coincide. Using this two-sector production set-up I assume that the positive externality of the public capital is associated with two types of congestion, proportional and aggregate. A variety of fiscal disturbances are analyzed. Because of the complexity of the model the analysis is carried out using simulations of a calibrated economy. The effects of tax policies are remarkably robust with respect to the relative capital intensities of the two productive sectors. In contrast, the effects of government investment are much more sensitive to this aspect. The introduction of congestion decreases the steady state growth rate of the economy. The relative congestion has stronger effects when the variation in the government investment is analyzed, whereas the absolute congestion is more relevant in the analysis of the change in the tax on capital income. The papers highlight the intertemporal dimensions of fiscal policy and the tradeoffs these involve for economic performance, especially growth and welfare.endogenous growth, fiscal policy, public capital, congestion
Female Labor Force Participation and Welfare if Status Conscious with Multiple Reference Groups
Get PDFI develop a model with status concerns to analyze how different economic factors affect female participation, average household income and wage, as well as the welfare of both stay-at-home and working wives. Reductions in the price of domestic goods and increases in female wages have positive effects on female participation. Increases in male wages have different effects on female participation depending on whether they affect female wages or not. Events that lead to increases in female participation are usually associated with decreases in the welfare of stay-at-home wives, but are not necessarily associated with increases in welfare of working wivesfemale labor force participation; relative income
Fiscal Policy in a Two-Sector Economy with Public Capital and Congestion
No full textThis paper focuses on the role of government capital as a critical productive input when the level of services that the agent derives from it is subject to congestion. I develop a two-sector “non-scale†production model in which there are two types of firms, conventional profit-maximizing private firms, and “public firmsâ€, whose objective is to produce a specified quantity of government investment goods – determined by government policy – at minimum cost. Using this two-sector production set-up I assume that the positive externality of the public capital is associated with two types of congestion, proportional and aggregate. A variety of fiscal disturbances are analyzed. Because of the complexity of the model the analysis is carried out using simulations of a calibrated economy. The effects of tax policies are remarkably robust with respect to the relative capital intensities of the two productive sectors. In contrast, the effects of government investment are much more sensitive to this aspect. The introduction of congestion decreases the steady state growth rate of the economy. The relative congestion has stronger effects when the variation in the government investment is analyzed, whereas the absolute congestion is more relevant in the analysis of the change in the tax on capital income. The papers highlight the intertemporal dimensions of fiscal policy and the tradeoffs these involve for economic performance, especially growth and welfare.public capital, non scale growth model, fiscal policy, congestion
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
Leisure Externalities: Implications for Growth and Welfare
Get PDFThis paper develops a neoclassical growth model with leisure externalities. Ignoring positive (negative) leisure externalities leads to equilibrium consumption, labor and capital that are too high (low) and leisure that is too low (high). The government should tax (subsidize) labor income according to whether the leisure externality is positive or negative. The level of this tax (subsidy) depends on the elasticity of individual and average leisure and the consumption tax. Equilibrium dynamics are characterized, and two shocks to the economy are analyzed – an increase in the growth rate of labor productivity, and an increase in the tax on labor income – by simulating a calibrated economy. Adjustment processes of key variables in a competitive and centrally planned economy with and without leisure externalities are also compared.externalities, transitional dynamics, economic growth
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