1,720,978 research outputs found
The Economic Impact of Covid-19 and Associated Lockdown Measures in China
Get PDFThis paper assesses at the local level the economic impact of Covid-19 and associated lockdown measures in China using high frequency nighttime lights data. Building a model of monthly light intensity, lights dropped by a factor ranging between 13 and 18 percent in early 2020. This corresponds to a decline in economic activity of between 9 and 12 percent and a decline in employment of between 2.6 and 3.6 percent. At the local level, the majority of administrative entities followed a v-shaped recovery, while a smaller number followed a u-shaped recovery or a double dip. At province level, light intensity is explained by the number of cases and a lockdown measure. In particular, the increase in stringency index from 0 in December 2019 to 78 in April 2002 explains a decline in lights by 7.4 percent
Tradable Jobs and Local Labour Market in sub-Saharan Africa
Get PDFThis paper measures the impact of attracting tradable jobs on nontradable jobs at the local level in sub-Saharan countries. Applying the local multiplier approach to 10 medium and low-income countries disaggregated into 1441 administrative entities, we show that the multipliers are 3 to 5 times larger than in high-income countries. The multipliers also increase with the employment status and the skills of the tradable jobs created, highlighting the importance of the consumption of locally produced goods. This points to the importance of manufacturing for economic development and structural transformation. The paper also suggests a modification of the usual shift-share instrumental variable in countries characterized by sectoral diversification/unconditional convergence. Lastly, we show that the multipliers maybe be impacted by the size of administrative entities
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
Convergence Heterogeneity at the Local Level in Sub-Saharan Africa
Get PDFThis paper tests for convergence in labor productivity at the local level in 10 Sub-Saharan countries, disaggregated into 1136 administrative entities. This work combines nighttime lights data and a unique set of population censuses to produce local measures of growth, employment and sectoral shares. We find evidence of unconditional convergence across sectors in the range of 2\%. However, convergence is heterogeneous and conditional on both manufacturing and services employment shares. Convergence is also associated with proximity to the main city, moderate population density, low land suitability and relatively moderate temperature. Lastly, the within effect dominates the between effect
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
Dette des ménages et instabilité financière
No full textCet article développe un modèle d’une économie de type Keynes-Goodwin avec des ménages qui s’endettent pour acquérir des biens immobiliers. Il permet d’identifier au travers de quels mécanismes l’endettement des ménages modifie le fonctionnement du modèle Keynes-Goodwin, et dans quelle mesure l’endettement des ménages favorise l’émergence de l’instabilité financièreThis paper presents a Keynes-Goodwin model; in which households get mortgages to purchase real estates. This model enables to identify through what mechanisms mortgage debt modifies the baseline Keynes-Goodwin model. This model also enables to understand to what extent mortgage debt produces financial instability
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