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A method is given for quantitatively rating the social acceptance of different options which are the matter of a complete preferential vote. Completeness means that every voter expresses a comparison (a preference or a tie) about each pair of options. The proposed method is proved to have certain desirable properties, which include: the continuity of the rates with respect to the data, a decomposition property that characterizes certain situations opposite to a tie, the Condorcet?CSmith principle, and clone consistency. One can view this rating method as a complement for the ranking method introduced in 1997 by Markus Schulze. It is also related to certain methods of cluster analysis and one-dimensional scaling. 相似文献
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Joseph RAMOS Kirsten SEHNBRUCH Jürgen WELLER 《International labour review / International Labour Office》2015,154(2):171-194
Historically, the development literature concerned with Latin American labour markets has focused on job numbers and productivity. But given the persistence of large shares of informal and now otherwise precarious employment, the authors argue that meaningful analysis also requires consideration of the implications of occupational status for the quality of employment. Based on empirical evidence from recent decades, they conclude that most dimensions of this concept – including social protection – depend on the conclusion of a written contract of employment. This finding leads them to outline policy options for stabilizing formal employment and securing adequate funding for social protection. 相似文献
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In 1992, a package of measures was adopted by the city of Barcelona to obligate riders of motorcycles with a power capacity inferior to 125 cc to use helmets, until then only compulsory for larger motorcycles. Interrupted time series analyses with the use of a control group is used to investigate the effect of these measures on the number of serious injuries and number of deaths. The results indicate a significant decrease in the number of serious cases in the treated group—smaller motorcycles and mopeds—a decrease which does not occur in the control group —larger motorcycles. The impact of the adopted measures is abrupt and permanent but the change in riders helmet wearing habits has not been influenced so much by the media campaign as by the coming into force of the legislation with the potential application of sanctions. 相似文献
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The analysis of word frequency count data can be very useful in authorship attribution problems. Zero-truncated generalized inverse Gaussian–Poisson mixture models are very helpful in the analysis of these kinds of data because their model-mixing density estimates can be used as estimates of the density of the word frequencies of the vocabulary. It is found that this model provides excellent fits for the word frequency counts of very long texts, where the truncated inverse Gaussian–Poisson special case fails because it does not allow for the large degree of over-dispersion in the data. The role played by the three parameters of this truncated GIG-Poisson model is also explored. Our second goal is to compare the fit of the truncated GIG-Poisson mixture model with the fit of the model that results from switching the order of the mixing and truncation stages. A heuristic interpretation of the mixing distribution estimates obtained under this alternative GIG-truncated Poisson mixture model is also provided. 相似文献
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Among the many analytical techniques that have been published to analyze the significance of the effects in the absence of replications, two have emerged as the most widely used in text books as well as statistical software packages: The Lenth's method and the estimation of the variance of the effects from the values of those considered negligible. This article shows that neither is better than the other in all cases, and by analyzing the results obtained in a wide variety of situations it provides guidelines on when it is preferable to use one or the other technique. 相似文献
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Xavier Fonseca Stephan Lukosch Frances Brazier 《Innovation: The European Journal of Social Science Research》2019,32(2):231-253
This paper provides a general overview on different perspectives and studies on social cohesion, offers a definition of social cohesion that is deeply rooted in current literature, and provides a framework that can be used to characterize social cohesion and help support resilient cities. The framework highlights the factors that play a substantial role in enabling social cohesion, and shows from which perspectives it can be fostered. 相似文献
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ABSTRACT The 2008 economic crisis has had particularly negative effects on the youth labour market outcomes in Southern Europe. Thus, it is hardly surprising that many Southern European youngsters see migration as the only way to escape from under-employment and precariousness. In this context, the article studies the reasons for emigration to Mexico of a group of young graduates from Italy and Spain. The paper is based on 42 in-depth semi-structured interviews with young graduates, aged 29 years old or less on their arrival in Mexico. The article first explores the relevance of the economic crisis as the main reason behind the migration of this group. It is revealed that the interviewed graduates had a precarious labour incorporation back in their countries of origin, and migration appeared as a means to further their careers. Second, the paper analyses the interviewees’ labour incorporation in Mexico; in many cases this coincides with an extended university-work transition, since many of them had not secured full-time permanent jobs before their arrival in Mexico. Finally, the paper explores the interviewees’ future plans. These depend not only on their work experiences in Mexico but also on their degree of social and cultural integration in the host country. 相似文献
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Carles Serrat Montserrat Rué Carmen Armero Xavier Piulachs Hèctor Perpiñán Anabel Forte 《Journal of applied statistics》2015,42(6):1223-1239
The paper describes the use of frequentist and Bayesian shared-parameter joint models of longitudinal measurements of prostate-specific antigen (PSA) and the risk of prostate cancer (PCa). The motivating dataset corresponds to the screening arm of the Spanish branch of the European Randomized Screening for Prostate Cancer study. The results show that PSA is highly associated with the risk of being diagnosed with PCa and that there is an age-varying effect of PSA on PCa risk. Both the frequentist and Bayesian paradigms produced very close parameter estimates and subsequent 95% confidence and credibility intervals. Dynamic estimations of disease-free probabilities obtained using Bayesian inference highlight the potential of joint models to guide personalized risk-based screening strategies. 相似文献