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51.
Silvia Gherardi 《Culture and Organization》2015,21(2):174-196
The article illustrates the Italian process of work precarisation and the collective resistance of precarious workers. It interprets them in terms of the birth of a collective identity that conducts a critique against precariousness while developing learning resources. Through discursive analysis of the Serpica Naro catwalk, organised in the area of Milan by the activists of the May Day Parade and the San Precario network, the article illustrates the process of construction of this collective identity that uses irony and playfulness to resist and denounce precarious working conditions. The purpose is to interpret the anti-precariousness movement as a process of critical urban learning that creates the viability of spaces for resistance in metropolitan contexts. 相似文献
52.
Audrey H. M. A. Cysneiros Katya S. P. Rodrigues Gauss M. Cordeiro Silvia L. P. Ferrari 《Statistical Papers》2010,51(2):273-284
We present simple matrix formulae for corrected score statistics in symmetric nonlinear regression models. The corrected score
statistics follow more closely a χ
2 distribution than the classical score statistic. Our simulation results indicate that the corrected score tests display smaller
size distortions than the original score test. We also compare the sizes and the powers of the corrected score tests with
bootstrap-based score tests. 相似文献
53.
In this paper we deal with the issue of performing accurate testing inference on a scalar parameter of interest in structural
errors-in-variables models. The error terms are allowed to follow a multivariate distribution in the class of the elliptical
distributions, which has the multivariate normal distribution as special case. We derive a modified signed likelihood ratio
statistic that follows a standard normal distribution with a high degree of accuracy. Our Monte Carlo results show that the
modified test is much less size distorted than its unmodified counterpart. An application is presented. 相似文献
54.
Silvia Bozza Franco Taroni Raymond Marquis Matthieu Schmittbuhl 《Journal of the Royal Statistical Society. Series C, Applied statistics》2008,57(3):329-341
Summary. The evaluation of handwritten characters that are selected from an anonymous letter and written material from a suspect is an open problem in forensic science. The individualization of handwriting is largely dependent on examiners who evaluate the characteristics in a qualitative and subjective way. Precise individual characterization of the shape of handwritten characters is possible through Fourier analysis: each handwritten character can be described through a set of variables such as the surface and harmonics as demonstrated by Marquis and co-workers in 2005. The assessment of the value of the evidence is performed through the derivation of a likelihood ratio for multivariate data. The methodology allows the forensic scientist to take into account the correlation between variables, and the non-constant variability within sources (i.e. individuals). Numerical procedures are implemented to handle the complexity and to compute the marginal likelihood under competing propositions. 相似文献
55.
56.
Silvia Mendolia 《Review of Economics of the Household》2014,12(2):277-294
The objective of this paper is to examine the impact of job loss on family mental well-being. The negative income shock can affect the mental health status of the individual who directly experiences such displacement, as well as the psychological well-being of his partner; also, job loss may have a significantly detrimental effect on life satisfaction, self-esteem and on the individual’s perceived role in society. This analysis is based on a sample of married and cohabitating couples from the first 14 waves of the British Household Panel Survey. In order to correct for the possible endogeneity of job loss, data from employment histories is utilised and redundancies (different from dismissals) in declining industries are used as an indicator of exogenous job loss. Results show evidence that couples in which the husband experiences a job loss are more likely to experience poor mental health. 相似文献
57.
Laypeople''s and Experts'' Perception of Nanotechnology Hazards 总被引:1,自引:0,他引:1
Michael Siegrist Carmen Keller Hans Kastenholz Silvia Frey Arnim Wiek 《Risk analysis》2007,27(1):59-69
Public perception of nanotechnology may influence the realization of technological advances. Laypeople's (N=375) and experts' (N=46) perception of 20 different nanotechnology applications and three nonnanotechnology applications were examined. The psychometric paradigm was utilized and applications were described in short scenarios. Results showed that laypeople and experts assessed asbestos as much more risky than nanotechnology applications. Analyses of aggregated data suggested that perceived dreadfulness of applications and trust in governmental agencies are important factors in determining perceived risks. Similar results were observed for experts and laypeople, but the latter perceived greater risks than the former. Analyses of individual data showed that trust, perceived benefits, and general attitudes toward technology influenced the perceived risk of laypeople. In the expert sample, confidence in governmental agencies was an important predictor of risks associated with nanotechnology applications. Results suggest that public concerns about nanotechnology would diminish if measures were taken to enhance laypeople's trust in governmental agencies. 相似文献
58.
The paper presents the findings of comparative and interdisciplinary legal and economic study on managing labour redundancies in seven EU member countries. It is structured for comparability between the systems examined. The introductory section contains an account of the evolution of the Italian labour market, with special reference to redundancy trends, of the features of the programmes for managing redundancies, of the roles of firms and the ‘external environment’ in handling workforce adjustments. The second section presents a map of policies that work to prevent labour redundancies (preventive measures) such as flexibility, training etc. Next, the instruments for handling temporary labour redundancies (retentive measures) are examined (e.g. short-time working, temporary layoffs etc.). The following section is devoted to instruments and programmes involved in the management of permanent labour redundancies (expulsive measures), e.g. collective dismissals, severance pay etc. The final section provides an overall assessment of the Italian system for managing labour redundancies, and briefly discusses the national debate on the prospects for reform, in light of the principles and policies of convergence set forth by the European Union. 相似文献
59.
Silvia Bacci 《Journal of applied statistics》2011,38(12):2775-2791
In this paper, a generalization of the two-parameter partial credit model (2PL-PCM) and of two special cases, the partial credit model (PCM) and the rating scale model (RSM), with a hierarchical data structure will be presented. Having shown how 2PL-PCM, as with other item response theory (IRT) models, may be read in terms of a generalized linear mixed model (GLMM) with two aggregation levels, a presentation will be given of an extension to the case of measuring the latent trait of individuals aggregated in groups. The use of this Multilevel IRT model will be illustrated via reference to the evaluation of university teaching by students following the courses. The aim is to generate a ranking of teaching on the basis of student satisfaction, so as to give teachers, and those responsible for organizing study courses, a background of information that takes the opinions of the direct target group for university teaching (that is, the students) into account, in the context of improving the teaching courses available. 相似文献
60.
Social Indicators Research - This study aims to understand the relationship between social structure and morphological character based on a case area... 相似文献