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11.
Raffaella Piccarreta Orna Lior 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2010,173(1):165-184
Summary. Sequence analysis has become one of the most used and discussed tools to describe life course trajectories. We introduce a new tool for the graphical exploratory analysis of sequences. Our plots combine standard sequence plots with the results that are provided by multi-dimensional scaling. We apply our procedure to describe work and family careers of Israeli women by using data from the Israel Social Mobility Survey. We first focus on some preliminary choices relative to the definition of the sequences: the age span, the length of the sequences and the set of states registered in each time period. We then describe how our plots can be used to gain insights about the main features of sequences and about the relationships between sequences and external information. 相似文献
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Arnstein Aassve Francesco C. Billari Raffaella Piccarreta 《Revue europeenne de demographie》2007,23(3-4):369-388
Employment, union formation and childbearing are central processes within young individuals’ transition to adulthood. These processes interact in highly complex ways, and they shape actual life-course trajectories that may be seen as a conceptual unit. In this article we use a methodology to cluster life-course experiences, where all three processes are embedded explicitly, in order to study young women’s trajectories in Great Britain. Drawing on a sample from the British Household Panel Survey (BHPS), we define life-courses as sequences on a monthly time scale and we apply optimal matching analysis to compute dissimilarities between individuals. We then use standard clustering algorithms and we identify nine distinctive groups of women. Our results are then shown using a new representation of clusters and interpreted in the light of the existing socio-demographic literature on the dynamic work-family link. 相似文献
13.
Raffaella Piccarreta 《Journal of applied statistics》2001,28(1):107-120
A new measure for evaluating the strength of the association between a nominal variable and an ordered categorical response variable is introduced. The introduction of a new measure is justified by analysing the characteristics of a measure of the nominal-ordinal association proposed by Agresti (1981), especially with respect to the problem of the 'choice' of a predictive variable. The sample-based version of the index is studied, and its asymptotic standard error and asymptotic distribution are derived. Simulations are considered to evaluate the adequacy of the asymptotic approximation determined, following Goodman & Kruskal (1963). 相似文献
14.
The purpose of this study is to investigate the relationship between the use of temporary workers and the adoption of new forms of work organisation (NFWO) in production. This study aims to understand to what extent these two forms of human resources flexibility are synergic or mutually exclusive. In order to answer this main goal, we discuss different levels of temporary workers adoption in relation to different levels of use of NFWO, the level of integration of temporary workers within the overall production organisation and the joint and synergistic use of NFWO and temporary work. Evidence drawn from seven case studies in manufacturing plants in northern Italy is provided. Results highlight that, according to the characteristics of the production process, temporary workers and NFWO are not mutually exclusive, that temporary workers can be integrated with other workers in the shop floor, and that NFWO can also be adopted for temporary workers. In addition, NFWO has been proven to be a key enabler to integrate temporary workers within the organisation, thus showing an important synergistic effect between the two human resource flexibility practices. 相似文献
15.
Raffaella Piccarreta Francesco C. Billari 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2007,170(4):1061-1078
Summary. We present an approach to the construction of clusters of life course trajectories and use it to obtain ideal types of trajectories that can be interpreted and analysed meaningfully. We represent life courses as sequences on a monthly timescale and apply optimal matching analysis to compute dissimilarities between individuals. We introduce a new divisive clustering algorithm which has features that are in common with both Ward's agglomerative algorithm and classification and regression trees. We analyse British Household Panel Survey data on the employment and family trajectories of women. Our method produces clusters of sequences for which it is straightforward to determine who belongs to each cluster, making it easier to interpret the relative importance of life course factors in distinguishing subgroups of the population. Moreover our method gives guidance on selecting the number of clusters. 相似文献
16.
Raffaella Pagogna Patrick Sakdapolrak 《International migration (Geneva, Switzerland)》2023,61(5):142-155
Migration-information campaigns informing potential migrants about the risks of the journey and the harsh life conditions in the destination countries have emerged as prominent tools of migration management in the last decades. Despite their growing importance, little is known about their local implementation in countries of transit and origin as well as their influence on potential migrants' perceptions and experiences. The central objective of this paper is to understand how migration-information campaigns are implemented on a local scale and how they shape the perception and discourses of migration in the region. We pursue a multi-scalar analysis of international migration management policies and their outcomes in a specific place and link them with local migration aspirations. The paper is based on qualitative empirical research carried out in Harar, a medium-sized city in the Harari regional state of Ethiopia. Drawing on interviews with government officials, NGOs, city dwellers, and return migrants, as well as the analysis of policy documents and scientific literature, we show how the local implementation of migration-information campaigns shapes the local perceptions and discourses on migration within which migration aspirations are embedded. We found that information campaigns did not take into account the complexity and multifaceted nature of local socioeconomic and political conditions which reflects the discrepancy between policy discourses at large and people's perceptions. 相似文献
17.
Journal of Family and Economic Issues - Persistently low employment of women in some countries can still be ascribed to a traditional perception of women’s role in society. According to... 相似文献
18.
Clara Valls-Vidal Carles Pérez-Testor Joan Guardia-Olmos Raffaella Iafrate 《Journal of divorce & remarriage》2013,54(8):491-507
The aim of this work was the psychometric study of six scales designed to assess the familial relationships of young adult children of separated parents. The analyzed constructs are interparental conflict, loyalty conflict, coalition, parentification, children's perceptions of the parent–child relationships, and young adult perception of the separation–individuation process. Internal consistency and factorial validity was studied through a sample of 535 Spanish young adults from disrupted and nondisrupted families who were between 20 and 30 years old. The confirmatory factor analyses showed a certain acceptability of the original structures of all scales, with Bentler–Bonett Nonnormed Fit Index, Bentler–Bonett Normed Fit Index, and comparative fit indexes above .90 in all cases, and root mean square error of approximation below .05 in the multifactorial scales and slightly higher in the unifactorial ones. The internal consistency values were between .89 and .94 in the unifactorial scales, and between .70 and .92 in the multifactorial ones. The estimations found for the factor saturation supported the acceptability of the original structures. It is concluded that all the scales within this set present acceptable properties, in terms of dimensionality and internal consistency. The limitations are pointed out. 相似文献
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