Fourier–type tests involving martingale difference processes

We develop testing procedures which detect if the observed time series is a martingale difference sequence. Furthermore, tests are developed that detect change–points in the conditional expectation of the series given its past. The test statistics are formulated following the approach of Fourier–type conditional expectations first proposed by Bierens (1982 Bierens, H. J. (1982). Consistent model speci?cation tests. J. Econometr. 20:105–134.[Crossref], [Web of Science ®] , [Google Scholar]) and have the advantage of computational simplicity. The limit behavior of the test statistics is investigated under the null hypothesis as well as under alternatives. Since the asymptotic null distribution contains unknown parameters, a bootstrap procedure is proposed in order to actually perform the test. The performance of the bootstrap version of the test is compared in finite samples with other methods for the same problem. A real–data application is also included.     

The Role of Migration Policy Changes in Europe for Return Migration to Senegal

This study questions the role of migration policy changes in France, Italy, and Spain for return migration to Senegal, by analyzing biographic data from the Migration between Africa and Europe (MAFE‐Senegal) survey and the contextual data of the Determinants of International Migration (DEMIG) VISA and DEMIG POLICY databases that cover major changes in migration policies in these destination countries for the different categories of migrants. Event history logistic regressions reveal that Senegalese migrants are less likely to return when the entry restrictions have become tighter. This result suggests that the decision to return depends on the possibility of migrating again after the return, which is crucial for both theory and policy regarding Western democracies' attempts to regulate migration.     

Special education disproportionality in the United States,Germany, Kenya,and India

Disproportionality in special education includes the underrepresentation and overrepresentation of children by gender, economic status, race, ethnicity, language, and culture. This article reviews literature on disproportionality in the United States, Germany, Kenya, and India. Societal views of disability, classism, racism, and inequitable assessment are among the factors that contribute to disproportionality. Preventative medicine, equitable access to resources, ethical and effective assessment procedures, and educational practices that are gender equitable and culturally responsive may reduce the problem of disproportionality.     

« Le plafond de verre dans tous ses éclats ». La féminisation des professions supérieures au xx siècle

The metaphor of the glass ceiling helps one to focus on the often invisible barriers qualified women have to deal with, in order to access to the highest professional positions. This article presents the set of contributions, which clarifies the evolution of this phenomenon in various professions and in various countries. It gives one a more dynamic and less linear view on the top job feminization throughout the 20th century.     

Children’s Strategies for Agency in Preschool

This article is based on an ethnographic study of children’s everyday life in Swedish preschools. The ethnography is used to explore children’s strategies for influencing, defending and constructing the social order of a preschool institution. The focus of our concern is on how the children, in their interactions with each other and with the preschool teachers, manage the collective regulation and how they negotiate their participation in collective activities. There is an inherent tension between free play and the high degree of routinised and collective activities within the preschool institution. The study shows that children are active in playing at the border, acting as if the institution is the children’s place. It also shows how they draw on different strategies as resources for managing the regulations, accounting for personal autonomy and negotiating the social order. In taking a child perspective and acknowledging children as active agents, it is possible to see how they influence and shape their everyday life in a preschool context. In addition, the article illustrates individual children’s strategic and pragmatic use of resources and in doing so contribute to their own childhood and thereby become part of a social and cultural construction process.     

Anthropological Theories of Low-Wage Work

This review assesses the use of anthropological theories in the examination of low-wage work. Due to the vast differences existing between different cultures in low-wage work, this review focuses on theories that have been applied in Western, and mainly American, contexts. There are primarily three fields from which this literature is drawn: economic anthropology, gender and race anthropology, and theories of power—the last integrates all these theories. Differences and controversies over the applicability of these theories are also highlighted. The review concludes with a conceptual map describing the interrelatedness of these theories and how they explain the realities of low-wage workers.     

Emotional impacts of environmental decline: What can Native cosmologies teach sociology about emotions and environmental justice?

This article extends analyses of environmental influences on social action by examining the emotions experienced by Karuk Tribal members in the face of environmental decline. Using interviews, public testimonies, and survey data we make two claims, one specific, the other general. We find that, for Karuk people, the natural environment is part of the stage of social interactions and a central influence on emotional experiences, including individuals’ internalization of identity, social roles, and power structures, and their resistance to racism and ongoing colonialism. We describe a unique approach to understanding the production of inequality through disruptions to relationships among nature, emotions, and society. Grief, anger, shame, and hopelessness associated with environmental decline serve as signal functions confirming structures of power. The moral battery of fear and hope underpins environmental activism and resistance. More generally, we expand this concern to argue that neglecting the natural world as a causal force for “generic” social processes has limited not only work on Native Americans, but also work sociology of emotions and theories of race and ethnicity, and has masked the theoretical significance of environmental justice. Taking seriously the experiences of Native people and the importance of the natural environment offers an opportunity to extend sociological analyses of power and to move sociology toward a more decolonized discipline.     

A four factor model predicting likelihood of foster carer retention

This study used a self‐report method to test a conceptual model for predicting the likelihood of retention of foster carers for children requiring out‐of‐home care. It was hypothesized that satisfaction levels of foster carers would be determined by locus of control and social support, and that the decision to stay or leave fostering within the next 18 months would be influenced by foster carer satisfaction, and commitment to a child/ren in care. Participants were 185 Queensland foster carers. Results supported the proposed model. Logistic regression analysis revealed that an increase in either satisfaction or commitment would result in foster carers being more likely to decide to stay in fostering. Multiple regression analysis found that both locus of control and social support made a significant contribution to the prediction of carer satisfaction. The findings were further supported by qualitative data. Implications of the findings are discussed.     

Quantitative Risk Assessment of Listeria monocytogenes in French Cold-Smoked Salmon: II. Risk Characterization

A model for the assessment of exposure to Listeria monocytogenes from cold-smoked salmon consumption in France was presented in the first of this pair of articles (Pouillot et al ., 2007, Risk Analysis, 27:683–700). In the present study, the exposure model output was combined with an internationally accepted hazard characterization model, adapted to the French situation, to assess the risk of invasive listeriosis from cold-smoked salmon consumption in France in a second-order Monte Carlo simulation framework. The annual number of cases of invasive listeriosis due to cold-smoked salmon consumption in France is estimated to be 307, with a very large credible interval ([10; 12,453]), reflecting data uncertainty. This uncertainty is mainly associated with the dose-response model. Despite the significant uncertainty associated with the predictions, this model provides a scientific base for risk managers and food business operators to manage the risk linked to cold-smoked salmon contaminated with L. monocytogenes. Under the modeling assumptions, risk would be efficiently reduced through a decrease in the prevalence of L. monocytogenes or better control of the last steps of the cold chain (shorter and/or colder storage during the consumer step), whereas reduction of the initial contamination levels of the contaminated products and improvement in the first steps of the cold chain do not seem to be promising strategies. An attempt to apply the recent risk-based concept of FSO (food safety objective) on this example underlines the ambiguity in practical implementation of the risk management metrics and the need for further elaboration on these concepts.