Simulating from Exchangeable Archimedean Copulas

This article considers identifying the existence of the local likelihood estimator in binary regression. A simple method for the identification is proposed, which is derived by recognizing the problem as a linear complementarity problem through a support vector machine problem with soft margins.     

A flexible and tractable class of one-factor copulas

Copulas are a useful tool to model multivariate distributions. While there exist various families of bivariate copulas, the construction of flexible and yet tractable copulas suitable for high-dimensional applications is much more challenging. This is even more true if one is concerned with the analysis of extreme values. In this paper, we construct a class of one-factor copulas and a family of extreme-value copulas well suited for high-dimensional applications and exhibiting a good balance between tractability and flexibility. The inference for these copulas is performed by using a least-squares estimator based on dependence coefficients. The modeling capabilities of the copulas are illustrated on simulated and real datasets.     

Communicating with parents

It is difficult to help a child whose parents are unavailable to the professional working with the child. Parents whose children have problems tend to be fearful of being judged and criticized. Anger or expressions of guilt may mask their fears about their own inadequacies and problems. All parents need to be listened to and understood before professionals can help the children. Communicating this understanding to the parents requires more than works. Listening, enabling parents to talk and talking with parents often needs to be supplemented by actions concrete services and even by play to enable the parents to trust enough to want to learn how to be better parents. Foster parents must also be drawn into a cooperative effort to help children in their care.This is an excerpt from the bookWork With Children to be published by Human Sciences Press in February 1979. This selection deals with communicating with parents, for until that is accomplished, there is no chance to communicate with children.     

Global production and local jobs: can global enterprise networks be used as levers for local development?

This article is developed out of a research project on ‘Global Production and Local Jobs’ launched by the International Institute for Labour Studies of the International Labour Organization (ILO). It identifies salient features of global production networks in the automobile, electronics and apparel industries, and discusses their implications for local industrial upgrading, jobs and development policy. The approach combines in novel forms complementary analytical frameworks such as the global value chain and industrial district perspectives, in order to highlight interactions between global and local forces in the operation of transnational production networks. Central issues revealed by this approach include: the rise of entry barriers into the most profitable, service‐intensive activities of global value chains, that reduce small firms' prospects for industrial upgrading; the uneven benefits derived from participation in global production networks at the local level; and the need for local institutions to devise policy responses through a flexible, network‐oriented approach involving a broad local constituency.     

Trajectories of Breadth of Participation in Organized Activity During Childhood

This study aimed to identify the trajectories of breadth of participation in organized activities during childhood and to examine the predictors of membership in these trajectories (child's individual and family characteristics measured in Kindergarten). A sample of 1038 children, recruited in Kindergarten, was assessed yearly between Kindergarten and grade 4. Semiparametric group‐based modeling brought out four trajectories: the no participation group (13.5 percent), the increasing group (26.4 percent), the decreasing group (14.1 percent), and the high group (46.1 percent). Prosociality predicted membership in the no participation group, as compared with the increasing group. Social withdrawal predicted membership in the no participation group, as compared with the high group. High family income and higher maternal education predicted membership in the increasing, decreasing, and high trajectory groups, as compared with the no participation group. Higher paternal education predicted membership in the high group, as compared with the increasing group. Overall, family variables had a greater impact than individual variables on the probability that the child would participate in a broader range of organized activities.     

The Correlations of Work Conditions with Unhealthy Lifestyles and Occupational Health Problems of Casino Croupiers in Macau

The Macau economy and employment of residents rely heavily on the gaming industry. It is important that the working conditions in casinos are not harmful to the health of the casino employees. This study examines the correlations between work conditions, unhealthy lifestyles and occupational health problems amongst casino croupiers in Macau. Its findings will provide casino managers and policy makers with evidence and awareness of the workplace health risks for the casino workers. The data were gathered by a questionnaire survey of 1,042 croupiers, which represents roughly 5 % of the croupier population in Macau. Work conditions were measured by worker satisfaction towards the biological, chemical and physical elements in their work environments. Unhealthy lifestyles were measured by practices of excessive drinking, smoking, electronic game playing and addictive substance use as well as gambling. Occupational health problems were measured by experiences of work related illnesses or symptoms. Results showed that high percentages of respondents were dissatisfied with the work conditions. On average each croupier experienced 10 work related health problems in the past 7 days. Over 5 % of the respondents drank more than three glasses of alcohol a day, 24 % smoked cigarettes, 12 % took addictive substances, 14 % gambled in the past 7 days. The analysis showed that dissatisfaction with work conditions did not correlate with unhealthy lifestyles but were strongly and significantly correlated with stress-related occupational health problems (R = 0.377–0.479, P < 0.001) and other occupational health problems (R = 0.348–0.461, P < 0.001). Casino workers in Macau experience a variety of problems associated with their work conditions that can be hazardous to their health. The working conditions in casinos need to be regularly monitored and improvements such as occupational health training and enhanced health related policies can be introduced.