Sequential estimation of a location parameter from delayed observations

The problem of sequentially estimating a location parameter is considered in the special case when the data arrive at random times. Certain classes of sequential estimation procedures are derived under a location invariant loss function and with the observation cost determined by a function of the moment of stopping and the number of observations up to this moment.     

From emigrants to free movers: whither European emigration and diaspora policy?

This article examines the level of convergence in the field of emigration and diaspora policies of the European Union Member States. The analysis of policies of 28 states shows that the convergence of emigration and diaspora policies is more pronounced in the area of intra-EU mobility. Moreover, EU states tend to apply territorial limitations to their emigration and diaspora policies. Therefore, it might be expected that future convergence will concern only the EU core. The most developed area of intervention of the individual EU Member States is heritage promotion, but it predates the EU and is a derivative of the historical emigration from Europe. Today, considering the diversity of EU emigrants, traditional heritage promotion is challenging, both on the national and EU level.     

Women’s Job Quality Across Family Life Stages: An Analysis of Female Employees Across 27 European Countries

There is little empirical evidence on how working conditions affect women’s employment and fertility choices, despite a number of studies on the impact of individual-level and institutional factors. The article addresses this gap by examining how family life stages are related to particular aspects of job quality among employed women in 27 European countries. The central argument of the analysis is that high-quality jobs are conducive to both transitions to motherhood and employment after childbirth as women select into these roles. Accordingly, mothers of young children, if employed, are expected to have relatively better quality jobs. Four dimensions of job quality are considered: job security, career progression, working time and intrinsic job quality. The results indicate that mothers with young children are more likely to hold high-quality jobs than women at other life stages with respect to working time quality and job security, but with some variation across countries for job security. The findings highlight the importance of high-quality jobs for women’s fertility decisions and labour market attachment after childbirth, with implications for European employment policy.     

Robust estimation in the multivariate normal model with variance components

Fisher consistent and Fréchet differentiable statistical functionals have been already used by Bednarski and Zontek [Robust estimation of parameters in a mixed unbalanced model. Ann Statist. 1996;24(4):1493–1510] to get a robust estimator of parameters in a two-way crossed classification mixed model. This way of robust estimation appears also in the variance components model with a commutative covariance matrix [Zmy?lony, Zontek. Robust M-estimator of parameters in variance components model. Discuss Math Probab Stat. 2002;22:61–71]. In this paper it is shown that a modification of this method does not involve any assumptions about commutation of covariance matrix. The theoretical results have been completed with computer simulation studies. Robustness of considered estimator and possibility of approximation of the estimator's distribution with some multivariate normal distribution for both model and contaminated data have been confirmed there.     

Gendered,Invisible Work in Non‐profit Social Service Organizations: Implications for Worker Health and Safety

Nonprofit organizations (NPOs) play an important role in the provision of health and social services. In Canada the nonprofit sector includes 7.5 million volunteers and employs over 1.6 million paid workers. The sector is overwhelmingly female‐dominated — women make up over 80 per cent of workers in these nonprofit services. Work performed by women has traditionally been undervalued and invisible. It has often been considered safe by researchers, employers, policymakers and sometimes even workers themselves. Although there is some indication that jobs in the restructuring social services sector can be characterized by constant demand, high stress and violence, research into the working conditions and health hazards of these types of jobs has not been a priority. Using data from a qualitative study examining work in NPOs, we trace the ways that work performed in these workplaces is both gendered and invisible. We identify three types of invisible labour. ‘Background work’ facilitates and supports more visible and recognized organizational activities. Certain organizational language obscures the full spectrum of work that takes place in the organizations and the risks it may involve. ‘Empathy work’ includes the relationship building, counselling and crisis intervention that comprise key components of social service delivery. ‘Emotional labour’ involves the management of client emotions and workers' own emotions in the process of working with clients and delivering care under conditions of scarcity and contraction. The invisibility of these activities means that much of the day‐to‐day work done in the organizations, while particularly important in the context of social service restructuring, is taken‐for‐granted and undervalued by organizational outsiders. As a result, many of the hazards present in the jobs are hidden from view and workers' health may be compromised. We argue that the invisibility and taken‐for‐grantedness of certain types of work in NPOs is reflected in, and constitutive of, particular exclusions and shortcomings of current occupational health and safety systems designed to protect the health of workers.     

Reforms of the Common Agricultural Policy of the EU: Expected results and their social acceptance

The Common Agricultural Policy of the European Union (CAP) is one of the oldest and most controversial of the UE policies. Different possible scenarios of the future reforms of the CAP are currently being discussed. They vary in terms of the extent and the type of the intervention and consequently the welfare effects for different social groups. The objective of this paper is to demonstrate that the partial equilibrium model (CAPRI) and the Theory of Moves (TOM) can be jointly used to test socio-political acceptance of the CAP’s reforms, informing subsequent changes to the policy. Our exemplary results demonstrate that liquidation of the first pillar of the CAP would negatively influence the socio-political acceptance of the CAP.     

Measuring influence in command games

In the paper, we study a relation between command games proposed by Hu and Shapley and an influence model. We show that our framework of influence is more general than the framework of the command games. We define several influence functions which capture the command structure. These functions are compatible with the command games, in the sense that each commandable player for a coalition in the command game is a follower of the coalition under the command influence function. Some of the presented influence functions are equivalent to the command games, that is, they are compatible with the command games, and additionally each follower of a coalition under the command influence function is also a commandable player for that coalition in the command games. For some influence functions we define the equivalent command games. We show that not for all influence functions the compatible command games exist. Moreover, we propose a more general definition of the influence index and show that under some assumptions, some power indices, which can be used in the command games, coincide with some expressions of the weighted influence indices. Both the Shapley–Shubik index and the Banzhaf index are equal to a difference between the weighted influence indices under some influence functions, and the only difference between these two power indices lies in the weights for the influence indices. An example of the Confucian model of society is broadly examined. The authors wish to gratefully thank two anonymous referees for useful suggestions concerning this paper.     

On robust Bayesian estimation under some asymmetric and bounded loss function

The problem of Bayesian and robust Bayesian estimation with some bounded and asymmetric loss function ABL is considered for various models. The prior distribution is not exactly specified and covers the conjugate family of prior distributions. The posterior regret, most robust and conditional Γ-minimax estimators are constructed and a preliminary comparison with square-error loss and LINEX loss is presented.