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71.
Marisa Ferrari Occhionero 《International Review of Sociology》2009,19(1):155-169
Despite the increase in, and focus on, gender equality in European debate – along with a substantial amount of policy initiatives and legal regulations – gender equality in the workplace and in careers is still some way off. In order to see the magnitude of the gap between women and men in European countries we have considered some significant domains such as the economy (employment structure and occupational segregation), education (educational attainment) and politics (political empowerment). The article aims to present data demonstrating that the employment structure in the EU, even in those countries where women have achieved high employment rates, still suffers from segregation, both ‘horizontally’ and ‘vertically’; and to single out some ‘weak signals’ but with a strong potential for social change and some indicators for social alternatives for the future. 相似文献
72.
AStA Advances in Statistical Analysis - We introduce and study the Box–Cox symmetric class of distributions, which is useful for modeling positively skewed, possibly heavy-tailed, data. The... 相似文献
73.
Skewed and fat-tailed distributions frequently occur in many applications. Models proposed to deal with skewness and kurtosis
may be difficult to treat because the density function cannot usually be written in a closed form and the moments might not
exist. The log-Dagum distribution is a flexible and simple model obtained by a logarithmic transformation of the Dagum random
variable. In this paper, some characteristics of the model are illustrated and the estimation of the parameters is considered.
An application is given with the purpose of modeling kurtosis and skewness that mark the financial return distribution.
相似文献
74.
Summary In this note we deal with some admissibility conditions proved by G. B. Tranquilli to be sufficient in the class of unbiased
estimators of finite population parameters and with respect to (w.r.t.) a quadratic loss function. We show that the same conditions:i) are sufficient for the admissibility of an unbiased estimator with any loss function;ii) imply hyperadmissibility with reference to a particular (critical) population of the. From this fact we deduce that, for
a fixed critical population, there is at most one estimator, in the class of all unbiased estimator of a finite population
parameter, which satisfies Tranquilli condition.
This research was partially supported by a M.U.R.S.T. grant ?Metodi inferenziali basati sul ricampionamento?. 相似文献
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77.
In this paper we consider a Bayesian nonparametric approach to the analysis of discrete-time queueing models. The main motivation consists in applications to telecommunications, and in particular to asynchronous transfer mode (ATM) systems. Attention is focused on the posterior distribution of the overflow rate. Since the exact distribution of such a quantity is not available in a closed form, an approximation based on “proper” Bayesian bootstrap is proposed, and its properties are studied. Some possible alternatives to proper Bayesian bootstrap are also discussed. Finally, an application to real data is provided. 相似文献
78.
After treatment for substance abuse, whether it is in hospital-based treatment programs, therapeutic communities, or recovery homes, many patients return to former high-risk environments or stressful family situations. Returning to these settings without a network of people to support abstinence increases chances of a relapse. As a consequence, substance abuse recidivism following treatment is high for both men and women. Alternative approaches need to be explored, and there are some promising types of recovery homes. From a public health perspective, a series of studies conducted at DePaul University suggests that one type of recovery home for alcohol abuse recovery has much potential. For example, within this self-help communal living setting, recovering alcoholics were able to maintain employment, thereby reducing their need for government subsidies. Maintaining employment for recovering alcoholics may promote increased personal responsibility, which may impact self-efficacy beliefs. These pilot studies, then, raised both theoretical and practical issues needing further evaluation. 相似文献
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80.
We propose an adaptive procedure for improving the response outcomes of complex combinatorial experiments. New experiment batches are chosen by minimizing the co-information composite likelihood (COIL) objective function, which is derived by coupling importance sampling and composite likelihood principles. We show convergence of the best experiment within each batch to the globally optimal experiment in finite time, and carry out simulations to assess the convergence behavior as the design space size increases. The procedure is tested as a new enzyme engineering protocol in an experiment with a design space size of order 107. 相似文献