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111.
Asunción Martínez-Martínez Manuel Castro-Sánchez Sonia Rodríguez-Fernández Félix Zurita-Ortega Tamara Espejo-Garcés 《Revista de Psicología Social》2018,33(1):111-141
This study aims to establish and verify an explanatory model for aggressive behaviour, self-esteem, victimization and physical activity in adolescents, and to use this explanatory model to analyse the association of place of residence with these variables. This research analysed 2,273 adolescents from the province of Granada (Spain) using the questionnaires Violent Behaviour at Schools, School Victimization Scale and Global Self-Esteem Scale. An analysis was carried out using structural equations. Results showed that relational and overt aggressiveness are related to self-esteem, victimization and physical activity. Furthermore, relational aggressiveness showed a stronger association with victimization and low self-esteem in adolescents who live in residential care. In addition, overt aggressiveness showed a stronger association with self-esteem in adolescents who live in family homes. Thus, exclusion and social rejection among peers have a greater impact on the victimization of young people who live outside of the family context. 相似文献
112.
A weighted bootstrap approximation for comparing the error distributions in nonparametric regression
Gustavo I. Rivas Martínez 《Journal of Statistical Computation and Simulation》2017,87(18):3503-3520
Several procedures have been proposed for testing the equality of error distributions in two or more nonparametric regression models. Here we deal with methods based on comparing estimators of the cumulative distribution function (CDF) of the errors in each population to an estimator of the common CDF under the null hypothesis. The null distribution of the associated test statistics has been approximated by means of a smooth bootstrap (SB) estimator. This paper proposes to approximate their null distribution through a weighted bootstrap. It is shown that it produces a consistent estimator. The finite sample performance of this approximation is assessed by means of a simulation study, where it is also compared to the SB. This study reveals that, from a computational point of view, the proposed approximation is more efficient than the one provided by the SB. 相似文献
113.
In this article, we introduce a new extension of the Birnbaum–Saunders (BS) distribution as a follow-up to the family of skew-flexible-normal distributions. This extension produces a family of BS distributions including densities that can be unimodal as well as bimodal. This flexibility is important in dealing with positive bimodal data, given the difficulties experienced by the use of mixtures of distributions. Some basic properties of the new distribution are studied including moments. Parameter estimation is approached by the method of moments and also by maximum likelihood, including a derivation of the Fisher information matrix. Three real data illustrations indicate satisfactory performance of the proposed model. 相似文献
114.
M. I. Borrajo W. González-Manteiga M. D. Martínez-Miranda 《Journal of nonparametric statistics》2017,29(3):636-668
Length-biased data are a particular case of weighted data, which arise in many situations: biomedicine, quality control or epidemiology among others. In this paper we study the theoretical properties of kernel density estimation in the context of length-biased data, proposing two consistent bootstrap methods that we use for bandwidth selection. Apart from the bootstrap bandwidth selectors we suggest a rule-of-thumb. These bandwidth selection proposals are compared with a least-squares cross-validation method. A simulation study is accomplished to understand the behaviour of the procedures in finite samples. 相似文献
115.
Helena Viljoen 《统计学通讯:模拟与计算》2017,46(9):6865-6878
The problem of forecasting a time series by using information provided by a second time series is considered. Two multivariate extensions of Singular Spectrum Analysis (SSA) are compared in terms of forecast error: Horizontal Multi-channel SSA and Stepwise Common SSA. Different signal structures, defined in terms of trend, period, amplitude and phase, are investigated. In broad terms we find that neither Horizontal Multichannel SSA nor Stepwise Common SSA is best in all cases. Horizontal MSSA is outperformed particularly in cases where different trends are considered. 相似文献
116.
Francisco Miguel Martínez-Rodríguez María de los Ángeles Vilches Norat Alfonso Fernández-Herrería 《Globalizations》2018,15(3):422-436
The neoliberal rationality of recent decades has, as one of its maxims, that of extending market logic to the rest of social dimensions on the basis of competition. However, the spreading of this neoliberal ‘drug’ requires profound political reforms. It calls for a cultural engineering of the public sector which has been fostered by the New Public Management (NPM). This form of governmentality controls current power relations and gives a new meaning to the management of public services, including the educational sector. In this paper, we maintain that there are ‘spaces of resistance’ against the neoliberal educational rationality. We analyse the Center for Ecoliteracy (CFE) as a transformative experience which integrates a holistic perspective into educational practice. We compare the principles of the NPM with those of the CFE, showing that there are more humanistic approaches to education which aim to teach students the need to live in sustainable communities. 相似文献
117.
Helen L. McLachlan Della A. Forster Sue Kildea Jane Freemantle Jennifer Browne Jeremy Oats Michelle Newton Marika Jackomos Jacqueline Watkins Simone Andy Sue Jacobs Ngaree Blow Karyn Ferguson Catherine Chamberlain Susan Donath Lisa Gold Helena Maher Jenny Ryan Pam McCalman 《Women and birth : journal of the Australian College of Midwives》2017
118.
Socioemotional wealth’s implications in the calculus of the minimum rate of return required by family businesses’ owners 总被引:1,自引:1,他引:0
This paper demonstrates that the minimum rate of return (k e ) required by family business shareholders is inversely related to the emotional endowment presented in these firms. After reviewing the socioemotional wealth (SEW) literature, we find empirical support to justify that different SEW dimensions influence k e . Findings from a population of 207 family firms show that the identification of family members with the firm and the renewal of family bonds with the firm through dynastic succession have consistently negative impacts on k e , while family control and influence have significantly positive impacts on k e . 相似文献
119.
120.
This article will review the processes of professionalization of social work in Spain. With the advent of democratic Spain, many professions began a process of transformation. Those rooted in the relationship between the citizens, their rights and obligations, and the state, were among the first to be challenged. Social work was one of them. Soon thereafter, the European Union (EU), which Spain joined in 1986, brought forth greater challenges and incentives to change. In 1999, Spain and 29 other countries signed the Bologna Declaration, which committed the country to the development of a shared domain (often referred to as ‘espacio común’) with European higher education. This article reviews the historical process of insertion of social work, heavily influenced by the Catholic tradition of caring, into the universities. The paper examines the model of social work education in Spain, before and during Franco's era, and the professionalization (sometimes referred to as ‘tecnificación’) of care-giving and training-paradigms that followed the advent of democracy. Current models and efforts to bring Spanish social work into EU compliance have narrowed the gap with the Anglo-Saxon world; but have they distanced social work in Spain from its roots? 相似文献