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61.
Stefano Tartaglia 《Social indicators research》2013,113(3):1045-1053
The present study aimed at comparing the effects of different sets of predictors on quality of life in an urban environment. We used secondary data collected by means of a self-report questionnaire on a sample of 343 residents of a big Italian city. The questionnaire included a multidimensional scale elaborated by the World Health Organization (WHOQoL brief scale) assessing quality of life in terms of four different evaluations concerning distinct aspects of life: physical health; psychological status; social relationships; environment. Four different types of predictors were considered: (1) socio-demographic characteristics; (2) quality of social relations (perceived social support); (3) place attachment; (4) healthy lifestyle. To test the influence of different groups of predictors on the dimensions of WHOQoL we performed four hierarchical regression analyses. Several significant influences were found. In particular the results pointed out the great role of perceived social support and place attachment in promoting quality of life. That result suggests the importance of community interventions in urban environment. 相似文献
62.
In this study, we present a generalization of spatial power indexes able to overcome their main limitations, namely (i) the excessive concentration of power measures; (ii) the too high sensitivity to players’ location in the ideological space. Voters’ propensity to support an issue is modeled via a random utility function with two additive terms: the deterministic term accounts for voters’ preference-driven/predictable behavior; the random one is a catch-all term that accounts for all the idiosyncratic/unpredictable factors. The relative strength of the two terms gives rise to a continuum of cases ranging from the Shapley value, where all aggregation patterns are equally probable, to a standard spatial value, like the Owen–Shapley index, where instead the conditional order is fully deterministic. As an illustrative application, we analyze the distribution of power in the Council of Ministers under three different scenarios: (i) EU15 Pre-Nice; (ii) EU27 Nice Treaty; (iii) EU27 Lisbon Treaty. 相似文献
63.
Social Indicators Research - The UN Sustainable Development Goals have set clear targets on global poverty, hunger and malnutrition to be achieved by 2030, which have prompted academics and... 相似文献
64.
This paper analyses both theoretically and empirically the effects of immigration on the wage rate of native workers. There is rare evidence in empirical literature that immigration generates a fall in the wages of manual workers. By hypothesizing an economic system where advanced firms buy an intermediate good from traditional firms, which employ manual workers in both clean and dirty tasks, the latter being more disliked by native workers, we present a theoretical model that justifies these results. We conclude that native skilled wages always increase whereas native unskilled wages can both increase or decrease with immigration. An empirical analysis of the Italian labour market follows, showing that native workers' wages always rise with immigration. 相似文献
65.
Thirty-three years ago Islamic banking was considered wishful thinking. However, serious research over the past two-and-a-half
decades has shown that Islamic banking is not only feasible and viable, but is an efficient and productive way of financial
intermediation. A number of Islamic banks have also been established during this period in Jordan. The objective of this paper
is to examine the structure and performance of the Islamic banking industry in Jordan during the period 2000–2006. We find
that the Jordanian Islamic banking industry is still in its infancy compared to a number of countries in the region and there
is a growth trend in the financial services market, despite its current concentration and limited size. 相似文献
66.
Alessandra Rosalba Brazzale Alberto Salvan Stefano Roletti 《Journal of the Royal Statistical Society. Series C, Applied statistics》2004,53(2):261-278
Summary. The paper describes how to use hierarchical models to assess the reliability of and agreement between two or more types of measurement device. The idea is illustrated by fitting a linear model with nested random effects to a set of data that was obtained from the calibration of two samples of extremely low frequency magnetic field meters. The paper focuses on the formulation of a suitable model that accounts for the various aspects of the calibration protocol and the subsequent interpretation of the parameter estimates. The approach is very flexible and can easily be tuned to the various needs arising in the measurement agreement framework. It can be seen as an extension of the common practice of using a one-way random-effects model to retrieve a measure of agreement. 相似文献
67.
A method for constructing asymmetrical (mixed-level) designs, satisfying the balancing and interaction estimability requirements with a number of runs as small as possible, is proposed in this paper. The method, based on a heuristic procedure, uses a new optimality criterion formulated here. The proposed method demonstrates efficiency in terms of searching time and optimality of the attained designs. A complete collection of such asymmetrical designs with two- and three-level factors is available. A technological application is also presented. 相似文献
68.
The generalized Pareto distribution is used to model the exceedances over a threshold in a number of fields, including the analysis of environmental extreme events and financial data analysis. We use this model in a default Bayesian framework where no prior information is available on unknown model parameters. Using a large simulation study, we compare the performance of our posterior estimations of parameters with other methods proposed in the literature. We show that our procedure also allows to make inferences in other quantities of interest in extreme value analysis without asymptotic arguments. We apply the proposed methodology to a real data set. 相似文献
69.
70.
Learning and interaction in groups with computers: when do ability and gender matter? 总被引:1,自引:0,他引:1
In the research reported in this article, we attempt to identify the background and process factors influencing the effectiveness of groupwork with computers in terms of mathematics learning. The research used a multi-site case study design in six schools and involved eight groups of six mixed-sex, mixed-ability pupils (aged 9–12) undertaking three research tasks – two using Logo and one a database. Our findings suggest that, contrary to other recent research, the pupil characteristics of gender and ability have no direct influence on progress in group tasks with computers. However, status effects – pupils' perceptions of gender and ability – do have an effect on the functioning of the group, which in turn can impede progress for all pupils concerned. 相似文献