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51.
52.
In the last decades it has been necessary to face emergencies due to big crisis events caused by anthropic and natural events.
In particular modern technological systems have reached such a high level of complexity that even a simple event can influence
correct behavior with potential catastrophic consequences. The security and economy of technologically developed countries
depends on the correct behavior of this infrastructure and on the continuity of the services that they grant. In this framework,
risk management assumes an important role focusing on policies for vulnerability reduction and after-crisis management. It
imposes a multidisciplinary and transnational approach in order to establish a common strategy between different countries,
studying how to be prepared for disasters and prevent disaster damage. In this paper a preliminary analysis of risk categories
is presented, suggesting a number of tentative proposals for risk reduction. 相似文献
53.
The mean residual life of a non negative random variable X with a finite mean is defined by M(t) = E[X ? t|X > t] for t ? 0. A popular nonparametric model of aging is new better than used in expectation (NBUE), when M(t) ? M(0) for all t ? 0. The exponential distribution lies at the boundary. There is a large literature on testing exponentiality against NBUE alternatives. However, comparisons of tests have been made only for alternatives much stronger than NBUE. We show that a new Kolmogorov-Smirnov type test is much more powerful than its competitors in most cases. 相似文献
54.
Lorenzo Escot José Andrés Fernández-Cornejo Carlos Poza 《Population research and policy review》2014,33(3):419-453
This article investigates, for the case of Spain, to what extent the introduction in March 2007 of a non-transferable 13-day paternity leave has encouraged men to make greater use of childbirth leave. Data were drawn from the Spanish Economically Active Population Survey, covering the period 2005–2009. We use a natural experiment approach, comparing the behavior of wage earners fathers with children of less than 1 year of age before and after the reform and using mothers as control group. After estimating a difference-in-differences logistic regression model we obtain statistical evidence that there is a higher percentage of males on leave in the reference week in the post-reform period (after 2007). The article also analyzes some of the personal and socio-economic determinants of the fathers’ use of childbirth leave. Fathers are more likely to be on leave if they have stability in employment, if there are facilities for reconciling work and family life (working in the public sector) and if the partner is employed. The father’s age has an interesting U-shaped influence. 相似文献
55.
María Lameiras Fernández Yolanda Rodríguez Castro Manuel González Lorenzo 《Social indicators research》2004,66(3):197-211
The aim of this research is toevaluate the evolution of ambivalent sexismtoward women (ASI: Ambivalent Sexism Inventory,Glick and Fiske, 1996) and men (AMI: Acttitudetoward Men Inventory; Glick and Fiske, 1999)with a Spanish sample between 18–65 years ofage (n = 1003). The results show that sexistattitudes toward women and men are conditionedin different ways according to sex and age.Women as well as men have a more hostileattitude towards the opposite sex; but men havebenevolent attitudes toward both men and women.Moreover, there are similarities between thesexes in relation to their benevolent attitudestoward men. It is very interesting to point outthat below the age range of 38–42, there arefewer sexist attitudes and there are significantdifferences between the sexes about sexistattitudes toward women. We conclude that inorder to explain the evolution of sexistattitudes toward men and women, we must takeinto account not only generational changes butalso cultural and historical changes. 相似文献
56.
Abstract Employee organizational identification has been proposed and found to be positively related to employee health and well-being. The empirical evidence, however, is not unequivocal, and some authors have suggested possible downsides of identification with the organization as a whole or with a group within it. The potential negative effect of over-identification was tested empirically for the first time in the present paper. Two studies were conducted; Study 1 was cross-sectional and used a sample of Italian law court clerks (N=195) and Study 2 was longitudinal and employed a sample of Italian teachers (N=140 at T2). We proposed a curvilinear mediation model with identification curvilinearly predicting workaholism, and workaholism, in turn, negatively affecting employee well-being. This curvilinear link between organizational identification and workaholism means that workaholism at first decreases with growing identification, but when identification becomes too strong, workaholism increases. The results confirmed our hypotheses, and we discuss theoretical and practical implications. 相似文献
57.
Lorenzo?FattoriniEmail author Caterina?Pisani Andrea?Sforzi 《Statistical Methods and Applications》2004,13(2):197-212
Sample surveys for estimating the abundance of wildlife ungulate populations are considered in a design-based approach. On the basis of previous theoretical results, a two-stage sampling is proposed. In the first stage, some spatial units are selected using Lahiri-Midzuno sampling, while in the second stage, the animal abundance in the selected units is estimated by means of plot sampling performed on the faecal accumulation within the units. The statistical properties of the resulting ratio estimator of abundance are outlined. An application of the proposed method for estimating fallow-deer and roe-deer abundance in Maremma Regional Park is described. 相似文献
58.
“Displacement risk” is increasingly central to global policy discourse on disaster risk reduction (DRR), despite its vague formulation and inconsistent use. Different understandings of displacement, its complex relationship with vulnerability, and its ambiguous role as a necessary survival strategy for people in harm's way that also creates or exacerbates risk, hinder its clear conceptualization. This limits the clarity and value of recommendations to “reduce displacement risk” for DRR. The explicit consideration of two complementary aspects of risk related to displacement could support more comprehensive, actionable discourses: (1) the “risk stemming from displacement”, that is, any negative impact people might experience due to displacement, and (2) the “risk of remaining displaced”, that is, of people being displaced for a long time. Consideration of these aspects would allow to better include protection and durable solution perspectives within DRR, integrate displacement in disaster risk and loss assessments and add value to existing DRR efforts. 相似文献
59.
Edgardo Lorenzo 《统计学通讯:理论与方法》2014,43(21):4514-4518
The mean residual life of a life distribution, X, with a finite mean is defined by M(t) = E[X ? t|X > t] for t ? 0. Kochar et al. (2000) provided an estimator of M when it is assumed to be decreasing. They showed that its asymptotic distribution was the same as that of the empirical estimate, but only under very stringent analytic and distributional assumptions. We provide a more general asymptotic theory, and under much weaker conditions. We also provide improved asymptotic confidence bands. 相似文献
60.
De Simone Elina Cicatiello Lorenzo Gaeta Giuseppe Lucio Pinto Mauro 《Social indicators research》2022,159(3):1017-1033
Social Indicators Research - Recent studies highlight that economic expectations are a crucial determinant of citizens’ satisfaction with democracy (SWD). This article relies on a... 相似文献