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Cinnirella Alessandro Bisci Carlo Nardi Sandro Ricci Emanuela Palermo Francesco Alessandro Bracchetti Luca 《Urban Ecosystems》2020,23(2):255-269
Urban Ecosystems - The spread of the red palm weevil is now a very severe problem on a global scale. In this paper, we investigate its spread during the 2007–2013 period in a coastal urban... 相似文献
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Maria Giulia Olivari Gaia Cuccì Andrea Bonanomi Semira Tagliabue Emanuela Confalonieri 《Marriage & Family Review》2018,54(3):282-295
This study aims to calculate a scaled risk-taking behavior index and to test a model in which maternal and paternal parenting styles affect risk-taking behavior with a mediation of adolescents’ regulatory self-efficacy. Participants were 816 adolescents (44% males) responding to a self-report questionnaire about their risk-taking behavior, regulatory self-efficacy, and retrospective memories of paternal and maternal parenting styles. Results suggested an item rating in the index showing that behaviors considered less risky referred to alcohol use and the unplanned first sexual intercourse, whereas behaviors considered more risky referred to the lack of use of contraceptives and the age of the first sexual intercourse. Results revealed a significant indirect effect of authoritative and authoritarian styles on risk-taking behavior. These styles shaped the adolescents’ regulatory self-efficacy, which in turn predicted adolescent risk-taking behavior. Results underline the complex interplay of relationships between parents and their children. 相似文献
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Generally, inequality indices play a basic role in the analysis of welfare economics, also appearing as technical tools applied to income data. A good deal of findings in this research field is provided by the Gini coefficient, typically used for non-negative income values. Even if negative income is often an unfamiliar concept, its presence in real surveys may lead to difficulty in applying the classical Gini-based inequality measures, as they lie outside their standard ranges. In this paper, the more general issue of negative values is considered and a reformulation of the main Gini-based inequality measures adjusted for the problem of negative values is adopted with the purpose of providing theoretical extensions for the income decomposition approach by both income sources and area components. Investigations about the related inferential issues, conducted thorough simulation studies based on resampling techniques, highlight how the traditional approach of removing negative income values may yield different results in terms of inequality estimation, proving that the proposed approach, based on preserving negative values, is the more appropriate practice to follow to avoid the loss of data that really provide a coherent picture of the inequality condition. 相似文献
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Sara M. Hofmeier Cristin D. Runfola Margarita Sala Danielle A. Gagne Kimberly A. Brownley Cynthia M. Bulik 《Journal of women & aging》2017,29(1):3-14
We conducted a qualitative study of 1,849 women over age 50 to capture the thoughts, feelings, and attitudes that women at middle age have about their bodies and the experience of aging. Via an open-ended question online survey, four primary themes emerged: (a) the physical and psychological experience of aging; (b) the injustices, inequities, and challenges of aging; (c) the importance of self-care; and (d) a plea for recognition of the need to maintain a contributory role in society. Results highlight the complexities of women’s psychological and physical aspects of aging and point toward important topics worthy of further study in this growing population. 相似文献
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In this article, we focus on the analysis of individual decision‐making for the formation of social networks, using experimentally generated data. We analyze the determinants of the individual demand for links under the assumption of agents' static expectations and identify patterns of behavior that correspond to three specific objectives: players propose links so as to maximize expected profits (myopic best response strategy); players attempt to establish the largest number of direct links (reciprocator strategy); and players maximize expected profits per direct link (opportunistic strategy). These strategies explain approximately 74% of the observed choices. We demonstrate that they are deliberately adopted and, by means of a finite mixture model, well identified and separated in our sample. (JEL C33, C35, C90, D85) 相似文献
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Fabio Sala 《Nonprofit management & leadership》2003,14(2):171-189
College leaders face increasing challenges to manage complex responsibilities. They must possess a wide variety of managerial and leadership skills to be successful in academic environments, which are beginning to resemble more traditional organizational frameworks. The study examined in this article explored the relationships among managerial style, organizational climate, and several measures of college‐student performance with a sample of British further education college principals (similar to U.S. community college presidents). While considering the influence of various background factors, such as the size of the college, student funding, and years of experience, several significant relationships emerged demonstrating a significant association between principals' managerial behaviors and measures of college and student performance. 相似文献
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Emanuela Ferreri 《International Review of Sociology》2013,23(3):699-710
The paper analyses the common sentiment created around the so-called Arab spring, upon the basis of a narrative developed and disseminated by the mass media as well as in the specialist literature with regard to these complex, varied, and consequential events. It concerns a vision which gathers and promotes an awakening of social dignity through actions of popular revolt and protest, a demand for political change which has cost the peace and lives of too many people, of entire societies. 相似文献
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Maria Giulia Olivari Semira Tagliabue Emanuela Confalonieri 《Marriage & Family Review》2013,49(6):465-490
Increasing interest in measuring parenting styles, especially with the Parenting Style and Dimensions Questionnaire, has emerged in the last 17 years. However, a critical review of studies using this instrument to assess parenting styles has not been done. The present article proposes an extensive review of studies that applied the instrument, focusing in particular on the different uses of the scale, its psychometric properties, and its association with other constructs. A discussion about the applicability, measurement reliability and validity of the instrument is provided. 相似文献