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61.
Survey‐based studies on collective action generally assume that social approval of participation in collective action has a positive and linear effect on actual participation. However, this assumption has not yet been subjected to a genuine empirical evaluation. This article investigates the positive linearity thesis, using survey data on participation and non‐participation in a street demonstration in The Hague in 2011. Statistical analyses provide evidence in support of a curvilinear relation between social approval and participation—an increased rate of participation in case of both approval and disapproval by peers. We discuss two processes underlying the observed relation: one pertaining to rebelliousness and the other regarding political awareness. The article generally illustrates the need for further empirical research on social influence and participation in collective action. 相似文献
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Nicole Marie Brown 《Sociological focus》2017,50(3):244-260
This research surveys the literature around black consumerism and social movements, exploring the “Don’t Buy Where You Can’t Work” (DBWYCW) campaigns of the 1920s-1940s. The author examines the integral roles women played (as organizers, agitators, and beneficiaries) in various economic boycotts within the context of Belinda Robnett’s theory of bridge leadership, with a particular focus on consumerism as a major vehicle through which African-American women engaged in movement work during the DBWYCW campaigns. This article challenges the erasure of women’s leadership by reframing “Don’t Buy” as a women’s movement. Applying Robnett’s bridge leadership theory to different eras, regions, and movements, we see how the Great Depression combined with activism in the gendered sphere of consumerism and facilitated the activism of black women. This paper also expands Robnett’s conceptualization of professional and indigenous bridge leaders by identifying urban working class women within the “Don’t Buy” movement who fit these leadership categories. 相似文献
64.
Marie Thibaud Frédéric Bloch Caroline Tournoux-Facon Cyril Brèque Anne Sophie Rigaud Beno?t Dugué Gilles Kemoun 《European review of aging and physical activity》2012,9(1):5-15
The objective of this work was to summarise and evaluate the evidence showing that physical activity is a protector factor as regards falls in older people. Relevant studies were identified through a systematic search in the MEDLINE and Cochrane Library, under the keywords of accidental fall/numerical data and risk factors, and with the bibliographies of retrieved papers. The combined odds ratio (OR) [95% confidence interval] for physical activity was 0.75 [0.64, 0.88] with moderate heterogeneity (I 2?=?33%). For fall injury, it was 0.59 [0.47, 0.74] and, for falls in general, it rose to 0.94 [0.76, 1.17] with nil heterogeneity. The combined OR for sedentary factors was 1.14 [1.10, 1.82] with moderate heterogeneity (I 2?=?36%). Regular physical activity in daily life yields significant reduction in falls in older people, especially falls with injuries. 相似文献
65.
Sankalp Chaturvedi Michael J. Zyphur Richard D. Arvey Bruce J. Avolio Gerry Larsson 《The Leadership Quarterly》2012,23(2):219-232
In this study, we examined the moderating influences of gender and age with respect to testing the heritability of leadership emergence. A large data base of 12,112 twins from Sweden was used in the current study to decompose the variance of emergent leadership into an unobservable genetic component and environmental components that are either common or unshared among twin pairs. Consistent with prior leadership research on genetics, we found that a genetic factor is able to explain a significant proportion of the variation across individuals in predicting how twins perceive their emergent leadership behavior (about 44% for women and 37% for men). Furthermore, we also found that the magnitude of genetic influence on emergent leadership varied with age, but only for women with the heritability estimate being highest for the mid-age women versus lowest for the older women. Implications for advancing research on the genetic and environmental influences on leadership emergence are discussed. 相似文献
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Probabilistic risk assessment (PRA) is a useful tool to assess complex interconnected systems. This article leverages the capabilities of PRA tools developed for industrial and nuclear risk analysis in community resilience evaluations by modeling the food security of a community in terms of its built environment as an integrated system. To this end, we model the performance of Gilroy, CA, a moderate‐size town, with regard to disruptions in its food supply caused by a severe earthquake. The food retailers of Gilroy, along with the electrical power network, water network elements, and bridges are considered as components of a system. Fault and event trees are constructed to model the requirements for continuous food supply to community residents and are analyzed efficiently using binary decision diagrams (BDDs). The study also identifies shortcomings in approximate classical system analysis methods in assessing community resilience. Importance factors are utilized to rank the importance of various factors to the overall risk of food insecurity. Finally, the study considers the impact of various sources of uncertainties in the hazard modeling and performance of infrastructure on food security measures. The methodology can be applicable for any existing critical infrastructure system and has potential extensions to other hazards. 相似文献
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Steve Bruce 《The British journal of sociology》2016,67(4):613-631
At the start of the twentieth century the religious differed from the religiously indifferent largely in being religious. Now they differ in a number of other social and demographic characteristics that reduce interaction between the two populations further than simple numbers would require. That some of the main carriers of religion are immigrants or adherents of recently imported faiths reinforces the sense that religion is what other people do. In the context of the stock of religious knowledge being depleted and religion‐taken‐too‐seriously being unpopular, the narrow demographic base of the religious makes conversion unlikely and thus makes the reversal of secularization unlikely. 相似文献