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121.
Maria de Lourdes Melo Zurita Brian Cook Dana C. Thomsen Paul G. Munro Timothy F. Smith John Gallina 《Disasters》2018,42(3):571-589
This paper explores how social networks and bonds within and across organisations shape disaster operations and strategies. Local government disaster training exercises serve as a window through which to view these relations, and ‘social capital’ is used as an analytic for making sense of the human relations at the core of disaster management operations. These elements help to expose and substantiate the often intangible relations that compose the culture that exists, and that is shaped by preparations for disasters. The study reveals how this social capital has been generated through personal interactions, which are shared among disaster managers across different organisations and across ‘levels’ within those organisations. Recognition of these ‘group resources’ has significant implications for disaster management in which conducive social relations have become paramount. The paper concludes that socio‐cultural relations, as well as a people‐centred approach to preparations, appear to be effective means of readying for, and ultimately responding to, disasters. 相似文献
122.
Increased plant size in exotic populations: a common-garden test with 14 invasive species 总被引:1,自引:0,他引:1
The "evolution of increased competitive ability" (EICA) hypothesis predicts that exotic species will adapt to reduced herbivore pressure by losing costly defenses in favor of competitive ability. Previous studies often support the prediction that plants from exotic populations will be less well defended than plants from native populations. However, results are mixed with respect to the question of whether plants from exotic populations have become more competitive. In a common-garden experiment involving plants from two native and two exotic populations of 14 different invasive species, we tested whether exotic plants generally grow larger than conspecific native plants, and whether patterns of relative growth depend on the intensity of competition. We found a quite consistent pattern of larger exotic than native plants, but only in the absence of competition. These results suggest that invasive species may often evolve increased growth, and that increased growth may facilitate adaptation to noncompetitive environments. 相似文献
123.
Christiane Spitzmüller Dana M. Glenn Christopher D. Barr Steven G. Rogelberg Patrick Daniel 《组织行为杂志》2006,27(1):19-35
Survey nonresponse can pose a major threat to the generalizability of organizational survey findings. This paper examines whether organizational members' evaluations of their organizational experiences affect survey response to organizationally sponsored surveys. In particular, we hypothesized that perceived organizational support, social exchange, procedural justice and an individual's inclination to feel exploited in social relationships predicted organizational members' compliance with organizations' requests for survey completion. A longitudinal field experiment conducted in collaboration with the Office of Institutional Research at a large university (sample: n = 622 university students) supported the hypotheses. Organizational members who consciously decided to not participate in organizational surveys perceived their organization as less procedurally just and less supportive. They also reported negative perceptions of their social exchange relationship with their organization, and were more inclined to feel exploited in relationships. Hence, an exchange‐oriented theoretical framework grounded in organizational citizenship behavior theory seems appropriate for the study of survey nonresponse. Implications for survey practice include that survey‐based findings are unlikely to generalize to specific groups of nonrespondents, and that techniques commonly used to increase response rates may not be effective in reaching these groups of nonrespondents. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
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