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The Freshwater Invertebrate Invasiveness Scoring Kit (FI‐ISK) is proposed as a screening tool for identifying potentially invasive freshwater invertebrates. FI‐ISK was adapted from the Fish Invasiveness Scoring Kit (FISK) of Copp, Garthwaite, and Gozlan, which is an adapted form of the Weed Risk Assessment (WRA) of Pheloung, Williams, and Halloy. Initial assessments using FI‐ISK, which include confidence (certainty/uncertainty) rankings by the assessor to each response, were calibrated to determine the most appropriate score thresholds for classifying nonnative species into low‐, medium‐, and high‐risk categories, using both the original medium‐to‐high risk threshold scores for the WRA (i.e., ≥6) and for FISK (i.e., ≥19). Patterns of the assessor's confidence, when making the responses during the FI‐ISK assessments, were also examined. Using receiver operating characteristic (ROC) curves, FI‐ISK was shown to distinguish accurately (and with statistical confidence) between potentially invasive and noninvasive species of nonnative crayfish (Decapoda: Astacidae, Cambaridae, Parastacidae), with the statistically appropriate threshold score for high‐risk species scores being ≥16. FI‐ISK represents a useful and viable tool to aid decision‐ and policymakers in assessing and classifying freshwater invertebrates according to their potential invasiveness. 相似文献
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This paper advances a social ecological perspective on the resources necessary to support workplace diversity. It is based on observations from an ongoing organizational case study which used a collaborative inquiry process. We worked with insiders to establish a project steering team, conducted 36 confidential interviews, and met with work units to assess diversity-related concerns. The complex case portrait that emerged illuminates four lessons about the ecology of workplace diversity: (1) the influential role of organizational history and tradition in shaping current diversity dynamics, (2) the importance of understanding how participants' experiences of events may differ, (3) the power of informal organizational processes, and (4) the connections between individual, organizational, and broader cultural values. We discuss these lessons in the context of a three-part definition of support for effective diversity which includes representational, interactional, and cultural components. The goal is to further our understanding of the factors that support or hinder workforce diversity so we may more effectively create settings that are supportive of diversity. 相似文献
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Gordon R. Foxall 《国际管理评论杂志》1999,1(2):133-158
Consumer research remains overwhelmingly cognitive in orientation, partly because its apparent underlying philosophical stance usually goes unremarked and unchallenged. In so far as scientific progress relies on the interaction of competing theories, consumer research is impoverished by too great a reliance on a single approach to theory. This paper proposes an alternative to the prevailing 'intentional stance' on which consumer research predominantly rests; the 'contextual stance' eschews the intentionality of the cognitive explanations of consumer choice, substituting for it an account of behaviour determined by its environmental consequences. As a prelude to the interactive debate that these competing stances will hopefully engender, the paper demonstrates that the contextual stance is a viable strategy for consumer research. The contextual strategy leads to an alternative model of consumer choice to those based on social cognitive psychology. It is argued that this model of consumer choice in behavioural perspective provides a thoroughgoing conceptual reinterpretation of consumer behaviour and marketing management as currently envisaged. 相似文献
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In foot‐and‐mouth disease (FMD) free countries, the occurrence of an FMD outbreak is a rare event with potentially large economic losses. We explore the dynamic effects of an FMD outbreak on market variables and economic surplus taking into account the largely neglected issue of farm bankruptcy. Simulations are performed on a stylized agricultural economy, which is a net exporter before the outbreak. We find complex dynamic market effects when the farm credit market suffers from information imperfections leading to farm closure. Welfare effects are also dramatically altered. Domestic consumers may lose in the long run from an FMD outbreak because domestic supply contracts. On the other hand, farmers able to resist this event may ultimately gain. Our analysis also shows that these effects are not monotone, making any efficient policy response to this catastrophic event quite challenging. 相似文献
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Jean Acker Wright 《Serials Review》2013,39(1):103-104
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