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51.
Existing leadership research has presented conflicting views on the effects of leader anger expressions. The present research aims to reconcile these findings by proposing that the type of inferences followers make (i.e., motivation-focused inference or trait-focused inference) is a key factor determining the outcomes of leader anger expressions. Through one survey study (Study 1) and two experimental studies (Studies 2 and 3), the present research indicates that the effectiveness of leader anger expressions is associated with the type of inferences followers draw from the anger. In general, we found support for the negative relationship between trait-focused inferences and leader effectiveness, but were unable to properly test the positive relationship between motivation-focused inferences and leader effectiveness due to the lack of appropriate instrumental variables. We also investigated whether followers' implicit theories of personality (i.e., entity versus incremental theory) would moderate the effect of leader anger expressions on the type of inferences made by followers, which in turn shapes leader effectiveness. The results of Study 3 provide evidence of the moderating role of implicit theories of personality. Theoretical contributions and practical implications of the present research are discussed. 相似文献
52.
Lars Rude Andersen Jens Herman Krebs Jens Damgaard Andersen 《Journal of applied statistics》1991,18(1):139-153
Causal probabilistic models have been suggested for representing diagnostic knowledge in expert systems. This paper describes the theoretical basis for and the implementation of an expert system based on causal probabilistic networks. The system includes model search for building the knowledge base, a shell for making the knowledge base available for users in consultation sessions, and a user interface. The system contains facilities for storing knowledge and propagating new knowledge, and mechanisms for building the knowledge base by semi-automated analysis of a large sparse contingency table. The contingency table contains data acquired for patients in the same diagnostic category as the intended application area of the expert system. The knowledge base of the expert system is created by combining expert knowledge and a statistical model search in a model conversion scheme based on a theory developed by Lauritzen & Spiegelhalter and using exact tests as suggested by Kreiner. The system is implemented on a PC and has been used to simulate the diagnostic value of additional clinical information for coronary artery disease patients under consideration for being referred to coronary arteriography. 相似文献
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54.
Herman E. Daly 《Population and environment》1991,12(3):257-263
The notion of optimal population is recast as a problem of optimal scale (population times per capita resource use). Bioeconomic limits to scale are considered, drawing on concepts from A.J. Lotka and N. Georgescu-Roegen. The ethical choice between many people at low resource use per capita versus fewer people at higher resource per capita transcends bioeconomics, but is unavoidable and highlights the issue of sufficiency as well as efficiency. A policy of increasing resource severance taxes and lowering income taxes, especially on lower incomes, is suggested as a way of serving both efficiency and sufficiency.Presented at the symposium on Population and Scarcity: The Forgotten Dimensions. 相似文献
55.
Chaotic deterministics systems are characterised by the instability of orbits on an attractor. The largest Lyapunov exponent measures on average the exponential growth rate of small deviations along an orbit and gives as such an indication whether or not the dynamic generating process is unstable. The direct method for calculation of the Lyapunov exponent, based on finite differences as formulated by the so-called Wolf-algorithm,fails on medium sized data sets. Alternatively, one can use a neural network with backpropagation to estimate a data generating function. This so-calletl indirect method enables us to recover the theoretical value of the largest Lyapunov exponent in several examples. 相似文献
56.
Glenna B. Rubin 《Journal of Social Distress and the Homeless》1992,1(3-4):249-271
Professionals exercise a great deal of discretion in the application of mandatory reporting laws and child welfare laws. This paper examines the subjective factors that influence the decisionmaking process from labeling an incident as possible abuse or neglect through the disposition stage. Multicultural issues that affect each stage of the process are discussed. Areas of disparate treatment of minorities are considered. Disparate treatment stems from biased and unequal application of the laws in some cases, or when standards are applied and interventions made that are insensitive to the cultural context of the family. Potential consequences of failing to consider culture in applying child protection laws are biased reporting, errors in assessing perceived risk, ineffective interventions, and increased out- of- home placements. The need for a culturally sensitive approach to assessment and intervention is emphasized. Areas for future research are recommended. 相似文献
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58.
Since the introduction of federal mental health legislation in 1963, there has been a changing emphasis on evaluation and accountability. With direct federal funding of community mental health services, accountability demands were met through expectations for local agency evaluation activities which were overseen by federal authorities. The advent of the New Federalism and the shift to block grant funding of mental health services to state mental health authorities have shifted responsibility for evaluation to the states and local programs. This paper reviews federal mental health statutes to trace the extent and locus of required evaluation activities and discusses two approaches to carrying out program evaluation: "top-down" where the evaluation topic, method, and data collection are mandated by an administering or funding body; and "bottom-up" approaches where the subject, method of study, and data to be collected are developed in response to a felt need at the local agency level. A case study of each approach as used at the state level in mental health is examined. Based on the literature and the case studies, conclusions are presented on the pro's and con's of each method in meeting accountability demands and the barriers which must be overcome for either method to be successful. 相似文献
59.
This article examines the performativity of intellectual property in digital gaming environments, with a focus on Massively Multi-Player On Line Games (MMOGs). The analysis centers on the creation and management of goodwill, an intangible asset of considerable value to corporations based on affective bonds between consumers, corporations, and their commodities in the marketplace. Most critical analyses of intellectual property consider neither the centrality of goodwill to corporate management of their intellectual properties in digital environments, nor the significance of the legal conditions that structure activity in such contexts. We develop a theoretical framework based on cultures of circulation involving network sociality, circuits of interactivity and the extensibility of the computer/user interface. This enables us to better understand shifting relations of power and reciprocity between corporations and consumers in digital gaming contexts, where the division between player-consumption and player-production is increasingly blurred. Technological capacities for consumers to become producers of gaming content changes the terrain upon which conflicts between corporations and consumers about intellectual property are negotiated and enhances the value of goodwill. An examination of Linden Lab's Second Life – one of the fastest growing MMOGs and the first to affirm players’ intellectual property rights in their digital creations – provides an illustration of both the limits and possibilities afforded by goodwill as a form of emerging governance in game worlds. 相似文献
60.
Globalism's 'siren song': the United Nations and international law in Christian Right thought and prophecy 总被引:1,自引:0,他引:1
Didi Herman 《The Sociological review》2001,49(1):56-77
The role of the American Christian Right (CR) as an international social movement has perhaps received less attention than it is due. In this article, I explore the underlying global vision of the CR, and the ways in which this vision shapes the CR's international political activism. I focus on the CR's construction of the United Nations, examining various CR genres including movement publications, fiction, and prophecy writing. I also attempt to analyse the CR's ideological stance in light of the literature on 'religion and globalisation'. 相似文献