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Each of several exchange partners owns a specific commodity which she can share with others. Unlike in other social dilemma scenarios like prisoners’ dilemma, public goods games, etc., voluntary cooperation relies on bilateral exchanges whose profitabilities are interdependent. How will mutual sharing evolve? Will it include all group members or will smaller groups be more efficient? Our experimental data shed partly new light on older topics: cooperation is now relation specific, allowing for discrimination; group size effects are explored dynamically rather than in one-shot interaction; and, finally, we have weakened demand effects for voluntary cooperation by realistic efficiency gains. 相似文献
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Tanja Dünnfründ Bernd Gasch Siegfried Greif Martin Schneider Falko von Ameln Josef Kramer 《Gruppendynamik und Organisationsberatung》2007,38(4):407-422
Potentials of organization development (OD) are discussed from the perspectives of organization/client, counselling and science. The focal questions of the discussion are: What can OD achieve compared to strategy consulting? How can both forms be sensibly combined? What are the potentials of a psychologically based form of organizational counselling? Which (potentially latent) functions do organizational consulting / OD fulfil for the client organization? The discussion closes with considerations regarding a potential professionalization and the future of OD. 相似文献
605.
The Change Explorer is a multimethod tool for the evaluation of and improvement in the change management process. It has been developed based on an integrative systemic change management theory. The contribution describes the theoretical background and different modules, like the interview with card and structure analysis techniques, questionnaires, and results workshop, performed with the key persons involved in the changes. Flexible application possibilities, high practice acceptance and typical results are shown by three project examples. The first is a scientific research study on changes at the police; the second is an applied evaluation and improvement project of the change management at all important changes of a group of companies, and the third is an explorative study of change management in bicultural teams. The tool promotes common self-reflection under consideration of the different perspectives of the key persons involved. This allows developing improvements in the change management in a workshop of the interview partners, better supported by common experience. Important is here particularly the recording of concrete qualitative information on evaluation criteria and success factors by the interviews besides the assessment of quantitative data. 相似文献
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It is shown how the usual two-step estimator for the standard sample selection model can be seen as a method of moments estimator. Standard GMM theory can be brought to bear on this model, greatly simplifying the derivation of the asymptotic properties of this model. Using this setup, the asymptotic variance is derived in detail and a consistent estimator of it is obtained that is guaranteed to be positive definite, in contrast with the estimator given in the literature. It is demonstrated how the MM approach easily accommodates variations on the estimator, like the two-step IV estimator that handles endogenous regressors, and a two-step GLS estimator. Furthermore, it is shown that from the MM formulation, it is straightforward to derive various specification tests, in particular tests for selection bias, equivalence with the censored regression model, normality, homoskedasticity, and exogeneity. 相似文献
608.
Using data from individuals who earned a Ph.D. in economics in 1996-97, this study identifies factors associated with securing full-time permanent positions and determinants of starting salaries for new Ph.D. economists. Where individuals attend graduate school and factors including the field of specialization and work as a teaching/research assistant impact whether graduates obtain full-time permanent jobs. Choice of graduate program and amount of time spent in the program influence starting salary, as does obtaining a position outside academia or in a research-oriented academic institution, both of which entail higher salaries relative to employment at a B.A.-level academic institution. 相似文献
609.
Cathryne L. Schmitz Tom Matyók Lacey M. Sloan Channelle James 《International Journal of Social Welfare》2012,21(3):278-286
Schmitz CL, Matyók T, James C, Sloan LM. The relationship between social work and environmental sustainability: Implications for interdisciplinary practice The Brundtland Commission, formally the World Commission on Environment and Development, established by the United Nations in 1983, links peace, security, development and the environment claiming that war, poverty and structural violence result in the oppression and degradation of the human community as well as the physical environment. Likewise, human rights and social and environmental justice are intertwined, and social work, as a profession that collaborates across disciplines and within communities, is uniquely situated to provide leadership in the field of environmental studies. Its strong focus on human rights, social justice and community building creates a sound base from which to engage in the collaborative, creative, interactional processes required for environmental practice. This article seeks to discern a model for environmental social work within the context of interdisciplinary practice with peace and conflict workers and through the integration of inclusive models of economic development. 相似文献
610.
Abstract. This paper analyzes to what extent the rise in women's labor force participation has led to ‘flocking together’, i.e. whether women with high labor income tend to be married to men with high labor income, or vice versa. Based on the decomposition of the Gini coefficient and a related index for the extent of ‘flocking together’ applied to labor income data for Norway for the period 1973–97, we find a tendency for ‘flocking together’ for all married couples, and married couples with two labor incomes. 相似文献