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111.
This paper explores the possibility for a (non-preference-based) freedom ranking of opportunity sets that is sensitive to the diversity of the options. It turns out that how distances between sets and alternatives are measured is crucial to the derivation of such a ranking. Several proposals are examined, each of which is shown to lead to impossibility results.
Earlier versions of this paper were presented at conferences in Kortrijk, Osnabrück, Oisterwijk, Caen and Pavia. I thank the participants at these conferences for their comments. I would also like to thank Steven Hartkamp, Theo Kuipers, Clemens Puppe and especially Kotaro Suzumura for their helpful comments. Furthermore, I am very grateful to Somdeb Lahiri for pointing out a mistake in a previous version of this paper. 相似文献
112.
van Woerkom M 《New directions for youth development》2004,(102):35-46
In the woods of Maine, young people from conflict regions meet to learn about themselves, each other, and their potential to promote peace. 相似文献
113.
114.
Aurélien Baillon Han Bleichrodt Zhenxing Huang Rogier Potter van Loon 《Journal of Risk and Uncertainty》2017,54(3):269-281
Empirical studies of ambiguity aversion often use measures that are not grounded in theory. This paper shows how a theoretically-founded measure of ambiguity aversion can be derived from Hansen and Sargent’s theory of multiplier preferences. Multiplier preferences are used in macroeconomics to capture model uncertainty. At the micro level, they have not been applied yet, because they do not permit ambiguity seeking, which is usually observed for a substantial proportion of subjects. We give a preference foundation for (extended) multiplier preferences accommodating both ambiguity aversion and ambiguity seeking and we propose a simple method to measure them using matching probabilities. We illustrate our method in two large representative samples (Dutch and American) and obtain the first micro estimates of multiplier preferences. 相似文献
115.
Hans van Druten Ph.D. Frits van Griensven Ph.D. Jan Hendriks Ph.D. 《Journal of sex research》2013,50(4):477-499
The analysis of the spread of HIV in homosexual populations must be based on knowledge of all factors which promote or inhibit transmission. Recently, data were reported from the Amsterdam cohort study that imply that sexual role separation and the changes therein should be taken into account in analyzing and modeling the spread of HIV. In this paper, a role separation mixing model is described and linked to data from the Amsterdam cohort. The model allows one to study the impact of homosexual role separation on the spread of HIV. The homosexual men are classified into four sexual subgroups based on the preference for: 1) no anal intercourse; 2) anal insertive only; 3) anal receptive only; 4) both insertive and receptive. The analysis accounts for variability and change in homosexual role behavior and loss to follow up. The results support the conjecture that there are large differences between the risks of receptive and insertive anal intercourse, with the latter carrying only minimal risk. The analysis indicates that the spread of HIV is mostly restricted to subgroup 4, the largest and sexually most active subgroup. In this subgroup, the estimated probability of HIV transmission from an infected insertive partner (in subgroup 2 or 4) to a receptive susceptible (in subgroup 4) is between 1 and 5 percent (assuming a closed cohort). 相似文献
116.
A number of indices exist to calculate lifespan variation, each with different underlying properties. Here, we present new formulae for the response of seven of these indices to changes in the underlying mortality schedule (life disparity, Gini coefficient, standard deviation, variance, Theil’s index, mean logarithmic deviation, and interquartile range). We derive each of these indices from an absorbing Markov chain formulation of the life table, and use matrix calculus to obtain the sensitivity and the elasticity (i.e., the proportional sensitivity) to changes in age-specific mortality. Using empirical French and Russian male data, we compare the underlying sensitivities to mortality change under different mortality regimes to determine the conditions under which the indices might differ in their conclusions about the magnitude of lifespan variation. Finally, we demonstrate how the sensitivities can be used to decompose temporal changes in the indices into contributions of age-specific mortality changes. The result is an easily computable method for calculating the properties of this important class of longevity indices. 相似文献
117.
Communication in Care and Coercion: Institutional Interactions between Family Supervisors and Parents 总被引:1,自引:0,他引:1
van Nijnatten Carolus; Hoogsteder Mariette; Suurmond Jeanine 《British Journal of Social Work》2001,31(5):705-720
Summary In this study the interaction of 51 videotaped professionalcommunications between Dutch family supervisors and parentsof children under family supervision were analysed. Family supervisionlies at the interface of care and control. This is evident inthe communication of professional child welfare workers withtheir clients for whom they have to clarify their rights. Theanalysis shows some of the strategies used by Dutch family supervisorsin cases of formal decisions and other interactions where theyanticipate confrontation with the client. In this way, familysupervisors separate their caring from their repressive functions.Nevertheless care and control were found to be successfullyintegrated in some communications. 相似文献
118.
Ulrike Tischer Ilse Hartmann-Tews Claudia Combrink 《European review of aging and physical activity》2011,8(2):83-91
The article provides an overview of the results of cross-sectional and longitudinal data sets concerning sport participation
of the elderly in Germany with a focus on correlations of sport participation with gender, age, and social class. A tabular
overview lists the most central studies with their study design and publications from 2000 onwards. Findings regarding the
motivations for sport participation of the elderly, the types of sport which are done, and the preferred settings are summarized.
Eventually a conclusion is given about “what we know and what we don’t know.” 相似文献
119.
This research note is based on the evaluation of the Comenius project Teacher‐IN‐SErvice‐Training‐for‐Roma‐inclusion (INSETRom). The project represented an international effort that was undertaken to bridge the gap between Roma and non‐Roma communities and to improve the educational attainment of Roma children in the mainstream educational system. The evaluation of the project showed that such projects can impact a teacher's confidence and attitudes, but that implementing new insights poses many challenges. 相似文献
120.
Barry van Driel 《Intercultural Education》1999,10(2):173-182
The Gandhi Secondary School, located in Pécs, Hungary, was, until recently, the only secondary school in Europe devoted to preparing young Roma for higher education. This article discusses the school's origins and philosophy, its curriculum, and its teaching models. There is also a discussion of the reality of life at the school and the various challenges faced by teachers and students. 相似文献