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81.
The change of one's habitual living conditions in favor of institutionalized living in a retirement home can be a stressful event. Therefore, the question arises: How does entry into a retirement home affect attitudes toward one's life and aging and toward retirement homes? In order to answer this question, we used longitudinal data from 53 older individuals who were surveyed before and after entry into a retirement home. The data revealed that attitudes toward one's life and aging changed negatively and attitudes toward retirement homes changed positively; however, there are gains and losses in both attitudes. 相似文献
82.
Sylvia Frühwirth-Schnatter Rudolf Frühwirth Leonhard Held Håvard Rue 《Statistics and Computing》2009,19(4):479-492
The article considers Bayesian analysis of hierarchical models for count, binomial and multinomial data using efficient MCMC
sampling procedures. To this end, an improved method of auxiliary mixture sampling is proposed. In contrast to previously
proposed samplers the method uses a bounded number of latent variables per observation, independent of the intensity of the
underlying Poisson process in the case of count data, or of the number of experiments in the case of binomial and multinomial
data. The bounded number of latent variables results in a more general error distribution, which is a negative log-Gamma distribution
with arbitrary integer shape parameter. The required approximations of these distributions by Gaussian mixtures have been
computed. Overall, the improvement leads to a substantial increase in efficiency of auxiliary mixture sampling for highly
structured models. The method is illustrated for finite mixtures of generalized linear models and an epidemiological case
study. 相似文献
83.
ABSTRACT Contact and assistance between neighbors are prominent forms of social exchange in a spatial context. For older adults, the neighborhood gains in importance when mobility disabilities increase. This explorative study, therefore, aimed to investigate given and received neighborhood help and the everyday meaning of neighboring among older adults in an urban district. Study participants were aged 60 years and older (N = 100) living in an urban district of Zurich, Switzerland. Results highlight that older adults reported vivid interactions with their neighbors and that reciprocity exists between given and received neighborhood help. Besides that, daily contact and neighborhood help affect the perceived feeling of neighboring. Data indicate that neighboring is a meaningful resource for coping with everyday life situations in old age in an urban context. 相似文献
84.
This paper identifies convex distributional preferences as a possible cause for the empirical observation that agents belonging to the same group tend to behave similarly in risky environments. We first show theoretically that convex distributional preferences imply social interaction effects in risky choices in the sense that observing a peer choose a risky (safe) option increases the agent’s incentive to choose the risky (safe) option as well, even when lotteries are stochastically independent and the agent can only observe the lottery chosen by the peer but not the corresponding outcome. We then confirm our theoretical predictions experimentally. 相似文献
85.
Several hypotheses are put forward with respect to promotion differentials between males and females on the academic labour market. These hypotheses are tested on the basis of a longitudinal data set of academic staff members at Utrecht University. The methods applied include Poisson regression, Negative Binomial analysis and Probit analysis. Full-time instead of part-time work and a Ph.D. degree prove to be efficient but not sufficient instruments for women on the academic labour market to catch up with men with respect to promotions. 相似文献
86.
When a linear model is adjusted to control for additional explanatory variables, the sign of a fitted coefficient may reverse. Here, these reversals are studied using coefficients of determination. The resulting theory can be used to determine directions of unique effects in the presence of model uncertainty. This process is called model-invariant estimation when the estimates are invariant across changes to the model structure. When a single covariate is added, the reversal region can be understood geometrically as an elliptical cone of two nappes with an axis of symmetry relating to a best-possible condition for a reversal using a single coefficient of determination. When a set of covariates are added to a model with a single explanatory variable, model-invariant estimation can be implemented using subject matter knowledge. More general theory with partial coefficients is applicable to analysis of large datasets. Applications are demonstrated with dietary health data from the United Nations. 相似文献
87.
Alexander G. Tartakovsky Boris L. Rozovskii Rudolf B. Blaek Hongjoong Kim 《Statistical Methodology》2006,3(3):329-340
In this rejoinder, we address all or almost all comments that have been provided by the discussants. In particular, we include additional references to literature related to change-point detection as well as to intrusion detection; analyze distributions of stopping times of the CUSUM and Shiryaev–Roberts detection procedures under the no change hypothesis in more detail; and provide an overview of the detection-isolation problem. 相似文献
88.
In this paper we investigate earnings mobility in Austria from the angle of individual persons. Earnings mobility over time
has two aspects: Positional changes and the volatility of earnings over time. Whereas the further is a positive outcome, more
volatility as such can be seen as negative. We use Austrian data from tax authorities to find out how population characteristics
are related to these two concepts of earnings mobility. Our main results concern initial positions: The higher up you are
at the beginning, the more difficult is further positional advancement, moreover, in terms of volatility we see that those
in the lowest quantiles of the earnings distribution face the highest volatility of earnings positions over time.
*Rudolf Winter-Ebmer is also associated with CEPR, London and IZA, Bonn. 相似文献
89.
Rudolf Mrázek 《East Asian Science, Technology and Society: An International Journal》2009,3(2-3):287-314
This is not a comparison between the colonial isolation camp for the Indonesian Communists and Nationalists at Boven Digoel, New Guinea, and the Nazi concentration camp for the European (including Dutch) Jews in Terezín, Bohemia. It is an effort to place both camps, as two working apparatuses, on the scale of development and refinement of modern technologies of belonging (and destruction); thus, the scale may be more clearly understood. Subchapters—on body and clothing, on hearing, on seeing, and on the urban—suggest that this is an epilogue never written for my 2002 book Engineers of Happy Land: technology and nationalism in a colony. 相似文献
90.