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81.
Likelihood ratio tests for the homogeneity of k normal means with the alternative restricted by an increasing trend are considered as well as the likelihood ratio tests of the null hypothesis that the means satisfy the trend. While the work is primarily a survey of results concerning the power functions of these tests, the extensions of some results to the case of not necessarily equal sample sizes are presented. For the case of known or unknown population variances, exact expressions are given for the power functions for k=3,4, and approximations are discussed for larger k. The topics of consistency, bias and monotonicity of the power functions are included. Also, Bartholomew's conjectures concerning minimal and maximal powers are investigated, with results of a new numerical study given. 相似文献
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Shih-Ming Hu Cheng-I Wei Margaret R. Schlais Jung-Mao Yeh 《Journal of Housing for the Elderly》2013,27(1-2):45-65
ABSTRACT The purpose of this study is to evaluate the potential of college towns as retirement communities. The uniqueness of college towns as potential retirement communities are identified and discussed. Differences between college towns and Sunbelt state retirement destinations regarding the factors that are most concerned by retiree migrants in their decision-making for relocation were compared. The results showed no differences between the college towns and the Sunbelt state retirement cities. Only a few differences existed among the college town subgroups. The findings are of value to the senior living industry, local government and chamber of commerce in their efforts in marketing college towns as prospective retirement communities. 相似文献
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Brandi N. Hawk Amanda Wright Megan M. Julian Johana M. Rosas Emily C. Merz Robert B. McCall 《Adoption quarterly》2013,16(2):97-107
This study assesses selective responding in a single wave of data collection and a four-wave study. Participants were 121 parents of post-institutionalized children, identified as “never responders,” “previous responders,” or “wave 4 responders.” Parents evaluated their adopted child's family, school, peer, and behavioral adjustment. Children (47% male) were 2 to 20 years old (M = 10.79, SD = 4.59) and adopted between 5 and 54 months of age (M = 15.49, SD = 9.94). Within a single wave of data collection, no evidence suggested that selective responding contributes much bias. Over a multi-wave study, however, results may under-represent adjustment difficulties. 相似文献
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This paper reviews the anomaly that seems currently to exist within the profession of social work — on the one hand a denigration of the value and utility of individualized services, and on the other, the increased anonymity of life in today's technological society. It is suggested that the need for individualized services will continue to exist regardless of institutional change and that clinical social work will remain an essential and specialized part of the social work profession. It is postulated that if the clinicians look elsewhere for education and recognition this will be a loss for social work. 相似文献