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141.
142.
The authors describe their success with a permanency planning project that emphasized interagency cooperation and worked from the thesis that every child is adoptable if return to the biological family is not possible. 相似文献
143.
One characterization of group sequential methods uses alpha spending functions to allocate the false positive rate throughout a study. We consider and evaluate several such spending functions as well as the time points of the interim analyses at which they apply. In addition, we evaluate the double triangular test as an alternative procedure that allows for early termination of the trial not only due to efficacy differences between treatments, but also due to lack of such differences. We motivate and illustrate our work by reference to the analysis of survival data from a proposed oncology study. Such group sequential procedures with one or two interim analyses are only slightly less powerful than fixed sample trials, but provide for the strong possibility of early stopping. Therefore, in all situations where they can practically be applied, we recommend their routine use in clinical trials. The double triangular test provides a suitable alternative to the group sequential procedures in that they do not provide for early stopping with acceptance of the null hypothesis. Again, there is only a modest loss in power relative to fixed sample tests. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
144.
Michael Murray 《Innovation: The European Journal of Social Science Research》2004,17(3):227-242
The central argument in this article is that recent advances in strategic spatial planning on the island of Ireland have been considerably enhanced through the medium of the European Spatial Development Perspective. This has provided a shared technical vocabulary and an imperative to imagine possibilities which transcend the border between Northern Ireland and the Republic of Ireland to a greater and lesser extent, depending on the sensitivities of the actors concerned. Particular attention is given to the role played by very different participatory processes in helping to shape these spatial agendas. The paper concludes by identifying an action‐oriented commitment to sustainable development as the key strategic choice in advancing the logic of territorial interdependence. 相似文献
145.
Cathy Murray 《Children & Society》2006,20(4):273-286
Peer led focus groups, a qualitative social science research method, and their use with young people are examined. The paper outlines three developments that have contributed to their emergence, namely: traditional focus groups, peer education and participatory research. Drawing on a study in progress, the advantages and challenges associated with peer led focus groups are discussed. A key benefit is that the power differential between the adult researcher and the researched is removed, at least at the point of data collection, rendering peer led focus groups one of few research contexts in which young people can speak collectively with no adult present. 相似文献
146.
The paper presents an overview of maximum likelihood estimation using simulated likelihood, including the use of antithetic variables and evaluation of the simulation error of the resulting estimates. It gives a general purpose implementation of simulated maximum likelihood and uses it to re‐visit four models that have previously appeared in the published literature: a state–space model for count data; a nested random effects model for binomial data; a nonlinear growth model with crossed random effects; and a crossed random effects model for binary salamander‐mating data. In the case of the last three examples, this appears to be the first time that maximum likelihood fits of these models have been presented. 相似文献
147.
148.
Murray Ryburn 《Children & Society》1995,9(3):41-64
SUMMARY: It has long been accepted that adopted children need access to information about their origins in order to provide a satisfactory answer to the question ‘who am I?’. Such information is seen as vitally important to the formation of a clear and positive sense of identity in adulthood. This study examines the role that such information plays in the formation of personal identity and analyses accounts from 67 adopters of their children's requests for information about their families of origin. Comparisons are made between adopters whose children maintain contact with their families of origin and those whose children have no contact. 相似文献
149.
Attitudes and Values of Scottish Farmers: “Yeoman” and “Entrepreneur” as Factors,Not Distinct Types1
Elisabeth J. Austin Ian J. Deary Gavin J. Gibson Murray J. McGregor J. Barry Dent 《Rural sociology》1996,61(3):464-474
Abstract We investigate the validity of the classification of farmers into two or more distinct types on the basis of attitudes, objectives, and values. Factor analysis of data from a survey of farm pluriactivity in Scotland (N=472) shows that attributes ascribed to “yeoman” and “entrepreneur” types emerge as separate factors rather than as a single bipolar factor. No clustering of the factor scores corresponding to distinct types is found. We also present correlations of the factor scores with attitudes to on- and off-farm pluriactivity and with observables such as age and off-farm employment. The desirability of analyzing survey data by methods which do not make assumptions about typology is discussed. 相似文献
150.
This study examined ethnicity and psychological predictors of beliefs in guilt and innocence in the O. J. Simpson trial. A mixed-gender, multiethnic sample of 441 college students completed measures examining trial beliefs, trial-related attitudes, ethnic identification, pro- and anti-Black attitudes, and authoritarian personality traits. Results revealed that: (1) mean differences existed among ethnic groups on all variables examined; (2) proximal attitudes mediated relations between psychological characteristics and trial outcome beliefs; and (3) specific relations depended (to some extent) on ethnic group membership. Differences within and between ethnic groups may reflect schematic differences due to differential experiences with societal institutions, identification with (or rejection of) mainstream values, and race relations in American society. 相似文献