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101.
In this paper, we argue for two propositions: children are socialised and guided to become competent members of school mealtime community, and children have the capacity to modify and challenge existing practices. We draw on Bakhtin's concepts of the carnivalesque laughter and grotesque realism to illustrate how children use humour to test the boundaries of what is permitted. Children's mealtime interactions foster the development of social skills to subvert and negotiate adult authority and manage unfolding interactions between children and adults. We present findings from a child-centred perspective in a primary school in the United Kingdom.  相似文献   
102.
Abstract. A substantive problem in neuroscience is the lack of valid statistical methods for non‐Gaussian random fields. In the present study, we develop a flexible, yet tractable model for a random field based on kernel smoothing of a so‐called Lévy basis. The resulting field may be Gaussian, but there are many other possibilities, including random fields based on Gamma, inverse Gaussian and normal inverse Gaussian (NIG) Lévy bases. It is easy to estimate the parameters of the model and accordingly to assess by simulation the quantiles of test statistics commonly used in neuroscience. We give a concrete example of magnetic resonance imaging scans that are non‐Gaussian. For these data, simulations under the fitted models show that traditional methods based on Gaussian random field theory may leave small, but significant changes in signal level undetected, while these changes are detectable under a non‐Gaussian Lévy model.  相似文献   
103.
Repeated measures data collected at random observation times are quite common in clinical studies and are often difficult to analyze. A Monte Carlo comparison of four analysis procedures with respect to significance level and power is presented. The basic procedures compared are successive difference analyses and three procedures using the data as summarized in the estimated quadratic polynomial regression coefficients for each subject. These three procedures are (1) Hotelling's T-square, (2) Multivariate Multisample Rank Sum Test (MMRST) and (3) Multivariate Multisample Median Test (MMMT).

For the variety of dispersion structures, sample sizes and treatement groups simulated the MMRST and successive difference analysis were the most satisfactory.  相似文献   
104.
Multivariate (or interchangeably multichannel) autoregressive (MCAR) modeling of stationary and nonstationary time series data is achieved doing things one channel at-a-time using only scalar computations on instantaneous data. The one channel at-a-time modeling is achieved as an instantaneous response multichannel autoregressive model with orthogonal innovations variance. Conventional MCAR models are expressible as linear algebraic transformations of the instantaneous response orthogonal innovations models. By modeling multichannel time series one channel at-a-time, the problems of modeling multichannel time series are reduced to problems in the modeling of scalar autoregressive time series. The three longstanding time series modeling problems of achieving a relatively parsimonious MCAR representation, of multichannel stationary time series spectral estimation and of the modeling of nonstationary covariance time series are addressed using this paradigm.  相似文献   
105.
106.
There has been increasing interest in the measurement of hedonic well-being (HWB), due in part to its broad implications in areas such as health and society. The day reconstruction method (DRM) is a validated technique assessing HWB and daily activities using instructions that help respondents recover their experiences from the previous day, thus reducing recall bias. Unfortunately, large-scale surveys are typically not able to implement the time-consuming DRM procedure; instead, they rely on single-item or very brief questionnaire assessment of HWB and time usage. Despite their wide use, brief questionnaires have rarely been compared to the DRM, which could provide validation of these short assessments. In the present study we compared these two questionnaire formats in 45 adults who completed both a DRM and a “hybrid” short form (HSF) questionnaire that included a very brief procedure to reconstruct yesterday’s events. Results were that the mean HSF ratings tended to overestimate HWB in comparison to the DRM, though effects were generally small to moderate. With regard to estimates of time spent on daily activities, the HSF also differed from the DRM, though with generally small to moderate effects. Correlations between estimates indicated that the HSF explained an average of almost half the variance in the DRM ratings for both HWB (rs ranging from .52 to .97) and time use (rs ranging from .43 to .85). In general, HSF ratings displayed considerable overlap with those of the DRM though the brief instructions apparently did not eliminate recall bias in the shorter questionnaire.  相似文献   
107.
The purpose of this study was to explore (a) faculty members' beliefs about the ethics of reparative therapy and referring lesbian, gay, and bisexual (LGB) clients, (b) course content related to reparative therapy and referral of LGB clients, and (c) positions taken by programs associated with reparative therapy and referral of LGB clients. A total of 117 faculty members from accredited family therapy programs completed an online survey for this study. While the vast majority of faculty members reported that reparative therapy is unethical, there was less agreement related to the ethics of referring LGB clients, which may highlight the need for clearer ethical guidelines to regulate this potentially harmful practice. Implications for clinical training and future research are discussed.  相似文献   
108.
109.
This article is a response to Rozmarin’s re-reading of the biblical story of Lot’s wife in her article “Staying Alive” (this issue). I begin by filling out the intellectual background to and rationale for Rozmarin’s project, which is to re-interpret this story as offering an alternative to the Western cultural law of matricide. I consider some further alternative meanings contained in the figures of Lot’s wife and daughters inspired by but not wholly in agreement with Rozmarin. I conclude by returning to broader questions about the feminist project of stealing female figures from texts of the patriarchal tradition.  相似文献   
110.
A donation paradox occurs when a player gives an apparently valuable prerogative to another player, but does better, according to some criterion. Peremptory challenges, used in choosing a American jury, permit each side to veto a certain number of potential jurors. With even a very simple model of jury selection, it is shown that for one side to give a peremptory challenge to the other side may lead to a more favorable jury, an instance of the donation paradox. Both a theorem and examples are given concerning the existence of the donation paradox in the optimal use of peremptory challenges.  相似文献   
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