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51.
This paper is concerned with cases in which patients who have been well established in treatment decide to end it prematurely. In examining the issue among my patients who left against my advice, I isolated in some of them a number of common traits, of which the existence of a long-standing idealizing transference was central. Four of these cases are presented, including two in which the resistance was successfully penetrated and two in which it was not and the patient left treatment. The definition of premature termination is seen in the context of that of a complete analysis.  相似文献   
52.
Abstract.  We consider the problem of estimating a compactly supported density taking a Bayesian nonparametric approach. We define a Dirichlet mixture prior that, while selecting piecewise constant densities, has full support on the Hellinger metric space of all commonly dominated probability measures on a known bounded interval. We derive pointwise rates of convergence for the posterior expected density by studying the speed at which the posterior mass accumulates on shrinking Hellinger neighbourhoods of the sampling density. If the data are sampled from a strictly positive, α -Hölderian density, with α  ∈ ( 0,1] , then the optimal convergence rate n− α / (2 α +1) is obtained up to a logarithmic factor. Smoothing histograms by polygons, a continuous piecewise linear estimator is obtained that for twice continuously differentiable, strictly positive densities satisfying boundary conditions attains a rate comparable up to a logarithmic factor to the convergence rate n −4/5 for integrated mean squared error of kernel type density estimators.  相似文献   
53.
中学教师继续教育工程已全面展开.在对中学历史教师继续教育的实践过程中,我们发现尚存在观念滞后、学员缺乏学习的动机、师资队伍不适应、经费紧张等问题.针对这些问题,应采取相应的对策更新观念、采取灵活的培训方法、加强师资队伍建设、完善评估体系、严格管理、增加投入等.  相似文献   
54.
We propose four different GMM estimators that allow almost consistent estimation of the structural parameters of panel probit models with fixed effects for the case of small Tand large N. The moments used are derived for each period from a first order approximation of the mean of the dependent variable conditional on explanatory variables and on the fixed effect. The estimators differ w.r.t. the choice of instruments and whether they use trimming to reduce the bias or not. In a Monte Carlo study, we compare these estimators with pooled probit and conditional logit estimators for different data generating processes. The results show that the proposed estimators outperform these competitors in several situations.  相似文献   
55.
伊拉克战争后的中东战略格局   总被引:1,自引:0,他引:1  
美国发动的伊拉克战争是美国试图建立美国控制下的单极世界的第一场战争.美国在取得战争的胜利后,将在中东建立美国主导下的中东格局,并加紧实施其全球战略.中东政治力量在战后纷纷重组,尤以伊朗的海湾安全战略和以色列的中东超级大国地位确立最为典型。美国主导下的中东虽不会发生大的战争,但中东依旧是动荡之源,未来走势充满变数.  相似文献   
56.
Previous research concerned with children's belief-desire psychology has examined the capacity to predict or interpret action on the basis of the implicit proposition that ‘when an actor desires a particular end and believes that a particular action will achieve that end, he or she will undertake that action’. The limitations of this formulation for understanding acts of omission are outlined and an elaborated version of belief-desire psychology introduced. This version holds that ‘when an actor desires a particular end and believes that a particular action will achieve that end, and when it is believed that there are no co-occurring outcomes of that action whose avoidance is desired more highly than is the originally conceived end, then the actor will undertake the action which will satisfy the original desire’. An experiment is reported which examines 4-, 5, and 7-year-olds' ability to predict story characters' actions on the basis of either their true or false beliefs concerning undesirable outcomes associated with the pursuit of a desired end. Children of all age-groups provided evidence of understanding the elaborated version of belief-desire psychology. However, a significant improvement was noted between the ages of 4 and 7 years in the ability to understand circumstances involving false beliefs.  相似文献   
57.
教育是人力资源开发的主导形式,高校办学定位直接影响着人才培养的类型和规格。适应科学技术的发展和社会经济增长方式的转变,高校办学定位必须与时俱进,不断调整和革新。在当前和今后相当长一段时间,高师院校必须走“以师为本、综合发展”之路。  相似文献   
58.
What do we mean by progress and cumulation in the social and human sciences? Recent thinking in the philosophy and history of science has led to an abandonment of some versions of logical positivism and of verificationism that had a strong deductive and theory testing orientation. What is to replace them is less clear. This paper argues that progress and cumulation can be seen as a process of evaluation and retention within an epistemic community. Scholarly disciplines differ in their social structure and in their epistemic and normative commitments. Since sociology is a fragmented discipline, progress and cumulation differ within its multiple subdisciplines, which to varying extents represent epistemic communities. Brief sketches of progress (advance) and cumulation in several subdisciplines are offered.  相似文献   
59.
作者运用理论分析和实证分析相结合的方法对佛山市经济发展的实践予以深刻剖视后指出:佛山市经济建设处在从物质投入主导型向科技进步主导塑转变的转折点上,在跨世纪的经济发展与经济竞争中,佛山市必须实行科技兴市的新发展战略,作者对佛山市科技兴市战略的涵义,目标,条件作了深入分析,并进而设计了科技兴市战略的运行机制和政策落点。  相似文献   
60.
A training project in a northern Canadian community providedan opportunity to examine participatory planning approachesand the meaning of work in First Nations communities. Focusgroups conducted three years after the unsuccessful interventionof a community economic development (CED) project suggest thatcomplex factors such as lack of support from community leadersand rate of pay for workers determine whether CED is alwaysappropriate in northern, First Nations contexts.  相似文献   
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