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81.
82.
Michael Kohler 《AStA Advances in Statistical Analysis》2008,92(2):153-178
American options in discrete time can be priced by solving optimal stopping problems. This can be done by computing so-called
continuation values, which we represent as regression functions defined recursively by using the continuation values of the
next time step. We use Monte Carlo to generate data, and then we apply smoothing spline regression estimates to estimate the
continuation values from these data. All parameters of the estimate are chosen data dependent. We present results concerning
consistency and the estimates’ rate of convergence. 相似文献
83.
84.
This paper proposes an experimental test to evaluate the performance of the serial cost sharing rule, originally proposed
by Shenker [Sigmetrics, 241–242 (1990)] and then analyzed by Moulin and Shenker [Econometrica 60, 1009–1037 (1992)]. We report
measures of the performance and efficiency of the serial mechanism by comparing the choices and payoffs attained by the subjects
to the expected equilibrium allocations. Experimental evidence shows that learning is needed for the subjects to converge
to the equilibrium strategy. However, in terms of efficiency, the serial mechanism leads to almost efficient allocations. 相似文献
85.
86.
The training of medical practitioners to improve the practitioner/patient relationship may be difficult, as limitations often exist on the choice of patients included in the study. A specific study of this type of training is given. It is proposed that a simple modification and generalization of Yates' plaid-square designs be used. It is shown that a replicated plaid-design incorporates as a special case the criss-cross or strip-plot design. The usefulness of these designs in studies of the training of medical practitioners is illustrated. The basic characteristics of their analysis are outlined. 相似文献
87.
88.
89.
Neil Duncan 《Disability & Society》2003,18(3):341-356
This article selectively reports on a small-scale qualitative exploration of the experiences of families who had undergone recent conflict with special educational needs (SEN) professionals. The data were collected over the spring and summer terms of 2001 from 10 families in two local education authorities (LEAs) in the English midlands. The research aimed to examine the parents' perspectives on points of conflict or dissatisfaction between themselves and education professionals. It was concerned with the parents' points of view regarding their pursuit of desired outcomes for their children and the factors that helped or hindered their endeavours. The project found that the parents' negotiation of the SEN system was held by them to be exceptionally difficult and stressful compared to other troubling issues in their lives. The research suggests that dissatisfactions with SEN provision have important implications for the management of LEA Parent partnership Schemes (PPS) in ameliorating the differences between parental aspirations and governmental ambition. 相似文献
90.
Gay affirmative practice has recently been introduced into the social work literature as a culturally sensitive model for
working with gay, lesbian, and bisexual (GLB) adults, however, this model has rarely been applied to practice with GLB youth.
In this article, the authors review the literature to present the main tenets of gay affirmative practice, outline the challenges
that GLB youth face, and delineate the environmental and individual strengths that can be enhanced to promote well-being.
The authors then apply the gay affirmative practice model to GLB youth, offering concrete information about the specific knowledge,
attitudes, and skills that social workers should acquire to better serve the unique, yet diverse, needs of GLB youth. 相似文献