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191.
公共服务的多元主体间互动机制分析 总被引:2,自引:0,他引:2
公共服务是公共服务的治理者、服务供应者、服务生产者、服务消费者四类主体之间的互动过程。本文通过对公共服务中主体角色的细分,探讨了公共服务过程中多元主体的互动关系。文章结合公共服务中的责任、权限、运行机制等制度安排以及与特定制度安排相适应的公共服务政策及工具体系,对我国公共服务的现状及将来的发展进行了研究。 相似文献
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Social Indicators Research - China has seen an unprecedented increase in rural-to-urban migrants in the last three decades, and the extension of welfare programmes to these migrants has been a... 相似文献
195.
Morgan S. Philip Botev Nikolai Chen Renbao Huang Jianping 《Population research and policy review》1999,18(4):339-356
The magnitude of racial differences in first birth timing vary greatly depending upon the data sources from which they are estimated. Vital registration data (Heuser 1976; with updates from the National Center for Health Statistics 1974–1990) show that in recent years nonwhites have higher risks of a first birth at virtually all ages compared to whites. As a result very large and historically novel differentials in childlessness are forecast using these data (see Rindfuss et al. 1988; Chen & Morgan 1991; Morgan & Chen 1992). However, retrospective fertility history data collected from the 1980, 1985 and 1990 Current Population Surveys (CPS) suggest much smaller racial differences in completed childlessness and isolate racial differences in probabilities of first births at young ages. Differences also exist between theses two series for whites prior to the mid-1960s but not afterwards. Reasons for these differing estimates are suggested and examined. We conclude that a substantial portion of the differences result from an accumulation of biases in the vital registration estimates that affect primarily estimates of first birth timing. Thus, the CPS data provide a more firm basis for racial comparisons of first birth timing. 相似文献
196.
Yong Huang 《当代中国人口》2012,(1):42-48
Admirable persistence I don ’t have much knowledge about printmaking. For Chinese printmaking, I even know much less. What I can get in my memory about printmaking are only 相似文献
197.
Lifetime Data Analysis - The aim of this study is to provide an analysis of gap event times under the illness–death model, where some subjects experience “illness” before... 相似文献
198.
Recent studies have demonstrated theoretical attractiveness of a class of concave penalties in variable selection, including the smoothly clipped absolute deviation and minimax concave penalties. The computation of the concave penalized solutions in high-dimensional models, however, is a difficult task. We propose a majorization minimization by coordinate descent (MMCD) algorithm for computing the concave penalized solutions in generalized linear models. In contrast to the existing algorithms that use local quadratic or local linear approximation to the penalty function, the MMCD seeks to majorize the negative log-likelihood by a quadratic loss, but does not use any approximation to the penalty. This strategy makes it possible to avoid the computation of a scaling factor in each update of the solutions, which improves the efficiency of coordinate descent. Under certain regularity conditions, we establish theoretical convergence property of the MMCD. We implement this algorithm for a penalized logistic regression model using the SCAD and MCP penalties. Simulation studies and a data example demonstrate that the MMCD works sufficiently fast for the penalized logistic regression in high-dimensional settings where the number of covariates is much larger than the sample size. 相似文献
199.
We propose a new biclustering method for binary data matrices using the maximum penalized Bernoulli likelihood estimation. Our method applies a multi-layer model defined on the logits of the success probabilities, where each layer represents a simple bicluster structure and the combination of multiple layers is able to reveal complicated, multiple biclusters. The method allows for non-pure biclusters, and can simultaneously identify the 1-prevalent blocks and 0-prevalent blocks. A computationally efficient algorithm is developed and guidelines are provided for specifying the tuning parameters, including initial values of model parameters, the number of layers, and the penalty parameters. Missing-data imputation can be handled in the EM framework. The method is tested using synthetic and real datasets and shows good performance. 相似文献
200.
Yang Yang Jinguan Lin Chao Huang Xin Ma 《Journal of the Korean Statistical Society》2012,41(2):213-224
This paper considers an ordinary renewal risk model and a compound renewal risk model with constant interest rate, subexponential claims and a general premium process. We derive some asymptotic results on the finite-time ruin probabilities. 相似文献