首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   56篇
  免费   0篇
管理学   23篇
人口学   2篇
理论方法论   4篇
社会学   17篇
统计学   10篇
  2022年   2篇
  2021年   1篇
  2020年   1篇
  2019年   1篇
  2018年   2篇
  2017年   3篇
  2016年   3篇
  2015年   1篇
  2014年   2篇
  2013年   9篇
  2012年   1篇
  2011年   2篇
  2010年   1篇
  2007年   1篇
  2006年   2篇
  2005年   1篇
  2004年   1篇
  2003年   3篇
  2002年   2篇
  2000年   2篇
  1999年   2篇
  1998年   2篇
  1997年   1篇
  1996年   1篇
  1995年   1篇
  1991年   1篇
  1988年   1篇
  1987年   1篇
  1982年   2篇
  1978年   1篇
  1977年   1篇
  1976年   1篇
排序方式: 共有56条查询结果,搜索用时 15 毫秒
1.
2.
Mutchler JE  Prakash A  Burr JA 《Demography》2007,44(2):251-263
Using data from the 2000 U.S. census, we compare the older Asian population with U.S.-born, non-Hispanic whites with respect to three indicators of disability. Insofar as any Asian "advantage" in health vis-a-vis whites exists among the population aged 65 and over, our evidence suggests that it occurs primarily among the U.S.-born segments of this population. We also investigate how differences in disability levels among Asian immigrant groups are influenced by country of birth and by the combined effects of duration of residence in the United States and life cycle stage at entry. These results highlight the diversity of the older Asian population with respect to the ways in which immigration and origin history are linked to disability outcomes. We conclude that in later life, immigrant status confers few disability advantages among the Asian population in the United States.  相似文献   
3.
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - An extensive literature identifies conditions under which markets and states work efficiently and effectively toward their...  相似文献   
4.
A theory of coarse utility   总被引:1,自引:0,他引:1  
  相似文献   
5.
Mixtures of truncated exponentials (MTE) potentials are an alternative to discretization and Monte Carlo methods for solving hybrid Bayesian networks. Any probability density function (PDF) can be approximated by an MTE potential, which can always be marginalized in closed form. This allows propagation to be done exactly using the Shenoy-Shafer architecture for computing marginals, with no restrictions on the construction of a join tree. This paper presents MTE potentials that approximate standard PDF’s and applications of these potentials for solving inference problems in hybrid Bayesian networks. These approximations will extend the types of inference problems that can be modelled with Bayesian networks, as demonstrated using three examples.  相似文献   
6.
A smoothing parameter inversely proportional to the square root of the true density is known to produce kernel estimates of the density having faster bias rate of convergence. We show that in the case of kernel-based nonparametric hazard rate estimation, a smoothing parameter inversely proportional to the square root of the true hazard rate leads to a mean square error rate of order n ?8/9, an improvement over the standard second order kernel. An adaptive version of such a procedure is considered and analyzed.  相似文献   
7.
A common practice in product distribution is the case in which the supplier offers a temporary reduction in price. It is suggested in the literature that in such situations, the reseller may engage in forward buying (i.e., purchasing additional stock at the reduced price offered by the supplier for later sale at the regular selling price). In this paper, a model is formulated of the reseller's response when the supplier offers a temporary reduction in price. It is assumed that the market demand for the product is elastic with respect to the selling price the reseller sets. A procedure for determining the optimal response of the reseller is developed. The model presented in this paper can easily be adapted to the case in which the reseller faces a permanent increase in the price charged by the supplier.  相似文献   
8.
ABSTRACT

This article provides a conceptual framework for incorporating the array of variables defined in maternal health research in order to explicate their influence on problems of safe motherhood. Focusing an overview of the articles in this collection, in addition to strategies and policies needed from practitioners' perspectives and finding from case studies, research findings from a variety of countries are provided. Factors influencing positive outcomes such as age of mother, skilled attendants at delivery, and prenatal care are considered. The importance of the political and economic structure and stability of the country which plays an important role is discussed.  相似文献   
9.
This paper presents an empirical study of green supply chain management (GSCM) practices in the Micro, small and medium enterprises (MSMEs) in India. Although the research in the area of GSCM has grown in recent times, the literature has yet to furnish an accepted explanation for why green practices are to be manifested in supply chain management given external and internal pressures. These MSMEs have been involved in such green supply chain practices only to the extent of their participation as suppliers, distributors and in other capacities as business partners. This study confirms and validates that Indian MSMEs face significant pressures from external stakeholders to adopt GSCM practices. Among internal pressures, on-the-job training forces MSMEs in India to adopt GSCM practices. It has been also established that external pressures and adoption of GSCM are fully mediated by internal pressures.  相似文献   
10.
An important problem in the planning of political campaigns is the allocation of resources to precincts and other geographical voting units in order to maximize a candidate's plurality. Essentially, parties may increase candidate plurality by engaging in registration drives, midcampaign activities such as canvassing and candidate appearances, and get-out-the-vote drives. Based on previous work which has related voter response to party identification, the authors develop a model for the optimal allocation of campaign resources to these activities. The computational feasibility of the solution procedure is made possible by a decomposition across activities.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号