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   1521篇
  免费   55篇
管理学   204篇
民族学   20篇
人口学   132篇
丛书文集   12篇
理论方法论   136篇
现状及发展   1篇
综合类   12篇
社会学   848篇
统计学   211篇
  2023年   12篇
  2022年   8篇
  2021年   20篇
  2020年   34篇
  2019年   40篇
  2018年   54篇
  2017年   54篇
  2016年   47篇
  2015年   39篇
  2014年   40篇
  2013年   299篇
  2012年   56篇
  2011年   65篇
  2010年   41篇
  2009年   39篇
  2008年   62篇
  2007年   40篇
  2006年   41篇
  2005年   35篇
  2004年   31篇
  2003年   29篇
  2002年   41篇
  2001年   32篇
  2000年   28篇
  1999年   25篇
  1998年   20篇
  1997年   12篇
  1996年   21篇
  1995年   24篇
  1994年   19篇
  1993年   10篇
  1992年   12篇
  1991年   18篇
  1990年   19篇
  1989年   14篇
  1988年   11篇
  1987年   12篇
  1986年   8篇
  1985年   19篇
  1984年   11篇
  1983年   14篇
  1982年   16篇
  1981年   14篇
  1980年   12篇
  1979年   12篇
  1978年   9篇
  1976年   11篇
  1975年   9篇
  1974年   6篇
  1972年   5篇
排序方式: 共有1576条查询结果,搜索用时 265 毫秒
851.
852.
853.
854.
855.
Currier JM  Holland JM  Neimeyer RA 《Omega》2008,57(2):121-141
Clinical professionals working in end-of-life (EOL) contexts are frequently relied upon to address questions of meaning with dying and bereaved persons. Similar to the gulf between researchers and practitioners besetting the larger healthcare community, the voices of EOL practitioners are often underrepresented in the empirical literature. This study aimed to further the dialogue in the field of thanatology by surveying and describing the therapeutic approaches that EOL practitioners most commonly report using to facilitate meaning-making. A total of 119 practitioners from a range of EOL disciplines were surveyed to write about their intervention strategies for helping clients/patients make sense of loss. Overall, participants discussed using 23 different therapeutic approaches that comprised three overarching categories: 1) presence of the helping professional; 2) elements of the process; and 3) therapeutic procedures. Importantly, the results also indicated that practitioners from the different EOL occupations are converging on many of the same strategies for promoting meaning-making. Implications for future research on evaluating the effectiveness of meaning-making interventions are also discussed.  相似文献   
856.
Physicians' and hospitals' strategies often diverge--with poor results for both. The causes of this divergence are many. They include different methods of payment, divisive governmental regulations (like Stark) and cultural differences.  相似文献   
857.
Although several authors have indicated that the median test has low power in small samples, it continues to be presented in many statistical textbooks, included in a number of popular statistical software packages, and used in a variety of application areas. We present results of a power simulation study that shows that the median test has noticeably lower power, even for the double exponential distribution for which it is asymptotically most powerful, than other readily available rank tests. We suggest that the median test be “retired” from routine use and recommend alternative rank tests that have superior power over a relatively large family of symmetric distributions.  相似文献   
858.
Various methods for “Studentizing” the sample median are com-pared on the basis of a Monte Carlo study. Several of the methods do rather poorly while two, the bootstrap and the standardized length of a distribution free confidence interval, behave accept-ably acrors a wide range of sample sizes and several distributions of varying tail length. These two methods seem to agree closely with the distribution free confidence intervals and moreover, un-like these intervals, the methods can be extended to a method of accurate inference for λ1 regreasion.  相似文献   
859.
This paper compares minimum distance estimation with best linear unbiased estimation to determine which technique provides the most accurate estimates for location and scale parameters as applied to the three parameter Pareto distribution. Two minimum distance estimators are developed for each of the three distance measures used (Kolmogorov, Cramer‐von Mises, and Anderson‐Darling) resulting in six new estimators. For a given sample size 6 or 18 and shape parameter 1(1)4, the location and scale parameters are estimated. A Monte Carlo technique is used to generate the sample sets. The best linear unbiased estimator and the six minimum distance estimators provide parameter estimates based on each sample set. These estimates are compared using mean square error as the evaluation tool. Results show that the best linear unbaised estimator provided more accurate estimates of location and scale than did the minimum estimators tested.  相似文献   
860.
In this paper, we propose a general class of Gamma frailty transformation models for multivariate survival data. The transformation class includes the commonly used proportional hazards and proportional odds models. The proposed class also includes a family of cure rate models. Under an improper prior for the parameters, we establish propriety of the posterior distribution. A novel Gibbs sampling algorithm is developed for sampling from the observed data posterior distribution. A simulation study is conducted to examine the properties of the proposed methodology. An application to a data set from a cord blood transplantation study is also reported.  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