全文获取类型
收费全文 | 557篇 |
免费 | 2篇 |
专业分类
管理学 | 86篇 |
民族学 | 3篇 |
人口学 | 47篇 |
丛书文集 | 4篇 |
理论方法论 | 49篇 |
综合类 | 1篇 |
社会学 | 272篇 |
统计学 | 97篇 |
出版年
2020年 | 7篇 |
2019年 | 10篇 |
2018年 | 12篇 |
2017年 | 11篇 |
2016年 | 6篇 |
2014年 | 13篇 |
2013年 | 72篇 |
2012年 | 16篇 |
2011年 | 16篇 |
2010年 | 18篇 |
2009年 | 10篇 |
2008年 | 17篇 |
2007年 | 18篇 |
2006年 | 14篇 |
2005年 | 13篇 |
2004年 | 11篇 |
2003年 | 14篇 |
2002年 | 18篇 |
2001年 | 15篇 |
2000年 | 13篇 |
1999年 | 15篇 |
1998年 | 11篇 |
1997年 | 6篇 |
1996年 | 8篇 |
1995年 | 6篇 |
1994年 | 11篇 |
1993年 | 12篇 |
1992年 | 13篇 |
1991年 | 18篇 |
1990年 | 7篇 |
1989年 | 4篇 |
1988年 | 7篇 |
1987年 | 7篇 |
1986年 | 4篇 |
1985年 | 9篇 |
1984年 | 7篇 |
1983年 | 10篇 |
1982年 | 9篇 |
1981年 | 8篇 |
1980年 | 5篇 |
1979年 | 5篇 |
1978年 | 6篇 |
1977年 | 3篇 |
1976年 | 8篇 |
1975年 | 8篇 |
1974年 | 4篇 |
1973年 | 5篇 |
1971年 | 2篇 |
1969年 | 3篇 |
1968年 | 3篇 |
排序方式: 共有559条查询结果,搜索用时 15 毫秒
81.
For vectors z and w and scalar v, let r(v, z, w) be a function that can be nonparametrically estimated consistently and asymptotically normally, such as a distribution, density, or conditional mean regression function. We provide consistent, asymptotically normal nonparametric estimators for the functions G and H, where r(v, z, w) = H[vG(z), w], and some related models. This framework encompasses homothetic and homothetically separable functions, and transformed partly additive models r(v, z, w) = h[v + g(z), w] for unknown functions gand h Such models reduce the curse of dimensionality, provide a natural generalization of linear index models, and are widely used in utility, production, and cost function applications. We also provide an estimator of Gthat is oracle efficient, achieving the same performance as an estimator based on local least squares when H is known. 相似文献
82.
The Analysis of Crop Variety Evaluation Data in Australia 总被引:5,自引:0,他引:5
Alison Smith Brian Cullis & Arthur Gilmour 《Australian & New Zealand Journal of Statistics》2001,43(2):129-145
The major aim of crop variety evaluation is to predict the future performance of varieties. This paper presents the routine statistical analysis of data from late-stage testing of crop varieties in Australia. It uses a two-stage approach for analysis. The data from individual trials from the current year are analysed using spatial techniques. The resultant table of variety-by-trial means is combined with tables from previous years to form the data for an overall mixed model analysis. Weights allow for the data being estimates with varying accuracy. In view of the predictive aim of the analysis, variety effects and interactions are regarded as random effects. Appropriate inferential tools have been developed to assist with interpretation of the results. Analyses must be conducted in a timely manner so that variety predictions can be published and disseminated to growers immediately after harvest each year. Factors which facilitate this include easy access to historic data and the use of specialist mixed model software. 相似文献
83.
This paper focuses on the role of corporate financial strategies to improve their market valuations and lower their cost of capital. The identification of successful strategies is accomplished within an overall strategic framework. The paper is built on 12 longitudinal case studies from the Nordic countries to illustrate the linkages between business strategy, firm motivation, and various financial strategies. 相似文献
84.
85.
Arthur G. Holms 《统计学通讯:模拟与计算》2013,42(1):51-71
As many as three iterated statistical model deletion procedures are considered for an experiment.Population model coeff cients were chosen to simulate a saturated 24experiment having an unfavorable distribution of parameter values.Using random number studies, three model selection strategies were developed, namely, (1) a strategy to be used in anticipation of large coefficients of variation (neighborhood of 65 percent), (2) strategy to be used in anticipation of small coefficients of variation (4 percent or less), and (3) a security regret strategy to be used in the absence of such prior knowledge 相似文献
86.
It appears to be common practice with ridge regression to obtain a decomposition of the total sum of squares, and assign degrees of freedom, according to established least squares theory. This discussion notes the obvious fallacies of such an approach, and introduces a decomposition based on orthogonality, and degrees of freedom based on expected mean squares, for non-stochastic k. 相似文献
87.
88.
89.
In this paper the robustness of Brass's child-survivorship indirect mortality estimation technique is investigated. An analytical method is developed for studying the error or bias caused in indirect mortality estimates by poor data, badly chosen model functions, and specific demographic assumptions that are often violated in practice. The resulting analytical expressions give insight into the rationale of indirect methods, the conditions under which they are robust, and the magnitude of errors that occur when specific assumptions are violated. 相似文献
90.