全文获取类型
收费全文 | 3885篇 |
免费 | 101篇 |
国内免费 | 24篇 |
专业分类
管理学 | 137篇 |
民族学 | 33篇 |
人口学 | 39篇 |
丛书文集 | 229篇 |
理论方法论 | 63篇 |
综合类 | 1702篇 |
社会学 | 77篇 |
统计学 | 1730篇 |
出版年
2024年 | 6篇 |
2023年 | 12篇 |
2022年 | 22篇 |
2021年 | 24篇 |
2020年 | 62篇 |
2019年 | 79篇 |
2018年 | 106篇 |
2017年 | 138篇 |
2016年 | 78篇 |
2015年 | 86篇 |
2014年 | 167篇 |
2013年 | 790篇 |
2012年 | 299篇 |
2011年 | 167篇 |
2010年 | 176篇 |
2009年 | 137篇 |
2008年 | 183篇 |
2007年 | 198篇 |
2006年 | 190篇 |
2005年 | 178篇 |
2004年 | 171篇 |
2003年 | 150篇 |
2002年 | 114篇 |
2001年 | 96篇 |
2000年 | 90篇 |
1999年 | 46篇 |
1998年 | 30篇 |
1997年 | 39篇 |
1996年 | 37篇 |
1995年 | 32篇 |
1994年 | 15篇 |
1993年 | 18篇 |
1992年 | 13篇 |
1991年 | 10篇 |
1990年 | 7篇 |
1989年 | 9篇 |
1988年 | 9篇 |
1987年 | 4篇 |
1986年 | 2篇 |
1985年 | 3篇 |
1984年 | 1篇 |
1983年 | 3篇 |
1982年 | 1篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1979年 | 4篇 |
1978年 | 3篇 |
排序方式: 共有4010条查询结果,搜索用时 187 毫秒
91.
武汉市固定资产投资与经济增长关系的实证分析 总被引:1,自引:0,他引:1
郝洁 《长江大学学报(社会科学版)》2006,29(6):86-89
固定资产投资是经济增长的一个重要因素,对经济增长具有直接的拉动作用,同时对投资的调节也成为国家宏观调控的一个重要手段。以武汉市为例,选取了年固定资产投资与国内生产总值的数据进行协整分析,并建立了误差修正模型,得出了二者之间存在长期均衡关系。 相似文献
92.
93.
We evaluate the fit of several generalized expected utility models under homoscedasticity and three different heteroscedastic
error structures for the data set first reported in Hey and Orme (1994). Standard chi-squared tests are used for nested tests,
and both the Akaike (1973) information criterion and its consistent version (Hurvich and Tsai, 1989) are used for non-nested
ranking of these models. A testing framework is developed that explicitly accounts for the path-dependent nature of the model
selection problem. Not only does the selection of preference models depend on the error structure assumed, but the reverse
is also true: the selection of the error structure depends on the preference structure assumed.
An erratum to this article is available at . 相似文献
94.
In this paper we investigate the asymptotic critical value behaviour of certain multiple decision procedures as e.g. simultaneous confidence intervals and simultaneous as well as stepwise multiple test procedures. Supposing that n hypotheses or parameters of interest are under consideration we investigate the critical value behaviour when n increases. More specifically, we answer e.g. the question by which amount the lengths of confidence intervals increase when an additional parameter is added to the statistical analysis. Furthermore, critical values of different multiple decision procedures as for instance step-down and step-up procedures will be compared. Some general theoretic results are derived and applied for various distributions. 相似文献
95.
Anirban Dasgupta George Casella Mohan Delampady Christian Genest William E. Strawderman Herman Rubin 《Revue canadienne de statistique》2000,28(4):675-687
The authors consider the correlation between two arbitrary functions of the data and a parameter when the parameter is regarded as a random variable with given prior distribution. They show how to compute such a correlation and use closed form expressions to assess the dependence between parameters and various classical or robust estimators thereof, as well as between p‐values and posterior probabilities of the null hypothesis in the one‐sided testing problem. Other applications involve the Dirichlet process and stationary Gaussian processes. Using this approach, the authors also derive a general nonparametric upper bound on Bayes risks. 相似文献
96.
Peter Hall Stephen M.-S. Lee & G. Alastair Young 《Journal of the Royal Statistical Society. Series B, Statistical methodology》2000,62(2):479-491
We show that, in the context of double-bootstrap confidence intervals, linear interpolation at the second level of the double bootstrap can reduce the simulation error component of coverage error by an order of magnitude. Intervals that are indistinguishable in terms of coverage error with theoretical, infinite simulation, double-bootstrap confidence intervals may be obtained at substantially less computational expense than by using the standard Monte Carlo approximation method. The intervals retain the simplicity of uniform bootstrap sampling and require no special analysis or computational techniques. Interpolation at the first level of the double bootstrap is shown to have a relatively minor effect on the simulation error. 相似文献
97.
Bartlett correction constitutes one of the attractive features of empirical likelihood because it enables the construction of confidence regions for parameters with improved coverage probabilities. We study the Bartlett correction of spatial frequency domain empirical likelihood (SFDEL) based on general spectral estimating functions for regularly spaced spatial data. This general formulation can be applied to testing and estimation problems in spatial analysis, for example testing covariance isotropy, testing covariance separability as well as estimating the parameters of spatial covariance models. We show that the SFDEL is Bartlett correctable. In particular, the improvement in coverage accuracies of the Bartlett‐corrected confidence regions depends on the underlying spatial structures. The Canadian Journal of Statistics 47: 455–472; 2019 © 2019 Statistical Society of Canada 相似文献
98.
In survey research, it is assumed that reported response by the individual is correct. However, given the issues of prestige bias, self-respect, respondent's reported data often produces estimated values which are highly deviated from the true values. This causes measurement error (ME) to be present in the sample estimates. In this article, the estimation of population mean in the presence of measurement error using information on a single auxiliary variable is studied. A generalized estimator of population mean is proposed. The class of estimators is obtained by using some conventional and non-conventional measures. Simulation and numerical study is also conducted to assess the performance of estimators in the presence and absence of measurement error. 相似文献
99.
Jorge Quiroz Richard Montes Heliang Shi Satrajit Roychoudhury 《Pharmaceutical statistics》2019,18(3):316-328
Assessment of analytical similarity of tier 1 quality attributes is based on a set of hypotheses that tests the mean difference of reference and test products against a margin adjusted for standard deviation of the reference product. Thus, proper assessment of the biosimilarity hypothesis requires statistical tests that account for the uncertainty associated with the estimations of the mean differences and the standard deviation of the reference product. Recently, a linear reformulation of the biosimilarity hypothesis has been proposed, which facilitates development and implementation of statistical tests. These statistical tests account for the uncertainty in the estimation process of all the unknown parameters. In this paper, we survey methods for constructing confidence intervals for testing the linearized reformulation of the biosimilarity hypothesis and also compare the performance of the methods. We discuss test procedures using confidence intervals to make possible comparison among recently developed methods as well as other previously developed methods that have not been applied for demonstrating analytical similarity. A computer simulation study was conducted to compare the performance of the methods based on the ability to maintain the test size and power, as well as computational complexity. We demonstrate the methods using two example applications. At the end, we make recommendations concerning the use of the methods. 相似文献
100.
A smoothed bootstrap method is presented for the purpose of bandwidth selection in nonparametric hazard rate estimation for iid data. In this context, two new bootstrap bandwidth selectors are established based on the exact expression of the bootstrap version of the mean integrated squared error of some approximations of the kernel hazard rate estimator. This is very useful since Monte Carlo approximation is no longer needed for the implementation of the two bootstrap selectors. A simulation study is carried out in order to show the empirical performance of the new bootstrap bandwidths and to compare them with other existing selectors. The methods are illustrated by applying them to a diabetes data set. 相似文献