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271.
We consider the linear regression modely=Xβ+u with prior information on the unknown parameter vector β. The additional information on β is given by a fuzzy set. Using
the mean squared error criterion we derive linear estimators that optimally combine the data with the fuzzy prior information.
Our approach generalizes the classical minimax procedure firstly proposed by Kuks and Olman. 相似文献
272.
Verdery Katherine Bernhard Michael Kopstein Jeffrey Stokes Gale Kennedy Michael D. 《Theory and Society》2005,34(1):1-36
These essays were originally presented at a symposium of the same title that took place at the annual meeting of the American Association of the Advancement of Slavic Studies in Toronto on November 20, 2003. The charge to the participants was to to reread the book and make short presentations on it, its significance, the validity of its analysis in hindsight, its historical contribution to our understanding of late communism, its influence on others. The symposium was timed to commemorate the thirtieth anniversary of writing of the book in 1973–1974 as well as the twenty-fifth anniversary of its publication in English in 1979. 相似文献
273.
274.
W. Gleißner 《Statistical Papers》1990,31(1):241-250
In [EiV1] and [EiV2] a set of axioms based on sound economic reasoning was introduced, which a function should satisfy in order to be called a price index. There the problem was already posed how to characterize these sets of functions in mathematical terms. After introducing, for mathematical reasons only, a slight generalization of the axioms this paper presents one possible solution of this problem. 相似文献
275.
Human life expectancy has risen in most developed countries over the last century, causing the observed demographic shifts.
Babel, Bomsdorf and Schmidt (forthcoming) introduce a stochastic mortality model using panel data procedures which distinguishes
between a common time effect and a common age effect of mortality evolvement. Using this mortality model, the present paper
provides forecasts of future life expectancy for 17 countries divided into 12 regions: Australia, Alps, Bene, Canada, England
and Wales, France, Germany, Italy, Japan, Spain, Scandinavia and the United States of America. We consider (traditional) period
life expectancies as well as cohort life expectancies, the latter being a more realistic approach but less common. It turns
out that a continuing increase of life expectancy is expected in all considered countries. Further, we show that the probabilistic
uncertainty of forecast life expectancies is different if either period life expectancies or cohort life expectancies are
considered and, moreover, the uncertainty increases substantially if the error of parameter estimation is included. 相似文献
276.
Bernhard Boockmann Thomas Zwick Andreas Ammermüller Michael Maier 《Journal of the European Economic Association》2012,10(4):735-764
Abstract We estimate the effects of hiring subsidies for older workers on transitions from unemployment to employment in Germany. Using a natural experiment, our first set of estimates is based on a legal change extending the group of eligible unemployed persons. A subsequent legal change in the opposite direction is used to validate these results. Our data cover the population of unemployed jobseekers in Germany and was specifically made available for our purposes from administrative data. Consistent support for an employment effect of hiring subsidies can only be found for women in East Germany. Concerning other population groups, firms’ hiring behavior is hardly influenced by the program and hiring subsidies mainly lead to deadweight effects. (JEL: J64, H24, C31) 相似文献
277.
278.
A common strategy for avoiding information overload in multi-factor paired comparison experiments is to employ pairs of options which have different levels for only some of the factors in a study. For the practically important case where the factors fall into three groups such that all factors within a group have the same number of levels and where one is only interested in estimating the main effects, a comprehensive catalogue of D-optimal approximate designs is presented. These optimal designs use at most three different types of pairs and have a block diagonal information matrix. 相似文献
279.
We propose to use the term standard distance for the quantity in univariate analysis and show that it can be easily generalized to the multivariate situation, where it coincides with the square root of the Mahalanobis distance between two samples. 相似文献
280.
Christian H. Weiß 《Statistics》2013,47(3):494-510
The modelling and analysis of count-data time series are areas of emerging interest with various applications in practice. We consider the particular case of the binomial AR(1) model, which is well suited for describing binomial counts with a first-order autoregressive serial dependence structure. We derive explicit expressions for the joint (central) moments and cumulants up to order 4. Then, we apply these results for expressing moments and asymptotic distribution of the squared difference estimator as an alternative to the sample autocovariance. We also analyse the asymptotic distribution of the conditional least-squares estimators of the parameters of the binomial AR(1) model. The finite-sample performance of these estimators is investigated in a simulation study, and we apply them to real data about computerized workstations. 相似文献