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41.
Monica Sharma 《生产规划与管理》2013,24(5):333-353
This article presents the findings of the empirical study of proposed framework of manufacturing excellence (ME) in the Indian industry. The study includes companies from five major sectors, namely automobile, process, machines and equipment, electronics and components and textile. Responses from 90 companies were analysed to explore the validity and reliability of the proposed framework of ME in Indian industry. The developed questionnaire is outlined along with the results obtained from the analysis of the data from the Indian industry. The framework shows high level of reliability and validity. 相似文献
42.
王一妍 《长春理工大学学报(社会科学版)》2010,23(4):60-62
从哲学基础、西方经济学方法论的演变过程、科学抽象法与现象抽象法、资本主义生产方式的批判学说与辩护学说四个方面阐述了《资本论》方法论与西方经济学方法论的不同;又从都注重实证分析法与规范分析法的结合和在制度分析方法上也有交叉阐述了两者的共同点。 相似文献
43.
We propose a semiparametric approach for the analysis of case–control genome-wide association study. Parametric components are used to model both the conditional distribution of the case status given the covariates and the distribution of genotype counts, whereas the distribution of the covariates are modelled nonparametrically. This yields a direct and joint modelling of the case status, covariates and genotype counts, and gives a better understanding of the disease mechanism and results in more reliable conclusions. Side information, such as the disease prevalence, can be conveniently incorporated into the model by an empirical likelihood approach and leads to more efficient estimates and a powerful test in the detection of disease-associated SNPs. Profiling is used to eliminate a nuisance nonparametric component, and the resulting profile empirical likelihood estimates are shown to be consistent and asymptotically normal. For the hypothesis test on disease association, we apply the approximate Bayes factor (ABF) which is computationally simple and most desirable in genome-wide association studies where hundreds of thousands to a million genetic markers are tested. We treat the approximate Bayes factor as a hybrid Bayes factor which replaces the full data by the maximum likelihood estimates of the parameters of interest in the full model and derive it under a general setting. The deviation from Hardy–Weinberg Equilibrium (HWE) is also taken into account and the ABF for HWE using cases is shown to provide evidence of association between a disease and a genetic marker. Simulation studies and an application are further provided to illustrate the utility of the proposed methodology. 相似文献
44.
青年一代社会责任感的培育是一个重大的社会命题,正确的实施策略是完成这一社会命题的关键。本文试图把数学概率理论和数学模型设计方法引入社会责任感的培育方案研究中,并基于实践调查基础上,以实证的方式谋求青年一代社会责任感培育的可行性策略。 相似文献
45.
Asymptotic distributions of regression-type estimators for the parameters of stable distributions am obtained. The asymptotic normalized standard deviations of the estimators are computed for various values of the parameters and various choices of the number of points used in getting the regression estimates. 相似文献
46.
反馈交易规则与股票收益自相关实证分析 总被引:1,自引:0,他引:1
研究了反馈交易规则与上证综合指数日收益自相关之间的联系,样本取自上证指数1992年9月29日至1997年9月30日的日收益率数据。此外,文中采用GARCH(1,1)处理收益波动的异方差性,模型参数采用极大似然估计。实证模型还考虑了非同步交易引起的工序列相关以及反馈交易的非对称性。结果表明,除以往文献涉及的正序列相关外,正反馈交易将导致收益负的序列自相关,且相关系数绝对值随波动增大而增大,从而整个收益表现出随波动变化的序列相关。 相似文献
47.
P.J. Danaher 《Australian & New Zealand Journal of Statistics》1988,30(3):263-275
A three-parameter generalisation of the beta-binomial distribution (BBD) derived by Chandon (1976) is examined. We obtain the maximum likelihood estimates of the parameters and give the elements of the information matrix. To exhibit the applicability of the generalised distribution we show how it gives an improved fit over the BBD for magazine exposure and consumer purchasing data. Finally we derive an empirical Bayes estimate of a binomial proportion based on the generalised beta distribution used in this study. 相似文献
48.
ABSTRACTFor monitoring systemic risk from regulators’ point of view, this article proposes a relative risk measure, which is sensitive to the market comovement. The asymptotic normality of a nonparametric estimator and its smoothed version is established when the observations are independent. To effectively construct an interval without complicated asymptotic variance estimation, a jackknife empirical likelihood inference procedure based on the smoothed nonparametric estimation is provided with a Wilks type of result in case of independent observations. When data follow from AR-GARCH models, the relative risk measure with respect to the errors becomes useful and so we propose a corresponding nonparametric estimator. A simulation study and real-life data analysis show that the proposed relative risk measure is useful in monitoring systemic risk. 相似文献
49.
The estimation of the parameters of two or more geometric distribuionsis considered by usinq an empirical Bayesian approach. Robbins (1983) gave empirical Bayes estimates if the number of distributions N is large, buthere we consider the cascwhore N is small. The parameters of the prior distribution areest imated by looking at maximum like lihood and momentest imation methods. 相似文献
50.
In this paper, we consider the application of the empirical likelihood for linear models under median constraints in view of robustness. For two simple median constraints, it is shown that conditions to ensure the consistency of the empirical likelihood confidence regions can be surprisingly relaxed compared with the normal approach under L norm. However, the coverage accuracy of the empirical likelihood confidence regions based on simple median constrains cannot be improved because of the discontinuity of the constraints. Therefore, a smoothed version of median constraint is proposed and a general theory is established to ensure its validity. 相似文献