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101.
T. Palanisamy 《统计学通讯:模拟与计算》2017,46(6):4991-5001
We propose a variational mode decomposition approach to estimate the variance function in a nonparametric heteroscedastic fixed design regression model. A data-driven estimator is constructed by applying variational mode decomposition technique to the difference-based initial estimates. The numerical results show that the proposed estimator performs better than the existing variance estimation procedures in the mean square sense. 相似文献
102.
This paper applies stratified random sampling using Neyman allocation to Mangat et al. (1992) unrelated question randomized response (RR) strategy for both completely truthful reporting and less than completely truthful reporting. It is shown that, for the prior information given, our new model is more efficient in terms of variance (in the case of completely truthful reporting) and mean square error (in terms of less than completely truthful reporting) than Kim and Elam's (2007) model. Numerical illustrations and graphs are also given in support of the present study. 相似文献
103.
The crux of this article is to estimate the mean of the number of persons possessing a rare sensitive attribute based on the Mangat (1991) randomization device by utilizing the Poisson distribution in simple random sampling and stratified sampling. Properties of the proposed randomized response (RR) model have been studied along with recommendations. It is also shown that the proposed model is more efficient than that of Land et al. (2011) in simple random sampling and that of Lee et al. (2013) in stratified random sampling when the proportion of persons possessing a rare unrelated attribute is known. Numerical illustrations are also given in support of the present study. 相似文献
104.
The purpose of this paper is to examine the influence product-harm crisis situations have on, a firm's spokesperson strategies in China's emerging market economy. Through the content analysis of, 127 product-harm crises, crisis type is found to be a predictor of spokesperson strategies. Compared, with Chinese brands, foreign brands are less likely to employ top-executive spokesperson strategies, during product-harm crises. Crisis severity was found to have no impact on the adoption of, spokesperson strategies. 相似文献
105.
In one of only a few crisis communication research studies taking a relational approach, examining the effects of a company's prior reputation in publics’ responses to a given crisis situation, Lyons and Cameron (2004) found that both reputation and response profoundly affected publics’ attitude and behavioral intentions toward an organization involved in a crisis situation, using hypothetical, fictitious organizations and crises. Using actual organizations and crises, our research team designed a 2 (reputation: good vs. bad) × 2 (crisis response: apologetic vs. defensive) × 2 (CEO visibility in immediate crisis response: visible vs. invisible) within-subjects experiment (N = 102) to examine the variances in stakeholders’ attitudes and behavioral intentions toward a company after being exposed to online video that delivered a corporate crisis response. Findings were counter-intuitive: a defensive response to a crisis is as acceptable to crisis stakeholders as an apologetic response if the CEO is visible (or audible) in the response and if the pre-crisis company-stakeholder reputation is positive. Good reputation, defensive crisis response and CEO visibility in immediate response to a crisis resulted in the best stakeholder attitudes and purchase intentions. 相似文献
106.
There is little research which has explored how students on Initial Teacher Training (ITT) courses understand and conceptualise discourses of ‘race’, diversity and inclusion. This article will focus on student understandings of racialised identities; it will explore the discourses by which students understand what it means to be White and what it means to be Black, within the context of ITT. The article will examine the different facets and themes of identity within the context of belonging and exclusion which exist within higher education in the cultural and social contexts of English universities. The findings indicate that students’ understandings of ‘race’, diversity and inclusion on ITT courses are complex and multifaceted. The article argues that greater training is needed in relation to the practical assistance that student teachers require in terms of increasing their understanding of diversity and dealing with racism in the classroom. 相似文献
107.
男性犯罪青少年人际信任与社会支持、应对方式的关系研究 总被引:1,自引:0,他引:1
单婷婷 《广西青年干部学院学报》2007,17(2):11-13
通过对山东省少年管教所189名男性犯罪青少年人际信任的特点以及与其社会支持、应对方式的关系进行研究发现:(1)男性犯罪青少年人际信任水平比同龄男性中学生低,且差异显著;(2)其社会支持与人际信任水平呈正相关;(3)积极应对方式与人际信任水平呈正相关,消极应对方式与人际信任水平呈负相关;(4)人际信任、社会支持和应对方式之间存在复杂的因果关系;(5)各种客观变量对人际信任的影响甚微. 相似文献
108.
孙晓蓉 《安徽理工大学学报(社会科学版)》2007,9(1):49-54
反讽可以达到戏谑、嘲弄及讽刺的效果,使作品生动幽默,富有艺术感染力。反讽在《傲慢与偏见》中塑造了鲜活的人物形象,使作品妙趣横生,令读者百读不厌。因此,成功的译文必须将其完全再现出来。然而,在阅读三个中文译本的过程中发现存在反讽的欠额翻译现象。从语言学角度分析了其原因,并给出了新的翻译建议,指出译者不仅要具备足够的源语文化和语言知识,还必须具有熟练驾驭目标语的能力,才能避免反讽的欠额翻译,达到译语读者和源语读者反应的对等。 相似文献
109.
景美霞 《山西大同大学学报(社会科学版)》2009,23(3):101-102,112
过程写作法近年来盛行海外,已经成为西方写作教学主流。它将写作视为交互循环的心理认知过程和语言交际过程,重视写作的具体过程及其交际性,被证明对于提高学习者写作能力效果显著。本文系统地研究了过程写作法产生的背景、理论基础及其在写作教学中的实际应用。 相似文献
110.
QMRA for Drinking Water: 2. The Effect of Pathogen Clustering in Single‐Hit Dose‐Response Models
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Spatial and/or temporal clustering of pathogens will invalidate the commonly used assumption of Poisson‐distributed pathogen counts (doses) in quantitative microbial risk assessment. In this work, the theoretically predicted effect of spatial clustering in conventional “single‐hit” dose‐response models is investigated by employing the stuttering Poisson distribution, a very general family of count distributions that naturally models pathogen clustering and contains the Poisson and negative binomial distributions as special cases. The analysis is facilitated by formulating the dose‐response models in terms of probability generating functions. It is shown formally that the theoretical single‐hit risk obtained with a stuttering Poisson distribution is lower than that obtained with a Poisson distribution, assuming identical mean doses. A similar result holds for mixed Poisson distributions. Numerical examples indicate that the theoretical single‐hit risk is fairly insensitive to moderate clustering, though the effect tends to be more pronounced for low mean doses. Furthermore, using Jensen's inequality, an upper bound on risk is derived that tends to better approximate the exact theoretical single‐hit risk for highly overdispersed dose distributions. The bound holds with any dose distribution (characterized by its mean and zero inflation index) and any conditional dose‐response model that is concave in the dose variable. Its application is exemplified with published data from Norovirus feeding trials, for which some of the administered doses were prepared from an inoculum of aggregated viruses. The potential implications of clustering for dose‐response assessment as well as practical risk characterization are discussed. 相似文献