全文获取类型
收费全文 | 332篇 |
免费 | 13篇 |
国内免费 | 4篇 |
专业分类
管理学 | 13篇 |
民族学 | 5篇 |
人口学 | 7篇 |
丛书文集 | 36篇 |
理论方法论 | 11篇 |
综合类 | 237篇 |
社会学 | 27篇 |
统计学 | 13篇 |
出版年
2023年 | 2篇 |
2022年 | 2篇 |
2021年 | 3篇 |
2020年 | 2篇 |
2019年 | 4篇 |
2018年 | 3篇 |
2017年 | 3篇 |
2016年 | 6篇 |
2015年 | 4篇 |
2014年 | 14篇 |
2013年 | 32篇 |
2012年 | 20篇 |
2011年 | 27篇 |
2010年 | 19篇 |
2009年 | 18篇 |
2008年 | 17篇 |
2007年 | 28篇 |
2006年 | 18篇 |
2005年 | 32篇 |
2004年 | 20篇 |
2003年 | 18篇 |
2002年 | 19篇 |
2001年 | 11篇 |
2000年 | 9篇 |
1999年 | 2篇 |
1998年 | 4篇 |
1997年 | 2篇 |
1996年 | 3篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1992年 | 1篇 |
1990年 | 1篇 |
1988年 | 1篇 |
1984年 | 1篇 |
排序方式: 共有349条查询结果,搜索用时 15 毫秒
1.
针对灾害事件发生的不确定性以及灾害发生后应急物资需求量的爆发式增长,本文设计了一个政府主导的基于数量柔性契约的双源应急物资采购模型。在存在一个现货市场的情况下,政府除了常规采购外,还会与供应方签订一份数量柔性契约,用以建立政企联合储备应急物资的合作关系。通过数理推导,本文发现灾害事件发生概率,政府自身储备量,现货市场采购价格会对双方决策产生重要影响,并给出三个影响因素在满足不同条件时政企双方的最优决策,同时进一步分析了这三个因素对政府采购成本与供应方利润的影响。最后,通过数值模拟的方式对所得结论进行了验证。本文的研究为政府与企业构建联合储备应急物资的合作关系提供了指导与依据。 相似文献
2.
Page D. Dobbs Ashley H. Clawson Mary Gowin Marshall K. Cheney 《Journal of American college health : J of ACH》2020,68(4):347-356
AbstractObjective: This convergent mixed methods study examined how information sources influence college students’ beliefs and knowledge about vaping. Participants: College students either completed a survey (n?=?522; January–April, 2016) or were interviewed (n?=?33; 2015–2016). Methods: College students completed an online survey asking ‘where’ students had heard about e-cigarette and ‘what’ they had heard. Responses were quantified and a chi-square analysis was conducted. Additional college student e-cigarette users were interviewed about the credibility of information sources. Thematic analysis was conducted with the coded interviews. Results: There was a significant relationship between information sources for e-cigarettes (social sources, media, advertising, education/research) and the messages they recalled. Friends who vaped and e-cigarette users were the most credible information sources. Confirmation bias and scientific impotence bias characterized assessment of e-cigarette information. Conclusions: Health education specialists working on college campuses should provide accurate information via communication channels most unitized by college students. 相似文献
3.
4.
刘艳娟 《重庆文理学院学报》2016,35(1):60-62
对贞卜辞是甲骨文中有特色的文例形式,我们从对贞卜辞的判定、同字异形现象的判定以及两条卜辞刻写先后顺序的判定三个方面来细致研究对贞卜辞,进而为下一步的研究打下基础。 相似文献
5.
Young people represent the future, but little is known about their attitudes towards climate change, one of the most serious issues facing the world today. The purpose of the present study is to contribute with improved and new knowledge of young Norwegians’ understanding of and attitudes towards this issue, with a special focus on perspectives of the future. Of particular interest is the influence of divergent framings of the climate question in Norway, due to conflicting interests between the petroleum industry and climate concern. The young people's voices are elicited through two different surveys undertaken during the fall of 2013, one national (Norwegian Citizen Panel) and one local (School survey conducted among high-school students). The study generated both quantitative and qualitative findings, stemming from closed-ended as well as open-ended questions. The data were handled through a mixed methods approach, combining quantitative and qualitative analyses. The results show that the voices tend to be oriented towards the opinion that Norway has a responsibility to help poor countries as well as a duty to prevent climate change and that the country should reduce its oil production. We further observe that young Norwegians have an optimistic view of the future, based on a pronounced belief in technology and science. 相似文献
6.
以信息、语言、记忆工业和时间物体为代表的后现代技术,批判现代技术的机械化、商品化、功利化、权力化人类中心主义以及物化和异化带来的各类难以预测的事故和灾难。主张在非祛魅性、多元性、生态性和非决定论的后现代科学基础上,根除"技术官僚主义",推动后现代技术往更加人道、民主、自由、智慧和艺术的方向发展,将技术进一步人性化和真善美一体化,使其真正为新人民和全人类的文明服务。 相似文献
7.
王丽丽 《山西大学学报(哲学社会科学版)》2012,35(1):111-117
时效制度是传统国际法取得国家领土的方式之一,深入分析其法律渊源对于从根本上理解这一制度具有重要的理论及实践意义。文章认为,国际法时效制度的法律渊源包括资源性要素、动因性要素及进路性要素三方面:罗马法取得时效制度及13世纪至20世纪西方国际法学者的有关学说为其资源性要素,中世纪中后期及近代西方及世界国际社会的政治、经济、宗教、法律及文化的交织体为其动因性要素,国际司法途径为其进路性要素。其中,动因性要素是其根本要素,资源性要素是其内容组成的主要要素,而进路性要素则将前两个要素与国际法时效制度联系起来。 相似文献
8.
三叠统嘉陵江组碳酸盐岩是四川盆地内重要的产层之一。对嘉陵江组天然气组成和碳同位素特征的分析表明:嘉陵江组的天然气干燥系数大,热演化程度高,油型气和煤型气混源特征明显,但川中地区除外,主要为高熟油型气。经盆地区域构造活动和成藏要素分析,恢复了嘉陵江组天然气成藏过程,建立了川中、川东和川南地区典型构造带嘉陵江组天然气的成藏模式,发现嘉陵江组气藏均经历了古油藏—古气藏—现今气藏的漫长演化过程,与印支运动、燕山运动和喜马拉雅运动密切相关。四川盆地嘉陵江组天然气成藏遵循:高压驱动,流体跨层流动,断层裂缝疏导,膏盖油裂解气成藏的规律。 相似文献
9.
景天魁 《北京工业大学学报(社会科学版)》2014,14(3):1-6,20
改革开放以来,我国在社会治理方面取得了很大成绩,也积累了许多宝贵经验。实践及研究表明,源头治理是社会治理有效性的基础和前提,是一种有效的社会治理方式。源头治理可以缓解社会紧张度,克服社会离散度,增强社会认同度,重建社会信任度。福利建设是缓解社会紧张度的上策,发展福利服务有利于增强社会团结度,加强福利治理有利于增强社会认同度和信任度。 相似文献
10.
Manjeet Baruah 《Asian Ethnicity》2017,18(4):452-469
Edward Gait’s A History of Assam was first published in 1906, later revised in 1926. The book has remained one of the most popular ‘textbooks’ in Assam, especially as the first modern historiography on the subject. This article looks at two broad issues in this regard. First, it looks at the contradictions that Gait was faced with in terms of his imperial ideology and interpreting the historical sources of an imperial frontier. Second, it tries to situate the relevance of the above point vis-à-vis some of the contemporary attempts at re-framing the region as an international borderland. In conclusion, the article looks at the reception of Gait and his appropriation into different discourses within Assam. A point explored is whether despite its contradictions, was Gait’s A History of Assam part of a wider, dynamic context of early twentieth century Assam, which made the book an important academic and political intervention of its times. 相似文献