首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   734篇
  免费   23篇
  国内免费   10篇
管理学   65篇
民族学   14篇
人口学   50篇
丛书文集   53篇
理论方法论   78篇
综合类   177篇
社会学   304篇
统计学   26篇
  2024年   1篇
  2023年   3篇
  2022年   10篇
  2021年   7篇
  2020年   11篇
  2019年   10篇
  2018年   17篇
  2017年   37篇
  2016年   26篇
  2015年   25篇
  2014年   28篇
  2013年   101篇
  2012年   41篇
  2011年   51篇
  2010年   48篇
  2009年   30篇
  2008年   39篇
  2007年   42篇
  2006年   24篇
  2005年   30篇
  2004年   18篇
  2003年   13篇
  2002年   22篇
  2001年   20篇
  2000年   12篇
  1999年   9篇
  1998年   13篇
  1997年   10篇
  1996年   6篇
  1995年   2篇
  1994年   8篇
  1993年   4篇
  1992年   5篇
  1991年   6篇
  1990年   1篇
  1988年   6篇
  1987年   5篇
  1986年   5篇
  1985年   6篇
  1984年   5篇
  1983年   5篇
  1980年   1篇
  1979年   1篇
  1978年   1篇
  1977年   1篇
  1971年   1篇
排序方式: 共有767条查询结果,搜索用时 31 毫秒
1.
Fire hazard is a mounting concern in tropical rainforests of the Brazilian Amazon and has raised awareness within the science community of the links between agricultural fire use, drought and accidental fire. As a result, fire is being addressed as a crisis event with mitigation focused on those who light fires, particularly smallholder agriculturalists. Little attention is paid to the historical and ongoing ways in which Amazon landscapes and peoples have been made more susceptible to fire. Frontier regions of the Brazilian Amazon serve a variety of functions within the larger Brazilian society, including as extractive reserves for economic development, as social safety valves to reduce population pressures, and as areas to support urban regional integration. Each of these functions has impacted frontier environments in ways that create more flammable landscapes and/or shape the vulnerability of people to fire hazard. This paper uses a case study inthe Brazilian Lower Amazon to understand how vulnerability to fire hazard develops. It argues that if fire mitigation remains centered on fire as a crisis event, an understanding of what constitutes frontier spaces of vulnerability, both in landscape and in populations, will be limited.  相似文献   
2.
解体之后的哲学在俄罗斯遭到了前所未有的冷落,它既面临着俄罗斯是否还需要哲学的问题,又面临着被终结的可能,但是俄罗斯哲学以自己一贯的优秀品质在低靡的社会现实中艰难地跋涉,关注着一些积极而有意义的同社会生活密切相关的问题。暂时摆脱意识形态束缚的俄罗斯哲学,更加清醒理智地期待哲学的美好未来。  相似文献   
3.
《辛丑条约》签订后,清政府开始在政治上进行变革,推行“新政”和预备立宪。在此过程中,自晚清以降出现的中央和地方的矛盾以及固有的满汉矛盾不断加剧甚至激化,在辛亥革命前夕严重动摇了清王朝的统治。  相似文献   
4.
The evolving democracies of Eastern Europe and the former USSR republics are keenly interested in establishing charities. They have little law on this issue because their former governments did not encourage the development of charities. This article compares US and English regulation of charities and proposes a regulatory framework based on what the authors believe are the best attributes of both. Although the framework is based on the common law system, it can be adapted to the civil law systems of the Eastern European nations and the former USSR republics. The article includes such issues as developing a body of law, tax relief and creating a regulatory agency.Mr Hopkins is a lawyer with Powers, Pyles & Sutter, 1275 Pennsylvania Ave., N.W., Washington, D.C. 20007, and author ofThe Law of Tax-Exempt Organizations (1992a).Ms Moore is also a lawyer, 5908 N. 35th St., Arlington, Virginia 22207.The authors would like to thank Mssrs Kersi Shroff and Stephen F. Clarke, Senior Legal Specialists, American-British Law Division, Library of Congress, and Mr. William H. Morris, an attorney at Steptoe & Johnson, Washington, D.C., for their kind assistance during the researching of this article.  相似文献   
5.
英国保释有较为完善的制度和良好的应用效果。通过对英国保释制度的了解和借鉴,并结合当前我国取保候审制度存在的问题,应从转变思想,革新诉讼理念;改革完善取保候审制度;建立司法审查和救济机制;建立有效的取保候审人的管理监督制度和加大对脱保人员的惩处力度等方面进行改革,让取保候审发挥出更为积极的作用。  相似文献   
6.
In this paper, we present a Bayesian methodology for modelling accelerated lifetime tests under a stress response relationship with a threshold stress. Both Laplace and MCMC methods are considered. The methodology is described in detail for the case when an exponential distribution is assumed to express the behaviour of lifetimes, and a power law model with a threshold stress is assumed as the stress response relationship. We assume vague but proper priors for the parameters of interest. The methodology is illustrated by a accelerated failure test on an electrical insulation film.  相似文献   
7.
This paper offers a general overview of past, current, and developing issues and debates in the growing field of gender and feminist media studies. Its main aim is to provide for those who are new to the field, as well as advanced students and researchers, a broad sense of what is now significant and important area of academic research. It engages with the differences and similarities between gender and feminist media studies, gendered communication systems, gendered news production, feminist methodologies and methods in communication research (textual, audience, and production based), the media's role in constructing gender, and gendered and feminist research by specific media form including advertising, magazines, film, television, news, radio, and the Internet and new media. The outline of research presented is not exhaustive; however, it attempts to trace certain significant developments in the field historically, conceptually, methodologically politically and trans‐nationally.  相似文献   
8.
In this article, we describe a straightforward method for solving the probability of at least one malignant cell by time t, and the associated hazard function, in the general (i.e., nonhomogeneous) two-stage Moolgavkar-Venzon-Knudson (MVK) model of cancer. The method consists of solving four coupled ordinary differential equations derived from the Kolmogorov backward equations for this process. The relationship of this method to previously proposed solutions is discussed.  相似文献   
9.
什么是历史人口学--与葛剑雄教授商榷   总被引:1,自引:0,他引:1  
焦培民  李莎 《人口研究》2005,29(6):71-75
中国人口史的研究近年来得到了迅速的发展,人口史方面的著作已有数十部问世,发表的论文也有数百篇之多,但是人口史理论方面仍显薄弱,甚至连这门学科的名称都没有统一的认识。应该肯定的是葛剑雄先生在《中国人口史·导论》中对人口史理论做了较长篇幅的总结,这对中国人口史的研究无疑具有重要参考作用,但是笔者有些地方并不赞同《导论》的观点,在学科定义方面分歧尤大,特此提出商榷,并将学者们这方面的观点作些简单的整理和分析,从研究对象、学科名称等方面提出个人的一点看法,望同仁指正。1人口史是人口记述吗?葛剑雄给“人口史”下定义说:…  相似文献   
10.
2018年4—5月在四川省南充市城区采用便利抽样,以已婚且未育或已育一个小孩的育龄妇女为研究对象,采用自制匿名问卷,以面对面的形式收集资料,了解实施全面二孩政策后南充市育龄妇女的生育意愿,为南充市的人口研究提供参考依据。在213名调查对象中,56人(26.3%)有二孩生育意愿,140人(65.7%)无二孩生育意愿,17人(8.0%)不确定是否生育二孩。南充市被调查者的理想子女个数均值为1.46,意愿子女个数均值为1.27。不同文化程度(χ2=7.512)、配偶月收入(χ2=12.641)、理想子女数(χ2=66.401)、一孩性别(χ2=5.441)的育龄妇女间二孩生育意愿差异有统计学意义(P<0.05)。Logistic回归分析显示,第一个孩子性别为女孩(OR=2.641,P=0.021)、丈夫月收入越高(OR=1.761,P=0.028)、理想子女数多于1个(OR=29.040,P<0.001)的育龄妇女更有意愿生育二孩。南充市城区二孩生育意愿处于较低水平,经济收入、理想子女数、一孩性别会影响育龄妇女的二孩生育意愿。全面二孩政策对于促进育龄妇女生育二孩的效应有限,应当建立相关的配套政策,以促进全面二孩政策的实施。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号