全文获取类型
收费全文 | 1084篇 |
免费 | 104篇 |
国内免费 | 8篇 |
专业分类
管理学 | 28篇 |
民族学 | 10篇 |
人口学 | 22篇 |
丛书文集 | 60篇 |
理论方法论 | 171篇 |
综合类 | 478篇 |
社会学 | 371篇 |
统计学 | 56篇 |
出版年
2024年 | 3篇 |
2023年 | 26篇 |
2022年 | 6篇 |
2021年 | 17篇 |
2020年 | 53篇 |
2019年 | 51篇 |
2018年 | 28篇 |
2017年 | 43篇 |
2016年 | 34篇 |
2015年 | 45篇 |
2014年 | 63篇 |
2013年 | 172篇 |
2012年 | 46篇 |
2011年 | 59篇 |
2010年 | 55篇 |
2009年 | 42篇 |
2008年 | 34篇 |
2007年 | 43篇 |
2006年 | 59篇 |
2005年 | 66篇 |
2004年 | 57篇 |
2003年 | 59篇 |
2002年 | 31篇 |
2001年 | 32篇 |
2000年 | 21篇 |
1999年 | 9篇 |
1998年 | 8篇 |
1997年 | 3篇 |
1996年 | 4篇 |
1995年 | 2篇 |
1994年 | 4篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1990年 | 1篇 |
1989年 | 3篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1985年 | 2篇 |
1983年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1977年 | 1篇 |
排序方式: 共有1196条查询结果,搜索用时 15 毫秒
1.
Ce Shen Jessica Johnson Zhenhe Chi John B. Williamson 《International social security review》2020,73(2):3-26
China’s pension reform during the past three decades has allowed a majority of China’s population to be covered by a pension scheme. Of particular note has been the New Rural Pension Scheme (NRPS), a voluntary programme introduced starting in 2009. One goal of our analysis is to assess that pension scheme, using a variety of sources of information including data drawn from recent (2013 and 2015) nationwide China Health and Retirement Longitudinal Surveys (CHARLS). Our analysis involves an exploration of differences between the generosity and structure of the NRPS and other pension schemes currently in place. We also explore the feasibility of reforming the current “quasi-social pension” component of the NRPS by substituting a universal non-contributory social pension pillar. In connection with our assessment of the NRPS, we note the unusually low benefit levels for rural China. 相似文献
2.
Fire and restoration of the largest urban forest of the world in Rio de Janeiro City,Brazil 总被引:1,自引:1,他引:0
National Park of Tijuca in Rio de Janeiro (Brazil) is about 3,300 ha and considered the largest urban forest in the world. Its floristic composition is typical of Atlantic Rain Forest. The reserve is being altered because of fire occurrences and urban expansion. This study identified locations and causes of forest fires, and makes management recommendations to restore damaged areas. From 1991 to 2000, forest firefighters recorded an average of 75-fire occurrences/year. Identified causes included hot air balloons (24%), intentional (24%), rubbish burning (21%) and religious practices (17%). Primary fuels included invasive grasses and ferns. Although hot air balloons destroyed larger areas of forest in each occurrence, a greater number of fires started in the invasive vegetation along roads that bisect the forest. In response to recurrent forests, invasive vegetation has spread gradually into the forest increasing forest degradation. To decrease fire damage, sites with high fire frequencies and density of invasive vegetation were planted with less flammable species. Results indicate that fire frequency decreased and density of invasive vegetation declined. This approach appears to prevent fire incidence, reduce the need for fire fighting, and preserve existing biodiversity. 相似文献
3.
Nicolas Roinsard 《Sociologie du Travail》2006,48(2):159
Against a background of mass unemployment and the increasing precariousness of employment, the current changes in the labour market demand that we examine the previously central role of paid employment in social integration. If the individual now deprived of employment or having a temporary contract is by dint of this fact less included in society or is less secure by not having a permanent salary, is it to say that he embodies the face of the de-affiliated, of those who miss out on social benefits? Taking the example of the Reunion Island which has the highest level of unemployment and population covered by the minimum income (RMI: Revenu Minimum d'Insertion) in the country, this article endeavours to explain and understand how, in the context of a protective society and increasingly flexible employment market, new methods of social integration without and resulting from paid employment are being formed. 相似文献
4.
Bruno Lémery 《Sociologie du Travail》2003,45(1):9-25
The model of development that has governed the modernization of farming in France is increasingly coming under attack. Given this, analysing the “work” that farming performs to “translate” the criticisms with which it must cope in formulating new definitions of roles is important in order to understand changes under way in this sector. The changes undergone by farming over the past eighty years are briefly presented and then the procedures and results of a survey, conducted during the mad cow disease among beef-farmers in Burgundy, are described. Light is thus shed on the diversity of the positions that farmers have adopted with regard to the future of their occupation. An interpretation is proposed of how the distribution (and interplay between) these positions might affect agriculture. - Special issue on Agriculture and food. 相似文献
5.
分析了全球定位系统接收机可获取的观测量。给出了载波相位平滑伪码伪距的一个递归算法结构。讨论了平滑算法初值的设定和构造伪距前向预测值,并对各种情况进行了统计分析。文中还给出了平滑算法的性能评估,结论表明载波相位平滑技术可大大改善伪距观测精度。改善程度与该算法中的权重因子和递归时间密切相关 相似文献
6.
克隆技术对人类社会的影响 总被引:1,自引:0,他引:1
本文分析了克隆技术对社会发展的积极作用和消极影响 ,分析了“Clone”技术的必然发展趋势 ,预言了“Clone”技术对人类社会的深层影响及对策 ,提示人类应用该项技术时要趋利避害 相似文献
7.
唐余俊 《盐城工学院学报(社会科学版)》2002,15(2):54-58
网络文学已登上二十一世纪中国文学的大雅之堂。从最能体现网络文学基本特征的网络小说进行探析 ,认为网络文学的基本特征为 :情感表达的宣泄性 ;著读交流的迅捷性 ;叙事结构的随意性 ;语言表达的能动性等。 相似文献
8.
聂志平 《浙江师范大学学报(社会科学版)》2002,27(5):85-88
我们认为 ,“得”字句的语义、结构中心在“得”后成分上 ,所以“把墙刷得白”不能说 ,是因为“把”字句表示一种处置 ,其后的谓语必然蕴含着实现这一时体意义 ,而作为有“把”的“得”字句中心的“白”是单个性质形容词 ,本身不包含实现这一时体特征 ;我们对范晓先生《复动“V得”句》一文中的用三个平面观点解释一种“得”字句提出一点疑问 ;对张豫峰以博士论文为基础发表的两篇论文中的观点和学风问题进行了批评。 相似文献
9.
基于主动网的SYN攻击防御 总被引:1,自引:0,他引:1
针对目前传统网防御TCP同步泛滥攻击的服务器主机、路由器过滤、防火墙方法的局限性,利用主动网的动态特性,提出一种基于主动网的同步泛滥防御机制,并通过仿真实验将它与传统网环境下的防火墙防御进行了性能比较和分析,结果表明主动网技术为同步泛滥攻击提供了良好的防御性能。 相似文献
10.
许俊达 《深圳大学学报(人文社会科学版)》1994,(4)
亨利·德曼的“新社会主义哲学”建立在对马克思主义的批判基础上,并与资产阶级哲学实行联姻,德曼在马克思《1844年经济学哲学手搞》中的“新发现”表明的不过是对马克思主义的严重曲解,这一哲学不仅在理论上没有给社会主义运动贡献新东西,而且在实践上蜕变成了与法西斯合流的反动力量. 相似文献