全文获取类型
收费全文 | 13563篇 |
免费 | 839篇 |
国内免费 | 129篇 |
专业分类
管理学 | 570篇 |
劳动科学 | 5篇 |
民族学 | 213篇 |
人才学 | 2篇 |
人口学 | 602篇 |
丛书文集 | 1169篇 |
理论方法论 | 879篇 |
综合类 | 8931篇 |
社会学 | 1787篇 |
统计学 | 373篇 |
出版年
2024年 | 100篇 |
2023年 | 209篇 |
2022年 | 217篇 |
2021年 | 254篇 |
2020年 | 369篇 |
2019年 | 349篇 |
2018年 | 354篇 |
2017年 | 386篇 |
2016年 | 377篇 |
2015年 | 400篇 |
2014年 | 806篇 |
2013年 | 1294篇 |
2012年 | 942篇 |
2011年 | 1123篇 |
2010年 | 974篇 |
2009年 | 906篇 |
2008年 | 770篇 |
2007年 | 904篇 |
2006年 | 833篇 |
2005年 | 671篇 |
2004年 | 536篇 |
2003年 | 414篇 |
2002年 | 378篇 |
2001年 | 265篇 |
2000年 | 156篇 |
1999年 | 95篇 |
1998年 | 67篇 |
1997年 | 52篇 |
1996年 | 36篇 |
1995年 | 53篇 |
1994年 | 32篇 |
1993年 | 27篇 |
1992年 | 31篇 |
1991年 | 29篇 |
1990年 | 11篇 |
1989年 | 21篇 |
1988年 | 21篇 |
1987年 | 11篇 |
1986年 | 8篇 |
1985年 | 12篇 |
1984年 | 8篇 |
1983年 | 11篇 |
1982年 | 9篇 |
1981年 | 4篇 |
1980年 | 3篇 |
1979年 | 2篇 |
1978年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
农民工流动的成本收益分析 总被引:1,自引:0,他引:1
在对农民工在农村和城市的生产生活成本和收益进行分析的基础上,构建了农民工流动的成本收益模型。分析了工资收入水平、流出地区农民收益差异、非经济成本、社会收益等影响农民工流动迁移决策的因素,及各因素之间的关系,探讨了农民工流动的机理。 相似文献
52.
loveLife is the largest effort ever launched in South Africa to change adolescent sexual behaviour with the aim of reducing the rate of HIV infection among 15–20 year olds by 50%, reducing other STIs, and reducing the incidence of teenage pregnancy. loveLife combines high-powered media awareness and education, development of adolescent-friendly reproductive health services, and outreach and support programmes. The 5-year research and evaluation plan includes a multi-year comprehensive observational study, tracking change in a range of behavioural indicators and in sexual health outcomes. In its first 2 years, loveLife reached more than 4 million youth. Sixty-two percent of youth and 59% of their parents/guardians recognize the brand, while the vast majority of parents (97%) and youth (89%) exposed to loveLife, identified loveLife as being positive. Challenges in the next years are the continued roll out of the programme, and the development of institutional support and behaviour change. 相似文献
53.
54.
AIDS education started very early in Zimbabwe and is now compulsory in all schools. This evaluation documents the development of the primary and secondary school AIDS Action Programme from 1991 to 1998. Six programme aspects were evaluated: programme start-up, planning and management, development of syllabi and materials, teacher training, research, monitoring and evaluation, and co-ordination. The Programme drew on resources from within the existing educational system. Due to broad-based consultation and participation, it was supported by Government and partners. Flexible management ensured implementation of mid-course corrections. It was concluded that school AIDS programmes should stress participatory teaching and learning methods and life-skills training. Curriculum writers and teachers needed training and supervision in participatory techniques. Cluster workshops between district and school levels were needed to strengthen the cascade model of teacher training that had been adopted. Systematic research, monitoring and evaluation were essential, including follow-ups to baseline surveys. The Zimbabwean programme was well-designed, relatively inexpensive and replicable. 相似文献
55.
William S. Pease 《Risk analysis》1992,12(2):253-265
The extent of carcinogen regulation under existing U.S. environmental statutes is assessed by developing measures of the scope and stringency of regulation. While concern about cancer risk has played an important political role in obtaining support for pollution control programs, it has not provided the predominant rationale for most regulatory actions taken to date. Less than 20% of all standards established to limit concentrations of chemicals in various media address carcinogens. Restrictions on chemical use are more frequently based on concerns about noncancer human health or ecological effects. Of the chemicals in commercial use which have been identified as potential human carcinogens on the basis of rodent bioassays, only a small proportion are regulated. There is an inverse relationship between the scope of regulatory coverage and the stringency of regulatory requirements: the largest percentages of identified carcinogens are affected by the least stringent requirements, such as information disclosure. Standards based on de minimis cancer risk levels have been established for only 10% of identified carcinogens and are restricted to one medium: water. Complete bans on use have affected very few chemicals. The general role that carcinogenicity now plays in the regulatory process is not dramatically different from that of other adverse human health effects: if a substance is identified as a hazard, it may eventually be subject to economically achievable and technically feasible restrictions. 相似文献
56.
This 1998 evaluation assessed the peer education programmes of HIV/AIDS projects run by four non-governmental organisations. A mini-case study approach was used and analysis was based on cross-case itemistic variables. The projects were assessed only in terms of immediate developmental outcomes to target groups rather than on long-term impact. The study concluded the following: (1) The projects had raised community awareness of HIV/AIDS; (2) Basic knowledge of HIV/AIDS was for the most part accurate; (3) There was anecdotal evidence of behavioural changes in terms of partner-reduction as reported by the projects, though the evidence was sometimes conflicting; and (4) There was evidence that certain traditional practices, which contributed to the spread of the virus (e.g. sexual cleansing and scarification), were becoming modified over time. The programmes were also instrumental in protecting human rights and enabling people living with HIV/AIDS to maintain human dignity. 相似文献
57.
范定洪 《重庆大学学报(社会科学版)》2002,8(6):169-171
深入分析历年硕士研究生入学英语考试英译汉试题的特点,总结四方面特点,提出具有针对性的翻译方法和技巧作为对策:(1)试题中的词汇难以见词明义,需根据上下文选择确定词义或对词义进行引申;(2)句子的理解与翻译对上下文的依赖性很强,需使用还原法对原文中的替代、省略、变换等表达进行还原翻译;(3)句子较长,结构复杂,需采用分译法;(4)很多句子的表意方式和语序体现出英美人的思维习惯和特点,需作语序调整。 相似文献
58.
任宝玉 《山东科技大学学报(社会科学版)》2002,4(2):57-62,67
对于财政收入主要来源于农业经济的农村地区 ,乡镇财政的压力既推动了乡镇政权组织发展本地经济 ,同时也导致了乡镇政权组织加大财政提取力度 ,甚至为此不惜违反国家有关法律和政策 ,从而削弱了基层政权的合法性基础 ,加剧了农村社会矛盾。要改善农业地区的乡镇治理状况 ,必须结合农业主导型乡镇财政的特点改革农村管理体制。 相似文献
59.
吴业苗 《齐齐哈尔大学学报(哲学社会科学版)》2002,(5):32-34
工业化包括农村工业化,片面的工业化和单向的农村———城市人口流动模式都不能解决农村剩余劳动力就业问题。为充分就业找到新途径,关键在于对传统农业的改造和加速农村工业化发展。 相似文献
60.
本文从经济社会两方面设计科学合理的指标体系 ,对山东农村经济与社会内部诸要素发展的状况及经济社会发展的协调性进行评价 ,从中揭示山东省农村经济与社会发展中存在的不协调因素 ,进而提出推进山东农村经济与社会的协调发展的对策 相似文献