全文获取类型
收费全文 | 2233篇 |
免费 | 572篇 |
国内免费 | 67篇 |
专业分类
2872篇 |
出版年
2025年 | 16篇 |
2024年 | 65篇 |
2023年 | 95篇 |
2022年 | 93篇 |
2021年 | 49篇 |
2020年 | 153篇 |
2019年 | 67篇 |
2018年 | 73篇 |
2017年 | 76篇 |
2016年 | 78篇 |
2015年 | 49篇 |
2014年 | 182篇 |
2013年 | 289篇 |
2012年 | 41篇 |
2011年 | 68篇 |
2010年 | 88篇 |
2009年 | 60篇 |
2008年 | 148篇 |
2007年 | 172篇 |
2006年 | 183篇 |
2005年 | 182篇 |
2004年 | 110篇 |
2003年 | 67篇 |
2002年 | 75篇 |
2001年 | 64篇 |
2000年 | 57篇 |
1999年 | 42篇 |
1998年 | 32篇 |
1997年 | 40篇 |
1996年 | 27篇 |
1995年 | 22篇 |
1994年 | 16篇 |
1993年 | 6篇 |
1992年 | 10篇 |
1991年 | 8篇 |
1990年 | 11篇 |
1989年 | 10篇 |
1988年 | 6篇 |
1987年 | 5篇 |
1986年 | 4篇 |
1985年 | 7篇 |
1984年 | 5篇 |
1983年 | 2篇 |
1981年 | 2篇 |
1980年 | 2篇 |
1979年 | 1篇 |
1978年 | 4篇 |
1977年 | 4篇 |
1976年 | 3篇 |
1975年 | 3篇 |
排序方式: 共有2872条查询结果,搜索用时 15 毫秒
981.
A maximum likelihood procedure for combining standardized mean differences based on a noncentratt-distribution is proposed. With a proper data augmentation technique, an EM-algorithm is developed. Information and likelihood ratio statistics are discussed in detail for reliable inference. Simulation results favor the proposed procedure over both the existing normal theory maximum likelihood procedure and the commonly used generalized least squares procedure. 相似文献
982.
从搭建大消化系平台谈医学整合思想 总被引:2,自引:2,他引:0
消化病系是医学整合思想指导下的一个范例,沈阳军区总医院内窥镜科和肝胆外科、普通外科、麻醉科、中医科等共同协作,打造了消化病系这一平台,在临床工作中创造了很多成绩,作用突出,意义重大,值得推广。 相似文献
983.
Four experiments were conducted to show that deaf adolescents tended to process information in different ways from hearing adolescents. Memorizing items sequentially shown on computer screens under the control of their articulators' movements, deaf adolescents tended to treat items that cohered as taxonomic, thematic, or slot-filler categories as isolated pieces of information. Having to perceive information by means of sign language, however, their achievements were not worse than those of hearing adolescents anymore, no matter whether the stimuli were presented as words or pictures. They could not only utilize categories relations to help memorize categories exemplars but were relatively better aware of slot-filler or thematic than taxonomic relations as well, suggesting that they had a relatively delayed development of taxonomic category representations in comparison with hearing adolescents. 相似文献
984.
Gretchen Miller Wrobel 《Dialog》2012,51(4):313-322
Abstract : Adoptive families can take many forms, yet there are similarities across adoptive family types that can be studied. Relevant research regarding the adoptive kinship network, openness and contact in adoption, family communication about adoption, adoption‐related curiosity and information‐seeking, and adoptive identity is reviewed. Christian hospitality is provided as a context within which adoptive families are formed and understood. 相似文献
985.
制约我国医学人文学科发展原因的探究 总被引:7,自引:4,他引:7
张大庆 《医学与哲学(人文社会医学版)》2001,22(8):10-13
医学人文学科(medical humanities)是医学中的重要作用已爱到越来越多的关注。但令人遗憾的是,我国医学人文学科的水平离它应当承担的责任还相距甚远,医学人文学科的发展依据是困难重重。今从学术共同体、学科建设和学术规范等方面对我国医学人文学科目前面临的困境进行剖析,并试图为如何走出困境提供几点思路。 相似文献
986.
汪雷 《医学与哲学(人文社会医学版)》2006,27(8):10-13
从范式角度重点分析了我国肇始于20世纪80年代末的市场化合作医疗改革归于失败的深层次原因,并在此基础上研究了创建新型农村合作医疗制度的原因、意义与特点,提出了符合社会主义新农村建设要求的农村合作医疗范式重构的若干对策建议。 相似文献
987.
吴传俭 《医学与哲学(人文社会医学版)》2006,27(12):66-68
社会医疗保险中药品支出比例过高的现象成为目前焦点性问题,如何通过减少药品支出比例在社会医疗保险基金支出中的比例从而有效控制保险基金的合理支出,提高参保人员的医疗保障水平。提出了通过成立社会医疗保险物流式定点药店的解决途径,并就其对社会医疗保险的正面与负面影响进行了可行性分析讨论。 相似文献
988.
将医学人文课程的教学目标落到实处 总被引:1,自引:1,他引:1
祝世娜 《医学与哲学(人文社会医学版)》2006,27(12):74-75
教学目标是教学的统帅和灵魂,具有导向、评价、调节、激励等多方面的功能。医学人文素质教育之所以处地乏力状态,很大程度上是没有将医学人文课程的教学目标落到实处。为改变医学人文课程教学乏力的状态,提高教学效果,有必要加强教学目标、教学内容、教学策略、教学资源、教学评价几方面的工作,将医学人文课程的教学目标落到实处。 相似文献
989.
采用动窗技术对文本阅读中信息精确化推理进行了初步研究。实验1研究在工作记忆范围内,信息精确化推理是即时发生的还是当局部信息不连贯时再重新追溯才发生。实验2探究信息精确化推理在长时记忆中是否也会发生。结果表明,文本阅读中的信息精确化推理,不管需要进行精确化推理的句子与包含推理所需信息的句子是处于同一工作记忆范围内,还是处于长时记忆中,推理都是即时发生的。 相似文献
990.
Turner E 《Science and engineering ethics》2001,7(2):247-260
This paper investigates the relationship between the role that information technology (IT) has played in the development of
women’s employment, the possibility of women having a significant influence on the technology’s development, and the way that
the IT industry perceives women as computer scientists, users and consumers. The industry’s perception of women and men is
investigated through the portrayal of them in computing advertisements. While women are increasingly updating their technological
skills and know-how, and through this process are entering some positions in the workplace traditionally occupied by men,
these achievements are not mirrored in their social and occupational status. The computer industry and higher education have
worryingly low numbers of women, while the possibility of women influencing the development of computer technology is just
emerging in feminist research. This paper argues that, though the IT industry, through their self-regulatory codes, subscribes
to equal treatment of sexes, races and persons with disabilities, the industry nevertheless paints a stereotyped picture of
inequality when portraying men and women in computer advertisements. As long as such a perception of women prevails within
the industry, it will stand as a barrier to women having equal access to computer technology. If advertisements influence
the way society perceives major social constructs and issues, then the computing industry has a social responsibility to portray
men and women in an equal and non-stereotypical fashion.
An earlier version of this paper was presented at the ETHICOMP98 Conference, Rotterdam, Holland, March 1998. 相似文献