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   8049篇
  免费   935篇
  国内免费   25篇
耳鼻咽喉   34篇
儿科学   170篇
妇产科学   75篇
基础医学   800篇
口腔科学   297篇
临床医学   1546篇
内科学   459篇
皮肤病学   30篇
神经病学   421篇
特种医学   83篇
外科学   316篇
综合类   1879篇
预防医学   1939篇
眼科学   23篇
药学   444篇
  6篇
中国医学   119篇
肿瘤学   368篇
  2024年   13篇
  2023年   157篇
  2022年   274篇
  2021年   361篇
  2020年   392篇
  2019年   371篇
  2018年   351篇
  2017年   327篇
  2016年   346篇
  2015年   356篇
  2014年   711篇
  2013年   692篇
  2012年   598篇
  2011年   551篇
  2010年   451篇
  2009年   413篇
  2008年   382篇
  2007年   366篇
  2006年   285篇
  2005年   248篇
  2004年   220篇
  2003年   182篇
  2002年   139篇
  2001年   116篇
  2000年   99篇
  1999年   84篇
  1998年   64篇
  1997年   54篇
  1996年   44篇
  1995年   37篇
  1994年   31篇
  1993年   32篇
  1992年   18篇
  1991年   26篇
  1990年   18篇
  1989年   26篇
  1988年   21篇
  1987年   10篇
  1986年   12篇
  1985年   12篇
  1984年   18篇
  1983年   8篇
  1982年   12篇
  1981年   7篇
  1980年   18篇
  1979年   8篇
  1978年   10篇
  1977年   6篇
  1974年   7篇
  1973年   7篇
排序方式: 共有9009条查询结果,搜索用时 15 毫秒
1.
BackgroundUnequal housing access resulted in more than 150 million homeless people worldwide, with millions more expected to be added every year due to the ongoing climate-related crises. Homeless population has a counterproductive effect on the social, psychological integration efforts by the community and exposure to other severe health-related issues. Geographic Information Systems (GIS) have long been applied in urban planning and policy, housing and homelessness, and health-related research.MethodsWe used the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method to systematically review 24 articles collected from multiple databases (n = 10) that focused on health-related issues among homeless people and used geospatial analysis techniques in their research.ResultsOur findings indicated a geographic clustering of case study locations– 26 out of the 31 case study sites are from the USA and Canada. Studies used spatial analysis techniques to identify hotspots, clusters and patterns of patient location and population distribution. Studies also reported relationships among the location of homeless shelters and substance use, discarded needles, different infectious and non-infectious disease clusters.ConclusionMost studies were restricted in analyzing and visualizing the patterns and disease clusters; however, geospatial analyses techniques are useful and offer diverse techniques for a more sophisticated understanding of the spatial characteristics of the health issues among homeless people. Better integration of GIS in health research among the homeless would help formulate sensible policies to counter health inequities among this vulnerable population group.  相似文献   
2.
Background: Most theoretical models of self-determination suggest that both environmental and personal factors influence the development of self-determination. The design and implementation of interventions must be conducted with foreknowledge of such mediating and moderating factors if the intervention is to be successful.

Methods: The purpose of this study was to examine the degree to which several personal factors and school characteristics affect and explain students’ self-determination. A total of 232 students with intellectual disability from Spain participated. Their self-determination level was assessed by the ARC-INICO Scale.

Results: Students with moderate levels of intellectual disability obtained significantly lower scores on self-determination than their peers with mild intellectual disability. There were significant differences in relation to the level of support needs and their experience with transition programs. The level of support needs was a significant predictor.

Conclusion: These findings contribute to current research in this field and practical implications were discussed.  相似文献   

3.
4.
5.
Zusammenfassung Bei 205 Melanompatienten im Stadium I und II wurden das Ausma? der psychosozialen Belastung und der sozialen Unterstützung sowie die Einstellung der Patienten zu unterstützenden Gespr?chsangeboten erhoben. 59% der Patienten fanden zus?tzliche unterstützende Gespr?che mit dem behandelnden Dermatologen, 20% mit einem Psychotherapeuten sinnvoll. Patienten, die starke Angst vor einem Fortschreiten des Tumors ?u?erten und die sich über die Erkrankung nicht ausreichend aufgekl?rt fühlten, wünschten Gespr?che mit dem behandelnden Arzt. Patienten, die sich psychosozial st?rker belastet fühlten und sozial weniger Unterstützung durch ihr soziales Umfeld angaben, befürworteten Unterstützung durch einen Psychotherapeuten. Auch eine ungünstige Prognose scheint das Interesse an psychotherapeutischer Unterstützung zu verst?rken. Eingegangen am 13. Januar 1995 Angenommen am 23. August 1995  相似文献   
6.
Changing issues in the field of preschool education will be discussed, set in the context of two of my studies which have been concerned with children with special needs in 'ordinary' preschool education, one 'pre-Warnock' in Scotland, and the other 'post-Warnock' in the West Midlands. The concept of special needs will then be widened to include children for whom English is a second language, and also gifted children. Finally, the discussion is extended to early education rather than preschool education with a discussion of the dangers of treating preschool education in isolation.  相似文献   
7.
In today''s environment, providers are extremely time-constrained. Assembling relevant contextual data to make decisions on laboratory results can take a significant amount of time from the day. The Regenstrief Institute has created a system which leverages data within Indiana Health Information Exchange''s (IHIE''s) repository, the Indiana Network for Patient Care (INPC), to provide well-organized and contextual information on returning laboratory results to outpatient providers. The system described here uses data extracted from INPC to add historical test results, medication-dispensing events, visit information, and clinical reminders to traditional laboratory result reports. These “Enhanced Laboratory Reports” (ELRs) are seamlessly delivered to outpatient practices connected through IHIE via the DOCS4DOCS clinical messaging service. All practices, including those without electronic medical record systems, can receive ELRs. In this paper, the design and implementation issues in creating this system are discussed, and generally favorable preliminary results of attitudes by providers towards ELRs are reported.  相似文献   
8.
医院数字化膳食管理系统的开发研制   总被引:1,自引:1,他引:0  
目的:开发智能型的患者订餐工具和后台管理软件。方法:通过该院自编的应用程序读取医院信息系统(HIS)上患者的基本信息和饮食医嘱,利用掌上电脑和数据库开发技术,完成患者订餐及订餐后的信息管理。结果:系统投入运行后,订餐速度明显提高,差错率明显降低,患者就餐满意度也有所提高。结论:该系统的使用将明显提高该院膳食保障服务水平。  相似文献   
9.
数字图书馆的个性化信息服务   总被引:6,自引:0,他引:6  
分析了国内外数字图书馆个性化信息服务的现状及相关技术,提出了建立个性化信息服务系统的方法及个性化信息服务中需要注意的问题.  相似文献   
10.
根据信息传递中我们需要准确可靠的信息这种实际情况,利用双向S-粗集理论提出了一种动态粗传递模型,即双向S-下近似动态粗传递模型.分析了该模型的特性,得到了信息保持不变、信息发生损失与知识的关系,给出了提高信息传递精确性的方法以及该模型的应用.  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