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   1505篇
  免费   85篇
  国内免费   34篇
  1624篇
  2025年   5篇
  2024年   27篇
  2023年   35篇
  2022年   106篇
  2021年   91篇
  2020年   120篇
  2019年   43篇
  2018年   103篇
  2017年   78篇
  2016年   84篇
  2015年   53篇
  2014年   69篇
  2013年   124篇
  2012年   20篇
  2011年   32篇
  2010年   16篇
  2009年   32篇
  2008年   34篇
  2007年   35篇
  2006年   47篇
  2005年   38篇
  2004年   36篇
  2003年   25篇
  2002年   26篇
  2001年   26篇
  2000年   19篇
  1999年   19篇
  1998年   9篇
  1997年   15篇
  1996年   6篇
  1995年   15篇
  1994年   4篇
  1993年   4篇
  1992年   6篇
  1991年   8篇
  1988年   8篇
  1986年   4篇
  1985年   16篇
  1984年   21篇
  1983年   25篇
  1982年   20篇
  1981年   23篇
  1980年   17篇
  1979年   20篇
  1978年   20篇
  1977年   11篇
  1976年   9篇
  1975年   5篇
  1974年   5篇
  1973年   3篇
排序方式: 共有1624条查询结果,搜索用时 15 毫秒
71.
This commentary discusses the four papers from the vantage point of a cognitive-developmental view. Psychotherapeutic change involving changes in core cognitive structures is seen as threatening an individual's personal sense of identity as well as security and safety needs. Core cognitive constructs are laid down early via the principle of covariation of events and form the basis of our tacit knowledge base. Subsequent changes in this tacit knowledge is difficult because the core cognitive constructs act like a mental filter to screen in confirming data and screen out disconfirming data. Ambiguous stimuli tend to be interpreted on the basis of preexisting cognitive constructs, even when the match between event and interpretation is not ideal. Several suggestions are given for increasing the probability of changes occurring in core cognitive constructs.  相似文献   
72.
This study compared the effectiveness of a videotape training program with other methods of teaching children self-protection to prevent child abduction. Subjects were kindergarten and first-grade students. Four experimental conditions were presented: videotape with behavior rehearsal, videotape only, a standard safety program, and no training. Acquisition of self-protective behaviors was measured at posttraining and follow-up by having confederate adults entice the children near their schools and homes. Results revealed that the videotape program with behavior rehearsal was highly effective in teaching children safe responses to potential abductors. The standard safety program was effective with fewer than half of the children. Three fourths of the children who received no training immediately agreed to go with the confederate suspects. The videotape program can be easily used with groups of young children in a classroom setting.  相似文献   
73.
This paper considers the views of Alexander Dugin, a leading proponent of Eurasianism in contemporary Russia. The point of his teaching is the preservation of the traditional social/cultural make-up of each civilization. He also believes that the Russian Slavs together with the minorities of the Russian Federation constitute a quasi-unity of Eurasian civilization. He emphasizes that globalism, led by the USA, is a mortal threat to the cultural identity of Russia/Eurasia and all other civilizations. For this reason the USA and Russia are locked in mortal conflict with one other. At the outset of his intellectual career, in post-Soviet Russia, Dugin believed that Putin would follow the Eurasian road. It would be wrong to see Dugin as an intellectual guru at the head of the post-Soviet elite. Still, his views are important, for they indicate the kinds of ideas that circulate in the minds of the Russian elite.
Dmitry ShlapentokhEmail:
  相似文献   
74.
抗菌药物不合理应用现象长期得不到纠正,细菌耐药稳步攀升,正引起医学界、社会和政府的高度关注。本文就宏观上的抗菌药物使用政策与微观上的临床用药两方面存在的问题进行探讨。介绍了国际上关于抗菌药物政策的研究以及抗菌药物合理使用的新观点(尽早开始经验性治疗、“降阶梯”治疗策略、运用抗菌药物PK/PD原理指导临床用药、短程治疗)。主张调整宏观抗生素策略,去除该政策单纯、片面限制使用和应用药敏实验结果指导临床用药绝对化的做法。吸纳国际上的新成果,强化监管力度,更多采用教育和技术手段。  相似文献   
75.
There are approximately one million cases oftype 1 diabetes in the US, and the incidenceis increasing worldwide. Given that two-thirdsof cases present in childhood, it is criticalthat prediction and prevention research involvechildren. In this article, I examine whethercurrent research methodologies conform to theethical guidelines enumerated by the NationalCommission for the Protection of Human Subjectsof Biomedical and Behavioral Research, andadopted into the federal regulations thatprotect research subjects. I then offer twopolicy recommendations to help researchersdesign studies that conform to these ethicalrequirements.  相似文献   
76.
隆乳术不仅可以重塑女性的形体美,而且可以增强女性的自信心,在当前具有广阔的市场。纵观隆乳术的发展演变史,从最初的注射隆乳术到自体组织隆乳术,再到当前的假体隆乳术和自体脂肪移植隆乳术,经历了“实践、认识、再实践、再认识”的多次反复。各种隆乳方式各具特色,其间既有成功的经验,又有失败的教训。针对隆乳术安全性的改进推动了隆乳术的不断向前发展。寻找一种安全有效的隆乳方式和理想的隆乳材料成为当前隆乳术发展的关键和整形外科医师关注的重点。  相似文献   
77.
A problem-solving strategy was used to teach three groups of 3 individuals in supported employment how to prevent work-related injuries. The problem-solving strategy was taught in two training phases. The first training phase involved the use of cue cards, and the second involved the withdrawal of the cue cards. Interviews and staged generalization assessments in the participants' natural work environments were conducted before, during, and up to 12 weeks after training. In these assessments, situations were presented that were either similar or dissimilar to situations presented in training. Results of both the interviews and staged assessments indicated that the participants' newly acquired problem-solving skills generalized to similar and dissimilar situations.  相似文献   
78.
Harvey's cognitive model of insomnia (2002a) proposes that sleep-related safety behaviors play a central role in the maintenance of insomnia because such maladaptive coping strategies are thought to reinforce threat-based appraisals of the likelihood and consequences of poor sleep. Research to date has assessed the frequency of safety behavior use in those with insomnia only; however, in addition to the frequency of occurrence, the function of safety behaviors (i.e., a belief that they will prevent a feared outcome from occurring), may be an important consideration. The purpose of this study was to examine sleep-related safety behaviors based on an expanded theoretical understanding of such behaviors across psychological disorders; that is, by examining both their frequency and perceived utility. Undergraduate students (N = 376) completed an online survey about their sleep, mood, and use of sleep-related safety behaviors. Insomnia severity was associated with a greater perceived need to use safety behaviors (i.e., utility) but not with frequency of safety behavior use. Higher perceived utility of safety behaviors was also associated with unhelpful beliefs about sleep, fear and avoidance of fatigue, and both general and sleep-specific helplessness. These results suggest that these behaviors and the associated underlying maladaptive beliefs may be important targets in cognitive behavioral therapy for insomnia. The current study extends the existing literature and refines the concept of safety behaviors in insomnia to include both the function and frequency of these behaviors.  相似文献   
79.
探讨并分析严重胫骨骨折的手术方式。2003年9月-2010年12月我院收治的86例严重胫骨骨折进行随机分组治疗,外固定架组39例,钢板组47例,分析两组并发症及骨折愈合时间。结果86例患者均进行随访,随访时间7个月~28个月,平均10.3个月,钢板组并发症多,骨折愈合时间短,外固定架组愈合时间长。严重胫骨骨折临床多见,应根据其类型选择合理的钢板或外固定架进行治疗固定,使患者获得最佳效果。  相似文献   
80.
Owing to the sexuation of occupations associating technical attributes with men and relational skills with women, the latter are less numerous in professions where driving is involved. The negative stereotype associating women with poor driving skills is thus likely to have a cognitive and behavioral impact. According to the model of the stereotype threat, could activation of the threat inhibit the performance of women in a Highway Code test? After performing an association task that demonstrated a largely negative stereotype, 56 female students took a Highway Code test in two conditions: an experimental condition where the stereotype was activated by a comparison between men and women (N = 17); and a control condition without activation (N = 39). Subjects performed less well in the experimental condition, demonstrating the expected effects of the stereotype threat.  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