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   1296篇
  免费   170篇
  国内免费   111篇
  1577篇
  2024年   18篇
  2023年   73篇
  2022年   50篇
  2021年   43篇
  2020年   99篇
  2019年   78篇
  2018年   80篇
  2017年   71篇
  2016年   74篇
  2015年   39篇
  2014年   89篇
  2013年   214篇
  2012年   33篇
  2011年   46篇
  2010年   36篇
  2009年   33篇
  2008年   69篇
  2007年   71篇
  2006年   61篇
  2005年   67篇
  2004年   51篇
  2003年   26篇
  2002年   38篇
  2001年   18篇
  2000年   15篇
  1999年   13篇
  1998年   13篇
  1997年   11篇
  1996年   7篇
  1995年   5篇
  1994年   5篇
  1993年   2篇
  1992年   3篇
  1991年   1篇
  1990年   5篇
  1989年   2篇
  1988年   1篇
  1987年   3篇
  1986年   1篇
  1985年   7篇
  1984年   1篇
  1982年   2篇
  1979年   1篇
  1977年   1篇
  1975年   1篇
排序方式: 共有1577条查询结果,搜索用时 0 毫秒
81.
The phones hardly ring at Youthline New Zealand anymore; youth still have problems and seek help, but it mostly happens silently. This article reports on experiences of texting at a 24-hour crisis helpline for young people. To date, there has been no formal evidence base for this practice; however, for new practice, there never is. In prompting discussion, this article attends to the tight constraints that texting imposes, returning to the necessary and sufficient conditions of any effective therapeutic relationship particularly in regard to working with young people. New possibilities are demonstrated with emotional support being demonstrated even in the tightly constrained space of a text-based medium.  相似文献   
82.
Although previous research suggests Big Five (BF) and Dark Triad (DT) traits (Narcissism, Machiavellianism and psychopathy) are related to mate poaching, no studies have simultaneously examined the effects of both groups of traits on poaching. This study examined BF and DT personality traits, as well as their higher order factors as predictors of mate poaching behaviors in short-term relationships among a sample of 819 university students. Results showed DT better predicted mate poaching experiences than BF traits, though they better predicted poaching success in men. Regarding specific traits, psychopathy from DT, and extraversion from BF, were the most consistent predictors of mate poaching experiences. Considering sex differences, DT better predicted being the target of poaching in women, and being successfully poached in men. There were no consistent sex differences in the effects of BF traits on mate poaching. Generally, personality traits better predicted poaching attempts, poaching success, and being the target of poaching than other poaching experiences. Possible different roles of BF and DT traits for mate poaching experiences in men and women were discussed.  相似文献   
83.
Besides the well-known cube-on-cube orientation relationship (OR) between M23C6 carbide and matrix, we have determined a new OR named as the twin-related OR in a long-term ageing Ni-based superalloy on the basis of the extensive and detailed electron diffraction analyses. Furthermore, by means of atomic-resolution high angle annular dark-field imaging technique which is implemented in the aberration-corrected scanning transmission electron microscope, we elucidated the interfacial characteristics between M23C6 and matrix for above two types of ORs. Taking into account of the interfacial characteristics, we propose that the twin-related OR possesses a higher total interfacial energy. Thus, its frequency of occurrence is lower than that of the cube-on-cube OR though both ORs are usually seen in the long-term ageing samples.  相似文献   
84.
85.
This aim of this study was to investigate the association between perceived parental religiosity and the quality of the parent–child relationship. Eighty-nine adolescent boys and girls completed the Santa Clara Strength of Religious Faith Questionnaire (SCSRFQ) and the Parent–Child Relationship Survey (PCRS). The results showed that the girls had a better relationship with their mothers than with their fathers, while the boys tended to view their relationships with their father and mother of equal quality. It was also found that greater perceived religiosity of both the fathers and mothers was associated with a better parent–child relationship.  相似文献   
86.
The personality factor of extraversion has been associated with performance in some occupations (e.g., sales), and it has been one of the most consistent personality predictors of leadership. Recent research indicates that extraversion could have a non-linear relation with performance. At the same time, many researchers have contended that scholars should utilize measures of personality narrower than factors and that the bandwidth and relevance of personality should fit both the criterion and the context of a study. We argue and find that by examining an aspect of extraversion (i.e., social potency) in a particular vocational context (i.e., enterprising job demands), non-linear, asymptotic (diminishing marginal benefits) effects will be demonstrated on a relevant type of performance (i.e., enterprising job performance). We review implications, limitations, and avenues for future research.  相似文献   
87.
The use of empirical prior information about participants has been shown to substantially improve the efficiency of computerized adaptive tests (CATs) in educational settings. However, it is unclear how these results translate to clinical settings, where small item banks with highly informative polytomous items often lead to very short CATs. We explored the risks and rewards of using prior information in CAT in two simulation studies, rooted in applied clinical examples. In the first simulation, prior precision and bias in the prior location were manipulated independently. Our results show that a precise personalized prior can meaningfully increase CAT efficiency. However, this reward comes with the potential risk of overconfidence in wrong empirical information (i.e., using a precise severely biased prior), which can lead to unnecessarily long tests, or severely biased estimates. The latter risk can be mitigated by setting a minimum number of items that are to be administered during the CAT, or by setting a less precise prior; be it at the expense of canceling out any efficiency gains. The second simulation, with more realistic bias and precision combinations in the empirical prior, places the prevalence of the potential risks in context. With similar estimation bias, an empirical prior reduced CAT test length, compared to a standard normal prior, in 68% of cases, by a median of 20%; while test length increased in only 3% of cases. The use of prior information in CAT seems to be a feasible and simple method to reduce test burden for patients and clinical practitioners alike.  相似文献   
88.

采用目的抽样选取成都市、绵阳市及西昌市19名HIV/AIDS患者作为研究对象,采用描述性质性研究对研究对象进行半结构式访谈,对访谈结果进行主题分析,共提炼出一级主题5个:(1)患者有基于移动医疗的自我管理需求;(2)基于移动医疗自我管理平台期望载体及形式;(3)基于移动医疗的医疗或行为管理需求;(4)基于移动医疗的角色管理需求;(5)基于移动医疗的情绪管理需求。患者对基于移动医疗的自我管理平台有较高接受度。可设计开发易用性与隐私性强的移动医疗平台,通过提供疾病知识、线上诊疗、疾病监测与心理社会支持等功能,提升患者自我管理能力。

  相似文献   
89.

采用文献分析法,结合专家咨询,对患者就医伦理责任进行概念与范畴界定,拟定问卷条目。采用随机抽样调查法对南通市某三级甲等医院的患者进行问卷调查。问卷可划分为责任范畴认知、责任态度信念两个维度,共计18道条目,累计方差贡献率为82.434%。项目分析中各分析项均呈现出显著性差异(P<0.05)。问卷总体的Cronbach's α系数为0.979,内容效度为0.910,在结构效度分析中,问卷因子分析KMO值为0.971,聚敛效度和区分效度皆达到标准。本问卷具有良好的信效度,可为日后进一步的研究分析提供科学可靠的依据。

  相似文献   
90.

重大传染病疫情背景下,病原体的不断变异、疫苗保护效力的不确定性以及诸多后遗症会导致疫情难以控制,并且造成一个数量极其庞大的特殊弱势群体—感染患者。在感染患者从疑似患病到康复的期间,影响他人工作生活、恶化疫情防控形势、感染他人、亲友的抛弃、传染病污名化、医疗资源分配不均以及社会的歧视与排挤等潜在的道德创伤源会对其内心原本的道德体系产生巨大的冲击,甚至改变其原有的道德认知并击溃其积极的道德情感,从而产生道德创伤。在此基础上,感染患者会因此产生一系列社会问题、信任问题、精神问题、生存问题以及诸多消极观念。

  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