全文获取类型
收费全文 | 1843篇 |
免费 | 242篇 |
国内免费 | 657篇 |
专业分类
2742篇 |
出版年
2024年 | 6篇 |
2023年 | 37篇 |
2022年 | 58篇 |
2021年 | 69篇 |
2020年 | 110篇 |
2019年 | 59篇 |
2018年 | 93篇 |
2017年 | 90篇 |
2016年 | 106篇 |
2015年 | 65篇 |
2014年 | 100篇 |
2013年 | 167篇 |
2012年 | 156篇 |
2011年 | 157篇 |
2010年 | 134篇 |
2009年 | 121篇 |
2008年 | 141篇 |
2007年 | 195篇 |
2006年 | 185篇 |
2005年 | 139篇 |
2004年 | 93篇 |
2003年 | 72篇 |
2002年 | 59篇 |
2001年 | 42篇 |
2000年 | 37篇 |
1999年 | 31篇 |
1998年 | 17篇 |
1997年 | 21篇 |
1996年 | 18篇 |
1995年 | 12篇 |
1994年 | 13篇 |
1993年 | 10篇 |
1992年 | 13篇 |
1991年 | 13篇 |
1990年 | 12篇 |
1989年 | 9篇 |
1988年 | 3篇 |
1987年 | 5篇 |
1986年 | 7篇 |
1985年 | 11篇 |
1984年 | 11篇 |
1983年 | 6篇 |
1982年 | 9篇 |
1981年 | 11篇 |
1980年 | 8篇 |
1977年 | 2篇 |
1973年 | 2篇 |
1969年 | 1篇 |
1968年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有2742条查询结果,搜索用时 15 毫秒
261.
李艳 《医学与哲学(人文社会医学版)》2010,31(13):20-21
在一些<医学伦理学>教材中,对医学道德的基本原则表述不规范,对两套医学道德的基本原则要么在概念上认知模糊,要么在内容上表达不准确.而且对两套医学道德基本原则之间的内在关系难以辩证统一.导致医学生在学习的过程中对其概念认知混乱,找不到自己医疗行为的准确定位.通过对医学道德基本原则的论证,对医学道德基本原则概念认知达成共识. 相似文献
262.
本研究介绍并引进了现代测量理论中的前沿技术—— 多维项目反应理论, 采用MCMC算法实现了其参数估计; 并将MIRT应用于瑞文高级推理测验, 以探讨MIRT在心理测验中的具体应用。研究结果表明:(1)本研究自主编制的MIRT参数估计程序基本可行, 其估计的精度与国外研究结论相当甚至更好。(2)在测验维度和样本容量两因素完全随机实验设计下(2×3), 随着被试和题目样本容量的增加, MIRT参数估计的精度越高且估计的稳定性越强; 但随着测验维度的增加, MIRT参数估计精度和稳定性均随之降低。(3)MIRT对心理测验的分析比UIRT能提供更为精确和细致的信息。它对心理测验的编制、开发及评价具有重要的指导和参考价值, 值得引进及借鉴。 相似文献
263.
The theory of planned behavior has been applied to sports and exercise behaviors. According to this theory, human intention to take action in a specific context is guided by three antecedents: attitude, subjective norm, and perceived behavioral control. Behavioral intention mediates the relationships between these three considerations and its ultimate performance. However, this theory has seldom been applied to the behaviors of spectators of sporting events. A sample of 269 volleyball spectators in Taiwan was studied to examine whether people's intention mediated their attitudes, subjective norms, and perceived behavioral control toward a given behavior, watching the 2010 Fédération Internationale de Volleyball World Grand Prix in Taipei. Regression analyses did not support behavioral intention as a mediator. This result is discussed in the context of planned behavior. 相似文献
264.
The purpose of this study was to explore adolescents' perceptions and attitudes regarding the Internet, by gender. Data were collected from 636 high school students in Taiwan. It was found that male adolescents perceived the Internet more as a "toy," while female adolescents perceived the Internet more as a "technology," "tool" or "tour." Results indicated that females held more pragmatic views of the Internet, whereas males believed they could obtain more enjoyment from the Internet. In addition, males expressed significantly more positive attitudes than did females on two aspects of the Internet: usefulness and perceived control. However, no significant gender differences were found in terms of the affection and behavior aspects of using the Internet. More importantly, females tended to show higher Internet self-efficacy than did males. It is suggested that gender differences regarding the Internet might be narrowing because female adolescents are acquiring more experience with it. 相似文献
265.
266.
267.
This study investigated the effect of different types of distractions related to use of a hands-free phone on driving performance. The study used three types of verbal distractors: casual conversation, simple arithmetic number guessing, and number adding, in the phone conversation. 12 adults were instructed to follow a lead vehicle on a closed-course highway in a fixed-based driving simulator. The results showed that use of a hands-free cellular phone involving verbal and cognitive distractions impaired driving performance and skill. Types of distraction produced significantly different effects on several dependent variables: the driving speed, headway (distance between the lead car and the manipulated car), brake reaction time, and number of collisions with the lead car. In general, the higher the cognitive load involved in the dialogue, the worse the driving performance. 相似文献
268.
269.
Yuan-Huei W. Lin Chester A. Insko Caryl L. Rusbult 《Journal of applied social psychology》1991,21(14):1169-1206
A cross-cultural experiment tested predictions regarding reward allocation decisions among subjects in the United States and Taiwan. The experiment included five independent variables—two between-subject factors (American vs. Chinese; instrumental vs. unspecified vs. social-emotional allocator orientation) and three within-subject factors (high vs. low employee competence, social skill, and mobility). In general, Americans and Chinese distributed rewards quite similarly: In both cultures, allocators distributed greater rewards to employees who were more competent and possessed greater social skill. In both cultures, instrumental allocator orientation induced stronger tendencies to base allocations on competence; social-emotional allocator orientation induced stronger tendencies to base allocations on social skill. In both cultures, subjects engaged in competence-based "rational selective exploitation"—among highly competent employees, those with greater professional mobility received larger portions of the reward pool than did counterparts with constrained mobility. In both cultures, subjects also evidenced an unexpected social-skill-based rational selective exploitation—among employees with good social skill those with greater professional mobility received larger portions of the reward pool than did counterparts with constrained mobility. However, there were a number of interactions with culture that ran contrary to our a priori predictions: We hypothesized that Americans would exhibit greater individualism by focusing on competence in allocating outcomes, and that Chinese would exhibit greater collectivism by focusing on social skill. Although Americans did attend to employee competence more than Chinese, Americans also attended to employee social skill more than Chinese. These findings are discussed in terms of an expanded conceptualization of the nature of individualism and collectivism. 相似文献
270.
研究视觉分别搜索在左右视野靶时,脑两侧前额叶视觉加工的机制。14名有偿被试参加实验。实验任务是从正圆中所存在的垂直方向的箭头,搜索出水平方向箭头,并判断箭头方向。靶所在左右视野经过镜面处理完全对应。结果发现当靶出现约220ms后左右两侧脑区ERP出现分叉点,靶对侧与靶同侧的前脑区相比有非常显著的负向电位活动,对侧和同侧的N2延续40-80ms。分析认为靶对侧前额脑区N2负向活动增强是注意的等级提高,聚焦点收窄,使所要加工的靶在主效应脑区(靶视野对侧脑区)“跃显”出来,在得到正反馈诱导的同时,也得到更多的资源,靶同侧脑区N2可能与中断或阻止其他无关信息的涌入有关。 相似文献