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   4301篇
  免费   69篇
  4370篇
  2021年   41篇
  2020年   68篇
  2019年   62篇
  2018年   126篇
  2017年   107篇
  2016年   102篇
  2015年   71篇
  2014年   73篇
  2013年   341篇
  2012年   145篇
  2011年   131篇
  2010年   85篇
  2009年   104篇
  2008年   108篇
  2007年   115篇
  2006年   93篇
  2005年   88篇
  2004年   79篇
  2003年   64篇
  2002年   66篇
  2001年   130篇
  2000年   96篇
  1999年   82篇
  1997年   39篇
  1996年   39篇
  1993年   45篇
  1992年   65篇
  1991年   71篇
  1990年   63篇
  1989年   57篇
  1988年   64篇
  1987年   58篇
  1986年   51篇
  1985年   62篇
  1984年   60篇
  1983年   46篇
  1982年   51篇
  1981年   41篇
  1979年   59篇
  1978年   58篇
  1977年   51篇
  1976年   45篇
  1975年   64篇
  1974年   62篇
  1973年   57篇
  1972年   52篇
  1971年   53篇
  1968年   49篇
  1967年   60篇
  1966年   43篇
排序方式: 共有4370条查询结果,搜索用时 0 毫秒
131.
The authors investigated the extent to which racial factors, cultural factors, or both influence a person's beliefs about physical time, personal time, and experienced and remembered duration. A total of 750 Black American, Black African, and White American students responded to a questionnaire on these beliefs about time. Factor analysis was used to compare belief structures. Pairwise comparisons, performed separately for each statement, tested the direction and strength of the reported beliefs. The groups showed many similarities, but they also showed some differences. All 3 groups differed in beliefs about physical and personal time, but they did not differ in beliefs about duration experiences. This evidence does not support simplistic views of racial or cultural influences. Culture may differentially influence beliefs about physical time and personal time. Beliefs about duration experiences may represent an ethnic factor that transcends cultures.  相似文献   
132.
Backward-masking functions have been hitherto categorized into two types, commonly named Type A and Type B. The analysis of a model of Retino-Cortical Dynamics produces the prediction that spatially localized stimuli should reveal an oscillatory metacontrast function. The predicted new type of metacontrast masking function was investigated in a psychophysical experiment. The results show oscillatory metacontrast functions with significant power in the gamma range (30-70 Hz). A marked decrease in the oscillations is observed when the spatial extent of the stimuli is increased. The theoretical basis of the study relates the oscillations found in the metacontrast function to gamma-range oscillations observed in scalp and intracerebral recordings. The qualitative agreement between the model and data provides support for this putative relationship.  相似文献   
133.
The Psychological Record - We developed an intervention to promote generalization in an applied community setting. The intervention was derived primarily from experimental research examining...  相似文献   
134.
    
Previous work from our laboratory showed that intermittently re-exposing rats to reinforcement for lever pressing in a training (A) context, while eliminating lever pressing in a second (B) context, increased ABA renewal of lever pressing relative to rats that experienced only Context B during response elimination. In the current study, we replicated these procedures while assessing renewal in the presence of a novel context (i.e., ABC renewal). Unlike the findings described above, renewal was reduced in the group that experienced re-exposure to Context A during lever-press elimination relative to rats that experienced only Context B. These findings suggest that alternating between contexts associated with reinforcement and extinction during treatment reduces the probability that organisms will respond in novel contexts. These outcomes may be the result of discrimination and/or generalization processes. Moreover, this training procedure may offer a potential mitigation strategy for ABC renewal.  相似文献   
135.
136.
ABSTRACT

Understanding individuals’ encounters with Customs and Border Protection (CBP), the largest law enforcement agency in the United States, is an important theoretical and policy-relevant issue. Travelers entering the U.S. through ports of entry may generalize their experiences with border officials to local law enforcement, and thus, negative experiences at ports of entry may reduce travelers’ willingness to cooperate with police and report victimization. Existing studies, however, have primarily examined unauthorized border crossings rather than travelers’ port of entry experiences. This study uses grounded theory and qualitative data to explore the perceptions and experiences of 191 young adults who discussed how individuals are treated when crossing the U.S.-Mexico border at land ports of entry. Findings show that participants reported perceptions and experiences of discrimination based on physical appearances, language differences, and nationality. Participants also described border officials engaging in routine law enforcement behaviors, including poor policing practices.  相似文献   
137.
ABSTRACT

Historically, the news media has been a primary participant in the construction of moral panics surrounding various drugs and their users. The current study utilizes the moral panic framework to depict how the media represents a drug new to the Western world: kratom. Kratom, a traditional plant-based substance from South Asia, came in to the public’s view when the DEA announced its intent to emergency schedule the substance, citing a threat to public health. We use content analysis to explore how kratom and kratom use is depicted in a sample of news media articles gathered from an online source. Broadly, we find that the news media seems to report more information about the substance and less hyperbole than is typical of media reports on drugs in the past.  相似文献   
138.
    
ABSTRACT

The ubiquity of the internet, which has been extensively theorised in the social sciences, provides, for some, a radically new context in which we must rethink both the significance and the performance of being human. For others, the internet is an extension rather than revision of our pre-existing practices, meaning that what it is to be human remains largely unchanged. This is a stimulating and pressing context for theological anthropological reflection: theological doctrines do not specifically address cyberspace, but they suggest idea(l)s of being human that are, on the one hand, enduring and yet can also be read as flexible for different contexts. What, then, are the challenges and promises that digital contexts pose for models of theological anthropology, specifically ones that highlight the significance of human relationships? Do digital contexts overstretch idea(l)s of human nature? On what grounds can we assess and reflect on our conduct in cyberspace?  相似文献   
139.
    
According to the orthodox view of Kant's philosophy of music, Kant is the founder of musical formalism, the view that music is pure, contentless form, and appreciated as such. On this orthodox view, Kant is an innovator in philosophy of music, though his views are confused and sometimes contradictory. Sometimes, we are told, Kant indicates that music is a fine art and sometimes that it is merely an agreeable art. None of the orthodox position is correct. Kant's views on music are familiar, even a little old fashioned for their time. His views are consistent. He believes that some music is fine art and that the fine arts are imitative arts. Imitative arts have content, and Kant believes that at least some music has content. Our views on Kant's philosophy of music ought to be thoroughly revised.  相似文献   
140.
    
Pro-group unethical behaviour (PGUB) refers to a set of behaviours that conflict with moral standards but are beneficial to the interests of an actor's workgroup. Drawing on social cognitive theory, this research investigates whether, how, and when perceived co-worker PGUB leads employees to engage in the same unethical behaviour. We propose that moral disengagement is a crucial mechanism through which PGUB is transmitted from co-workers to employees and that this relationship is further amplified by employees' group identification. The results of three field studies featuring different samples consistently highlight the mediating role of moral disengagement in the relationship between perceived co-worker PGUB and employee PGUB. Furthermore, employees who identify strongly with their workgroup are more likely to exhibit moral disengagement and learn their co-workers' PGUB than are employees with low group identification. The findings of this research provide insights for both theory and practice.  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