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   184篇
  免费   2篇
  186篇
  2024年   3篇
  2023年   4篇
  2022年   1篇
  2021年   5篇
  2020年   4篇
  2019年   11篇
  2018年   10篇
  2017年   9篇
  2016年   15篇
  2015年   6篇
  2014年   8篇
  2013年   16篇
  2012年   14篇
  2011年   16篇
  2010年   2篇
  2009年   9篇
  2008年   12篇
  2007年   8篇
  2006年   3篇
  2005年   9篇
  2004年   3篇
  2003年   5篇
  2002年   1篇
  2001年   2篇
  2000年   1篇
  1999年   3篇
  1998年   1篇
  1994年   1篇
  1991年   1篇
  1990年   2篇
  1983年   1篇
排序方式: 共有186条查询结果,搜索用时 15 毫秒
131.
    
Age‐related differences in sensory functioning, processing speed, and working memory have been identified as three significant predictors of the age‐related performance decline observed in complex cognitive tasks. Yet, the assessment of their relative predictive capacity and interrelations is still an open issue in decision making and cognitive aging research. Indeed, no previous investigation has examined the relationships of all these three predictors with decision making. In an individual‐differences study, we therefore disentangled the relative contribution of sensory functioning, processing speed, and working memory to the prediction of the age‐related decline in cognitively demanding judgment and decision‐making tasks. Structural equation modeling showed that the age‐related decline in working memory plays an important predictive role, even when controlling for sensory functioning, processing speed, and education. Implications for research on decision making and cognitive aging are discussed. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
132.
133.
    
Today, global concerns are at their peak due to the fast-growing number of refugees. The world faces the dilemma of the refugee crisis, which needs to be addressed by the United Nations (U.N.) sustainable development goals (SDGs). Pakistan hosts about 1.4 million registered refugees in camps and urban areas. The majority consist of Afghans who departed due to severe poverty, conflict, and security concerns. These refugees bring socio-economic distress to the host country. In order to comprehend the whole crisis, this study primarily focuses on three areas: the unstable political and security situation in the country of origin, the refugee concerns and their implications. This research is unique throughout the literature as it applies the interpretive structural modelling (ISM) tool to view the refugee crisis holistically. Results from ISM show that the ‘Political situation of Afghanistan’ is the most influential factor with very high driving power. Afterward, 10 resulting factors were opted from the ISM model, which demonstrate the implications on the host country. The relative importance index (RII) approach was used to rank the resultant factors. Ranking from RII depicts a significantly different impact of refugees while residing in urban areas. Using the Prisoner's dilemma of cooperative game theory (GT), this study concludes by recommending refugees to get registered and the host country to settle them in the local population. The use of cooperative GT with the nexus of ISM and RII is also exceptional and will be helpful for researchers and policymakers to resolve any conflict.  相似文献   
134.
The dissemination of Web applications is extensive and still growing. The great penetration of Web sites raises a number of challenges for usability evaluators. Video-based analysis can be rather expensive and may provide limited results. In this article, we discuss what information can be provided by automatic tools able to process the information contained in browser logs and task models. To this end, we present a tool that can be used to compare log files of user behavior with the task model representing the actual Web site design, in order to identify where users’ interactions deviate from those envisioned by the system design.  相似文献   
135.
This study investigated changes in postural control complexity in people with multiple sclerosis (PwMS) before and after a fatigue protocol. Thirteen minimally affected PwMS (1.53 ± 1.03- Expanded Disability Status Scale) and 12 non-MS controls. Postural test included quiet stance on a force platform under two visual conditions (saccades and fixation) before and after a fatigue protocol. Postural complexity was assessed through the multiscale entropy. A three-way ANOVA showed a main effect of fatigue in the medial-lateral direction (p <0.007), with fatigue protocol reducing postural complexity in both groups. No differences were found between groups or visual conditions. Minimally affected PwMS demonstrated similar postural complexity compared with non-MS controls under both visual tasks and showed similar decrements in postural complexity as a result of fatigue.  相似文献   
136.
Controversies exist regarding the impact of psychological stress on the functioning of the immune system in humans. The aim of the present study, therefore, was to evaluate whether the condition of a pre-exam stress may or not modify resting lymphocyte subsets, as well as blood pressure and heart rate. About 22 medical residents of both sexes not suffering from any medical or psychiatric disorder were included in the study. Anxiety levels were measured by means of the Hamilton rating scale for anxiety (HRSA) and anxiety traits by means of the panic-agoraphobic spectrum self-report (PAS-SR) version and the obsessive-compulsive spectrum self-report (OBS-SR) version. The results showed that systolic blood pressure and heart rate increased significantly just before sitting an examination (t(1)) in all subjects, as compared with a calm situation (t(2)), in parallel with the increase in the HRSA total score, while no significant difference was observed in lymphocyte subsets at the two assessment times. However, men had a higher number of CD4+ cells than women at t(1) and t(2), while women showed a higher heart rate at t(1). In addition, significant correlations between CD4+ lymphocyte count and heart rate at t(1) or HRSA at t(2) were detected. These findings indicate that the acute stress determined by sitting for examination provokes changes in autonomic nervous system parameters, such as blood pressure and heart rate, as well as in the subjective feeling of anxiety, as shown by the increased HRSA total scores, which were not paralleled by modifications of lymphocyte subsets. However, individual differences, related to both sex and personality traits yet to be identified, seem to have an impact in shaping the stress response.  相似文献   
137.
    
In language learning, learners engage with their environment, incorporating cues from different sources. However, in lab-based experiments, using artificial languages, many of the cues and features that are part of real-world language learning are stripped away. In three experiments, we investigated the role of positive, negative, and mixed feedback on the gradual learning of language-like statistical regularities within an active guessing game paradigm. In Experiment 1, participants received deterministic feedback (100%), whereas probabilistic feedback (i.e., 75% or 50%) was introduced in Experiment 2. Finally, Experiment 3 explored the impact of mixed probabilistic feedback (33% positive, 33% negative, 33% no feedback). The results showed that cross-situational learning of words was observed without feedback, but participants were able to learn structural regularities of the miniature language only when feedback was provided. Interestingly, the presence of positive feedback was particularly helpful for the learner, promoting more in-depth learning of the artificial language.  相似文献   
138.
The author discusses the risks confronting the training analysis when original theoretical production is lacking. In his view, little progress has been made since Freud's time in establishing a general science of the psyche based on Freud's interpretive method. What has been transmitted is stated to be not Freud's method of discovery but the knowledge thereby produced, which has been handed down in the form of doctrines, defined as theory presented as psychic fact. Hence analyses tend to apply theories rather than to discover unconsciouses. Some of today's most common interpretational aberrations are described, and the author shows the powerful suggestive effect on patients of using doctrines as metaphors of psychic life. Where such a training analysis is reinforced by a like form of theoretical teaching and supervision, candidates may uncritically assimilate the relevant theory. The author uses his concept of the reality‐providing circuit to show how belief in a doctrine imparted by the training analysis makes that doctrine appear as the ideological basis of psychoanalytic knowledge. He finally notes that, theories being essentially heuristic instruments and not bodies of acquired information, the consequence of the current dearth of theories, which have degenerated into doctrines, is that the training analysis itself has come to constitute the theory of training in many institutes.  相似文献   
139.
Perhaps unique among the animal species, humans are aware that they will ultimately die. Terror management theory (TMT) posits that investing in a social group helps people to manage paralysing anxiety stemming from death awareness. In line with this proposition, research to date has shown that when reminded of their own mortality, people increase their identification with a relevant group and defend its beliefs, values, and practices. In the reported study, we demonstrate that a mortality salience induction enhances people’s perceptions of group temporal endurance—or perceived collective continuity (PCC), as we define it. Enhanced PCC leads, in turn, to enhanced group identification. This is in line with the TMT assumption that death awareness leads people to invest in a social group because this constitutes a temporally enduring meaning-system that imbues life with meaning, order, and permanence, and promises death transcendence to those who meet the prescribed standards of value.  相似文献   
140.
In this paper, we introduce a novel type of persuasive system aimed at orienting a group conversation in a casual setting. The system is based on a tabletop display complemented by a limited speech recognition system (a word spotter). It affects group behavior indirectly by presenting on the shared interface contextually appropriate visual material in a way reminiscent of the tradition of advertising: attention-catching, evocative, and cognitively stimulating. The system is meant to be used in the context of a museum visit. The purpose is to influence a group of friends so that they discuss their museum experience, while sitting at the museum café after the visit. Results show the system in the current version has a moderate effect on group behavior and provide indications for promising improvements.  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