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   627篇
  免费   32篇
  国内免费   7篇
  2023年   18篇
  2022年   22篇
  2021年   32篇
  2020年   23篇
  2019年   33篇
  2018年   20篇
  2017年   22篇
  2016年   38篇
  2015年   28篇
  2014年   27篇
  2013年   87篇
  2012年   11篇
  2011年   31篇
  2010年   18篇
  2009年   38篇
  2008年   43篇
  2007年   30篇
  2006年   18篇
  2005年   16篇
  2004年   14篇
  2003年   8篇
  2002年   10篇
  2001年   4篇
  2000年   4篇
  1999年   6篇
  1998年   2篇
  1997年   2篇
  1996年   1篇
  1995年   5篇
  1994年   4篇
  1993年   2篇
  1991年   1篇
  1990年   1篇
  1989年   1篇
  1988年   1篇
  1987年   1篇
  1986年   3篇
  1985年   3篇
  1984年   4篇
  1983年   4篇
  1982年   3篇
  1981年   3篇
  1980年   6篇
  1979年   3篇
  1978年   5篇
  1977年   5篇
  1976年   2篇
  1974年   2篇
  1967年   1篇
排序方式: 共有666条查询结果,搜索用时 15 毫秒
181.
ObjectivesTo examine athletes’ implicit and explicit prototype perceptions of performance enhancing substance (PES) users and non-users.DesignA cross-sectional mixed-method study.MethodsCompetitive athletes from 39 sports (N = 226; mean age = 27.66 ± 9.74 years; 59% male) completed four self-report questions and two Brief Implicit Association Tests online, assessing prototype favourability and similarity of PES users and non-users.ResultsAthletes explicitly associated themselves with a non-user (M = 3.13 ± 0.92) more than a PES user (M = 0.56 ± 0.88) and perceived a non-user (M = 89.92 ± 14.98) more favourably than a PES user (M = 13.18 ± 21.38). Indexing behaviour on self-reports, doping contemplators did not differ from ‘clean’ athletes in their perceptions of PES user prototypes while dopers perceived PES users favourably and similar to themselves. In comparison, doping contemplators paired the concept of 'dopers' easier with themselves than with others, while clean athletes and dopers had no preference for either pairing (D = −0.33, -0.08 and 0.01, respectively). All groups demonstrated some degree of preference for ‘good and doper’, moving from slight to moderate to strong preference in the groups of clean athletes, dopers and contemplators, respectively (D = −0.20, −0.37 and −0.80, respectively).ConclusionsResults suggest that doping contemplators may have a positive bias towards doping which is not endorsed in self-reports. Implicit preferences, along with the disparity between the implicit and explicit measures of athletes’ doping-related prototype perceptions advance understanding of doping behaviour and make a unique contribution to research methodology. Factors influencing the interplay between explicit and implicit endorsements of PES user prototypes warrant further research.  相似文献   
182.
Although drivers can adequately adjust their operating speed according to the road curvature, they show a lack of recognition regarding the pavement friction conditions. In this regard, inappropriate speed selection on Horizontal Curves (HCs) with reduced surface friction can lead to a remarkable rate of run-off-road, sideswipe, head-on, and rollover crashes, especially on rural highways. Aligned with the Connected Vehicle (CV) Pilot Program on Interstate-80 in Wyoming, this study scrutinizes how CV advisory/warning messages can enhance traffic safety on slippery HCs. To this aim, a roadway consists of two HCs with regular and slippery pavement conditions was designed in a high-fidelity driving simulator experiment. A total of 24 professional truck drivers were recruited to drive the simulated roadway under CV and non-CV environments. In the CV scenario, drivers were informed about the pavement conditions and the advisory speeds before entering HCs. In contrast, no messages were given to non-CV drivers. Truck drivers' behaviors in both scenarios were quantified using four Kinematic-based Surrogate Measures of Safety (K-SMoS), including deviation from the pathway, instantaneous acceleration, lateral speed, and steering angle. CVs’ trajectories were statistically compared to non-CVs in terms of the central tendency and dispersion using the Wilcoxon Signed-Rank Test (WSRT) and Median Absolute Deviation (MAD), respectively. The results of WSRT depicted, under the effect of CV advisory/warning messages and throughout the slippery HC, the central tendency of four K-SMoS could be shifted toward zero by 23% up to 99%. This shifting is associated with a significant safety enhancement that potentially can reduce the likelihood of curve-related crashes on slippery HCs. It was revealed that the variation in drivers’ behavior on the slippery HC could be minimized in the CV environment, where 54% up to 95% reduction in the dispersions of four K-SMoS were observed, leading to more certainty in drivers’ behavior.  相似文献   
183.
ObjectivesWe aimed to develop a concise psychometric scale to assess athletes’ in-competition emotions, which would reduce the practical and conceptual limitations of previous measures.DesignFour studies were designed to develop and assess the validity of the new Brief In-Competition Emotion (BICE) scale.MethodIn Study 1, the content validity of 39 emotion adjectives was investigated using expert analysis, 9 adjectives were subsequently removed. In Study 2, 402 university athletes used the remaining 30 adjectives to record their in-competition emotions and confirmatory factor analyses and a reliability removal method was used to create the 10-item BICE scale. Study 3 (N = 109) and Study 4 (N = 74) consisted of both concurrent and predictive validity assessments of the BICE scale.ResultsConstruct validity, reliability and confirmatory factor analyses completed during Study 1 and Study 2 resulted in the development of the 10-item BICE scale, consisting of five composite emotion factors: anger, anxiety, excitement, dejection and happiness. The findings from Study 3 and Study 4 showed that the BICE scale presented acceptable levels of concurrent and predictive validity.ConclusionsThe BICE scale is a rigorously developed parsimonious scale which offers researchers new opportunities for investigation and provides applied practitioners with a new method of evaluating in-competition intervention efficacies.  相似文献   
184.
This paper presents the concerns of a client diagnosed with autism spectrum disorder about completing outcome measures. He was asked to complete CORE‐10 each time he attended a therapy session with the first author. This paper takes an epistemological position of co‐production, and written in response to the client's concerns, but this is limited by the client's wish and capacity to be involved in the writing up of this article. Implications of his experiences are drawn out for both clients with this diagnosis and more generally for all clients. Recommendations are made to recognise the limitations of measures and how to use outcome measures with more validity.  相似文献   
185.
With reports continually demonstrating increased demand and severity of student mental health needs, it is important to gain a fuller understanding of the impact on embedded student counselling services. The aims of this research were to identify (a) service similarities, (b) factors which impact on services, (c) characteristics of service users, and (d) the use of therapeutic technology (e.g. online self-help). An online survey was completed by 113 heads of UK student counselling services across Higher Education (HE), Further Education (FE), and Sixth Form Colleges (SFCs), to capture service data from the academic year 2013/14. Students predominantly received high-intensity support (e.g. counselling) and referrals increased over 3 years. Challenges to embedded counselling services and their implications for development are discussed.  相似文献   
186.
The aim of this study was to examine how the widespread use of telework during the COVID-19 pandemic may have created a specific work context influencing employees’ psychological health and performance. Results of analyses conducted on a sample of 3771 Canadian teleworkers revealed that telework created additional demands such as task interdependence and professional isolation. These demands had negative effects on telework performance by increasing the frequency of perceived stress. However, the presence of resources such as organizational support appeared to play a buffering role in moderating the direct effect of professional isolation on telecommuting performance.  相似文献   
187.
When evaluating one’s own or others’ performances, there is a strong tendency to rely on social comparison information. Remarkably, however, the extant achievement goal research suggests that the prevalence of other-based goals is very low, also in sport contexts. In the present research, we argue and demonstrate that in the context of a sports match: (1) most athletes’ overarching achievement goal is an other-based approach goal (i.e., the goal to win), and (2) athletes with an overarching other-based approach goal also rely on self-based criteria (referring to one’s personal performance trajectory) and task-based criteria (referring to the absolute demands of the task). Survey data was collected among 647 competitive korfball players (69.4% women), ranging in age from 16 to 56 years. As expected, for most athletes (51.6%), to win matches was their overarching achievement goal, and pursuing self-based and task-based approach goals added to their competence satisfaction. In such a hierarchical achievement goal system, subordinate goals likely help athletes to increase their awareness of what actions and means facilitate their focal objective: Coming out victorious.  相似文献   
188.
This systematic review explored the under-researched experience of performance slumps in sport with four objectives: (i) review definitions of a performance slump; (ii) identify known causes of a performance slump; (iii) identify the symptoms athletes present when in a performance slump; and (iv) review approaches used to combat a slump in performance. Literature searches into three databases (PsychARTICLES, PsychINFO and SPORTDiscus) resulted in the inclusion of quantitative (n = 14) and qualitative (n = 4) empirical research studies. The findings were thematically analysed and narratively synthesised. Results showed that: (i) definitions of a performance slump vary; (ii) perceived expectations for success and athletes attributing poor performance to something about themselves have been empirically verified as performance slump causes; (iii) during a slump, athletes might display a range of emotional and psychological symptoms and/or adopt skill-focused attention; and (iv) athletes reported several ways of coping with a performance slump, and research has offered succeeding under pressure as a potential route out of a slump. This systematic review highlights the need for an empirical investigation of the performance slump phenomenon. Future studies should be directed towards understanding the prominent symptoms athletes experience during the slump, so that cause, context, competitor and symptomatic dependant intervention strategies can be designed.  相似文献   
189.
Sleep is fundamental to sports performance and other health outcomes such as mental wellbeing. This systematic review explored the effects of sleep interventions implemented among athletes on performance, sleep, and mood outcomes. Five databases were searched, returning 5996 records for screening. Of these, 27 articles met the inclusion criteria (16 controlled deigns, 11 uncontrolled; athletes n = 617; male n = 432, female n = 93, non-binary/other n = 0 or not reported n = 92). Narrative synthesis of all studies based on intervention type suggested that sleep hygiene, assisted sleep, and sleep extension interventions may be associated with improved sleep, performance, and mood outcomes. Twelve controlled trials were eligible for quantitative meta-analysis, investigating the effect of sleep interventions on athlete sleep, performance, and negative affect, compared to controls post-intervention. Utilizing random-effects meta-analyses, sleep interventions improved subjective sleep quality (g = 0.62, 95% CI [0.21, 1.02]), reduced sleepiness (g = 0.81, 95% CI [0.32, 1.30]) and decreased negative affect (g = 0.63, 95% CI [0.27, 0.98]), but did not appear to influence subjective sleep duration. No effects were identified for objective sleep measures (e.g., actigraphy), or aerobic/anaerobic performance indices. While sleep interventions may offer some benefit to athletes, caution is warranted given limitations of the extant research relating to small, non-representative studies with methodological concerns.  相似文献   
190.
It was hypothesized that, in natural group contexts, low‐status in‐group membership would be highly accessible, whereas membership to high‐status groups would not. Therefore, gender group membership was predicted to be more accessible for women than for men. It was further hypothesized that the high accessibility of gender group membership would lead to stronger self‐stereotyping for women than for men. To measure the accessibility of gender group membership, participants performed a Gender Self‐Categorization Implicit Association Test (Studies 1 and 2), measuring the strength of automatic associations between the self and the gender in‐group. Participants also performed a Self‐Stereotyping Implicit Association Test (Study 2), assessing the strength of automatic associations between the self and the stereotypical traits of the in‐group. As expected, implicit gender self‐categorization and implicit gender self‐stereotyping were stronger for women than for men. Importantly, implicit gender self‐categorization mediated the relation between gender and self‐stereotyping. Therefore, implicit gender self‐categorization was the mechanism underlying stronger implicit self‐stereotyping by women. Copyright © 2012 John Wiley & Sons, Ltd.  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