全文获取类型
收费全文 | 629篇 |
免费 | 32篇 |
国内免费 | 7篇 |
出版年
2023年 | 19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 | 39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668条查询结果,搜索用时 31 毫秒
501.
Results of two studies indicated that tasting a familiar product designed to be refreshing (iced tea), without knowledge of the brand, induced positive affect, as did the gift-of-candy (not consumed) induction, used in many previous studies. As compared to controls, these participants showed more positive affect as reflected by 5 implicit measures and 2~explicit ratings of the refreshingness and pleasingness of the product. They performed significantly better on items from the Remote Associates Test (a test of creativity), generated more unusual and more pleasant first associates to a randomly selected letter of the alphabet, and to neutral words (the implicit measures). Results also indicated that similar affect did not arise when participants tasted a less liked, unfamiliar, brand of iced tea, without knowledge of the brand. However, when the brand name (a known brand) of that tea was presented with the less liked product sample, people who tasted that same tea showed positive affect responses on the implicit measures of affect and also explicitly rated the tea as more refreshing and pleasing than the unbranded version of the same tea. 相似文献
502.
工业革命以来,伴随现代化进程,人类的内外环境和社会生活均已发生巨变.当代中医病因学和治疗学应及时研究全球气候的非周期性变化、城市环境致病因子等新要素,应该对心理因素、工作环境、生活方式致病作用的凸现作出相应的反应.即,对传统中医学的"三因制宜"体系应进行现代整合,以促进其辨证施治优势与时俱进. 相似文献
503.
以中国样本为例,运用元分析方法对个体和团队层面情绪智力与工作相关变量的关系进行了探讨。来源于46项研究的59个独立样本满足了元分析标准(N=11578)。元分析结果发现,个体情绪智力与领导行为有高度正相关,与任务绩效、背景绩效、自我效能感有中高度正相关,与工作满意、组织承诺、创新行为有中低度正相关,与工作倦怠有中高度负相关,与工作压力有中低度负相关,与员工离职和凝聚力的相关不显著。团队情绪智力与团队绩效高度正相关。结果表明,情绪智力是工作场所有价值的变量,它对有效的工作变量有不同程度的预测性。 相似文献
504.
时间应激对不同结构超文本信息搜索绩效的影响 总被引:1,自引:0,他引:1
实验探讨了时间应激对不同结构超文本信息搜索绩效的影响效应。采用 3× 2被试间设计 ,自变量为超文本结构 (层次、混合、网状 )和时间应激(应激组和对照组 ) ,因变量为答题速度和迷路指数。 48名大学生或研究生被试参与实验。结果发现 ,时间应激对超文本搜索绩效有重要影响。更具体地说 ,时间应激对网状结构超文本搜索绩效的影响尤为明显。因此 ,在需对用户浏览时间进行控制的情况下 ,最好不要采用网状结构的超文本设计。另外 ,超文本结构对超文本搜索绩效的影响效应再次得到证实。 相似文献
505.
Todd A. Merritt Florence D. DiGennaro Reed Cynthia E. Martinez 《Journal of applied behavior analysis》2019,52(4):1034-1048
We assessed and reduced the tardiness of 4 direct‐care staff employed at a school that provides educational services to children with autism. The Performance Diagnostic Checklist – Human Services was administered to participants and their supervisors to identify one or more indicated interventions. Relative to baseline, tardiness was lower during intervention. The most effective intervention included task clarification, a problem‐solving discussion, tokens exchangeable for back‐up reinforcers, and weekly graphic feedback. Moreover, participants reported that the intervention components, particularly praise and a token, had high acceptability. 相似文献
506.
BackgroundWe have previously shown that objective measurements of postural sway predicts fall risk, although it is currently unknown how limits of stability (LOS) might influence these results.Research question: How integrated postural sway and LOS measurements predict the risk of incident falls in a population-based sample of older adults.Methods:The sample for this prospective observational study was drawn from the Healthy Ageing Initiative cohort and included data collected between June 2012 and December 2016 for 2396 men and women, all 70 years of age. LOS was compared to postural sway with measurements during eyes-open (EO) and eyes-closed (EC) trials, using the previously validated Wii Force Plate. Fall history was assessed during baseline examination and incident falls were collected during follow-up at 6 and 12 months. Independent predictors of incident falls and additional covariates were investigated using multiple logistic regression models.Results:During follow-up, 337 out of 2396 participants (14%) had experienced a fall. Unadjusted regression models from the EO trial revealed increased fall risk by 6% (OR 1.06, 95% CI 1.02–1.11) per each centimeter squared increase in sway area and by 16% (OR 1.16, 95% CI 1.07–1.25) per 1-unit increase in Sway-Area-to-LOS ratio. Odds ratios were generally lower when analyzing EC trials and only slightly attenuated in fully adjusted models.Significance:Integrating postural sway and LOS parameters provides valid fall risk prediction and a holistic analysis of postural stability. Future work should establish normative values and evaluate clinical utility of these measures. 相似文献
507.
The use of unstable surfaces during resistance training has demonstrated a maintenance or reduction on force production. However, the use of unstable surface on force variability has not been assessed using non-linear methods that may be better suited to detect changes in movement variability throughout a given movement. Consequently, this study compared the use of stable vs unstable surfaces on force variability during bilateral squats performed with an inertial flywheel device (Eccoteck, Byomedic System SCP, Spain). Twenty healthy men (mean ± SD: age 22.9 ± 2.9 years, height 1.81 ± 0.7 m, body mass 76.4 ± 7.6 kg and 1RM back squat 110.9 ± 19.7 kg) with a minimum of four years in resistance training performed six sets of six repetitions of squats at maximal concentric effort with one minute rest between sets. Force output on the vertical axes was measured using a strain gauge and the results were processed using non-linear sample entropy (SampEn). Results showed no differences for any of the dependent variables between stable and unstable conditions. SampEn showed no differences between conditions (chi-squared = 0.048 P = 0.827), while Forcemean and SampEn presented a small correlation (r = 0.184; p < 0.01). No changes in entropy were found over the course of the series. Together, these results suggest that the structure of force variability between stable and unstable surfaces are similar. This lack of difference between surfaces may be due to postural and anticipatory adjustments. Consequently, by introducing unstable surfaces to the flywheel bilateral squat exercise, practitioners may not observe changes in Forcemean and force variability when compared to stable surface training suggesting that increased training volumes or intensity may be required during unstable environments to cause a desired training stimulus. 相似文献
508.
Motor abundance allows reliability of motor performance despite its variability. The nature of this variability provides important information on the flexibility of control strategies. This feature of control may be affected by low back pain (LPB) and trunk flexion/extension conditions.Goal equivalent manifold (GEM) analysis was used to quantify the ability to exploit motor abundance during repeated trunk flexion/extension in healthy individuals and people with chronic non-specific LBP (CNSLBP).Kinematic data were collected from 22 healthy volunteers and 22 CNSLBP patients during metronomically timed, repeated trunk flexion/extension in three conditions of symmetry, velocity, and loading; each at two levels. A goal function for the task was defined as maintaining a constant movement time at each cycle. Given the GEM, flexibility index and performance index were calculated respectively as amounts of goal-equivalent variability and the ratio of goal-equivalent to non-goal-equivalent variability.CNSLBP group was as similar as healthy individuals in both flexibility index (p = 0.41) and performance index (p = 0.24). Performance index was higher in asymmetric (p < 0.001), high velocity (p < 0.001), and loaded (p = 0.006) conditions.Performance and flexibility in using motor abundance were influenced by repeated trunk flexion/extension conditions. However, these measures were not significantly affected by CNSLBP. 相似文献
509.
The Role of Lexical Frequency in the Acceptability of Syntactic Variants: Evidence From that‐Clauses in Polish
下载免费PDF全文
![点击此处可从《Cognitive Science》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Dagmar Divjak 《Cognitive Science》2017,41(2):354-382
A number of studies report that frequency is a poor predictor of acceptability, in particular at the lower end of the frequency spectrum. Because acceptability judgments provide a substantial part of the empirical foundation of dominant linguistic traditions, understanding how acceptability relates to frequency, one of the most robust predictors of human performance, is crucial. The relation between low frequency and acceptability is investigated using corpus‐ and behavioral data on the distribution of infinitival and finite that‐complements in Polish. Polish verbs exhibit substantial subordination variation and for the majority of verbs taking an infinitival complement, the that‐complement occurs with low frequency (<0.66 ipm). These low‐frequency that‐clauses, in turn, exhibit large differences in how acceptable they are to native speakers. It is argued that acceptability judgments are based on configurations of internally structured exemplars, the acceptability of which cannot reliably be assessed until sufficient evidence about the core component has accumulated. 相似文献
510.
Perceived risk can be defined as the expectation of being involved in a traffic accident. Traffic risk perception is often subjectively evaluated being risk perception as highly individual, and depending on experiences with accidents. For this reason, a subjective measure of risk level can be useful. On the other hand, accident risk level can be measured also through objective measures, consisting in kinematic parameters defining the driving style. At this aim, it is very important to analyse instantaneous and geo-referenced travelling kinematic parameters of the vehicle recorded by real tests on the road.The aim of this paper is to identify the accident risk level of each driver based on a methodology combining both subjective and objective parameters. Specifically, by using the proposed methodology the risk can be measured immediately by using only the kinematic parameters adopted when driving; we defined three levels of risk of being involved in a road accident (low, medium, and high risk). We retain that our research can give a contribution in terms of improvement of road safety, because the distorted perception of risk level is one of the main causes of road accidents. Very often, drivers are not aware of the risk taking; therefore, it is necessary to raise the awareness of drivers to have safer driving. The proposed method can be useful for informing the driver on the level of risk he/she assumes, so that he/she can take the necessary precautions next time that will cover that stretch of road. 相似文献