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   671篇
  免费   53篇
  国内免费   35篇
  2024年   4篇
  2023年   13篇
  2022年   50篇
  2021年   38篇
  2020年   61篇
  2019年   19篇
  2018年   53篇
  2017年   47篇
  2016年   41篇
  2015年   37篇
  2014年   40篇
  2013年   73篇
  2012年   9篇
  2011年   28篇
  2010年   13篇
  2009年   27篇
  2008年   39篇
  2007年   17篇
  2006年   23篇
  2005年   17篇
  2004年   25篇
  2003年   8篇
  2002年   5篇
  2001年   8篇
  2000年   2篇
  1999年   3篇
  1998年   1篇
  1997年   4篇
  1996年   1篇
  1995年   3篇
  1994年   1篇
  1993年   1篇
  1992年   7篇
  1991年   4篇
  1990年   3篇
  1989年   2篇
  1988年   8篇
  1987年   2篇
  1986年   3篇
  1985年   3篇
  1984年   3篇
  1983年   3篇
  1982年   1篇
  1981年   4篇
  1980年   3篇
  1978年   1篇
  1976年   1篇
排序方式: 共有759条查询结果,搜索用时 15 毫秒
61.
This paper investigates frightening situations women face in their everyday mobility. The focus is not on serious criminal offences but rather on all situations causing fear such as harassment and the influence on the travel behaviour of women. Two surveys were conducted in Austria in 2012 and 2013 to assess whether and how many women are affected and to get insights in locations of the incidents and the circumstances. The personal security aspects of different modes of transport are investigated. The results show that women who experienced frightening situations tend to avoid certain destinations or routes and travel modes more than other women. The results also confirm that women in general have constrained travel behaviour because of fear about their personal security. When it is impossible to change route or travel time e.g. due to personal restraints, or when simply no other transport mode is available, women are captives to use unwanted transport options, even when they have to reckon with frightening situations. The conclusions summarize that women’s personal security plays an important role in terms of travel behaviour and increased attention should be paid by authorities as well as city- and transport planners striving for sustainable built environments. As the share of affected women is high and it can be assumed that women are more often imperilled than men the questions arises, if this can be assimilated to unequal mobility opportunities, finally resulting in a social deficiency for women.  相似文献   
62.
Pedelecs (e-bikes), which facilitate higher speeds with less effort in comparison to traditional bicycles (t-bikes), have grown considerably in popularity in recent years. Despite the large expansion of this new transportation mode, little is known about the behavior of e-cyclists, or whether cycling an e-bike increases crash risk and the likelihood of conflicts with other road users, compared to cycling on t-bikes. In order to support the design of safety measures and to maximize the benefits of e-bike use, it is critical to investigate the real-world behavior of riders as a result of switching from t-bikes to e-bikes.Naturalistic studies provide an unequaled method for investigating rider cycling behavior and bicycle kinematics in the real world in which the cyclist regularly experiences traffic conflicts and may need to perform avoidance maneuvers, such as hard braking, to avoid crashing. In this paper we investigate cycling kinematics and braking events from naturalistic data to determine the extent to which cyclist behavior changes as a result of transferring from t-bikes to e-bikes, and whether such change influences cycling safety.Data from the BikeSAFE and E-bikeSAFE naturalistic studies were used in this investigation to evaluate possible changes in the behavior of six cyclists riding t-bikes in the first study and e-bikes in the second one. Individual cyclists’ kinematics were compared between bicycle types. In addition, a total of 5092 braking events were automatically extracted after identification of dynamic triggers. The 286 harshest braking events (136 cases for t-bike and 150 for e-bike) were then validated and coded via video inspection.Results revealed that each of the cyclists rode faster on the e-bike than on the t-bike, increasing his/her average speed by 2.9–5.0 km/h. Riding an e-bike also increased the probability to unexpectedly have to brake hard (odds ratio = 1.72). In addition, the risk of confronting abrupt braking and sharp deceleration were higher when riding an e-bike than when riding a t-bike.Our findings provide evidence that cyclists’ behavior and the way cyclists interact with other road users change when cyclists switch from t-bikes to e-bikes. Because of the higher velocity, when on e-bikes, cyclists appear to have harder time predicting movements within the traffic environment and, as a result, they need to brake abruptly more often to avoid collisions, compared with cycling on t-bikes. This study provides new insights into the potential impact on safety that a cycling society moving to e-bikes may have, indicating that e-cycling requires more reactive maneuvers than does cycling traditional bicycles and suggesting that any distractive activity may be more critical when riding e-bikes compared to traditional bikes.  相似文献   
63.
Rural roads are characterized by a high percentage of run-off-the-road accidents and head-on collisions, mainly caused by inappropriate speeds and failure to maintain a proper lateral position along the roadway alignment. Among several road safety treatments, low-cost perceptual measures are considered an effective tool, as they generally increase the risk perceived by drivers, or even alter the drivers’ speed perception, and consequently tempting them to decrease their speeds. Their effectiveness has been widely recognized in a number of studies, especially with respect to road intersections and curves.The overall aim of this study is to investigate the effects of different perceptual treatments on driving speed, along a crest vertical curve of an existing two-lane rural road, in order to identify the most effective measure to reduce speed and define its subsequent implementation in the field. Three perceptual treatments were tested using a driving simulator: white peripheral transverse bars, red peripheral transverse bars and optical speed bars, with each one being painted along the approaching tangent to the crest vertical curve. The effects of these speed-reducing measures were investigated using a sample of forty-four participants, by comparing the driving speeds with those recorded under a baseline condition (without a treatment); these were also used to validate the driving simulator’s speed measurements with those found in the field. Moreover, subjective measures were collected, consisting of the driver’s static evaluation of the desired speed, risk perception and markings comprehension, based on screen shot pictures that represented the simulated configurations of the treatments.The findings demonstrated an overall effectiveness of the perceptual treatments, although only the red peripheral transverse bars were found to significantly reduce the driving speeds (−6 km/h). The analysis of the questionnaire yielded interesting information and demonstrated the importance of performing driving simulation tests for evaluating the effectiveness of perceptual treatments.Finally, the results confirmed the enormous potential of using driving simulators to pinpoint a number of speed-reducing measures, and consequently select the most effective one that reduces cost and promotes safety before its actual implementation in the field.  相似文献   
64.
Prior to 2000, personal practice (PP) for therapists mostly meant personal therapy. Recently a new landscape of PPs has emerged, with meditation-based programs and therapy self-practice/self-reflection (SP/SR) programs playing an increasing role in training and personal/professional development. The challenge now for practitioners and researchers is to refocus on the role of PPs in training and professional development. Are PPs of value - or not? Do they have a role in therapist development? How might PPs enhance therapist skilfulness? Do different PPs act in similar or different ways? Currently, the PP literature lacks a theoretical framework to guide practitioners in their choice of PPs or researchers in their choice of research questions and measures. The purpose of this article is to provide such a framework, the Personal Practice (PP) model. The PP model proposes primary impacts of PPs in four domains: personal development/wellbeing, self-awareness, interpersonal beliefs/attitudes/skills and reflective skills. The model also suggests a secondary impact on therapists’ conceptual/technical skills when therapists use reflection to consider the implications of their PP for their “therapist self”. We offer some suggestions to enhance the quality of future research, and conclude that PPs may play an important and perhaps unique role in therapist training.  相似文献   
65.
Background: Athletic burnout is common when demands of the sport exceed the rewards. Individuals with certain personality dispositions, such as perfectionism, are at increased risk of experiencing perceived stress and subsequent burnout (Fender, L. K. (1989). Athlete burnout: Potential for research and intervention strategies. The Sport Psychologist, 3, 63–71. doi:10.1123/tsp.3.1.63; Gould, D., Tuffey, S., Udry, E., &; Loehr, J. (1996). Burnout in competitive junior tennis players: I. A quantitative psychological assessment. The Sport Psychologist, 10, 322–340. doi:10.1123/tsp.10.4.322; Stoeber, J. (2011). The dual nature of perfectionism in sports: Relationships with emotion, motivation, and performance. International Review of Sport and Exercise Psychology, 4, 128–145. doi:10.1080/1750984x.2011.604789). Perfectionism has both adaptive and maladaptive dimensions, with the more maladaptive qualities leading to greater perceived stress (Hamachek, D. E. (1978). Psychodynamics of normal and neurotic perfectionism. Psychology, 15, 27–33.; Rice, K. G., &; Van Arsdale, A. C. (2010). Perfectionism, perceived stress, drinking to cope, and alcohol-related problems among college students. Journal of Counseling Psychology, 57, 439–450. doi:10.1037/a0020221).

Objectives: This study examined the influence of perfectionistic strivings and concerns on burnout, and perceived stress as a mediator of this relationship in Division II and III specialized and multiple-sport athletes (N?=?351).

Design: Cross-Sectional.

Methods: Participants completed a demographic questionnaire and online measures of perfectionism, stress, and burnout during the latter part of the competitive season.

Results: Results showed a positive, direct effect of perfectionistic concerns on burnout. Stress partially mediated this relationship. Additionally, perfectionistic strivings had a negative direct effect on burnout for specialized athletes.

Conclusion: The relationship between perfectionistic concerns and burnout is partially explained by stress. Multiple sport athletes showed lower levels of stress compared to specialized ones. Finally, perfectionistic strivings are associated with lower levels of burnout for specialized athletes.  相似文献   
66.
Safety behavior is involved in the maintenance of anxiety disorders, presumably because it prevents the violation of negative expectancies. Recent research showed that safety behavior is resistant to fear extinction. This fear conditioning study investigated whether safety behavior after fear extinction triggers a return of fear in healthy participants. Participants learned that two stimuli (A and C) were followed by an aversive loud noise (“threat”), and one stimulus (B) was not. Participants then learned to use safety behavior that prevented the loud noise. Next, A and C were no longer followed by the loud noise, which typically led to extinction of threat expectancy. Safety behavior then became available again for C, but not for A and B. All participants used safety behavior on these C trials. In a final test phase, A, B, and C were presented once without the availability to use safety behavior. At each stimulus presentation, participants rated threat expectancy by indicating to what extent they expected that the loud noise would follow. Compared with the last extinction trial, threat expectancy increased for C in the test phase, whereas it did not increase for A and B. Hence, safety behavior after the extinction of classically conditioned fear caused a partial return of fear. The findings suggest that safety behavior may be involved in relapse after exposure-based therapy for anxiety disorders.  相似文献   
67.
Across two studies, we find evidence for our prediction that experimentally increasing feelings of physical safety increases conservatives' socially progressive attitudes. Specifically, Republican and conservative participants who imagined being endowed with a superpower that made them invulnerable to physical harm (vs. the ability to fly) were more socially (but not economically) liberal (Study 1) and less resistant to social change (Study 2). Results suggest that socially (but not economically) conservative attitudes are driven, at least in part, by needs for safety and security.  相似文献   
68.
Personal goals play a leading role in directing behavior and influencing well-being. Thus, it is important to assess goal dimensions promoting effective goal pursuit. The current research aimed at identifying the best predictors of goal pursuit, operationalized as perceived goal progress, among goal-related variables and individual differences in dispositional optimism. Two studies examined the influence of optimism on goal progress, commitment, expectancy, value, and conflict. Moreover, the mediation effect of expectancy in the relationships among optimism, commitment and progress was assessed.Participants in the first cross-sectional study were 283 young people (19–32 years old), whereas participants in the second longitudinal study were 409 people (19–71 years old). They reported their most important personal goals and rated each of them with respect to goal progress, conflict, expectancy, commitment, and value. Dispositional optimism was also assessed.In both studies, multilevel and mediational analyses demonstrated the fostering role of optimism on perceived goal progress and commitment through the mediation of goal expectancy. Thus, optimists are more likely than pessimists to report more perceived progress in their pursued personal goals. By clarifying the role of optimism in fostering goal progress and commitment, this research provides insight on how effective goal pursuit could be promoted.  相似文献   
69.
Remindings are spontaneously arising recollections of past personal experiences that are instrumental in that they occur in response to an ongoing task to which they are perceived as being related. While related areas of research have found the number of off-task thoughts to decrease with the difficulty of the on-going task, task difficulty has yet to be examined in remindings. Here we present a series of studies examining the effects of task difficulty on remindings as well as further examining the phenomenological characteristics of remindings. Experiments 1–3 provide evidence that the frequency of remindings during different types of reading and writing task decreases with increasing difficulty associated with the parallel task. Experiment 4 shows that the content of remindings varies systematically with characteristics of the parallel task, indicating their context dependency and potential instrumentality. Findings are discussed in relation to research on mind wandering and involuntary autobiographical memories.  相似文献   
70.
The article is a response to this journal's call for papers on metaphors for teaching, and also draws from a previous publication in which Kent Eilers developed a methodology for teaching global theologies. In this methodology, the ultimate goal was the development of “hermeneutical dispositions of empathy, hospitality, and receptivity toward culturally diverse voices” (2014, 165). This article considers the goals of Eilers' methodology, and others like his, and how it is that the metaphors of “leaving home” and “communal imagination” highlight the importance of the ambient and interpersonal features of a classroom and their effect on the attainment of the above goals. In so doing, it extends the conversation beyond content and methodology in teaching theology and religion into the realms of philosophy of education, as well as the fields of moral and values education. It is contended that the metaphors informed by these areas of study facilitate the attainment of such goals, and similar ones, by demonstrating that the cultivation of an ambience of care, trust, and compassion within the classroom constitutes an essential foundation for learning in which students “leave home” and cultivate “communal imagination.” The article finishes with practical suggestions for educators in theology and religion.  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