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   905篇
  免费   167篇
  国内免费   120篇
  1192篇
  2024年   5篇
  2023年   43篇
  2022年   66篇
  2021年   65篇
  2020年   96篇
  2019年   49篇
  2018年   86篇
  2017年   90篇
  2016年   96篇
  2015年   42篇
  2014年   61篇
  2013年   127篇
  2012年   34篇
  2011年   32篇
  2010年   14篇
  2009年   16篇
  2008年   19篇
  2007年   20篇
  2006年   35篇
  2005年   30篇
  2004年   36篇
  2003年   13篇
  2002年   12篇
  2001年   15篇
  2000年   9篇
  1999年   11篇
  1998年   5篇
  1997年   4篇
  1996年   2篇
  1995年   4篇
  1994年   2篇
  1993年   2篇
  1992年   6篇
  1991年   4篇
  1990年   3篇
  1989年   2篇
  1988年   7篇
  1987年   2篇
  1986年   3篇
  1985年   7篇
  1984年   3篇
  1983年   3篇
  1982年   2篇
  1981年   4篇
  1980年   3篇
  1978年   1篇
  1976年   1篇
排序方式: 共有1192条查询结果,搜索用时 9 毫秒
871.
Workplace bullying is a severe workplace stressor that affects both employees and organizations. Despite a wealth of research of the prevalence of workplace bullying and its correlates, little research has been done on the process of bullying. In a qualitative study, based on the grounded theory approach, we examine the role of psychosocial safety climate (PSC) in influencing employees’ coping strategies and ultimately the escalation of bullying. Interviews were conducted with 20 Malaysian workers from various organizational settings, who also completed a 12-item PSC scale. The analysis revealed that coping strategies took the form of a modified exit-voice-loyalty-neglect (EVLN) model, whereby acquiescence replaced loyalty in the matrix. In turn, five escalation patterns of bullying were identified, linked to the coping options used by employees. We found that employees tended to voice in high PSC contexts, which led to swift resolution of bullying. In low PSC contexts, employees tended to neglect or acquiesce before exiting the organization because the bullying remained unresolved, which was revealed in four different trajectories of escalation without resolution. These results emphasize the influence of the organizational climate for psychosocial safety in shaping the coping options available to bullied workers, and the likely success of these strategies.  相似文献   
872.
This paper analysed the relation of girlfriend’s effect (GFE) with perceived stress (PS), and also considered Islamic religious values (RVs) as a moderating variable. The selection technique used was convenience sampling that helped the investigation to select 90 respondents who filled self-report measures about various constructs. Linear regression was employed to test different conceptual linkages material to this work. The results show that there is no significant relation present between RVs and PS. Moderating hypothesis was also rejected. However, GFE predicted notable degree of PS in the sample. Limitations and future directions are also discussed.  相似文献   
873.
ObjectiveThere is very little information available about the characteristics of drivers convicted for traffic offences. The objective of this study was to perform a comparative analysis of the psychosocial characteristics of Spanish prison inmates convicted of road traffic offences (CRTOs), drivers serving a prison sentence for other types of offence (DCOOs), and drivers with no criminal record (DNCRs), in order to identify the psychosocial predictors associated with RTOs.MethodsThe study sample comprised 434 male participants divided into three groups: CRTO (n = 240); DCOO (n = 85); and DNCR (n = 105). Instruments included an interview on sociodemographic data, driving behaviour, and past offences, as well as a set of tests to evaluate personality traits (ZKPQ-50CC), driving-related aspects (MDSI-S and DAS), and alcohol dependence (AUDIT).ResultsA logistic regression analysis showed the following to be reliable predictors of RTOs: low education level (p < .05); having been involved in several road traffic accidents (p < .001); having received several fines (p < .001); a high score on the MDSI-S Risky subscale (p < .05); a low score on the MDSI-S Careful subscale (p < .05); AUDIT scores > 8 (p < .05), and repeatedly driving whilst under the influence of alcohol (p < .05).ConclusionsThe results obtained have significant practical implications for designing and implementing traffic offenders programmes.  相似文献   
874.
Behavior of right turning vehicles in the context of safety is characterized by their use of turning indicators and compliance with the stop rule. They are influence by the width of the carriageway and the variation in volume on the major road with respect to the traffic moving in the near and far side direction. Other factors affecting the behavior are the speed and spacing between vehicles moving on the major road. Lack of adequate past knowledge on the effect of geometric variation in terms of road width and directional variation in volume on the safety of unsignalized intersections have provided the motivation for this study. This paper focuses on the many factors that affect the behavior of right-turning vehicles resulting into conflicts. A brief account of the unique indigenous maneuver termed as the “Weaving Merging Right Turn” (WMRT) is provided and its effectiveness with respect to conventional right turn is evaluated. Data of 39,016 vehicles collected on 10 sites between January and June 2014 was analyzed. Multiple accidents were observed only on sites which had near side traffic volume greater than far side traffic volume. This result remains consistent with sites having single as well as multiple lanes per direction on the major roads. The number of conflicts for vehicles performing the WMRT was 2.5 times less as compared to the conventional right turn. Moreover WMRT was found to be the maneuver of choice for right turning motorcyclists with 60% of them opting for it over the conventional right turn on intersections having major road width less than 9 m. None of the motorcyclists, which were involved in a traffic conflict, were observed to use their turning indicator. Moreover none of the motorcyclists, which experienced a traffic conflict, were found to comply with the stopping rule at sites with major road width less than 9 m. On sites with major road width greater than 9 m, 45% of motorcyclists, involved in a traffic conflict, complied with the stopping rule as compared to 79% by vehicles other than motorcycles.  相似文献   
875.
In Europe, the use of electric bicycles is rapidly increasing. This trend raises important safety concerns: Is their use compatible with existing infrastructure and regulations? Do they present novel safety issues? How do they impact other traffic? This study sought to address these concerns, using instrumented electric bicycles to monitor e-cyclists’ behavior in a naturalistic fashion. Data was collected from 12 bicyclists, each of whom rode an instrumented bicycle for two weeks. In total, 1500 km worth of data were collected, including 88 critical events (crashes and near-crashes). Analysis of these critical events identified pedestrians, light vehicles and other bicycles as main threats to a safe ride. Other factors also contributed to crash causation, such as being in proximity to a crossing or encountering a vehicle parked in the bicycle lane. A comparison between electric and traditional bicycles was enabled by the availability of data from a previous study a year earlier, which collected naturalistic cycling data from traditional bicycles using the same instrumentation as in this study. Electric bicycles were found to be ridden faster, on average, than traditional bicycles, in addition to interacting differently with other road users. The results presented in this study also suggest that countermeasures to bicycle crashes should be different for electric and traditional bicycles. Finally, increasing electric bicycle conspicuity appears to be the easiest, most obvious way to increase their safety.  相似文献   
876.
In some Chinese cities, traffic wardens are employed to maintain traffic order at the intersections with a high mixed traffic flow in peak hours. The main work of a traffic warden is to advise pedestrians and riders to wait at the appropriate area during red light periods. In many other countries, there are also traffic wardens at the areas with dense crowds or vehicles, such as at some large parking lots near parks and shopping malls. This paper investigated the effects of traffic wardens on the crossing behavior of pedestrians, cyclists and electric bike riders at signalized intersections. A total of 795 samples with traffic wardens and 773 samples without traffic wardens at intersections in Beijing, China were observed. Logistic regression and multivariate analysis of variance were used to test the effect of traffic wardens on the red-light crossing behavior. The results indicated that the presence of traffic wardens would significantly reduce by 21% red-light infringement behavior of vulnerable road users. However, the effects of traffic wardens were different among different groups. The effect of traffic wardens on reducing the violation rate for pedestrians was smaller compared to cyclists and electric bike riders (8% vs. 23% and 27%, respectively). The effect of traffic wardens was significant for the individuals approaching straight ahead the intersection, while it was not significant for the individuals approaching from the left and right sides of the observed direction. The possible reasons for the different effects and some practical countermeasures to reduce red light infringement were discussed. This study provides insights into the effects of traffic wardens on enhancing the safety of vulnerable road users under mixed traffic conditions. It is useful for the administrators to evaluate the supervision performance of traffic wardens and make informed decisions to employ traffic wardens at locations with dense crowds or vehicles.  相似文献   
877.
Among different types of crashes, hit-and-run is driver’s failure to stop after a vehicle crash. There are many accidents where drivers could actually be at fault or totally innocent, and leaving the scene would turn an innocent driver into a criminal. The current paper aims to contribute to the literature by exploring the association of different variables pertaining to the condition of infrastructure, environment, driver, population of the area, and crash severity and type with hit-and-run crashes. The analysis is performed for two data sets: (i) crashes where the driver was distracted; and (ii) crashes where driver was not distracted. Hit-and-run crash data with corresponding factors are police-reported data for crashes within Cook County, Illinois, occurring between 2004 and 2012. A logistic regression model assessed 43 variables within 16 categories for statistically significant association with hit-and-run crashes, for drivers with and without distraction. For both driver distraction statuses, 17 variables were associated with a significant increased probability of a hit-and-run crash and 10 variables were associated with a significant decreased probability. Additionally, it was found that crashes on curve level and curve hillcrest road alignment types were associated with increased likelihood of a hit-and-run crash when the driver was distracted and decreased likelihood when the driver was not distracted. Variables related to hit-and-run crashes vary depending on driver’s distraction status. When comparing likelihood to flee the scene after a crash, non-distracted drivers are 27% less likely to do so compared to distracted drivers.  相似文献   
878.
Research shows that driver factors, particularly driver distraction, are the most common cause of traffic accidents. Among various visual distractions, objects such as advertisements that are commonly prevailing elements at the roadside, represent an important external distractor that may affect driving performance. Research findings on the influence that roadside signs or advertisements have on driver’s attention focus are not consistent. Therefore, with the application of eye-tracking technology, this research was designed to test several assumptions regarding drivers’ detection and perception of roadside elements. Seventeen volunteer participants, 19–76 years old, performed ten kilometres of urban driving, in which they were visually challenged with 56 traffic signs and 31 advertisements. It was found that drivers’ age is not associated with the number of roadside objects detected. Those drivers who detected more traffic signs were also more attentive to visual advertisements. Furthermore, a positive and large effect size between the number of detected street-level and raised-level advertisements was also found.  相似文献   
879.
This study investigated the impact of the festival experience (sensory, cognitive, and behavioural) on the perceived value and loyalty of tourists. The participants were 450 tourists (51.1% domestic; 48.9% international) who attended the 2015 South Korean World Culture festival. Of the international tourists, 44.6% were African (Africans living in Europe and the Americas are partly included). The domestic tourists received a questionnaire in Korean, while the foreign tourists received a questionnaire in English. A regression analysis was used to predict the effect of the festival experience on the tourists’ perceived value and loyalty. Findings suggest that behavioural factors most influenced the perceived value and loyalty of domestic tourists. Cognitive and sensory factors most influenced international and African tourists’ perceptions of value. In addition, the loyalty of African tourists was most influenced by the sensory aspects of the festival.  相似文献   
880.
The goal of this study was to analyze the relationships between self-esteem, perceived stress, the quality of different types of interpersonal relationships, and gender in adolescents. This study used a sample of 1614 adolescent high school students and robust data analytic techniques to test the proposed relationships. The results partially supported the initial hypothesis in that perceived stress mediated the relationships between self-esteem and four of the types of interpersonal relationships (i.e., same-sex peer relationships, opposite-sex peer relationships, parent–child relationships, and teacher–student relationships) and moderated the relationship between self-esteem and same-sex peer relationships. In addition, a moderated role of gender was also partially supported in that perceived stress mediated the relationships between self-esteem and same-sex peer relationships, opposite-sex peer relationships, and the parent–child relationship for girls, but not boys. On the basis of these findings, it was concluded that perceived stress plays an intervening role in the relationship between self-esteem and different types of interpersonal relationships and that gender seems to be a moderator for some of the patterns of the relationships between these variables. These findings are discussed in light of the possible mechanisms by which the variables could influence each other. Implications for theory and practice as well as some directions for future research were also suggested.  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