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31.
为系统研究城市公交车服务质量的影响因素及作用机理,借鉴SERVPERF服务质量分析方法,从乘客感知角度设计了公交车服务质量的5维度影响因素（有形性、保证性、可靠性、响应性和关怀性）测量模型.通过相关性分析发现,可靠性维度与公交车乘客感知总体服务质量的相关性最高,而响应性最低;同时,有形性、保证性与可靠性呈高度正相关.结果表明,城市公交要继续加强服务的可靠性管理、不断提高司乘人员的服务意识;同时需要强化公交车车体形象管理并采取人性化管理措施,对提高城市公交的乘客感知服务质量具有积极的促进作用. 相似文献
32.
为探究自行车骑行者在骑行过程中的生理、心理状态与骑行者个体属性、骑行强度及骑行环境之间的影响规律, 设计并实施了自行车骑行试验; 选取了相对代谢率、心境状态、自感疲劳程度和任务负荷指数等指标, 分析了骑行者生理、心理与综合负荷感知的特性及规律; 以骑行试验数据为基础, 应用偏最小二乘回归方法建立了骑行者生理、心理及综合负荷感知模型, 并对模型预测能力进行评估。研究结果表明: 骑行者个体属性、骑行强度及骑行环境均对骑行者负荷感知有影响, 其中骑行者个体属性因素中, 身体质量指数和基础代谢率作用较为显著, 二者在负荷感知模型中的平均影响因子分别为0.121和0.112;骑行强度因素中骑行时间对于负荷感知影响最大, 其平均影响因子为0.139;骑行环境因素中交叉口数对骑行负荷感知影响最为显著, 其平均影响因子为0.137;各个变量对心理负荷与综合负荷感知的影响趋势相同, 对生理负荷与综合负荷的影响趋势不相同。可见, 关注部分因素以及骑行者心理负荷对于提高骑行服务水平具有一定作用, 研究结果可应用于改善自行车骑行设施环境。 相似文献
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34.
危险感知能力对驾驶人的驾驶行为模式具有重要影响。为准确评估驾驶人的危险感知能力、提升危险感知水平判别的准确度,提出了基于模拟驾驶技术的危险感知能力影响分析方法和基于极端梯度提升树（XGBoost）算法的危险感知水平判别模型。通过设计3种常见交通冲突场景,采集模拟驾驶中驾驶人的多维度驾驶行为特征数据,并分析危险感知能力与驾驶行为的相关关系。通过模拟实验发现：驾驶人对行人的危险感知能力较弱,易发生碰撞事故;驾驶人在危险场景中的车速（p＝0.01）、制动反应位置（p < 0.01）以及反应时间（p < 0.01）与危险感知水平之间存在显著负相关关系。在相关性分析的基础上,利用XGBoost算法识别能反映驾驶人危险感知能力的重要特征变量,并构建以制动反应位置、反应时间、车速、刹车深度,以及加速度为指标的驾驶人危险感知水平判别模型;通过与LightGBM、支持向量机（SVM）,以及逻辑回归（LR）等算法分类预测性能的对比分析,评价危险感知模型的判别精度,结果表明：基于XGBoost算法的危险感知水平判别模型的判别准确率为84.8%、F1值为83.4%、AUC值为0.959,优于LightGBM（准确率为78.8%、F1值为76.7%、AUC值为0.924）、SVM（准确率为57.6%、F1值为42.2%、AUC值为0.859）,以及LR算法（准确率为69.7%、F1值为65.5%、AUC值为0.836）。所提方法可为判别驾驶人危险感知能力及其对驾驶行为模式的影响提供可靠手段。 相似文献
35.
人的全面发展与高等教育民众人才观的走向 总被引：3，自引：0，他引：3
人才观研究在教育理论界往往偏重于观念内容，而忽视了观念主体。本从高等教育人才观的民众主体角度展开分析，就高等教育民众人才观的观念内容作了哲学层次上的探索，藉此对当前两种典型的民众人才观进行了反思，并揭示了高等教育民众人才观的逻辑走向。 相似文献
36.
Urban populations transport risk perception is interesting because it is associated with travel mode choices and use. This study investigates changes in transport-related risk constructs in the urban population in Norway in 2004 and 2013, and describes whether people perceive private or public to be associated with the highest risk. The results are based on self-completion questionnaire surveys conducted in two independent representative samples living in the same urban areas in 2004 (n?=?592) and 2013 (n?=?1035). Overall, the respondents perceived the risk as lower in 2013 than in 2004. For both time periods, people consistently assessed the risk constructs related to private motorized transportation as higher than corresponding risk in public transportation. The findings suggest that while transportation risk perception in urban populations may change over time, the pattern that private motorized transportation is associated with a higher perceived risk than public transportation remains stable. 相似文献
37.
AbstractThe growing popularity of electric devices and the increasing number of hybrid and electric cars have recently raised concerns about the use of auditory signals by vulnerable road users. This paper consolidates current knowledge about the two trends in relation to cycling safety. Both a literature review and a crash data analysis were carried out. Based on a proposed conceptual model, knowledge gaps are identified that need to be addressed for a better understanding of the relation between limitations on auditory information while cycling. Results suggest that the concerns regarding the use of electronic devices while cycling and the advent of hybrid and electric vehicles are justified. Listening to music and conversing on the phone negatively influence cyclists’ auditory perception, self-reported crash risk and cycling performance. With regard to electric cars, a recurring problem is their quietness at low speeds. Implications of these findings in terms of cycling safety are discussed. 相似文献
38.
A mail survey of coastal user groups, academics, and state coastal zone management program managers was conducted to determine the perceptions of the performance of state coastal zone management programs relative to the protection of coastal resources, the management of coastal development, the improvement of public access, and the management of coastal hazards. Information on the perceived importance of the selected issues to each of the 24 states being studied was also solicited. Findings on the perceptions of various categories of interest groups, academics, and program managers with respect to the overall performance of state coastal zone management programs in the four issue areas were presented in an earlier article, “Perceptions of the Performance of State Coastal Zone Management Programs in the United States”; (Knecht et al., 1996). The present article draws on a subset of these data—the responses from the coastal user groups and the academics—and presents the findings at the regional and individual state level. In terms of perceived performance of state coastal zone management programs on a regional basis relative to the selected issue areas, the highest rating went to the Great Lakes region for its management of public access. However, the North Atlantic region received the highest performance rating for the three other issue areas: protection of coastal resources, management of coastal development, and management of coastal hazards. Looking at state performance with regard to the coastal issues judged to be of most importance to the states—the protection of coastal resources and the management of coastal development—respondents indicated that states should improve their performance in both areas, with the greatest need related to the management of coastal development. Overall, the states of the North Atlantic, Great Lakes, and South Atlantic regions were perceived to be performing somewhat better relative to the four issue areas than the states in the Pacific and Gulf of Mexico regions. While the data do not shed light on the reasons for these regional differences, we suggest that, in the case of the Pacific region at least, the differences could be associated with higher expectations among the resident population with regard to environmental quality in general and coastal management in particular. 相似文献
39.
随着信息技术的飞速发展,大数据和智能化技术已经深入到各个领域。铁路客运作为国民经济的重要组成部分,其大数据智能化应用更具重要意义。文章以此为背景,介绍铁路客运大数据智能化应用在市场感知方面的典型应用案例,以及大数据技术在客运需求挖掘、决策建议、市场营销、安全保障等方面的应用方案。客运大数据和智能化技术为提高铁路客运服务质量、优化运输组织、确保行车安全提供了新的技术手段。
相似文献40.
列车自主运行系统(train autonomous circumambulate system,TACS)是未来城市轨道交通信号系统的发展方向,目前在部分城市轨道交通中得到应用。不同于传统的基于通信的列车自动控制系统(communication basedtrain control system,CBTC),TACS 系统降级方案尚未形成统一标准,有必要针对现有 TACS 系统降级方案进行工程适用性分析。基于 TACS 工作原理,探讨配置降级系统的必要性;结合 TACS 系统现阶段发展现状,总结了3 种现有可行的 TACS 降级方案,介绍不同降级方案的架构和工作原理,并从系统构成、应用场景、降级下追踪能力等层面对 3 种 TACS 降级方案进行定性分析;建立降级下列车追踪时间模型,在相同工程条件下,对 3 种 TACS降级方案的降级列车追踪场景进行仿真,根据仿真结果得出影响降级追踪效率的因素。在上述研究基础上,总结TACS 降级系统的关键条件,对 3 种降级方案的工程适用性、应用效果进行分析,并提出部分改进建议。 相似文献