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Analyzing distributions for travel time data collected using radiofrequency identification technique in urban road networks
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作者 GUO JianHua LI ChangGuang +3 位作者 QIN Xiao HUANG Wei WEI Yun CAO JinDe 《中国科学:技术科学英文版》 SCIE EI CAS CSCD 2019年第1期106-120,共15页
Travel time distribution studies are fundamental for supporting transportation system reliability studies, particularly for urban road networks. However, such studies are generally based on travel time data sets with ... Travel time distribution studies are fundamental for supporting transportation system reliability studies, particularly for urban road networks. However, such studies are generally based on travel time data sets with limited sample sizes, which provide inconsistent findings. In this paper, a large amount of travel time data collected from the emerging radio frequency identification(RFID) technique are used to conduct empirical investigations and estimations of travel time distributions, and three major findings are determined. First, travel time data are shown to have a complex statistical structure: the travel time distribution is in general peaky, multi-modal, and skewed to the right, which cross validates findings shown in previous publications. Second, unimodal distribution models are shown to be unable to capture the complex statistical dynamics embedded in the travel time data;therefore,a multistate distribution model is more appropriate for modeling travel time distributions. In this respect, a three-component gaussian mixture model(GMM) is tested and results consistently outperform those of unimodal distribution models. Finally, the aggregation time interval is shown to have a trivial effect on the shape of travel time distributions: the travel time distribution is stable under different aggregation time intervals. Future work is recommended to investigate further travel time variabilities and travel time distribution estimations. 展开更多
关键词 reliability TRAVEL TIME TRAVEL TIME distribution TIME INTERVAL RFID
汇率变动如何影响旅游服务贸易——基于“第三方市场效应”的研究
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作者 刘啟仁 李梦青 黄建忠 《国际贸易问题》 CSSCI 北大核心 2019年第6期160-174,共15页
本文分析汇率变动对旅游服务贸易的微观影响机制,发现本币实际汇率升值会对旅游服务贸易产生'第三方市场效应',即一方面提升本地至目的地出境旅游服务贸易,另一方面降低本地至目的地以外的第三方旅游服务贸易,带来'跟着汇... 本文分析汇率变动对旅游服务贸易的微观影响机制,发现本币实际汇率升值会对旅游服务贸易产生'第三方市场效应',即一方面提升本地至目的地出境旅游服务贸易,另一方面降低本地至目的地以外的第三方旅游服务贸易,带来'跟着汇率去旅行'的行为模式。本文采用1985—2010年跨国面板数据的计量分析表明,本币汇率升值不但从'集约边际'显著增加了对原有目的地的旅游金额,而且从'扩展边际'显著提升了向新目的地出境游的概率。进一步采用包含详细目的地和来源地的中国出入境旅游人数数据进行研究,发现从旅游人数角度也验证了'第三方市场效应',这说明汇率变动显著地通过影响自然人的出境选择来影响旅游服务贸易的金额。 展开更多
关键词 旅游服务贸易 汇率变动 第三方市场效应 出境游
记录、记忆与变迁:冷战期间华侨的文化认同研究——以陈哲明《中国纪游》为例 预览
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作者 陈嘉顺 《汕头大学学报:人文社会科学版》 2019年第3期87-93,96共8页
1950年代的中国和东南亚,国家之间的关系风云变幻,社会变迁深刻地影响了生活在东南亚的华侨华人,他们通过各种途径对故乡社会进行回忆和记录,回中国旅游之后形成的游记就是其中一种。通过对1957年回中国旅游的马来亚华侨陈哲明所著的《... 1950年代的中国和东南亚,国家之间的关系风云变幻,社会变迁深刻地影响了生活在东南亚的华侨华人,他们通过各种途径对故乡社会进行回忆和记录,回中国旅游之后形成的游记就是其中一种。通过对1957年回中国旅游的马来亚华侨陈哲明所著的《中国纪游》一书的研究,从背景与材料的分析,旅游的记录与作者的记忆,序言、赠诗等与陈哲明形象的变迁,以及陈哲明没有留下汕头影像等方面展开讨论,提出如何理解海外华人身份认同与离散情结的一点看法。 展开更多
关键词 游记 海外华人 侨居国 祖居国 中国纪游
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'Happy Chinese New Year'in Denmark and Iceland 预览
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作者 Bai Jie 《中外文化交流:英文版》 2019年第2期17-18,共2页
It is the first time for an activity of" Happy Chinese New Year" to be held on a cruise ship and also the first time for the combination of cultural exchange and tourism promotion in an overseas cultural exc... It is the first time for an activity of" Happy Chinese New Year" to be held on a cruise ship and also the first time for the combination of cultural exchange and tourism promotion in an overseas cultural exchange activity. It has great results in playing the active role of promoting tourism with cultural exchange and highlight culture with travel. 展开更多
关键词 HAPPY CHINESE New YEAR PLAYING the active HIGHLIGHT culture with TRAVEL
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China’s National Image in Western Travel Writings in the Age of Discovery 预览
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作者 LI Chaojun 《景观研究:英文版》 2019年第3期75-77,81共4页
Western travel writings about China provided material driving and theoretical guidance for the Age of Discovery, and became the main spiritual motive of the Westerners voyage to the East. In the Age of Discovery, the ... Western travel writings about China provided material driving and theoretical guidance for the Age of Discovery, and became the main spiritual motive of the Westerners voyage to the East. In the Age of Discovery, the image of China in the eyes of Western envoys, merchants and missionaries begun to fade away from traditional mythological and psychedelic colors, and the image of cultural elements such as material, spirit and history become clear. These Western travelers tried to shape the image of China as a state of civilization and wisdom, a state of moral order, and a state of wealth and power. On the basis of the continued description of the kingship and wealth of the Middle Ages, they constructed an overall image of China as a powerful state of civilization and wealth, thus forming a new frame of reference for cognition of China. 展开更多
关键词 Age of DISCOVERY TRAVEL writings China’s IMAGE
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Multidimensional Visualization of Bikeshare Travel Patterns Using a Visual Data Mining Technique:Data Cubes 预览
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作者 Xinwei Ma Yanjie Ji +2 位作者 Yang Liu Yuchuan Jin Chenyu Yi 《北京理工大学学报:英文版》 EI CAS 2019年第2期265-277,共13页
In order to explore the travel characteristics and space-time distribution of different groups of bikeshare users,an online analytical processing(OLAP)tool called data cube was used for treating and displaying multi-d... In order to explore the travel characteristics and space-time distribution of different groups of bikeshare users,an online analytical processing(OLAP)tool called data cube was used for treating and displaying multi-dimensional data.We extended and modified the traditionally threedimensional data cube into four dimensions,which are space,date,time,and user,each with a user-specified hierarchy,and took transaction numbers and travel time as two quantitative measures.The results suggest that there are two obvious transaction peaks during the morning and afternoon rush hours on weekdays,while the volume at weekends has an approximate even distribution.Bad weather condition significantly restricts the bikeshare usage.Besides,seamless smartcard users generally take a longer trip than exclusive smartcard users;and non-native users ride faster than native users.These findings not only support the applicability and efficiency of data cube in the field of visualizing massive smartcard data,but also raise equity concerns among bikeshare users with different demographic backgrounds. 展开更多
关键词 bikeshare smartcard data TRAVEL PATTERN MULTIDIMENSIONAL VISUALIZATION
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基于用户体验的高铁出行产品研究与设计 预览
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作者 温权凯 《科技创新与应用》 2019年第6期109-110,共2页
随着高铁的不断发展,以复兴号为主的高铁逐步覆盖了WiFi网络,高铁网与互联网逐步形成“双网融合”。在此背景下,需要针对高铁出行设计一款互联网产品,帮助旅客顺利出行。通过对高铁出行产品的特点分析,采用以用户体验为中心的设计思路... 随着高铁的不断发展,以复兴号为主的高铁逐步覆盖了WiFi网络,高铁网与互联网逐步形成“双网融合”。在此背景下,需要针对高铁出行设计一款互联网产品,帮助旅客顺利出行。通过对高铁出行产品的特点分析,采用以用户体验为中心的设计思路和方法流程,对旅客整个高铁乘坐场景进行分析,得出包括场景目标,市场情况,产品功能,用户画像和旅程等的高铁出行产品设计策略。 展开更多
关键词 高铁 出行 设计
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Photo news 预览
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《今日中国:英文版》 2019年第5期12-13,共2页
April 13, 2019 A music event is held in the old arcade of Haikou, Hainan Province.April 18, 2019 The 16th Shanghai World Travel Fair (SWTF 2019) opens in the Shanghai Exhibition Center. Exhibitors, travel agencies, an... April 13, 2019 A music event is held in the old arcade of Haikou, Hainan Province.April 18, 2019 The 16th Shanghai World Travel Fair (SWTF 2019) opens in the Shanghai Exhibition Center. Exhibitors, travel agencies, and travel service providers from various tourist destinations gather at the event, which enjoys much popularity. 展开更多
关键词 SHANGHAI World TRAVEL FAIR EXHIBITION Center
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Travel Time Tomography
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作者 Plamen STEFANOV Gunther UHLMANN +1 位作者 Andras VASY Hanming ZHOU 《数学学报:英文版》 SCIE CSCD 2019年第6期1085-1114,共30页
We survey some results on travel time tomography. The question is whether we can determine the anisotropic index of refraction of a medium by measuring the travel times of waves going through the medium. This can be r... We survey some results on travel time tomography. The question is whether we can determine the anisotropic index of refraction of a medium by measuring the travel times of waves going through the medium. This can be recast as geometry problems, the boundary rigidity problem and the lens rigidity problem. The boundary rigidity problem is whether we can determine a Riemannian metric of a compact Riemannian manifold with boundary by measuring the distance function between boundary points. The lens rigidity problem problem is to determine a Riemannian metric of a Riemannian manifold with boundary by measuring for every point and direction of entrance of a geodesic the point of exit and direction of exit and its length. The linearization of these two problems is tensor tomography. The question is whether one can determine a symmetric two-tensor from its integrals along geodesics. We emphasize recent results on boundary and lens rigidity and in tensor tomography in the partial data case, with further applications. 展开更多
关键词 TRAVEL time TOMOGRAPHY boundary RIGIDITY LENS RIGIDITY TENSOR TOMOGRAPHY full DATA partial DATA
A Demand Forecasting Method Based on Stochastic Frontier Analysis and Model Average: An Application in Air Travel Demand Forecasting
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作者 ZHANG Xinyu ZHENG Yafei WANG Shouyang 《系统科学与复杂性学报:英文版》 SCIE EI CSCD 2019年第2期615-633,共19页
Demand forecasting is often difficult due to the unobservability of the applicable historical demand series. In this study, the authors propose a demand forecasting method based on stochastic frontier analysis(SFA) mo... Demand forecasting is often difficult due to the unobservability of the applicable historical demand series. In this study, the authors propose a demand forecasting method based on stochastic frontier analysis(SFA) models and a model average technique. First, considering model uncertainty,a set of alternative SFA models with various combinations of explanatory variables and distribution assumptions are constructed to estimate demands. Second, an average estimate from the estimated demand values is obtained using a model average technique. Finally, future demand forecasts are achieved, with the average estimates used as historical observations. An empirical application of air travel demand forecasting is implemented. The results of a forecasting performance comparison show that in addition to its ability to estimate demand, the proposed method outperforms other common methods in terms of forecasting passenger traffic. 展开更多
关键词 Air TRAVEL DEMAND DEMAND forecasting MODEL AVERAGE MODEL uncertainty STOCHASTIC FRONTIER analysis
高速旅行
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作者 Melissa Repko 徐佩仪(译) 《空中英语教室:高级版.彭蒙惠英语》 2019年第1期16-17,41,42共4页
交通官员考量充满未来感的超高速管道列车当地的交通官员正在研议让达拉斯一沃斯堡区快速迈向未来的方法。他们正考虑使用超高速管道列车,一种用低压管道运送乘客的高科技系统。区域运输委员会宣布将考虑以超高速管道列车连接达拉斯、... 交通官员考量充满未来感的超高速管道列车当地的交通官员正在研议让达拉斯一沃斯堡区快速迈向未来的方法。他们正考虑使用超高速管道列车,一种用低压管道运送乘客的高科技系统。区域运输委员会宣布将考虑以超高速管道列车连接达拉斯、沃斯堡、阿灵顿的可行性。 展开更多
关键词 旅行 管道列车 超高速 科技系统 低压管道 区域运输 达拉斯 官员
徽文化旅游外宣文本英译现状及翻译方法探析 预览
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作者 王媛媛 《安徽警官职业学院学报》 2019年第2期113-115,共3页
徽文化旅游资源丰富,是传播、推介安徽形象的重要载体。通过搜集当前徽文化旅游资源英译文本,分析当前徽文化旅游外宣文本的英译现状,并从加注、释义和省译等方面提出翻译方法,从而提高徽文化旅游外宣资料的翻译质量,推动徽文化的对外... 徽文化旅游资源丰富,是传播、推介安徽形象的重要载体。通过搜集当前徽文化旅游资源英译文本,分析当前徽文化旅游外宣文本的英译现状,并从加注、释义和省译等方面提出翻译方法,从而提高徽文化旅游外宣资料的翻译质量,推动徽文化的对外传播。 展开更多
关键词 徽文化 旅游 翻译 方法
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城市住区适宜步行的物质空间形态要素研究--基于重庆市南岸区16个住区的实证 预览
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作者 鲁斐栋 谭少华 《规划师》 北大核心 2019年第7期69-76,共8页
文章以重庆市南岸区的16个城市住区为例,通过问卷调查、GIS及现场勘测获取步行行为、人群社会属性、物质空间形态等基础数据,并运用相关分析和回归模型的数理统计方法,从临近性、连接性和场所性3个方面进行宜步行城市住区的物质空间形... 文章以重庆市南岸区的16个城市住区为例,通过问卷调查、GIS及现场勘测获取步行行为、人群社会属性、物质空间形态等基础数据,并运用相关分析和回归模型的数理统计方法,从临近性、连接性和场所性3个方面进行宜步行城市住区的物质空间形态要素分析,结果发现:临近性要素中的设施密度、设施种类、文化娱乐设施密度、教育设施密度、绿色开敞空间密度、公交换乘密度、文化娱乐设施距离和教育设施距离;连接性要素中的街道路网密度;场所性要素中的可步行面积、8 m以上步行道长度密度、地块出入口密度、大于15家/100 米沿街商业长度密度是构成城市住区宜步行的物质空间形态的重要因素,其中设施数量、街道网络密度、地块出入口密度、大于15家/100 米沿街商业长度密度是最重要的要素。在研究结果基础上,文章提出功能诱发(临近性)、路径诱发(连接性)和场所诱发(场所性)三大宜步行住区规划设计策略。 展开更多
关键词 城市住区 物质空间形态 步行行为 出行
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湘西地区民族传统节庆体育与旅游融合发展研究 预览
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作者 王丹 《四川体育科学》 2019年第2期103-105,共3页
21世纪,旅游逐渐成为了一种时尚的消费方式,至全域旅游概念提出以后,"旅游+"方式成为了最新的旅游模式。这种新的旅游模式满足了人们日益丰富的对旅游的新要求,也推动加速了相关产业的发展,产生了一系列联动效应。以此为契机... 21世纪,旅游逐渐成为了一种时尚的消费方式,至全域旅游概念提出以后,"旅游+"方式成为了最新的旅游模式。这种新的旅游模式满足了人们日益丰富的对旅游的新要求,也推动加速了相关产业的发展,产生了一系列联动效应。以此为契机,本文以湘西地区民族传统节庆体育与旅游融合发展为研究对象,通过了解湘西地区民族传统节庆体育开展的现状,分析发展困境及影响因子,并结合自身优势及价值,提出湘西州传统节庆体育与旅游业融合发展的对策。为湘西地区及周边民族地区创建节庆体育与旅游业融合发展模式提供理论与实践参考。 展开更多
关键词 湘西地区 民族传统节庆体育 旅游 融合发展
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Image Style of the Tianping Mountain Landscape in the Ming Dynasty 预览
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作者 XIONG Jingwen CHEN Xiaogang 《景观研究:英文版》 2019年第3期123-126,共4页
Starting from the Tianping Mountain theme painting in Suzhou in the Ming Dynasty, we explore how did the painters and literati in this period shape the image of the Tianping Mountain through their works, thereby refle... Starting from the Tianping Mountain theme painting in Suzhou in the Ming Dynasty, we explore how did the painters and literati in this period shape the image of the Tianping Mountain through their works, thereby reflecting their understanding on many landscapes on the Tianping Mountain. By exploring a series of paintings and poems, we try to analyze the characteristics and cultural connotation of landscape paintings of the Tianping Mountain in the Ming Dynasty, which is conducive to improving position of the Tianping Mountain natural and humanistic landscape in Suzhou. 展开更多
关键词 The Ming DYNASTY The Tianping MOUNTAIN of SUZHOU LANDSCAPE image Travel atlas LITERATI PAINTING
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现代游憩商业街满意度评价研究--以杭州市延安路为例
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作者 叶洋洋 唐代剑 《经济地理》 CSSCI CSCD 北大核心 2019年第4期232-240,共9页
现代游憩商业街是文、旅、商融合的重要载体,是现代城市的窗口。文章探讨现代游憩商业街的满意度评价体系构成,以杭州市延安路为典型案例,对比分析影响游客与居民对现代游憩商业街满意评价的主要因素。研究表明:①延安路的客源以中、青... 现代游憩商业街是文、旅、商融合的重要载体,是现代城市的窗口。文章探讨现代游憩商业街的满意度评价体系构成,以杭州市延安路为典型案例,对比分析影响游客与居民对现代游憩商业街满意评价的主要因素。研究表明:①延安路的客源以中、青年白领、蓝领及学生为主,呈现年轻化态势;②现代游憩商业街的满意度评价体系包含6个影响因子,即商业、交通、景观、休闲、设施、文化-服务因素,游客与居民对各因素的满意评价不尽相同;③6个因子对总体满意及游客和居民双方满意度均有不同程度影响,其中,商业因素影响最大,且居民满意更受文化-服务因素影响,而游客满意则更受景观因素影响;④经IPA分析,对比得出游客与居民双方感知下需改进及提升的举措。 展开更多
关键词 现代游憩商业街 游客 居民 满意度 文、旅、商融合 智慧商业 旅游新业态
凉山彝族自治州马湖乡旅游精准扶贫路径初探 预览
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作者 赵彬伽 李娴 《湖北农业科学》 2019年第6期152-155,160共5页
以凉山彝族自治州雷波县马湖乡为例,对当地村民旅游开发的意愿与态度进行了问卷调查,分析了其结果,探讨旅游精准扶贫路径,以期为其他民族地区旅游脱贫发展提供案例参考。
关键词 民族地区 旅游 精准扶贫 扶贫路径 凉山彝族自治州马湖乡
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Exploring the Evolution of Passenger Flow and Travel Time Reliability with the Expanding Process of Metro System Using Smartcard Data 预览
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作者 Xinwei Ma Yanjie Ji +1 位作者 Yao Fan Chenyu Yi 《哈尔滨工业大学学报:英文版》 EI CAS 2019年第1期17-29,共13页
Metro system has experienced the global rapid rise over the past decades. However, few studies have paid attention to the evolution in system usage with the network expanding. The paper’s main objectives are to analy... Metro system has experienced the global rapid rise over the past decades. However, few studies have paid attention to the evolution in system usage with the network expanding. The paper’s main objectives are to analyze passenger flow characteristics and evaluate travel time reliability for the Nanjing Metro network by visualizing the smart card data of April 2014, April 2015 and April 2016. We performed visualization techniques and comparative analyses to examine the changes in system usage between before and after the system expansion. Specifically, workdays, holidays and weekends were specially segmented for analysis. Results showed that workdays had obvious morning and evening peak hours due to daily commuting, while no obvious peak hours existed in weekends and holidays and the daily traffic was evenly distributed. Besides, some metro stations had a serious directional imbalance, especially during the morning and evening peak hours of workdays. Serious unreliability occurred in morning peaks on workdays and the reliability of new lines was relatively low, meanwhile, new stations had negative effects on exiting stations in terms of reliability. Monitoring the evolution of system usage over years enables the identification of system performance and can serve as an input for improving the metro system quality. 展开更多
关键词 METRO expansion smart card DATA PASSENGER flow characteristics TRAVEL time reliability visualization
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旅游高职教育发展困境及对策研究 预览
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作者 陈格 《科教文汇》 2019年第17期119-120,共2页
近几年,随着国家经济实力的日益强大,老百姓的可支配收入越来越高,旅游越来越成为老百姓日常生活的一部分。老百姓对旅游需求的迅猛增长,给我们的旅游高等教育带来机会的同时,也带来了新的挑战。旅游市场对专业人才的要求越来越高,专业... 近几年,随着国家经济实力的日益强大,老百姓的可支配收入越来越高,旅游越来越成为老百姓日常生活的一部分。老百姓对旅游需求的迅猛增长,给我们的旅游高等教育带来机会的同时,也带来了新的挑战。旅游市场对专业人才的要求越来越高,专业性强、服务意识强让很多高职旅游专业毕业生措手不及、无法适应,于是跳槽的有之,转行的亦有之。笔者从当下旅游高职教育发展的困境出发,通过现状研究、问题查找,期望能为高职旅游专业建设寻求出路,从而带动整个旅游高职教育的发展。 展开更多
关键词 旅游 高职教育 困境
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A Flexible Multi-Layer Map Model Designed for Lane-Level Route Planning in Autonomous Vehicles 预览
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作者 Kun Jiang Diange Yang +2 位作者 Chaoran Liu Tao Zhang Zhongyang Xiao 《工程(英文)》 2019年第2期305-318,共14页
An increasing number of drivers are relying on digital map navigation systems in vehicles or mobile phones to select optimal driving routes in order to save time and improve safety. In the near future, digital map nav... An increasing number of drivers are relying on digital map navigation systems in vehicles or mobile phones to select optimal driving routes in order to save time and improve safety. In the near future, digital map navigation systems are expected to play more important roles in transportation systems. In order to extend current navigation systems to more applications, two fundamental problems must be resolved: the lane-level map model and lane-level route planning. This study proposes solutions to both problems. The current limitation of the lane-level map model is not its accuracy but its flexibility;this study proposes a novel seven-layer map structure, called as Tsinghua map model, which is able to support autonomous driving in a flexible and efficient way. For lane-level route planning, we propose a hierarchical route-searching algorithm to accelerate the planning process, even in the presence of complicated lane networks. In addition, we model the travel costs allocated for lane-level road networks by analyzing vehicle maneuvers in traversing lanes, changing lanes, and turning at intersections. Tests were performed on both a grid network and a real lane-level road network to demonstrate the validity and efficiency of the proposed algorithm. 展开更多
关键词 Lane-level ROUTE planning Tsinghua map MODEL TRAVEL cost MODEL
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