首页 > 最新文献

交通与运输工程:英文版最新文献

英文 中文
Optimization of Continuous Airworthiness Problems 连续适航问题的优化
Pub Date : 2018-12-28 DOI: 10.17265/2328-2142/2018.06.004
Q. Hassan, K. Kustroń, M. Jaszczur, M. Ajaweed
: Recently aviation accident data shows that many fatal accidents in aviation are due to airworthiness issues despite the fact that all civil and private aircraft are required to comply with the airworthiness standards set by their national airworthiness authority. This paper presents a unique approach to continuous airworthiness problems optimization needed to reduce the risk associated with the gap between aircraft designers & manufacturing organization and continuing airworthiness (state of civil aviation authority and air operators). As a result of the paper summarizes these problems and searching of the possible solutions to be optimized, these problems are achieved to get more integration between (designers& manufacturing and air operators), finally the recommendations are drawn to address the safe operation of the aircraft and can be given to the International Civil Aviation Organization (ICAO), Federal Aviation Administration (FAA) and European Aviation Safety Agency (EASA) and Civil Aviation Authorities (CAAs) for more integration between all of them structure.
当前位置最近的航空事故数据显示,尽管所有民用和私人飞机都要求符合其国家适航当局制定的适航标准,但许多致命的航空事故都是由于适航问题造成的。本文提出了一种独特的持续适航问题优化方法,以减少飞机设计和制造组织与持续适航(民航局和航空运营商的状态)之间的差距所带来的风险。由于本文总结了这些问题,并寻找可能的解决方案进行优化,这些问题得到了实现(设计师&制造和航空运营商)之间的更多整合,最后提出了建议,以解决飞机的安全运行,并可以给国际民用航空组织(ICAO)。美国联邦航空管理局(FAA)、欧洲航空安全局(EASA)和民航局(CAAs)之间的结构更加一体化。
{"title":"Optimization of Continuous Airworthiness Problems","authors":"Q. Hassan, K. Kustroń, M. Jaszczur, M. Ajaweed","doi":"10.17265/2328-2142/2018.06.004","DOIUrl":"https://doi.org/10.17265/2328-2142/2018.06.004","url":null,"abstract":": Recently aviation accident data shows that many fatal accidents in aviation are due to airworthiness issues despite the fact that all civil and private aircraft are required to comply with the airworthiness standards set by their national airworthiness authority. This paper presents a unique approach to continuous airworthiness problems optimization needed to reduce the risk associated with the gap between aircraft designers & manufacturing organization and continuing airworthiness (state of civil aviation authority and air operators). As a result of the paper summarizes these problems and searching of the possible solutions to be optimized, these problems are achieved to get more integration between (designers& manufacturing and air operators), finally the recommendations are drawn to address the safe operation of the aircraft and can be given to the International Civil Aviation Organization (ICAO), Federal Aviation Administration (FAA) and European Aviation Safety Agency (EASA) and Civil Aviation Authorities (CAAs) for more integration between all of them structure.","PeriodicalId":62390,"journal":{"name":"交通与运输工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45658904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Road Surface Condition and Monitoring System Utilizing Motorcycle (ROCOM)—System Development, Validation and Field Test 摩托车路面状况监测系统(ROCOM) -系统开发、验证和现场测试
Pub Date : 2018-12-28 DOI: 10.17265/2328-2142/2018.06.003
M. A. Manan, Muhammad RuhaizatAbdGhani
: Motorcycles are the riskiest mode of travel in Malaysia, however motorcycles are also very sensitive to the road surface condition. Thus, by taking advantage of this, a system of software applications that analyses motorcycle motion and mapped out risky road sections was developed, i.e. ROCOM. The system consists of three major components, i.e. ROCOM Data Logger app, which utilizes a smart phone to collect acceleration data, ROCOM Risk Mapping app, which is a web-based application, and ROCOM Visual Tracking, which is a stand along software. ROCOM is able to detect adverse acceleration (> 2g) or vibration on the road surface similar to the High Accuracy GPS Data Logging for Vehicle Testing (VBOX). Risk mapping validation along a section of the motorcycle lane along Federal Route 2 shows that not only ROCOM have the similar risk-mapping pattern, but its route tracking capability on the map is far superior that the VBOX. The pilot and field test results showed that ROCOM works best when mounting the smartphone on the motorcycle handle bar or basket, and it can detect various road anomalies with successful detection rate of 62%, with high detection rate when passing through uneven road surfaces.
:摩托车是马来西亚最危险的出行方式,但摩托车对路面状况也非常敏感。因此,利用这一点,开发了一个分析摩托车运动并绘制危险路段地图的软件应用系统,即ROCOM。该系统由三个主要组件组成,即利用智能手机收集加速度数据的ROCOM Data Logger应用程序、基于网络的ROCOM Risk Mapping应用程序和独立软件ROCOM Visual Tracking。ROCOM能够检测路面上的不利加速度(>2g)或振动,类似于车辆测试的高精度GPS数据记录(VBOX)。沿着联邦2号公路的一段摩托车车道进行的风险映射验证表明,ROCOM不仅具有类似的风险映射模式,而且其在地图上的路线跟踪能力远优于VBOX。中试和现场测试结果表明,ROCOM在将智能手机安装在摩托车车把或车筐上时效果最好,可以检测各种道路异常,成功检测率为62%,在通过不平路面时检测率很高。
{"title":"Road Surface Condition and Monitoring System Utilizing Motorcycle (ROCOM)—System Development, Validation and Field Test","authors":"M. A. Manan, Muhammad RuhaizatAbdGhani","doi":"10.17265/2328-2142/2018.06.003","DOIUrl":"https://doi.org/10.17265/2328-2142/2018.06.003","url":null,"abstract":": Motorcycles are the riskiest mode of travel in Malaysia, however motorcycles are also very sensitive to the road surface condition. Thus, by taking advantage of this, a system of software applications that analyses motorcycle motion and mapped out risky road sections was developed, i.e. ROCOM. The system consists of three major components, i.e. ROCOM Data Logger app, which utilizes a smart phone to collect acceleration data, ROCOM Risk Mapping app, which is a web-based application, and ROCOM Visual Tracking, which is a stand along software. ROCOM is able to detect adverse acceleration (> 2g) or vibration on the road surface similar to the High Accuracy GPS Data Logging for Vehicle Testing (VBOX). Risk mapping validation along a section of the motorcycle lane along Federal Route 2 shows that not only ROCOM have the similar risk-mapping pattern, but its route tracking capability on the map is far superior that the VBOX. The pilot and field test results showed that ROCOM works best when mounting the smartphone on the motorcycle handle bar or basket, and it can detect various road anomalies with successful detection rate of 62%, with high detection rate when passing through uneven road surfaces.","PeriodicalId":62390,"journal":{"name":"交通与运输工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47277008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Marshall Characteristics of Bituminous Mixes Using Reclaimed Asphalt Pavement 再生沥青路面沥青混合料的马歇尔特性
Pub Date : 2018-10-31 DOI: 10.11648/J.AJTTE.20180304.11
G. M. Harun-Or-Rashid, B. Ahmed, M. A. Sobhan, Nafiur Rahman
Recycling is the running trend through all over the world. To save money and keep environment pollution free recycling of waste materials is the best way. Reclaimed Asphalt Pavement (RAP) is such type of waste materials, which are obtained huge amount from spoiled pavement. During this investigation an attempt is made to study the behavior of RAP materials for reuse in road construction. Aggregate Crushing Value, Aggregate Impact Value, Loss Angeles Abrasion Value and Ten percent fine value tests are also performed to determine the strength properties of coarse aggregate. Standard Marshall Mix Design procedure is followed in the design and testing of those mixes. The study reveals that untreated RAP materials are not good as a bituminous mix, but it can be acceptable with additional 1% bitumen content for use in the surface course of bituminous pavement. The investigation also indicates the possibility of adding coarse aggregate from RAP materials in the bituminous mixes with fresh aggregates, which gives satisfactory results. In our Indian subcontinent like Bangladesh, the rate of using RAP materials is very low. For that reason, the findings of the study will help in the development of sustainable road infrastructure for recycling in Indian Subcontinent.
回收利用是当今世界的发展趋势。为了省钱和保持环境无污染,回收废物是最好的方法。再生沥青路面(RAP)就是这类废弃物,其大量来源于变质的路面。在本次调查中,试图研究RAP材料在道路建设中的再利用行为。通过集料破碎值、集料冲击值、损失磨损值和10%细值试验确定了粗集料的强度特性。在这些混合料的设计和测试中遵循标准马歇尔混合料设计程序。研究表明,未经处理的RAP材料作为沥青混合料效果不佳,但在添加1%沥青含量的情况下,用于沥青路面面层是可以接受的。研究还表明,在新集料沥青混合料中加入RAP材料粗集料的可能性较大,取得了满意的效果。在我们印度次大陆,比如孟加拉国,使用RAP材料的比例非常低。因此,这项研究的结果将有助于在印度次大陆发展可持续的回收道路基础设施。
{"title":"Marshall Characteristics of Bituminous Mixes Using Reclaimed Asphalt Pavement","authors":"G. M. Harun-Or-Rashid, B. Ahmed, M. A. Sobhan, Nafiur Rahman","doi":"10.11648/J.AJTTE.20180304.11","DOIUrl":"https://doi.org/10.11648/J.AJTTE.20180304.11","url":null,"abstract":"Recycling is the running trend through all over the world. To save money and keep environment pollution free recycling of waste materials is the best way. Reclaimed Asphalt Pavement (RAP) is such type of waste materials, which are obtained huge amount from spoiled pavement. During this investigation an attempt is made to study the behavior of RAP materials for reuse in road construction. Aggregate Crushing Value, Aggregate Impact Value, Loss Angeles Abrasion Value and Ten percent fine value tests are also performed to determine the strength properties of coarse aggregate. Standard Marshall Mix Design procedure is followed in the design and testing of those mixes. The study reveals that untreated RAP materials are not good as a bituminous mix, but it can be acceptable with additional 1% bitumen content for use in the surface course of bituminous pavement. The investigation also indicates the possibility of adding coarse aggregate from RAP materials in the bituminous mixes with fresh aggregates, which gives satisfactory results. In our Indian subcontinent like Bangladesh, the rate of using RAP materials is very low. For that reason, the findings of the study will help in the development of sustainable road infrastructure for recycling in Indian Subcontinent.","PeriodicalId":62390,"journal":{"name":"交通与运输工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46003837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Design and Analysis of Computer Experiments Based on a Simulation Model of Air Traffic Flow Optimization in Panama 巴拿马空中交通流优化仿真模型的计算机实验设计与分析
Pub Date : 2018-10-28 DOI: 10.17265/2328-2142/2018.05.001
J. Castillo, E. Jones, V. Chen, Z. Castillo
There is a growing in number of operations in aviation all over the world. This growing is increasing the necessity of innovation and new technology to respond the increment of the demand. As a respond of this demand, FAA (Federal Aviation Administration) is working with NextGen in the United States and the EUROCONTROL is implementing the Point Merge as solution in the air traffic flow management in Europe. However, the FAA alternative and EUROCONTROL alternative are not mutually exclusive since Panama, a small country in Latin America, is trying to use a combination between the vectoring approach and the Point Merge in the air traffic flow management. In addition, the AAC (Autoridad de Aereonautica Civil) and the Tocumen (Tocumen International Airport) are working in a continuous collaboration between FAA and Panama with the mutual challenge to improve the actual system. As a result, the main airline of Panama, the Compañía Panameña de Aviación (COPA Airlines), and the Autoridad de Aeronáutica Civil (AAC) constructed a simulation model to select an air traffic flow alternative that can be able to change the actual situation. In other words, COPA Airlines and AAC are pursuing the minimization of the numbers of conflicts, the number of sequence actions, the flight time, the track flight distance and the fuel burn. Furthermore, this study aims to use the final draft of this previous analysis based on a simulation methodology to conduct a Design and Analysis of Computer Experiments with the final objective to increment the statistical significance of the actual model.
全世界航空业务的数量在不断增长。这种增长增加了创新和新技术的必要性,以应对需求的增加。作为对这一需求的回应,美国联邦航空管理局(FAA)正在与美国NextGen公司合作,欧洲航空控制组织(EUROCONTROL)正在实施点合并,作为欧洲空中交通流量管理的解决方案。然而,FAA的替代方案和EUROCONTROL的替代方案并不相互排斥,因为巴拿马是拉丁美洲的一个小国,正在尝试在空中交通流量管理中使用矢量方法和点合并的结合。此外,AAC(民用航空管理局)和Tocumen(托库门国际机场)正在FAA和巴拿马之间持续合作,共同挑战改进实际系统。因此,巴拿马的主要航空公司Compañía Panameña de Aviación (COPA Airlines)和Aeronáutica Civil Autoridad de Aeronáutica (AAC)构建了一个仿真模型,以选择能够改变实际情况的空中交通流量替代方案。换句话说,COPA航空公司和AAC都在追求冲突次数、顺序动作次数、飞行时间、轨道飞行距离和燃油消耗的最小化。此外,本研究旨在利用基于仿真方法的上述分析的最终草案进行计算机实验的设计和分析,最终目的是增加实际模型的统计显著性。
{"title":"Design and Analysis of Computer Experiments Based on a Simulation Model of Air Traffic Flow Optimization in Panama","authors":"J. Castillo, E. Jones, V. Chen, Z. Castillo","doi":"10.17265/2328-2142/2018.05.001","DOIUrl":"https://doi.org/10.17265/2328-2142/2018.05.001","url":null,"abstract":"There is a growing in number of operations in aviation all over the world. This growing is increasing the necessity of innovation and new technology to respond the increment of the demand. As a respond of this demand, FAA (Federal Aviation Administration) is working with NextGen in the United States and the EUROCONTROL is implementing the Point Merge as solution in the air traffic flow management in Europe. However, the FAA alternative and EUROCONTROL alternative are not mutually exclusive since Panama, a small country in Latin America, is trying to use a combination between the vectoring approach and the Point Merge in the air traffic flow management. In addition, the AAC (Autoridad de Aereonautica Civil) and the Tocumen (Tocumen International Airport) are working in a continuous collaboration between FAA and Panama with the mutual challenge to improve the actual system. As a result, the main airline of Panama, the Compañía Panameña de Aviación (COPA Airlines), and the Autoridad de Aeronáutica Civil (AAC) constructed a simulation model to select an air traffic flow alternative that can be able to change the actual situation. In other words, COPA Airlines and AAC are pursuing the minimization of the numbers of conflicts, the number of sequence actions, the flight time, the track flight distance and the fuel burn. Furthermore, this study aims to use the final draft of this previous analysis based on a simulation methodology to conduct a Design and Analysis of Computer Experiments with the final objective to increment the statistical significance of the actual model.","PeriodicalId":62390,"journal":{"name":"交通与运输工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42252103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Safety Assessment of Closed-Loop Level Crossing Control Systems by Means of STAMP (Systems-Theoretic Accident Model and Processes) 基于STAMP(系统理论事故模型与过程)的闭环平交控制系统安全评价
Pub Date : 2018-10-28 DOI: 10.17265/2328-2142/2018.05.004
Tetsuya Takata, Akira Asano, Hideo Nakamura
There have been a large number of accidents at level crossings of railways and this has been considered to be a significant issue to be solved for the realization of safe and stable railway transport. A conventional level crossing control system is characterized by the use of two types of electronic train detectors; one detects a train approaching to a level crossing section and the other then detects the train having left the level crossing. By contrast, closed-loop level crossing control systems in which level crossing control equipment and train-borne equipment communicate with each other have been advocated and are expected to serve as an effective solution to the abovementioned issue. This paper describes the following three types of closed-loop level crossing control systems: decentralized level crossing control system, fully-centralized comprehensive level crossing control system and fully-centralized individual level crossing control system. This paper then assesses the safety of these systems in comparison to the conventional level crossing control system. For the purpose of the assessment of their safety, a new accident analysis model called STAMP (systems theoretic accident model and processes) that is suitable for software intensive systems is used to clarify the advantage of the proposed three types of level crossing control systems in terms of safety.
{"title":"Safety Assessment of Closed-Loop Level Crossing Control Systems by Means of STAMP (Systems-Theoretic Accident Model and Processes)","authors":"Tetsuya Takata, Akira Asano, Hideo Nakamura","doi":"10.17265/2328-2142/2018.05.004","DOIUrl":"https://doi.org/10.17265/2328-2142/2018.05.004","url":null,"abstract":"There have been a large number of accidents at level crossings of railways and this has been considered to be a significant issue to be solved for the realization of safe and stable railway transport. A conventional level crossing control system is characterized by the use of two types of electronic train detectors; one detects a train approaching to a level crossing section and the other then detects the train having left the level crossing. By contrast, closed-loop level crossing control systems in which level crossing control equipment and train-borne equipment communicate with each other have been advocated and are expected to serve as an effective solution to the abovementioned issue. This paper describes the following three types of closed-loop level crossing control systems: decentralized level crossing control system, fully-centralized comprehensive level crossing control system and fully-centralized individual level crossing control system. This paper then assesses the safety of these systems in comparison to the conventional level crossing control system. For the purpose of the assessment of their safety, a new accident analysis model called STAMP (systems theoretic accident model and processes) that is suitable for software intensive systems is used to clarify the advantage of the proposed three types of level crossing control systems in terms of safety.","PeriodicalId":62390,"journal":{"name":"交通与运输工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67564961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New Binders Using Natural Bitumen Selenizza 使用天然沥青Selenizza的新型粘结剂
Pub Date : 2018-09-13 DOI: 10.1007/978-3-030-00476-7_32
E. Tartari
{"title":"New Binders Using Natural Bitumen Selenizza","authors":"E. Tartari","doi":"10.1007/978-3-030-00476-7_32","DOIUrl":"https://doi.org/10.1007/978-3-030-00476-7_32","url":null,"abstract":"","PeriodicalId":62390,"journal":{"name":"交通与运输工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/978-3-030-00476-7_32","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46742488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Aerodynamic Simulation of a 2017 F1 Car with Open-Source CFD Code 基于开源CFD代码的2017 F1赛车气动仿真
Pub Date : 2018-08-28 DOI: 10.17265/2328-2142/2018.04.001
Umberto Ravelli, Marco Savini
Open-wheeled race car aerodynamics is unquestionably challenging insofar as it involves many physical phenomena, such as slender and blunt body aerodynamics, ground effect, vortex management and interaction between different sophisticated aero devices. In the current work, a 2017 F1 car aerodynamics has been investigated from a numerical point of view by using an open-source code. The vehicle project was developed by PERRINN (Copyright©2011—Present PERRINN), an engineering community founded by Nicolas Perrin in 2011. The racing car performance is quantitatively evaluated in terms of drag, downforce, efficiency and front balance. The goals of the present CFD (computational fluid dynamics)-based research are the following: analyzing the capabilities of the open-source software OpenFOAM in dealing with complex meshes and external aerodynamics calculation, and developing a reliable workflow from CAD (computer aided design) model to the post-processing of the results, in order to meet production demands.
{"title":"Aerodynamic Simulation of a 2017 F1 Car with Open-Source CFD Code","authors":"Umberto Ravelli, Marco Savini","doi":"10.17265/2328-2142/2018.04.001","DOIUrl":"https://doi.org/10.17265/2328-2142/2018.04.001","url":null,"abstract":"Open-wheeled race car aerodynamics is unquestionably challenging insofar as it involves many physical phenomena, such as slender and blunt body aerodynamics, ground effect, vortex management and interaction between different sophisticated aero devices. In the current work, a 2017 F1 car aerodynamics has been investigated from a numerical point of view by using an open-source code. The vehicle project was developed by PERRINN (Copyright©2011—Present PERRINN), an engineering community founded by Nicolas Perrin in 2011. The racing car performance is quantitatively evaluated in terms of drag, downforce, efficiency and front balance. The goals of the present CFD (computational fluid dynamics)-based research are the following: analyzing the capabilities of the open-source software OpenFOAM in dealing with complex meshes and external aerodynamics calculation, and developing a reliable workflow from CAD (computer aided design) model to the post-processing of the results, in order to meet production demands.","PeriodicalId":62390,"journal":{"name":"交通与运输工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67564394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Bandwidth Maximization Approach for Displaced Left-Turn Crossovers Coordination under Heterogeneous Traffic Conditions 异构交通条件下位移左转交叉交叉口协调的带宽最大化方法
Pub Date : 2018-08-28 DOI: 10.17265/2328-2142/2018.04.004
Sherif Shokry, Shinji Tanaka, Fumihiko Nakamura, Ryo Ariyoshi, Shino Miura
As one of the UAIDs (unconventional alternative intersection designs), DLTs (displaced left-turn crossovers) have been presented to mitigate traffic congestion. Although, qualitatively and quantitatively isolated UAIDs outperform their conventional counterparts, there is no simplified procedure to consider the DLTs coordination. Hence, this research investigates the coordination of consecutive DLTs under heterogeneous traffic conditions. To achieve the optimal coordination and provide an efficient coordination control, a bandwidth maximization progression approach was used. Seeking the optimal offset for each pair of consecutive intersections to guarantee the green bandwidth waves along the coordinated corridor, a mixed-integer linear program was adopted. The optimization problem was formulated and solved based on the standard branch-and-bound technique. As a real-world study case, data of three typical intersections located in an arterial corridor in Cairo, Egypt was used. PTV-VISSIM as a microsimulation platform was employed to simulate and evaluate the different signal timing plans. However, to represent the heterogeneous traffic characteristics as close as possible to the reality, different simulation parameters were tuned and validated carefully. The results emphasized the undoubted improvement of coordinated DLTs by different operational performance indices. The total travel time, average delay, the number of stops per vehicle were obviously improved.
{"title":"Bandwidth Maximization Approach for Displaced Left-Turn Crossovers Coordination under Heterogeneous Traffic Conditions","authors":"Sherif Shokry, Shinji Tanaka, Fumihiko Nakamura, Ryo Ariyoshi, Shino Miura","doi":"10.17265/2328-2142/2018.04.004","DOIUrl":"https://doi.org/10.17265/2328-2142/2018.04.004","url":null,"abstract":"As one of the UAIDs (unconventional alternative intersection designs), DLTs (displaced left-turn crossovers) have been presented to mitigate traffic congestion. Although, qualitatively and quantitatively isolated UAIDs outperform their conventional counterparts, there is no simplified procedure to consider the DLTs coordination. Hence, this research investigates the coordination of consecutive DLTs under heterogeneous traffic conditions. To achieve the optimal coordination and provide an efficient coordination control, a bandwidth maximization progression approach was used. Seeking the optimal offset for each pair of consecutive intersections to guarantee the green bandwidth waves along the coordinated corridor, a mixed-integer linear program was adopted. The optimization problem was formulated and solved based on the standard branch-and-bound technique. As a real-world study case, data of three typical intersections located in an arterial corridor in Cairo, Egypt was used. PTV-VISSIM as a microsimulation platform was employed to simulate and evaluate the different signal timing plans. However, to represent the heterogeneous traffic characteristics as close as possible to the reality, different simulation parameters were tuned and validated carefully. The results emphasized the undoubted improvement of coordinated DLTs by different operational performance indices. The total travel time, average delay, the number of stops per vehicle were obviously improved.","PeriodicalId":62390,"journal":{"name":"交通与运输工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42854601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Theoretical Propulsion System for Fuel Cell Vehicles with Infinite Cruising Range 无限续航燃料电池汽车理论推进系统
Pub Date : 2018-08-28 DOI: 10.17265/2328-2142/2018.04.002
Katsutoshi Ono
: The realization of a clean automobile society would require electrically-powered propulsion systems in vehicles. In recent years, electric vehicles have attracted considerable attention from the perspective of utilizing electricity generated from natural sources, such as solar and wind power. The propulsion method considered in the present investigation differs from the conventional off-board energy scheme in a manner such that pure stoichiometric H 2/ O 2 fuels for fuel cells are generated on-board during vehicle operation. In this method, energy conversion occurs by means of ESI-PSE (electrostatic-induction potential-superposed electrolysis). If a quasi-static process is assumed, the theoretical power requirement to produce pure stoichiometric H 2/ O 2 fuels is only 17% of the total energy required owing to a new method for supplying power to the EC (electrolytic cell). If an ESI-PSE EC is combined with a fuel cell (FC) to form an energy cycle, a HREG (hydrogen redox electric power generator) that uses solid PEMs (polymer electrolyte membranes) for the EC as well as the FC can be realized. According to calculations based on data from the operational conditions of commercially available ECs and FCs, more than 70% of the power delivered from the FC can be extracted for driving a motor constantly while a car is in motion. Because of energy self-sustainability on the HREG side, the power control system should not have any power loss. This propulsion system will realize tough vehicles that can continue running at a top speed at long unlimited cruising range.
{"title":"Theoretical Propulsion System for Fuel Cell Vehicles with Infinite Cruising Range","authors":"Katsutoshi Ono","doi":"10.17265/2328-2142/2018.04.002","DOIUrl":"https://doi.org/10.17265/2328-2142/2018.04.002","url":null,"abstract":": The realization of a clean automobile society would require electrically-powered propulsion systems in vehicles. In recent years, electric vehicles have attracted considerable attention from the perspective of utilizing electricity generated from natural sources, such as solar and wind power. The propulsion method considered in the present investigation differs from the conventional off-board energy scheme in a manner such that pure stoichiometric H 2/ O 2 fuels for fuel cells are generated on-board during vehicle operation. In this method, energy conversion occurs by means of ESI-PSE (electrostatic-induction potential-superposed electrolysis). If a quasi-static process is assumed, the theoretical power requirement to produce pure stoichiometric H 2/ O 2 fuels is only 17% of the total energy required owing to a new method for supplying power to the EC (electrolytic cell). If an ESI-PSE EC is combined with a fuel cell (FC) to form an energy cycle, a HREG (hydrogen redox electric power generator) that uses solid PEMs (polymer electrolyte membranes) for the EC as well as the FC can be realized. According to calculations based on data from the operational conditions of commercially available ECs and FCs, more than 70% of the power delivered from the FC can be extracted for driving a motor constantly while a car is in motion. Because of energy self-sustainability on the HREG side, the power control system should not have any power loss. This propulsion system will realize tough vehicles that can continue running at a top speed at long unlimited cruising range.","PeriodicalId":62390,"journal":{"name":"交通与运输工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43131432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Developing a Model for Assessment of Traffic Distraction 建立交通干扰评估模型
Pub Date : 2018-08-17 DOI: 10.11648/j.ajtte.20180303.12
M. Suhanek, Ivan Djurek, S. Grubeša, A. Petošić
The soundscape of an expressway in Zagreb was recorded and reproduced to two groups of listeners while they were performing a concentration demanding task – a simplified variation of the memory game. This expressway was chosen due to the high traffic frequency and on the other hand, due to the large number of residential buildings that are near the expressway. The focus of the research is whether the residents of a large city, in their daily life have adapted to this noise and how. We also wanted to investigate what is the main reason of their annoyance and distraction. Furthermore, we wanted to quantify human distraction with this typical urban soundscape by developing and then using the acoustic model for total distraction level.
研究人员将萨格勒布一条高速公路上的音景录制下来,并将其播放给两组听众,让他们在执行一项要求集中注意力的任务——一种简化版的记忆游戏。选择这条高速公路,一方面是因为交通频率高,另一方面是因为高速公路附近有大量的住宅建筑。研究的重点是大城市的居民在日常生活中是否已经适应了这种噪音,以及如何适应。我们还想调查他们烦恼和分心的主要原因是什么。此外,我们想通过开发和使用总分心水平的声学模型来量化人类在这个典型城市声景中的分心程度。
{"title":"Developing a Model for Assessment of Traffic Distraction","authors":"M. Suhanek, Ivan Djurek, S. Grubeša, A. Petošić","doi":"10.11648/j.ajtte.20180303.12","DOIUrl":"https://doi.org/10.11648/j.ajtte.20180303.12","url":null,"abstract":"The soundscape of an expressway in Zagreb was recorded and reproduced to two groups of listeners while they were performing a concentration demanding task – a simplified variation of the memory game. This expressway was chosen due to the high traffic frequency and on the other hand, due to the large number of residential buildings that are near the expressway. The focus of the research is whether the residents of a large city, in their daily life have adapted to this noise and how. We also wanted to investigate what is the main reason of their annoyance and distraction. Furthermore, we wanted to quantify human distraction with this typical urban soundscape by developing and then using the acoustic model for total distraction level.","PeriodicalId":62390,"journal":{"name":"交通与运输工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48773545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
交通与运输工程:英文版
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1