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SUSTAINABLE AIRPORT ENERGY MANAGEMENT: THE CASE OF KANSAI INTERNATIONAL AIRPORT 可持续机场能源管理:以关西国际机场为例
Pub Date : 2018-06-01 DOI: 10.7708/ijtte.2018.8(3).07
Glenn Baxter, P. Srisaeng, G. Wild
Airports play a vital role in the global air transport industry facilitating the interchange between the air and surface transport modes. The growth in passenger and air cargo traffic has resulted in increased energy requirements that airports need to satisfy. Airports are extremely energy intensive. To mitigate the environmental impact from energy consumption, airports have introduced a wide range of energy saving measures. Using a longitudinal case study research design, this study examines Osaka’s Kansai International Airport sustainable energy management, energy sources, energy consumption and the methods and technologies that have been implemented to mitigate the environmental impact of energy at the airport. The study period was from 2002 until 2015. The qualitative data was examined by document analysis. Electricity, natural gas, hydrogen and wind power are the airports principal energy sources. Despite the growth in passengers and aircraft movements, the airport has been able to reduce its energy consumption. Energy-saving initiatives including the use of hydrogen, solar, and wind power, fixed electrical ground power for aircraft, widespread use of LED lighting, more efficient use of air conditioning systems and ceiling fans, and the use of low emission vehicles.
机场在全球航空运输业中发挥着至关重要的作用,促进了空中和地面运输方式的交流。旅客和航空货运量的增长导致机场需要满足的能源需求增加。机场是能源密集的地方。为了减轻能源消耗对环境的影响,机场采取了一系列节能措施。本研究采用纵向案例研究设计,考察了大阪关西国际机场的可持续能源管理、能源来源、能源消耗以及为减轻机场能源对环境的影响而实施的方法和技术。研究时间为2002年至2015年。采用文献分析对定性资料进行检验。电力、天然气、氢气和风能是机场的主要能源来源。尽管乘客和飞机起降量都在增长,但机场还是能够减少能源消耗。节能措施包括使用氢能、太阳能和风能,为飞机提供固定地面电源,广泛使用LED照明,更有效地使用空调系统和吊扇,以及使用低排放车辆。
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引用次数: 26
EVALUATION OF DELAY CHARACTERISTICS AT SIGNALIZED INTERSECTIONS FOR IMPROVEMENT IN LEVEL OF SERVICE 评价信号交叉口的延迟特性以提高服务水平
Pub Date : 2018-06-01 DOI: 10.7708/ijtte.2018.8(3).05
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引用次数: 2
WEB SURVEY DATA AND COMMUTER MODE CHOICE ANALYSIS USING ARTIFICIAL NEURAL NETWORK 利用人工神经网络对网络调查数据和通勤方式选择进行分析
Pub Date : 2018-06-01 DOI: 10.7708/ijtte.2018.8(3).08
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引用次数: 8
FORKLIFT TRUCK SELECTION USING TOPSIS METHOD 叉车选用topsis法
Pub Date : 2018-06-01 DOI: 10.7708/ijtte.2018.8(3).10
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引用次数: 10
A STUDY OF GPS POSITIONING ERROR ASSOCIATED WITH TROPOSPHERIC DELAY DURING NUMA MEDITERRANEAN CYCLONE 地中海气旋numa期间与对流层延迟相关的GPS定位误差研究
Pub Date : 2018-06-01 DOI: 10.7708/ijtte.2018.8(3).03
Ivana Rumora, O. Jukic, M. Filic, R. Filjar
The adverse and rapidly changing weather conditions during a Mediterranean cyclone (medicane) pose a serious threat to maritime navigation in general. Additionally, failure in correction for GNSS signal tropospheric delay was supposed to significantly degrade the quality of GNSS-based position estimation. Here we present the study results aimed at determination of GPS positioning performance quality and GPS tropospheric error based on experimental observation during the November 2017 medicane. We found identifiable degradation of GPS positioning performance due to medicane-caused tropospheric delay, and propose corrective actions aimed at maintaining GPS positioning performance resilience for several classes of GNSS maritime applications.
在地中海气旋(medicane)期间,不利和迅速变化的天气条件一般对海上航行构成严重威胁。此外,GNSS信号对流层延迟校正失败会显著降低基于GNSS的位置估计质量。本文介绍了基于2017年11月医学观测的GPS定位性能质量和GPS对流层误差的研究结果。我们发现由于药物引起的对流层延迟导致GPS定位性能明显下降,并提出了针对几种GNSS海事应用保持GPS定位性能弹性的纠正措施。
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引用次数: 4
IDENTIFICATION OF ROAD CRASH BLACK-SITES USING GEOGRAPHICAL INFORMATION SYSTEM 利用地理信息系统识别道路交通事故黑点
Pub Date : 2017-08-12 DOI: 10.7708/ijtte.2017.7(3).07
R. Shad, S. Rahimi
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引用次数: 6
Air Transport Competition Challenges 航空运输竞争挑战
Pub Date : 2017-06-25 DOI: 10.7708/IJTTE.2017.7(2).01
Ružica Škurla Babić, Mirko Tatalović, Jasmin Bajić
Increased competition within global airline industry initiates consolidation activities on entering into different modes of cooperative arrangements including, franchising, code share agreements, alliances, mergers and acquisitions. Selecting the optimal business model means implementation of sustainable competitive strategy as one of the key airline business challenges. Characteristics and trends in airline competition worldwide were analyzed by using correlation and regression metrics. European air transport competition analyzes include specific Southeast Europe topics. The liberalization of the Croatian air transport market has significantly affected the increase in demand in the international scheduled passenger traffic from the year 2004. Air transport in Croatia is growing much faster compare to the maritime and land transport sectors. A significant structural change in the aviation market due to the strong increase of low-cost carriers share in international scheduled traffic occurs. At the same time, the share of domestic scheduled and charter transportation is stagnating. Croatia Airlines in restructuring process provided in the period 2011 2015 recognized necessity to justify market position through optimal network strategy.
全球航空业的竞争日益激烈,促使航空公司开展整合活动,采取不同模式的合作安排,包括特许经营、代码共享协议、联盟、合并和收购。选择最优的商业模式意味着实施可持续的竞争战略,这是航空公司面临的主要业务挑战之一。运用相关和回归方法分析了全球航空公司竞争的特点和趋势。欧洲航空运输竞争分析包括具体的东南欧主题。克罗地亚航空运输市场的自由化对2004年以来国际定期客运需求的增加产生了重大影响。克罗地亚的航空运输比海运和陆运部门增长得快得多。由于低成本航空公司在国际定期航班中所占份额的强劲增长,航空市场发生了重大的结构性变化。与此同时,国内定期和包机运输的份额停滞不前。克罗地亚航空公司在2011年至2015年期间提供的重组过程中认识到通过优化网络战略来证明市场地位的必要性。
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引用次数: 10
Proposed Integrated Bicycle Feeder Mode Service Analysis for Bus Rapid Transit System--A Multinomial Logit Model Approach 快速公交系统综合馈线模式服务分析——一种多项式Logit模型方法
Pub Date : 2017-03-19 DOI: 10.7708/ijtte.2017.7(1).08
M. I. Balya, Rakesh Kumar
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引用次数: 2
DEVELOPMENT OF CONGESTION CAUSAL PIE CHARTS FOR ARTERIAL ROADWAYS 主干道拥堵因果饼状图的建立
Pub Date : 2017-03-19 DOI: 10.7708/IJTTE.2017.7(1).09
Ali Soltani-Sobh, Marija Ostojic, A. Stevanovic, Jiaqi Ma, David K. Hale
Urban congestion is being increased by a rapid growth in travel demand and a limited ability to expand physical infrastructure. If transportation agencies could accurately quantify the impacts of various congestion causes, they would be able to prioritize their strategies more efficiently. The Federal Highway Administration developed a well-known congestion causal pie chart in 2004, but this development process did not have extensive access to field data. Recent advancements in both traffic measurement technologies and data-driven analysis are making it possible to quantify congestion impacts more accurately. However, an assessment of congestion causes on signalized arterials presents many challenges, due to complexity of the required data and the interaction of traffic demand and control. The objective of this study is to create congestion pie charts which demonstrate the proportion of average experienced delay components on arterial corridors. A multivariate linear regression model of observed delay is used to demonstrate contributing factors to arterial street congestion. The methodology is explained using a section of Broward Boulevard in Fort Lauderdale, FL. The findings from the model demonstrate that a considerable part of arterial congestion can be attributed to travel demands and intersection signals.
由于旅行需求的迅速增长和扩大有形基础设施的能力有限,城市拥堵正在加剧。如果交通运输机构能够准确地量化各种拥堵原因的影响,他们将能够更有效地优先考虑他们的策略。2004年,美国联邦公路管理局(Federal Highway Administration)开发了一份著名的交通拥堵因果饼状图,但这一开发过程并没有广泛的实地数据。交通测量技术和数据驱动分析的最新进展使更准确地量化拥堵影响成为可能。然而,由于所需数据的复杂性以及交通需求和控制的相互作用,对信号动脉上的拥堵原因进行评估面临许多挑战。本研究的目的是创建拥堵饼状图,以显示动脉走廊上平均经历延误分量的比例。一个多元线性回归模型的观察延迟被用来证明贡献因素干道拥堵。该方法以佛罗里达州劳德代尔堡布劳沃德大道的一段为例进行了解释。该模型的结果表明,相当一部分动脉拥堵可归因于出行需求和十字路口信号。
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引用次数: 2
AUTOMATIC MULTIREGIME FUNDAMENTAL DIAGRAM CALIBRATION USING LIKELIHOOD ESTIMATION 使用似然估计的自动多机制基本图校准
Pub Date : 2017-03-19 DOI: 10.7708/IJTTE.2017.7(1).06
S. Barua, Nazmul Haque, Anik Das, Hadiuzzaman, Sanjana Hossain
LIMB (Likelihood Identification for Multi-regime models’ Breakpoint), a new tool, is developed to calibrate various Fundamental diagrams (FDs) under different road geometric and traffic operational conditions. This tool enables to estimate traffic state from real time data and is ready to implement into model based control strategy. Since efficient traffic management or control of transportation system remains big challenge due to the necessity of accurate traffic state estimation; model based control strategy incorporated with LIMB tool can ameliorate the complexity. This research found that the breakpoint of multi-regime FD models obtained from experience were not able to estimate traffic state precisely; therefore LIMB was used to calibrate those models. The investigation also endeavored to develop a guideline which was capable to calibrate suitable FD models for lanewise traffic conditions. Our proposed technique is independent of speed limits and completely automatic without any threshold inputs. Furthermore, it is comparable with the well-recognized FD automatic calibration technique. The comparative study found a 5% to 8% variation in estimating FD parameters. Later, we investigated several novel single and multiregime FD models utilizing field traffic data obtained from PeMS website. LIMB adopted likelihood estimation method to identify density at breakpoint in between free flow and congestion states for multi-regime models. It applies least square method to estimate critical density-free flow speed-capacity. The proposed interface is conducive and easily adaptable for transportation practitioners to select the best model based control strategy for smooth and efficient traffic operation.
该文提出了一种新的工具LIMB (Likelihood Identification for Multi-regime models’Breakpoint),用于标定不同道路几何和交通运行条件下的各种基本图(fd)。该工具能够从实时数据中估计交通状态,并准备实现基于模型的控制策略。由于需要对交通状态进行准确的估计,对交通系统进行有效的交通管理或控制是一个巨大的挑战;结合LIMB工具的基于模型的控制策略可以改善控制的复杂性。研究发现,根据经验得到的多状态FD模型的断点不能准确估计交通状态;因此,使用LIMB来校准这些模型。调查亦致力制订指引,以校正适合车道交通情况的FD模型。我们提出的技术是独立于速度限制和完全自动没有任何阈值输入。此外,它与公认的FD自动校准技术具有可比性。对比研究发现,FD参数的估计有5%到8%的差异。随后,我们利用从PeMS网站获得的现场交通数据研究了几种新的单区和多区FD模型。对于多状态模型,LIMB采用似然估计方法识别自由流和拥堵状态之间的断点密度。采用最小二乘法估计临界无密度流速度-容量。该接口便于交通从业者选择最优的基于模型的控制策略,以实现交通的平稳高效运行。
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引用次数: 4
期刊
International Journal for Traffic and Transport Engineering
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