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UaaS App – University as a Service App: exploring the acceptability of a MaaS-like concept for a University community UaaS App -大学即服务App:探索大学社区中类似maas概念的可接受性
IF 0.7 Q2 Engineering Pub Date : 2023-02-01 DOI: 10.48295/et.2023.90.2
M. Le Pira
This paper introduces the concept of UaaS App, i.e. “University as a Service” App, based on the well-known Mobility as a Service (MaaS) concept, and explores the acceptability and willingness to use a digital application capable of providing transport (and other) services offered to a university community. The case study is the University of Catania (Italy), with about 40,000 students and 2500 employees. An online survey was conducted to analyse potential user mobility habits, propensity and preferences towards different services proposed by the app. A Multiple Correspondence Analysis was also performed to find clusters and correlations among variables and derive useful information on the target users of a MaaS-like service for a University community. Results show a general interest but also highlight some weaknesses that should be addressed to improve the efficiency of the services offered by a MaaS-like application.
本文基于著名的移动即服务(MaaS)概念,介绍了UaaS应用程序的概念,即“大学即服务”应用程序,并探讨了使用能够为大学社区提供运输(和其他)服务的数字应用程序的可接受性和意愿。以卡塔尼亚大学(意大利)为例,该大学约有4万名学生和2500名员工。进行了一项在线调查,以分析潜在用户的移动习惯、倾向和对应用程序提出的不同服务的偏好。还进行了多重对应分析,以发现变量之间的集群和相关性,并获得大学社区类似maas服务的目标用户的有用信息。结果显示了普遍的兴趣,但也突出了一些弱点,应该解决这些弱点,以提高由类似maas的应用程序提供的服务的效率。
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引用次数: 1
Methods for infrastructure planning in areas close to hospitals at the regional level 区域一级医院附近地区的基础设施规划方法
IF 0.7 Q2 Engineering Pub Date : 2023-02-01 DOI: 10.48295/et.2023.91.9
V. Ranieri
Healthcare emergency management is also an infrastructure problem, in terms of accessibility and safety but nowadays there is lack of consolidated method to solve this issue. Concerning accessibility, the access to the nearest hospital should be guaranteed from each city in the region in an acceptable time. Concerning safety, road arterials travelled by emergency vehicles should have high safety standards, for emergency vehicles and the reduction of congestion due to traffic crashes. This study aims at providing a methodological framework (tested in the case of Apulia, Italy) to conduct accessibility and safety assessments at the regional level, in case of existing and new hospitals. Accessibility and safety were studied setting specific metrics, like time to reach the hospital and accident analysis at macroscopic level to plan safety interventions. The least safe road sites in the ranking obtained by applying the proposed indicators for new and existing hospitals can be improved.
在可及性和安全性方面,医疗应急管理也是一个基础设施问题,但目前缺乏统一的方法来解决这一问题。关于可达性,应保证在可接受的时间内从该地区的每个城市前往最近的医院。在安全方面,紧急车辆行驶的道路要道应具有较高的安全标准,对紧急车辆和减少交通事故造成的拥堵。这项研究的目的是提供一个方法学框架(在意大利普利亚进行了试验),以便在区域一级对现有医院和新医院进行无障碍和安全评估。研究可达性和安全性,设定具体指标,如到达医院的时间和宏观层面的事故分析,以规划安全干预措施。应用拟议的新医院和现有医院指标获得的排名中最不安全的道路站点可以改进。
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引用次数: 1
Preliminary technical and economic analysis of a hyperloop line: case study from Italy 超级高铁线路的初步技术和经济分析:来自意大利的案例研究
IF 0.7 Q2 Engineering Pub Date : 2023-02-01 DOI: 10.48295/et.2023.90.7
F. Borghetti
The future of mobility and transportation infrastructures has been heavily questioned during the last years. Today we are looking at how the mobility of people and goods will evolve in the coming years. With reference to this topic, Hyperloop has been at the core of the debate. Scientists and engineers believe that this technology is a great opportunity for the modern society. Nonetheless, it still presents several unsolved issues. The purpose of this work is to propose a methodology to perform technical and economic pre-feasibility studies related to the hyperloop system, with specific focus on transport demand analysis, transport sizing of the infrastructure and cost analysis of CAPEX - CAPital EXpenditure and OPEX - OPerating EXpense. For the evaluation of the potential demand, the paper refers to the Multinomial Logit model, calibrated through SP – Stated Preferences surveys. Once the Logit model has been calibrated, it is possible to envisage different scenarios, such as maximum transport demand or maximum revenue, which will be used for the subsequent design of the transport system. As far as the sizing is concerned, some technical parameters of the project are required, such as: length of the route, maximum speed, and acceleration. The combination of the scenarios defined through the calibration of the Logit model and the project parameters, allows to define several scenarios representing the potential performances of the analyzed system. Given the possible performances of the transport service, an analysis of costs and potential revenues that determines the most efficient solution can be carried out. In addition, parametric values per km can be used to define CAPEX and OPEX. The methodology illustrated above, has been applied to a case study in Italy of the Rome-Milan OD (Origin – Destination), as it is one of the national routes with the highest volume of traffic and the largest number of modal choices.
在过去的几年里,交通和运输基础设施的未来受到了严重的质疑。今天,我们将探讨未来几年人员和货物的流动性将如何演变。关于这个话题,超级高铁一直是争论的核心。科学家和工程师认为这项技术是现代社会的一大机遇。尽管如此,它仍然存在一些未解决的问题。这项工作的目的是提出一种方法来执行与超级高铁系统相关的技术和经济预可行性研究,特别关注运输需求分析、基础设施的运输规模以及CAPEX(资本支出)和OPEX(运营费用)的成本分析。对于潜在需求的评估,本文参考了多项Logit模型,通过SP -陈述偏好调查校准。一旦对Logit模型进行了校准,就可以设想不同的情景,例如最大运输需求或最大收入,这些将用于运输系统的后续设计。在尺寸方面,需要项目的一些技术参数,如:路线长度,最大速度,加速度。通过校准Logit模型和项目参数定义的场景相结合,可以定义代表所分析系统潜在性能的几个场景。考虑到运输服务的可能表现,可以对成本和潜在收入进行分析,以确定最有效的解决方案。此外,每公里的参数值可用于定义CAPEX和OPEX。上述方法已应用于意大利罗马-米兰OD(起点-目的地)的案例研究,因为它是交通量最高、模式选择最多的国家路线之一。
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引用次数: 0
Improved port gate procedures for a better port-city relation 改进口岸手续,改善港城关系
IF 0.7 Q2 Engineering Pub Date : 2023-02-01 DOI: 10.48295/et.2023.90.8
Marina Zanne
Road congestion caused by port activities is a well-known problem that is often highlighted by local communities as one of the main negative issues related to port operations. Studies also show that road congestion can affect the competitive position of ports. The problem can be tackled in a number of ways. The paper is divided into two parts. In the first part of the paper, the authors analyse the literature on the effectiveness of various procedures and upgrades at the port gates that can improve the gate turnaround times. The second part is a case study. In the second part of the paper, the authors quantify the current negative impacts of port-related road congestion and the benefits of introducing selected measures at the gates of the port of Koper. Isolation of single best measure is impossible due to simultaneous introduction of measures.
港口活动造成的道路拥堵是一个众所周知的问题,也是当地社区经常强调的与港口运营相关的主要负面问题之一。研究还表明,道路拥堵会影响港口的竞争地位。这个问题可以用许多方法来解决。本文分为两部分。在本文的第一部分中,作者分析了有关港口闸门各种程序和升级的有效性的文献,这些程序和升级可以改善闸门周转时间。第二部分是案例分析。在论文的第二部分,作者量化了目前与港口相关的道路拥堵的负面影响,以及在科佩尔港的大门引入选定措施的好处。由于同时采取措施,不可能隔离单一的最佳措施。
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引用次数: 0
How young pedestrians perceive walkways: gender differences 年轻行人如何看待人行道:性别差异
IF 0.7 Q2 Engineering Pub Date : 2023-02-01 DOI: 10.48295/et.2023.90.4
L. Eboli
Promotion of active mobility is a strategy to discourage motorized mobility and solve problems linked to environment protection. Particularly, walking could be considered as an alternative to short trips made by car in more densely inhabited areas. For promoting pedestrian mobility, the quality levels of pedestrian paths should be increased. At this regard, collecting pedestrians’ perceptions about the path characteristics is fundamental. In this paper, perceptions are collected in terms of Stated Preferences (SP) by detecting the choices pedestrians would make in hypothetical scenarios characterized by certain service quality levels. More specifically, this work aims to analyze pedestrian preferences by highlighting gender differences through discrete choice modelling. An SP survey was addressed to a sample of 240 Italian university students, and mixed logit models were calibrated. The results highlight how women and men perceive differently some walkway characteristics
促进主动出行是一种抑制机动出行和解决与环境保护有关的问题的策略。特别是,在人口更密集的地区,步行可以作为驾车短途旅行的替代选择。为促进行人的流动,应提高行人径的质素水平。在这方面,收集行人对路径特征的感知是基础。在本文中,通过检测行人在具有一定服务质量水平的假设场景中可能做出的选择,以陈述偏好(SP)的方式收集感知。更具体地说,这项工作旨在通过离散选择模型强调性别差异来分析行人的偏好。对240名意大利大学生进行了SP调查,并对混合logit模型进行了校准。研究结果强调了女性和男性对某些人行道特征的不同看法
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引用次数: 2
Bridge’s vehicular loads characterization through Weight-In-Motion (WIM) systems. The case study of Brescia 基于动态称重(WIM)系统的桥梁车辆荷载表征。布雷西亚的案例研究
IF 0.7 Q2 Engineering Pub Date : 2023-02-01 DOI: 10.48295/et.2023.90.6
Robert Ventura
The growing traffic flow and the increase in transported masses negatively affect infrastructural safety. Several authors have characterized traffic loads on bridges in the American and Chinese context using Weigh-in-Motion (WIM) systems. Conversely, very few studies have been carried out in Europe and, as far as the authors know, none in Italy. This study covers this gap by providing a statistical analysis of raw WIM data collected on a main bridge near the city of Brescia (Italy). First, the traffic flow and the characteristics of vehicles were gathered by a WIM device. Second, some descriptive statistics were performed by computing the probabilistic distributions of numerous vehicular attributes. Third, as a novelty element, a K-means based Clustering technique was adopted on a wide set of vehicular features to detect heavy vehicle clusters. The results showed the existence of three main clusters: two predominately composed by lightly overloaded ordinary vehicles and construction machinery, respectively, and one by mass exceptional vehicles. This study considers a broader set of vehicular parameters than previous ones and then, provides a deeper understanding. Moreover, it shows that axle mass limits violations are noteworthy among mass exceptional vehicles in Italy highlighting the need of improving weight enforcement. These knowledges will be crucial for a rational organisation of the existing assets.
交通流量的增加和运输量的增加对基础设施的安全产生了负面影响。几位作者使用动态称重(WIM)系统对美国和中国的桥梁交通负荷进行了表征。相反,在欧洲进行的研究很少,据作者所知,在意大利也没有。本研究通过对布雷西亚市(意大利)附近主桥上收集的原始WIM数据进行统计分析,弥补了这一差距。首先,通过WIM设备采集交通流和车辆特征;其次,通过计算多个车辆属性的概率分布进行描述性统计;第三,作为新颖元素,采用基于k均值的聚类技术对大量车辆特征进行聚类检测。结果表明,存在三个主要集群:两个集群分别以轻度超载的普通车辆和工程机械为主,一个集群以大规模超限车辆为主。这项研究考虑了比以往更广泛的车辆参数集,从而提供了更深入的理解。此外,它表明,在意大利的质量特殊车辆中,轴质量限制违规是值得注意的,这突出了改进重量执行的必要性。这些知识对于合理组织现有资产至关重要。
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引用次数: 0
Performance simulation of hydrogen-electric transit bus running in a mountain environment 山地环境下氢动力公交客车运行性能仿真
IF 0.7 Q2 Engineering Pub Date : 2023-02-01 DOI: 10.48295/et.2023.90.9
F. Ciancetta
As is well known, the transport sector accounts for a third of all final energy consumption in the EU and is responsible for more than a quarter of total greenhouse gas emissions, making it one of the main contributors to climate change. Reducing the negative effects of transport is a strategic objective of the EU, which has put in place a series of actions to promote cleaner and more efficient transport modes, using more sustainable technologies, fuels, and infrastructure. The development of more sustainable and zero-emission collective transport solutions implies the use of novel propulsion systems capable of using energy carriers produced from renewable energy sources. This article deals with the preliminary design and performance analysis of a hydrogen hybrid passenger bus to be used in a mountainous area characterized by mainly curvilinear routes with high gradients both uphill and downhill, within an experimental context of technological-energy innovation. The study is part of a wider project (LIFE3H) co-funded by the European Union, which, among other objectives, intends to lay the bases for the development of a Hydrogen Valley (integrated hydrogen production, storage, and use site), through public hydrogen transport and refuelling stations in the mountain area of “Altopiano delle Rocche” in Abruzzo (Italy). The studied vehicle power-train configuration is based on an electric motor fed by a hybrid power unit consisting of a hydrogen fuel cell functionally coupled with an electrochemical battery. A minibus configuration run over a round trip path according to the real traffic conditions is simulated and main vehicle powertrain components are sized. Finally, hydrogen consumption for traction is estimated.
众所周知,运输部门占欧盟最终能源消耗的三分之一,温室气体排放总量的四分之一以上,是气候变化的主要贡献者之一。减少交通的负面影响是欧盟的一项战略目标,欧盟已经采取了一系列行动,促进更清洁、更高效的交通方式,使用更可持续的技术、燃料和基础设施。发展更可持续和零排放的集体运输解决方案意味着使用能够使用可再生能源生产的能源载体的新型推进系统。本文在技术-能源创新的实验背景下,讨论了一种氢混合动力客车的初步设计和性能分析,该客车将用于以高坡度的曲线路线为主的山区。该研究是欧盟共同资助的一个更广泛的项目(LIFE3H)的一部分,该项目除其他目标外,旨在通过意大利阿布鲁佐(Abruzzo)“Altopiano delle Rocche”山区的公共氢运输和加氢站,为氢谷(综合氢生产、储存和使用地点)的发展奠定基础。所研究的车辆动力系统配置基于由氢燃料电池和电化学电池组成的混合动力单元提供的电动机。根据实际交通条件,模拟了在往返路径上运行的小巴配置,并对车辆主要动力总成部件进行了尺寸计算。最后,对牵引用氢的消耗量进行了估算。
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引用次数: 0
Heritage BIM Approach for roman pavements 罗马路面的传统BIM方法
IF 0.7 Q2 Engineering Pub Date : 2023-02-01 DOI: 10.48295/et.2023.91.8
S. A. Biancardo
The growing necessity to design and digitally representation of historical pavements has led the specialists to use different Building Information Modelling (BIM) tools to control the road design and construction phases. In this research paper, a Heritage BIM (H-BIM) approach was developed to recreate an archaeological road to accomplish the disruption analysis of stone pavements. In detail, within Autodesk Infraworks the conceptual model of the road and the digital terrain model (DTM) was generated; then the road corridor design process was performed within Autodesk Civil 3D using a parametric road section which was created by means of Subassembly composer, a Civil 3D extension. Subsequently, a visual programming application, Dynamo, based on Python language, was adopted to extract and update corridor information. In detail, a workflow was developed to implement a disruption analysis of road stone pavements and the output of the calculation were inserted in the model. As preliminary results, a tool is proposed to support the authorities and experts during the managing processes.
设计和数字化再现历史路面的需求日益增长,这促使专家们使用不同的建筑信息模型(BIM)工具来控制道路设计和施工阶段。在这篇研究论文中,我们开发了一种遗产BIM (H-BIM)方法来重建一条考古道路,以完成石头路面的破坏分析。具体而言,在Autodesk基础设施中生成了道路的概念模型和数字地形模型(DTM);然后在Autodesk Civil 3D中使用参数化道路部分进行道路走廊设计过程,该部分由Subassembly composer (Civil 3D扩展)创建。随后,采用基于Python语言的可视化编程应用Dynamo对廊道信息进行提取和更新。详细地说,开发了一个工作流来实现道路石料路面的中断分析,并将计算结果插入到模型中。作为初步结果,建议使用一种工具在管理过程中为当局和专家提供支持。
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引用次数: 0
Walkability to public transport: prioritization of parameters for walkability assessment in the urban areas of Kerala, India 公共交通的可步行性:印度喀拉拉邦城市地区可步行性评估参数的优先顺序
IF 0.7 Q2 Engineering Pub Date : 2022-12-01 DOI: 10.48295/et.2022.89.3
Rajina Rahiman V.
Walkability research is multi-disciplinary and is spread across numerous domains starting from public health to sustainable transportation. Walkability is gaining interest as a non-motorised mode of transportation, and walking to public transport is deemed necessary for sustainable cities. This study intends to select, rank, and prioritise parameters of 'walkability to public transport' for urban areas of Kerala, a southern state in India. Upon a basic framework of walkability parameters obtained after the literature review, the Delphi Method was used to elicit and select the most significant walkability parameters from various domains, including transportation, planning, and urban design. Analytical Hierarchy Process was used to weigh the relative significance of parameters and sub-parameters. The study found that 'Immediate Walking Environment' was top priority, and 'Urban Design Qualities' was ranked least. The methodology will guide future researchers to pursue walkability studies in other cities by adopting this methodology with contextual variations if needed.
可步行性研究是多学科的,涉及从公共卫生到可持续交通等众多领域。作为一种非机动的交通方式,步行出行正受到越来越多的关注,对于可持续发展的城市来说,步行前往公共交通工具是必要的。本研究旨在为印度南部喀拉拉邦的城市地区选择、排序和优先考虑“公共交通步行性”参数。基于文献综述得出的步行参数基本框架,采用德尔菲法从交通、规划和城市设计等各个领域提取并选择最显著的步行参数。采用层次分析法对参数和子参数的相对重要性进行加权。研究发现,“直接步行环境”是最重要的,而“城市设计品质”排名最低。该方法将指导未来的研究人员在其他城市进行可步行性研究,如果需要的话,可以采用这种方法并结合环境变化。
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引用次数: 0
Indian Management Students’ Electric Car Purchase Intention 印度管理专业学生电动车购买意向
IF 0.7 Q2 Engineering Pub Date : 2022-12-01 DOI: 10.48295/et.2022.89.7
V. Pailwar
This study uses structural equation modeling to understand the purchase intention of postgraduate management students who are expected to be early adopters of electric cars (e-cars). Based on the sample of 436 students from India, the results indicate that environmental concern is the most important factor influencing purchase intention. However, the students also prefer an automotive design and value social norms. The study also identifies that government policy influences purchase intention through the mediation of charging and driving convenience. These findings imply that the government's adoption of electric vehicle policy might boost the production of and demand for e-cars in the country. Furthermore, producers can gain a competitive edge by addressing driving convenience, charging convenience, and vehicle design, and by highlighting the environmental benefits of e-cars.
本研究采用结构方程模型来了解管理学研究生对电动汽车(e-cars)的购买意愿。基于436名印度学生的样本,结果表明环境关注是影响购买意愿的最重要因素。然而,学生也更喜欢汽车设计和重视社会规范。研究还发现,政府政策通过收费和驾驶便利的中介影响购买意愿。这些发现表明,政府采取的电动汽车政策可能会促进该国电动汽车的生产和需求。此外,生产商可以通过解决驾驶便利性、充电便利性、车辆设计以及强调电动汽车的环境效益来获得竞争优势。
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引用次数: 0
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European Transport-Trasporti Europei
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