865 results on '"TRANSPORTATION SYSTEM"'
Search Results
2. Urban street network design and transport-related greenhouse gas emissions around the world
- Author
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Boeing, Geoff, Pilgram, Clemens, and Lu, Yougeng
- Subjects
street networks ,urban design ,urban form ,climate change ,co2 emissions ,greenhouse gas ,urban planning ,civil engineering ,transportation system ,urban geography ,infrastructure ,air pollution - Abstract
This study estimates the relationships between street network characteristics and transport-sector CO2 emissions across every urban area in the world and investigates whether they are the same across development levels and urban design paradigms. The prior literature has estimated relationships between street network design and transport emissions – including greenhouse gases implicated in climate change – primarily through case studies focusing on certain world regions or relatively small samples of cities, complicating generalizability and applicability for evidence-informed practice. Our worldwide study finds that straighter, more-connected, and less-overbuilt street networks are associated with lower transport emissions, all else equal. Importantly, these relationships vary across development levels and design paradigms – yet most prior literature reports findings from urban areas that are outliers by global standards. Planners need a better empirical base for evidence-informed practice in under-studied regions, particularly the rapidly urbanizing Global South.
- Published
- 2024
3. Policies and legislation enabling sustainable technologies in the public transport infrastructure in NEOM.
- Author
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Abdelhady, Mahmoud Abd elgawwad
- Subjects
URBAN transportation ,SUSTAINABILITY ,SUSTAINABLE transportation ,PUBLIC transit ,CITIES & towns - Abstract
In the context of rapidly urbanizing cities, integrating sustainable technologies into public transportation systems is important. This study examines the policies and legislative frameworks of NEOM and articulates their impact on the adoption and expansion of sustainable technologies within the public transport domain. The objective is to determine whether these regulatory mechanisms facilitate or impede NEOM's sustainability ambitions. The main finding is that NEOM's current legislative and policy framework presents notable challenges. The commitment to advancing sustainable technologies is clear, tension exists between the rigidity of traditional legislative approaches and the rapidly evolving nature of technological innovation. Our analysis suggests NEOM has considerable potential to reform its policies and measures. Recalibration would ensure compatibility with sustainable practices and drive the city's vision for a sustainable and technologically advanced public transportation system. The study recommendations highlight the need for flexible, innovation‐centric legal frameworks. A more adaptable legislative approach could inform NEOM to leverage sustainable technologies more effectively, ensuring an environmentally responsible public transportation system that serves its expanding user community. Furthermore, this research offers broader implications for other emerging smart cities, underscoring the essential relationship between policy, technology, and sustainability in shaping future‐ready urban transport systems. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Digital Twin Approach for Operation and Maintenance of Transportation System—Systematic Review.
- Author
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Werbińska-Wojciechowska, Sylwia, Giel, Robert, and Winiarska, Klaudia
- Subjects
- *
CONTAINERIZATION , *MARITIME shipping , *REAL-time computing , *INVENTORY control , *DIGITAL twins - Abstract
There is a growing need to implement modern technologies, such as digital twinning, to improve the efficiency of transport fleet maintenance processes and maintain company operational capacity at the required level. A comprehensive review of the existing literature is conducted to address this, offering an up-to-date analysis of relevant content in this field. The methodology employed is a systematic literature review using the Primo multi-search tool, adhering to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The selection criteria focused on English studies published between 2012 and 2024, resulting in 201 highly relevant papers. These papers were categorized into seven groups: (a) air transportation, (b) railway transportation, (c) land transportation (road), (d) in-house logistics, (e) water and intermodal transportation, (f) supply chain operation, and (g) other applications. A notable strength of this study is its use of diverse scientific databases facilitated by the multi-search tool. Additionally, a bibliometric analysis was performed, revealing the evolution of DT applications over the past decade and identifying key areas such as predictive maintenance, condition monitoring, and decision-making processes. This study highlights the varied levels of adoption across different transport sectors and underscores promising areas for future development, particularly in underrepresented domains like supply chains and water transport. Additionally, this paper identifies significant research gaps, including integration challenges, real-time data processing, and standardization needs. Future research directions are proposed, focusing on enhancing predictive diagnostics, automating maintenance processes, and optimizing inventory management. This study also outlines a framework for DT in transportation systems, detailing key components and functionalities essential for effective maintenance management. The findings provide a roadmap for future innovations and improvements in DT applications within the transportation industry. This study ends with conclusions and future research directions. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Comprehensive decision-making considerations in the transition to electrification transportation system in a developing country.
- Author
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Esmaeilion, Farbod, Soltani, M., Taklifi, Alireza, and Aliabadi, Abbas
- Subjects
- *
ENERGY industries , *ENERGY consumption , *FOSSIL fuels , *ENERGY storage , *AUTOMOBILE industry - Abstract
Introducing suitable alternatives to the existing fossil fuels can provide insightful aspects of the expected benefits. In the energy sector, the transportation system is one of the key contributors to fossil fuel consumption and greenhouse gas productions. To elaborate on the performance of each introduced alternative, two perspectives are considered; short-term and long-term evaluations. In the short outlook, the PROMETHEE method is used for evaluation. Six scenarios are introduced based on the technical, economic, social, and policy criteria and each scenario benefits from different weights. In this scheme, the impacts of evolutions in the battery applications in the vehicles are investigated. Based on the short-term study, CNG and gasoline are considered the best options for the fuels of vehicles in Iran by taking into consideration the current situation. By viewing the technical and economic criteria, it was concluded that the Li-Ion battery provides better performance in comparison with gasoline in the long run. By 2040, the number of EVs will reach 10% of the overall vehicle production. It is obtained that the benefits of the electrical vehicles' presence as the alternative to the internal combustion vehicles can provide growing interest in this outlook from 2.02 × 106 US$ in 2025 to 17.55 × 108 US$ in 2040. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
6. Comprehensive decision-making considerations in the transition to electrification transportation system in a developing country
- Author
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Farbod Esmaeilion, M. Soltani, Alireza Taklifi, and Abbas Aliabadi
- Subjects
Electrical vehicles ,Electrification transition ,Transportation system ,Energy storage systems ,Medicine ,Science - Abstract
Abstract Introducing suitable alternatives to the existing fossil fuels can provide insightful aspects of the expected benefits. In the energy sector, the transportation system is one of the key contributors to fossil fuel consumption and greenhouse gas productions. To elaborate on the performance of each introduced alternative, two perspectives are considered; short-term and long-term evaluations. In the short outlook, the PROMETHEE method is used for evaluation. Six scenarios are introduced based on the technical, economic, social, and policy criteria and each scenario benefits from different weights. In this scheme, the impacts of evolutions in the battery applications in the vehicles are investigated. Based on the short-term study, CNG and gasoline are considered the best options for the fuels of vehicles in Iran by taking into consideration the current situation. By viewing the technical and economic criteria, it was concluded that the Li-Ion battery provides better performance in comparison with gasoline in the long run. By 2040, the number of EVs will reach 10% of the overall vehicle production. It is obtained that the benefits of the electrical vehicles’ presence as the alternative to the internal combustion vehicles can provide growing interest in this outlook from 2.02 × 106 US$ in 2025 to 17.55 × 108 US$ in 2040.
- Published
- 2024
- Full Text
- View/download PDF
7. Evaluating the role of transportation system in community seismic resilience
- Author
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Kairui Feng, Cao Wang, and Quanwang Li
- Subjects
Community resilience ,Transportation system ,Earthquake ,Retrofit Strategy ,Disasters and engineering ,TA495 ,Cities. Urban geography ,GF125 - Abstract
The swift recuperation of communities following natural hazards heavily relies on the efficiency of transportation systems, facilitating the timely delivery of vital resources and manpower to reconstruction sites. This paper delves into the pivotal role of transportation systems in aiding the recovery of built environments, proposing an evaluative metric that correlates transportation capacity with the speed of post-earthquake recovery. Focusing on optimizing urban population capacity in the aftermath of earthquakes, the study comprehensively examines the impact of pre-earthquake measures such as enhancing building or bridge seismic performance on post-earthquake urban population capacity. The methodology is demonstrated through an analysis of Beijing’s transportation system, elucidating how enhancements to transportation infrastructure fortify the resilience of built environments. Additionally, the concept of a resource supply rate is introduced to gauge the level of logistical support available after an earthquake. This rate tends to decrease when transportation damage is significant or when the demands for repairs overwhelm available resources, indicating a need for retrofitting. Through sensitivity analysis, this study explores how investments in the built environment or logistical systems can increase the resource supply rate, thereby contributing to more resilient urban areas in the face of seismic challenges.
- Published
- 2024
- Full Text
- View/download PDF
8. A Causal Loop Diagram of Banyumas Tourism Projection with Transportation System Improvement.
- Author
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Arini, Ratih Windu, Hidayatuloh, Syarif, Ikasari, Diniary, Herdianto, Bachtiar, Putra, Firmansyah Isrofil, and Sari, Sarah Karenina
- Subjects
- *
TOURISM impact , *SUSTAINABLE transportation , *TOURIST attractions , *TOURISM , *GREEN infrastructure , *SYSTEM dynamics - Abstract
Banyumas is one of the famous tourist destinations in Central Java with its natural attractions. Tourism growth in Banyumas requires capable and sustainable transportation infrastructure. However, current policies and investments in Banyumas are inappropriate for developing transportation and tourism infrastructure that creates non-significant impact. Therefore, the development of tourism projection should consider environmental, social, economics, and technology interrelated in developing transportation and tourism infrastructure issues. The tourism supply chain has a unique structure that is different from typical supply chains with high complexity because many stakeholders are involved. This research aims to project Banyumas tourism development with the impact of transportation system improvement. This conceptual model was developed from literature reviews and other necessary sources, and then validated by experts. The conceptual model examines the relationship between variables involved in the tourism supply chain and transportation system in Banyumas that can be developed into a quantitative model using Causal Loop Diagram, an initial stage of system dynamics. This model used to analyze the behavior of visitor projection of the Banyumas tourism supply chain system in Indonesia. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
9. Study on multi-timescale operation of hydrogen-containing energy coupled with transportation system.
- Author
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Wang, Xingang, Yu, Zhiyong, Bian, Jiayu, and Yu, Jin
- Subjects
LATIN hypercube sampling ,PRICE maintenance ,OPERATING costs ,WIND power ,ELECTRICITY pricing - Abstract
With the widespread attention on hydrogen energy, the operation optimization of the coupling system of hydrogen energy and transportation has become a critical issue. Therefore, this study develops a hydrogen-containing energy transportation coupling system for the system collaborative operation framework, operation mode and equipment modelling of the system. Furthermore, a medium- to long-term operation optimization model and a short-term operation optimization model were constructed considering the differences in the operation of coupled systems at different timescales and operating costs as the objective function and power balance and system equipment as constraints. In the medium- and long-term operation optimization model, the planning scenario reduction method is used to reduce the wind power generation scenario. In the short-term operation optimization model, a multivariate uncertainty model is constructed to represent the uncertainty in the coupling system. Subsequently, the solution method of the model is proposed. Finally, a coupled system is simulated to verify the effectiveness of the model. (i) When the initial scene set is 600, the typical scene reduction method using Latin hypercube sampling and the Wasserstein distance can reduce operating costs by 7.60% and 9.49% compared with K-means reduction and K-media reduction methods. (ii) The sensitivity coefficients of hydrogen sales price, electricity sales price and maintenance rate to operating costs are –0.031%, –1.009% and 0.0105%, respectively. (iii) Considering multiple uncertainties can help make optimal decisions based on the overall consideration of disadvantage scenarios, thereby reducing system operating costs. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
10. International Comparative Analysis of Transport Modes in China and the United States
- Author
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Li, Moqi, Chan, Albert P. C., Series Editor, Hong, Wei-Chiang, Series Editor, Mellal, Mohamed Arezki, Series Editor, Narayanan, Ramadas, Series Editor, Nguyen, Quang Ngoc, Series Editor, Ong, Hwai Chyuan, Series Editor, Sachsenmeier, Peter, Series Editor, Sun, Zaicheng, Series Editor, Ullah, Sharif, Series Editor, Wu, Junwei, Series Editor, Zhang, Wei, Series Editor, Zhao, Gaofeng, editor, Satyanaga, Alfrendo, editor, Ramani, Sujatha Evangelin, editor, and Abdel Raheem, Shehata E., editor
- Published
- 2024
- Full Text
- View/download PDF
11. A Scenario Analysis of the Transportation System in Vietnam Based on Life Cycle Simulation
- Author
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Tanaka, Ryota, Kawaguchi, Taro, Murata, Hidenori, Kobayashi, Hideki, Fukushige, Shinichi, editor, Kobayashi, Hideki, editor, Yamasue, Eiji, editor, and Hara, Keishiro, editor
- Published
- 2024
- Full Text
- View/download PDF
12. Spatiotemporal and Intelligent Transportation Forecasting
- Author
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Maithili, K., Leelavathy, S., Karthi, G., Adimoolam, M., Han, Jiawei, Advisory Editor, Meng, Xiaofeng, Editor-in-Chief, Zeng, Daniel Dajun, Editorial Board Member, Kitsuregawa, Masaru, Advisory Editor, Jin, Hai, Editorial Board Member, Yu, Philip S., Advisory Editor, Wang, Haixun, Editorial Board Member, Liu, Huan, Editorial Board Member, Tan, Tieniu, Advisory Editor, Gao, Wen, Advisory Editor, Wang, X. Sean, Editorial Board Member, Meng, Weiyi, Editorial Board Member, A, John, editor, Abimannan, Satheesh, editor, El-Alfy, El-Sayed M., editor, and Chang, Yue-Shan, editor
- Published
- 2024
- Full Text
- View/download PDF
13. Employing Digital Twins in Operation and Maintenance Management of Transportation Systems
- Author
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Giel, Robert, Werbińska-Wojciechowska, Sylwia, Winiarska, Klaudia, Kacprzyk, Janusz, Series Editor, Prentkovskis, Olegas, Series Editor, Yatskiv (Jackiva), Irina, editor, Skačkauskas, Paulius, editor, Karpenko, Mykola, editor, and Stosiak, Michał, editor
- Published
- 2024
- Full Text
- View/download PDF
14. Life Cycle Assessment via Software Tools: Result Analysis in a Bicycle Study
- Author
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Montoya-Torres, Jacid, Akizu-Gardoki, Ortzi, Iturrondobeitia, Maider, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Manchado del Val, Cristina, editor, Suffo Pino, Miguel, editor, Miralbes Buil, Ramón, editor, Moreno Sánchez, Daniel, editor, and Moreno Nieto, Daniel, editor
- Published
- 2024
- Full Text
- View/download PDF
15. Transportation System Using Deep Learning Algorithms in Industry 4.0 Towards Society 5.0
- Author
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Sagar, Shrddha, Pradhan, Nilanjana, Poongodi, T., Chatterjee, Prasenjit, Series Editor, Awasthi, Anjali, Series Editor, Tiwari, Manoj Kumar, Series Editor, Chakraborty, Shankar, Series Editor, Yazdani, Morteza, Series Editor, Kumar, Avadhesh, editor, Sagar, Shrddha, editor, Thangamuthu, Poongodi, editor, and Balamurugan, B., editor
- Published
- 2024
- Full Text
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16. A new federated genetic algorithm-based optimization technique for multi-criteria vehicle route planning using ArcGIS network analyst
- Author
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Albalawneh, Da’ad Ahmad and Mohamed, M.A.
- Published
- 2024
- Full Text
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17. Transportation System and the Improvement of Urban Vehicular Flow in the District of Huánuco-Perú 2022.
- Author
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Verastegui, Yessica Julia and Esenarro, Doris
- Subjects
URBAN transportation ,URBANIZATION ,INFRASTRUCTURE (Economics) ,NOISE pollution ,PRIVATE networks ,PUBLIC transit ,BUSES - Abstract
The objective of this research is to propose a public transport reorganization system that allows the improvement of urban vehicle flow. The lack of adequate transportation infrastructure and the existing disorder in the services provided by collective car, Microbus, Rural Public Transportation Van (Combi), Coaster, and mototaxis generate congestion in public transportation, especially during peak hours, resulting in environmental and noise pollution. The research was structured into four stages: data collection on the public and private transportation network, importing and creating the transportation network in the urban area of the Huánuco district, zoning and connectivity of the study area, and finally, creating the origin/destination (O/D) matrix for public transportation, supported by digital tools (ArcGIS 10.5, AutoCAD 2018, Excel 2017). To meet the demand of 135,343 passengers from South to North and 118,958 from North to South, the proposal includes establishing one main route and seven feeder routes, requiring 422 buses and road infrastructure, as depicted in the proposal This system will have exclusive lanes to operate the Mass Transit System, allowing it to accommodate 59% of users who prefer using public transportation. This proposal aims to offer an efficient and high-quality transportation system. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
18. Energy Storage Systems: Technologies and High-Power Applications.
- Author
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Aghmadi, Ahmed and Mohammed, Osama A.
- Subjects
ENERGY storage ,MAGNETIC energy storage ,TECHNOLOGICAL progress ,OPTICAL disks ,ENERGY infrastructure ,RENEWABLE energy sources ,TECHNOLOGICAL innovations - Abstract
Energy storage systems are essential in modern energy infrastructure, addressing efficiency, power quality, and reliability challenges in DC/AC power systems. Recognized for their indispensable role in ensuring grid stability and seamless integration with renewable energy sources. These storage systems prove crucial for aircraft, shipboard systems, and electric vehicles, addressing peak load demands economically while enhancing overall system reliability and efficiency. Recent advancements and research have focused on high-power storage technologies, including supercapacitors, superconducting magnetic energy storage, and flywheels, characterized by high-power density and rapid response, ideally suited for applications requiring rapid charging and discharging. Hybrid energy storage systems and multiple energy storage devices represent enhanced flexibility and resilience, making them increasingly attractive for diverse applications, including critical loads. This paper provides a comprehensive overview of recent technological advancements in high-power storage devices, including lithium-ion batteries, recognized for their high energy density. In addition, a summary of hybrid energy storage system applications in microgrids and scenarios involving critical and pulse loads is provided. The research further discusses power, energy, cost, life, and performance technologies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
19. A Review on the Recent Trends of Image Steganography for VANET Applications.
- Author
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Ansari, Arshiya S.
- Subjects
VEHICULAR ad hoc networks ,INTELLIGENT transportation systems ,CRYPTOGRAPHY ,TRAFFIC flow ,DATA security ,TRAFFIC safety - Abstract
Image steganography is a technique of concealing confidential information within an image without dramatically changing its outside look. Whereas vehicular ad hoc networks (VANETs), which enable vehicles to communicate with one another and with roadside infrastructure to enhance safety and traffic flow provide a range of value-added services, as they are an essential component of modern smart transportation systems. VANETs steganography has been suggested by many authors for secure, reliable message transfer between terminal/hope to terminal/hope and also to secure it from attack for privacy protection. This paper aims to determine whether using steganography is possible to improve data security and secrecy in VANET applications and to analyze effective steganography techniques for incorporating data into images while minimizing visual quality loss. According to simulations in literature and real-world studies, Image steganography proved to be an effective method for secure communication on VANETs, even in difficult network conditions. In this research, we also explore a variety of steganography approaches for vehicular ad-hoc network transportation systems like vector embedding, statistics, spatial domain (SD), transform domain (TD), distortion, masking, and filtering. This study possibly shall help researchers to improve vehicle networks' ability to communicate securely and lay the door for innovative steganography methods. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
20. A Causal Loop Diagram of Banyumas Tourism Projection with Transportation System Improvement
- Author
-
Ratih Windu Arini, Syarif Hidayatuloh, Diniary Ikasari, Bachtiar Herdianto, Firmansyah Isrofil Putra, and Sarah Karenina Sari
- Subjects
tourism supply chain ,transportation system ,model formulation ,causal loop diagram ,Industrial engineering. Management engineering ,T55.4-60.8 - Abstract
Banyumas is one of the famous tourist destinations in Central Java with its natural attractions. Tourism growth in Banyumas requires capable and sustainable transportation infrastructure. However, current policies and investments in Banyumas are inappropriate for developing transportation and tourism infrastructure that creates non-significant impact. Therefore, the development of tourism projection should consider environmental, social, economics, and technology interrelated in developing transportation and tourism infrastructure issues. The tourism supply chain has a unique structure that is different from typical supply chains with high complexity because many stakeholders are involved. This research aims to project Banyumas tourism development with the impact of transportation system improvement. This conceptual model was developed from literature reviews and other necessary sources, and then validated by experts. The conceptual model examines the relationship between variables involved in the tourism supply chain and transportation system in Banyumas that can be developed into a quantitative model using Causal Loop Diagram, an initial stage of system dynamics. This model used to analyze the behavior of visitor projection of the Banyumas tourism supply chain system in Indonesia.
- Published
- 2024
- Full Text
- View/download PDF
21. Games for Health in Transportation Systems
- Author
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Cevin Zhang, Yan Sun, and Hong Lu
- Subjects
Design improvement strategy ,participatory approach ,public health ,game for health ,transportation system ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
Transportation systems design might be supported by participatory approaches refining service design, user experiences, and safety research. The evaluation of mobility alternatives as design improvement strategies requires more advanced instructional techniques with new structures of complexity that can demonstrate, analyze, or compare system performances in order to achieve environmental sustainability in general and the well-being of the end-users in particular. As an emerging technology, games are capable of representing operations and management of passenger freight transportation and increase situational awareness of capacity bottlenecks. However, few research efforts have been devoted to the synthesis of the research progress. Based on the profiling methodology that has been previously employed in retrospect of healthcare simulations, this article presents a bibliometric review of games for health in transportation systems. The study carries out a literature analysis of the modelling methods to assemble gamified scenarios from a planning and managerial perspective. The Web of Science Core Collections are used to identify research items and investigate all the game-based studies in the cross-disciplinary research area of transportation and public health. The technology, game mechanism, and the health-related issue addressed are grouped into broad categories. The research findings are three-fold. (1) The majority of publications are classified into research efforts revolving around slow and road transportation modes. (2) Although scores, badges, and challenges are considered as the frequently seen gamification features, environmental simulation, avatars, and narratives appear as game mechanisms for the activation of the individual decision-making process. (3) Introducing system dynamics, human-computer interaction design, and a stakeholder accountability framework into the multi-stakeholder simulation setting leverages gaming outcomes with health benefits amid transportation system end-users. The literature study concludes with an integrated framework summarizing the best design practices between 2002 and 2022 on how the lessons learned from serious gameplay in virtual environments could translate into real mobility improvements. A selection of future research questions is curated to envisage new links between transportation and health research communities.
- Published
- 2024
- Full Text
- View/download PDF
22. Digital Twin Approach for Operation and Maintenance of Transportation System—Systematic Review
- Author
-
Sylwia Werbińska-Wojciechowska, Robert Giel, and Klaudia Winiarska
- Subjects
digital twin ,operation and maintenance ,transportation system ,systematic review analysis ,air transportation ,railway transportation ,Chemical technology ,TP1-1185 - Abstract
There is a growing need to implement modern technologies, such as digital twinning, to improve the efficiency of transport fleet maintenance processes and maintain company operational capacity at the required level. A comprehensive review of the existing literature is conducted to address this, offering an up-to-date analysis of relevant content in this field. The methodology employed is a systematic literature review using the Primo multi-search tool, adhering to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The selection criteria focused on English studies published between 2012 and 2024, resulting in 201 highly relevant papers. These papers were categorized into seven groups: (a) air transportation, (b) railway transportation, (c) land transportation (road), (d) in-house logistics, (e) water and intermodal transportation, (f) supply chain operation, and (g) other applications. A notable strength of this study is its use of diverse scientific databases facilitated by the multi-search tool. Additionally, a bibliometric analysis was performed, revealing the evolution of DT applications over the past decade and identifying key areas such as predictive maintenance, condition monitoring, and decision-making processes. This study highlights the varied levels of adoption across different transport sectors and underscores promising areas for future development, particularly in underrepresented domains like supply chains and water transport. Additionally, this paper identifies significant research gaps, including integration challenges, real-time data processing, and standardization needs. Future research directions are proposed, focusing on enhancing predictive diagnostics, automating maintenance processes, and optimizing inventory management. This study also outlines a framework for DT in transportation systems, detailing key components and functionalities essential for effective maintenance management. The findings provide a roadmap for future innovations and improvements in DT applications within the transportation industry. This study ends with conclusions and future research directions.
- Published
- 2024
- Full Text
- View/download PDF
23. Towards perfecting road extraction: the fusion of dilated convolution-based layers and vision transformer.
- Author
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Kumar, K. Madhan and Velayudham, A.
- Abstract
This study addresses challenges in road extraction from remote sensing imagery by introducing a novel approach leveraging Dilated Convolution-based layers and Vision Transformer (ViT). ViT extracts features from image patches, capturing relationships via self-attention and refining with a feedforward neural network. The model incorporates dilated convolution for an enlarged receptive field without increased parameters, enhancing road extraction. Fusion of Dilated Convolution-based layers with ViT forms feature representation, enabling the encoder-decoder architecture to predict roads pixel-wise. Experimental results on the DGR dataset showcase the approach’s high performance (F1 score: 98%, recall: 96.5%, specificity: 96.7%, accuracy: 98.8%, precision: 97.75%), demonstrating resilience across dataset sizes and geographical regions. This approach holds promise for real-world applications and future advancements in remote sensing research. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
24. Traffic Safety Assessment and Injury Severity Analysis for Undivided Two-Way Highway–Rail Grade Crossings.
- Author
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Ren, Qiaoqiao, Xu, Min, Zhou, Bojian, and Chung, Sai-Ho
- Subjects
- *
TRAFFIC safety , *RAILROAD crossings , *CRASH injuries , *OLDER automobile drivers , *WOUNDS & injuries , *INFERENTIAL statistics , *RAILROAD management - Abstract
The safety and reliability of undivided two-way highway–rail grade crossings (HRGCs) are of paramount importance in transportation systems. Utilizing crash data from the Federal Railroad Administration between 2020 and 2021, this study aims to predict crash injury severity outcomes and investigate various factors influencing injury severities. The χ2 test was first used to select variables that were significantly associated with injury outcomes. By employing the eXtreme Gradient Boosting (XGBoost) model and interpretable SHapley Additive exPlanations (SHAP), a cross-category safety assessment that offers an evidence-based hierarchy and statistical inference of risk factors associated with crashes, crossings, vehicles, drivers, and environment was provided for killed, injured, and uninjured outcomes. Some significant predictors overlapped between the killed and injured models, such as old driver, driver was in vehicle, main track, went around the gate, adverse crossing surface, and truck, while the other different significant factors revealed that the model could distinguish between different severity levels. Additionally, the results suggested that the model has varying performances in predicting different injury severities, with the killed model having the highest accuracy of 93.36%. The SHAP dependency plots for the top three features also ensure reliable predictions and inform potential interventions aimed at strengthening traffic safety and risk management practices, such as enhanced warning systems and targeted educational campaigns for older drivers. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
25. Analysis of Global Warming Potential (GWP) on Waste Transportation System Scenarios Using The Life Cycle Assessment Method in Panakkukang District, Makassar.
- Author
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Yasin, Anugrah
- Subjects
PRODUCT life cycle assessment ,GLOBAL warming ,LIFE cycles (Biology) ,GREENHOUSE effect ,EARTH temperature ,SUSTAINABLE urban development - Abstract
Global warming, induced by the effects of Greenhouse Gases (GHGs), is a major concern in the context of the global ecosystem. The Intergovernmental Panel on Climate Change (IPCC) has issued a serious warning that without serious handling of GHG emissions, the earth's temperature has the potential to increase drastically by up to 6.4°C. In facing this challenge, Life Cycle Assessment (LCA), as an analytical method, becomes an important instrument for evaluating the impact of a product or process throughout its life cycle. This research has a special focus on evaluating strategies for transporting waste from the Panakkukang sub-district to the Tamangapa final disposal site (TPA) in Makassar city. By comparing existing waste transportation routes and alternative scenarios, this research aims to identify transportation routes that have the smallest contribution to the Global Warming Potential (GWP). It is hoped that the results of this research can provide valuable guidance for the development of a sustainable waste transportation system in the city. Thus, this research not only has the potential to increase awareness of environmental impacts but can also make a significant contribution to efforts to create a friendly and sustainable environment in an increasingly urgent era of global warming. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
26. بررسی عوامل مؤثر بر میزان رضایتمند ی کاربرا ن ا ز مسیرهای دوچرخ هسواری درو نشهری؛ مورد مطالعاتی: مسیرها ی دوچرخهسواری شهر تهرا ن
- Author
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شادی شکری یزدا نآباد and سمانه جلیلی صدرآباد
- Abstract
Problem statement: The rapid growth of metropolises has increased the population and the desire to use cars more. In the meantime, the metropolis of Tehran is not exempt from this problem and has been struggling with its many complications for years. The use and promotion of cycling as one of the cleanest modes of transportation has always been considered as one of the solutions. Many obstacles and factors influence the use of bicycle paths. Therefore, it is necessary to find solutions, with the help of which it is possible to get the most acceptance and satisfaction of citizens from these routes. In this regard, the upcoming research aims to investigate the factors affecting the citizens' level of satisfaction with bicycle paths in Tehran based on the opinions and preferences of citizens who use these paths. This research is applied in terms of type and follows a mixed-method approach, combining the quantitative and qualitative research methods. At first, indicators were extracted through a review of sources. To measure the level of users' satisfaction with the cycling paths, a number of 138 questionnaires were completed by Tehrani citizens who use these cycling routes. The factor analysis method was used to extract factors and multivariate regression to check the correlation between citizens' satisfaction with bike paths and the mentioned factors. After 44 Varimax rotations, a total of 14 factors with a cumulative variance higher than 60% were extracted. Two of the above factors included only one index and were removed. A multivariate regression was established among the remaining 12 factors as independent variables and citizen satisfaction as dependent variables. A direct and meaningful relationship exists between citizens' satisfaction and road condition factors, visual factors, facilities and equipment, institutional factors, organizational status, social factors, traffic management and planning, and time factors. Therefore, it is suggested that managers, planners, designers, and all staff affecting urban planning pay attention to the factors influencing citizens' satisfaction with cycling routes. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
27. Impact of Padma Bridge on transportation system: a case study for Barisal Division
- Author
-
Md. Mohaimenul Islam Sourav, Sayma Afnanin, and Mohammed Russedul Islam
- Subjects
Padma Bridge ,Barisal Division ,Transportation system ,Structural equation modeling ,Relative importance index ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Abstract This study aims to identify Padma Bridge’s impact on Barisal Division’s transportation system. Through an extensive literature analysis, a total of 19 impact factors have been identified. A questionnaire was formed to evaluate public perception by rating these 19 factors using a Likert scale from 1 (very poor) to 5 (very good). A total of 614 responses were collected from the users of different transportation modes like buses, passenger ferries, and aeroplanes. A structural equation (SE) model was developed to evaluate the impact of the Padma Bridge on the transportation system. The relative importance index (RII) technique was also used to verify the SE model by establishing the weights given to each factor. According to the SEM path coefficient value, the impact factors are divided into three zones: red, yellow, and green, based on their significance. Among 19 factors, nine are in the red zone, three are in the yellow zone, and seven factors fall into the green zone. Due to the Padma Bridge, there has been a radical change in the bus sector. Destinations are being reached in less time, new buses are connected, daily bus trips have increased, and goods are transported in less time. On the contrary, passenger ferries are experiencing a sharp decline in passenger numbers, daily trips are reducing, and staff members are losing their jobs. The outcome of this study will help the authorities and stakeholders to establish a sustainable transportation system in Barisal Division.
- Published
- 2023
- Full Text
- View/download PDF
28. Quantitative analysis of the importance and correlation of urban bridges and roads in the study of road network vulnerability
- Author
-
Qinghua Xiao, Hongwei Huang, and Chao Tang
- Subjects
Urban road network ,Transportation system ,Vulnerability analysis ,Importance and correlation between bridge and road ,Bridge engineering ,TG1-470 - Abstract
Abstract The city development is closely related to the performance of the transportation network system. Bridges and roads are important parts of the transportation system, and are also inseparable components of the transportation network. However, the effect of the correlation between bridges and roads on the network system has not been studies thoroughly in the literature. Therefore, it is necessary to analyse the vulnerability of the road network when both bridges and roads are involved. In this paper, the urban road network is modeled into the form of network connection and node, based on the analysis of the related research results of road network vulnerability in the literature. Taking the urban roads at all levels as the connection and the transportation hubs (including bridges) as the nodes, the paper puts forward the corresponding measurement indexes and calculation methods, and establishes the importance and correlation analysis model of roads and bridges in the urban road network. At last, the model is applied to the road network which is 5 × 3 km2 besides Yangpu Bridge of Shanghai for verification, the importance and correlation of specific roads and bridges in the analyzed urban road network are calculated, which provides a certain basis for dealing with various emergencies leading to the decline of urban road network vulnerability. In this paper, the importance analysis of urban road network is extended to the bridge correlation analysis, so that the proposed model of the vulnerability assessment of the urban road network system is more suitable for the increasingly demand of road and bridge construction in China, and provides a certain basis for dealing with the decline of road network vulnerability caused by various emergencies.
- Published
- 2023
- Full Text
- View/download PDF
29. Public Transport Mismanagement and Its Effects in Dhaka City
- Author
-
Islam, Shainima, Setyanto, Refius Pradipta, Apriandi, Devy W., Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, and Kurniawan, Dwi Agus, editor
- Published
- 2023
- Full Text
- View/download PDF
30. VSNet: Vehicle State Classification for Drone Image with Mosaic Augmentation and Soft-Label Assignment
- Author
-
Lee, Youlkyeong, Choi, Jehwan, Jo, Kanghyun, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Nguyen, Ngoc Thanh, editor, Boonsang, Siridech, editor, Fujita, Hamido, editor, Hnatkowska, Bogumiła, editor, Hong, Tzung-Pei, editor, Pasupa, Kitsuchart, editor, and Selamat, Ali, editor
- Published
- 2023
- Full Text
- View/download PDF
31. Smart City Implementation: Challenges and Opportunities
- Author
-
Graham, Donald and Graham, Don
- Published
- 2023
- Full Text
- View/download PDF
32. Influencing Factors and System Dynamics Analysis of Urban Public Bicycle Projects in China Based on Urban Size and Demographic Characteristics
- Author
-
Wang, Xiujuan, Du, Yong, Qi, Xiaoyang, Bai, Chuntao, Xhafa, Fatos, Series Editor, Hu, Zhengbing, editor, Zhang, Qingying, editor, and He, Matthew, editor
- Published
- 2023
- Full Text
- View/download PDF
33. Tinkering in Sunway City: Sustainable Transportation and Mobility for Older Dwellers
- Author
-
Wong, Ka Po, Teh, Pei-Lee, Qin, Jing, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, and Rau, Pei-Luen Patrick, editor
- Published
- 2023
- Full Text
- View/download PDF
34. An Analysis of Real-Time Number Plate-Based Verification System with Insurance Processing Using OCR Techniques
- Author
-
Pandiaraja, P., Kumar, P. Biranav, Jaisaran, N., Ram, V. Karthick, Xhafa, Fatos, Series Editor, Rajakumar, G., editor, Du, Ke-Lin, editor, and Rocha, Álvaro, editor
- Published
- 2023
- Full Text
- View/download PDF
35. Sharing Automated Vehicles: Policies and Ideas to Improve the Sharing Experience to Reduce Congestion and Energy Use in a Post-COVID World
- Author
-
Auld, Joshua, Baker, Denise, Chou, Danielle, Foss, Ann, Machek, Elizabeth, Riggs, William, Smith, Scott, Meyer, Gereon, Series Editor, Beiker, Sven, Editorial Board Member, Bekiaris, Evangelos, Editorial Board Member, D'Agosto, Marcio de Almeida, Editorial Board Member, Hofmann, Karsten, Editorial Board Member, Langheim, Jochen, Editorial Board Member, Van Mierlo, Joeri, Editorial Board Member, and Voege, Tom, Editorial Board Member
- Published
- 2023
- Full Text
- View/download PDF
36. Impact of Padma Bridge on transportation system: a case study for Barisal Division.
- Author
-
Sourav, Md. Mohaimenul Islam, Afnanin, Sayma, and Islam, Mohammed Russedul
- Subjects
SUSTAINABLE transportation ,PUBLIC opinion ,LIKERT scale ,BUSES ,FERRIES - Abstract
This study aims to identify Padma Bridge's impact on Barisal Division's transportation system. Through an extensive literature analysis, a total of 19 impact factors have been identified. A questionnaire was formed to evaluate public perception by rating these 19 factors using a Likert scale from 1 (very poor) to 5 (very good). A total of 614 responses were collected from the users of different transportation modes like buses, passenger ferries, and aeroplanes. A structural equation (SE) model was developed to evaluate the impact of the Padma Bridge on the transportation system. The relative importance index (RII) technique was also used to verify the SE model by establishing the weights given to each factor. According to the SEM path coefficient value, the impact factors are divided into three zones: red, yellow, and green, based on their significance. Among 19 factors, nine are in the red zone, three are in the yellow zone, and seven factors fall into the green zone. Due to the Padma Bridge, there has been a radical change in the bus sector. Destinations are being reached in less time, new buses are connected, daily bus trips have increased, and goods are transported in less time. On the contrary, passenger ferries are experiencing a sharp decline in passenger numbers, daily trips are reducing, and staff members are losing their jobs. The outcome of this study will help the authorities and stakeholders to establish a sustainable transportation system in Barisal Division. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
37. Exploring Nexus between Transportation System and Economic Development in Nigeria: A Case of Railway Passenger Travel.
- Author
-
ODUTAYO, DINA ADEOLU, ADISA, RAJI BASHIRU, and OLAYIWOLA, SOLANKE MUSE
- Subjects
TRANSPORTATION research ,ECONOMIC development ,RAILROAD travel ,GROSS domestic product ,ECONOMIC forecasting - Abstract
Studies frequently explored the relationship between economic performance and transport investments. However, how the performance of the economy relates to the usage of transport in Africa and Nigeria in particular is poorly explored prompting investigation on the nexus between railway passenger travel and economic development in Nigeria. The study employed the Vector Auto-Regressive (VAR) Model to analyse the 60-year annual time series data of railway passenger movement, annual GDP, and inflation. Results indicate about 72.5% of the variables entered in the model accounted for 72.5% of changes observed in railway passenger traffic with Lag 1 of passenger travel exerting the most substantial influence on the output. The result further shows Inflation and GDP (x = 0.485223; P = 0.7846.) as well as their lags are redundant in forecasting the 60-year data. The study concludes that economic performance does not influence travel by railways among passengers using railways in Nigeria. [ABSTRACT FROM AUTHOR]
- Published
- 2023
38. Quantitative analysis of the importance and correlation of urban bridges and roads in the study of road network vulnerability.
- Author
-
Xiao, Qinghua, Huang, Hongwei, and Tang, Chao
- Subjects
CITY traffic ,BRIDGE design & construction ,STATISTICAL correlation ,ROAD construction ,QUANTITATIVE research ,URBAN growth - Abstract
The city development is closely related to the performance of the transportation network system. Bridges and roads are important parts of the transportation system, and are also inseparable components of the transportation network. However, the effect of the correlation between bridges and roads on the network system has not been studies thoroughly in the literature. Therefore, it is necessary to analyse the vulnerability of the road network when both bridges and roads are involved. In this paper, the urban road network is modeled into the form of network connection and node, based on the analysis of the related research results of road network vulnerability in the literature. Taking the urban roads at all levels as the connection and the transportation hubs (including bridges) as the nodes, the paper puts forward the corresponding measurement indexes and calculation methods, and establishes the importance and correlation analysis model of roads and bridges in the urban road network. At last, the model is applied to the road network which is 5 × 3 km
2 besides Yangpu Bridge of Shanghai for verification, the importance and correlation of specific roads and bridges in the analyzed urban road network are calculated, which provides a certain basis for dealing with various emergencies leading to the decline of urban road network vulnerability. In this paper, the importance analysis of urban road network is extended to the bridge correlation analysis, so that the proposed model of the vulnerability assessment of the urban road network system is more suitable for the increasingly demand of road and bridge construction in China, and provides a certain basis for dealing with the decline of road network vulnerability caused by various emergencies. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
39. Analysis of Intelligent Warehouse Storage Hardware System Demands for Customized Panel Furniture Enterprise.
- Author
-
GUO Chi-yang, WANG Bing, ZHANG Ting, LIN Xiu-yi, and HU Chuan-shuang
- Subjects
WAREHOUSES ,WAREHOUSING & storage ,ORDER picking systems ,FURNITURE ,REQUIREMENTS engineering ,WORKING hours - Abstract
In order to establish the design method and process of intelligent storage system for panel custom furniture enterprises, taking a factory with a daily output of 3 000 units as an example, through investigation and analysis of the proportion of direct sales orders and distribution orders, the storage capacity requirements such as the specifications and quantity of pallets and storage places were calculated. The capacity requirements of transfer systems such as transplanters, lifts and stackers were calculated according to the frequency of storage and working hours. According to the quantity and time required, the capacity requirements of loading system such as delivery staging area and loading channel were calculated. The results showed that the method and process established in this study are suitable for hardware, system requirement analysis and design of intelligent storage system of panel custom furniture enterprises, and can provide references for enterprises to scientifically design intelligent storage hardware system. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
40. Deep learning and big data for future smart cities: A survey
- Author
-
Vashist, Apurva
- Published
- 2023
- Full Text
- View/download PDF
41. Transportation System and the Improvement of Urban Vehicular Flow in the District of Huánuco-Perú 2022
- Author
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Yessica Julia Verastegui and Doris Esenarro
- Subjects
transportation system ,vehicular flow ,improvement ,urban transportation ,Technology - Abstract
The objective of this research is to propose a public transport reorganization system that allows the improvement of urban vehicle flow. The lack of adequate transportation infrastructure and the existing disorder in the services provided by collective car, Microbus, Rural Public Transportation Van (Combi), Coaster, and mototaxis generate congestion in public transportation, especially during peak hours, resulting in environmental and noise pollution. The research was structured into four stages: data collection on the public and private transportation network, importing and creating the transportation network in the urban area of the Huánuco district, zoning and connectivity of the study area, and finally, creating the origin/destination (O/D) matrix for public transportation, supported by digital tools (ArcGIS 10.5, AutoCAD 2018, Excel 2017). To meet the demand of 135,343 passengers from South to North and 118,958 from North to South, the proposal includes establishing one main route and seven feeder routes, requiring 422 buses and road infrastructure, as depicted in the proposal This system will have exclusive lanes to operate the Mass Transit System, allowing it to accommodate 59% of users who prefer using public transportation. This proposal aims to offer an efficient and high-quality transportation system.
- Published
- 2024
- Full Text
- View/download PDF
42. Investigating the impact of transportation system and economic growth on carbon emissions: Application of GMM System for 33 european countries.
- Author
-
Ghannouchi, Imen, Ouni, Fedy, and Aloulou, Foued
- Subjects
CARBON emissions ,IMPULSE response ,ECONOMIC expansion ,ECONOMIC systems ,GRANGER causality test ,AIR travel ,JOINT use of railroad facilities - Abstract
In Europe, there has been a significant shift in the movement of people and things. Nonetheless, despite the fact that transportation is an important component of the supply chain, its environmental consequences pose a severe threat to the ecosystem as a whole. As a result, we intend to explore the relationship between transportation, economy, and CO2 emissions. We used the Static method with Pooled OLS, then tested the Granger causality to validate the use of dynamic approach via the GMM system. The major findings revealed that GDP and trade openness had a considerable impact on CO2 emissions. Although the three modes of transportation have different effects on CO2 emissions, road density has a positive and considerable impact on CO2 emissions. The railway network is inversely connected to CO2 emissions. While the quantity of flight passengers has no substantial effect on emissions. In terms of the impulse response function, there is an initial shock in period 2 for the response of air passengers carried to CO2 emissions, followed by convergence back to zero in period 6, whereas road density has a slight decrease in period 2 with a post shock peak in period 4, followed by convergence back to zero in period 5. The variance decomposition results reveal a little increase until the fifth period for road density, air passengers, and trade openness with coefficients equal to 0.0893, 0.636, and 1.573, respectively, after which these three variables offer decreasing coefficients. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
43. Blockchain with Quantum Mayfly Optimization-Based Clustering Scheme for Secure and Smart Transport Systems.
- Author
-
Alamro, Hayam, Alqahtani, Hamed, Alruwaili, Fahad F., Aljameel, Sumayh S., and Rizwanullah, Mohammed
- Abstract
Blockchain (BC) with a clustering scheme can be used to build secure and smart Vehicular Ad-Hoc Networks (VANETs), which provide improved data integrity, enhanced security, efficient resource allocation, and streamlined processes. This technology has revolutionized the transport industry by enabling safer, more efficient, and transparent transportation networks. Therefore, this paper concentrates on the design of a new Blockchain with a Quantum Mayfly Optimization-based Clustering Scheme for Secure and Smart Transport Systems (BQMFO-CSSTS) technique. The objective of the presented BQMFO-CSSTS technique is to build a secure VANET via a BC-based technology and clustering process. Moreover, the BQMFO-CSSTS technique initially uses a Quantum Mayfly Optimization (QMFO) system with a fitness function for the selection of cluster heads (CHs) and the cluster construction process. In addition, BC technology is used as trust infrastructure to provide trustworthy services to the user and protect the privacy of the CHs and cluster members (CMs). The proposed scheme leverages the decentralized and immutable nature of BC to establish trust and ensure the integrity of cluster formation in VANETs. Finally, the BQMFO-CSSTS technique uses trajectory similarity metrics to protect the integrity of the CMs against attacks. The simulation results of the BQMFO-CSSTS technique are validated using a series of measures. The comprehensive results reported the superior outcomes of the BQMFO-CSSTS method over other recent approaches, with the maximum throughput being 1644.52 kbps. Therefore, integration of BC technology provides a transparent and secure framework through which to manage cluster membership, data sharing, and trust establishment among vehicles. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
44. 松辽盆地三肇凹陷葡萄花油层油气成藏 主控因素及成藏模式.
- Author
-
秦迎峰
- Abstract
Copyright of Special Oil & Gas Reservoirs is the property of Special Oil & Gas Reservoirs Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
45. APPLICATION AND MECHANICAL PROPERTIES OF THERMOPLASTIC POLYMERS FOR THE ADDITIVE MANUFACTURING OF TRANSPORTATION SYSTEMS.
- Author
-
KESSLER, J., SEMRÁD, K., DRAGANOVÁ, K., and KAŠPER, P.
- Subjects
- *
MANUFACTURING processes , *MECHANICAL stress analysis , *THREE-dimensional printing , *THERMOPLASTIC elastomers - Abstract
The gradual integration of the additive manufacturing into the common practice involves more complex requirements for the used materials. Although the additive manufacturing was mainly used for the rapid-prototyping purposes, with the development of the high-performance thermoplastic materials, the produced components can be applied not only in the laboratory conditions, but also in the real operation. Therefore, it is necessary to consider also the environmental influences that can significantly shorten the component lifetime. This article presents the 3D printing process for the selected thermoplastic polymers and the experimental verification of the strength analysis of the universal sensor holder together with the quantitative and qualitative comparison of their mechanical properties. [ABSTRACT FROM AUTHOR]
- Published
- 2023
46. Transportation as a loosely coupled system: a fundamental challenge for sustainable freight transportation.
- Author
-
Browne, Michael, Dubois, Anna, and Hulthén, Kajsa
- Subjects
- *
SUSTAINABLE transportation , *FREIGHT & freightage , *SUPPLY chains - Abstract
In view of the pressing need to reduce the negative environmental impact of freight transportation we argue that it is essential to take account of the organization of the freight transportation system when considering how to address various individual activities and parts of the system. To support a transition to a more sustainable freight transportation system this paper examines the way in which different parts of the system interact and the way this can impact the scope for profound change. Taking loosely coupled systems (Weick, 1976) as a starting point, we scrutinize the couplings within and between three system layers of the freight transportation system: the supply chain layer, the transportation layer, and the infrastructure layer. In addition, we address two interfaces connecting these layers: the market for transportation services, and the traffic using the infrastructure. We find that tight couplings dominate in the supply chain and infrastructure layers and that these couplings depend on loose couplings in the transportation layer and the two interfaces. The pattern of couplings identified in the freight transportation system can explain several positive outcomes, such as flexibility and efficiency. But there are also major negative aspects of the loosely coupled nature of the system that create resistance to change and present a barrier in the drive for increased sustainability. The paper concludes that the identified couplings and system features have important implications for policies aiming to change the freight transportation system in ways that lead to significant reduction in the reliance on oil. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
47. Implementation of Magnetic Markers for the Diagnostics of Conveyor Belt Transportation Systems.
- Author
-
Semrád, Karol and Draganová, Katarína
- Abstract
Together with the research and development of belt conveyors, diagnostic methods for their reliable operation have been developed. Our research is focused on the development of a diagnostic system and method of sensing the magnetic markers implemented directly into the conveyor belt, as in this way, it is possible to determine the velocity of the conveyor belt, which can be a source of information about the potential malfunction of the drive unit, control system, or of the belt itself. The magnetic markers can be also used to mark the particular segments of the conveyor belt, which can significantly enhance maintenance procedures thanks to the identification of damaged segments and the possibility to stop the conveyor belt in the maintenance area. However, problems can occur with the implementation of the magnetic markers. To prevent the magnetic markers from falling out, FEM (finite element method) simulations and analyses of commercially available magnetic markers with different dimensions were performed to analyze the nominal and friction force and related average contact pressure acting on the magnetic markers implemented into holes drilled into the conveyor belt in the curved state when passing through the drum. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
48. Machine Learning for Transport Policy Interventions on Air Quality
- Author
-
Farzaneh Farhadi, Roberto Palacin, and Phil Blythe
- Subjects
Air quality ,clean air zone ,data-driven framework ,machine learning ,policy validation ,transportation system ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
Air pollution reduction is a major objective for transport policy makers. This paper considers interventions in the form of clean air zones, and provide a machine learning approach to assess whether the objectives of the policy are achieved under the designed intervention. The dataset from the Newcastle Urban Observatory is used. The paper first tackles the challenge of finding datasets that are relevant to the policy objective. Focusing on the reduction of nitrogen dioxide (NO2) concentrations, different machine learning algorithms are used to build models. The paper then addresses the challenge of validating the policy objective by comparing the NO2 concentrations of the zone in the two cases of with and without the intervention. A recurrent neural network is developed that can successfully predict the NO2 concentration with root mean square error of 0.95.
- Published
- 2023
- Full Text
- View/download PDF
49. Application and mechanical properties of thermoplastic polymers for the additive manufacturing of transportation systems
- Author
-
J. Kessler, K. Semrád, K. Draganová, and P. Kašper
- Subjects
thermoplastic polymers ,mechanical stress analysis ,numerical analysis ,additive manufacturing ,transportation system ,Mining engineering. Metallurgy ,TN1-997 - Abstract
The gradual integration of the additive manufacturing into the common practice involves more complex requirements for the used materials. Although the additive manufacturing was mainly used for the rapid-prototyping purposes, with the development of the high-performance thermoplastic materials, the produced components can be applied not only in the laboratory conditions, but also in the real operation. Therefore, it is necessary to consider also the environmental influences that can significantly shorten the component lifetime. This article presents the 3D printing process for the selected thermoplastic polymers and the experimental verification of the strength analysis of the universal sensor holder together with the quantitative and qualitative comparison of their mechanical properties.
- Published
- 2023
50. Population mobility and urban transport management: perspectives environmental quality degradation and sustainable development of suburban Makassar City, Indonesia
- Author
-
Batara Surya, Agus Salim, Haeruddin Saleh, Seri Suriani, Kafrawi Yunus, and Patmawaty Taibe
- Subjects
land use change ,population mobility ,transportation system ,sustainable development ,Geography (General) ,G1-922 - Abstract
The expansion of the area towards suburban areas accompanied by suburbanization has an impact on the conversion of productive agricultural land and transportation movement systems. This study aims to analyse land use change works as a determinant of environmental degradation in suburban areas, the effect of land use changes, socio-economic activities, population mobility and transportation systems on environmental quality degradation, and models for handling land use, population mobility, transportation infrastructure and system management transportation towards sustainable development of suburban areas. This study uses a sequential qualitative-quantitative approach. Data obtained through observation, survey and documentation. The results of the study show that the intensity of land use change coupled with population mobility, in addition to affecting the urban transportation system based on the pattern of origin and destination of travel, also has an impact on the environmental quality degradation of suburban areas. Changes in land use, socioeconomic activities, population mobility and transportation systems has an effect in the environmental quality degradation of suburban areas with a coefficient of determination of 95.65 percent. This study recommends the application of a land use management model, population mobility, and transportation infrastructure towards the sustainability of the suburbs of Makassar City, Indonesia.
- Published
- 2022
- Full Text
- View/download PDF
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