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19 pages, 20114 KiB  
Article
Different Patterns of Religious Settlements Based on the Historic Landscape Approach: Cases of Buddhist Grottoes in Hexi Corridor
by Yueying Chen, Haichao Wu and Wenbin Wei
Religions 2024, 15(12), 1531; https://doi.org/10.3390/rel15121531 - 14 Dec 2024
Viewed by 432
Abstract
Religious settlements can reflect regional culture and social development, preserve the continuity of spatial structures over time, sustain social networks, and perpetuate traditions. Buddhist settlements, as a particular type of religious settlement, reflect the social development and daily lives of monks and common [...] Read more.
Religious settlements can reflect regional culture and social development, preserve the continuity of spatial structures over time, sustain social networks, and perpetuate traditions. Buddhist settlements, as a particular type of religious settlement, reflect the social development and daily lives of monks and common people. This study used literature research, field investigations, and GISs to construct a framework of the landscape of religious settlements based on the theory of the historic landscape approach. Buddhist grottoes from the Sixteen Kingdoms Period to the Qing Dynasty (304–1912) in the Hexi Corridor of Gansu Province were selected as a case study, and the patterns of religious settlements were identified. According to the analysis, it was found that religious settlements tended to have large religious buildings at their centre, with small buildings and attachments scattered around. They were close to central cities, with a complete transportation network, and they had relatively stable belief spaces. There were clear boundaries between believers and non-believers in the settlements. Four patterns of religious settlements were also identified according to the relationships between geography, social properties, and cultural connotations. These findings diachronically offer a new perspective on the understanding of religious settlements and steps for improving the inheritance of religious culture. Full article
(This article belongs to the Section Religions and Humanities/Philosophies)
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<p>Landscape of religious settlements.</p>
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<p>Distribution of Buddhist settlements in Hexi Corridor.</p>
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<p>Elevation and aspect of the Buddhist settlements in Hexi Corridor.</p>
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<p>Slope of Buddhist settlements in Hexi Corridor.</p>
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<p>Landscape of Buddhist grottoes in Hexi Corridor.</p>
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<p>Kernel density, buffer, and viewshed of Buddhist settlements in Hexi Corridor.</p>
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<p>Distribution of counties and Buddhist settlements in Hexi Corridor.</p>
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<p>Transportation in Hexi Corridor.</p>
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16 pages, 5660 KiB  
Article
A Revision of Dispersal Strategies in Freshwater Sponges: The Journey of the Ponto-Caspian Sponge Rosulaspongilla rhadinaea (Porifera: Spongillidae), a New Alien Species for Europe
by José Luis Carballo, José Antonio Cruz-Barraza and José Carlos García-Gómez
Limnol. Rev. 2024, 24(4), 577-592; https://doi.org/10.3390/limnolrev24040034 - 3 Dec 2024
Viewed by 441
Abstract
Alien species constitute one of the main threats to freshwater ecosystems, negatively impacting biodiversity, economy, and ecosystem services. Here, we use morphological and genetic data to show the presence of a new alien freshwater sponge in Europe, Rosulaspongilla rhadinaea, a Ponto-Caspian species [...] Read more.
Alien species constitute one of the main threats to freshwater ecosystems, negatively impacting biodiversity, economy, and ecosystem services. Here, we use morphological and genetic data to show the presence of a new alien freshwater sponge in Europe, Rosulaspongilla rhadinaea, a Ponto-Caspian species which recently has been found in the fluvial port of Seville (Guadalquivir River, Spain). We also reviewed the mechanisms and adaptations of freshwater sponges for dispersal. The gemmule is the key structure for understanding their life history, evolution, and dispersal capacity, since their high salinity tolerance may have made possible the spreading of these sponges on the hulls of ocean-going ships that frequent freshwater ports. Once established, they are dispersed via river currents and intraregional boat traffic through the network of interconnected channels, which act as invasion corridors. Transport via phoresy attached to mobile animal vectors such as birds (especially migrating birds) has also been demonstrated in several sponge species. Gemmules may be attached on the feathers and scales, or even to be transported in the guts of these animals, followed by defecation of viable gemmules. Transport associated with other invasive freshwater species, such as mussels, cannot be ruled out. The scarcity of taxonomic studies of freshwater sponges in the Iberian Peninsula might explain why the species had not been recorded. Full article
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<p>(<b>a</b>) Map of the Iberian Peninsula showing the position of the Port of Seville (white mark in the south). The inserted photograph shows a view of the basin of the river Guadalquivir as it passes through the city of Seville, and the presence of a large cruise ship. (<b>b</b>) Aerial image of the River Guadalquivir (left arrow) and of the canal and the port (right arrow). (<b>c</b>) Image of one of the specimens collected (photograph taken in aquarium). (<b>d</b>) Image of a part of a specimen showing a large number of gemmules, mainly located at the base of the sponge. (<b>e</b>) Detail of the sponge surface showing rounded subdermal spaces of different sizes.</p>
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<p>SEM images of spicules of <span class="html-italic">Rosulaspongilla rhadinaea</span>. (<b>a</b>) Megascleres. (<b>b</b>) Tips of two megascleres. (<b>c</b>) Microscleres (slender slightly curved, spiny oxeas). (<b>d</b>) Detail of the spinulation of microscleres (middle part of the spicule) where rosettes of microspines are observed.</p>
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<p>SEM images of spicules of <span class="html-italic">Rosulaspongilla rhadinaea</span>. (<b>a</b>) Typical gemmuloscleres. Short, robust, spiny oxeas. (<b>b</b>) Some gemmuloscleres with rounded tips like strongyles. (<b>c</b>) Small gemmuloscleres in form of spiny strongyles. They are very rare in abundance.</p>
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<p>SEM images of gemmules of <span class="html-italic">Rosulaspongilla rhadinaea</span>. (<b>a</b>) General view of a gemmule. (<b>b</b>) Foramen. (<b>c</b>) Cross section of a gemmule. The arrow points to the fine mesh of the pneumatic layer. Gemmoscleres are clearly observable sparsely and irregularly embedded in the pneumatic and outer coat layers.</p>
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<p>Bayesian phylogenetic ITS rDNA tree of Spongillida. The numbers on the branches represent posterior probabilities (%) (PP)/bootstrap proportions (BP) of Maximum likelihood; a (–) indicates that a particular analysis supported the node at less than 50% or supported an alternative phylogenetic arrangement in the ML tree. The obtained sequences from this study are shown in bold. Numbers after each species name refer to NCBI GenBank accession.</p>
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<p>Inland waterways and shipping routes, showing the great interconnection between different river basins in Europe. Image by RRG Ordenación del Territorio y Geoinformación.</p>
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12 pages, 1492 KiB  
Article
Are Safety Corridors Effective in Mitigating Safety? An Ohio-Based Case Study Evaluating Their Effectiveness
by Sudesh Ramesh Bhagat, Bernard Ndeogo Issifu, Devon Destocki, Bhaven Naik and Deogratias Eustace
Vehicles 2024, 6(4), 1963-1974; https://doi.org/10.3390/vehicles6040096 - 24 Nov 2024
Viewed by 477
Abstract
Distracted driving remains a major concern on highways, with it contributing to severe and fatal crashes, particularly on high-speed routes, prompting numerous states to implement targeted initiatives aimed at combating traffic violations that significantly contribute to fatal and injury-inducing crashes. Among these initiatives [...] Read more.
Distracted driving remains a major concern on highways, with it contributing to severe and fatal crashes, particularly on high-speed routes, prompting numerous states to implement targeted initiatives aimed at combating traffic violations that significantly contribute to fatal and injury-inducing crashes. Among these initiatives is the highway safety corridor program, a collaborative endeavor between the state departments of transportation and law enforcement agencies. Highway safety corridors employ a combination of engineering interventions and heightened law enforcement presence to address risky driver behavior and mitigate the occurrence of crashes. Despite the longstanding existence of safety corridors, research on their effectiveness remains relatively limited, with existing studies indicating only moderate success rates. This study is dedicated to evaluating the effectiveness of ten highway safety corridors in Ohio, where the state recently launched its inaugural highway safety corridor program targeting distracted driving. Utilizing 2023 crash data, this Empirical Bayes’ before-and-after study seeks to gauge the impact of these safety corridors on enhancing roadway transportation safety. Upon assessing all crash types within Ohio’s distracted driving safety corridors that provided sufficient data for a before–after study, it was determined that the adoption of safety corridors generally led to a reduction in crashes ranging from 2% to 49%. The significance and magnitude of crash reduction may vary if specific crash types or severity levels are considered. Full article
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<p>Increased signage at a distracted driving safety corridor in Ohio [<a href="#B19-vehicles-06-00096" class="html-bibr">19</a>].</p>
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<p>Increased signage at a distracted driving and speeding safety corridor in Ohio [<a href="#B20-vehicles-06-00096" class="html-bibr">20</a>].</p>
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25 pages, 3702 KiB  
Article
Dynamics Influencing Factors and Sustainable Development Strategies in Population Shrinking Cities of Jiangsu Province, China
by Congjian Chen, Fen Xu and Yang Cao
Sustainability 2024, 16(23), 10209; https://doi.org/10.3390/su162310209 - 22 Nov 2024
Viewed by 630
Abstract
Studies on urban shrinkage in eastern China lack relevant contributions. This study investigates population dynamics in Jiangsu Province, focusing on county-level cities to understand the factors influencing urban population size. It developed a multidimensional indicator system per 2014, 2017, 2020, and 2023 statistical [...] Read more.
Studies on urban shrinkage in eastern China lack relevant contributions. This study investigates population dynamics in Jiangsu Province, focusing on county-level cities to understand the factors influencing urban population size. It developed a multidimensional indicator system per 2014, 2017, 2020, and 2023 statistical data, incorporating road network accessibility, socio-economic levels, resident income, public services, and the built environment. Employing static fixed effects models and dynamic panel regression models, it analyses trends and evolutionary patterns of permanent population changes. The findings indicate an overall increase in the permanent population over the past decade, although the growth rate has slowed in the last five years. Notably, there is a significant spatial clustering of population growth and contraction, often aligned with high-speed transportation corridors. Unlike existing research findings, the urban shrinkage pattern in Jiangsu Province is unique. Some cities in northern Jiangsu exhibit a ‘relative contraction’ pattern, where population decline coexists with high economic growth and spatial expansion. Key short-term factors influencing population size include the city’s economic level and residents’ disposable income, while long-term factors encompass city level, industrial structure, and transportation networks. Small towns exhibit ‘close-range mobility’, with primary short-term influences stemming from residents’ income, public service quality, and intercity transportation accessibility. Indeed, long-term factors primarily reflect economic development quality and urban employment rates. Full article
(This article belongs to the Special Issue Sustainable and Resilient Regional Development: A Spatial Perspective)
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<p>Nanjing and the study area.</p>
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<p>Indicator system affecting changes in urban population size.</p>
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<p>Indicator system affecting changes in urban population size.</p>
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<p>Spatial evolution and distribution map of population patterns in various counties (Cities, Districts) of Jiangsu Province.</p>
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<p>Different shrinkage patterns in different types of regions.</p>
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<p>Formation mechanism of circular transformation between urban population growth and contraction in rapidly urbanized areas.</p>
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25 pages, 13147 KiB  
Article
Efficient Public Underground Pedestrian Space in a Cold-Climate City: A Case Study of Sapporo, Japan
by Margarita Krivorotko, Tsuyoshi Setoguchi and Norihiro Watanabe
Sustainability 2024, 16(22), 9995; https://doi.org/10.3390/su16229995 - 16 Nov 2024
Viewed by 597
Abstract
This study examines the impact of changes in temperature and seasonal climate across a 4-year period (2019–2022) and the impact of the existing design on pedestrian activity in the ChiKaHo underground public space in Sapporo, Japan. Using statistical and regression analyses, the study [...] Read more.
This study examines the impact of changes in temperature and seasonal climate across a 4-year period (2019–2022) and the impact of the existing design on pedestrian activity in the ChiKaHo underground public space in Sapporo, Japan. Using statistical and regression analyses, the study identified boundary temperature ranges for each analyzed point in this space and presented an assumption of the design- and function-related factors influencing the period of use of the ChiKaHo. Each observation point exhibited a unique temperature range of change in pedestrian behavior, from −2 °C (points J1 and J3 near the main transportation station gate and in the corridor, respectively) to +6.8–13.2 °C for points J2 and J4, near open spaces. This research revealed the temperature ranges affecting pedestrian use of underground spaces and that a varying climate has different influences on a particular location. In the future, this can be used as a basis for local design improvements and seasonal adaptation policies to provide a sustainable public underground space in ChiKaHo. Full article
(This article belongs to the Section Sustainable Urban and Rural Development)
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<p>Map of underground walking space in Sapporo and ChiKaHo.</p>
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<p>Scheme of Sapporo underground walkway system research.</p>
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<p>Dependence of pedestrian flow on temperature at the four points for 4 years of observation. (<b>a</b>–<b>d</b>)—Dependence of pedestrian flow on temperature in J1 for 2019–2022 respectively. (<b>e</b>–<b>h</b>)—Dependence of pedestrian flow on temperature in J2 for 2019–2022 respectively. (<b>j</b>–<b>m</b>)—Dependence of pedestrian flow on temperature in J3 for 2019–2022 respectively. (<b>n</b>–<b>q</b>)—Dependence of pedestrian flow on temperature in J4 for 2019–2022 respectively.</p>
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<p>Comparison of 2019 pedestrian traffic in ChiKaHo and 2020 in four observed locations. (<b>a</b>)—Pedestrian flow in 2019 and 2020 at point J1. (<b>b</b>)—Pedestrian flow in 2019 and 2020 at point J2. (<b>c</b>)—Pedestrian flow in 2019 and 2020 at point J3. (<b>d</b>)—Pedestrian flow in 2019 and 2020 at point J4.</p>
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<p>Functions of pedestrian number per location and temperature changing points across 4 years of observation (average; 2019–2022) from 9:30 to 16:00. 1—Changing Temperature Point for J1. 2—Changing Temperature Point for J2. 3—Changing Temperature Point for J3. 4—Changing Temperature Point for J4.</p>
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<p>Function of second derivatives per location across 4 years of observation (average; 2019–2022) from 9:30 to 16:00. 1—local maximum of second derivative for J1. 2—local minimum of second derivative for J2. 3—local minimum of second derivative for J3. 4—local maximum of second derivative for J4.</p>
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<p>Change in pedestrian flow by point for 2021–2022.</p>
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<p>Dynamics of passenger use of the Sapporo and Odori Subway Stations on the Namboku Line.</p>
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<p>Functions in ChiKaHo (number of spots).</p>
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<p>Map of connected buildings with ChiKaHo and Sapporo public facilities.</p>
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<p>ChiKaHo map with representation of functions and services.</p>
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<p>Photos of J1 in ChiKaHo: (<b>a</b>) west and (<b>b</b>) east sides of the ChiKaHo path.</p>
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<p>Photos of J2 in ChiKaHo: (<b>a</b>) west and (<b>b</b>) east sides of the ChiKaHo path.</p>
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<p>Photos of J3 in ChiKaHo: (<b>a</b>) west and (<b>b</b>) east sides of ChiKaHo.</p>
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<p>Photo of J4 in ChiKaHo.</p>
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<p>Change in pedestrian flow per 15-minute interval from 9:30 to 16:00 in ChiKaHo at the observation points for average temperatures of 0 °C and 10 °C from Sapporo to Odori Station with two directions, namely from Sapporo to Odori (J1, J2, J3, and J4) and the opposite direction, from Odori to Sapporo Station (2021–2022).</p>
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<p>Influence of the observation points of pedestrian flow on one another according to direction of movement and temperature changes.</p>
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16 pages, 32403 KiB  
Article
Integrated Analysis of Rockfalls and Floods in the Jiului Gorge, Romania: Impacts on Road and Rail Traffic
by Marian Puie and Bogdan-Andrei Mihai
Appl. Sci. 2024, 14(22), 10270; https://doi.org/10.3390/app142210270 - 8 Nov 2024
Viewed by 813
Abstract
This study examines the impact of rockfalls and floods on road and rail traffic in the Jiului Gorge, Romania, a critical transportation corridor. Using Sentinel-1 radar imagery processed through ESA SNAP and ArcGIS Pro, alongside traffic detection facilitated by YOLO models, we assessed [...] Read more.
This study examines the impact of rockfalls and floods on road and rail traffic in the Jiului Gorge, Romania, a critical transportation corridor. Using Sentinel-1 radar imagery processed through ESA SNAP and ArcGIS Pro, alongside traffic detection facilitated by YOLO models, we assessed susceptibility to both rockfalls and floods. The primary aim was to enhance public safety for traffic participants by providing accurate hazard mapping. Our study focuses on the area from Bumbești-Jiu to Petroșani, traversing the Southern Carpathians. The results demonstrate the utility of integrating remote sensing with machine learning to improve hazard management and inform more effective traffic planning. These findings contribute to safer, more resilient infrastructure in areas vulnerable to natural hazards. Full article
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<p>Geographical location of the study area.</p>
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<p>Sentinel 1 GRD images of study area from descending orbit (left, 20 January 2023), from ascending orbit (middle, 20 January 2023), RGB interferogram and processing software workflow.</p>
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<p>ESA SNAP software workflow image samples for rockfall detection from Sentinel-1 SLC product.</p>
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<p>Flood map of the Jiului Gorge region, illustrating the extent and severity of flood events based on Sentinel-1 GRD images.</p>
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<p>Rockfall map displaying incidents along National Road 66 and surrounding slopes for specified dates.</p>
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<p>Rockfall susceptibility map showing areas highly susceptible to rockfall, with a notable prevalence in the upper section of the gorge.</p>
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<p>Rockfall susceptibility map combined with affected areas from radar images, highlighting the upper part of the gorge with high susceptibility.</p>
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<p>Floods susceptibility map combining DEM-derived slope classifications, land cover types, rainfall, and proximity to water bodies, showing higher susceptibility in wider parts of the gorge.</p>
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<p>Floods susceptibility map combined with radar-detected flood areas, illustrating increased susceptibility in the central and southern parts of the gorge.</p>
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<p>Train detection and recognition using YOLO models, illustrating detection from a significant distance with reduced visibility.</p>
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<p>Road traffic element detection with greater precision due to closer camera proximity.</p>
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<p>Training results from YOLOv9 model, showcasing classes obtained after training.</p>
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<p>Detection results including several classes, highlighting various rockfall types.</p>
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<p>Detection results focusing on a single class, illustrating detailed rockfall identification.</p>
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14 pages, 986 KiB  
Article
The Role of Technophilia and User Goals in the Intention to Use a Mobility Management Travel App
by João de Abreu e Silva and Julianno de Menezes Amorim
Sustainability 2024, 16(22), 9645; https://doi.org/10.3390/su16229645 - 5 Nov 2024
Viewed by 716
Abstract
The ubiquitous use of mobile devices along with the amount of traffic, transportation services, and travel pattern data available has led to the emergence and deployment of smartphone applications for providing information about personal travel management. Several of these travel apps are aimed [...] Read more.
The ubiquitous use of mobile devices along with the amount of traffic, transportation services, and travel pattern data available has led to the emergence and deployment of smartphone applications for providing information about personal travel management. Several of these travel apps are aimed at voluntary travel behavior change (VTBC) to support and increase sustainable mobility, and have led to the development of research to investigate their influence on travel behavior. Here, the aim is to study the role of technophilia and goal-framing theory in the intention to adopt and situationally use a prospective VTBC travel app. A Structural Equation Model is developed with the aim of empirically testing a sample of 971 respondents collected in two suburban corridors in the Lisbon Metropolitan Area. The results support that goal-framing theory is important for explaining the adoption of VTBC travel apps. Gain and normative motives are more relevant than hedonic motives, pointing to the importance of their tangible benefits. Frequent car users may benefit from VTBC travel apps in terms of encouraging behavioral changes, supporting sustainable mobility management solutions. The results also outline the importance of technophilia and the current use of travel apps in influencing the intention to use VTBC apps. Full article
(This article belongs to the Section Sustainable Transportation)
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<p>Conceptual model.</p>
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<p>Structural model—endogenous variables.</p>
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32 pages, 4006 KiB  
Article
Prioritizing Criteria for Establishing a Green Shipping Corridor Between the Ports of Sines and Luanda Using Fuzzy AHP
by Alberto Antonio Bengue, Seyedeh Azadeh Alavi-Borazjani, Valentina Chkoniya, José Luís Cacho and Mariantonietta Fiore
Sustainability 2024, 16(21), 9563; https://doi.org/10.3390/su16219563 - 2 Nov 2024
Viewed by 1070
Abstract
As port authorities and cargo operators seek strategies to reduce carbon emissions while ensuring operational efficiency, some are turning to the concept of green corridors. These solutions aim to establish formalized partnerships among ports, carriers, shippers, and countries. During the process, the stakeholders [...] Read more.
As port authorities and cargo operators seek strategies to reduce carbon emissions while ensuring operational efficiency, some are turning to the concept of green corridors. These solutions aim to establish formalized partnerships among ports, carriers, shippers, and countries. During the process, the stakeholders must consider four priority areas (alternative fuels, bunkering infrastructure, vessel decarbonization pathways, and cargo demand dynamics) from seven angles (environmental, economic, infrastructure, regulatory, operational, technological, and social). This study explores the prioritization of these criteria for establishing a green maritime corridor between two major ports in Portugal and Angola, which would be a significant step toward promoting sustainable global trade. Utilizing the fuzzy AHP, this research analyzes all these factors and their associated sub-criteria derived from a comprehensive literature review and consultations with stakeholders from the Ports of Sines and Luanda. The findings show the dominance of environmental compatibility and economic viability, while social acceptance shows the lowest score. This framework guides the decision-making process for developing a sustainable shipping corridor. The results offer valuable insights for policymakers which can guide them in fostering resilient maritime transport routes, accelerating the adoption of decarbonization strategies and playing a critical role in achieving the IMO’s zero-emission targets by 2050. Full article
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<p>Green corridors map (adapted from [<a href="#B32-sustainability-16-09563" class="html-bibr">32</a>,<a href="#B33-sustainability-16-09563" class="html-bibr">33</a>,<a href="#B34-sustainability-16-09563" class="html-bibr">34</a>,<a href="#B35-sustainability-16-09563" class="html-bibr">35</a>,<a href="#B36-sustainability-16-09563" class="html-bibr">36</a>,<a href="#B37-sustainability-16-09563" class="html-bibr">37</a>]).</p>
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<p>Strategic location of the Port of Sines (adapted from [<a href="#B49-sustainability-16-09563" class="html-bibr">49</a>]).</p>
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<p>Layout of the Port of Sines.</p>
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<p>Layout of the Port of Luanda.</p>
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<p>Schematic diagram of the research methodology.</p>
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<p>Hierarchical structure developed for this study.</p>
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29 pages, 4444 KiB  
Article
A Stochastic Approach to the Power Requirements of the Electric Vehicle Charging Infrastructure: The Case of Spain
by Oscar Castillo, Roberto Álvarez Fernández and Mario Porru
Energies 2024, 17(21), 5314; https://doi.org/10.3390/en17215314 - 25 Oct 2024
Viewed by 599
Abstract
Battery electric vehicles represent a technological pathway for reducing carbon emissions in personal road transport. However, for the widespread adoption of this type of vehicle, the user experience should be similar to that of combustion engine vehicles. To achieve this objective, a robust [...] Read more.
Battery electric vehicles represent a technological pathway for reducing carbon emissions in personal road transport. However, for the widespread adoption of this type of vehicle, the user experience should be similar to that of combustion engine vehicles. To achieve this objective, a robust and reliable public charging infrastructure is essential. In Spain, the electric recharging infrastructure is growing quickly in metropolitan areas but much more slowly on roads and highways. The upcoming charging stations must be located along high-volume traffic corridors and in proximity to the Trans-European Transport Network. The main contribution of this research is to offer a method for examining the essential electricity infrastructure investments required in scenarios involving substantial electric vehicle adoption. The methodology includes a sensitivity analysis of fleet composition and market share, recharging user behavior, charging station density, and vehicle efficiency improvements. To this end, the authors have developed a simplified probabilistic model, addressing the effect of the involved parameters through a comprehensive scenario analysis. The results show that the actual number of high-capacity charging plugs on Spanish roads is significantly lower than the European regulation requirements for the year 2030 considering an electric vehicle market share according to the Spanish Integrated National Energy and Climate Plan 2021–2030 objectives and it is far from the necessary infrastructure to cover the expected demand according to the traffic flow. Under these circumstances, the charging peak power demand reaches over 7.4% of the current Spanish total power demand for an electric vehicle fleet, which corresponds to only 12% of the total. Full article
(This article belongs to the Section E: Electric Vehicles)
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<p>Methodology scheme.</p>
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<p>Probability scheme.</p>
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<p>Hourly traffic intensity distribution (<span class="html-italic">KIH(t)</span>).</p>
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<p>BEV penetration scenarios in Spain and total fleet size from the year 2025 to 2030.</p>
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<p>Proportion of the different types of BEVs in the Spanish fleet mix by the year 2023.</p>
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<p>Required DCFC charging stations for roads and highways from the year 2025 to 2030.</p>
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<p>Required DCFC charging plugs for roads and highways from the year 2025 to 2030.</p>
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<p>Variations in the number of charging plugs per charging station between the years 2025 and 2030.</p>
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<p>Station spacing and number of charging plugs per charging station by the year 2030 (average annual quantity), considering different BEV adoption scenarios.</p>
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<p>Maximum power demand (MW) by year.</p>
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<p>Maximum power demand (MW) and power installed by year.</p>
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<p>Evolution of the expected hourly power demand (MW) from the year 2025 to 2030 to satisfy vehicle charging demands.</p>
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<p>Expected hourly maximum power demand (MW) by the year 2030 to satisfy vehicle charging demands.</p>
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<p>Comparison of the expected hourly power demand (MW) by the year 2030 as stipulated by the regulation and to satisfy vehicle charging demands.</p>
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<p>Charging infrastructure service factor by the years 2025 and 2030 in the regulation case.</p>
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<p>Comparison of the charging plug utilization rate (UR) by the years 2025 and 2030 in the reference scenario to satisfy vehicle charging demands.</p>
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<p>Comparison of the evolution of the number of charging plugs in the reference scenario to satisfy vehicle charging demands and considering a limited service of a minimum of 90%.</p>
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<p>Average number of charging stations by the years 2025 and 2030 in the Spanish autonomous communities. Comunidad de Castilla La Mancha (CM), Comunidad Valenciana (VC), Andalucia (AN), Asturias (AS), Comunidad de Castilla y Leon (CL), Extremadura (EX), Catalunya (CT), Cantabria (CB), Galicia (GA), Aragon (AR), Comunidad de Madrid (MD), Murcia (MC), Navarra (NC), and La Rioja (RI).</p>
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<p>The number of charging plugs in the years 2023, 2025, and 2030 in the Spanish autonomous communities. Comunidad de Castilla La Mancha (CM), Comunidad Valenciana (VC), Andalucia (AN), Asturias (AS), Comunidad de Castilla y Leon (CL), Extremadura (EX), Catalunya (CT), Cantabria (CB), Galicia (GA), Aragon (AR), Comunidad de Madrid (MD), Murcia (MC), Navarra (NC), and La Rioja (RI).</p>
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<p>The average number of charging plugs per charging station by the years 2025 and 2030 in the Spanish autonomous communities. Comunidad de Castilla La Mancha (CM), Comunidad Valenciana (VC), Andalucia (AN), Asturias (AS), Comunidad de Castilla y Leon (CL), Extremadura (EX), Catalunya (CT), Cantabria (CB), Galicia (GA), Aragon (AR), Comunidad de Madrid (MD), Murcia (MC), Navarra (NC), and La Rioja (RI).</p>
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<p>Elasticity of the number of charging plugs with the model parameters.</p>
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<p>Elasticity of the power demand with model parameters.</p>
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23 pages, 10384 KiB  
Article
Promoting Urban Corridors in Saudi City Center to Enhance Walkability Using Multi-Criteria Decision-Analysis Methods
by Mohammed Aloshan, Moustafa Gharieb, Khaled Mahmoud Heba, Ragab Khalil, Mohammed Humaid Alhumaid and Mohamed Salah Ezz
Sustainability 2024, 16(21), 9255; https://doi.org/10.3390/su16219255 - 24 Oct 2024
Viewed by 2374
Abstract
Saudi Arabian cities have rapidly expanded their urban areas, especially their city centers, over the last four decades. This growth has led to increased vehicular usage. As a result, the daily walking experience for residents has been adversely affected. Walkability has several positive [...] Read more.
Saudi Arabian cities have rapidly expanded their urban areas, especially their city centers, over the last four decades. This growth has led to increased vehicular usage. As a result, the daily walking experience for residents has been adversely affected. Walkability has several positive effects on people’s health and the urban environment. It serves as a means of transportation and helps create a sense of place. This enhances the legibility of urban structures and deepens emotional bonds with the city. This study uses the medium-sized Saudi Arabian city of Onaizah as a case study. It explores the feasibility of creating urban walking corridors to encourage more walking. According to Saudi Arabia’s Vision 2030, sustainable urban development and improved quality of life are key priorities. The study addresses walkability as a way to enhance the urban landscape of the city center. Geographic Information Systems (GISs) were used to analyze data and generate urban corridors in the city center. The results indicate that walking in Onaizah can be improved through three urban corridors. These corridors measure 1335 m, 1624 m, and 1937 m, respectively. They represent urban, commercial, and heritage corridors. This provides planners and decision makers an opportunity to prioritize pedestrian connectivity and improve the physical environment. Such efforts contribute to sustainable urban development. Various criteria-analysis methods were employed to assess the factors that led to the conclusion of these urban corridors. This includes evaluations of land use, transportation, and environmental considerations. The study aligns with Saudi Arabia’s Vision 2030 by promoting walking and enhancing overall walkability. It also aims to create a sustainable and livable urban environment for the community in Onaizah. Full article
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<p>Location and pedestrian infrastructure plans of the city center in Onaizah. [Source: The Authors after Onaizah Municipality development project, MOMRA, KSA]. (<b>a</b>) Onaizah pedestrian infrastructure project for the urban core (1439–2018); proposed by the National Physical Planning Strategy; this detailed plan highlights the pedestrian network integrated with the internal ring road. The project aims to enhance walkability within Onaizah’s urban core, improving connectivity and accessibility. [Source: Onaizah Municipality, MOMRA, KSA] [<a href="#B31-sustainability-16-09255" class="html-bibr">31</a>]. (<b>b</b>) Location of extended study area: Onaizah City Center.</p>
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<p>Location and pedestrian infrastructure plans of the city center in Onaizah. [Source: The Authors after Onaizah Municipality development project, MOMRA, KSA]. (<b>a</b>) Onaizah pedestrian infrastructure project for the urban core (1439–2018); proposed by the National Physical Planning Strategy; this detailed plan highlights the pedestrian network integrated with the internal ring road. The project aims to enhance walkability within Onaizah’s urban core, improving connectivity and accessibility. [Source: Onaizah Municipality, MOMRA, KSA] [<a href="#B31-sustainability-16-09255" class="html-bibr">31</a>]. (<b>b</b>) Location of extended study area: Onaizah City Center.</p>
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<p>A multi-layered perspective used for walkability analysis. [Source: the authors].</p>
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<p>Distance grids around walkability criteria: (<b>a</b>) heritage sites, (<b>b</b>) green areas, (<b>c</b>) commercial sites, (<b>d</b>) mosques, (<b>e</b>) vacant parcels, (<b>f</b>) street activities, and (<b>g</b>) street slopes. [Source: the authors].</p>
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<p>Ranked distance grids around walkability criteria: (<b>a</b>) heritage sites, (<b>b</b>) green areas, (<b>c</b>) commercial sites, (<b>d</b>) mosques, (<b>e</b>) vacant parcels, (<b>f</b>) street activities, and (<b>g</b>) street slopes. [Source: the authors].</p>
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<p>Priorities of studied walkability criteria. [Source: the authors].</p>
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<p>Factor for the walkability index in Onaizah City. [Source: the authors].</p>
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<p>Walkability index of the study area. [Source: the authors].</p>
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<p>The result of multi-criteria decision-analysis methods to identify urban corridors throughout Onaizah city center (1, 2 and 3) and its compatibility with proposed municipal upgrading strategic project for urban core’s pedestrian infrastructure. [Source: the authors].</p>
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21 pages, 4962 KiB  
Article
Measurement of Driving Conditions of Aircraft Ground Support Equipment at Tokyo International Airport
by Yuka Kuroda, Satoshi Sato and Shinya Hanaoka
Aerospace 2024, 11(11), 873; https://doi.org/10.3390/aerospace11110873 - 24 Oct 2024
Viewed by 1342
Abstract
With the global increase in air transport demand, the shortage of ground handling personnel to support ground operations at airports has become a major challenge, impacting airport services and causing considerable flight delays. This study presents a novel method to generate trip data [...] Read more.
With the global increase in air transport demand, the shortage of ground handling personnel to support ground operations at airports has become a major challenge, impacting airport services and causing considerable flight delays. This study presents a novel method to generate trip data that specify the origin and destination locations as the purpose of travel for each ground support equipment (GSE) vehicle. The proposed method uses data obtained from comprehensive observations of 2234 GSE vehicles over a 24 h × 7 d time interval at Tokyo International Airport. From these observations and trip data, the characteristics of the driving conditions for each GSE vehicle type, the locations where GSE traffic volume increases in the airport, and changes in the time interval are identified. The primary results show that the GSE traffic volume is the highest mainly around passenger terminals and in the vehicle corridors connecting these terminals, which aligns with the airport’s operational status. Investigating GSE driving conditions, such as the traffic flow throughout an airport, can provide valuable data to improve the efficiency of GSE scheduling and facilitate the introduction of automated driving technology. Full article
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<p>Receiver installation locations.</p>
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<p>Distribution of average GSE speed (passenger transport buses, BUS).</p>
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<p>Rules for moving trips analyzed in this study.</p>
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<p>Rules for turnaround trips. Note: The numbers indicate the point numbers in <a href="#aerospace-11-00873-f001" class="html-fig">Figure 1</a>.</p>
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<p>Examples of GSE detection records.</p>
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<p>Examples of GSE detection records.</p>
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<p>Aggregate results of moving trips for each vehicle type. Note for (<b>c</b>): average of the shortest distance between trips, not considering stopovers. Note for (<b>d</b>): boxes: quartile range, x: average value, top of whiskers: maximum value. the unit of the vertical axis of the graph is “hours: minutes: seconds”.</p>
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<p>Moving trip data (GSE traffic volume after expansion from 6:00 to 20:59 on 21 November). The vehicle corridors covered by the survey are indicated by colors corresponding to the GSE traffic volume.</p>
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<p>Detection time deviation distribution of test beacons.</p>
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<p>Detection time deviation of test beacons at each receiver.</p>
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<p>Relationship between the detection time deviation and distance of the receiver from the intersection center point.</p>
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<p>Map of the area around location ID No. 37.</p>
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<p>List of GSE vehicle types and vehicle classification for analysis. Source: Tokyo Airport Office of East JCAB (Japan Civil Aviation Bureau). Note: Shading indicates vehicle types not included in the survey of actual driving conditions. Note: “Symbols” and “vehicle type classification for analysis” were set independently in this study.</p>
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<p>Number of moving trips by OD between the 53 locations after expansion (trips on 21–27 November). Note: ODs with a higher number of trips are written in red font color.</p>
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20 pages, 15601 KiB  
Article
Integrating Streetscape Images, Machine Learning, and Space Syntax to Enhance Walkability: A Case Study of Seongbuk District, Seoul
by Zhongshan Huang, Bin Wang, Shixian Luo, Manqi Wang, Jingjing Miao and Qiyue Jia
Land 2024, 13(10), 1591; https://doi.org/10.3390/land13101591 - 30 Sep 2024
Viewed by 1034
Abstract
As urbanization rapidly progresses, streets have transitioned from mere transportation corridors to crucial spaces for daily life and social interaction. While past research has examined the impact of physical street characteristics on walkability, there is still a lack of large-scale quantitative assessments. This [...] Read more.
As urbanization rapidly progresses, streets have transitioned from mere transportation corridors to crucial spaces for daily life and social interaction. While past research has examined the impact of physical street characteristics on walkability, there is still a lack of large-scale quantitative assessments. This study systematically evaluates street walkability in Seongbuk District, Seoul, through the integration of streetscape images, machine learning, and space syntax. The physical characteristics of streets were extracted and analyzed in conjunction with space syntax to assess street accessibility, leading to a combined analysis of walkability and accessibility. The results reveal that the central and western regions of Seongbuk District outperform the eastern regions in overall street performance. Additionally, the study identifies four distinct street types based on their spatial distribution: high accessibility–high overall score, high accessibility–low overall score, low accessibility–high overall score, and low accessibility–low overall score. The findings not only provide a scientific basis for street development in Seongbuk District but also offer valuable insights for assessing and enhancing walkability in cities globally. Full article
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<p>Research framework.</p>
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<p>Study area.</p>
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<p>Google Street View image collection. The dots in the figure indicate the locations of the Street View images.</p>
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<p>Spatial distribution of the eight indicators.</p>
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<p>Comprehensive quality distribution map of the street.</p>
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<p>Comprehensive quality heat map.</p>
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<p>Street accessibility distribution in the study area (R1000).</p>
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<p>Coupling analysis of street accessibility and walkability evaluation. (<b>a</b>) High accessibility–high overall score. (<b>b</b>) High accessibility–low overall score. (<b>c</b>) Low accessibility–high overall score. (<b>d</b>) Low accessibility–low overall score.</p>
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<p>Representative Street View imagery for four coupling types.</p>
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21 pages, 1343 KiB  
Review
Efficient Operation of Metropolitan Corridors: Pivotal Role of Lane Management Strategies
by Ana Maria Rivadeneira, Juan Benavente and Andres Monzon
Future Transp. 2024, 4(3), 1100-1120; https://doi.org/10.3390/futuretransp4030053 - 20 Sep 2024
Viewed by 1737
Abstract
Lane management strategies are vital for solving traffic congestion and improving transportation efficiency in metropolitan corridors. These corridors, which facilitate economic and social interactions by connecting major urban areas, face significant challenges such as congestion, environmental concerns, and the need for sustainable growth. [...] Read more.
Lane management strategies are vital for solving traffic congestion and improving transportation efficiency in metropolitan corridors. These corridors, which facilitate economic and social interactions by connecting major urban areas, face significant challenges such as congestion, environmental concerns, and the need for sustainable growth. Effective lane management involves techniques such as HOV lanes, HOT lanes, reversible lanes, and dynamic toll pricing, which have been implemented worldwide. This study addresses the questions ‘What are the benefits and limitations of lane management strategies in metropolitan corridors?’ and ‘When should decision-makers consider implementing lane management strategies in a metropolitan corridor?’ This paper aims to evaluate lane management strategies to increase the multimodal efficiency of metropolitan corridors. A systematic literature review of case studies reveals that while these strategies significantly reduce congestion and emissions, they also face road safety, compliance, and public resistance issues. In addition, gaps in existing research on metropolitan corridors and lane management will be identified, and areas for future research are proposed. The impacts of new societal trends and evolving urban planning concepts are examined. The study highlights the need for adaptive planning and innovative solutions. Full article
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<p>The methodological framework of the review process.</p>
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<p>Co-occurrences network based on the abstracts of the literature reviewed for this work.</p>
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<p>Lane Management Strategies.</p>
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20 pages, 8266 KiB  
Article
Characteristics and Effects of the Last Kilometre of the Tourist City from the Dynamic and Static Perspectives
by Yajun Xiong, Xinwei Guo and Junbo Gao
Sustainability 2024, 16(18), 8129; https://doi.org/10.3390/su16188129 - 18 Sep 2024
Viewed by 714
Abstract
The accessibility of the “last kilometre” of a tourist city has a profound impact on the travelling experience of tourists. In-depth understanding of the characteristics and spatial effects of the “last-kilometre” traffic accessibility in tourist cities is conducive to further enhancing the accessibility [...] Read more.
The accessibility of the “last kilometre” of a tourist city has a profound impact on the travelling experience of tourists. In-depth understanding of the characteristics and spatial effects of the “last-kilometre” traffic accessibility in tourist cities is conducive to further enhancing the accessibility of traffic travel and forming a new industry development pattern of deep integration of traffic and tourism. The results show that: (1) Private transport accessibility is significantly better than public transport accessibility, and the strong economic strength of large cities such as Peking, Shanghai, and Nanjing support a wider coverage of public transport compared with cities such as Qinhuangdao, Dalian, Ningbo, etc. Even for the middle-income and high-income groups of the large cities, the advantage of the broader travelling cost of public transport is still significant. (2) The average values of the fluctuation coefficients of travel time of public transport in tourist cities are all smaller than those of private transport, and public transport is less sensitive to traffic congestion, making it a more reliable choice for tourist travel. The higher number of public transport grids with more anomalous fluctuations and much larger fluctuations than private transport grids suggests that there is an urgent need to strengthen the standardisation of public transport services in the corresponding areas. (3) Urban tourism development has been moving from single-line to network development, and the impact of urban transport on urban–regional tourism development has been manifested in the place fission effect, corridor diffusion effect, and regional equilibrium effect. In general, our findings have been useful in understanding the accessibility characteristics of the “last kilometre” in tourist cities, optimizing the efficiency of inter-regional and intra-city transport connections, constructing a fast and convenient travel transport system, improving the accessibility of transport trips, and forming a new development pattern for the deep integration of transport and tourism. Full article
(This article belongs to the Special Issue Integrating Tourism Development into Urban Planning)
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<p>Diagram of the theoretical logical framework.</p>
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<p>Population distribution and main traffic routes in tourist cities (Peking).</p>
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<p>Data collection process diagram.</p>
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<p>Fluctuation analysis of average time and coefficient of variation of tourist trips by public transport and private transport. The <span class="html-italic">Y</span>-axis for city-1 is the average tourist travel time, and the <span class="html-italic">Y</span>-axis for city-2 is the coefficient of variation of tourist travel time.</p>
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<p>Characteristics and proportion distribution of traffic connections to destinations. <span style="color:#00B0F0">Blue</span> column was the public transport sectional frequency. <span style="color:#ED7D31">Orange</span> column was the segmental frequency for private transport. Blue solid line was the cumulative frequency of public transport. <span style="color:#ED7D31">Orange</span> solid line was the cumulative frequency of private transport. Blue dotted line was the mean value of the coefficient of variation for public transport. <span style="color:#ED7D31">Orange</span> dotted line was the mean coefficient of variation of private transport.</p>
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<p>Long-period dynamic spatial characteristics of traffic.</p>
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19 pages, 3517 KiB  
Article
Flight Schedule Optimization Considering Fine-Grained Configuration of Slot Coordination Parameters
by Jingyi Yu, Minghua Hu, Zheng Zhao and Bin Jiang
Aerospace 2024, 11(9), 763; https://doi.org/10.3390/aerospace11090763 - 17 Sep 2024
Viewed by 801
Abstract
In response to the rapid growth of air passenger and cargo transportation services and the sharp increase in congestion at various airports, it is necessary to optimize the allocation of flight schedules. On the basis of reducing the total airport delay time and [...] Read more.
In response to the rapid growth of air passenger and cargo transportation services and the sharp increase in congestion at various airports, it is necessary to optimize the allocation of flight schedules. On the basis of reducing the total airport delay time and ensuring the total deviation of flight schedules applied by airlines, it is necessary to consider finely configuring flight schedules with slot coordination parameters, introducing a 5 min slot coordination parameter, and optimizing airport flight schedules in different time periods. This article considers factors such as flight schedule uniqueness, corridor flow restrictions, and time adjustment range limitations to establish a three-objective flight-schedule refinement configuration model, which is solved using the NSGA-II algorithm based on the entropy weight method. Taking Beijing Capital International Airport as an example, the optimized results show that the total flight delay was reduced from 4130 min to 1142 min, and the original delay of 389 flights was reduced to 283 flights. Therefore, flight schedule optimization considering the fine-grained configuration of slot coordination parameters can effectively reduce airport delays, fully utilize time resources, and reduce waste of time slot resources. Full article
(This article belongs to the Section Air Traffic and Transportation)
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<p>The Flow of the NSGA-II algorithm.</p>
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<p>Hourly arrival and departure traffic flow.</p>
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<p>Daily equivalent hour.</p>
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<p>The 15 min arrival and departure traffic flow.</p>
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<p>The 5 min arrival and departure traffic flow.</p>
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<p>The variation in each objective function with the number of iterations.</p>
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<p>Pareto diagram.</p>
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<p>Comparison of optimization results for departure peak flights.</p>
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<p>Optimized hourly arrival and departure traffic flow.</p>
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<p>Optimized 15 min arrival and departure traffic flow.</p>
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<p>Optimized 5 min arrival and departure traffic flow.</p>
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<p>Comparison of the number of arrival flights in 5 min time slots in all directions before and after optimization.</p>
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<p>Comparison of the number of departure flights in 5 min time slots in all directions before and after optimization.</p>
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