Different Modes Of Transport Research Articles

The Impact of the U.S.-China Trade War on Air and Ocean Shipments

This paper estimates the impact of the U.S.-China trade war and the consequent increase in trade costs on air and ocean shipments between the two countries. Using panel data covering U.S. exports and imports with its trading partners from 2016 to 2021, we estimate gravity models and find evidence showing negative impacts of the trade war on both U.S. imports from China and U.S. exports to China. However, there are differential impacts on air shipments and ocean shipments. Specifically, we find that U.S. tariff increases on Chinese goods primarily had a negative effect on air imports from China, whereas China’s retaliatory tariffs on U.S. goods mainly had a negative impact on U.S. ocean exports. These findings contribute to the growing body of evidence on the effects of the U.S.-China trade war, highlighting the varying impacts of the trade war on different modes of transportation that drive the U.S.-China trade relationship.

An extended substrate spectrum of the proton organic cation antiporter and relation to other cation transporters.

Most central nervous system (CNS) active drugs are organic cations, which need carrier proteins for efficient transfer through the blood-brain barrier (BBB). A genetically still unidentified proton organic cation (H+/OC) antiporter is found in several tissues, including endothelial cells of the BBB. We characterized the substrate spectrum of the H+/OC antiporter and the overlap in substrate spectrum with OCTN1, OCTN2 or OCT3 by screening 87 potential substrates for transport activity. Based on high antiport rates, 45 of the tested substances were substrates of the H+/OC antiporter. They included antidepressants (like tranylcypromine or nortriptyline), antipsychotics (like levomepromazine) and local anaesthetics. Concentration-dependent transport was confirmed for 38 of the substrates. Transport uptake depending on a pH gradient across the cell membrane confirmed that 43 drugs were indeed substrates of the H+/OC antiporter. However, the patterns of pH dependence differed between the substrates, possibly indicating different modes of transport or the existence of multiple antiporter proteins. The substrate overlap between the H+/OC antiporter and OCTN1, OCTN2 or OCT3 was minimal, indicating that the latter three are not the proteins underlying the H+/OC antiporter activity. Overall, about 50% of positively charged drugs may be substrates of the antiporter, which may be the most important membrane transport protein for many drugs.

A Security Framework for Railway Platform Development

The different modes of transport are air, water, and land transport, in which land transport includes rail transport, road transport and off-road transport. Most commonly using transport system are Roadways, Railways and Airways. In these frequently we use the railways, because it is cheaper and it is more convenient than other transport systems. The third largest railway network in the world is Indian railway network. But the accident’s occurs in the railways is higher. Mostly the accidents in the railway station occur between the railway platform and to the train, because of the platform gap. The platform gap is the gap exists between the train and to the platform. To avoid these accidents that the Indian government come with an indicative to increase the height of the platform. But it is not easy job to increase the height. At the time of working we cannot access the platforms. By applying my project it is easy to avoid the accidents as well as we can use the platform too. A human fall down in the gap exist between the platform and to the train can be totally avoided by introducing Mechanical platform edge extensions known as platform gap fillers which is used to bridge the gap between platform and to the train. This is more useful in the case of safeguard the human life and also it is cheaper than the cost which is involved for increase the height of the platform. In this regard the safety barrier setup present at the bottom of the platform will be automatically uplifted with the help of sensor, so the platform gap is closed with the safety barrier. And then it will retract again into the bottom at the platform after leaving the station. By this project the platform gap accidents can be avoided.

Sustainable Mobility as a Service: A Scientometric Review in the Context of Agenda 2030

City planners are facing an emergency to develop, promote, and implement actions that allow the mobility needs of people and businesses in cities (and their surroundings) to be satisfied to assure a better quality of life. Among the different actions to promote, there is public transport, which should be the cornerstone of sustainable urban mobility. The only way to achieve the transition from private to public is by integrating services into a multimodal network and then encouraging interchange between different modes of transportation. In this context, the development of mobility as a service (MaaS) solutions is significant, and different studies have been developed in recent years. The paper thus introduces a scientometric review of such a topic in relation to the Sustainable Development Goals of Agenda 2030. The study focuses on the current state of MaaS implementation, trends, and research gaps, with an in-depth analysis of emerging themes, based on 819 documents selected from the WoS and Scopus databases. Introducing the database, and research methodology, an accurate interpretation of the data generated by the bibliometric analysis, and the primary evaluation parameters are outlined. The identified studies have been then categorized into three thematic groups with the intention of offering a comprehensive study that identifies the shortcomings and difficulties in the research carried out in these areas up to today. Particular attention is paid to how this research relates to the Sustainable Development Goals.

Comparative analysis of particle exposure in commuters: Evaluating different modes of transportation in Tehran

Daily commuting significantly contributes to the overall exposure to particulate matter (PM) in urban areas, underscoring the need to understand the factors influencing PM exposure. This study assessed personal exposure levels and inhalation doses of PM2.5, and PM10 across various transportation modes in Tehran, Iran. The study included buses, open-window taxis, subways, walking, and cycling for over 125 trips. Data were collected during the morning and evening peak hours using low-cost sensors, with an average trip distance of 7.50 km. On average, buses exhibited the highest mean PM2.5 concentration (25.0 μgm3), followed by subways (17.0 μgm3), taxis (14.4 μgm3), cycling (13.5 μgm3), and walking (8.80 μgm3). Pearson correlation analysis showed a strong relationship between traffic volume and PM concentrations in taxi and bus modes (r = 0.78 and 0.56, respectively). Subway commuters experienced the lowest PM2.5 inhalation dose (2.50 μg), whereas bus commuters experienced the highest (6.20 μg). Pedestrians had the highest average inhalation dose of PM2.5 with 20.7 μg due to longer trip durations. The daily average PM2.5 levels in all transportation modes exceeded the WHO thresholds by 1.60 times. These findings offer crucial insights into personal exposure concentrations among commuters and serve as a basis for effective air quality management plans and broader global investigations of air pollution.

Adding a Cultural Lens to Active Transport Initiatives: Māori and Pacific Adolescents’ Perceptions of Transport to School

In Aotearoa/New Zealand, there is government directive and community support to focus on health equity in research and health promotion. Culturally responsive policies and services are expected. The purpose of this research is to describe Māori and Pacific adolescents’ perceptions of different modes of transport to school (walking, cycling, busing and being driven/driving) rather than to compare perceptions between different ethnic groups through a deficit lens which is commonplace. Reporting findings in this way is so that equitable approaches to policy, and initiatives for active transportation to school can be considered. This study analysed data from adolescents (age 13 to 18 years) (n = 3608) who completed an online survey at school as part of the BEATS Research Programme in the city of Dunedin, New Zealand. In addition, four focus groups were conducted with Māori and Pacific adolescents. Overwhelmingly, adolescents across all ethnic groups had similar perceptions of walking, cycling, being driven/driving and busing to school. This similarity means that a whole of population approach to policy would be sufficient when combined with good quality overarching cultural responsiveness imbedded to support equity for Māori and Pacific adolescents. Findings specific to Māori and to Pacific adolescents are reported which will enable policy makers to consider additional cultural nuances in the active transport space.

Do Users Prefer Particular Public Bus Transport Operators in Bhopal, India?

This paper focuses on the unique situation of users’ preferences when choosing between different Public Bus Transport Operators (PBTOs) in Bhopal. While many studies have examined the choice between different modes of transport (such as choosing a car over a bus), the factors that lead users to prefer one PBTO over another—despite similar characteristics—have not been studied. This paper analyzes these differences in preference through travel behavior attributes. It also explores how the three PBTOs in Bhopal serve the daily mobility needs of different segments of the population and reveals the factors influencing users’ choice of one PBTO over another.

Review of public transportation integration and modeling strategies: Toward seamless urban mobility

To solve the issues of expanding urbanization, traffic congestion, and environmental sustainability, public transportation system integration has become a crucial area of concern for urban planners and legislators. This paper discusses the concept of integrating different modes of transportation and the necessity of using a reliable modeling strategy to enhance and optimize urban mobility networks generally. The implementation and efficiency of integrated public transportation systems in several cities are examined in this research paper. The study focuses on a number of notable case studies of various cities that have made substantial efforts to integrate multiple modes of transportation to enhance urban mobility. This study provides a thorough overview of the advantages, difficulties, and potential solutions associated with integrated public transportation as it exists today and as it is currently being modeled. The research also examines several modeling strategies for integrated transport system design and optimization. This study seeks to provide significant insights into the current status of integrated public transportation, identify research gaps, and propose viable pathways for future research and development by synthesizing literature and case studies. Information for the analysis was gathered from the Web of Science, Scopus, Science direct, MDPI Publisher database spanning the years 2000 to 2024. The article collected a total of 624 bibliometric records of publications. Both quantitative and qualitative analyses were conducted as part of the study. This paper conducts a literature review focusing on the latest research concerning the Integration of public transportation-related subjects. It employs scientific databases, a specified list of keywords, and established inclusion criteria to gather data, assess content, and conduct a bibliometric analysis.

Innovators and transformers: a benchmarking study of online carbon emission calculators for freight transport

PurposeCarbon emissions commonly serve as an indicator for environmental friendliness, and so more and more carbon emission calculators (CECs) are offered that allow an estimation of the environmental footprint of freight transport operations. Unfortunately, their exact measurement is challenging due to the availability or poor quality of necessary input data and a multitude of possible calculation methods that may result in highly inaccurate to very misleading figures.Design/methodology/approachA structured online search was conducted to identify suitable online carbon emission calculators (OCECs) for further assessment in the form of a benchmark case that includes different modes of transport from road and rail to air and sea between China and Europe. Further comparison resulted in a ranking of OCECs along the categories of transparency (routing system, data sources and calculation method), completeness (input options) and accuracy (data output).FindingsDifferent predefined inputs and calculation methods employed by the OCECs assessed inevitably result in a wide spread of more or less reliable carbon footprint measurement results.Practical implicationsAll potential users of CECs, including policymakers, actors from the transport industry and other stakeholders, are well advised to question greenhouse gas (GHG) emission statements that are not backed by transparent procedures and internationally recognized calculation standards.Originality/valueThis study, including a benchmark case and a ranking, offers a guideline for potential users of CEC to avoid major pitfalls coming along with the present carbon footprint measurement of freight transport operations.

Urban Odyssey: “Pioneering multimodal routes for Tomorrow's smart cities”

Getting around in modern cities has become a daily puzzle for both residents and travelers. As cities increasingly evolve into complex hubs of innovation and development, the demand for efficient transportation solutions has never been higher. In the multifaceted field of urban transportation, cost-effective and efficient mobility remains a high priority. This paper looks at how cities are planning better ways for people to travel and move within the growing scope of multimodal transportation, a paradigm shift beyond traditional single-mode transit systems. Our approach to improving urban transport revolves around a few key principles: integration, innovation, and collaboration. Integration means bringing together different modes of transportation – like buses, trains, bikes, and even new technologies like ride-sharing services to make it easier for people to switch between them. This transformative approach not only aims to reduce congestion and reduce environmental footprints but also prioritizes user experience while ensuring a harmonious blend of convenience, sustainability, and accessibility. We use new technology and ideas to ensure that travel is easy, quick, and good for the environment. Looking at new trends and examples from around the world, this overview shows how cities are shaping a better future for everyone's daily commute. In this paper, we use Lingo software to solve a numerical example related to multi-modal transportation, demonstrating practical solutions for real-world implementation. Through innovation, we can find creative solutions to urban transportation challenges. Additionally, public transportation enhancements, such as the introduction of synchronized bus routes and electric vehicle charging stations, underline the commitment to sustainability and inclusivity. In the dynamic urban transportation landscape, cities will revolutionize our approach to providing cost-effective and efficient mobility solutions.

A Multiperiod, Multicommodity, Capacitated International Agricultural Trade Network Equilibrium Model with Applications to Ukraine in Wartime

The world is facing immense challenges because of increasing strife and the impacts of climate change with accompanying disasters, both sudden-onset as well as slow-onset ones, which have affected the trade of agricultural commodities needed for food security. In this paper, a multiperiod, multicommodity, international, agricultural trade network equilibrium model is constructed with capacity constraints on the production, transportation, and storage of agricultural commodities. The model allows for multiple routes between supply and demand country markets, different modes of transport, and storage in the producing and consuming countries as well as in the intermediate countries. The generality of the underlying functions, coupled with the capacity constraints, allow for the modeling of competition among agricultural commodities for production, transportation, and storage. The capacity constraints also enable the quantification of various disaster-related disruptions to production, transportation, and storage on the volumes of commodity flows as well as on the prices. A series of numerical examples inspired by the effects of Russia’s full-scale invasion of Ukraine on agricultural trade is presented, and the results are analyzed to provide insights into food insecurity issues caused by the war.

Spatial Allocation Rationality Analysis of Medical Resources Based on Multi-Source Data: Case Study of Taiyuan, China.

Reasonably allocating medical resources can effsectively optimize the utilization efficiency of such resources. This paper took Taiyuan City as an example and established a model to evaluate the rationality of medical resource spatial allocation, incorporating two key dimensions: the spatial layout and the supply and demand of medical resources. In terms of the spatial layout, three indexes were included: Firstly, the service coverage rates of different levels of medical institutions, based on residents' medical orientations, were calculated using network analysis methods. Secondly, the Huff-2SFCA method was improved to calculate the accessibility of medical resources for four different modes of transportation. Then, the Health Resource Agglomeration Degree (HRAD) and Population Agglomeration Degree (PAD) were used to quantify the equity of medical resources. In terms of the supply and demand of medical resources, one index was included: the supply-demand ratio of medical resources during sudden public health events, which was calculated using the number of beds per thousand people as an indicator. These four indexes were weighted using the entropy weight method to obtain the rationality grade of medical resource spatial allocation in Taiyuan City. The study found that the rationality evaluation level of medical resource allocation in the central urban area of Taiyuan City followed a "concentrically decreasing" pattern. The rating ranged from "very reasonable" to "less reasonable", with the area of each level expanding gradually. The areas rated within the top two categories only accounted for 19.92% of the study area, while the area rated as "less reasonable" occupied 38.73% of the total area. These results indicate that the model accounted for residents' travel for various medical orientations and the availability of resources during public health emergencies. It considered both the spatial layout and supply and demand of medical resources, offering recommendations for the precise allocation of urban medical resources.

‘Watch the closing doors’- material interpellation, mobility affordance, and passenger sensations

The multi-sensorial and embodied experiences of ‘being transported’ as passengers are an important, but at times underemphasized, theme in transport policy and planning. Asking the key question ‘how does it feel?’ seems straight forward and yet still hard to accommodate in the realm of planning and transport policies. However, if the ‘way that we feel’ is what attunes us to be attracted (or the opposite) to different modes of transport, then the affective, embodied, and sensorial qualities of buses, subways, airplanes, and ferries is more than an issue of ‘comfort’ and competitive advantage (even though this is a central concern for public transport agencies in the post-covid 19 context). Rather, we should understand how the enrolment of human bodies into infrastructural systems and mobility technologies shape our experiences in the everyday life. This paper hones in on a few theoretical concepts developed under the umbrella of ‘mobilities design’. Seen as a field of ‘material pragmatism’ it presents concepts such as ‘material interpellation’, ‘mobility affordance’, ‘extended bodies’, and ‘osmosis’ as part of a vocabulary enabling a more granular understanding of how we experience the world as passengers.

Perceived Accessibility: Impact of Social Factors and Travel Modes in Melbourne’s West

Accessibility is commonly defined and operationalised through objective measurements, such as travel time and physical distance to destinations; however, there is a lack of empirical studies capturing perceived accessibility from individual perspectives. With the aim of sustainable transport for inclusive communities, it is crucial to investigate the impact of socio-economy and travel mode on perceived accessibility and key driving factors of perceived safety and service quality. Through the collection of primary data from one of the fastest-growing suburbs in Melbourne, this study examined variation of perceptions towards accessibility, safety, and service quality among diverse social groups and travellers using different modes of transport. The findings of this study would assist transport planners in making informed decisions in creating inclusive transport networks that can improve community health and well-being.

A multi-dimensional access index: Exploring emergency food assistance in New York City

Access to resources and services needs to be considered from a multi-dimensional perspective to capture the complex landscape of human experience. The robust body of research exploring food access has multiple limitations that create an incomplete view of food access, like studies limited to only one mode of transit and inconsistent methods across studies which limit generalizability. This study proposes a framework to formulate a multi-dimensional access index that considers travel time, operating hours, and availability of transit infrastructure across space. We use food pantries in New York City as a case study since there are relatively few of them and they have limited opening hours. We propose an index that quantifies spatiotemporal access by different modes of transportation and takes operating hours of food pantries into account during a one week time period. We compare our results to two traditional access measures and demonstrate that our index provides a significantly different measure of access. We utilize this index to highlight areas of high need but low resources, which shows the importance of this tool to policy makers and service providers. We use our experience of developing this index to highlight the challenges with quantitative analysis of human experience. Our tool is reproducible through an open-access software, which allows researchers and policy-makers to utilize it with parameters that reflect their communities.

Mobility on demand in the United States – Current state of integration and policy considerations for improved interoperability

The concept of Mobility on Demand (MOD) aims to create a safe and convenient ecosystem for transportation and goods delivery. Despite offering various services, the integration and seamless data exchange among different modes of transportation remain challenging. To address this, research was conducted to examine the current state of integration in the MOD ecosystem, identify gaps in data exchange, and propose policy considerations. The research highlighted the limited integration and inconsistent data structures in the United States (U.S.), attributed to the absence of policy directives and high costs of traditional standards development. Industry-led initiatives are driving progress in standards and specifications. Deep linking and deep integration were distinguished, emphasizing the importance of a truly user-centric MOD solution. Emerging mobility models leveraging blockchain technology show promise in facilitating efficient data sharing and collaboration among various operators. Transportation policy makers play a crucial role in supporting open-source standards and integration efforts. An initial framework utilizing open-source efforts such as Transport Operator Mobility-as-a-service Provider (TOMP), Mobility Data Specification (MDS), General On-demand Feed Specification (GOFS), Transactional Data Specification (TDS), Operational Data Standard (ODS), and City Data Standard for Mobility (CDS-M) was proposed to drive the advancement of scalable and user-centric MOD systems.

Clinical outcomes of the neonates with critical pulmonary stenosis: intrauterine versus postnatal transport.

Pulmonary stenosis (PS) is one rare congenital heart disease (CHD) featuring obstruction of right ventricular outflow tract. Critical pulmonary stenosis (CPS) is neonatal PS having cyanosis and evidence of patent ductus arteriosus (PDA) dependency. There is limited data on the clinical outcomes of CPS with different modes of transportation. This study aimed to investigate clinical features and outcomes of CPS through the intrauterine transport (IT) and postnatal transport (PT). Single-center retrospective research was performed. Neonates with CPS were grouped into the IT group and PT group. Clinical characteristics and outcomes of the neonates were compared between the two groups. Totally 110 neonates with PS were included in this study, 77 with CPS and 33 with non-CPS. In the infants with CPS, there were 53 and 24 in the IT and PT group respectively. Echocardiography showed that transvalvular pulmonary gradient (TVG) stayed lower in the IT group than that in the PT group {77.0 [interquartile range (IQR), 60.5-91.5] vs. 92.0 (IQR, 73.3-125.0) mmHg, P=0.006}. Levels of serum N-terminal pro-brain natriuretic peptide (NT-proBNP) and troponin I also remained lower in the IT group than those in the PT group [2,256 (IQR, 1,054-4,527) vs. 3,708 (IQR, 2,138-6,789) pg/mL, P=0.02; 0.020 (IQR, 0.011-0.034) vs. 0.042 (IQR, 0.027-0.072) ng/mL, P<0.001, respectively]. All infants with CPS received percutaneous balloon pulmonary valvuloplasty (PBPV) therapy in neonatal period and were discharged from the hospital. Length of hospital stay remained shorter in the IT group than that in the PT group [13.0 (IQR, 11.0-15.0) vs. 15.5 (IQR, 10.8-22.8) days, P=0.03]. IT and early management after birth could effectively reduce the severity of CPS before PBPV treatment and shorten the length of hospital stay among neonates suffering from CPS.

Research on optimization of multimodal hub-and-spoke transport network under uncertain demand

In the cargo transportation system, the hub-and-spoke transport network can make full use of the scale effect between logistics hubs and reduce logistics costs. Joint transportation of multiple modes of transportation can give full play to the advantages of different modes of transportation, which not only reduces logistics costs but also improves transportation efficiency. Therefore, this paper combines the advantages of multimodal transportation and hub-and-spoke network, and establishes an optimization model of multimodal hub-and-spoke transport network under demand uncertainty. The model takes into account hub capacity constraints and customer satisfaction with respect to transportation time, and to facilitate the model solution, we utilize the fuzzy expected value method and the fuzzy chance constraints based on credibility to clarify the uncertain variables in the model. We use mixed coding to describe the selection of hubs, assignment of nodes, and choice of transportation modes in this study and use the NSGA-II algorithm with local reinforcement to solve the problem. Finally, numerical experiments are designed to verify the validity of the model and algorithm through sensitivity analysis of relevant parameters, determine the reasonable number of hubs and confidence level, and obtain the influence of the change of hub capacity limit and the ratio of single and double hub transit on the research objectives. The results show that: the NSGA-II algorithm with local reinforcement can significantly improve the convergence speed of the algorithm; There is benefit inversion between economic cost and time cost, and the pursuit of economic cost minimization and time cost minimization, respectively, will lead to different choices of the number of hubs; Increasing the ratio of goods transfer between hubs is beneficial for fully utilizing the scale effect between hubs, achieving the goal of reducing economic costs, but at the same time, it will increase time costs.

Analysing intermodal connectivity for the functionality of Namibia’s regional logistics hub

Background: In today’s interconnected global economy, logistics and supply chain management are pivotal in facilitating the movement of goods and services across regions. Supply chains have become increasingly complex, involving multiple stakeholders, diverse transportation modes, and intricate global networks. The efficient management of these supply chains has emerged as a critical determinant of competitiveness and economic growth for businesses and nations.Objectives: The study aims to analyse the level of intermodal connectivity and how it enhances the functionality of a regional logistics hub using Namibia as a case study.Method: The research study adopted a mixed-method design, collecting data through interviews, questionnaires, and documentary analysis to examine intermodal connectivity and its impact on the functionality of the Namibian regional logistics hub.Results: The study’s key findings reveal a fragmented railway system and a significant reliance on road transportation within the Namibian transport system. The level of intermodality is found to be low, indicating limited connectivity and integration between different modes of transport in Namibia.Conclusion: The study highlights the need to address the fragmentation within the railway system, reduce the heavy reliance on road transportation, and improve intermodal connectivity to enhance the functionality and efficiency of the Namibian transport system.Contribution: This research contributes to the existing knowledge of transportation and logistics hubs within the Namibian context. By exploring the role of intermodal connectivity, the study builds upon the theoretical frameworks of transport geography, logistics management, and infrastructure planning.

Exploring Community Readiness to Adopt Mobility as a Service (MaaS) Scheme in the City of Thessaloniki

Mobility as a Service (MaaS) is a new mobility solution that brings together different modes of transportation, such as car-sharing, public transport, taxis, and bicycles, to create personalized service packages for commuters. The present study aims to identify key factors affecting the adoption of a Mobility as a Service system, and to explore the extent to which a local community is ready to accept the implementation of MaaS. The case study investigates the city of Thessaloniki, which is the second largest urban agglomeration in Greece. This study applies a triangulation approach by combining quantitative and qualitative analysis, providing a comprehensive understanding of the opportunities and the challenges arising with the implementation of a MaaS system in the city of Thessaloniki. Furthermore, the utilization of MaaS as a tool for vulnerable people, a crucial aspect that has not been analyzed properly in the existing literature, is examined. A quantitative survey analysis was conducted, inferential statistics were applied, and a binary logistic regression model was developed to determine the significant characteristics that most affect citizens’ willingness to use a MaaS system. In addition, stakeholders were interviewed to examine their readiness to promote and collaborate for the development of a MaaS system. Results showed that age, driving license, daily time spent on urban trips, the frequency of commuting as car passenger or by public transport (PT), previous usage of a MaaS system, and the number of family members seem to be the most influential factors of citizens’ choice to adopt MaaS. For stakeholders, the quality of service provided, and the user friendliness of the system are necessary prerequisites. The findings reveal that the views of residents and stakeholders provide some positive foundations for the development of a MaaS system in the city.