Transportation Network System Research Articles

Transport accessibility and efficiency of PHC location in Kanyakumari district, Tamil Nadu

Transportation is an essential feature of modern economics. In general terms, as an economy grows and develops, it becomes more dependent on its transport sector. The efficient location of any PHC center mainly depends on the network pattern. The study area, Kanniyakumari, is the southernmost district of Tamil Nadu. Kanyakumari District lies between 77°15’ and 77°36’ of eastern longitude and 8°03’ and 8°35’ of northern longitude. The study area has 83 nodes and 120 edges in the transport network system. The main objectives of the paper are to analyze the variation in the degree of connectivity, accessibility, and nodal efficiency of the network pattern and to assess the relationship between road network structure and the location of the PHC center. (Primary Health Care). The present study depends on secondary data. The secondary sources were collected from various transport offices and institutions. Cartography mapping and buffer analysis are used by GIS software. The quantitative research approaches in network analysis were measures to determine the spatial structure, associate number, route development, nodal efficiency, and accessibility of a given PHC location. The Shimbels shortest path matrix was used to identify the health centrality of a node in the network, and its minimum accessibility was found for each PHC center. The detour index was computed based on knowing the route for existing network systems. The present study aims to understand the characteristics of the road transport network in relation to the structural location of the PHC of connectivity, accessibility, and route efficiency in Kanniyakumari district.

Development of a new intelligent instrument for visibility and turbulence meteorological environment parameters in traffic network

The number of transport network systems in the world is increasing and the transport network passes through different geographical environments, there is an urgent need to develop an environmental meteorological monitoring equipment for the transport network security. So, in this study, a new intelligent instrument for monitoring the visibility and turbulence meteorological environmental parameters (temperature, pressure, humidity, etc.) of traffic networks (IVMPT) is developed. The feasibility of simultaneous measurement of visibility, turbulence and various meteorological elements is verified. The atmospheric visibility is measured based on the extinction principle and the atmospheric turbulence in a certain range based on the light intensity scattering principle. The commercial Visibility instrument (DNQ2-1) and Micro-temperature Sensor are used to compare with our new instrument. The results show that the difference between the visibility and turbulence measurements and the comparison instrument is 3% and 8.4%, respectively. After comparative examination, the new instrument meets the design requirements. In addition to environmental meteorological monitoring applications in the transport network, the instrument provides a new scientific instrument for the study of aerosol-turbulence interactions in basic science issues.

System Fragility Analysis of Bridges Based on Response Variables Dimensionality Reduction

Earthquake resistance of bridge structures is an important part of ensuring the functionality of transportation network systems. The structural system of a bridge is composed of multiple components, and the damage of different components may affect the function of the bridge, while the system seismic fragility analysis provides an effective way to evaluate the overall seismic performance of the bridge. In the past, the failure probability of a system is often estimated by the correlation between components, but the complex correlation between components brings certain difficulties to the actual calculation. In this paper, an efficient, accurate and universal method of system fragility analysis is proposed. This method decouples the correlation between components from the perspective of relative damage, adopts the critical demand-to-capacity ratio as the response variable of the system, realizing the dimensionality reduction of the response variables and simplifying the system fragility analysis from high-dimensional fragility analysis to one-dimensional fragility analysis. This methodology offers a viable solution to the challenges posed by the wide estimation of fragility boundaries in the boundaries estimation method and the complexities involved in analyzing correlation of components in the joint probability method. Comparison with traditional methods indicates that the proposed method exhibits high efficiency and convenience, making it suitable for practical engineering applications in system fragility computation. The proposed method holds great potential for future applications in the field of complex bridge structure fragility analysis, large-scale regional seismic damage prediction, rapid assessment, and beyond.

Analysis of the Influence of Public Transport Fleet on Regional Development through Community Accessibility and Road Connectivity in the City of Lhokseumawe

Currently, a new concept in the transportation system has developed, namely a sustainable transportation system. The purpose of this research is to analyze the effect of the public transportation network system on community connectivity in Lhokseumawe City. The analytical method used in this research is a descriptive quantitative method using primary and secondary data. Quantitative descriptive is a type of research that is used to analyze data by describing or describing the data that has been collected as it is. This research uses multiple linear regression analysis tools. The results showed that the number of fleets, passenger capacity, routes had a positive and significant effect on the accessibility of the people in Lhokseumawe City. The number of fleets, passenger capacity and public transport routes have a positive and significant effect on community connectivity. The results of research on community accessibility and road transportation connectivity have a positive and significant effect on the development of the Lhokseumawe City area.

Preface

The 10th International Conference on Environmental and Engineering Geophysics (ICEEG) is hosted by China University of Geosciences, Beijing, China, from June 07-12, 2023. Held biennially since 2004, the ICEEG Conference is one of the most important events for geophysical research and applications in environmental and engineering. Drawing together scientists, engineers, industrial delegates and end-users, the conference is a place to see all of the advanced developments, ranging from fundamental achievement in geophysical methods to the most interesting case studies. Traditionally, the proceedings “Engineering Environmental Geophysics and Intelligent Detection Technology” of the 10th International Conference on Environment and Engineering geophysics is published for the readers from the near-surface geophysics communityShallow surface geophysics refers to the exploration theory and application research on the surface of the earth using physical principles and methods. The shallow surface supports the needs of human survival and development. On the one hand, human beings obtain water and minerals from it, and build the necessary underground space to contain water, electricity, gas, communication, transportation and other pipe network systems in modern cities. On the other hand, various kinds of waste generated by human activities is discharged and buried in it, forming a unique geological layer of the Anthropocene. Whether from the technical level (physics) or non-technical level (politics, society, law), shallow surface geophysics is becoming more and more important. Artificial intelligence technology has been widely used in various fields in recent years, and the construction of smart cities cannot be separated from the support of shallow surface geophysical exploration and monitoring methods and technologies. Due to the integration of urbanization and the development of geophysical technology in China, geophysicists have more opportunities for scientific research. In order to promote exchanges, improve the level of environmental and engineering geophysical exploration, and provide a first-class platform for extensive exchanges among workers engaged in scientific research, technology development and production applications in this field, the 10th International Conference on Environment and Engineering Geophysics will be held in China University of Geosciences (Beijing), a famous university of geosciences. We warmly welcome experts and scholars to contribute and participate in the conferenceIn the proceedings of 10th ICEEG, 160 peer-reviewed research expended abstracts are published according to the following topics: geophysical exploration of urban underground space, high frequency surface wave theory and application, ground penetrating radar technology and application, advances in shallow surface geophysics, engineering geophysics, hydrology and environmental geophysics, disaster geophysical survey, archaeological geophysics, unmanned aerial vehicle detection, smart city geophysics, intelligent detection technology, geophysical monitoring technique, geophysical instruments and software, shallow active source and passive source seismic detection, and young scientists forum.We are deeply grateful to the members of the scientific committee and institutional scientific partners of ICEEG: Chinese Geophysical Society, China University of Geosciences (Beijing), Shallow Surface Geophysical Committee of Chinese Geophysical Society, Professional Committee of Environmental Geophysics, Chinese Geophysical Society, Department of Earth Sciences, National Natural Science Foundation of China, China University of Geosciences (Wuhan), Central South University, Chengdu University of Technology, Chang’ An University, Institute of Geology and Geophysics, Chinese Academy of Sciences, China University of Mining and Technology (Beijing), Zhejiang University and Jilin UniversityWe would like to thank all reviewers for their great efforts to achieve the high quality of published articles.We would also like to extend our gratitude to all participants of 10th ICEEG for their interests and great contributions. Our special thanks go to the invited speakers for their significant contributions to the conference and the proceedings.We would also like to thank all the sponsors. It is your years’ support that makes the ICEEG conference a success.We would also extend our thanks to all committee members and student volunteers for their great efforts in organizing this wonderful event.We hope the proceedings show the challenges and the latest developments in the application of Engineering Environmental Geophysics and Intelligent Detection Technology.

Model and experimental verification of SOP transient in OPGW based on direct strike lightning.

We introduce inductive lightning and direct lightning that affect the state of polarization (SOP) of signal light in optical ground wire (OPGW) of power transmission line, deduce the helical component of direct lightning on OPGW, and establish the transient model of signal SOP in OPGW based on direct lightning. We also monitored actual optical transport network (OTN) systems deployed on OPGW in thunderstorm-prone areas for three months, recorded error codes and SOP transients of more than 1.5 Mrad/s using a bit error rate tester and a polarimeter accordingly. The highest SOP transient rate was up to 43 Mrad/s. Finally, we verify the accuracy of the model through simulation and experiment comparison.

Seismic fragility and resilience improvement of conventional bridges supported by double-column piers utilizing shear links

A bridge structure is one of the most vulnerable parts of the transportation network system subjected to earthquakes. It is paramount to the seismic capacity improvement and the rapid recovery function of bridges during earthquakes. To address these challenges, shear links (SLs) are designed between the columns supporting the continuous girder bridges based on the structural fuse concept. The impacts of SLs on the life-cycle performance and seismic resilience of continuous girder bridges were studied by comparing the continuous girder bridges supported by double-column piers with and without SLs. The incremental dynamic analyses were performed to evaluate the seismic fragility of continuous girder bridges supported by double-column piers with and without SLs under the far- and near-field seismic waves. The economic losses were assessed to compare the financial superiority of continuous girder bridges supported by double-column piers with SLs in the life cycle. A resilience assessment methodology was employed to evaluate the post-earthquake resilience of continuous girder bridges supported by double-column piers with and without SLs. The results showed that the SLs preferentially dissipated a certain amount of earthquake energy so that the continuous girder bridge supported by new-type double-column piers with SLs exhibited lower seismic fragility and life-cycle losses compared to the continuous girder bridge supported by traditional double-column piers. Also, the proposed continuous girder bridge supported by new-type double-column piers with SLs behaved with higher post-earthquake resilience under the far- and near-field seismic waves.

IMPACT OF THE JAKARTA - SURABAYA HIGH - SPEED TRAIN ON PASSENGERS OF THE JAKARTA - SURABAYA EXECUTIVE TRAIN CORRIDOR

Due to the increasing demand for travel by train in recent years, the large potential number of passengers in Jakarta - Surabaya corridor needs to be anticipated with adequate transportation system planning so that the bottlenecks on available transportation network system can be minimized. This paper analyses the potential competition between the demand of executive passenger train and Jakarta-Surabaya high-speed train which will be built by the Government as planned. This study only use travel time variables and ticket rates as independent variables between executive passenger train and high-speed train, then stated preference methods and binomial logit models are used as tools for processing data. As a result, we believe that the operation of Jakarta-Surabaya high-speed train will have a negative impact on the demand of executive passenger train on this route.

Research on Optimization of Medical Waste Emergency Disposal Transportation Network for Public Health Emergencies in the Context of Intelligent Transportation

In order to build a more comprehensive emergency disposal and transportation network system for medical waste, it is necessary to consider various uncertain factors and data characteristics. Therefore, in the context of intelligent transportation, this article considers the uncertainty of the quantity and regional population density of infectious medical waste generation as well as the emergency disposal of infectious medical waste under multi-cycle and multi-objective conditions, and it constructs a multi-cycle emergency disposal logistics network optimization model for infectious medical waste under uncertain conditions. Through deterministic transformation of the model and data mining of the medical waste disposal logistics network in Wuhan, China, the multi-objective model under uncertain conditions was also solved and sensitivity analyzed using the MOPSO-NSGA2 intelligent algorithm, verifying the effectiveness and superiority of the algorithm.

Quantitative analysis of the importance and correlation of urban bridges and roads in the study of road network vulnerability

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.

A comprehensive review of incremental launching method in the construction of prestressed reinforced concrete bridges in Vietnam

This paper discusses the implementation of the incremental launching method in the construction of prestressed reinforced concrete bridges in Vietnam. Since the 1990s, technology transfer has been initiated to develop and rapidly expand the country’s road and rail transport network system to support industrialization and modernization. Although the method was successfully applied in several bridge projects, the high construction cost has led to a controversial issue, and the government stopped its application in the country. The paper aims to analyze the limitations and unreasonableness in the project formulation, design survey, and procurement of technological equipment that led to the policy of stopping the application of the incremental launching method. The author provides an in-depth analysis to clarify the suitability of the policy and shed light on the issue’s root causes.

A two-phase model for sustainable location of dry ports: a case of Ningbo-Zhoushan Port in China

ABSTRACT This paper proposes a two-stage model for determining the sustainable location of dry ports. In the first stage, a Multi-Criteria Decision Making (MCDM) model containing nine criteria is developed. The weight of criteria is determined by the stepwise weight assessment ratio analysis (SWARA) method, and then the ranking of alternative cities is determined by the weighted aggregated sum product assessment (WASPAS) method. In the second stage, a mixed-integer linear programming location model with multiple capacity levels is proposed to determine the final optimal cities for the dry ports by minimizing the relevant economic costs, environmental costs and social responsibility costs. A case study of Ningbo-Zhoushan Port is performed to verify the effectiveness of the proposed model. The results show that: (1) the total cost of the optimized inland transportation network system is reduced by 49.661% compared with that before the optimization, with Suzhou, Chongqing, Chengdu, Wuhan, Changsha, Wuxi and Hefei identified as the optimal locations for the dry ports; and (2) shippers close to seaports tend to choose road transportation, while shippers far away from seaports tend to choose rail transportation through dry ports.

Surrogate-based optimization approach for capacitated hub location problem with uncertainty

CJ Logistics has started to consider opening single new hub facility to expand the current transportation network system. This naturally leads to formulating a research question “where should the new hub facility be located in South Korea to minimize total transportation cost of the network system operated by the company?”. This research aims to answer the question by proposing a surrogate-based optimization approach. In addition to finding an optimal location of the new hub facility, this research performs sensitivity analysis to study the correlation between hub capacity (i.e., the source of uncertainty) and transportation cost. The results indicate that (1) total transportation cost after the establishment of the new hub facility at the optimal location is reduced by approximately 14% compared to the current transportation network system and (2) the currently operated hub facility located in Daejeon has the greatest influence on total transportation cost; while the existing hub facilities located in Cheongwon, Yongin, and Gunpo have little impact on total transportation cost after the construction of the new hub facility. It is expected that the outcome of this research helps the company systematically manage the transportation network system when the new hub facility is constructed.

Research on Security Defense of Coupled Transportation and Cyber-Physical Power System Based on the Static Bayesian Game

The driving and charging behavior of an increasing number of electric vehicles (EVs) have strengthened the connection between transportation network (TN) and cyber-physical power system (CPPS). Cyber-attacks imposed on the coupled system will cause a big disturbance to the power network (PN), which will further affect the travel behavior of EVs in the TN. To improve the ability of the coupled system to resist attacks, this paper presents the framework of coupled transportation and cyber-physical power system with a defense mechanism. From a defense perspective, considering comprehensive load shedding loss of load buses, an active defense model driven by static Bayesian game theory is built at the information network (IN) level of CPPS, which provides a defense strategy selection method against attacks at a certain moment. Moreover, a charging guidance model for EVs based on dynamic vehicles travel simulation is developed to describe the impact of charging station (CS) outage induced by the unsuccessful defense, and to mitigate disturbance on the TN. Simulation experiments with a modified Sioux Falls traffic network and IEEE 30-bus power grid coupled system verify the effectiveness of the proposed method and model.

PROYEKSI POLA PERGERAKAN PADA SIMPANG BERSINYAL (MAKASSAR - SELAWESI SELATAN)

MAT (Origin Destination Matrix) is a two-dimensional matrix that contains information about the magnitude of movement between locations (zones) within a specific area. If a MAT is charged to a transportation network system, it will produce a movement flow that describes the movement pattern in the area. This research is quantitative descriptive research. The purpose of this research is to project the future traffic movement pattern. Four methods have been developed to date that generally tries to overcome the shortcomings of the previous method, namely the Analog method (average, Detroit, Fratar, and Furness). These four methods guarantee that the magnitude of the pull generation in the future is the same as expected. Data collection techniques in research are in the form of direct data collection in the field using video cameras placed at several observation points. Hourly flow patterns calculate traffic volume. Based on the results of the analysis, it was found that there were differences in repetition in each analog method. The average method reached the 75th repetition, the Detroit method reached the 8th repetition, the Fratar method reached the 41st repetition, and the Furness method reached the third repetition.

Resilience Assessment of Multimodal Urban Transport Networks

With the development of urbanization and the evolution of urban network systems, multimodal urban transport network (MUTN) systems play a vital role in improving network effects and operational efficiency. However, urban transport networks are easily affected by natural disasters and traffic incidents, which can lead to significant human and economic losses. Accordingly, it is vital to be able to assess the resilience of transport networks in the face of various disruptions. This study, therefore, utilizes complex network theory to analyze the resilience of multimodal urban transport networks, with the resilience accessed based on topological indices. The MUTN in Beijing is selected as a case study for simulation analysis. Based on the road network and subway network, a model MUTN is established, and the Monte Carlo method is used to simulate random attacks. The results show that the MUTN in Beijing has good resilience against disruptions. This study guides the evaluation of the overall resilience of multimodal urban transport networks and will be useful for transportation planners and decision-makers in dealing with emergencies and natural disasters in the future.

Strong domination integrity in graphs and fuzzy graphs

Let H = (V, E) be a graph and xy ∈ E (H). Then x strongly dominates y if deg(x) ⩾ deg(y). A subset S of V is said to be a strong dominating set if every node y ∈ V – S is strongly dominated by some node x in H and is denoted by sd-set. The strong domination number γs (H) is the minimum cardinality of a strong dominating set. In this paper, we introduce a new vulnerability parameter called strong domination integrity in graphs. Strong domination integrity of some families of graphs are determined and its bounds are also obtained. The proposed parameter is applied in water distribution network system to identify the influential group of nodes within the network. Fuzzy graphs can be used to model uncertain networks. By using membership values of strong arcs, strong domination integrity is extended to fuzzy graphs as a new vulnerability parameter. In this study, we investigate the strong domination integrity for complete bipartite fuzzy graphs, complete fuzzy graphs and bounds are also derived. Some basic results and theorems are obtained. This vulnerability parameter is also applied in the transportation network systems.

Optimization of Joint Decision of Transport Mode and Path in Multi-Mode Freight Transportation Network.

This paper mainly studies the joint decision of transportation mode and path in the multi-mode transportation network to provide the optimal plan for freights. This paper constructs a multi-mode transportation network system by setting virtual connections between networks with different transportation modes. The Dijkstra and multi-objective optimization algorithms are used to select the path in the network. After determining the optimal path, the paths’ time, cost, and risk functions are established. The multi-objective function is converted into a single objective function by setting constraint conditions through the analytic hierarchy process. Then, the function is optimized by using the gradient descent method. Finally, the transportation plan for the case of chemical freights is formulated by using the above algorithms. The results show that the proposed algorithm can successfully find the solution for the joint decision of transportation mode and path in the complex network. After a quantitative analysis of the planned effect, the optimization actions of changing the initial transportation time and adjusting the upper limit of resources are proposed. The study findings provide a theoretical basis for improving the efficiency of the comprehensive transportation network.

MERITOCENTRIC MODEL OF SPATIAL DEVELOPMENT OF UKRAINE

The meritocentric model and changes in the methodological tools of the spatial development of the state are substantiated taking into account the in-depth analysis of the latest conditions, processes, and phenomena at different levels: philosophical, socio-mental, spiritual, humanitarian policy, economic activity, meeting the value needs of people, natural resources, administrative and legal processes and conditions of development, resettlement and spatial planning, and institutional and innovation processes. Without rejecting the analysis of official statistical information and traditional indicators and characteristics, attention is paid to the factors and characteristics that today increase the influence in the justification of decisions. The proposed meritocentric approach includes the analysis of the functional component but shifts the emphasis to research and evaluation of processes in the state, qualitative characteristics of its space, spatial transformations in Ukraine, bringing to the forefront knowledge, values, human potential, creativity, technology, and information. Using the meritocentric model, the spatial situation, challenges, and threats that arise are assessed, as well as the ways of spatial organization and development of Ukraine are identified. The integral properties of space are substantiated: functionality, ergodicity, uniqueness, dynamism, cyclicity of processes, synergy, and uneven development. The criteria for assessing the spatial situation were established - comfort, efficiency, environmental friendliness, safety. The main conditions and factors of development regimes of separate territories are determined: environmental, economic, social, administrative, etc. The major development regulators - functions, processes, values, norms – are outlined. The spatial development of Ukraine is formed on a hierarchically balanced network of growth poles, which is able to stimulate and support the socio-economic development of territories of all levels, increase the number of dynamic elements, and improve their quality characteristics. This applies primarily to the acquisition by the development poles of interregional and metropolitan features, as well as functions important for social development that ensure interaction with the global system, and strengthening the factor of innovation in the spatial development of the state. Substantiated conceptual provisions of the spatial development of Ukraine allowed offering the specific practical proposals: reservation of territories for urban development needs, development of transport network and transport systems, development of engineering infrastructure and life support facilities, tasks of placing new objects in the complex spatial structure of the state, preservation of the natural complex, etc.

The morphological structure and influence factors analysis of China's domestic civil aviation freight transport network

Civil aviation freight transport (CAFT) in China plays an important role in social and economic development. However, research on the morphological structure of China's CAFT network and its influence factors remains rare. In this paper, we focus on this topic by using a new data set of China's domestic routes from 2015 to 2019. With the complex network theory, we make an empirical study on the morphological structure of China's domestic CAFT network, and try to explore the nexus between the attributes of the network and the influence factors. The results show that China's domestic CAFT network is in line with the small world network model, which has a low average path length and a high clustering coefficient. The centrality of the network presents a saddle distribution with dense in the east and west, while sparse in the central. The results also indicate that there are many localized networks dominated by a few core airports. A number of regional hub cities exist, which are mainly located in the west of China. The development of China's CAFT highly depends on the civil aviation passenger transport (CAPT) network, and is highly affected by GDP, the industrial structure and the geographical location of cities. Finally, we give several policy suggestions, including developing the freight dedicated airports, establishing independent freight transport network system, vigorously developing core and intermediate hub cities, as well as constructing the regional network.