S.C. Wong
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View article: Traffic Dynamics of Vehicles Passing Each Other on Bidirectional Undivided Narrow Roads
Traffic Dynamics of Vehicles Passing Each Other on Bidirectional Undivided Narrow Roads Open
This study investigates traffic dynamics on bidirectional undivided narrow roads. A novel heuristic-based passing (HP) model is proposed to microscopically model the complex passing maneuvers. Considering both perceived visual stimuli and …
View article: Multi-element probabilistic collocation solution for dynamic continuum pedestrian models with random inputs
Multi-element probabilistic collocation solution for dynamic continuum pedestrian models with random inputs Open
This study focuses on dynamic continuum pedestrian flow models with random inputs, which can be represented by sets of partial differential equations with some modeling parameters being randomized. Under random conditions, the model output…
View article: Advancing lane formation and high-density simulations in bidirectional flow: A humanoid pedestrian model incorporating gait dynamics and body rotation
Advancing lane formation and high-density simulations in bidirectional flow: A humanoid pedestrian model incorporating gait dynamics and body rotation Open
Current bidirectional pedestrian flow models face challenges in accurately simulating lane formation and high-density conditions. This study addresses these issues by developing an improved humanoid pedestrian model (HPM), which extends th…
View article: Self-service check-in kiosks in airport terminal planning: Static analysis on the airport check-in space
Self-service check-in kiosks in airport terminal planning: Static analysis on the airport check-in space Open
Self-service check-in kiosks are increasingly recognized as a cost-effective solution for expanding check-in capacity without the need for terminal building expansion. These kiosks serve as essential airport infrastructure, providing time …
View article: Modeling residual-vehicle effects on uncertainty estimation of the connected vehicle penetration rate
Modeling residual-vehicle effects on uncertainty estimation of the connected vehicle penetration rate Open
In the transition to full deployment of connected vehicles (CVs), the CV penetration rate plays a key role in bridging the gap between partial and complete traffic information. Several innovative methods have been proposed to estimate the …
View article: Boundedly rational departure time choice in a dynamic continuum user equilibrium model for an urban city
Boundedly rational departure time choice in a dynamic continuum user equilibrium model for an urban city Open
Based on Wardrop's first principle, the perfectly rational dynamic user equilibrium is widely used to study dynamic traffic assignment problems. However, due to imperfect travel information and a certain "inertia" in decision-making, the b…
View article: Unraveling the causes of the Seoul Halloween crowd-crush disaster
Unraveling the causes of the Seoul Halloween crowd-crush disaster Open
As the world steadily recovers from the COVID-19 pandemic, managing large gatherings becomes a critical concern for ensuring crowd safety. The crowd-crush disaster in Seoul in 2022 highlights the need for effective predictive crowd managem…
View article: Fusion of multi-resolution data for estimating speed-density relationships
Fusion of multi-resolution data for estimating speed-density relationships Open
Estimating traffic flow models, such as speed-density relationships, using data from multiple sources with different temporal resolutions is a prevalent challenge encountered in real-world scenarios. The resolution incompatibility is often…
View article: Correlation-based feature selection and parallel spatiotemporal networks for efficient passenger flow forecasting in metro systems
Correlation-based feature selection and parallel spatiotemporal networks for efficient passenger flow forecasting in metro systems Open
This paper presents a novel framework for predicting metro passenger flow that is both interpretable and computationally efficient. The proposed method first uses a correlation-based spatiotemporal feature selection strategy (Cor-STFS) to …
View article: Modelling crowd pressure and turbulence through a mixed-type continuum approach
Modelling crowd pressure and turbulence through a mixed-type continuum approach Open
Empirical studies of large gatherings and natural disasters have revealed two important features of dense crowds: extremely high crowd pressure and crowd turbulence. In this study, a mixed-type continuum model for multidirectional pedestri…
View article: Endovascular Management of Iatrogenic Neck Vascular Injury after Central Venous Catheterisation
Endovascular Management of Iatrogenic Neck Vascular Injury after Central Venous Catheterisation Open
Central venous line placement is a common procedure in both elective and emergency settings across different medical and surgical specialties.The jugular and subclavian approaches are common methods of central venous catheterisation in the…
View article: Continuum dynamic traffic models with novel local route-choice strategies for urban cities
Continuum dynamic traffic models with novel local route-choice strategies for urban cities Open
In dynamic traffic assignment problems, travelers choose routes that minimize their cost of traveling to their destination. In traditional continuum models, travelers have a global perception of traffic; in this study, two novel reactive r…
View article: Development and experimental validation of a humanoid pedestrian model that captures stepping behavior and body rotation
Development and experimental validation of a humanoid pedestrian model that captures stepping behavior and body rotation Open
This paper presents a novel humanoid pedestrian model (HPM) incorporating stepping behavior and body rotation. The HPM is composed of two main components: (a) body modeling and (b) gait planning. A pedestrian is represented as a three-dime…
View article: Positivity-Preserving Discontinuous Galerkin Methods on Triangular Meshes for Macroscopic Pedestrian Flow Models
Positivity-Preserving Discontinuous Galerkin Methods on Triangular Meshes for Macroscopic Pedestrian Flow Models Open
The macroscopic models for solving the pedestrian flow problem can be generally classified into two categories as follows: first-order continuum models and high-order continuum models. In first-order continuum models, the density satisfies…
View article: Bilevel optimization of a housing allocation and traffic emission problem in a predictive dynamic continuum transportation system
Bilevel optimization of a housing allocation and traffic emission problem in a predictive dynamic continuum transportation system Open
In recent decades, the effects of vehicle emissions on urban environments have raised increasing concerns, and it has been recognized that vehicle emissions affect peoples’ choice of housing location. Additionally, housing allocation patte…
View article: An Improved System to Measure Leaf Gas Exchange on Adaxial and Abaxial Surfaces
An Improved System to Measure Leaf Gas Exchange on Adaxial and Abaxial Surfaces Open
Measurement of leaf carbon gain and water loss (gas exchange) in planta is a standard procedure in plant science research for attempting to understand physiological traits related to water use and photosynthesis. Leaves carry out gas excha…
View article: A dynamically bi‐orthogonal solution method for a stochastic Lighthill‐Whitham‐Richards traffic flow model
A dynamically bi‐orthogonal solution method for a stochastic Lighthill‐Whitham‐Richards traffic flow model Open
Macroscopic traffic flow modeling is essential for describing and forecasting the characteristics of traffic flow. However, the classic Lighthill–Whitham–Richards (LWR) model only provides equilibrium values for steady‐state conditions and…
View article: Domain Adversarial Spatial-Temporal Network
Domain Adversarial Spatial-Temporal Network Open
CIKM '22: The 31st ACM International Conference on Information and Knowledge Management, Atlanta, GA, USA, October 17 - 21, 2022
View article: Crossing behaviors of drunk pedestrians unfamiliar with local traffic rules
Crossing behaviors of drunk pedestrians unfamiliar with local traffic rules Open
Statistics indicate that alcohol consumption is heavily involved in tourism, with tourists likely to consume more alcohol than usual when visiting other countries. The risk of traffic collisions is also expected to increase when tourists a…
View article: High-speed rail services for elderly passengers: Ticket-booking patterns and policy implications
High-speed rail services for elderly passengers: Ticket-booking patterns and policy implications Open
Mobility is important for the well-being of the elderly, as it enables them to maintain social connections and enjoy a good quality of life. High-speed rail (HSR) is an important transportation mode in China, and considering China's aging …
View article: A Schedule-Based Model for Passenger-Oriented Train Planning With Operating Cost and Capacity Constraints
A Schedule-Based Model for Passenger-Oriented Train Planning With Operating Cost and Capacity Constraints Open
In the planning stage, train operators design timetables to serve passenger trips and a train circulation plan to support these timetables. These designs consider not only operating costs but also passenger convenience. In this study, we d…
View article: An assessment of the effect of green signal countdown timers on drivers’ behavior and on road safety at intersections, based on driving simulator experiments and naturalistic observation studies
An assessment of the effect of green signal countdown timers on drivers’ behavior and on road safety at intersections, based on driving simulator experiments and naturalistic observation studies Open
The results suggest that GSCTs worsen safety at signalized intersections, and thus their removal should be considered.