Results 81 to 90 of about 3,012,435 (228)

A second-order sliding mode controller with integral barrier Lyapunov function for crowd density regulation

Journal of Engineering and Applied Science
Effective evacuation strategies are critical for preventing stampedes in large-scale, high-density crowd management. This paper develops a second-order sliding mode controller within a distributed parameter system to regulate crowd density toward a safe ...
Wei Qin, Qianqian Wang
doaj   +1 more source

Proximal Policy Optimization for Crowd Evacuation in Complex Environments—A Metaverse Approach at Krung Thep Aphiwat Central Terminal, Thailand

IEEE Access
Efficient crowd evacuation from railway platforms is critical for passenger safety during emergencies. This study introduces a novel dynamic emergency evacuation route generator using the Proximal Policy Optimization (PPO) algorithm within a custom-built
Sushank Chaudhary, Nitinun Sinpan, Pruk Sasithong, Sunita Khichar, Panithan la-Aiddee, Natt Leelawat, Amir Parnianifard, Suvit Poomrittigul, Lunchakorn Wuttisittikulkij   +8 more
doaj   +1 more source

Agent-Based Emergency Evacuation Simulation with Individuals with Disabilities in the Population [PDF]

Catastrophic events have raised numerous issues concerning how effectively the built environment accommodates the evacuation needs of individuals with disabilities.
Yuya Sasaki, Keith Christensen
core  

Population Pharmacokinetics and Detection Times of Betamethasone After Intravenous, Intramuscular, and Intranasal Jet Administration of Betamethasone Sodium Phosphate in Horses

Drug Testing and Analysis, EarlyView.
Betamethasone concentrations in 20 horses from Japan and Germany following IV, IM, and INJ administration of betamethasone phosphate were analyzed using population pharmacokinetic modeling. For IV administration of 0.04 mg/kg q24 h, IPC and IUC were 0.012 and 0.31 ng/mL, respectively; the IUC approximated the IFHA urine ISL (0.20 ng/mL).
Taisuke Kuroda, Marc Machnik, Mario Thevis, Yohei Minamijima, Gary Ngai‐Wa Leung, Motoi Nomura, Fumiaki Mizobe, Yuhiro Ishikawa, Kazuhiro Kamiya, Pierre‐Louis Toutain   +9 more
wiley   +1 more source

Simulating Evacuations with Obstacles Using a Modified Dynamic Cellular Automata Model

Journal of Applied Mathematics, 2012
A modified dynamic cellular automata model is proposed to simulate the evacuation of occupants from a room with obstacles. The model takes into account some factors that play an important role in an evacuation process, such as human emotions and crowd ...
Lim Eng Aik, Tan Wee Choon
doaj   +1 more source

An extended car following approach using agent based model on evacuation system of micro traffic [PDF]

, 2009
We proposed an extended car-following approach on evacuation system of micro traffic. It is based on the agent model. Parameter which is owned by the agent is the velocity.
Harsono, Tri
core  

Anatomy of a SPAN Particle: A Four‐Level Structural Framework for Lithium–Sulfur Batteries

EcoEnergy, EarlyView.
Sulfurized polyacrylonitrile (SPAN) is a key cathode material for batteries. Borrowing the four‐level classification of protein structure, this perspective demonstrates SPAN's structural complexity into well‐defined levels, giving researchers clear research boundaries and targets at each level for improving battery performance.
Jinkwan Jung, Hyunseok Moon, Matthew Miyagishima, Jasper Zhang, Ying Shirley Meng, Shen Wang   +5 more
wiley   +1 more source

Resilience in a noisy urban system

Regional Science Policy &Practice, EarlyView., 2023
Abstract The ability of cities to recuperate from disturbances and return to their evolutionary pathways depends, first and foremost, on the type of damage that the shock created. But in addition, it depends on how information is transmitted in the urban system and on how noise filters distort the information that reaches economic agents.
Dani Broitman, Daniel Czamanski
wiley   +1 more source

Smart Parking Systems: A Review of Optimization Techniques and Technological Advances

Energy Science &Engineering, EarlyView.
This review highlights optimization techniques and recent technological advances in smart parking systems, emphasizing their role in enhancing efficiency, reducing congestion, and improving user experience. It provides insights into innovative approaches that shape the future of sustainable and intelligent urban mobility. ABSTRACT In heavily populated,
Amirhossein Khosravi Sarvenoee, Mohammad Kohzadipour, Majid Valizadeh, Mohammad Saeedi Kia, Milad Karimian, Mohammad Sharifirad   +5 more
wiley   +1 more source

Game Theoretic Spatial Evacuation Simulation Models To Predict Crowd Disaster [PDF]

, 2018
Crowd dynamics play an important role in evacuation management systems relevant to organizing safer large scale gatherings. Planning crowd control tasks via evacuation simulation of the movement and behaviours of crowd during egress could mitigate the ...
Ibrahim, Azhar Mohd
core   +1 more source