Results 91 to 100 of about 8,174 (251)

Crisis Preparation, Capacity Building, and Community Resilience: Lessons From Maui

Nonprofit Management and Leadership, EarlyView.
ABSTRACT The 2023 Maui wildfires provide a unique context to explore the impact of nonprofit crisis networks taking a proactive role in community crisis response, leveraging resources, expertise, and networks. The Hawaiʻi Community Foundation (HCF) has been a key player in Maui's local response, providing critical support, mobilizing volunteers, and ...
Lauren Azevedo, Kaila Witkowski, Ratna Dougherty, Christa Remington   +3 more
wiley   +1 more source

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

Deep learning‐based ecological analysis of camera trap images is impacted by training data quality and quantity

Remote Sensing in Ecology and Conservation, EarlyView.
Machine learning image classifiers are increasingly being used to automate camera trap image labelling, but we don't know how much ML model accuracy matters for downstream ecological analyses. Using two large data sets from an African savannah and an Asian dry forest ecosystem, we compared human labelled data with predictions from deep‐learning models ...
Peggy A. Bevan, Omiros Pantazis, Holly A.I. Pringle, Guilherme Braga Ferreira, Daniel J. Ingram, Emily K. Madsen, Liam Thomas, Dol Raj Thanet, Thakur Silwal, Santosh Rayamajhi, Gabriel J. Brostow, Oisin Mac Aodha, Kate E. Jones   +12 more
wiley   +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

Study on evacuation simulation under crowd-diversion condition

Advances in Mechanical Engineering, 2018
With the increasing number of domestic buildings, the importance of safety evacuation in case of fire in the buildings has been aware. Occupants in a building will crowd at exit(s) when they evacuate in disasters.
Yung-Piao Chiu, Yan-Chyuan Shiau, Yi-Hsuan Lai   +2 more
doaj   +1 more source

Modeling Group Structures With Emotion in Crowd Evacuation

IEEE Access, 2019
Simulation on crowd evacuation has attracted plenty of attention in the past few years. Emotion plays a significant role in human decision making processes and on the behaviors during the evacuation.
Yan Mao, Xinmiao Fan, Zixuan Fan, Wu He
doaj   +1 more source

Education in a Changing Climate: A Systematic Review for Low and Middle‐Income Countries (LMICs)

Sustainable Development, EarlyView.
ABSTRACT Climate change is a major global challenge that affects many aspects of human life and hinders progress on the United Nations (UN) Sustainable Development Goals (SDGs). One area that has not received enough attention is its impact on children's education in low‐ and middle‐income countries (LMICs), which are especially vulnerable to ...
Afshan Ameer, Rami Ghannam
wiley   +1 more source

Strategies in crowd and crowd structure

, 2012
In an emergency situation, imitation of strategies of neighbours can lead to an order-disorder phase transition, where spatial clusters of pedestrians adopt the same strategy.
Gawronski, P., Kantelhardt, J., Krawczyk, M. J., Kulakowski, K., Kupczak, A., Malarz, K., Malinowski, J., Sikora, W., Was, J.   +8 more
core   +1 more source

Practical Methodology for Developing Visions for Carbon‐Neutral Cities and Communities

Sustainable Development, EarlyView.
ABSTRACT Cities and communities play important roles in sustainable development and climate change mitigation. This study presents a novel framework for developing carbon‐neutral visions for cities and communities. We established five “principles,” investigated options encompassing four parameters (management, goal setting, actions, and quantification),
Kei Gomi, Makoto Ooba, Shogo Nakamura, Kohei Sakai, Satoshi Nagatomi   +4 more
wiley   +1 more source

The Effect of Integrating Travel Time

, 2012
This contribution demonstrates the potential gain for the quality of results in a simulation of pedestrians when estimated remaining travel time is considered as a determining factor for the movement of simulated pedestrians. This is done twice: once for
A. Johansson, A. Schadschneider, B. Steffen, M. Chraibi, M. Moussaïd, M. Sherif, T. Kretz, T. Kretz, T. Kretz, T. Kretz, T. Kretz, T. Kretz, T. Kretz, T. Lakoba, W. Yu, W.K. Jeong, W.K. Jeong   +16 more
core   +1 more source