Results 91 to 100 of about 465,004 (290)

Large-Scale Dataset for Radio Frequency-Based Device-Free Crowd Estimation

Data, 2020
Organisers of events attracting many people have the important task to ensure the safety of the crowd on their venue premises. Measuring the size of the crowd is a critical first step, but often challenging because of occlusions, noise and the dynamics ...
Abdil Kaya, Stijn Denis, Ben Bellekens, Maarten Weyn, Rafael Berkvens   +4 more
doaj   +1 more source

Enhanced Li‐Ion Battery Performance with Hybrid MXene/GnR Electrodes: Heterojunctions and Engineered Architectures Supported by DFT Mechanistic Studies for Improved Rate Performance, Stability & Capacity

Advanced Functional Materials, EarlyView.
Lithium‐ion batteries (LIBs) remain central to energy storage but suffer from slow ion transport and degradation. Here, we present a binder‐free Ti3C2Tx MXene/GnR hybrid electrode with a porous 3D architecture formed via freeze casting. The structure enhances conductivity, ion transport, and stability, delivering 401 mAh/g, ∼97% efficiency, and 92 ...
Sara Mohseni Taromsari, Meysam Salari, Dipali Nayak, Saeed Habibpour, Ling Wei Hwang, Cristopher Carreiro, Carlos M. Da Silva, Aiping Yu, Chul B. Park, Cristina H. Amon, Hani E. Naguib   +10 more
wiley   +1 more source

Photorealistic Synthetic Crowds Simulation in Indoor Environments (PSCS-I): A Novel Synthetic Dataset for Realistic Simulation of Crowd Panic and Violence Behaviors

IEEE Access
Crowd analysis is a critical research field in computer vision that focuses on understanding and predicting crowd behaviors with applications extending to public safety, urban planning, and event management. However, the scarcity of large-scale, diverse,
Stefanos Pasios, Konstantinos Gkountakos, Konstantinos Ioannidis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris   +5 more
doaj   +1 more source

Multiplex Modular Nanorobotic Systems with Catalytic Activity under Magnetic Navigation

Advanced Functional Materials, EarlyView.
We present modular nanorobots composed of a magnetic propulsion module and different extension modules carrying functional activities, assembled via DNA base pairing. The system integrates propulsion, optical tracking, enzymatic catalysis, and cell docking in a programmable manner.
Voichita Mihali, Xinan Huang, Lucie Motyckova, Nicolas Moreno Gomez, Michal Skowicki, Cora‐Ann Schoenenberger, Peer Fischer, Cornelia G. Palivan   +7 more
wiley   +1 more source

Survey of Research on Crowd Congestion Detection in Dense Scenarios [PDF]

Jisuanji gongcheng
Perceiving and detecting crowd congestion in public spaces is an extremely challenging task in computer vision. Research on this issue, such as analyzing the motion characteristics of crowds and constructing behavior detection models, can provide ...
XU Min, HU Bin
doaj   +1 more source

Estimating Heterogeneous Take-up and Crowd-Out Responses to Marginal and Non-Marginal Medicaid Expansions [PDF]

We use a linear probability model with interactions and a switching probit model (SPM) to estimate heterogeneous effects of Medicaid expansions on Medicaid take-up, private insurance coverage and crowd-out.
Ham, John C., Ozbeklik, Serkan, Shore-Sheppard, Lara   +2 more
core  

From the Micro-scale to Collective Crowd Dynamics

, 2013
This paper deals with the kinetic theory modeling of crowd dynamics with the aim of showing how the dynamics at the micro-scale is transferred to the dynamics of collective behaviors. The derivation of a new model is followed by a qualitative analysis of
Bellomo, Nicola, Bellouquid, Abdelghani, Knopoff, Damian   +2 more
core   +1 more source

The Terminal Domains of Collagen‐Like Silk Direct Molecular Interactions and Liquid–Liquid Phase Separation‐Mediated Material Assembly

Advanced Functional Materials, EarlyView.
Terminal domains of recombinant collagen‐like silk regulate hierarchical self‐assembly across molecular and material scales. We show that terminal domains of collagen‐like silk enhance triple‐helix stability and drive liquid–liquid phase separation, enabling reversible formation of fibers and self‐healing films.
Mengjie Shen, Daniil Astapov, Nur Alia Oktaviani, Mami Goto, Keiji Numata, A. Sesilja Aranko   +5 more
wiley   +1 more source

Curvature‐Tuned Friction at Electrified Ionic Liquid Interfaces

Advanced Functional Materials, EarlyView.
Graphene curvature plays a key role in friction electrotunability at single‐asperity contacts lubricated by ionic liquids. A 9 nm radius yields stronger tunability than larger radii, with distinct friction coefficients at low and high loads indicating a shift in the slippage plane.
Wei Song, Md Ashiqur Rahman, Qianlu Zheng, Nathaniel Hawthorne, James D. Batteas, Rui Qiao, Rosa M. Espinosa‐Marzal   +6 more
wiley   +1 more source

It Is Time to Modernize Disaster Preparedness With Crowd Analysis. [PDF]

J Acute Med, 2023
Chen KF.
europepmc   +1 more source