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Attraction vs. Alignment as Drivers of Collective Motion

Daniel Strömbom, Grace Tulevech
2022 Frontiers in Applied Mathematics and Statistics  
These findings further challenge the current alignment based theory of collective motion and may contribute to a more versatile theory of collective motion across scales.  ...  The standard explanation for how these groups form and function is that the individual animals interact via attraction, repulsion, and alignment, where alignment is proposed to drive the collective motion  ...  However, motivated by both experimental and theoretical findings over the past decade the role of explicit alignment as the driver of collective motion has come into question.  ... 
doi:10.3389/fams.2021.717523 fatcat:eh4fzpvpivfnddwadnvwl37hha

A Driving Behaviour Model of Electrical Wheelchair Users

S. O. Onyango, Y. Hamam, K. Djouani, B. Daachi, N. Steyn
2016 Computational Intelligence and Neuroscience  
In spite of the presence of powered wheelchairs, some of the users still experience steering challenges and manoeuvring difficulties that limit their capacity of navigating effectively.  ...  The method has facilitated the formulation of a simple behaviour model that is also linear in parameters.  ...  Acknowledgments The authors of this paper gratefully appreciate the contribution of South African National Research Fund (NRF), Tshwane University of Technology (TUT), and the French South African Institute  ... 
doi:10.1155/2016/7189267 pmid:27148362 pmcid:PMC4842362 fatcat:kbjfkfer55dtfiivqqesymp5yq

Turn-Intent Analysis Using Body Pose for Intelligent Driver Assistance

Shinko Yuanhsien Cheng, M.M. Trivedi
2006 IEEE pervasive computing  
A grant from the University of California Discovery's Digital Media Innovation Program and the Electronics Research Laboratory of Volkswagen of America made this research possible.  ...  ACKNOWLEDGMENTS We thank Joel McCall for his invaluable advice and assistance with sparse Bayesian learning and technical aspects of the data capture equipment.  ...  Positive samples of y m for training the classifier are extracted from motion data where m is aligned with the decision time.  ... 
doi:10.1109/mprv.2006.88 fatcat:d7zh4fvio5d3lebk7l73ookqyi

Interlocking mechanism between molecular gears attached to surfaces [article]

Rundong Zhao, Yan-Ling Zhao, Fei Qi, Klaus Hermann, Rui-Qin Zhang and Michel A. Van Hove
2018 arXiv   pre-print
We explore in detail the transmission of slow rotational motion from one gear to the next by these relatively simple molecules, so as to isolate and reveal the mechanisms of the relevant intermolecular  ...  Employing ab initio calculations, we investigate model systems consisting of molecules adsorbed on metal or graphene surfaces, ranging from very simple triple-arm gears such as PF3 and NH3 to larger multi-arm  ...  We also acknowledge the computing resources of the Tianhe2-JK cluster at the Beijing Computational Science Research Center and of the Tianhe2 cluster at the National Supercomputer Center in Guangzhou,  ... 
arXiv:1802.01802v1 fatcat:hn23pdiq5fh6bh6i37wwtpbyx4

Head and gaze dynamics in visual attention and context learning

Anup Doshi, Mohan M. Trivedi
2009 2009 IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops  
Assistive living, advanced driver assistance systems, and intelligent command-and-control centers are just a few of these cases where human interactions play a critical role in situation analysis.  ...  In particular, the behavior or body language of the human subject may be a strong indicator of the context of the situation.  ...  This result is well-aligned with more recent results indicating the limitations of drivers' multitasking abilities [18] .  ... 
doi:10.1109/cvprw.2009.5204215 dblp:conf/cvpr/DoshiT09 fatcat:p35tqmtdqrblvlodvm42dea2de

Head and gaze dynamics in visual attention and context learning

A. Doshi, M.M. Trivedi
2009 2009 IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops  
Assistive living, advanced driver assistance systems, and intelligent command-and-control centers are just a few of these cases where human interactions play a critical role in situation analysis.  ...  In particular, the behavior or body language of the human subject may be a strong indicator of the context of the situation.  ...  This result is well-aligned with more recent results indicating the limitations of drivers' multitasking abilities [18] .  ... 
doi:10.1109/cvpr.2009.5204215 fatcat:erw6p4sjajfnnhg4ekzwkyj2te

Head and eye gaze dynamics during visual attention shifts in complex environments

A. Doshi, M. M. Trivedi
2012 Journal of Vision  
These results demonstrate that measurements of eye-head dynamics are useful data for detecting driver distractions, as well as in classifying human attentive states in time and safety critical tasks.  ...  In laboratory vehicle simulator experiments, a unique and significant (p G 0.05) pattern of preparatory head motions, prior to the gaze saccade, emerges in the top-down case.  ...  The authors also wish to thank their colleagues from the CVRR Laboratory for their assistance, especially during experimental data collection.  ... 
doi:10.1167/12.2.9 pmid:22323822 fatcat:ksfw5f4n3zhzbdld4bbftx422u

Experimental Analysis of a Novel, Magnetic-Driven Tactile Feedback Device

Fahad Alshaibani, Mark S Thompson, Jeroen HM Bergmann
2020 Prosthesis  
The device utilizes magnets to deliver a sensation that is not dependent on controlling specific frequency bands to stimulate the mechanoreceptors, as is the case with vibro-tactile methods.  ...  The study presented in this paper details the development and experimental testing of a novel, magnetic, tactile feedback device that is able to deliver a stimulus to a patch of skin on the lower arm of  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/prosthesis2010003 fatcat:cvnfw6mbg5bhhlobuvlkc4gxlu

Modulated-alignment dual-axis (MAD) confocal microscopy for deep optical sectioning in tissues

Steven Y. Leigh, Ye Chen, Jonathan T.C. Liu
2014 Biomedical Optics Express  
Simulations indicate that modulating the spatial alignment of dual-axis beams at a frequency f generates signals from the focal volume of the microscope that are modulated at 2f with minimal modulation  ...  The DAC architecture is unique in that it utilizes an intersecting pair of illumination and collection beams to improve the spatial-filtering and optical-sectioning performance of confocal microscopy while  ...  R01DE023497 (Liu), the National Cancer Institute R01CA175391 (Liu) and the Office of the Vice President for Research at Stony Brook University.  ... 
doi:10.1364/boe.5.001709 pmid:24940534 pmcid:PMC4052905 fatcat:pocowsph2fei7p2uwpwutlhafy

Collective dynamics of dense disordered polar active matter [article]

Matteo Paoluzzi, Demian Levis, Ignacio Pagonabarraga
2022 arXiv   pre-print
Besides causing collective motion, the alignment interaction drives the fluidification of the active glass and the dynamical slowing down of the polar phase.  ...  Considering only leading interactions, as excluded volume effects and a minimal alignment rule, we show that polar order displays the typical features of second-order phase transitions in a two-dimensional  ...  the role of density to promote collective motion.  ... 
arXiv:2205.15643v1 fatcat:3y62p3vtdveiplw2zn77f34n4e

Cooperative Collision Warning Systems: Concept Definition and Experimental Implementation

Raja Sengupta, Shahram Rezaei, Steven E. Shladover, Delphine Cody, Susan Dickey, Hariharan Krishnan
2007 Journal of Intelligent Transportation Systems / Taylor & Francis  
The contents of this report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein.  ...  The contents do not necessarily reflect the official views or policies of the State of California. This report does not constitute a standard, specification, or regulation.  ...  The views expressed here are those of the authors and not necessarily of the research sponsors.  ... 
doi:10.1080/15472450701410452 fatcat:lby7krn2szckfk2spksd7lhoga

Enhancing Undergraduate Research Experience with Cutting Edge Technologies

Wenbing Zhao
2017 International Journal of Information and Education Technology  
The main theme of these projects is the utilization of cutting edge technologies to solve real-world problems, including Microsoft Kinect, Leap Motion Sensor, iOS devices (iPhone/iPad/iPod touch), Android  ...  In this article, we share our experiences in designing and supervising projects for undergraduate research at CSU as a principal investigator, and the lessons learned in creating projects that are appropriate  ...  ACKNOWLEDGMENT We thank the anonymous reviewers for their invaluable comments on an earlier version of this paper.  ... 
doi:10.18178/ijiet.2017.7.7.918 fatcat:i4bbhb2jkvavtlxuzsbr5kdnlm

The Impact of Traffic Environmental Vision Pressure on Driver Behaviour

Yi Li, Yuren Chen, Fan Wang
2018 Journal of Advanced Transportation  
Drivers' psychological data and vehicle data were collected and postprocessed.  ...  Previous models described them as physical processes with vehicle dynamics and physical criteria.  ...  Acknowledgments This work was supported by the National Science Foundation of China [Grant no. 51238008]. Journal of Advanced Transportation  ... 
doi:10.1155/2018/4941605 fatcat:dzd5fh3x6bgufdilswxwc2nnai

Active Brownian particles

P. Romanczuk, M. Bär, W. Ebeling, B. Lindner, L. Schimansky-Geier
2012 The European Physical Journal Special Topics  
We review theoretical models of individual motility as well as collective dynamics and pattern formation of active particles.  ...  Based on the description of individual motion of point-like active particles by stochastic differential equations, we discuss different velocity-dependent friction functions, the impact of various types  ...  for a variable velocity of individuals and acceleration/deceleration due to effective forces, and 2) exhibits collective motion for simple attraction/repulsion interactions without need of alignment terms  ... 
doi:10.1140/epjst/e2012-01529-y fatcat:4f5xk7x6h5butfm33cnpgl5aam

Gaze-based Intention Anticipation over Driving Manoeuvres in Semi-Autonomous Vehicles

Min Wu, Tyron Louw, Morteza Lahijanian, Wenjie Ruan, Xiaowei Huang, Natasha Merat, Marta Kwiatkowska
2019 2019 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)  
The method is evaluated on a data set of 124 experiments from 75 drivers collected in a safety-critical semi-autonomous driving scenario.  ...  of the drivers.  ...  Data for this study was collected in the high-fidelity, motion-based, University of Leeds Driving Simulator (Fig. 3) , as part of the EU-funded AdaptIVe project [30] - [32] .  ... 
doi:10.1109/iros40897.2019.8967779 dblp:conf/iros/WuLLRHMK19 fatcat:cugu4ta22fhw3f5y7dfskjckwa
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