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We study random walks on groups with the feature that, roughly speaking, successive positions of the walk tend to be "aligned". We formalize and quantify this property by means of the notion of deviation inequalities. We show that deviation…

Probability · Mathematics 2020-12-16 Pierre Mathieu , Alessandro Sisto

Three-dimensional clinical gait analysis is essential for selecting optimal treatment interventions for patients with cerebral palsy (CP), but generates a large amount of time series data. For the automated analysis of these data, machine…

Human-Computer Interaction · Computer Science 2022-12-20 Alexander Rind , Djordje Slijepčević , Matthias Zeppelzauer , Fabian Unglaube , Andreas Kranzl , Brian Horsak

Spontaneous fluctuations of the BOLD (Blood Oxygen Level-Dependent) signal, measured with fMRI (functional Magnetic Resonance Imaging), display a rich and neurobiologically relevant functional connectivity structure. This structure is…

Neurons and Cognition · Quantitative Biology 2012-09-24 Enzo Tagliazucchi , Frederic von Wegner , Astrid Morzelewski , Verena Brodbeck , Helmut Laufs

We construct a minimal two-chain random walk model and study the information that fluctuations of the flux and higher cumulants can reveal about the model: its structure, parameters, and whether it operates under nonequilibrium conditions.…

Statistical Mechanics · Physics 2024-07-08 Joanna Li , Matthew Gerry , Israel Klich , Dvira Segal

Gait recognition is a term commonly referred to as an identification problem within the Computer Science field. There are a variety of methods and models capable of identifying an individual based on their pattern of ambulatory locomotion.…

Machine Learning · Computer Science 2021-01-01 Ryan C. Saxe , Samantha Kappagoda , David K. A. Mordecai

We consider the problem of predicting an individual's identity from accelerometry data collected during walking. In a previous paper we introduced an approach that transforms the accelerometry time series into an image by constructing its…

Applications · Statistics 2024-10-16 Lily Koffman , Ciprian Crainiceanu , Andrew Leroux

Estimating a person's age from their gait has important applications in healthcare, security and human-computer interaction. In this work, we review fifty-nine studies involving over seventy-five thousand subjects recorded with video,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Varun Velankar

The biomechanics of the human body gives subjects a high degree of freedom in how they can execute movement. Nevertheless, subjects exhibit regularity in their movement patterns. One way to account for this regularity is to suppose that…

Quantitative Methods · Quantitative Biology 2018-12-11 Stuart Hagler

Virtual models of human gait, or digital twins, offer a promising solution for studying mobility without the need for labor-intensive data collection. However, challenges such as the sim-to-real gap and limited adaptability to diverse…

Robotics · Computer Science 2024-12-06 Yi-Hung Chiu , Ung Hee Lee , Changseob Song , Manaen Hu , Inseung Kang

While user's perception & performance are predominantly examined independently in virtual reality, the Action-Specific Perception (ASP) theory postulates that the performance of an individual on a task modulates this individual's spatial &…

Human-Computer Interaction · Computer Science 2022-09-07 Panagiotis Kourtesis , Sebastian Vizcay , Maud Marchal , Claudio Pacchierotti , Ferran Argelaguet

Recognizing and identifying human locomotion is a critical step to ensuring fluent control of wearable robots, such as transtibial prostheses. In particular, classifying the intended locomotion mode and estimating the gait phase are key. In…

Robotics · Computer Science 2024-11-14 Ryan Posh , Shenggao Li , Patrick Wensing

We describe theoretically the acoustoconductance (AC) of quantum contacts. One characteristic of a contact which distinguishes it from a long, uniform wire is a strong, energy-dependent transmission probability. This has several…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 M. P. Blencowe , A. Y. Shik

Given pedestrians' vulnerability in road traffic, it remains unclear how novel AV appearances will impact pedestrians crossing behaviour. To address this gap, this study pioneers an investigation into the influence of AVs' exterior design,…

Human-Computer Interaction · Computer Science 2024-07-10 Wei Lyu , Yaqin Cao , Yi Ding , Jingyu Li , Kai Tian , Hui Zhang

Pedestrian dynamics models have provided valuable insights into pedestrian interactions, collision avoidance, and self-organized crowd behavior using mathematical, computational, AI-based, and heuristic approaches. However, existing models…

Physics and Society · Physics 2025-04-03 Kanika Jain , Anurag Tripathi , Shankar Prawesh , Indranil Saha Dalal

Time dependent STM has been used to evaluate step fluctuations as a function of temperature (300-450 K) on Ag(111) films grown on mica. The temporal correlation function scales as a power law in time, t^1/n with measured values of 1/n…

Statistical Mechanics · Physics 2009-11-10 O. Bondarchuk , D. B. Dougherty , M. Degawa , E. D. Williams , M. Constantin , C. Dasgupta , S. DasSarma

Video-based Clinical Gait Analysis often suffers from poor generalization as models overfit environmental biases instead of capturing pathological motion. To address this, we propose BioGait-VLM, a tri-modal Vision-Language-Biomechanics…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Erdong Chen , Yuyang Ji , Jacob K. Greenberg , Benjamin Steel , Faraz Arkam , Abigail Lewis , Pranay Singh , Feng Liu

We study general aspects of active motion with fluctuations in the speed and the direction of motion in two dimensions. We consider the case in which fluctuations in the speed are not correlated to fluctuations in the direction of motion,…

Biological Physics · Physics 2009-11-13 Fernando Peruani , Luis G. Morelli

Circadian rhythm is the natural biological cycle manifested in human daily routines. A regular and stable rhythm is found to be correlated with good physical and mental health. With the wide adoption of mobile and wearable technology, many…

Human-Computer Interaction · Computer Science 2021-07-12 Congyu Wu , Megan McMahon , Hagen Fritz , David M. Schnyer

Assessing the progression of muscle fatigue for daily exercises provides vital indicators for precise rehabilitation, personalized training dose, especially under the context of Metaverse. Assessing fatigue of multi-muscle…

Human-Computer Interaction · Computer Science 2024-12-03 Chunzhi Yi , Xiaolei Sun , Chunyu Zhang , Wei Jin , Jianfei Zhu , Haiqi Zhu , Baichun Wei

This research delves into the utilization of smartwatch sensor data and heart rate monitoring to discern individual emotions based on body movement and heart rate. Emotions play a pivotal role in human life, influencing mental well-being,…

Human-Computer Interaction · Computer Science 2024-08-14 Zikri Kholifah Nur , Rifki Wijaya , Gia Septiana Wulandari
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