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Recent biological experiments have shown that certain types of cells are able to move in structured and confined environment even without the activation of focal adhesion. Focusing on this particular phenomenon and based on previous works,…

偏微分方程分析 · 数学 2022-12-05 Chiara Giverso , Gaspard Jankowiak , Luigi Preziosi , Christian Schmeiser

We investigate the mechanical interplay between the spatial organization of the actin cytoskeleton and the shape of animal cells adhering on micropillar arrays. Using a combination of analytical work, computer simulations and in vitro…

Existing methods for skeleton-based action recognition mainly focus on improving the recognition accuracy, whereas the efficiency of the model is rarely considered. Recently, there are some works trying to speed up the skeleton modeling by…

计算机视觉与模式识别 · 计算机科学 2021-03-23 Lei Shi , Yifan Zhang , Jian Cheng , Hanqing Lu

Pose detection is one of the fundamental steps for the recognition of human actions. In this paper we propose a novel trainable detector for recognizing human poses based on the analysis of the skeleton. The main idea is that a skeleton…

计算机视觉与模式识别 · 计算机科学 2017-08-03 Alessia Saggese , Nicola Strisciuglio , Mario Vento , Nicolai Petkov

Navigation of microorganisms is controlled by internal processes ultimately sensitive to mechanical or chemical signaling encountered along the path. In many natural environments, such as porous soils or physiological ducts, motile species…

"Epigenetic Tracking" is a model of systems of biological cells, able to generate arbitrary 2 or 3-dimensional cellular shapes of any kind and complexity (in terms of number of cells, number of colours, etc.) starting from a single cell. If…

适应与自组织系统 · 物理学 2011-11-18 Alessandro Fontana

In this work, we apply a kinetic version of a bounded confidence consensus model to biomedical segmentation problems. In the presented approach, time-dependent information on the microscopic state of each particle/pixel includes its space…

图像与视频处理 · 电气工程与系统科学 2024-06-17 Raffaella Fiamma Cabini , Anna Pichiecchio , Alessandro Lascialfari , Silvia Figini , Mattia Zanella

Skeleton-based human action recognition has attracted a lot of research attention during the past few years. Recent works attempted to utilize recurrent neural networks to model the temporal dependencies between the 3D positional…

计算机视觉与模式识别 · 计算机科学 2017-06-27 Jun Liu , Amir Shahroudy , Dong Xu , Alex C. Kot , Gang Wang

Soil is a complex, dynamic material, with physical properties that depend on its biological content. We propose a cellular automaton model for self-organizing soil structure, where soil aggregates and serves as food for microbial species.…

生物物理 · 物理学 2025-10-10 Riz Fernando Noronha , Kim Sneppen , Kunihiko Kaneko

The last several years have seen significant progress in using depth cameras for tracking articulated objects such as human bodies, hands, and robotic manipulators. Most approaches focus on tracking skeletal parameters of a fixed shape…

计算机视觉与模式识别 · 计算机科学 2017-11-23 Aaron Walsman , Weilin Wan , Tanner Schmidt , Dieter Fox

We present a fast, high-throughput method for characterizing the motility of microorganisms in 3D based on standard imaging microscopy. Instead of tracking individual cells, we analyse the spatio-temporal fluctuations of the intensity in…

3D fluorescence microscopy of living organisms has increasingly become an essential and powerful tool in biomedical research and diagnosis. An exploding amount of imaging data has been collected, whereas efficient and effective…

图像与视频处理 · 电气工程与系统科学 2019-11-28 Yang Jiao , Mo Weng , Mei Yang

Motile bacteria can migrate along chemical gradients in a process known as chemotaxis. When exposed to uniform environmental stress, Escherichia coli cells coordinate their chemotactic responses to form millimeter-sized condensates…

生物物理 · 物理学 2025-05-02 Nir Livne , Ady Vaknin , Oded Agam

Substrate engineering for steering cell growth is a wide and well-established area of research in the field of modern biotechnology. Here we introduce a micromachining technique to pattern an inert, transparent polymer matrix blended with a…

The growing interest for comparing protein internal dynamics owes much to the realization that protein function can be accompanied or assisted by structural fluctuations and conformational changes. Analogously to the case of functional…

生物大分子 · 定量生物学 2012-12-19 C. Micheletti

This paper concerns the fully automatic direct in vivo measurement of active and passive dynamic skeletal muscle states using ultrasound imaging. Despite the long standing medical need (myopathies, neuropathies, pain, injury, ageing),…

计算机视觉与模式识别 · 计算机科学 2017-06-30 Ryan J. Cunningham , Peter J. Harding , Ian D. Loram

We present a continuum model for the mechanical behavior of the skeletal muscle tissue when its functionality is reduced due to aging. The loss of ability of activating is typical of the geriatric syndrome called sarcopenia. The material is…

组织与器官 · 定量生物学 2018-05-03 Giulia Giantesio , Alessandro Musesti

Recent advancements in model checking have demonstrated significant potential across diverse applications, particularly in signal and image analysis. Medical imaging stands out as a critical domain where model checking can be effectively…

计算机视觉与模式识别 · 计算机科学 2025-01-08 Elhoucine Elfatimi , Lahcen El fatimi

Bone remodelling maintains the functionality of skeletal tissue by locally coordinating bone-resorbing cells (osteoclasts) and bone-forming cells (osteoblasts) in the form of Bone Multicellular Units (BMUs). Understanding the emergence of…

组织与器官 · 定量生物学 2011-05-26 Pascal R Buenzli , Peter Pivonka , David W Smith

The tubulin-like protein FtsZ is crucial for cytokinesis in bacteria and many archaea, forming a ring-shaped structure called the Z-ring at the site of cell division. Despite extensive research, the self-assembly of Z-rings is not entirely…

生物物理 · 物理学 2025-02-17 Rajneesh Kumar , Ramanujam Srinivasan , Debasish Chaudhuri