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This paper considers the segregation of a granular mixture in a rotating drum. Extending a recent kinematic model for grain transport on sandpile surfaces to the case of rotating drums, an analysis is presented for radial segregation in the…

软凝聚态物质 · 物理学 2020-07-03 Saikat Chakraborty , Prabhu R. Nott , J. Ravi Prakash

It is common in anthropology and paleontology to address questions about extant and extinct species through the quantification of osteological features observable in micro-computed tomographic (micro-CT) scans. In cases where remains were…

图像与视频处理 · 电气工程与系统科学 2021-04-23 Amirsaeed Yazdani , Yung-Chen Sun , Nicholas B. Stephens , Timothy Ryan , Vishal Monga

Tunnel lining crack is a crucial indicator of tunnels' safety status. Aiming to classify and segment tunnel cracks with enhanced accuracy and efficiency, this study proposes a two-step deep learning-based method. An automatic tunnel image…

计算机视觉与模式识别 · 计算机科学 2025-07-21 Yong Feng , Xiaolei Zhang , Shijin Feng , Yong Zhao , Yihan Chen

Automatic crack detection and segmentation play a significant role in the whole system of unmanned aerial vehicle inspections. In this paper, we have implemented a deep learning framework for crack detection based on classical network…

机器人学 · 计算机科学 2023-02-14 Kangcheng Liu

We present an experimental study of segregation of granular matter in a quasi-two dimensional silo emptying out of an orifice. Size separation is observed when multi-sized particles are used with the larger particles found in the center of…

统计力学 · 物理学 2009-10-31 Azadeh Samadani , A. Pradhan , A. Kudrolli

We study the brittle fragmentation of spheres by using a three-dimensional Discrete Element Model. Large scale computer simulations are performed with a model that consists of agglomerates of many particles, interconnected by beam-truss…

统计力学 · 物理学 2009-11-13 H. A. Carmona , F. K. Wittel , F. Kun , H. J. Herrmann

There is a high demand for fully automated methods for the analysis of primary particle size distributions of agglomerated, sintered or occluded primary particles, due to their impact on material properties. Therefore, a novel, deep…

计算机视觉与模式识别 · 计算机科学 2019-11-20 Max Frei , Frank Einar Kruis

Computer vision and machine learning tools offer an exciting new way for automatically analyzing and categorizing information from complex computer simulations. Here we design an ensemble machine learning framework that can independently…

计算机视觉与模式识别 · 计算机科学 2021-09-06 Maarja Bussov , Joonas Nättilä

We study the fragment size distributions after crushing of single and many particles under uniaxial compression inside a cylindrical container by means of numerical simulations. Under the assumption that breaking goes through the bulk of…

软凝聚态物质 · 物理学 2019-01-16 Pavel S. Iliev , Falk K. Wittel , Hans J. Herrmann

Bars are important drivers of galaxy evolution, influencing many physical processes and properties. Characterising bars is a difficult task, especially in large-scale surveys. In this work, we propose a novel morphological segmentation…

星系天体物理 · 物理学 2024-05-22 Mitchell K. Cavanagh , Kenji Bekki , Brent A. Groves

We investigate axial segregation of binary mixtures in a laterally shaken horizontal channel formed by ratchet-like sidewalls that appear as concatenated trapeziums when not offset axially. Grain mixtures shaken in such a channel are…

软凝聚态物质 · 物理学 2022-10-18 Mohammed Istafaul Haque Ansari , Ashish Bhateja , Ishan Sharma

Granular materials are known to separate by size under a variety of circumstances. Experiments presented here and elucidated by modeling and MD simulation document a new segregation mechanism, namely segregation by friction. The experiments…

软凝聚态物质 · 物理学 2009-11-07 L. Kondic , R. R. Hartley , S. G. K. Tennakoon , B. Painter , R. P. Behringer

Efficient segmentation of smoke plumes is crucial for environmental monitoring and industrial safety, enabling the detection and mitigation of harmful emissions from activities like quarry blasts and wildfires. Accurate segmentation…

计算机视觉与模式识别 · 计算机科学 2025-02-19 Xuesong Liu , Emmett J. Ientilucci

We consider a three dimensional system consisting of a large number of small spherical particles, distributed in a range of sizes and heights (with uniform distribution in the horizontal direction). Particles move vertically at a…

统计力学 · 物理学 2007-12-05 P. Horvai , S. V. Nazarenko , T. H. M. Stein

Surface cracks on buildings, natural walls and underground mine tunnels can indicate serious structural integrity issues that threaten the safety of the structure and people in the environment. Timely detection and monitoring of cracks are…

计算机视觉与模式识别 · 计算机科学 2021-11-24 Faris Azhari , Charlotte Sennersten , Michael Milford , Thierry Peynot

At the extreme energies of the Large Hadron Collider, massive particles can be produced at such high velocities that their hadronic decays are collimated and the resulting jets overlap. Deducing whether the substructure of an observed jet…

高能物理 - 实验 · 物理学 2016-06-01 Pierre Baldi , Kevin Bauer , Clara Eng , Peter Sadowski , Daniel Whiteson

It is well known that sedimentary rocks having same porosity can have very different pore size distribution. The pore distribution determines many characteristics of the rock among which, its transport property is often the most useful.…

无序系统与神经网络 · 物理学 2013-02-05 Abhra Giri , Sujata Tarafdar , Philippe Gouze , Tapati Dutta

Accurately estimating the shape of objects in dense clutters makes important contribution to robotic packing, because the optimal object arrangement requires the robot planner to acquire shape information of all existed objects. However,…

机器人学 · 计算机科学 2023-02-24 Zhenyu Wu , Ziwei Wang , Jiwen Lu , Haibin Yan

Motivated by performance optimization of large-scale graph processing systems that distribute the graph across multiple machines, we consider the balanced graph partitioning problem. Compared to the previous work, we study the…

数据结构与算法 · 计算机科学 2019-02-19 Dmitrii Avdiukhin , Sergey Pupyrev , Grigory Yaroslavtsev

Porosity is one of the key properties of dense particle packings like sediment deposits and is influenced by a multitude of grain characteristics such as their size distribution and shape. In the present work, we focus on the form, a…

地球物理 · 物理学 2022-05-17 Christoph Rettinger , Ulrich Rüde , Stefan Vollmer , Roy M. Frings