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Variation in the local thermal history during the laser powder bed fusion (LPBF) process in additive manufacturing (AM) can cause microporosity defects. in-situ sensing has been proposed to monitor the AM process to minimize defects, but…

机器学习 · 计算机科学 2021-12-22 Sina Malakpour Estalaki , Cody S. Lough , Robert G. Landers , Edward C. Kinzel , Tengfei Luo

Graph-based machine learning models for materials properties show great potential to accelerate virtual high-throughput screening of large chemical spaces. However, in their simplest forms, graph-based models do not include any 3D…

化学物理 · 物理学 2024-10-15 Ralf Meyer , Daniel Benjamin Kasman Chu , Heather J. Kulik

Renal compartment segmentation on CT images targets on extracting the 3D structure of renal compartments from abdominal CTA images and is of great significance to the diagnosis and treatment for kidney diseases. However, due to the unclear…

图像与视频处理 · 电气工程与系统科学 2021-08-29 Song Wang , Yuting He , Youyong Kong , Xiaomei Zhu , Shaobo Zhang , Pengfei Shao , Jean-Louis Dillenseger , Jean-Louis Coatrieux , Shuo Li , Guanyu Yang

In this work, we will present a physical model and measurements of the transport of small charge packets in the bulk of thick high resistivity CCD before being collected by the pixel potential wells. A new technique to measure the lateral…

仪器与探测器 · 物理学 2019-06-28 Miguel Sofo Haro , Guillermo Fernandez Moroni , Javier Tiffenberg

An essential metric for the quality of a particle-identification experiment is its statistical power to discriminate between signal and background. Pulse shape discrimination (PSD) is a basic method for this purpose in many nuclear,…

仪器与探测器 · 物理学 2024-05-17 Shubham Dutta , Sayan Ghosh , Satyaki Bhattacharya , Satyajit Saha

The ATLAS Transition Radiation Tracker (TRT) is the outermost of the three sub-systems of the ATLAS Inner Detector at the Large Hadron Collider at CERN. In addition to its tracking capabilities, the TRT provides particle identification…

仪器与探测器 · 物理学 2019-08-13 E. Hines

For an ensemble of nonlinear systems that model, for instance, molecules or photonic systems, we propose a method that finds efficiently the configuration that has prescribed transfer properties. Specifically, we use physics-informed…

计算物理 · 物理学 2021-08-11 G. D. Barmparis , G. P. Tsironis

We present a novel and high-performance 3D object detection framework, named PointVoxel-RCNN (PV-RCNN), for accurate 3D object detection from point clouds. Our proposed method deeply integrates both 3D voxel Convolutional Neural Network…

计算机视觉与模式识别 · 计算机科学 2021-04-12 Shaoshuai Shi , Chaoxu Guo , Li Jiang , Zhe Wang , Jianping Shi , Xiaogang Wang , Hongsheng Li

Many machine learning problems involve regressing variables on a non-Euclidean manifold -- e.g. a discrete probability distribution, or the 6D pose of an object. One way to tackle these problems through gradient-based learning is to use a…

计算机视觉与模式识别 · 计算机科学 2021-10-14 Romain Brégier

We present a machine learning (ML) method for efficient computation of vibrational thermal expectation values of physical properties from first principles. Our approach is based on the non-perturbative frozen phonon formulation in which…

材料科学 · 物理学 2026-03-16 Niraj Aryal , Sheng Zhang , Weiguo Yin , Gia-Wei Chern

Physics-guided machine learning (PGML) has become a prevalent approach in studying scientific systems due to its ability to integrate scientific theories for enhancing machine learning (ML) models. However, most PGML approaches are tailored…

机器学习 · 计算机科学 2025-02-11 Runlong Yu , Chonghao Qiu , Robert Ladwig , Paul Hanson , Yiqun Xie , Xiaowei Jia

Particle tracking microrheology (PT-$\mu$r) exploits the thermal motion of embedded particles to probe the local mechanical properties of soft materials. Despite its appealing conceptual simplicity, PT-$\mu$r requires calibration procedures…

软凝聚态物质 · 物理学 2018-01-03 Paolo Edera , Davide Bergamini , Véronique Trappe , Fabio Giavazzi , Roberto Cerbino

A physics-informed neural network is developed to solve conductive heat transfer partial differential equation (PDE), along with convective heat transfer PDEs as boundary conditions (BCs), in manufacturing and engineering applications where…

机器学习 · 计算机科学 2021-03-29 Navid Zobeiry , Keith D. Humfeld

Physics-informed machine learning (PIML) is a set of methods and tools that systematically integrate machine learning (ML) algorithms with physical constraints and abstract mathematical models developed in scientific and engineering…

An important logistics application of robotics involves manipulators that pick-and-place objects placed in warehouse shelves. A critical aspect of this task corre- sponds to detecting the pose of a known object in the shelf using visual…

计算机视觉与模式识别 · 计算机科学 2016-02-23 Colin Rennie , Rahul Shome , Kostas E. Bekris , Alberto F. De Souza

We devise a novel technique to control the shape of polymer molecular weight distributions (MWDs) in atom transfer radical polymerization (ATRP). This technique makes use of recent advances in both simulation-based, model-free reinforcement…

Nanomechanical resonators have emerged as sensors with exceptional sensitivities. These sensing capabilities open new possibilities in the studies of the thermodynamic properties in condensed matter. Here, we use mechanical sensing as a…

We propose two machine-learning methods based on neural networks, which we respectively call the phase-classification method and the temperature-identification method, for detecting different types of phase transitions in the XXZ models…

统计力学 · 物理学 2023-04-19 Yusuke Miyajima , Masahito Mochizuki

Deep Metric Learning (DML) models rely on strong representations and similarity-based measures with specific loss functions. Proxy-based losses have shown great performance compared to pair-based losses in terms of convergence speed.…

A novel technique using machine learning (ML) to reduce the computational cost of evaluating lattice quantum chromodynamics (QCD) observables is presented. The ML is trained on a subset of background gauge field configurations, called the…

高能物理 - 格点 · 物理学 2019-07-24 Boram Yoon , Tanmoy Bhattacharya , Rajan Gupta