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Rotation speed is a key metric for many applications, such as calibrating electric motors in a factory, monitoring a car's engine health, detecting faults in electrical appliances, and more. However, existing measurement techniques have…

网络与互联网体系结构 · 计算机科学 2025-03-17 Rahul Hoskeri , Hua Huang

The spin inertia measurement is a recently emerged tool to study slow spin dynamics, which is based on the excitation of the system by a train of circularly polarized pulses with alternating helicity. Motivated by the experimental results…

介观与纳米尺度物理 · 物理学 2018-09-19 D. S. Smirnov , E. A. Zhukov , E. Kirstein , D. R. Yakovlev , D. Reuter , A. D. Wieck , M. Bayer , A. Greilich , M. M. Glazov

This paper proposes a global iterative sliding mode control approach for high-precision contouring tasks of a flexure-linked biaxial gantry system. For such high-precision contouring tasks, it is the typical situation that the involved…

系统与控制 · 电气工程与系统科学 2022-01-28 Wenxin Wang , Jun Ma , Zilong Cheng , Xiaocong Li , Clarence W de Silva , Tong Heng Lee

Involuntary motion during weight-bearing cone-beam computed tomography (CT) scans of the knee causes artifacts in the reconstructed volumes making them unusable for clinical diagnosis. Currently, image-based or marker-based methods are…

计算机视觉与模式识别 · 计算机科学 2020-10-22 Jennifer Maier , Marlies Nitschke , Jang-Hwan Choi , Garry Gold , Rebecca Fahrig , Bjoern M. Eskofier , Andreas Maier

Computed tomography (CT) relies on precise patient immobilization during image acquisition. Nevertheless, motion artifacts in the reconstructed images can persist. Motion compensation methods aim to correct such artifacts post-acquisition,…

图像与视频处理 · 电气工程与系统科学 2024-05-30 Mareike Thies , Fabian Wagner , Noah Maul , Siyuan Mei , Mingxuan Gu , Laura Pfaff , Nastassia Vysotskaya , Haijun Yu , Andreas Maier

MR image sparsity/compressibility has been widely exploited for imaging acceleration with the development of compressed sensing. A sparsity-based approach to rigid-body motion correction is presented for the first time in this paper. A…

计算机视觉与模式识别 · 计算机科学 2013-02-04 Zai Yang , Cishen Zhang , Lihua Xie

Sensor-to-segment calibration is a crucial step in inertial motion tracking. When two segments are connected by a hinge joint, for example in human knee and finger joints as well as in many robotic limbs, then the joint axis vector must be…

系统与控制 · 计算机科学 2019-03-19 Fredrik Olsson , Thomas Seel , Dustin Lehmann , Kjartan Halvorsen

Indentation tests are largely exploited in experiments to characterize the mechanical and fracture properties of the materials from the resulting crack patterns. This work proposes an efficient theoretical and computational framework, whose…

材料科学 · 物理学 2023-06-26 Maria Rosaria Marulli , Jacopo Bonari , Josè Reinoso , Marco Paggi

We present a novel method to image spin properties of spintronic systems using the spatially confined field of a scanned micromagnetic probe, in conjunction with existing electrical or optical global spin detection schemes. It is thus…

介观与纳米尺度物理 · 物理学 2011-01-18 V. P. Bhallamudi , A. J. Berger , D. E. Labanowski , D. Stroud , P. C. Hammel

Accurate inertia estimates and forecasts are crucial to support the system operation in future low-inertia power systems. A large literature on inertia estimation methods is available. This paper aims to provide an overview and…

系统与控制 · 电气工程与系统科学 2020-08-31 Evelyn Heylen , Goran Strbac , Fei Teng

Inertia Axes are involved in many techniques for image content measurement when involving information obtained from lines, angles, centroids... etc. We investigate, here, the estimation of the main axis of inertia of an object in the image.…

计算机视觉与模式识别 · 计算机科学 2023-03-24 Aicha Baya Goumeidane , Djemel Ziou , Nafaa Nacereddine

Magneto-optical sensors including spin noise spectroscopies and magneto-optical Kerr effect microscopies are now ubiquitous tools for materials characterization that can provide new understanding of spin dynamics, hyperfine interactions,…

量子物理 · 物理学 2022-02-10 Yun-Yi Pai , Claire E. Marvinney , Chengyun Hua , Raphael C. Pooser , Benjamin J. Lawrie

Low internal friction coatings are key components of advanced technologies such as optical atomic clocks and high-finesse optical cavity and often lie at the forefront of the most advanced experiments in Physics. Notably, increasing the…

Visual odometry techniques typically rely on feature extraction from a sequence of images and subsequent computation of optical flow. This point-to-point correspondence between two consecutive frames can be costly to compute and suffers…

计算机视觉与模式识别 · 计算机科学 2025-12-02 Chenqi Zhu , Levi Burner , Yiannis Aloimonos

In medicolegal situations, the consequences of a stabbing incident are described in terms that are qualitative without being quantitative. Here, the mechanical variables involved in knife-tissue penetration events are used to determine the…

Recent advancements in constrained kinematic control make it an attractive strategy for controlling robots with arbitrary geometry in challenging tasks. Most current works assume that the robot kinematic model is precise enough for the task…

机器人学 · 计算机科学 2023-09-21 Murilo Marques Marinho , Bruno Vilhena Adorno

The determination of the contact area is a key step to derive mechanical properties such as hardness or an elastic modulus by instrumented indentation testing. Two families of procedures are dedicated to extracting this area: on the one…

材料科学 · 物理学 2016-08-14 L. Charleux , V. Keryvin , M. Nivard , J. -P. Guin , J. -C. Sanglebœuf , Y. Yokoyama

We present effects of dislocation inertia on the driven dislocation glide through local immobile pinnings using a stochastic computational model. The global dislocation velocity at a higher stress range is found noticeably dependent on the…

材料科学 · 物理学 2007-05-23 Masato Hiratani , Vasily V. Bulatov

Spin noise sets fundamental limits to the precision of measurements using spin-polarized atomic vapors, such as performed with sensitive atomic magnetometers. Spin squeezing offers the possibility to extend the measurement precision beyond…

原子物理 · 物理学 2009-11-13 I. K. Kominis

Accelerator performance often deteriorates with time during a long period of operation due to secular changes in the machine components or the surrounding environment. In many cases some tuning knobs are effective in compensating the…

加速器物理 · 物理学 2022-12-21 Zhe Zhang , Minghao Song , Xiaobiao Huang