检索结果-内蒙古大学图书馆

作者： Kim, HyungTae Lee, duk-Yeon Choi, dongwoon Kang, Jaehyeon Lee, dong-Wook Digital Transformation R&D Department Korea Institute of Industrial Technology Ansan Gyeonggi15588 Korea Republic of Applied Robot R&D Department Korea Institute of Industrial Technology Ansan Gyeonggi15588 Korea Republic of

A digital focus index (dFI) is a value used to determine image focus in scientific apparatus and smart devices. Automatic focus (AF) is an iterative and time-consuming procedure;however, its processing time can be reduced using a general processing unit (GPU) and a multi-core processor (MCP). In this study, parallel architectures of a minimax search algorithm (MSA) are applied to two dFIs: range algorithm (rA) and image contrast (CT). The dFIs are based on a histogram;however, the parallel computation of the histogram is conventionally inefficient because of the bank conflict in shared memory. The parallel architectures of rA and CT are constructed using parallel reduction for MSA, which is performed through parallel relative rating of the image pixel pairs and halved the rating in every step. The array size is then decreased to one, and the minimax is determined at the final reduction. Kernels for the architectures are constructed using open source software to make it relatively platform independent. The kernels are tested in a hexa-core PC and an embedded device using Lenna images of various sizes based on the resolutions of industrial cameras. The performance of the kernels for the dFIs was investigated in terms of processing speed and computational acceleration;the maximum acceleration was 32.6× in the best case and the MCP exhibited a higher performance. Copyright © 2023 KSII.

关键词： Iterative methods

来源：评论

学校读者我要写书评

暂无评论

reinforcement Learning Based Position Control of 1-dOF rotational Hydraulic Actuator

Reinforcement Learning Based Position Control of 1-DOF Rotat...

引用

International Conference on Control, Automation and Systems ( ICCAS)

作者： Hokwon Kang Jin Tak Kim Sangsin Park Jungsan Cho Department of Robotics Engineering University of Science and Technology(UST) Daejeon Korea The Hydraulic Robot Laboratory Robot R&D Group Korea Institute of Industrial Technology(KITECH) Ansan South Korea

ISBN: (数字)9788993215380

ISBN: (纸本)9798331517939

In this study, we propose a reinforcement learning (rL) based position control method for a one-degree-of-freedom (1-dOF) rotational hydraulic actuator. Controlling hydraulic actuators is challenging due to their nonlinear characteristics and complex structure. reinforcement learning offers the advantage of enabling control through learning without requiring a detailed understanding of the model, using virtual environments. However, simulators do not perfectly replicate real-world conditions. To address this, we aim to enhance the fidelity of the simulation and improve the performance of reinforcement learning-based controllers by integrating real-world data into the simulation using deep neural networks (dNN). The reinforcement learning is trained using the Proximal Policy Optimization (PPO) algorithm, and it is validated through experiments with step and sine inputs.

关键词： Legged locomotion refining Hydraulic actuators Position control Virtual environments reinforcement learning Artificial neural networks Hydraulic systems Control systems Optimization

来源：评论

学校读者我要写书评

暂无评论

Workspace Analysis of Cable-driven Continuum Manipulator Using Universal Joint

Workspace Analysis of Cable-Driven Continuum Manipulator Usi...

引用

International Conference on Ubiquitous robots (Ur)

作者： Myung-oh Kim dongwoon Choi duck-Yeon Lee dong-Wook Lee Department of Mechanical Engineering Hanynag University Seoul Korea Applied Robot R&D Department Korea Institute of Industrial Technology (KITECH) Ansan Korea

This paper presents a comprehensive study on the workspace of a continuum manipulator using a universal joint. The research focuses on analyzing the effect of different parameters such as joint angles and flexible link lengths on the workspace of the manipulator. A mathematical model is developed to determine the workspace and validate the results through simulations. The study also includes a discussion on the limitations and challenges of using a universal joint in continuum manipulators and ways to overcome them. The findings of this research contribute to the understanding of the workspace of continuum manipulators and can be used to design more effective and efficient manipulator systems.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Self-Supervised Button recognition for Indoor Mobile robots

Self-Supervised Button Recognition for Indoor Mobile Robots

引用

International Symposium on Soft Computing and Intelligent Systems (SCIS)

作者： Jeong-Won Pyo Kwang-Hee Lee Jung-San Cho Tae-Yong Kuc Electrical and Computer Engineering SungKyunKwan University Suwon Korea Robot R&D Group Korea Institute of Industrial Technology Ansan korea

In recent years, with the rapid advances in technology, the precision and accuracy of indoor autonomous driving have also improved remarkably. However, despite the development of these technologies, there are still many difficulties to perform services through real mobile robots. In this paper, we focused on the mobile robot that drives in multiple spaces in a multi-story building using an elevator. In order to operate the elevator, the mobile robot must be able to operate by pressing the elevator button itself. To solve this problem, in this paper, we propose self-supervised button recognition. We created fake buttons for self-supervised learning and placed these on random backgrounds to increase the diversity of the dataset. In addition, the generated realistic buttons are re-generated like real buttons through a GAN. In experiments, we presented that our self-supervised button recognition was performed in an actual environment without separate labeling.

关键词： Training Self-supervised learning Pressing Generative adversarial networks Elevators Mobile robots Labeling

来源：评论

学校读者我要写书评

暂无评论

Numerical Analysis of Soliton Propagation in a Tapered Waveguide

引用

Journal of Optical Communications 2023年第4期44卷 535-538页

作者： raja, M.A. ranathive, S. Sivaram, M. Krishna Kumar, L. Vinoth Kumar, K. Amiri, Iraj S Department of Biomedical Engineering Dr. N.G.P. Institute of Technology Coimbatore India Department of CSE Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Chennai India Department of Computer Networking Lebanese French University Kurdistan Region Erbil Iraq Department of CSE Nehru Institute of Engineering & Technology Coimbatore India Department of EEE Karunya Institute of Technology and Sciences Coimbatore India Computational Optics Research Group Advanced Institute of Materials Science Ton Duc Thang University Ho Chi Minh City Viet Nam Faculty of Applied Sciences Ton Duc Thang University Ho Chi Minh City Viet Nam

In this paper, dispersion decreased profiled tapered fiber is designed whose dispersion characteristics and soliton propagation is investigated numerically using darboux transformation. The result reveals that solitons pulse gets compression as it propagates along the length of the tapered region. © 2019 Walter de Gruyter GmbH, Berlin/Boston.

关键词： dispersion (waves)

来源：评论

学校读者我要写书评

暂无评论

Path Percolation in Quantum Communication Networks

引用

Physical review Letters 2025年第3期134卷 030803-030803页

作者： Xiangyi Meng Bingjie Hao Balázs ráth István A. Kovács Department of Physics Applied Physics and Astronomy Rensselaer Polytechnic Institute Troy New York 12180 USA Department of Physics and Astronomy Northwestern University Evanston Illinois 60208 USA Department of Stochastics Institute of Mathematics Budapest University of Technology and Economics H-1111 Budapest Hungary HUN-REN-BME Stochastics Research Group H-1111 Budapest Hungary Alfréd Rényi Institute of Mathematics H-1053 Budapest Hungary Northwestern Institute on Complex Systems Northwestern University Evanston Illinois 60208 USA Department of Engineering Sciences and Applied Mathematics Northwestern University Evanston Illinois 60208 USA

In a quantum communication network, links represent entanglement between qubits located at different nodes. Even if two nodes are not directly linked by shared entanglement, they can still communicate via routing protocols. However, in contrast to classical communication, each quantum communication event removes all participating links along the routed path, disrupting the quantum communication network. Here, we propose a simple model, where randomly selected pairs of nodes communicate through the shortest paths. Each time such a path is used, all participating links are eliminated, leading to a correlated percolation process that we call “path percolation.” We study path percolation both numerically and analytically and present the phase diagram of the steady states as a function of the rate at which new links are being added to the network. As a key result, the steady state is found to be independent of the initial network topologies when new links are added randomly between disconnected components. We close by discussing extensions of path percolation and link replenishment, along with their potential applications.

关键词： Quantum entanglement

来源：评论

学校读者我要写书评

暂无评论

Trotting gait control of quadruped robot based on Trajectory Planning

Trotting gait control of quadruped robot based on Trajectory...

引用

World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM)

作者： Baoping Ma Ziqian Liu Changwu Peng Xiaoqiang Li R&D Engineer. Laboratory of the Quadruped Robot The 21st Research Institute of China Electronics Technology Group Corporation Shanghai China R & D Engineer The 21st Research Institute of China Electronics Technology Group Corporation Shanghai China

ISBN: (纸本)9781665421737

In order to improve the motion stability and environmental adaptability of quadruped robot in trotting gait, a motion control method based on swing leg gait planning is proposed in this paper. The kinematics model of quadruped robot is established, the forward and inverse solutions are obtained, and the trajectory curve of swinging leg of quadruped robot in trotting gait is planned. The simulation model is established in AdAMS to verify that the trotting gait control method based on the foot trajectory planning of the swing leg is effective and feasible.

关键词： Legged locomotion Adaptation models Torque Trajectory planning Stability analysis Trajectory Quadrupedal robots

来源：评论

学校读者我要写书评

暂无评论

Hand-eye Calibration using Images restored by deep Learning

Hand-eye Calibration using Images Restored by Deep Learning

引用

IEEE International Conference on Consumer Electronics-Asia (ICCE-Asia)

作者： Hyun-Su Kim Tae-Yong Kuc Kwang-Hee Lee Sungkyunkwan University Robot R&D Group Korea Institute of Industrial Technology

ISBN: (数字)9781728161648

ISBN: (纸本)9781728161655

The problem of determining the transformation between the end-effector and the camera attached to the robot arm is called hand-eye calibration. For this calibration, the pose of the robot and the image data of the calibrated camera must be acquired. Since industrial robots use fixed focus cameras, the depth of field is limited, and variable focus lenses cannot determine the camera position or pose with high accuracy because the parameters of the camera change. If the pose of a robot is out of depth of field (dOF), the camera is out of focus, and the image is blurred. If hand-eye calibration is performed using these images, the resulting data includes errors. In this paper, image restoration is performed using deep learning on a blurred image where a marker cannot be found because it is out of focus. This technique is used to sharply restore images and demonstrate a technique for finding markers. We improved the precision of the hand-eye calibration problem by obtaining a clear image restored even in various pose of the robot and reducing the error that occurs in the blurred image.

关键词： Calibration Cameras robots Image restoration robot vision systems robot kinematics deep learning

来源：评论

学校读者我要写书评

暂无评论

Computational biology in topical bioactive peptide discovery for cosmeceutical application:a concise review

引用

Biomedical Engineering Communications 2023年第3期2卷 7-15页

作者： Xu-Hui Li Wen-rou Su Fei-Fei Wang Ke Li Jing-Yong Zhu Si-Yu Zhu Si-Ning Kang Cong-Fen He Jun-Xiang Li Xiao Lin AGECODE R&D Center Yangtze Delta Region Institute of Tsinghua UniversityJiaxing 314000China Zhejiang Provincial Key Laboratory of Applied Enzymology Yangtze Delta Region Institute of Tsinghua UniversityJiaxing 314000China Yunnan Botanee Bio-technology Group Co. Ltd.Yunnan 650000China Yunnan Yunke Characteristic Plant Extraction Laboratory Co. Ltd.Yunnan 650000China Shenzhen Accompany Technology Co. LtdShenzhen 518000China College of Life Sciences and Medicine Zhejiang Sci-tech UniversityHangzhou 310018China Harvest Biotech(Zhejiang)Co. Ltd.Jiaxing 314000China School of Beijing Key Lab of Plant Resources Research and Development Beijing Technology and Business UniversityBeijing 100048China School of Life Sciences Northwestern Polytechnical UniversityXi’an 710072China

regenerative medicine and anti-aging research have made great strides at the molecular and cellular levels in dermatology and the medical aesthetic field,targeting potential treatments with skin therapeutic and intervention pathways,which make it possible to develop effective skin regeneration and repair *** the rapid development of computational biology,bioinformatics as well as artificial intelligence(A.I.),the development of new ingredients for regenerative medicine has been greatly accelerated,and the success rate has been *** application cases have appeared in topical skin regeneration and repair *** review will briefly introduce the application of bioactive peptides in skin repair and anti-aging as emerging ingredients in cosmeceutics and emphasize how *** computational biology technology may accelerate the development of innovative peptide molecules and ultimately translate them into potential skin regenerative and anti-aging ***,two research routines have been summarized and current limitations as well as directions were discussed for border applications in future research.

关键词： computational biology artificial intelligence cosmeceutical bioactive peptide regenerative medicine

来源：评论

学校读者我要写书评

暂无评论

THE INTErIOr OF rANdOMLY PErTUrBEd SELF-SIMILAr SETS ON THE LINE

arXiv

引用

arXiv 2023年

作者： dekking, Michel Simon, Károly Székely, Balázs Szekeres, Nóra CWI Amsterdam and Delft Institute of Applied Mathematics Technical University of Delft Netherlands Department of Stochastics Budapest University of Technology and Economics MTA-BME Stochastics Research Group Budapest University of Technology and Economics Műegyetem rkp. 3 BudapestH-1111 Hungary Alfréd Rényi Institute Hungary Department of Stochastics Budapest University of Technology and Economics B.O.box 91 H-1529 Hungary

Can we find a self-similar set on the line with positive Lebesgue measure and empty interior? Currently, we do not have the answer for this question for deterministic self-similar sets. In this paper we answer this question negatively for random self-similar sets which are defined with the construction introduced in the paper Jordan, Pollicott and Simon (Commun. Math. Phys., 2007). For the same type of random self-similar sets we prove the Palis-Takens conjecture which asserts that at least typically the algebraic difference of dynamically defined Cantor sets is either large in the sense that it contains an interval or small in the sense that it is a set of zero Lebesgue *** Codes Primary 28A80 Secondary 60J80, 60J85 © 2023, CC BY.

关键词： Fractals

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：