检索结果-内蒙古大学图书馆

arXiv 2024年

作者： Contreras, Cesar Alan Rastegarpanah, Alireza Stolkin, Rustam Chiou, Manolis Department of Metallurgy & Materials Science University of Birmingham BirminghamB15 2TT United Kingdom The Faraday Institution Quad One Harwell Science and Innovation Campus DidcotOX11 0RA United Kingdom Queen Mary University of London School of Electronic Engineering and Computer Science LondonE1 4NS United Kingdom

This paper presents a mini-review of the current state of research in mobile manipulators with variable levels of autonomy, emphasizing their associated challenges and application environments. The need for mobile manipulators in different environments is evident due to the unique challenges and risks each presents. Many systems deployed in these environments are not fully autonomous, requiring human-robot teaming to ensure safe and reliable operations under uncertainties. Through this analysis, we identify gaps and challenges in the literature on Variable Autonomy, including cognitive workload and communication delays, and propose future directions, including whole-body Variable Autonomy for mobile manipulators, virtual reality frameworks, and large language models to reduce operators’ complexity and cognitive load in some challenging and uncertain scenarios. © 2024, CC BY.

关键词： Virtual environments

来源：评论

学校读者我要写书评

暂无评论

Detecting and identifying optical signal attacks on autonomous driving systems

arXiv

引用

arXiv 2021年

作者： Zhang, Jindi Zhang, Yifan Lu, Kejie Wang, Jianping Wu, Kui Jia, Xiaohua Liu, Bin The Department of Computer Science City University of Hong Kong Hong Kong The Department of Computer Science and Engineering University of Puerto Rico at Mayagüez Mayagüez 00682 Puerto Rico The Department of Computer Science University of Victoria VictoriaBCV8P 5C2 Canada The Department of Computer Science and Technology Tsinghua University Beijing China

For autonomous driving, an essential task is to detect surrounding objects accurately. To this end, most existing systems use optical devices, including cameras and light detection and ranging (LiDAR) sensors, to collect environment data in real-time. In recent years, many researchers have developed advanced machine learning models to detect surrounding objects. Nevertheless, the aforementioned optical devices are vulnerable to optical signal attacks, which could compromise the accuracy of object detection. To address this critical issue, we propose a framework to detect and identify sensors that are under attack. Specifically, we first develop a new technique to detect attacks on a system that consists of three sensors. Our main idea is to (1) use data from three sensors to obtain two versions of depth maps (i.e., disparity) and (2) detect attacks by analyzing the distribution of disparity errors. In our study, we use real datasets and the state-of-the-art machine learning model to evaluate our attack detection scheme and the results confirm the effectiveness of our detection method. Based on the detection scheme, we further develop an identification model that is capable of identifying up to n − 2 attacked sensors in a system with one LiDAR and n cameras. We prove the correctness of our identification scheme and conduct experiments to show the accuracy of our identification method. At last, we investigate the overall sensitivity of our framework. Copyright © 2021, The Authors. All rights reserved.

关键词： Cameras

来源：评论

学校读者我要写书评

暂无评论

Blind Quality Assessment of 3D Dense Point Clouds with Structure Guided Resampling

arXiv

引用

arXiv 2022年

作者： Zhou, Wei Yang, Qi Jiang, Qiuping Zhai, Guangtao Lin, Weisi The Department of Electrical and Computer Engineering University of Waterloo WaterlooONN2L 3G1 Canada The Tencent MediaLab Shanghai200030 China The School of Information Science and Engineering Ningbo University Ningbo315211 China The Institute of Image Communication and Network Engineering Shanghai Jiao Tong University Shanghai200240 China The School of Computer Science and Engineering Nanyang Technological University 639798 Singapore

Objective quality assessment of 3D point clouds is essential for the development of immersive multimedia systems in real-world applications. Despite the success of perceptual quality evaluation for 2D images and videos, blind/no-reference metrics are still scarce for 3D point clouds with large-scale irregularly distributed 3D points. Therefore, in this paper, we propose an objective point cloud quality index with Structure Guided Resampling (SGR) to automatically evaluate the perceptually visual quality of 3D dense point clouds. The proposed SGR is a general-purpose blind quality assessment method without the assistance of any reference information. Specifically, considering that the human visual system (HVS) is highly sensitive to structure information, we first exploit the unique normal vectors of point clouds to execute regional pre-processing which consists of keypoint resampling and local region construction. Then, we extract three groups of quality-related features, including: 1) geometry density features;2) color naturalness features;3) angular consistency features. Both the cognitive peculiarities of the human brain and naturalness regularity are involved in the designed quality-aware features that can capture the most vital aspects of distorted 3D point clouds. Extensive experiments on several publicly available subjective point cloud quality databases validate that our proposed SGR can compete with state-of-the-art full-reference, reduced-reference, and no-reference quality assessment algorithms. © 2022, CC BY.

关键词： Multimedia systems

来源：评论

学校读者我要写书评

暂无评论

A New Physical Reservoir Using the Complex Dynamics of Electric Fields in Type-Ii Superconductors Containing Pinning Centers Interacting with Quantized Flux Lines

SSRN

引用

SSRN 2024年

作者： Ueda, Tenma Otabe, Edmund Soji Arita, Ken Usami, Yuki Tanaka, Hirofumi Matsuno, Tetsuya Department of Physics and Computer Science Kyushu Institute of Technology 680–4 Kawazu Iizuka Fukuoka820–8502 Japan Department of Human Intelligence Systems Graduate School of Life Science and Systems Engineering Kyushu Institute of Technology 2–4 Hibikino Wakamatsu Kitakyushu808–019 Japan Research Center for Neuromorphic AI Hardware Kyushu Institute of Technology 2–4 Hibikino Wakamatsu Kitakyushu808–019 Japan Department of Creative Engineering National Institute of Technology Ariake College 150 Higashihagio-Machi Omuta Fukuoka836-8585 Japan

Reservoir computing, which takes advantage of physical phenomena with nonlinearities, is attracting a lot of ***, it is expected to focus on superconductivity, a physical phenomenon with nonlinearities between the output electric field and the input current *** to other physical phenomena used in reservoirs, it is considered that with superconductivity, the nonlinearity can easily be adjusted spatially by pin placement to produce dynamics suitable for *** nonlinearity between the electric field generated by the motion of the quantized magnetic flux lines and the input current density was used to perform a reservoir computing *** waveform generation tasks, a NARMA2 task and a nonlinear-memory task were performed, and all tasks were generally *** was found that the electromagnetic phenomenon in superconductors can be used as a physical reservoir. © 2024, The Authors. All rights reserved.

关键词： Electric lines

来源：评论

学校读者我要写书评

暂无评论

Commutation overshoots based on a novel model for series thyristors during the turn-off process

引用

High Voltage 2020年第5期5卷 501-510页

作者： Yingjie Tang Zheng Xu Huangqing Xiao Bo Yue Xuan Li College of Electric Engineering Zhejiang UniversityHangzhouPeople's Republic of China 2Department of Electrical Engineering and Computer ScienceThe University of Tennessee KnoxvilleUSA 3State Grid Economic and Technology Research InstituteBeijingPeople's Republic of China

The commutation overshoot is an important reference index for the insulation coordination of the converter station as well as the thyristor voltage *** the dispersity of reverse recovery charges of series thyristors may affect commutation overshoots,especially those at the thyristor level,little literature has tried to analyse it in ***,this study compares the turn-off models of independent thyristor and elaborates their applicability to series ***,a novel model for series thyristors during the turn-off process is proposed,based on which the turn-off model of converter valve is also ***,the validity and efficiency of the proposed model are discussed by simulations and it is applied to the analysis of commutation *** analysis shows that though the average model can be used to estimate the valve voltage stresses,it may lead to large errors in the thyristor voltage *** selecting the 1:n−1 distribution as the distribution mode of reverse recovery charge in series thyristors will result in very conservative results.

关键词： series process distribution

来源：评论

学校读者我要写书评

暂无评论

A digital microfluidic single-cell manipulation systemoptimized by extending-depth-of-field device

引用

Journal of Innovative Optical Health sciences 2023年第3期16卷 43-55页

作者： Qiushu Chen Qi Meng Yuzhe Liu Xiangan Long Yawei Kong Longfang Yao Liwen Chen Chuanyong Wu Kaiqin Chu Lan Mi Jiong Ma Department of Optical Science and Engineering Shanghai Engineering Research Center of Ultra-precision Optical Manufacturing Key Laboratory of Micro and Nano Photonic Structures(Ministry of Education)School of Information Science and Technology Fudan University Shanghai 200433P.R.China Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230027 AnhuiP.R.China Institute of Biomedical Engineering and Technology Academy for Engineering and Technology Fudan University Shanghai 200433P.R.China Institute of Photonic Chips Centre for Articial-Intelligence Nanophotonics School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology Shanghai 200093 P.R.China Ruidge Biotech Co.Ltd. No.888Huanhu West 2nd Road Lin-Gang Special AreaChina(Shanghai)Pilot Free Trade Zone Shanghai 200131P.R.China Shanghai Hengxin BioTechnology Ltd.1688 North Guo Quan RdBldg A8Rm 801 Shanghai 200438P.R.China Centre for Articial-Intelligence Nanophotonics School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology Shanghai 200093 P.R.China Shanghai Engineering Research Center of Industrial Microorganisms The Multiscale Research Institute of Complex Systems(MRICS)School of Life SciencesFudan UniversityShanghai 200433P.R.China

Microfuidic systems have been widely utilized in high-throughput biology analysis,but thedificulties in iquid manipulation and cell cultivation limit its *** work has developed a new digital microfluidic(DMF)system for on-demand droplet *** adopting anextending-depth-of-field(EDoF)phase modulator to the optical system,the entire depth of themicrofluidic channel can be covered in one image without any refocusing process,ensuring that 95%of the particles in the droplet are captured within three shots together with shaking *** this system,suspension droplets are generated and droplets containing only oneyeast cll can be recognized,then each single cell is cultured in the array of the *** growth in cell numbers and the green fluorescence protein(GFP)production via fluorescence imaging,the single cell with the highest production can be *** results haveproved the heterogeneity of yeast cells,and showed that the combined system can be applied forrapid single-cell sorting,cultivation,and analysis.

关键词： Single-cell analysis digital microfluidic(DMF) extending-depth-of-field system

来源：评论

学校读者我要写书评

暂无评论

Potential quantum advantage for simulation of fluid dynamics

引用

Physical Review Research 2025年第1期7卷 013036-013036页

作者： Xiangyu Li Xiaolong Yin Nathan Wiebe Jaehun Chun Gregory K. Schenter Margaret S. Cheung Johannes Mülmenstädt Pacific Northwest National Laboratory Richland Washington 99354 USA Petroleum Engineering Colorado School of Mines Golden Colorado 80401 USA College of Engineering Eastern Institute of Technology Ningbo 315200 China Department of Computer Science University of Toronto Toronto Ontario M5S 2E4 Canada Canadian Institute for Advanced Research Toronto Ontario M5S 2E4 Canada Levich Institute and Department of Chemical Engineering CUNY City College of New York New York New York 10031 USA Department of Physics University of Washington Seattle Washington 98195-1560 USA

Numerical simulation of turbulent fluid dynamics needs to either parametrize turbulence—which introduces large uncertainties—or explicitly resolve the smallest scales—which is prohibitively expensive. Here, we provide evidence through analytic bounds and numerical studies that a potential quantum speedup can be achieved to simulate fluid dynamics using quantum computing. Specifically, we provide a lattice Boltzmann formulation of fluid dynamics for which we give evidence that low-order Carleman linearization is much more accurate than previously believed for these systems. This is achieved via a combination of reformulating the Navier-Stokes nonlinearity (u·∇u) to lattice-Boltzmann nonlinearity (u2) and accurately linearizing the dynamical equations, which effectively trades nonlinearity for additional degrees of freedom that add negligible expense in the quantum solver. Based on this, we apply a quantum algorithm for simulating the Carleman-linearized lattice Boltzmann equation and provide evidence that its cost scales logarithmically with system size compared with polynomial scaling in the best known classical algorithms. In this paper, we suggest that a quantum advantage may exist for simulating fluid dynamics, paving the way for simulating nonlinear multiscale transport phenomena in a wide range of disciplines using quantum computing.

关键词： Navier Stokes equations

来源：评论

学校读者我要写书评

暂无评论

Integer Factorization through Func-QAOA

arXiv

引用

arXiv 2023年

作者： Atallah, Mostafa Velmurugan, Haemanth Sharma, Rohan Midha, Siddhant Mamun, Shamim Al Botelho, Ludmila Glos, Adam Salehi, Özlem Department of Physics Faculty of Science Cairo University Giza12613 Egypt Department of Computer Science and Engineering NIT Tiruchirappalli India Department of Applied Geophysics IIT Dhanbad India Department of Electrical Engineering IIT Bombay India Department of Electrical and Electronics Engineering Islamic University of Technology Dhaka Gazipur1704 Bangladesh Joint Doctoral School Silesian University of Technology Akademicka 2A Gliwice Poland Institute of Theoretical and Applied Informatics Polish Academy of Sciences Poland QWorld Association Tallinn Estonia

Integer factorization is a significant problem, with implications for the security of widely-used cryptographic schemes. No efficient classical algorithm for polynomial-time integer factorization has been found despite extensive research. Although Peter Shor’s breakthrough quantum algorithm offers a viable solution, current limitations of noisy intermediate-scale quantum (NISQ) computers hinder its practical implementation. To address this, researchers have explored alternative methods for factorization suitable for NISQ devices. One such method is the Quantum Approximate Optimization Algorithm, which treats factoring as an optimization problem defined over binary bits, resulting in various problematic aspects. In this paper, we explore the Func-QAOA approach for factorization, which premises overcoming some of the limitations of previous approaches and allows the incorporation of more advanced factorization techniques. After reviewing the most promising quantum implementations for integer arithmetics, we present a few illustrative examples to demonstrate the efficacy of the Func-QAOA approach and discuss methods to reduce the search space to speed up the optimization process. Copyright © 2023, The Authors. All rights reserved.

关键词： Factorization

来源：评论

学校读者我要写书评

暂无评论

Adaptive classifier-based intrusion detection system using logistic regression and Euclidean distance on network probe vectors in resource constrained networks

引用

International Journal of Information and computer Security 2021年第3-4期16卷 226-238页

作者： Saha, Rahul Kumar, Gulshan Rai, Mritunjay Kumar Kim, Hye-Jin Department of Computer Science and Engineering Lovely Professional University Jalandhar-Delhi G.T. Road Punjab Phagwara144-411 India Department of Electronics and Communication Engineering Lovely Professional University Jalandhar-Delhi G.T. Road Punjab Phagwara144-411 India Business Administration Research Institute Sungshin W. University 2 Bomun-ro 34da gil Seongbuk-gu Seoul Korea Republic of

Intrusion detection system is a second layer of security in network security paradigm. With the progressing wireless technologies, the malicious activities are also increased with a rapid pace. But to secure the data communication in such environment, we need to have intrusion detection mechanism in use. Several mechanisms are introduced for the intrusion detection purpose. These existing algorithms are also capable of incorporating adaptive features but lack in the complexity and usability issues. Moreover, the real time adaptive learning is a missing link in these algorithms. In this paper, we have proposed a model of intrusion detection that deals with the learning mechanism on network probe data and identifies the intrusion by detecting the outliers with logistic regression. We have used Euclidean distance for outlier detection. The results show that our model is less complex in terms of time consumption and efficiently detects the intrusions. Copyright © 2021 Inderscience Enterprises Ltd.

关键词： Intrusion detection

来源：评论

学校读者我要写书评

暂无评论

Recent advancements in microfluidic-based biosensors for detection of genes and proteins: Applications and techniques

引用

Biosensors and Bioelectronics: X 2024年 19卷

作者： Siavashy, Saeed Soltani, M. Rahimi, Shayan Hosseinali, Mehraveh Guilandokht, Zahra Raahemifar, Kaamran Department of Mechanical Engineering K. N. Toosi University of Technology Tehran Iran Department of Electrical and Computer and Engineering University of Waterloo Waterloo Canada University of Waterloo Waterloo Canada Centre for Sustainable Business International Business University Toronto Canada Mork Family Department of Chemical Engineering and Material Science University of Southern California Los Angeles United States School of Pharmacy٫ Faculty of Science University of Waterloo Waterloo Ontario Canada 200 University Avenue West WaterlooONN2L 3G1 Canada Department of Life Sciences and Biotechnology Shahid Beheshti University Tehran Iran Penn State UniversityStateCollege PA16801 United States School of Optometry and Vision Science Faculty of Science University of Waterloo 200 University Ave. W WaterlooONN2L 3G1 Canada Department of Chemical Engineering Faculty of Engineering University of Waterloo 200 University Ave. W WaterlooONN2L 3G1 Canada

This article has tried to provide an overview of the most sophisticated microfluidic biosensors for identifying nucleic acids and proteins at the site of treatment. Microfluidics, which also automates sample preparation and reduces processing time and reagent consumption, enables the analysis of small sample quantities. Microfluidics and biosensor technologies collaborate to provide diagnostics at the point of care with high throughput analysis, portability, and disposability. The high sensitivity and selectivity requirements, false response errors, and integration with other essential modules are some of the challenges posed by this merger. The broad categories of protein-based and DNA-based biosensor technology are covered in this review. Also, recent advancements in coupling the biosensors to microfluidics, the main challenges and potential solutions in deploying microfluidic biosensors for point-of-care diagnostics, and the most recent developments in these areas have been discussed. © 2024

关键词： Biosensors

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：