检索结果-内蒙古大学图书馆

Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXX 2023

作者： Patra, S. Trujillo, C. Doblas, A. Department of Electrical and Computer Engineering The University of Memphis TN United States School of Applied Sciences and Engineering Universidad EAFIT Medellin Colombia

ISBN: (纸本)9781510658752

The advantages of confocal microscopy over widefield microscopy are their ability to produce optically sectioned images and their ability to produce multi-color imaging in which different organelles within the biological specimen are stained using multiple dyes, enabling colocalization studies. These features make confocal microscopy a widely used tool to provide valuable morphological and functional information within cells and tissues. One of the major drawbacks of confocal microscopy is its limited spatial resolution. Here, we train two generative adversarial networks using paired and unpaired data of low- and high-resolution images to improve the spatial resolution in confocal microscopy. © 2023 SPIE. All rights reserved.

关键词： Confocal microscopy

来源：评论

学校读者我要写书评

暂无评论

Overview of the automatic reconstruction method for quantitative phase imaging using a digital holographic microscope operating in non-telecentric regime 9

Overview of the automatic reconstruction method for quantita...

引用

Quantitative Phase Imaging IX 2023

作者： Bogue-Jimenez, Brian Trujillo, C. Doblas, A. Department of Electrical and Computer Engineering The University of Memphis TN United States School of Applied Sciences and Engineering Universidad EAFIT Medellin Colombia

ISBN: (纸本)9781510658837

Digital Holographic microscopy (DHM), which provides quantitative phase imaging (QPI), has been widely applied in material and biological applications. The performance of DHM technologies relies heavily on computational reconstruction methods to provide accurate phase measurements. For example, non-telecentric DHM systems should compensate for the spherical wavefront associated with a non-telecentric configuration. The size of the ±1 diffraction orders in the hologram spectrum depends inversely on the radius of the curvature of the spherical wavefront introduced by the non-telecentric DHM system. Therefore, one can estimate the radius of curvature of the spherical wavefront by analyzing the hologram spectrum. Here, we outline the steps for the automatic reconstruction of phase images without distortions and with minimum user input from a hologram recorded in a non-telecentric DHM system. The proposed reconstruction approach can be divided into six main steps. The first step automatically selects the +1 diffraction order in the hologram spectrum. Secondly, the spherical wavefront parameters and the interference angle are estimated by analyzing the size and position of the selected +1 order. The third and fourth steps are the spatial filtering of the +1 order and the compensation of the interference angle, respectively. The next step involves the estimation of the center of the spherical wavefront. Finally, there is a fine-tuning step to optimize the estimated parameters and provide a phase image with minimum phase distortions. We have identified the relevant metrics in each step, compared multiple approaches, and selected the one with the higher performance for all our experimental holograms. © 2023 SPIE.

关键词： Image reconstruction

来源：评论

学校读者我要写书评

暂无评论

Image Reconstruction Via Autoencoding Sequential Deep Image Prior 38

Image Reconstruction Via Autoencoding Sequential Deep Image ...

引用

38th Conference on Neural Information Processing Systems, NeurIPS 2024

作者： Alkhouri, Ismail R. Liang, Shijun Bell, Evan Qu, Qing Wang, Rongrong Ravishankar, Saiprasad Department of Computational Mathematics Science & Engineering Michigan State University United States Department of Electrical Engineering & Computer Science University of Michigan Ann Arbor United States Department of Biomedical Engineering Michigan State University United States Department of Mathematics Michigan State University United States

Recently, Deep Image Prior (DIP) has emerged as an effective unsupervised one-shot learner, delivering competitive results across various image recovery problems. This method only requires the noisy measurements and a forward operator, relying solely on deep networks initialized with random noise to learn and restore the structure of the data. However, DIP is notorious for its vulnerability to overfitting due to the overparameterization of the network. Building upon insights into the impact of the DIP input and drawing inspiration from the gradual denoising process in cutting-edge diffusion models, we introduce Autoencoding Sequential DIP (aSeqDIP) for image reconstruction. This method progressively denoises and reconstructs the image through a sequential optimization of network weights. This is achieved using an input-adaptive DIP objective, combined with an autoencoding regularization term. Compared to diffusion models, our method does not require training data and outperforms other DIP-based methods in mitigating noise overfitting while maintaining a similar number of parameter updates as Vanilla DIP. Through extensive experiments, we validate the effectiveness of our method in various image reconstruction tasks, such as MRI and CT reconstruction, as well as in image restoration tasks like image denoising, inpainting, and non-linear deblurring. Our code is available at the GitHub repository aSeqDIP. © 2024 Neural information processing systems foundation. All rights reserved.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Wireless Federated Learning over UAV-enabled Integrated Sensing and Communication

Wireless Federated Learning over UAV-enabled Integrated Sens...

引用

2024 IEEE Conference on Standards for Communications and Networking, CSCN 2024

作者： Shaon, Shaba Nguyen, Tien Mohjazi, Lina Kaushik, Aryan Nguyen, Dinh C. University of Alabama in Huntsville Department of Electrical and Computer Engineering United States Lac Hong University Department of Electrical and Electronics Engineering Viet Nam University of Glasgow James Watt School of Engineering United Kingdom Manchester Metropolitan University Department of Computing & Mathematics United Kingdom

ISBN: (纸本)9798331507428

This paper studies a new latency optimization problem in unmanned aerial vehicles (UAVs)-enabled federated learning (FL) with integrated sensing and communication. In this setup, distributed UAVs participate in model training using sensed data and collaborate with a base station (BS) serving as FL aggregator to build a global model. The objective is to minimize the FL system latency over UAV networks by jointly optimizing UAVs' trajectory and resource allocation of both UAVs and the BS. The formulated optimization problem is troublesome to solve due to its non-convexity. Hence, we develop a simple yet efficient iterative algorithm to find a high-quality approximate solution, by leveraging block coordinate descent and successive convex approximation techniques. Simulation results demonstrate the effectiveness of our proposed joint optimization strategy under practical parameter settings, saving the system latency up to 68.54% compared to benchmark schemes. © 2024 IEEE.

关键词： Resource allocation

来源：评论

学校读者我要写书评

暂无评论

Message Verification Protocol Based on Bilinear Pairings and Elliptic Curves for Enhanced Security in Vehicular Ad Hoc Networks

引用

computers, Materials & Continua 2024年第10期81卷 1029-1057页

作者： Vincent Omollo Nyangaresi Arkan A.Ghaib Hend Muslim Jasim Zaid Ameen Abduljabbar Junchao Ma Mustafa A.Al Sibahee Abdulla J.Y.Aldarwish Ali Hasan Ali Husam A.Neamah Department of Computer Science and Software Engineering Jaramogi Oginga Odinga University of Science and TechnologyBondo40601Kenya Department of Applied Electronics Saveetha School of EngineeringSIMATSChennaiTamilnadu602105India Information Technology Department Management Technical CollegeSouthern Technical UniversityBasrah61004Iraq Department of Computer Science College of Education for Pure SciencesUniversity of BasrahBasrah61004Iraq College of Big Data and Internet Shenzhen Technology UniversityShenzhen518118China Huazhong University of Science and Technology Shenzhen InstituteShenzhen518000China National Engineering Laboratory for Big Data System Computing Technology Shenzhen UniversityShenzhen518060China Computer Technology Engineering Department Iraq University CollegeBasrah61004Iraq Department of Mathematics College of Education for Pure SciencesUniversity of BasrahBasrah61004Iraq Institute of Mathematics University of DebrecenDebrecenH-4002Hungary Department of Electrical Engineering and Mechatronics Faculty of EngineeringUniversity of DebrecenDebrecen4028Hungary

Vehicular ad hoc networks(VANETs)provide intelligent navigation and efficient route management,resulting in time savings and cost reductions in the transportation ***,the exchange of beacons and messages over public channels among vehicles and roadside units renders these networks vulnerable to numerous attacks and privacy *** address these challenges,several privacy and security preservation protocols based on blockchain and public key cryptography have been proposed ***,most of these schemes are limited by a long execution time and massive communication costs,which make them inefficient for on-board units(OBUs).Additionally,some of them are still susceptible to many *** such,this study presents a novel protocol based on the fusion of elliptic curve cryptography(ECC)and bilinear pairing(BP)*** formal security analysis is accomplished using the Burrows–Abadi–Needham(BAN)logic,demonstrating that our scheme is verifiably *** proposed scheme’s informal security assessment also shows that it provides salient security features,such as non-repudiation,anonymity,and ***,the scheme is shown to be resilient against attacks,such as packet replays,forgeries,message falsifications,and *** the performance perspective,this protocol yields a 37.88%reduction in communication overheads and a 44.44%improvement in the supported security ***,the proposed scheme can be deployed in VANETs to provide robust security at low overheads.

关键词： Attacks bilinear elliptic curve cryptography(ECC) privacy security vehicular ad hoc network(VANET)

来源：评论

学校读者我要写书评

暂无评论

Complex-frequency waves:beat loss and win sensitivity

引用

Light(Science & Applications) 2024年第2期13卷 181-183页

作者： Qingqing Cheng Tao L School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai200093China Department of Respiratory Diseases and Critical Medicine Quzhou Hospital Affiliated to Wenzhou Medical UniversityQuzhou324000China National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesNanjing UniversityNanjing210093China

Recent experiments have demonstrated that synthesized complex-frequency waves can impart a virtual gain to molecule sensing systems,which can effectively restore information lost due to intrinsic molecular *** enhancement notably amplifies the signal of trace molecular vibrational fingerprints,thereby substantially improving the upper limit of sensitivity.

关键词： thereby Complex limit

来源：评论

学校读者我要写书评

暂无评论

A module lattice based construction of post quantum blockchain for secure transactions in Internet of Things

A module lattice based construction of post quantum blockcha...

引用

International Conference on Artificial Intelligence, Blockchain, Computing and Security, ICABCS 2023

作者： Chaudhary, Dharminder Durgarao, M.S.P. Gupta, Pratik Rana, Saurabh Singh, Soumyendra Department of Computer Science and Engineering Amrita School of Computing Amrita Vishwa Vidyapeetham Chennai India Department of Applied Mathematics School of Vocational Studies and Applied Sciences Gautam Buddha University Greater Noida India Department of Mathematics Bennet University Greater Noida India Department of Mathematics Amrita School of Engineering Amrita Vishwa Vidyapeetham Chennai India

ISBN: (纸本)9781032669663

The Fiat-Shamir with Aborts paradigm of Lyubashevsky introduced efficient lattice based signatures. We have used lattice based signature to design post quantum blockchain design. But the blockchain is always consisting of many nodes depending upon participants, then we require an efficient aggregate signature technique to verify nodes efficiently. We have designed a blockchain using fast post quntum secure tool called module lattices. Module lattices provide both security and efficiency based on two assumptions, (1) Module Learning With Errors, and (2) Module Short Integer Solution respectively. The proposed blockchain design ensures security of Internet of Things devices against quantum attacks. The design provides a better secure environment for Internet of Things. Blockchain technology has been used to combine fixed number of IoT nodes. This makes the communication efficient, and the aggregate signature has been used to provide the security to the given architecture. © 2024 The Author(s).

关键词： Blockchain

来源：评论

学校读者我要写书评

暂无评论

Impact of Time Resolution and Window Length on the Capture of Frequency Variations and Events

Impact of Time Resolution and Window Length on the Capture o...

引用

2024 IEEE PES Innovative Smart Grid Technologies Europe Conference, ISGT EUROPE 2024

作者： Polajžer, Boštjan Mohammadi, Younes Saremi, Amin University of Maribor Faculty of Electrical Engineering and Computer Science Maribor Slovenia Umeå University Department of Applied Physics and Electronics Umeå Sweden

ISBN: (纸本)9789531842976

Power-quality standards provide limited guidance on frequency quality for short time scales, such as less than one hour. Capturing frequency variations and events requires high time resolutions, e.g., 0.1 seconds or less, resulting in significant data storage requirements. However, power-quality monitors typically report averaged values at intervals of 10 minutes, 15 minutes, or one hour, depending on the disturbance type. To address these challenges, we propose calculating statistic indices from high-resolution data within a 15-minute or one-hour window length, thus avoiding storing high-resolution data. We apply the basic statistic indices to frequency data measured in Finland for a single day in June 2023, demonstrating their effectiveness in capturing frequency variations and two significant events during that day. © 2024 IEEE.

关键词： Time measurement

来源：评论

学校读者我要写书评

暂无评论

Ion-focused propagation of a relativistic electron beam in the self-generated plasma in atmosphere

引用

Chinese Physics B 2022年第6期31卷 334-341页

作者： Jian-Hong Hao Bi-Xi Xue Qiang Zhao Fang Zhang Jie-Qing Fan Zhi-Wei Dong School of Electrical and Electronic Engineering Department North China Electric Power UniversityBeijing 102206China Institute of Applied Physics and Computational Mathematics Beijing 100094 China

It is known that ion-focused regime(IFR)can effectively suppress expansion of a relativistic electron beam(REB).Using the particle-in-cell Monte Carlo collision(PIC-MCC)method,we numerically investigate the propagation of an REB in neutral *** results demonstrate that the beam body is charge neutralization and a stable IFR can be *** a result,the beam transverse dimensions and longitudinal velocities keep close to the initial *** also calculate the charge and current neutralization factors of the *** with envelope equations,we obtain the variations of beam envelopes,which agree well with the PIC ***,both the energy loss and instabilities of the REB may lead to a low transport efficiency during long-range *** is proved that decreasing the initial pulse length of the REB can avoid the influence of electron *** parts of REB pulses to build a long-distance IFR in advance can improve the beam quality of subsequent ***,a long-distance IFR may contribute to the implementation of long-range propagation of the REB in space environment.

关键词： ion-focused regime(IFR) charge neutralization electron avalanche relativistic electron beam(REB) particle-in-cell Monte Carlo collision(PIC-MCC)

来源：评论

学校读者我要写书评

暂无评论

Composite disturbance rejection and tracking control design for fuzzy model based systems with cyber attacks

引用

Journal of the Franklin Institute 2023年第1期360卷 403-423页

作者： Sakthivel, R. Anusuya, S. Harshavarthini, S. Kwon, O.M. Department of Applied Mathematics Bharathiar University Coimbatore641046 India Department of Mathematics School of Advanced Sciences Vellore Institute of Technology University Chennai600127 India School of Electrical Engineering Chungbuk National University Cheongju28644 Korea Republic of

This paper addresses the output tracking control problem and lumped disturbance rejections for nonlinear cyber-physical systems described by fuzzy model systems with parametric uncertainties, external disturbances and cyber attacks. Especially, to assure both the robust tracking and lumped disturbance estimation performances, an uncertainty and disturbance estimator (UDE)-based modified repetitive control (MRC) protocol is devised for the addressed control system. In detail, the impact of unpredictable factors, such as disturbances and uncertainties in the system model is robustly tackled by the UDE method with an appropriate filter. To be specific, the MRC protocol is amalgamated into the UDE technique for estimating the changes that occur in the afore-said unpredictable factors to ensure the asymptotic tracking performance of the system under study. Notably, to improve the tracking precision, the parallel distributed compensation strategy and the estimated lumped disturbance signal are incorporated into the control design. Meanwhile, the cyber attacks are depicted in this study as a stochastic variable that adheres to the Bernoulli distribution. Further, the required controller gain matrices are determined to affirm the robust asymptotic tracking performances with the aid of Lyapunov stability theory. Eventually, the method proposed in this paper is validated through the simulation results with two numerical examples, which include the continuous stirred tank reactor (CSTR) plant model. Further, the result reveals that the proposed control law provides the minimum tracking error when compared with an existing work. © 2022 The Franklin Institute

关键词： Disturbance rejection

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：