检索结果-内蒙古大学图书馆

14th International Conference on Information Science and Technology, ICIST 2024

作者： Zhang, Qianqian Gao, Jie Han, Guojie Hu, Xin Yantai Yuhuangding Hospital Qingdao University Department of Radiology Yantai China Yantai Yuhuangding Hospital Qingdao University Department of Hepatobiliary and Pancreatic and Spleen Surgery Yantai China School of Hydraulic Engineering Ludong University Yantai China School of Mathematics and Statistics Science Ludong University Yantai China

ISBN: (纸本)9798350353334

This paper discusses the separate observer-based estimation and control for unmanned autonomous vehicles with disturbances and faults under input saturation effects. A trajectory tracking control scheme is designed with integrating the separate observers. The disturbance observer online estimates and compensates for time-varying uncertain disturbances. The actuator fault observer enables online estimation and compen-sation of actuator faults. An auxiliary dynamic filter is used to attenuate the adverse effects of control saturation. The Lyapunov stability theory demonstrates that all the signals of the closed-loop system are global uniformly ultimately bounded. Illustrations show the effectiveness of this scheme. © 2024 IEEE.

关键词： disturbance observer fault observer input saturation tracking control Unmanned Vehicle

来源：评论

学校读者我要写书评

暂无评论

Artificial intelligent approach for flow stability in Eyring Powell hybrid nanofluids via porous shrinking sheets

引用

Journal of Molecular Liquids 2025年 422卷

作者： Fatima, Nahid Kouki, Marouan Khan, Muhammad Imran Amjad, Arslan Bin Asghar, Zaheer Zeeshan, Ahmad Ijaz, Nouman Department of Mathematics and Sciences Prince Sultan University Riyadh11586 Saudi Arabia Department of Information System Faculty of Computing and Information Technology Northern Border University Rafha Saudi Arabia Department of Mathematics and Statistics International Islamic University Islamabad 44000 Pakistan Centre for Mathematical Sciences Pakistan Institute of Engineering and Applied Sciences Nilore Islamabad45650 Pakistan Department of Physics and Applied Mathematics Pakistan Institute of Engineering and Applied Sciences Nilore Islamabad45650 Pakistan Department of Mathematics College of Science Korea University 145 Anam-ro Seongbuk-gu Seoul02841 Korea Republic of Department of Mathematics and Statistics Punjab Group of Colleges G.T. Road Jada Jhelum49600 Pakistan

This study aims to analyze flow stability using a computational intelligence technique that integrates a Levenberg-Marquardt approach utilizing artificial intelligence implemented through a backpropagation neural network. AI-based LMS-BPNN approach is utilized to examine the flow behavior of Eyring Powell hybrid nanofluid over a porous shrinking sheet. By applying skillful transformations, a set of ordinary differential equations is obtained from the partial differential equations that describe the hybrid nanofluid. Scenarios 1–5 illustrate how the built-in MATLAB function, bvp4c, solves ordinary differential equations systems by carefully modifying input parameters to get the initial or reference solution. The numerical data was split into three groups: 10 % for testing, 10 % for validation, and 80 % for training. The LMS-BPNN was used to find approximate solutions for these scenarios. To verify the effectiveness and reliability of LMS-BPNN, we employed regression analysis, error metrics, and correlation index (R)-based fitness curves. In each scenario, the temperature and velocity profiles gradually approached the boundary conditions as expected. The flow performance outcomes for the dual solution (Cfx and Nux) are also analyzed using the LMS-BPNN method. The perturbation scheme is applied to the boundary layer problem to obtain the eigenvalues problem. The unsteady solution f(η,τ) converges to steady solution fo(η) for τ→∞ when γ≥0. However, an unsteady solution f(η,τ) diverges to a steady solution fo(η) for τ→∞ when γ © 2025 Elsevier B.V.

关键词： Eigenvalues and eigenfunctions

来源：评论

学校读者我要写书评

暂无评论

Dielectrophoretic force characteristics toward Lactobacillus casei on an oblique-patterned electrode 10

Dielectrophoretic force characteristics toward Lactobacillus...

引用

10th Asian Physics Symposium 2023, APS 2023

作者： Khazanna Fitriyani, S. Safitri, R. Lahna, K. Yusibani, E. Irwansyah Iswardy, E. Master Program in Physics Department of Physics Faculty of Mathematics and Natural Sciences Universitas Syiah Kuala Banda Aceh23111 Indonesia Department of Dental Materials Faculty of Dentistry Universitas Syiah Kuala Banda Aceh23111 Indonesia Department of Physics Faculty of Mathematics and Natural Sciences Universitas Syiah Kuala Banda Aceh23111 Indonesia Department of Mechanical Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh23111 Indonesia Research Center Universitas Syiah Kuala Banda Aceh23111 Indonesia

Dielectrophoresis-based biochips with various microelectrode configurations have been extensively studied within the last five deca des. However, wide-field application is still challenging. This study aims to fabricate an oblique-configuration microelectrode and then utilizes it to determine the dielectrophoretic (DEP) characteristics of Lactobacillus casei based on the generated non-uniform electric field. The electric field distribution on microelectrodes was simulated with Quickfield 6.6 student version. The microelectrodes were fabricated using a copper film on a glass substrate. The DEP characteristic of Lactobacillus casei was investigated by applying a sinusoidal AC signal to microelectrodes in medium solution with an electrical conductivity of 0.05 S/m. The electric-field simulations show that the strongest electric-field was generated on the tip of electrodes spacing, and the weakest electric-field was generated on the inner of electrodes spacing. The negative-DEP force on Lactobacillus casei was observed at the frequency of 60-130 kHz, while the positive-DEP force was observed at the frequency of 380-700 kHz, both at voltage of 2-6 Vpp. The nDEP force led Lactobacillus casei to be pushed toward the weak electric field on the inner of electrodes spacing, and the pDEP force induced Lactobacillus casei to be attracted toward the strong electric-field on the tip of electrodes spacing. This study implies that the proposed oblique-microelectrode platform has promising application for bioparticles separation. © Published under licence by IOP Publishing Ltd.

关键词： Microelectrodes

来源：评论

学校读者我要写书评

暂无评论

Numerical Study of Computer Virus Reaction Diffusion Epidemic Model

引用

Computers, Materials & Continua 2021年第3期66卷 3183-3194页

作者： Umbreen Fatima Dumitru Baleanu Nauman Ahmed Shumaila Azam Ali Raza Muhammad Rafiq Muhammad Aziz-ur Rehman Department of Computer Science The University of LahoreLahorePakistan Department of Mathematics Cankaya UniversityAnkaraTurkey Institute of Space Sciences Magurele-BucharestRomania Department of Medical Research China Medical University HospitalChina Medical UniversityTaichungTaiwan Department of Mathematics and Statistics The University of LahoreLahorePakistan Department of Mathematics National College of Business Administration and Economics LahoreLahorePakistan Faculty of Engineering University of Central PunjabLahorePakistan Department of Mathematics University of Management and TechnologyLahorePakistan

Reaction–diffusion systems are mathematical models which link to several physical *** most common is the change in space and time of the meditation of one or more ***–diffusion modeling is a substantial role in the modeling of computer propagation like infectious *** investigated the transmission dynamics of the computer virus in which connected to each other through network *** current study devoted to the structure-preserving analysis of the computer propagation *** manuscript is devoted to finding the numerical investigation of the reaction–diffusion computer virus epidemic model with the help of a reliable *** designed technique is finite difference scheme which sustains the important physical behavior of continuous model like the positivity of the dependent variables,the stability of the *** theoretical analysis of the proposed method like the positivity of the approximation,stability,and consistency is discussed in detail.A numerical example of simulations yields the authentication of the theoretical results of the designed technique.

关键词： Computer virus dynamics reaction-diffusion system positive solution simulations

来源：评论

学校读者我要写书评

暂无评论

Impact of non-uniform heat flux, Arrhenius activation energy on gyrotactic microorganisms in conducting a nanofluid flow

引用

International Journal of Ambient Energy 2024年第1期45卷

作者： Bhaskar, Kajal Sharma, Kalpna Bhaskar, Khushbu Chamkha, Ali J. Department of Mathematics & Statistics Manipal University Jaipur Jaipur India Department of Mathematics S. S. Jain Subodh P.G. College Jaipur India Faculty of Engineering Kuwait College of Science and Technology Doha District Kuwait

The primitive focus of this article is to examine the consequences of unsteady electrically conducting non-Newtonian magnetised tangent hyperbolic hybrid nanofluid flow which slides along the extensible surface with a porous medium along with Darcy–Forchheimer in a flow. Here we have taken into account the thermophoresis and Brownian movement for single- and multi-wall CNT dispersed in water. The temperature profile is accompanied by non-linear heat flux and viscous dissipation. The aftermath of activation energy on the concentration and the flow of gyrotactic microorganisms are taken into consideration. Differential equations after introducing various parameters are converted into ODE with the help of similarity transformations, which are later on, are solved using the bvp4c solver in the MATLAB software. For the range (Formula presented.) there is an upsurge in the picture profiles of concentration and temperature obtained. However, the velocity of the flow gets diminished when the range of MHD and porosity parameter is confined between (Formula presented.). © 2024 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Non Newtonian flow

来源：评论

学校读者我要写书评

暂无评论

Rician Channel Modelling for Super Wideband MIMO Communications

Rician Channel Modelling for Super Wideband MIMO Communicati...

引用

2025 IEEE Wireless Communications and Networking Conference, WCNC 2025

作者： Smith, Peter J. Bandara, Sachitha C. Khordad, Erfan Evans, Robin Senanayake, Rajitha University of Melbourne Department of Electrical and Electronic Engineering Melbourne Australia School of Mathematics and Statistics Victoria University of Wellington Wellington New Zealand

ISBN: (纸本)9798350368369

Recent developments in Multiple-Input-Multiple-Output (MIMO) technology include packing a large number of antenna elements in a compact array to access the bandwidth benefits provided by higher mutual coupling (MC). The resulting super-wideband (SW) systems require a circuit-theoretic framework to handle the MC and channel models which span extremely large bands. Hence, in this paper, we make two key contributions. First, we develop a physically-consistent Rician channel model for use with SW systems. Secondly, we express the circuit-theoretic models in terms of a standard MIMO model, so that insights into the effects of antenna layouts, MC, and bandwidth can be made using standard communication theory. For example, we show the bandwidth widening resulting from the new channel model. In addition, we show that MC distorts line-of-sight paths which has beamforming implications. We also highlight the interaction between spatial correlation and MC and show that tight coupling reduces spatial correlations at low frequencies. © 2025 IEEE.

关键词： Electric network parameters

来源：评论

学校读者我要写书评

暂无评论

Multiscale steady discrete unified gas kinetic scheme with macroscopic coarse mesh acceleration using preconditioned Krylov subspace method for multigroup neutron Boltzmann transport equation

引用

Physical Review E 2023年第4期107卷 045304-045304页

作者： Xiafeng Zhou Zhaoli Guo Department of Nuclear Engineering and Technology School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 China Institute of Interdisciplinary Research for Mathematics and Applied Science School of Mathematics and Statistics Huazhong University of Science and Technology Wuhan 430074 China

A multiscale steady discrete unified gas kinetic scheme with macroscopic coarse mesh acceleration [accelerated steady discrete unified gas kinetic scheme (SDUGKS)] is proposed to improve the convergence of the original SDUGKS for an optically thick system in solving the multigroup neutron Boltzmann transport equation (NBTE) to analyze the distribution of fission energy in the reactor core. In the accelerated SDUGKS, by solving the coarse mesh macroscopic governing equations (MGEs) derived from the moment equations of the NBTE, the numerical solutions of the NBTE on fine meshes at the mesoscopic level can be rapidly obtained from the prolongation of the coarse mesh solutions of the MGE. Furthermore, the use of the coarse mesh can greatly reduce the computational variables and improve the computational efficiency of the MGE. The biconjugate gradient stabilized Krylov subspace method with the modified incomplete LU preconditioner and the lower-upper symmetric-Gauss-Seidel sweeping method are implemented to solve the discrete systems of the macroscopic coarse mesh acceleration model and mesoscopic SDUGKS to further improve the numerical efficiency. Numerical solutions validate good numerical accuracy and high acceleration efficiency of the proposed accelerated SDUGKS for the complicated multiscale neutron transport problems.

关键词： Kinetic theory

来源：评论

学校读者我要写书评

暂无评论

On the Robustness of Cross-Concentrated Sampling for Matrix Completion

On the Robustness of Cross-Concentrated Sampling for Matrix ...

引用

Annual Conference on Information Sciences and Systems (CISS)

作者： HanQin Cai Longxiu Huang Chandra Kundu Bowen Su Department of Statistics and Data Science Department of Computer Science University of Central Florida Orlando FL USA Department of Computational Mathematics Science and Engineering Department of Mathematics Michigan State University East Lansing MI USA Department of Statistics and Data Science University of Central Florida Orlando FL USA Department of Mathematics Michigan State University East Lansing MI USA

Matrix completion is one of the crucial tools in modern data science research. Recently, a novel sampling model for matrix completion coined cross-concentrated sampling (CCS) has caught much attention. However, the robustness of the CCS model against sparse outliers remains unclear in the existing studies. In this paper, we aim to answer this question by exploring a novel Robust CCS Completion problem. A highly efficient non-convex iterative algorithm, dubbed Robust CUR Completion (RCURC), is proposed. The empirical performance of the proposed algorithm, in terms of both efficiency and robustness, is verified in synthetic and real datasets.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Next-Gen Smart Vehicle Number Plate Recognition with Dynamic Character Encoding for Lightning-Fast and Accurate Detection 4

Next-Gen Smart Vehicle Number Plate Recognition with Dynamic...

引用

4th International Conference on Ubiquitous Computing and Intelligent Information Systems, ICUIS 2024

作者： Panem, Gandhi Prakash Begum, M. Amina Maranan, Ramya Gaur, Ankita Yadav, Ajay Singh Dubey, Alok India Sri Venkateswaraa College of Technology Department of Ece Chennai India Saveetha School of Engineering Simats Department of Research and Innovation Tamil Nadu Chennai602105 India Manav Rachna University Department of Sciences Program Mathematics Haryana Faridabad121004 India Srm Institute of Science and Technology Department of Mathematics Delhi-NCR Campus U.P Ghaziabad India College of Dentistry Jazan University Department of Preventive Dental Sciences Jazan Saudi Arabia

ISBN: (纸本)9798331529635

This research explores the application of deep learning techniques, specifically Convolutional Neural Networks (CNNs) and Recurrent Neural Networks (RNNs with LSTM), for robust Automatic Number Plate Recognition (ANPR) in real-world scenarios. The system effectively detects and recognizes license plates from images captured in real-world environments. By treating the character string recognition as a sequence labeling problem, the system achieves a high success rate of 97%. This research demonstrates the significant potential of deep learning in enhancing the accuracy and reliability of ANPR systems, enabling applications in intelligent transportation systems, traffic management, and law enforcement. © 2024 IEEE.

关键词： Convolutional neural networks

来源：评论

学校读者我要写书评

暂无评论

Assessment of typhoon storm surge disaster scale based on expansion model

引用

Journal of Oceanology and Limnology 2023年第2期41卷 518-531页

作者： Guilin LIU Xiuxiu NONG Yi KOU Fang WU Daniel ZHAO Zongbing YU College of Engineering Ocean University of ChinaQingdao 266100China Dornsife College University of Southern CaliforniaLos Angeles CA 90089USA Statistics and Applied Probability University of California Santa BarbaraSanta Barbara CA 93106USA Department of Mathematics Harvard UniversityCambridge MA 02138USA State Key Laboratory of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China

The South China Sea suffers strongly from the typhoon storm surge disasters in China,and its northern coastal areas are facing severe ***,it is necessary and urgent to establish an assessment system for rating typhoon storm surge *** constructed an effective and reliable rating assessment system for typhoon storm surge disaster based on the theories of over-threshold,distribution function family,and composite extreme *** over-threshold sample was used as the basis of data analysis,the composite extreme value expansion model was used to derive the design water increment,and then the disaster level was delineated based on the return period *** results of the extreme value model comparison show that the Weibull-Pareto distribution is more suitable than the classical extreme value distribution for fitting the over-threshold *** results of the return period projection are relatively stable based on different analysis *** the 10 typhoon storm surges as examples,they caused landfall in the Guangdong area in the past 10 *** results of the assessment ranking indicate that the risk levels based on the return period levels obtained from different distributions are generally *** classifying low-risk areas,the classification criteria of the State Oceanic Administration,China(SOA,2012)are more *** the high-risk areas,the results of the assessment ranking based on return period are more consistent with those of the SOA.

关键词： risk classification South China Sea typhoon storm surge extreme value expansion over threshold sampling

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：