检索结果-内蒙古大学图书馆

Hybrid Grey Wolf and Dipper Throated Optimization in Network Intrusion Detection systems

Computers, Materials & Continua 2023年第2期74卷 2695-2709页

作者： Reem Alkanhel Doaa Sami Khafaga El-Sayed M.El-kenawy Abdelaziz A.Abdelhamid Abdelhameed Ibrahim Rashid Amin Mostafa Abotaleb B.M.El-den Department of Information Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Communications and Electronics Delta Higher Institute of Engineering and TechnologyMansoura35111Egypt Department of Computer Science Faculty of Computer and Information SciencesAin Shams UniversityCairo11566Egypt Department of Computer Science College of Computing and Information TechnologyShaqra University11961Saudi Arabia Computer Engineering and Control Systems Department Faculty of EngineeringMansoura UniversityMansoura35516Egypt Department of Computer Science University of Engineering and TechnologyTaxilaPakistan Department of System Programming South Ural State UniversityChelyabinsk454080Russia

The Internet of Things(IoT)is a modern approach that enables connection with a wide variety of devices *** to the resource constraints and open nature of IoT nodes,the routing protocol for low power and lossy(RPL)networks may be vulnerable to several routing ***’s why a network intrusion detection system(NIDS)is needed to guard against routing assaults on RPL-based IoT *** imbalance between the false and valid attacks in the training set degrades the performance of machine learning employed to detect network ***,we propose in this paper a novel approach to balance the dataset classes based on metaheuristic optimization applied to locality-sensitive hashing and synthetic minority oversampling technique(LSH-SMOTE).The proposed optimization approach is based on a new hybrid between the grey wolf and dipper throated optimization *** prove the effectiveness of the proposed approach,a set of experiments were conducted to evaluate the performance of NIDS for three cases,namely,detection without dataset balancing,detection with SMOTE balancing,and detection with the proposed optimized LSHSOMTE *** results showed that the proposed approach outperforms the other approaches and could boost the detection *** addition,a statistical analysis is performed to study the significance and stability of the proposed *** conducted experiments include seven different types of attack cases in the RPL-NIDS17 *** on the 2696 CMC,2023,vol.74,no.2 proposed approach,the achieved accuracy is(98.1%),sensitivity is(97.8%),and specificity is(98.8%).

关键词： Metaheuristics grey wolf optimization dipper throated optimization dataset balancing locality sensitive hashing SMOTE

来源：评论

学校读者我要写书评

暂无评论

An Improved Hybrid Control Strategy for UAPF- based Microgrid system for Active Power Line Conditioner with Power Flow Control

An Improved Hybrid Control Strategy for UAPF- based Microgri...

引用

2023 IEEE International Conference on Power Electronics, Smart Grid, and Renewable Energy, PESGRE 2023

作者： Golla, Mallikarjuna Thangavel, S. Simon, Sishaj P Padhy, Narayana Prasad Pannala, Sanjeev Vellore Institute of Technology School of Electrical Engineering Vellore India National Institute of Technology Electrical and Electronics Engineering Puducherry India National Institute of Technology Electrical and Electronics Engineering Tiruchirapalli India Indian Institute of Technology Roorkee Department of Electrical Engineering Roorkee India Washington State University Energy System Innovation Center PullmanWA United States

ISBN: (纸本)9798350310573

This paper proposes an improved hybrid control strategy for a universal active power filter (UAPF)-based microgrid system for active power line conditioner. Conventional UAPF enhances power quality (PQ) alone and consumes more amount of power for the same. As a result, the converters utilization factor and power handling capability decrease in the system. To improve the above, the microgrid system realizes by the integration of external sources at the DC link of UAPF. For this, a hybrid control strategy is proposed to estimate the reference qualities and produce the switching signals for the desired operation. With this, the converters act as active filters for PQ enhancement, and power converters to carry out grid-feeding, grid-supporting grid-forming configurations for microgrid operations. Also, it reduces the power rating and increases the utilization of the back-to-back connected converters. Besides, the comprehensive coordination strategy between reference and load powers helps to improve the system's power handling capability. The system with the proposed control strategy is modeled in Simulink (2022b) platform and its performance is analyzed. The improved performance and effectiveness of the proposed controller in terms of PQ issues, transient time and power flow analysis are validated under various test conditions. © 2023 IEEE.

关键词： Active power filters Microgrid Power line conditioner Power Quality Renewable energy sources

来源：评论

学校读者我要写书评

暂无评论

Development of Multi Objective Approach for Validation of PID Controller for Buck Converter 1

Development of Multi Objective Approach for Validation of PI...

引用

1st International Conference on Advances in Computer Science, Electrical, Electronics, and Communication Technologies, CE2CT 2025

作者： Arun Kumar, K. Vegineni, Gopi Chand Suresh, C. Chowdari Marella, Bhagath Chandra Addanki, Sireesha Chimwal, Palak Big Data Architect India Sr.Software Engineer Enrollment and Eligibility Team India Electrical and Electronics Engineering School of Engineering and Technology Dhanalakshmi Srinivasan University Trichy Samayapuram621112 India Insights & Data Capgemini Department of Financial Services India System soft Technologies LLC India Bipin Tripathi Kumaon Institute of Technology Department of Electrical Engineering Almora Dwarahat India

ISBN: (纸本)9798331518578

Buck converters are a common converter of DCDC used for high energy conversion and power sources. These regulators are utilized in electronic gear to alter the result voltage because of changes in the heap current and information voltage. Therefore, in order to react to enquiries in real time, an efficient control system is required. In this work, an upgraded Sine Cosine Algorithm (ISCA) with proportional-integral-derivative (PID) controller is proposed for Mult objective optimization of a DC-DC buck converter. Through two distinct modifications, the limitations of the traditional SCA were therefore addressed, leading to the innovative use of nonlinear equations in conjunction with instrumental mechanisms to update the average location. By contrasting its response for frequency, response for increment, uncertainties of parametric, statistics of time-space indispensable error execution, objective capability, and resistance from aggravation with the previous methods-based PID for buck converters of DC-DC, the suggested ISCA-PID technique's robustness was evaluated. The results obtained later revealed that the suggested approach outperformed its algorithmic predecessors in terms of the DC-DC buck converter's remarkably improved transient responsiveness. © 2025 IEEE.

关键词： Buck converter

来源：评论

学校读者我要写书评

暂无评论

Quadruped Robot Simulation Using Deep Reinforcement Learning

arXiv

引用

arXiv 2025年

作者： Jadoon, Nabeel Ahmad Khan Ekpanyapong, Mongkol Department of Industrial System Engineering Asian Institute of Technology Bangkok Thailand

I present a novel reinforcement learning method to train the quadruped robot in a simulated environment. The idea of controlling quadruped robots in a dynamic environment is quite challenging and my method presents the optimum policy and training scheme with limited resources and shows considerable performance. The report uses the raisimGymTorch open-source library and proprietary software RaiSim for the simulation of ANYmal robot. My approach is centered on formulating Markov decision processes using the evaluation of the robot walking scheme while training. Resulting MDPs are solved using a proximal policy optimization algorithm used in actor-critic mode and collected thousands of state transitions with a single desktop machine. This work also presents a controller scheme trained over thousands of time steps shown in a simulated environment. This work also sets the base for early-stage researchers to deploy their favorite algorithms and configurations. © 2025, CC0.

关键词： Deep reinforcement learning

来源：评论

学校读者我要写书评

暂无评论

25%-Efficiency flexible perovskite solar cells via controllable growth of SnO_(2)

引用

iEnergy 2024年第1期3卷 39-45页

作者： Ningyu Ren Liguo Tan Minghao Li Junjie Zhou Yiran Ye Boxin Jiao Liming Ding Chenyi Yi State Key Laboratory of Power System Operation and Control Department of Electrical EngineeringTsinghua UniversityBeijing 100084China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

High power conversion efficiency(PCE)flexible perovskite solar cells(FPSCs)are highly desired power sources for aerospace crafts and flexible ***,their PCEs still lag far behind their rigid ***,we report a high PCE FPSC by controllable growth of a SnO_(2)electron transport layer through constant pH chemical bath deposition(CBD).The application of SnSO_(4)as tin source enables us to perform CBD without strong acid,which in turn makes it applicable to acid-sensitive flexible indium tin ***,a mild and controllable growth environment leads to uniform particle growth and dense SnO_(2)deposition with full coverage and reproducibility,resulting in a record PCE of up to 25.09%(certified 24.90%)for FPSCs to *** as-fabricated FPSCs exhibited high durability,maintaining over 90% of their initial PCE after 10000 bending cycles.

关键词： Flexible perovskite solar cells chemical bath deposition SnO_(2) electron transport layer

来源：评论

学校读者我要写书评

暂无评论

Revolutionizing Spatial Data Collection:The Advancements and Applications of 3D Mapping with Drone technology(Photogrammetry) 11

Revolutionizing Spatial Data Collection:The Advancements and...

引用

11th IEEE International Conference on Cloud Computing in Emerging Markets, CCEM 2023

作者： Snehith, Sirpa Sai Srikanth, Komati Anil, Nallapothula Bansod, Saurabh Singh, Shashank Pal, Prashant Kumar, Yogesh National Institute of Electronics and Information Technology Aurangabad in Electronics and System Engineering India KDK College of Engineering Maharashtra Nagpur India Electronics and Communication Engineering from the United College of Engineering & Research Uttar Pradesh Allahabad India Visual Information & Embedded Systems the department of Electronics & Electrical Communication Engineering Indian Institute of Technology Kharagpur India the Vishveshwarya Institute of Engineering and Technology UP GB Nagar India

ISBN: (纸本)9798350360059

—3D mapping using drone technology is rapidly changing the way spatial data is collected, analyzed, and applied across various industries. The technology has allowed for collecting the good-resolution, precise, and up-to-date spatial data that can be used for mapping, surveying, monitoring, and analyzing environments with greater efficiency and detail. The benefits of using 3D mapping with drone technology are numerous, including increased safety, reduced costs, and improved accuracy and speed of data collection. 3D mapping without drones is limited in coverage area. It relies on the photographer or surveyor to cover the area on foot or from a stationary position, making it difficult to capture large or inaccessible areas. It is generally less accurate than using drones. This is because it relies on manual measurements or estimates of distances and angles, which can result in a less precise representation of the environment or object being mapped. We use photogrammetry technique for spatial data collection, analysis and mapping by utilizing photographs from different angles to create a 3d model using Pix4D software. ©2023 IEEE.

关键词： Drones

来源：评论

学校读者我要写书评

暂无评论

Enhancing Network Design through Statistical Evaluation of MANET Routing Protocols

引用

Computers, Materials & Continua 2024年第7期80卷 319-339页

作者： Ibrahim Alameri Tawfik Al-Hadhrami Anjum Nazir Abdulsamad Ebrahim Yahya Atef Gharbi Faculty of Medical Sciences Jabir ibn Hayyan Medical UniversityAlkufa QuNajaf54001Iraq Computer Science Department School of Science and TechnologyNottingham Trent UniversityNottinghamNG118NSUK Department of Computing Faculty of Engineering Sciences&Technology(FEST)Hamdard UniversityKarachi74600Pakistan Department of Information Technology College of Computing and Information TechnologyNorthern Border UniversityArar91431Saudi Arabia Department of Information System College of Computing and Information TechnologyNorthern Border UniversityArar91431Saudi Arabia

This paper contributes a sophisticated statistical method for the assessment of performance in routing protocols salient Mobile Ad Hoc Network(MANET)routing protocols:Destination Sequenced Distance Vector(DSDV),Ad hoc On-Demand Distance Vector(AODV),Dynamic Source Routing(DSR),and Zone Routing Protocol(ZRP).In this paper,the evaluation will be carried out using complete sets of statistical tests such as Kruskal-Wallis,Mann-Whitney,and *** articulates a systematic evaluation of how the performance of the previous protocols varies with the number of nodes and the mobility *** study is premised upon the Quality of Service(QoS)metrics of throughput,packet delivery ratio,and end-to-end delay to gain an adequate understanding of the operational efficiency of each protocol under different network *** findings explained significant differences in the performance of different routing protocols;as a result,decisions for the selection and optimization of routing protocols can be taken effectively according to different network *** paper is a step forward in the general understanding of the routing dynamics of MANETs and contributes significantly to the strategic deployment of robust and efficient network infrastructures.

关键词： Routing protocols statistical approach friedman MANET

来源：评论

学校读者我要写书评

暂无评论

Design of a Comparator with Improved Noise, Delay Time and PSRR for a Single-Slope ADC

Design of a Comparator with Improved Noise, Delay Time and P...

引用

International Conference on Electronics, Information and Communications (ICEIC)

作者： Heon-Bin Jang Yeong-Seok Kim Jimin Cheon Department of Semiconductor System Engineering Kumoh National Institute of Technology

In this paper, we propose a comparator structure with improved noise, delay time, and power supply rejection ratio (PSRR) of a single-slope ADC used in CMOS image sensor (CIS). To improve the noise characteristics, a capacitor is inserted to reduce the bandwidth. However, the delay time and PSRR characteristics are worse. The proposed comparator uses a spilt-length transistor at the input of the comparator to improve the PSRR, and the PSRR is improved by isolating the capacitor from the power supply voltage and ground. Simulation results show that the proposed structure has improved PSRR and noise compared to the existing structures, and the delay time and layout area of the comparator are improved due to the smaller size of the capacitor. The proposed comparator is designed using a 0.18-μm CMOS process.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Neighborhood Search Based Improved Bat Algorithm for Web Service Composition

引用

Computer systems Science & engineering 2023年第5期45卷 1343-1356页

作者： Fadl Dahan Department of Information System College of Computer Engineering and SciencesPrince Sattam bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia Department of Computer Sciences Faculty of Computing and Information Technology AlturbahTaiz UniversityTaiz9674Yemen

Web services are provided as reusable software components in the services-oriented *** complicated composite services can be combined from these components to satisfy the user requirements represented as a workflow with specified Quality of Service(QoS)*** workflow consists of tasks where many services can be considered for each *** for optimal services combination and optimizing the overall QoS limitations is a Non-deterministic Polynomial(NP)-hard *** work focuses on the Web Service Composition(WSC)problem and proposes a new service composition algorithm based on the micro-bats behavior while hunting the *** proposed algorithm determines the optimal combination of the web services to satisfy the complex user *** also addresses the Bat Algorithm(BA)shortcomings,such as the tradeoff among exploration and exploitation searching mechanisms,local optima,and convergence *** proposed enhancement includes a developed cooperative and adaptive population initialization *** elitist mechanism is utilized to address the BA convergence *** tradeoff between exploration and exploitation is handled through a neighborhood search *** benchmark datasets are selected to evaluate the proposed bat algorithm’s *** simulation results are estimated using the average fitness value,the standard deviation of the fitness value,and an average of the execution time and compared with four bat-inspired *** is observed from the simulation results that introduced enhancement obtains significant results.

关键词： Cloud computing web service composition bat algorithm serviceoriented architecture

来源：评论

学校读者我要写书评

暂无评论

Development and modeling of advanced systems Na2SnBr6-based perovskite solar cells: a comprehensive study on electron transport layers

引用

Optics Express 2025年第10期33卷 21152-21172页

作者： Roy, Dipta Reza, M.D. Selim Ghosh, Avijit Roy, Anup Kumar Chowdhury, Bivash Ranjan Aktarujjaman, M.D. Alrafai, H.A. Hassan, Abeer A. Department of Electrical and Computer Engineering California State University at Northridge NorthridgeCA91330 United States Department of Electrical and Electronic Engineering Begum Rokeya University Rangpur5400 Bangladesh Phillip M. Drayer Department of Electrical and Computer Engineering Lamar University BeaumontTX77710 United States Department of Management Information System International American University Los AngelesCA90010 United States Department of Information Technology Management Webster University St. LouisMO63119 United States Department of Chemistry Faculty of Science King Khalid University PO Box 9004 Abha61413 Saudi Arabia

This study simulates a n-i-p planar heterojunction for Na2SnBr6-based perovskite solar cells (PSCs), with Na2SnBr6 as the absorber layer, fluorine-doped tin oxide (FTO) as the substrate, and In2S3, IGZO, and SnS2 as electron transport layers (ETLs). Gold (Au) is used as the back contact. Na2SnBr6 was chosen for its low cost, non-toxicity, tunable band gap, excellent electrical properties, and stability. The SCAPS-1D simulator was employed to model the solar cell performance under AM 1.5 G light irradiation, focusing on factors like doping concentration, layer thickness, defect density, and interface defects across three device configurations: Device I (Au/Na2SnBr6/ In2S3/FTO/Al), Device II (Au/ Na2SnBr6/IGZO/FTO/Al), and Device III (Au/ Na2SnBr6/SnS2/FTO/Al). Device III achieved the highest PCE of 31.35%, FF of 85.95%, VOC of 0.7926 V, and JSC of 46.01 mA/cm22, making it a promising candidate for high-efficiency, lead-free perovskite solar cells. Devices I and II showed lower efficiencies of 27.47% and 30.98%, respectively. The study also analyzed quantum efficiency (QE), carrier dynamics, and recombination rates, highlighting the potential of Device III in advancing Na2SnBr6-based hybrid perovskite solar technologies for future solar energy applications. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Semiconductor doping

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：