检索结果-内蒙古大学图书馆

Solar Conference (MENA-SC), Middle East and North Africa

作者： Fahad Alam Nazek El-Atab Electrical and Computer Engineering Computer Electrical Mathematical Science and Engineering Division King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia

The current work demonstrates 3D printing of transparent sheets embedded with zinc oxide (ZnO) nanoparticles for the encapsulation of solar panels for protection and thermal management. Thin transparent sheets were prepared via a vat-photopolymerization-based 3D printing technique. The optimized sheet showed >90% transparency with a UV ray preventing capability from the range of 200–400 nm. Due to blocking of UV rays from the solar spectrum, reduction in around ~8°C in the temperature from the surface of the solar panel was observed when the solar panel coated with ZnO embedded resin was exposed to sunlight for 30 min as compared to the surface temperature from the reference panel with resin coating only. The demonstrated sheet would thus be promising as an encapsulant and in assisting in the thermal management of the solar panel.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Joint Optimization of Positioning and Computation Offloading in Multi-UAV MEC Networks for Low Latency Applications

Joint Optimization of Positioning and Computation Offloading...

引用

IEEE Conference on Wireless Communications and Networking

作者： Yuhui Wang Junaid Farooq Hakim Ghazzai Gianluca Setti Department of Electrical and Computer Engineering University of Michigan-Dearborn Dearborn MI USA Computer Electrical and Mathematical Sciences Division King Abdullah University of Science & Technology Saudi Arabia

ISBN: (数字)9798350368369

ISBN: (纸本)9798350368376

The advent of multi-unmanned aerial vehicle (multi-UAV) networks in mobile edge computing (MEC) introduces dynamic computational topologies where UAVs, acting as mobile edge servers, are tasked with processing data from ground-based user equipment (UE). This paper addresses the dual challenges of optimizing both UAV deployment and task offloading within such networks to minimize communication latency and efficiently utilize UAV resources, which are limited by battery life and processing capabilities. We propose a bi-level optimization framework that simultaneously tackles the placement of UAVs and the distribution of computational tasks among them. At the higher level, UAV deployment is optimized to ensure minimal distance to the UEs, thereby reducing latency and energy consumption during data transmission. At the lower level, task offloading is optimized to balance the computational load across the UAV network, considering each UAV's capacity and battery constraints. We demonstrate through extensive simulations the significant improvements in system efficiency, latency, and resilience. This approach not only enhances the performance of UAV-assisted MEC networks but also provides scalable solutions adaptable to various operational scenarios.

关键词： Multi-access edge computing Simulation Autonomous aerial vehicles Batteries Topology Servers Time factors Vehicle dynamics Optimization Resilience

来源：评论

学校读者我要写书评

暂无评论

Memristors Threshold Based Physical Unclonable Function

Memristors Threshold Based Physical Unclonable Function

引用

2022 International Conference on Microelectronics, ICM 2022

作者： Al-Tamimi, Aref Ali, Shawkat Cao, Yuan Bermak, Amine College of Science and Engineering Hamad Bin Khalifa Univesty Qatar King Abdullah University of Science and Technology Department of Electrical and Computer Engineering Saudi Arabia Hohai University College of IoT China

ISBN: (纸本)9781665493246

This paper presents a novel physical unclonable function (PUF) design that extracts entropy of random threshold voltage variations of a memristor-based cell. Each cell consists of two equivalent memristors in series. Applying an increasing voltage within the threshold range across the cell causes the memristor with a lower threshold to change state before the other. This uncertainty is then digitized to produce a random output. The design has no area/power hungry CMOS comparator overhead. Instead, only an output memristor holds the PUF response bit. The PUF signature is extracted during the set process. The proposed PUF cell which consists of two filament memristor sub-models connected in series is modeled, designed, implemented, and simulated using SystemC-AMS. Simulation results show that the effect of the sneak path does not alter the PUF response. © 2022 IEEE.

关键词： Memristors

来源：评论

学校读者我要写书评

暂无评论

Expansion Planning for Renewable Integration in Power System of Regions with Very High Solar Irradiation

引用

Journal of Modern Power Systems and Clean Energy 2021年第3期9卷 485-494页

作者： Musfer Alraddadi Antonio J.Conejo Ricardo M.Lima the Department of Electrical and Computer Engineering The Ohio State UniversityColumbusOH 43210USA the Department of Integrated Systems Engineering and the Department of Electrical and Computer Engineering The Ohio State UniversityColumbusOH 43210USA King Abdullah University of Science and Technology Thuwal 23955-6900Kingdom of Saudi Arabia

In this paper,we address the long-term generation and transmission expansion planning for power systems of regions with very high solar *** target the power systems that currently rely mainly on thermal generators and that aim to adopt high shares of renewable *** propose a stochastic programming model with expansion alternatives including transmission lines,solar power plants(photovoltaic and concentrated solar),wind farms,energy storage,and flexible combined cycle gas *** model represents the longterm uncertainty to characterize the demand growth,and the short-term uncertainty to characterize daily solar,wind,and demand *** use the Saudi Arabian power system to illustrate the functioning of the proposed model for several cases with different renewable integration *** results show that a strong dependence on solar power for high shares of renewable sources requires high generation capacity and storage to meet the night demand.

关键词： Generation and transmission expansion planning uncertainty solar power wind power

来源：评论

学校读者我要写书评

暂无评论

5G-Aided RTK Positioning in GNSS-Deprived Environments

5G-Aided RTK Positioning in GNSS-Deprived Environments

引用

European Signal Processing Conference (EUSIPCO)

作者： Pinjun Zheng Xing Liu Tarig Ballal Tareq Y. Al-Naffouri Computer Electrical and Mathematical Science & Engineering King Abdullah University of Science and Technology (KAUST) Thuwal KSA

This paper considers the localization problem in a 5G-aided global navigation satellite system (GNSS) based on realtime kinematic (RTK) technique. Specifically, the user's position is estimated based on the hybrid measurements, including GNSS pseudo-ranges, GNSS carrier phases, 5G angle-of-departures, and 5G channel delays. The underlying estimation problem is solved by steps that comprise obtaining the float solution, ambiguity resolution, and resolving the fixed solution. The analysis results show that the involvement of 5G observations can enable localization under satellite-deprived environments, inclusive of extreme cases with only 2 or 3 visible satellites. Moreover, extensive simulation results reveal that with the help of 5G observations, the proposed algorithm can significantly reduce the estimation error of the user's position and increase the success rate of carrier-phase ambiguity resolution.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Differentially Private 1-norm Linear Regression with Heavy-tailed Data

Differentially Private 1-norm Linear Regression with Heavy-t...

引用

2022 IEEE International Symposium on Information Theory, ISIT 2022

作者： Wang, Di Xu, Jinhui King Abdullah University of Science and Technology Division of Computer Electrical and Mathematical Sciences and Engineering Thuwal Saudi Arabia State University of New York at Buffalo Department of Computer Science and Engineering BuffaloNY United States

ISBN: (纸本)9781665421591

We study the problem of Differentially Private Stochastic Convex Optimization (DP-SCO) with heavy-tailed data. Specifically, we focus on the 1-norm linear regression in the ϵ-DP model. While most of the previous work focuses on the case where the loss function is Lipschitz, here we only need to assume the variates has bounded moments. Firstly, we study the case where the 2 norm of data has bounded second order moment. We propose an algorithm which is based on the exponential mechanism and show that it is possible to achieve an upper bound of Õ (√ d/nϵ) (with high probability). Next, we relax the assumption to bounded θ-th order moment with some θ ∈ (1,2) and show that it is possible to achieve an upper bound of Õ (√td/nϵ) θ - 1 θ). Our algorithms can also be extended to more relaxed cases where only each coordinate of the data has bounded moments, and we can get an upper bound of Õ (√ d/nϵ) and Õ (d({nϵ) θ - 1 θ) in the second and θ-th moment case respectively. © 2022 IEEE.

关键词： Convex optimization

来源：评论

学校读者我要写书评

暂无评论

Negative PO3-implanted bionic ion transport channels for promoting Li-S battery

引用

science China Chemistry 2025年

作者： Wenhuan Huang Shun Wang Xuehan Hou Yanan Zhang Xingxing Zhang Yaoxiao Zhao Xilang Jin Huabin Zhang Fei Wang Jian Zhang Key Laboratory of Chemical Additives for China National Light Industry College of Chemistry and Chemical EngineeringShaanxi University of Science and Technology School of Materials and Chemical Engineering Xi'an Technological University Chemistry Program Physical Science and Engineering Division King Abdullah University of Science and Technology State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences

Lithium-sulfur （Li-S） battery,as a promising next-generation high-energy-density battery,suffers from lithium polysulfides（LPSs） shuttle and Li dendrites *** crystalline framework-based membranes as separator can effectively absorb and restrain LPSs but without precise structural design principal exploration and mechanism ***,bio-inspired 1D oriented lithium-ion transport channels with molecular negatively charged PO3（-1） have been developed in hybrid tetrazole frameworks for promoting the transmission of Li+*** theoretical calculations and in situ spectroscopy demonstrated the higher binding energy and inhibited diffusion of LPSs in *** assembled PP@PO3Janus separator in Li-S coin cell delivered a high initial capacity of 1410.9 mAh g-1at 0.1 C and a low attenuation rate of 0.038%per cycle over 500 cycles at 5 ***,the high capacities of 862,542 and 409 mAh g-1based on high-sulfur-loading cathodes of 2.6,3.8 and 5.0 mg cm-2at0.5 C were achieved,***,the punch battery of PO3@PP separator with S-cathode of 1.2 mg cm-2has been developed for demonstrating its potentials commercial application,which displays impressive capacity of 873.4 mAh g-1with the retention of～78.9%over 50 cycles.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Data-driven Broadband Achromatic Metalens via First-principle End-to-end Inverse Design

Data-driven Broadband Achromatic Metalens via First-principl...

引用

Conference on Lasers and Electro-Optics (CLEO)

作者： Qizhou Wang Qiang Fu Maksim Makarenko Arturo Burguete Lopez Wolfgang Heidrich Andrea Fratalocchi Computer Electrical and Mathematical Science & Engineering King Abdullah University of Science and Technology Thuwal Saudi Arabia

We present a first-principle end-to-end design framework for metalens corrected at 20 equispaced frequencies in the visible range (380 ~ 700 nm), with a record-value of image reconstruction error of 1.1 × 10 − 5.

ISBN: (纸本)9781957171258

关键词： Finite difference time domain Fresnel lenses Image reconstruction Modulation transfer function Neural networks Point spread function

来源：评论

学校读者我要写书评

暂无评论

Tutorial on laser-based visible light communications[Invited]

引用

Chinese Optics Letters 2024年第9期22卷 126-136页

作者： Yuqi Hou Yue Wang Zengxin Li Meixin Liu Shulan Yi Xiaoqian Wang Liang Xia Guangyi Liu Jianyang Shi Ziwei Li Junwen Zhang Nan Chi Tien Khee Ng Boon S.Ooi Chao Shen Key Laboratory for Information Science of Electromagnetic Waves Ministry of EducationSchool of Information Science and TechnologyFudan UniversityShanghai 200433China ZGC Institute of Ubiquitous-X Innovation and Applications Beijing 100876China Photonics Laboratory Electrical and Computer EngineeringDivision of ComputerElectrical and Mathematical Sciences and EngineeringKing Abdullah University of Science and TechnologyThuwal 23955-6900Saudi Arabia China Mobile Research Institute Beijing 100876China

Facing escalating demands for high-speed,large-bandwidth,and low-latency wireless data links,laser communication technology has emerged as a promising *** free-space optical communication conventionally utilizes nearinfrared light sources,there has been growing interest in exploring new spectral resources,including visible ***,laser-based white light has been demonstrated in visible light communication(VLC),with a unique capability to seamlessly integrate with illumination and display *** review summarizes the key devices and system technologies in semiconductor-laser-based white light for VLC-related *** recent advances and many emerging applications in the evolution of lighting,display,and communication are discussed.

关键词： visible light communication LiFi laser lighting GaN laser semiconductor laser

来源：评论

学校读者我要写书评

暂无评论

Practical Implementation of Electric Vehicle Integration into a Microgrid using V2G and G2V

Practical Implementation of Electric Vehicle Integration int...

引用

Smart Mobility (SM), IEEE International Conference on

作者： Zia Ullah Muhammed Zeeshan Shehab Ahmed Computer Electrical and Mathematical Sciences and Engineering King Abdullah University of Science and Technology Thuwal KSA

Vehicle-to-Grid (V2G) is an emerging technology that makes electric vehicles (EVs) an even more beneficial investment by using EVs as a mobile power grid. The integration of EVs with the microgrid requires several steps that include communication with the infrastructure (V2X) and bidirectional power electronic converters to exchange power with the grid. In this study, a complete structure of the EVs integration into the microgrid is demonstrated and implemented. Both V2G and G2V technologies using the integrated onboard bidirectional charger (IOBC) are performed to take and supply power to the grid. A mechanism of the available surplus power to the microgrid by several EVs is proposed. A detailed analysis of power management has been conducted by prioritizing renewable energy (EVs' power) in peak hours. The analysis is performed using a Typhoon-HIL microgrid testbed. Furthermore, the results are also verified by conducting experiments using a grid emulator.

关键词： Vehicle-to-grid Renewable energy sources Tropical cyclones Power system management Microgrids Real-time systems Power electronics

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：