检索结果-内蒙古大学图书馆

作者： Pundir, Sumit Obaidat, Mohammad S. Wazid, Mohammad Das, Ashok Kumar Singh, Devesh Pratap Rodrigues, Joel J. P. C. Department of Computer Science and Engineering Graphic Era Deemed to be University Dehradun 248 002 India College of Computing and Informatics University of Sharjah UAE with King Abdullah II School of Information Technology The University of Jordan Amman 11942 Jordan University of Science and Technology Beijing Beijing 100083 China Center for Security Theory and Algorithmic Research International Institute of Information Technology Hyderabad 500 032 India Federal University of Piauí (UFPI) PI Teresina 64049-550 Brazil Instituto de Telecomunicações Covilhã 6201-001 Portugal

Internet of Things (IoT) is one of the fastest-growing technologies. With the deployment of massive and faster mobile networks, almost every daily-use item is connected to the Internet. IoT-enabled industrial multimedia environment is used for the collection and analysis of different types of multimedia data (i.e., images, videos, audios, etc.). This multimedia data is generated by various types of smart devices like drones, robots, smart controller, smart surveillance system which are deployed for the industrial monitoring and control. The multimedia data is generated in the enormous amount which can be considered as the big data. This data is further utilized in various types of business needs for example, chances of fire accidents in the industrial plant, overall machine health, etc., which can be predicted through the application of big data analytics. Therefore, IoT-enabled industrial multimedia environment is very helpful to the concerned authorities as they come to know the important information in advance. However, all the smart devices are connected and controlled through the Internet. It further causes severe threats to the communication happens in an IoT-enabled industrial multimedia environment. It is vulnerable to various types of attacks such as replay, man-in-the-middle, impersonation, secret information leakage, sensitive information modification, and malware injection (i.e., mirai). Therefore, it is important to prevent the communication of such an environment against the different types of possible attacks. These days, the attacks performed by botnets (i.e., malware attacks such as mirai and reaper) have drawn attention to the researchers. Under the influence of such attacks, the communication of IoT-enabled industrial multimedia environment is disrupted. Moreover, the attackers may also control the smart devices remotely and can change their functionalities. Hence, we need some robust mechanism to detect the presence of the malware attacks in such

关键词： Internet of things

来源：评论

学校读者我要写书评

暂无评论

Intrinsic ion migration-induced susceptible two-dimensional phase-transition memristor with ultralow power consumption

引用

science Bulletin 2025年

作者： Qin, Lanhao Yu, Yimeng Fang, Cheng Liu, Yujie Zhu, Kaichen Ouyang, Decai Liu, Shenghong Song, Bailing Zhou, Ruochen Lanza, Mario Hu, Wenhua Wu, Jinsong Li, Yuan Zhai, Tianyou State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Center of Hydrogen Science State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Innovation Center for Future Materials Shanghai Jiao Tong University Shanghai200240 China Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia School of Computer Science and Artificial Intelligence Wuhan University of Technology Wuhan430070 China

Two-dimensional (2D) phase-transition memristors have demonstrated transformative potential for neuromorphic computing, yet challenges like high power consumption, limited endurance, and crystal damage from external ion intercalation persist. Here, we introduce a novel 2D phase-transition memristor leveraging a paradigm-shifting mechanism by exploiting the ultrafast intrinsic Cu+ ion migration within Cu2S. This approach eliminates the need for external ion insertion, significantly reducing crystal damage and enabling exceptional cycling stability with over 400 DC cycles and 500 pulse cycles. The susceptible monoclinic-tetragonal phase-transition induced by intrinsic Cu+ migration achieves an unprecedented SET power consumption of 1 μW at 100 mV, significantly lower in currently reported phase-transition memristors. To further demonstrate the potential of intrinsic ion migration-induced (IIM) memristor, we simulated an IIM memristor crossbar array for image preprocessing in gesture recognition with a high SSIM value of 0.94, showcasing its potential for scalable neuromorphic hardware. This work establishes a new paradigm in low-power, high-performance phase-transition memristors, advancing their practical application in next-generation computing. © 2025 science China Press

关键词： Memristor Neuromorphic device Two-dimensional materials

来源：评论

学校读者我要写书评

暂无评论

Muti-Hop Task Routing in UAV-Assisted Mobile Edge Computing IoT Networks with Intelligent Reflective Surfaces

TechRxiv

引用

TechRxiv 2022年

作者： Shnaiwer, Yousef N. Kouzayha, Nour Masood, Mudassir Kaneko, Megumi Al-Naffouri, Tareq Y. Tokyo101-8430 Japan Division of Computer Electrical and Mathematical Sciences and Engineering King Abdullah University of Science and Technology Thuwal23955 Saudi Arabia Electrical Engineering Department of King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia

The cooperation between Unmanned Aerial Vehicles (UAVs) and ground Mobile Edge Computing (MEC) servers in processing tasks is becoming one of the main research trends of MEC networks. Despite the advantages of UAV-assisted MEC, it is restricted by the limited battery capacity and sensitive energy consumption of UAVs. Unlike the previous works where UAVs are allowed to either process tasks locally or offload them to ground MEC servers, in this paper, we propose a multi-hop task routing solution for Internet of Things (IoT) networks in which a UAV can also relay to another UAV with better connection to a ground MEC server. Furthermore, the UAV can make benefit of existing Intelligent Reflective Surfaces (IRSs) to further improve tasks offloading and reduce energy consumption. We show that the problem of minimizing the total energy of UAVs is NP-hard, and we propose a graph-based heuristic solution to solve it. Simulation results show that the proposed graph-based solution outperforms the traditional no-relaying scheme, especially when IRSs are deployed. Furthermore, a Convolutional Neural Network (CNN) is devised to reduce the delay of finding the decisions for the UAVs at the centralized coordinator. Simulations show that the CNN achieves very close energy consumption performance and a remarkable reduction in execution time compared to the graph-based heuristic solution. © 2022, CC BY.

关键词： Mobile edge computing

来源：评论

学校读者我要写书评

暂无评论

Contactless Technologies for Smart Cities: Big Data, IoT, and Cloud Infrastructures

引用

SN computer science 2021年第4期2卷 1-24页

作者： Manimuthu, Arunmozhi Dharshini, Venugopal Zografopoulos, Ioannis Priyan, M.K. Konstantinou, Charalambos Energy Research Institute (ERI@N) Nanyang Technological University Singapore Singapore APTECH Solutions PVT LTD Bangalore India Division of Computer Electrical and Mathematical Sciences and Engineering King Abdullah University of Science and Technology (KAUST) Thuwal 23955 Saudi Arabia Department of Computer Engineering Kyung Hee University Seoul South Korea

Intelligent systems are enhancing city environments and improving their overall performance in all possible aspects. Innovations in the field of information and communication technologies (ICT) and the proliferation of big data, internet-of-things (IoT), and cloud (BIC) infrastructures revolutionize the existing agile city ecosystems while effectively addressing customers and citizens needs. In this paper, we address the technology-driven applications that are capable of influencing the existing city infrastructures during their transformation towards smart cities with contactless technologies. We present applications, design principles, technology standards, and cost-effective techniques that leverage BIC for contactless applications and discuss user interfaces deployed in smart city environments. We further discuss state-of-the-art sensing methods and smart applications that support cities with smart contactless features. Finally, a case study is reported on how BIC can assist in efficiently handling and managing emergency situations such as the COVID-19 pandemic. © 2021, The Author(s), under exclusive licence to Springer Nature Singapore Pte Ltd.

关键词： Big data Cloud Contactless technologies COVID-19 Internet-of-things Smart city

来源：评论

学校读者我要写书评

暂无评论

Semantic Units: Organizing knowledge graphs into semantically meaningful units of representation

arXiv

引用

arXiv 2023年

作者： Vogt, Lars Kuhn, Tobias Hoehndorf, Robert TIB Leibniz Information Centre for Science and Technology Welfengarten 1B Hanover30167 Germany Department of Computer Science Vrije Universiteit Amsterdam Netherlands Computational Bioscience Research Center Computer Electrical and Mathematical Sciences & Engineering Division King Abdullah University of Science and Technology 4700 KAUST Thuwal23955 Saudi Arabia

Background: Knowledge graphs and ontologies are becoming increasingly important as technical solutions for Findable, Accessible, Interoperable, and Reusable data and metadata (FAIR Guiding Principles). We discuss four challenges that impede the use of FAIR knowledge graphs. Results: Semantic units have the potential to solve the challenges by structuring a knowledge graph into identifiable and semantically meaningful subgraphs. Each semantic unit is represented by its own resource, instantiates a corresponding semantic unit class, and can be implemented as a FAIR Digital Object and a nanopublication in RDF/OWL and property graphs. We distinguish statement and compound units as basic categories of semantic units. Statement units represent smallest, independent propositions that are semantically meaningful for a human reader. They consist of one or more triples and mathematically partition a knowledge graph. We distinguish assertional, contingent (prototypical), and universal statement units as basic types of statement units and propose representational schemes and formal semantics for them (including for absence statements, negations, and cardinality restrictions) that do not involve blank nodes and that translate back to OWL. Compound units, on the other hand, represent semantically meaningful collections of semantic units and we distinguish various types of compound units, representing different levels of representational granularity, different types of granularity trees, and different frames of reference. Conclusions: Semantic units support making statements about statements, can be used for graph-alignment, subgraph-matching, knowledge graph profiling, and for managing access restrictions to sensitive data. Organizing the graph into semantic units supports the separation of ontological, diagnostic (i.e., referential), and discursive information, and it also supports the differentiation of multiple frames of reference. © 2023, CC BY.

关键词： Graphic methods

来源：评论

学校读者我要写书评

暂无评论

Enhanced Radio-Frequency Sensors Based on a Self-Dual Emitter-Absorber

引用

Physical Review Applied 2021年第1期15卷 014026-014026页

作者： Minye Yang Zhilu Ye Mohamed Farhat Pai-Yen Chen Department of Electrical and Computer Engineering University of Illinois at Chicago Chicago Illinois 60607 United States Computer Electrical and Mathematical Science and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia

We propose and experimentally demonstrate a parity-time-symmetric electronic system exhibiting the self-dual emitter-absorber property with a remarkable modulation depth in the radio-frequency (rf) region. The dramatically different rf responses between the emitter and absorber modes may allow detection of ultrasmall conductive or reactive perturbations. Our measurement results show that even a perturbation on the order of 10−2 can greatly change the system’s output intensity by more than 30 dB, consistent with the theoretical prediction. The measured sensitivity is far beyond the sensitivity of traditional sensors based on a Fabry-Perot resonator, and may lead to monotonic rf sensors with high sensitivity and resolvability.

关键词： Noise Optical sources & detectors Optoelectronics Quantum sensing Radio frequency techniques PT-symmetry

来源：评论

学校读者我要写书评

暂无评论

Spatial variations of nutrient and trace metal concentrations in macroalgae across blue carbon habitats of the Saudi Arabian Red Sea

引用

science of the Total Environment 2024年 956卷 177197页

作者： Cai, Chunzhi Anton, Andrea Duarte, Carlos M. Agusti, Susana Ocean College Zhejiang University Zhoushan316000 China Ocean Research Center of Zhoushan Zhejiang University Zhoushan316021 China Marine Science Program Biological and Environmental Science and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia Mediterranean Institute for Advanced Studies Illes Balears Esporles07190 Spain

Macroalgae play a crucial role in blue carbon ecosystems, yet their elemental compositions in the Red Sea are not well documented. This study examined the concentrations of 22 elements in 161 macroalgae blade samples from 19 species (5 unidentified) across 3 phyla in the Saudi Arabian Red Sea. Macroalgae blades collected from coral reef habitats exhibited higher concentrations of K, As, and Sr compared to those from seagrass meadows, but had lower levels of total nitrogen (TN), Na, Mg, Al, P, S, Cr, Mn, Fe, and Zn. These differences may be attributed to the limited or absent sediment in coral reef habitats, as sediment in seagrass meadows acts as a trap for heavy metals, influencing element accumulation. In the Southern Red Sea, macroalgae blades showed lower Sr levels but higher total organic carbon (TOC), TN, P, and Cd than those in the North, a trend influenced by nutrient inflows from the Indian Ocean and the semi-enclosed structure of the Red Sea. The study found that macroalgae blades had lower mean TOC and TN content than seagrass and mangrove leaves from the same research cruises but higher levels of Al, Cr, Ni, Cu, Zn, As, Mo, Cd, and Pb. Among the surveyed red, green, and brown macroalgae blades, Halymenia sp., Caulerpa taxifolia, and Dictyota sp. had the highest TOC, TN, and P contents, while Amphiroa fragilissima, Udotea flabellum, and Padina sp. had higher trace metal contents. Notably, some macroalgae blades, including red macroalgae A. fragilissima, green macroalgae Halimeda tuna, U. flabellum, and brown macroalgae Padina pavonica, Turbinaria ornata, collected from Al Birk, Al Lith, Thuwal, Yanbu, and Al Wajh exhibited concerning levels of Cr (~10.9 mg kg−1) and Ni (~27.2 mg kg−1), surpassing toxicity thresholds. These findings emphasize the urgent need for effective pollution mitigation measures to protect these marine ecosystems. © 2024 Elsevier B.V.

关键词： Heavy metals

来源：评论

学校读者我要写书评

暂无评论

Outage Performance of Fluid Antenna System (FAS)-aided Terahertz Communication Networks

Outage Performance of Fluid Antenna System (FAS)-aided Terah...

引用

IEEE International Conference on Communications (ICC)

作者： Leila Tlebaldiyeva Sultangali Arzykulov Khaled M. Rabie Xingwang Li Galymzhan Nauryzbayev Department of Electrical and Computer Engineering School of Engineering and Digital Sciences Nazarbayev University Astana Kazakhstan CEMSE Division King Abdullah University of Science and Technology Thuwal KSA Department of Engineering Manchester Metropolitan University Manchester UK School of Physics and Electronic Information Engineering Henan Polytechnic University Jiaozuo China

Millimeter-wave networks have already been successfully rolled out in many countries and now the research direction heads toward new technologies and standards to enable Tbps rates for future sixth-generation (6G) wireless communication systems. This work studies a point-to-point terahertz (THz) communication network exploiting the concept of a fluid antenna system (FAS) over correlated alpha-mu fading channels, nicely fitting the THz communication. Furthermore, the considered system is expanded to the selection-combining-FAS (SC-FAS) and maximum-gain-combining-FAS (MGC-FAS) diversity variates at the receiver side. The proposed FAS and its diversity configuration techniques are aimed to combat the high path loss, blockages, and molecular absorption effect related to the THz band. Our contribution includes comprehensive outage probability (OP) performance analysis for the THz band given the non-diversity and diversity FAS receivers. Moreover, the derived outage probability formulas are verified via Monte Carlo simulations. Numerical results have confirmed the superior performance of the MGC-FAS scheme in terms of OP. Finally, this work justifies that a higher number of antenna ports dramatically improves the system performance, even in the presence of correlation.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Fractional-order Modified Windkessel Model of the Human Arterial Vascular System

Fractional-order Modified Windkessel Model of the Human Arte...

引用

IEEE Biomedical Circuits and Systems (BIOCAS)

作者： Mohamed A. Bahloul Yasser Aboelkassem Zehor Belkhatir Taous-Meriem Laleg-Kirati Electrical Engineering Department College of Engineering Alfaisal University Riyadh Kingdom of Saudi Arabia College of Innovation and Technology University of Michigan-Flint MI USA Michigan Institute for Data Science University of Michigan Ann Arbor MI USA Digital Health & Biomedical Engineering Group and the School of Electronics and Computer Science University of Southampton Southampton UK Computer Electrical and Mathematical Sciences and Engineering King Abdullah University of Science and Technology (KAUST) Makkah Saudi Arabia National Institute for Research in Digital Science and Technology Paris-Saclay France

This paper explores fractional-order derivatives to model the apparent arterial compliance dynamics in human vascular aging subjects. The proposed model employs fractional-order capacitor (FOC) elements that combine complex and frequency-dependence characteristics of proximal and distal arterial compliances. The FOC modeling approach accounted for both resistive and capacitive properties. The mathematical derivation has been combined into a global arterial lumped parameter representation forming a novel fractional-order modified arterial Windkessel representation. The model is then validated using aortic pressure and flow rate data acquired from human subjects at different ages. The results show that the FOC model is an accurate and flexible approach that can estimate arterial compliance dynamics and central blood pressure distribution while maintaining a low model complexity.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Facile integration of giant exchange bias in Fe5GeTe2/oxide heterostructures by atomic layer deposition

引用

Physical Review Materials 2023年第1期7卷 014008-014008页

作者： Jierui Liang Shanchuan Liang Ti Xie Andrew F. May Thomas Ersevim Qinqin Wang Hyobin Ahn Changgu Lee Xixiang Zhang Jian-Ping Wang Michael A. McGuire Min Ouyang Cheng Gong Department of Electrical and Computer Engineering and Quantum Technology Center University of Maryland College Park Maryland 20742 USA Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Department of Physics University of Maryland College Park Maryland 20742 USA SKKU Advanced Institute of Nanotechnology Sungkyunkwan University Suwon Gyeonggido 16419 Republic of Korea Department of Mechanical Engineering Sungkyunkwan University Suwon Gyeonggido 16419 Republic of Korea King Abdullah University of Science and Technology (KAUST) Physical Sciences and Engineering Division (PSE) Thuwal Saudi Arabia Department of Electrical and Computer Engineering University of Minnesota Minneapolis Minnesota 55455 USA

Exchange bias arises from the interfacial exchange coupling in ferromagnet-antiferromagnet bilayers and manifests as a horizontal shift of the magnetic hysteresis loop, constituting a critical component underpinning a broad range of magnetoresistive logic and memory devices. The facile implementation of exchange bias in van der Waals (vdW) magnets would be a key step towards practical devices for emerging vdW spintronics. Here, we report an easy approach to establishing strong exchange bias in the vdW magnet Fe5GeTe2 by a single-step process—atomic layer deposition (ALD) of oxides on Fe5GeTe2. We successfully created exchange bias of 300–1500 Oe in Fe5GeTe2/Al2O3, Fe5GeTe2/ZnO, and Fe5GeTe2/V2O5 heterostructures, at 130 K. Control experiments showed that increasing the oxidant pulse duration in each ALD cycle or utilizing the stronger oxidant O3 can enhance the exchange bias strength, revealing the key role of the ALD oxidants. Our systematic work elucidates the essential role of ALD-enabled oxidization of Fe5GeTe2 in the formation of exchange bias, and establishes ALD of oxides as a facile, controllable, and generally effective approach to creating giant exchange bias in vdW magnets, representing an integral advance towards practical vdW spintronic devices.

关键词： Exchange bias Magnetism Ferromagnets Van der Waals systems

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：