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A hybrid optimization approach for securing cloud-based e-health systems

Multimedia Tools and Applications 2025年第16期84卷 16525-16560页

作者： Altherwi, Abdulhadi Ahmad, Mohammad Tauheed Alam, Md. Moddassir Mirza, Hidayath Sultana, Nazia Pasha, Amjad Ali Sultana, Nishat Khan, Asif Irshad Alam, Md Mottahir Azim, Rezaul Department of Industrial Engineering College of Engineering and Computer Science Jazan University PO Box. 706 Jazan45142 Saudi Arabia College of Medicine King Khalid University Abha Saudi Arabia Department of Health Information Management and Technology College of Applied Medical Sciences University of Hafr Al-Batin Hafr Al-Batin Saudi Arabia Department of Electrical and Electronic Engineering College of Engineering and Computer Science Jazan University Jazan45142 Saudi Arabia Government Medical College Siddipet Ensanpalli Siddipet District Telangana502114 India Aerospace Engineering Department King Abdulaziz University Jeddah21589 Saudi Arabia Department of Business Administration Applied College Jazan University P. O. Box 706 Jazan45142 Saudi Arabia Department of Computer Science Aligarh Muslim University Uttar Pradesh Aligarh202002 India Department of Electrical and Computer Engineering Faculty of Engineering King Abdulaziz Jeddah21589 Saudi Arabia Department of Physics University of Chittagong Chattogram4331 Bangladesh

In modern healthcare, cloud-based e-health technology offers substantial benefits but faces significant security challenges. Sensitive patient data is vulnerable to cyber threats during transmission and storage, potentially enabling unethical collaboration between healthcare professionals and cloud storage providers. This paper aims to develop a robust security framework that safeguards patient privacy and prevents unauthorized access to sensitive medical information in remote patient health monitoring systems. The study presents an Artificial Hybrid Optimization with an Attribute-Based Encryption (AHO-ABE) model. The model leverages cryptographic techniques and hybrid optimization to enhance data security. Specifically, whale optimization (WO) is used for efficient key generation, while sheep flock optimization (SFO) is employed for continuous network surveillance. Experimental results demonstrate that the AHO-ABE model significantly enhances data security, outperforming existing RPM-MEC, AID, AI-HCS, and IoT-HMS approaches. The model exhibits superior resilience against unauthorized access and data breaches, achieving a 5 ms execution time, 850 kbps throughput, 0.121 mJ energy usage, and 4 s latency. Combining cryptographic techniques with hybrid optimization algorithms, the AHO-ABE model provides a robust framework for safeguarding sensitive medical information. This approach ensures the integrity and confidentiality of patient data in remote healthcare settings, offering an effective solution against high-performance cyber attacks. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

关键词： Diagnosis

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Equivariant Frames and the Impossibility of Continuous Canonicalization 41

Equivariant Frames and the Impossibility of Continuous Canon...

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41st International Conference on Machine Learning, ICML 2024

作者： Dym, Nadav Lawrence, Hannah Siegel, Jonathan W. Faculty of Mathematics Faculty of Computer Science Technion Israel Department of Electrical Engineering and Computer Science MIT MA United States Department of Mathematics Texas A&M University TX United States

Canonicalization provides an architecture-agnostic method for enforcing equivariance, with generalizations such as frame-averaging recently gaining prominence as a lightweight and flexible alternative to equivariant architectures. Recent works have found an empirical benefit to using probabilistic frames instead, which learn weighted distributions over group elements. In this work, we provide strong theoretical justification for this phenomenon: for commonly-used groups, there is no efficiently computable choice of frame that preserves continuity of the function being averaged. In other words, unweighted frame-averaging can turn a smooth, non-symmetric function into a discontinuous, symmetric function. To address this fundamental robustness problem, we formally define and construct weighted frames, which provably preserve continuity, and demonstrate their utility by constructing efficient and continuous weighted frames for the actions of SO(d), O(d), and Sn on point clouds. Copyright 2024 by the author(s)

关键词： Probability distributions

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Total Labelings of Graphs with Prescribed Weights

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Journal of Combinatorial mathematics and Combinatorial Computing 2024年 120卷 367-376页

作者： Bača, Martin Miller, Mirka Phanalasy, Oudone Ryan, Joe Semaničová-Feňovčíková, Andrea Sillasen, Anita A. Department of Applied Mathematics and Informatics Technical University Košice Slovakia School of Mathematical and Physical Sciences The University of Newcastle Australia School of Electrical Engineering and Computer Science The University of Newcastle Australia Department of Mathematics University of West Bohemia Pilsen Czech Republic Department of Informatics King's College London United Kingdom Department of Mathematics National University of Laos Vientiane Laos Department of Mathematical Sciences Aalborg University Aalborg Denmark

The total labeling of a graph G = (V, E) is a bijection from the union of the vertex set and the edge set of G to the set {1, 2, . . . , |V(G)| + |E(G)|}. The edge-weight of an edge under a total labeling is the sum of the label of the edge and the labels of the end vertices of that edge. The vertexweight of a vertex under a total labeling is the sum of the label of the vertex and the labels of all the edges incident with that vertex. A total labeling is called edge-magic or vertex-magic when all the edge-weights or all the vertex-weights are the same, respectively. When all the edge-weights or all the vertex-weights are different then a total labeling is called edge-antimagic or vertex-antimagic total, respectively. In this paper we deal with the problem of finding a total labeling of some classes of graphs that is simultaneously vertex-magic and edge-antimagic or simultaneously vertex-antimagic and edge-magic, respectively. We show several results for stars, paths and cycles. © 2024 Charles Babbage Research Centre. All rights reserved.

关键词： Edge-antimagic total labeling Edge-magic total labeling Vertex-antimagic total labeling Vertex-magic total labeling

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Sparse Network Mean Field Games: Ring Structures and Related Topologies 63

Sparse Network Mean Field Games: Ring Structures and Related...

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63rd IEEE Conference on Decision and Control, CDC 2024

作者： Caine, Peter E. Huang, Minyi McGill University Department of Electrical and Computer Engineering MontrealQC Canada Carleton University School of Mathematics and Statistics OttawaON Canada

ISBN: (纸本)9798350316339

For sequences of networks embedded in the unit cube [0,1]m, (weak) measure limits of sequences of empirical measures of vertex densities (vertexon functions) exist, and the associated (weak) measure limits of sequences of empirical measures of edge densities (graphexon functions) in [0,1]2 m exist, regardless of the sparsity or density of the limit graphs. This paper presents an extension of Graphon Mean Field Game (GMFG) theory to the vertexon-graphexon MFG setup (denoted GXMFG). Specific second order dynamics are introduced for the inter-node influence mediated by the singular part of a network graphexon measure;this is analyzed in the particular cases of a network limit ring topology and a limit rectangular lattice topology. Existence and uniqueness results are presented for the corresponding GXMFG equations. © 2024 IEEE.

关键词： Network topology

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Minimum Time Headway in Platooning Systems Under the MPF Topology for Different Wireless Communication Scenario

Minimum Time Headway in Platooning Systems Under the MPF Top...

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作者： Abolfazli, Elham Besselink, Bart Charalambous, Themistoklis Aalto University School of Electrical Engineering Department of Electrical Engineering and Automation Espoo02150 Finland University of Groningen Bernoulli Institute for Mathematics Computer Science and Artificial Intelligence Groningen Netherlands University of Cyprus School of Engineering Department of Electrical and Computer Engineering Nicosia1678 Cyprus

The multiple-predecessor following (MPF) topology is used in vehicle platoons to make it robustly string stable and reduce the minimum employable time headway. It has been demonstrated that communication imperfections such as time delays coming from wireless communications can affect string stability as well as the minimum time headway required to guarantee string stability. Specifically, it was shown that the larger the time delay, the longer the minimum time headway will be. However, by utilizing on-board vehicle sensors, such as radar, lidar and cameras, the distance and speed of nearby vehicles can be measured almost instantaneously, i.e., with almost no delay. Another effective parameter on string stability and minimum time headway is the heterogeneity of the vehicles. Due to the immense complexity of the MPF topology, string stability analysis of this topology in literature has been confined to homogeneous platoons. In this paper, we consider the case of heterogeneous platoons under the MPF topology with the use of the combination of sensors and wireless communications for receiving information. Following that, we find conditions to guarantee the internal and string stability for the heterogeneous case and propose the minimum time headway required to guarantee string stability. Finally, we provide a table, in which we propose the minimum time headway for two other wireless communication scenarios as well: (i) having no communication delay and (ii) having fully-delayed information, i.e., all information, whether it comes from the ego vehicle or its predecessors, is delayed. In addition to exploring the analysis of string stability for the vehicles with more possible connections (vehicles after the $r^{th}$ vehicle, when information from $r$ immediate vehicles is used), we study the string stability conditions (with which we aim at avoiding collisions) and find the minimum time headway for the first few vehicles (vehicle $r$ and all its predecessors). Numerical

关键词： Stability criteria

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Fast Bayesian optimization of Needle-in-a-Haystack problems using zooming memory-based initialization (ZoMBI)

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npj Computational Materials 2023年第1期9卷 1543-1555页

作者： Alexander E.Siemenn Zekun Ren Qianxiao Li Tonio Buonassisi Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMAUSA Department of Electrical and Computer Engineering Singapore-MIT Alliance for Research and TechnologySingaporeSingapore Xinterra SingaporeSingapore Department of Mathematics National University of SingaporeSingaporeSingapore Institute for Functional Intelligent Materials National University of SingaporeSingaporeSingapore

Needle-in-a-Haystack problems exist across a wide range of applications including rare disease prediction,ecological resource management,fraud detection,and material property optimization.A Needle-in-a-Haystack problem arises when there is an extreme imbalance of optimum conditions relative to the size of the ***,current state-of-the-art optimization algorithms are not designed with the capabilities to find solutions to these challenging multidimensional Needle-in-a-Haystack problems,resulting in slow convergence or pigeonholing into a local *** this paper,we present a Zooming Memory-Based Initialization algorithm,entitled ZoMBI,that builds on conventional Bayesian optimization principles to quickly and efficiently optimize Needle-in-a-Haystack problems in both less time and fewer *** ZoMBI algorithm demonstrates compute time speed-ups of 400×compared to traditional Bayesian optimization as well as efficiently discovering optima in under 100 experiments that are up to 3×more highly optimized than those discovered by similar methods.

关键词： optimization problems extreme

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A DYNAMIC BANDWIDTH TARIFF ASSESSMENT IN A DUTCH DISTRIBUTION NETWORK USING A NOVEL SCALABLE DISTRIBUTED SIMULATION FRAMEWORK 27

A DYNAMIC BANDWIDTH TARIFF ASSESSMENT IN A DUTCH DISTRIBUTIO...

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27th International Conference on Electricity Distribution, CIRED 2023

作者： van der Holst, Bart Verhoeven, Gijs Matthijssen, Edwin Vrijlandt, Mark Plug, Ruduan van der Meer, Arjen Kok, Koen Department of Electrical Engineering Eindhoven University of Technology Netherlands Department of Electrical Engineering Mathematics and Computer Science Delft University of Technology Netherlands TNO Den Haag Netherlands

ISBN: (纸本)9781839539596

Due to the increasing penetration of distributed energy resources, congestion problems are already emerging in Dutch distribution grids. The available flexibility o f assets in the built environment could have the potential to reduce congestion if prosumers are properly incentivized by distribution grid operators (DSOs). However, it is not yet clear what (combinations of) flexibility a ctivation mechanisms will be effective for congestion management in Dutch Distribution grids. To shed light on this issue, the GO-e consortium aims at performing large-scale agent-based simulations of up to 120 low-voltage networks and a large variety of possible instruments and scenarios. For this reason, we developed a novel scalable time-discrete simulation framework for distributed agent-based simulations of energy systems. We demonstrate the framework on a case-study in which we assess the effectiveness of a dynamic bandwidth tariff instrument on overloading problems in a low-voltage network containing solar panels, batteries, and heat pumps. It was shown that a dynamic bandwidth tariff can successfully resolve forecasted congestion if the associated costs are high enough compared to the day-ahead prices. However, the resulting load shifting can cause new congestion intra-day aswell. © The Institution of engineering and Technology 2023.

关键词： Traffic congestion

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Forecasting Karachi's Air Temperature Variation: Leveraging Mobile and Multimedia Dataset for Global Warming Insights

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Journal of Mobile Multimedia 2024年第6期20卷 1289-1320页

作者： Zaffar, Asma Ahmed, Shakil Rafique, Aysha Imran, Muhammad Amir, Muhammad Uddin, Vali Department of Mathematics and Sciences Sir Syed University of Engineering and Technology Karachi Pakistan Department of Computer Engineering Sir Syed University of Engineering and Technology Karachi Pakistan Department of Telecommunication Engineering Sir Syed University of Engineering and Technology Pakistan Department of Civil Engineering Sir Syed University of Engineering and Technology Karachi Pakistan Sir Syed University of Engineering and Technology Professor and Dean Computer and Electrical Engineering Karachi Pakistan Sir Syed University of Engineering and Technology Professor and Vice Chancellor Karachi Pakistan

In Karachi, the transport and building industries have a major impact on carbon dioxide (CO2) emissions and greenhouse gas emissions. This study is innovative in that it examines how air temperature changes over time ... 详细信息

In Karachi, the transport and building industries have a major impact on carbon dioxide (CO₂) emissions and greenhouse gas emissions. This study is innovative in that it examines how air temperature changes over time and forecasts the maximum and minimum temperatures in Karachi. Specifically, it looks at 60 years' worth of mean monthly maximum and minimum air temperatures in Karachi, spanning from (1961 to 2020) dataset classes. The monthly average air temperature in Karachi, both at its minimum and maximum, remains constant. Using dataset from the Pakistan Metrological department (PMD) and, the ARMA (p, q) model technique was used to assess forecasting and modelling the behavior of the maximum and minimum air temperatures in Karachi. The least values Akaike information criterion (AIC), the Bayesian Schwarz information criterion (SIC), and the Hannan Quinn information criterion (HIC) are used to describe how adequate the model is. Additionally, the Durbin-Watson (DW) test is used. The average monthly maximum and minimum air temperature in Karachi are strongly correlated, as indicated by DWvalues (<2). The lowest and maximum monthly average air temperatures in Karachi are predicted using diagnostic checking techniques such as Root Mean Squared Error (RMSE), Mean Absolute Error (MAE), Mean Absolute Percentage Error (MAPE), and Theil's U-Statistics. The results indicate that there is a strong correlation between the air temperature and previously measured values, with Theil's U-Statistics values for each month lying close to zero. This study is a great resource for observing how air temperature affects global warming. This study also highlights the the innovative aspect of utilizing vast datasets, possibly including those from mobile and multimedia sources, to address a critical environmental issue. It also emphasizes the predictive modelling aspect of your study, which is central to understanding and mitigating global warming effects. © 2025 River Publisher

关键词： air temperature ARMA (p kurtosis q) model root mean square error skewness

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Ge_(0.92)Sn_(0.08)/Ge multi-quantum-well LEDs operated at 2-μm-wavelength on a 12-inch Si substrate

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Photonics Research 2023年第10期11卷 1606-1612页

作者： SHAOTENG WU LIN ZHANG RONGQIAO WAN HAO ZHOU KWANG HONG LEE QIMIAO CHEN YI-CHIAU HUANG XIAO GONG CHUAN SENG TAN School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Applied Materials Inc.SunnyvaleCalifornia 95054USA Department of Electrical and Computer Engineering National University of SingaporeSingapore 117576Singapore

The development of an efficient group-IV light source that is compatible with the CMOS process remains a significant goal in Si-based ***,the Ge Sn alloy has been identified as a promising candidate for realizing Si-based light ***,previous research suffered from a small wafer size,limiting the throughput and *** overcome this challenge,we report the successful growth of Ge Sn/Ge multiple-quantum-well(MQW)p-i-n LEDs on a 12-inch(300-mm)Si *** the best of our knowledge,this represents the first report of semiconductor LEDs grown on such a large *** MQW LED epitaxial layer is deposited on a 12-inch(300-mm)(001)-oriented intrinsic Si substrate using commercial reduced pressure chemical vapor *** mitigate the detrimental effects of threading dislocation densities on luminescence,the Ge Sn/Ge is grown *** to the high crystal quality and more directness in the bandgap,enhanced electroluminescence(EL)integrated intensity of 27.58 times is demonstrated compared to the Ge *** MQW LEDs exhibit EL emission near 2μm over a wide operating temperature range of 300 to 450 K,indicating hightemperature *** work shows that Ge Sn/Ge MQW emitters are potential group-IV light sources for large-scale manufacturing.

关键词： quantum emitter overcome

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An optimal power supervising strategy for a smart home assessed based on BPMN Framework 21

An optimal power supervising strategy for a smart home asses...

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21st IEEE International Conference on Sciences and Techniques of Automatic Control and computer engineering, STA 2022

作者： Lanouar, Leila Rekik, Mouna Bouchaala, Olfa Krichen, Lotfi Multimédia & Web Department Tunis Tunisia Electrical Engineering Department Sfax Tunisia Department of Computer Engineering and Applied Mathematics Research Sfax Tunisia Electrical Engineering Department Sfax Tunisia

ISBN: (纸本)9781665482615

For each smart home, the need of energy consumption supervision is necessary, which plays an important role to ensure the highest power quality and to enhance the stability of the whole grid. The current document implements a smart home supply strategy based on endless resources to reduce the electricity bill and confirm the energy balance. In this context, a proposed supervision algorithm operates in eight cases to reach optimal energy flow between renewable generators, home battery and grid in a smart home concept is presented. The system is evaluated using the framework 'Business Process Model and Notation' (BPMN) Camunda basing on information stored in Firebase Cloud and results are presented in order to manifest the efficiency of this control strategy. © 2022 IEEE.

关键词： Energy utilization

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