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17th International Conference on Computer Supported Education, CSEDU 2025

作者： Heiden, Wolfgang Saitova, Veronika Kless, Tea Wegner, Valeska Rötter, David Neteler, Thomas Institute of Visual Computing Bonn-Rhein-Sieg University of Applied Sciences Sankt Augustin Germany Department of Mathematics Justus-Liebig-Universität Gießen Gießen Germany

ISBN: (纸本)9789897587467

Generative AI can considerably speed up the process of producing narrative content including different media. This may be particularly helpful for the generation of modular variations on narrative themes in hypermedia, crossmedia, or transmedia contexts, thereby enabling personalized access to the content by heterogenous target groups. We present an example where GenAI has been applied for image creation and translation of a text to multiple languages for a crossmedia edutainment project transferring IT security knowledge to vulnerable groups. GenAI still seems inadequate to produce interesting narrative text integrating dedicated educational content. AI-generated illustrations often require manual rework. However, LLM support in multilingual translations displays more intelligent solutions than expected, including the implementation of a password generation process from a narrated description. Copyright © 2025 by SCITEPRESS - Science and Technology Publications, Lda.

关键词： Hypermedia systems

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A module lattice based construction of post quantum blockchain for secure transactions in Internet of Things

A module lattice based construction of post quantum blockcha...

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International Conference on Artificial Intelligence, Blockchain, computing and Security, ICABCS 2023

作者： Chaudhary, Dharminder Durgarao, M.S.P. Gupta, Pratik Rana, Saurabh Singh, Soumyendra Department of Computer Science and Engineering Amrita School of Computing Amrita Vishwa Vidyapeetham Chennai India Department of Applied Mathematics School of Vocational Studies and Applied Sciences Gautam Buddha University Greater Noida India Department of Mathematics Bennet University Greater Noida India Department of Mathematics Amrita School of Engineering Amrita Vishwa Vidyapeetham Chennai India

ISBN: (纸本)9781032669663

The Fiat-Shamir with Aborts paradigm of Lyubashevsky introduced efficient lattice based signatures. We have used lattice based signature to design post quantum blockchain design. But the blockchain is always consisting of many nodes depending upon participants, then we require an efficient aggregate signature technique to verify nodes efficiently. We have designed a blockchain using fast post quntum secure tool called module lattices. Module lattices provide both security and efficiency based on two assumptions, (1) Module Learning With Errors, and (2) Module Short Integer Solution respectively. The proposed blockchain design ensures security of Internet of Things devices against quantum attacks. The design provides a better secure environment for Internet of Things. Blockchain technology has been used to combine fixed number of IoT nodes. This makes the communication efficient, and the aggregate signature has been used to provide the security to the given architecture. © 2024 The Author(s).

关键词： Blockchain

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Development of Vision Screening Tool in Virtual Reality: A Usability Assessment Study 10

Development of Vision Screening Tool in Virtual Reality: A U...

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10th E-Health and Bioengineering Conference, EHB 2022

作者： Ali, Qasim Dæhlen, Are Heldal, Ilona Helgesen, Carsten Gunnar Department of Computing Mathematics and Physics Western Norway University of Applied Sciences Bergen Norway

ISBN: (纸本)9781665485579

In recent years, rapid advancements in technologies have opened new paradigms for vision screening and vision therapy by incorporating serious games (SGs) and eye trackers (ETs). The head-mounted display (HMD) with built-in ET makes it possible for researchers to study novel approaches for interaction and gaze movements in a 3-dimensional (3D) virtual world. While there are validated vision screening applications on desktop computers, these are limited by the size of the screen. Several spatial functional vision problems cannot be identified only using a laptop surfaces. In this study, we propose a vision screening application for VR devices with ET. The developed SG tasks for vision screening in VR are inspired by a vision screening application on laptops. The data of ET is stored in the database, and finally, the replays of tasks are prepared and displayed in VR. The usability of this solution was evaluated by seven participants using a user experience questionnaire (UEQ), observations and interviews. The results indicate the attractiveness of the VR application compared to laptop screens. However, further studies are needed to determine the validity of VR-based screening instruments. © 2022 IEEE.

关键词： Eye tracking

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Nehari manifold and fibering map approach for fractional p(.)-Laplacian Schrödinger system

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SeMA Journal 2024年第4期81卷 729-751页

作者： El-Houari, Hamza Chadli, Lalla Saadia Hicham, Moussa Faculty of Sciences and Techniques Béni Mellal Research Laboratory “Applied Mathematics and Scientific Computing” University Sultan Moulay Slimane Campus Mghilla BP 523 Béni Mellal 23000 Morocco

In this paper we extended the results of Biswas & Tiwari named Nehari manifold approach for fractional p(· ) -Laplacian system involving concave-convex nonlinearities (2020). We study the existence and multiplicity of solutions to the fractional Schrödinger problem system with Dirichlet boundary condition by using the Nehari manifold approach. The nonlinearities is not satisfied Ambrosetti–Rabinowitz condition, monotonocity or convexity conditions, and can be discontinuous in nature. © 2023, The Author(s), under exclusive licence to Sociedad Española de Matemática Aplicada.

关键词： 35J20 35J60 35S15 46E35 58E30 Fibering map approach Fractional p(.)-Laplacian operator Nehari manifold Schrödinger problems

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256 Metaverse Records Dataset 24

256 Metaverse Records Dataset

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32nd ACM International Conference on Multimedia, MM 2024

作者： Steinert, Patrick Wagenpfeil, Stefan Frommholz, Ingo Hemmje, Matthias L. Faculty of Mathematics and Computer Science University of Hagen Hagen Germany Faculty of Business Computing and Software Engineering Pfh University of Applied Sciences Göttingen Germany School of Mathematics and Computer Science University of Wolverhampton Wolverhampton United Kingdom

ISBN: (纸本)9798400706868

The metaverse is a developing field that crosses several areas of multimedia research. In this paper, we introduce the 256-MetaverseRecords dataset, a novel and extensive collection of annotated screen recordings in the form of videos from various virtual worlds of the metaverse. We describe the process of creating the dataset, the quality criteria for the annotations, and the exploration of the dataset. We also show four experiments to evaluate the performance of different feature extraction methods for Metaverse Recordings (MVRs): MVR segmentation, audio event detection, and object and interaction detection based on this dataset. Our results demonstrate that existing methods have limitations and leave challenges in dealing with the diversity and complexity of metaverse data, and that more research is needed to develop metaverse-specific techniques. Our dataset can serve as a valuable resource for the research community and foster the development of new applications and solutions for the metaverse. © 2024 Owner/Author.

关键词： dataset

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Extremum-Preserving Correction of the Nine-Point Scheme for Diffusion Equation on Distorted Meshes

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Advances in applied mathematics and Mechanics 2023年第2期15卷 402-427页

作者： Wang Kong Zhenying Hong Guangwei Yuan Zhiqiang Sheng Department of Mathematics Nanjing University of Aeronautics and AstronauticsNanjingJiangsu 211106China Key Laboratory of Mathematical Modelling and High Performance Computing of Air Vehicles(NUAA) MIITNanjingJiangsu 211106China Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsBeijing 100088China HEDPS Center for Applied Physics and TechnologyPeking UniversityBeijing 100871China

In this paper,we construct a new cell-centered nonlinear finite volume scheme that preserves the extremum principle for heterogeneous anisotropic diffusion equation on distorted *** introduce a new nonlinear approach to construct the conservative flux,that is,a linear second order flux is firstly given and a nonlinear conservative flux is then constructed by using an adaptive method and a nonlinear weighted *** new scheme does not need to use the convex combination of the cell-center unknowns to approximate the auxiliary unknowns,so it can deal with the problem with general discontinuous *** results show that our new scheme performs more robust than some existing schemes on highly distorted meshes.

关键词： Extremum-preserving correction diffusion equation distorted mesh nine-point scheme

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Existence results for anti-periodic fractional coupled systems with p- Laplacian operator via measure of noncompactness in Banach spaces

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Journal of Mathematical Sciences (United States) 2023年第2期271卷 162-175页

作者： El Mfadel, Ali Melliani, Said Elomari, M’hamed Superior School of Technology Sultan Moulay Slimane University Khenifra Morocco Laboratory of Applied Mathematics and Scientific Computing Sultan Moulay Slimane University Beni Mellal Morocco

The aim of this paper is to investigate the existence of anti-periodic solutions for a nonlinear coupled system of Ψ - Caputo fractional differential equations with p- Laplacian operator in a Banach space. The proofs of our main results are based on Mönch’s fixed point theorem and some basic tools of Ψ - Caputo fractional calculus paired with measures of noncompactness. As an application, our theoretical results have been illustrated by providing an interesting example. © 2023, The Author(s), under exclusive licence to Springer Nature Switzerland AG.

关键词： Measures of noncompactness p- Laplacian operator Ψ -Caputo fractional derivative Ψ -fractional integral

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Federated Learning for the Efficient Detection of Steganographic Threats Hidden in Image Icons 1st

Federated Learning for the Efficient Detection of Stegano...

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1st International Conference on Pervasive Knowledge and Collective Intelligence on Web and Social Media, PerSOM 2022

作者： Cassavia, Nunziato Caviglione, Luca Guarascio, Massimo Liguori, Angelica Surace, Giuseppe Zuppelli, Marco Institute for High Performance Computing and Networking Rende Italy Institute for Applied Mathematics and Information Technologies Genova Italy University of Calabria Rende Italy

ISBN: (纸本)9783031314681

An increasing number of threat actors takes advantage of information hiding techniques to prevent detection or to drop payloads containing attack routines. With the ubiquitous diffusion of mobile applications, high-resolution icons should be considered a very attractive carrier for cloaking malicious information via steganographic mechanisms. Despite machine learning approaches proven to be effective to detect hidden payloads, the mobile scenario could challenge their deployment in realistic use cases, for instance due to scalability constraints. Therefore, this paper introduces an approach based on federated learning able to prevent hazards characterizing production-quality scenarios, including different privacy regulations and lack of comprehensive datasets. Numerical results indicate that our approach achieves performances similar to those of centralized solutions. © 2023, ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering.

关键词： Deep learning

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computing the many-body Green's function with adaptive variational quantum dynamics

arXiv

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arXiv 2023年

作者： Gomes, Niladri Williams-Young, David B. de Jong, Wibe A. Applied Mathematics and Computing Sciences Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States

We present a method to compute the many-body real time Green’s function using an adaptive variational quantum dynamics simulation approach. The real-time Green’s function involves time evolution of a quantum state with one additional electron with respect to the ground state wavefunction that is first expressed as a linear linear combination of state vectors. The real time evolution and the Green’s function is obtained by combining the dynamics of the individual statevectors in the linear combination. The use of the adaptive protocol enables us to generate compact ansätze on-the-fly while running the simulation. In order to improve the convergence of spectral features Padé approximants are applied to obtain the Fourier transform of the Green’s function. We demonstrate the evaluation of the Green’s function on a IBM Q quantum computer. As a part of our error mitigation strategy, we develop a resolution enhancing method that we successfully apply on the noisy data from the real quantum hardware. Copyright © 2023, The Authors. All rights reserved.

关键词： Quantum computers

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LIE SYMMETRY ANALYSIS, PARAMETRIC REDUCTION AND CONSERVATION LAWS OF (3+1) DIMENSIONAL NONLINEAR DISPERSIVE SOLITON EQUATION

arXiv

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arXiv 2025年

作者： Singhal, Anshika Joshi, Urvashi Arora, Rajan Department of Applied Mathematics and Scientific Computing Indian Institute of Technology Roorkee India

The core focus of this research work is to obtain invariant solutions and conservation laws of the (3+1)-dimensional Zakharov–Kuznetsov (ZK) equation which describes the phenomenon of wave stability and solitons propagation. ZK equation is significant in fluid dynamics, nonlinear optics, and acoustics. ZK equation plays an important role in understanding the behavior of nonlinear, dispersive waves especially in the presence of the magnetic field. Lie symmetry analysis has been applied to the (3+1)-dimensional ZK equation to derive invariant solutions. These solutions reveal how waves retain their shape as they travel, how they interact in space, and the impact of magnetic fields on wave propagation. Using the Lie symmetry, the (3+1) dimensional Zakharov-Kuznetsov equation is reduced to various ordinary differential equations. It also concludes with the conservation laws and non-linear self-adjointness property. Additionally, we align our findings with real-life problems, namely plasma physics, electromagnetic wave propagation, and water wave dynamics, providing the applicability of our theoretical results. Copyright © 2025, The Authors. All rights reserved.

关键词： Electromagnetic wave propagation in plasma

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