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5DGWO-GAN:A Novel Five-Dimensional Gray Wolf Optimizer for Generative Adversarial Network-Enabled Intrusion detection in IoT Systems

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Computers, Materials & Continua 2025年第1期82卷 881-911页

作者： Sarvenaz Sadat Khatami Mehrdad Shoeibi Anita Ershadi Oskouei Diego Martín Maral Keramat Dashliboroun department of Data Science Engineering University of HoustonHoustonTX 77204USA The WPI Business School Worcester Polytechnic InstituteWorcesterMA 01609USA School of Systems and Enterprises Stevens Institute of TechnologyHobokenNJ 07030USA department of Computer Science Escuela de Ingeniería Informática de SegoviaUniversidad de ValladolidSegovia40005Spain Ernest G.Welch School of Art&design Georgia State UniversityAtlantaGA 30303USA

The Internet of Things(IoT)is integral to modern infrastructure,enabling connectivity among a wide range of devices from home automation to industrial control *** the exponential increase in data generated by these interconnected devices,robust anomaly detection mechanisms are *** detection in this dynamic environment necessitates methods that can accurately distinguish between normal and anomalous behavior by learning intricate *** paper presents a novel approach utilizing generative adversarial networks(GANs)for anomaly detection in IoT ***,optimizing GANs involves tuning hyper-parameters such as learning rate,batch size,and optimization algorithms,which can be challenging due to the non-convex nature of GAN loss *** address this,we propose a five-dimensional Gray wolf optimizer(5DGWO)to optimize GAN *** 5DGWO introduces two new types of wolves:gamma(γ)for improved exploitation and convergence,and theta(θ)for enhanced exploration and escaping local *** proposed system framework comprises four key stages:1)preprocessing,2)generative model training,3)autoencoder(AE)training,and 4)predictive model *** generative models are utilized to assist the AE training,and the final predictive models(including convolutional neural network(CNN),deep belief network(DBN),recurrent neural network(RNN),random forest(RF),and extreme gradient boosting(XGBoost))are trained using the generated data and AE-encoded *** evaluated the system on three benchmark datasets:NSL-KDD,UNSW-NB15,and *** conducted on diverse IoT datasets show that our method outperforms existing anomaly detection strategies and significantly reduces false *** 5DGWO-GAN-CNNAE exhibits superior performance in various metrics,including accuracy,recall,precision,root mean square error(RMSE),and convergence *** proposed 5DGWO-GAN-CNNAE achieved the lowest RMSE values across the NSL-KDD,UNSW-NB15,and

关键词： Internet of things intrusion detection generative adversarial networks five-dimensional binary gray wolf optimizer deep learning

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A PD-Type State-dependent Riccati Equation With Iterative Learning Augmentation for Mechanical Systems

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IEEE/CAA Journal of Automatica Sinica 2022年第8期9卷 1499-1511页

作者： Saeed Rafee Nekoo JoséÁngel Acosta Guillermo Heredia Anibal Ollero GRVC Robotics Lab. Depto de Ingeniería de Sistemas y AutomáticaEscuela Técnica Superior de IngenieríaUniversidad de SevillaSeville 41092Spain

This work proposes a novel proportional-derivative(PD)-type state-dependent Riccati equation(SDRE)approach with iterative learning control(ILC)*** the one hand,the PD-type control gains could adopt many useful available criteria and tools of conventional PD *** the other hand,the SDRE adds nonlinear and optimality characteristics to the controller,i.e.,increasing the stability *** advantages with the ILC correction part deliver a precise control law with the capability of error reduction by *** SDRE provides a symmetric-positive-definite distributed nonlinear suboptimal gain K(x)for the control input law u=–R–1(x)BT(x)K(x)*** sub-blocks of the overall gain R–1(x)BT(x)K(x),are not necessarily symmetric positive definite.A new design is proposed to transform the optimal gain into two symmetric-positive-definite gains like PD-type controllers as u=–KSP(x)e–KSD(x)?.The new form allows us to analytically prove the stability of the proposed learning-based controller for mechanical systems;and presents guaranteed uniform boundedness in finite-time between learning *** symmetric PD-type controller is also developed for the state-dependent differential Riccati equation(SDDRE)to manipulate the final *** SDDRE expresses a differential equation with a final boundary condition,which imposes a constraint on time that could be used for finitetime ***,the availability of PD-type finite-time control is an asset for enhancing the conventional classical linear controllers with this *** learning rules benefit from the gradient descent method for both regulation and tracking *** of the advantages of this approach is a guaranteed-stability even from the first loop of learning.A mechanical manipulator,as an illustrative example,was simulated for both regulation and tracking *** experimental validation was done to show the capability of the system in practice by the implementation of the proposed metho

关键词： Closed-loop iterative learning control(ILC) PD-type SDRE SDDRE symmetric

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Benchmarking Approach to Compare Web Applications Static Analysis Tools detecting OWASP Top Ten Security Vulnerabilities

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Computers, Materials & Continua 2020年第9期64卷 1555-1577页

作者： Juan R.Bermejo Higuera Javier Bermejo Higuera Juan A.Sicilia Montalvo Javier Cubo Villalba Juan JoséNombela Pérez escuela superior de ingeniería y Tecnología Universidad Internacional de La RiojaLa Rioja26006Spain

To detect security vulnerabilities in a web application,the security analyst must choose the best performance Security Analysis Static Tool(SAST)in terms of discovering the greatest number of security vulnerabilities as *** compare static analysis tools for web applications,an adapted benchmark to the vulnerability categories included in the known standard Open Web Application Security Project(OWASP)Top Ten project is *** information of the security effectiveness of a commercial static analysis tool is not usually a publicly accessible research and the state of the art on static security tool analyzers shows that the different design and implementation of those tools has different effectiveness rates in terms of security *** the significant cost of commercial tools,this paper studies the performance of seven static tools using a new methodology proposal and a new benchmark designed for vulnerability categories included in the known standard OWASP Top Ten ***,the practitioners will have more precise information to select the best tool using a benchmark adapted to the last versions of OWASP Top Ten *** results of this work have been obtaining using widely acceptable metrics to classify them according to three different degree of web application criticality.

关键词： Web application benchmark security vulnerability Security Analysis Static Tools assessment methodology false positive false negative precision f-measure

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Emerging patterns in the construction of Sejima’s,Sanaa’s and Nishizawa’s domestic spaces,from 1987 to 2010

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Frontiers of Architectural Research 2022年第3期11卷 375-401页

作者： Pedro Garcia Martinez Francisco Javier Maroto Ramos Universidad Politecnica de Cartagena Escuela Tecnica Superior de Arquitectura y Tecnologfa de EdificationCartagena30201Spain Universidad Politecnica de Madrid Escuela Tecnica Superior de Arquitectura de MadridMadrid28040Spain

Sejima and Nishizawa have developed their work without explicitly referencing a theoretical ***,they have stated that their housing projects describe their"architectural biography."This study presents the hypothesis that systermic theories had infu-enced their housing projects at a spatial and constructive *** the aim of testing it,the research produces four lines of ***,we observe that the word system is prominently current in a signifcant sample of their published *** describe how architects like Tomi-naga,Ito,Taki,and Shinohara,who infuenced Sejima when she was still a student,discussed this concept inspired by Christopher Alexander's *** second line brings together all the couple's single-family housing projects published between 1987 and 2010 for the first time in a single document,as well as an original graphic-constructive reconstruction of the most outstanding ***,we unveil the emergence of four constructive patterns by applying these theories to the graphic material ***,we summarize the results in dia-grams,showing the frequency,intensity,and continuity of the identified patterns in the four phases throughout the studied *** the hypothesis facilitates further research relate their domestic work and their other types of projects.

关键词： Architecture House Pattern Sejima Nishizawa SANAA

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Revisiting the analytical solutions for ultimate bearing capacity of pile embedded in rocks

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第6期15卷 1506-1519页

作者： A.Picardo M.A.Millán R.Galindo A.Alencar escuela Técnica superior de arquitectura Universidad Politécnica de MadridMadrid28040Spain escuela Técnica superior de ingenieros de Caminos Canales y Puertos de MadridUniversidad Politécnica de MadridMadrid28040Spain

This paper investigates the validity and shortcomings of the existing analytical solution for the ultimate bearing capacity of a pile embedded in a rock mass using the modified HoekeBrown failure *** this criterion is considered a reference value for empirical and numerical calculations,some limitations of its basic simplifications have not been clarified *** research compares the analytical results obtained from the novel discontinuity layout optimization(DLO)method and the numerical solutions from the finite difference method(FDM).The limitations of the analytical solution are considered by comparing different DLO failure modes,thus allowing for the first time a critical evaluation of its scope and conditioning for *** of up to 40%in the bearing capacity and unrealistic failure modes are the main issues in the analytical *** main aspects of the DLO method are also analyzed with an emphasis on the linearization of the rock failure criterion and the accuracy resulting from the discretization *** analysis demonstrates DLO as a very efficient and accurate tool to address the pile tip bearing capacity,presenting considerable advantages over other methods.

关键词： Discontinuity layout optimization(DLO) Analytical solution Bearing capacity deep foundations HoekeBrown failure criterion Finite difference method(FDM)

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Impact of radiative cooling on the energy performance of courtyards in Mediterranean climate

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Building Simulation 2024年第9期17卷 1491-1513页

作者： Carlos-Antonio Domínguez-Torres Antonio Domínguez-delgado escuela Técnica superior de arquitectura Universidad de SevillaAv.de Reina Mercedes241012 SevillaSpain department of Applied Mathematics 1 Escuela Técnica Superior de ArquitecturaUniversidad de SevillaAv.de Reina Mercedes241012 SevillaSpain

Radiative cooling has proven to be a useful tool to address the problems of lack of comfort and excessive energy consumption in situations of high temperatures,overheating and heat ***,incorporating courtyards in warm climate zones has been found to be highly beneficial in addressing similar ***,there is interest in analyzing the combined effects of both:radiative cooling and *** paper presents an analysis of the impact of the application of radiative cooling on a courtyard using a comprehensive simulation approach that includes a CFD model for the thermodynamic airflow in the adjacent roofs and inside the courtyard,equations for the transient heat conduction through roofs,walls and courtyard slabs,and a hybrid raytracing-radiosity model for the evaluation of the solar radiation reaching the building surfaces and its reflections,both of specular and diffuse origin,and for the calculation of the thermal radiation exchange,especially with the *** results show that in the hot season,the courtyard with radiative cooling always provides lower temperatures than the initial courtyard does,with a temperature range of 18.33℃to 33.78℃,compared to a range of 19.32℃to 38.00℃in the initial courtyard,and producing a greater difference with outdoor temperatures that can reach 12℃versus 8℃for the reference *** addition,it was found that the courtyard with radiative cooling is able to significantly reduce the observed nighttime overheating by providing lower temperatures than the outdoor temperatures in the 50%of the nights *** was also found that the thermal loads to achieve indoor thermal comfort in the spaces adjacent to the courtyard were reduced by 63.46%to 69.85%.

关键词： radiative cooling passive cooling CFD three-dimensional modeling energy saving thermal comfort

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Systematic Approach for Web Protection Runtime Tools’Effectiveness Analysis

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Computer Modeling in Engineering & Sciences 2022年第12期133卷 579-599页

作者： Tomás Sureda Riera Juan Ramón Bermejo Higuera Javier Bermejo Higuera Juan Antonio Sicilia Montalvo José Javier Martínez Herráiz Computer Science department University of AlcaláMadrid28801Spain escuela superior de ingeniería y Tecnología Universidad Internacional de La RiojaLogrono26006Spain

Web applications represent one of the principal vehicles by which attackers gain access to an organization’s network or ***,different approaches to protect web applications have been proposed to *** them,the two major approaches are Web Application Firewalls(WAF)and Runtime Application Self Protection(RASP).It is,thus,essential to understand the differences and relative effectiveness of both these approaches for effective decisionmaking regarding the security of web *** we present a comparative study between WAF and RASP simulated settings,with the aim to compare their effectiveness and efficiency against different categories of *** this,we used computation of different metrics and sorted their results using F-Score *** found that RASP tools scored better than WAF *** this study,we also developed a new experimental methodology for the objective evaluation ofweb protection tools since,to the best of our knowledge,nomethod specifically evaluates web protection tools.

关键词： Web Application Firewall(WAF) Runtime Application Self Protection(RASP) F-Score web attacks experimental methodology

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Fractal interpolation:a sequential approach

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Applied Mathematics(A Journal of Chinese Universities) 2021年第3期36卷 330-341页

作者： N.Vijender M.A.Navascus department of Mathematics Visvesvaraya National Institute of Technology NagpurNagpur 440010India departamento de Matem´atica Aplicada Escuela de Ingenier´ıa y ArquitecturaUniversidad de ZaragozaZaragoza 50018Spain

Fractal interpolation is a modern technique to fit and analyze scientific *** develop a new class of fractal interpolation functions which converge to a data generating(original)function for any choice of the scaling ***,our method offers an alternative to the existing fractal interpolation functions(FIFs).We construct a sequence of-FIFs using a suitable sequence of iterated function systems(IFSs).Without imposing any condition on the scaling vector,we establish constrained interpolation by using fractal *** particular,the constrained interpolation discussed herein includes a method to obtain fractal functions that preserve positivity inherent in the given *** existence of Cr--FIFs is *** identify suitable conditions on the associated scaling factors so that-FIFs preserve r-convexity in addition to the Cr-smoothness of original function.

关键词： fractal interpolation convergence sequence of operators constrained-FIFs fractal splines

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MMALE—A Methodology for Malware Analysis in Linux Environments

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Computers, Materials & Continua 2021年第5期67卷 1447-1469页

作者： JoséJavier de Vicente Mohino Javier Bermejo Higuera Juan Ramón Bermejo Higuera Juan Antonio Sicilia Montalvo Manuel Sánchez Rubio JoséJavier Martínez Herraiz escuela superior de ingeniería y Tecnología Universidad Internacional de La RiojaLogroño26006La RiojaSpain departamento de Ciencias de la Computación de la escuela Politécnica superior Universidad de Alcaláde HenaresAlcaláde HenaresMadridSpain

In a computer environment,an operating system is prone to malware,and even the Linux operating system is not an *** recent years,malware has evolved,and attackers have become more qualified compared to a few years ***,Linux-based systems have become more attractive to cybercriminals because of the increasing use of the Linux operating system in web servers and Internet of Things(IoT)*** is the most employed OS,so most of the research efforts have been focused on its malware protection rather than on other operating *** a result,hundreds of research articles,documents,and methodologies dedicated to malware analysis have been ***,there has not been much literature concerning Linux security and protection from *** address all these new challenges,it is necessary to develop a methodology that can standardize the required steps to perform the malware analysis in depth.A systematic analysis process makes the difference between good and ordinary malware ***,a deep malware comprehension can yield a faster and much more efficient malware *** order to address all mentioned challenges,this article proposed a methodology for malware analysis in the Linux operating system,which is a traditionally overlooked field compared to the other operating *** proposed methodology is tested by a specific Linux malware,and the obtained test results have high effectiveness in malware detection.

关键词： Malware analysis methodology analysis Linux malware IoT malware

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Fast Single Image Haze Removal Method for Inhomogeneous Environment Using Variable Scattering Coefficient

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Computer Modeling in Engineering & Sciences 2020年第6期123卷 1175-1192页

作者： Rashmi Gupta Manju Khari Vipul Gupta Elena Verdú Xing Wu Enrique Herrera-Viedma Rubén González Crespo Ambedkar Institute of Advanced Communication Technologies and Research New Delhi110031India escuela superior de ingeniería y Tecnología Universidad Internacional de La RiojaLogroño26006Spain School of Computer Engineering and Science Shanghai UniversityShanghai200444China escuela Técnica superior de ingenierías Informática y de Telecomunicación Universidad de GranadaGranada18071Spain

The images capture in a bad environment usually loses its fidelity and *** the light rays travel towards its destination they get scattered several times due to the tiny particles of fog and pollutants in the environment,therefore the energy gets lost due to multiple scattering till it arrives its destination,and this degrades the *** the images taken in bad weather appear in bad ***,single image haze removal is quite a bit tough *** research has been done in the haze removal algorithm but in all the techniques,the coefficient of scattering is taken as a constant according to the homogeneous atmosphere but in real time this does not ***,this paper introduces a simple and efficient method so that the scattering coefficient becomes variable according to the inhomogeneous ***,this research aims to remove the haze with the help of a fast and effective algorithm i.e.,Prior Color Fading,according to the inhomogeneous environmental ***,to filter the depth map,the authors used a weighted guided image filtering which removes the drawbacks of guided image *** the scattering coefficient is made variable according to the inhomogeneous atmosphere and then the Simple Color Balance Algorithm is applied so that the readability property of images can be *** proposed method tested on various general outdoor images and synthetic hazy images and analyzed on various parameters Mean Square Error(MSE),Root Mean Square Error(RMSE),Peak Signal to Noise Ratio(PSNR),Mean Structural Similarity(MSSIM)and the Universal Objective Quality Index(UQI).Experimental results for the proposed method show that the proposed approach provides better results as compared to the state-of-the-art haze removal algorithms.

关键词： Image dehazing scattering coefficient simple color balance inhomogeneous environment

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