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An Access Control Scheme Using Heterogeneous Signcryption for IoT Environments

Computers, Materials & Continua 2022年第3期70卷 4307-4321页

作者： Insaf Ullah Hira Zahid fahad Algarni Muhammad Asghar Khan Hamdard Institute of Engineering and Technology Islamabad44000Pakistan Department of Information Technology Abbottabad University of Science and TechnologyAbbottabadPakistan College of Computing and Information Technology The University of BishaBishaSaudi Arabia

When the Wireless Sensor Network(WSN)is combined with the Internet of Things(IoT),it can be employed in a wide range of applications,such as agriculture,industry 4.0,health care,smart homes,among *** the big data generated by these applications in Cloud Servers(CSs),requires higher levels of authenticity and confidentiality during communication conducted through the *** is one of the most promising approaches nowadays for overcoming such obstacles,due to its combined nature,i.e.,signature and encryption.A number of researchers have developed schemes to address issues related to access control in the IoT literature,however,the majority of these schemes are based on homogeneous *** will be neither adequate nor practical for heterogeneous IoT *** addition,these schemes are based on bilinear pairing and elliptic curve cryptography,which further requires additional processing time and more communication overheads that is inappropriate for real-time ***,this paper aims to solve the above-discussed issues,we proposed an access control scheme for IoT environments using heterogeneous signcryption scheme with the efficiency and security hardiness of hyperelliptic *** the security services such as replay attack prevention,confidentiality,integrity,unforgeability,non-repudiations,and forward secrecy,the proposed scheme has very low computational and communication costs,when it is compared to existing *** is primarily because of hyperelliptic curve lighter nature of key and other *** AVISPA tool is used to simulate the security requirements of our proposed scheme and the results were under two backbends(Constraint Logic-based Attack Searcher(CL-b-AtSER)and On-the-Fly Model Checker(ON-t-FL-MCR))proved to be SAFE when the presented scheme is coded in HLPSL *** scheme was proven to be capable of preventing a variety of attacks,including confidentiality,integrity,unforge

关键词： Internet of Things(IoT) access control big data heterogeneous signcryption

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Analysis of Local Diagnostic Reference Levels for Pediatric Patients Undergoing 18F-FDG PET/CT Imaging for Oncology

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Journal of Applied Mathematics and Physics 2023年第7期11卷 2144-2155页

作者： Saad Alqahtani Khaled Soliman Saad alotaibi Khaled Alnofaie Abdullah Alahmari fahad Alyahya Abdullah Albdullah Rashed Alharbi Radiodiagnostic and Medical Imaging Department Prince Sultan Military Medical City Riyadh Saudi Arabia Medical Physics Department Prince Sultan Military Medical City Riyadh Saudi Arabia

Background: The PET/CT imaging studies have two doses components the dose from the PET radiopharmaceutical and the other from the low dose CT used for PET images attenuation correction. We have one PET/CT scanner at our institution a Philips Time of Flight scanner. Our local patient’s radiation protection rules requires continuous assessment of radiation doses delivered to our patients. Purposes: The objectives of this study are to develop a weight- based facility DRLs for paediatric F-18-FDG PET-CT imaging for oncology in a large tertiary hospital and to determine whether the calculated DRLs compares with internationally published DRLs. Materials & Methods: Radiation dose data and patient demographics of two-hundreds and sixteen paediatric PET-CT oncology patients imaging procedures from one large tertiary hospital were selected and analysed in order to establish a facility paediatric DRLs. Statistical analysis was performed. Results: The PET dose reference levels ranged between [62 - 525] MBq of injected activity for a range of pediatric age groups. The CTDIvol values were between 3.5 and 16.5 mGy for all age groups. Comparison with current EANM and SNMMI recommendations of patient’s dose are discussed. Conclusion: Our pediatric PET/CT reference levels are higher than the ones reported internationally with notable variations. .

关键词： Diagnostic Reference Levels PET/CT 18-F-FDG Pediatric Radiation Dose CTDIvol Oncology

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Bifurcation Analysis and Bounded Optical Soliton Solutions of the Biswas-Arshed Model

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Computer Modeling in Engineering & Sciences 2023年第6期135卷 2197-2217页

作者： fahad Sameer Alshammari Md Fazlul Hoque Harun-Or-Roshid Muhammad Nadeem Department of Mathematics College of Science at AlkharjPrince Sattam bin Abdulaziz UniversityAlkharj11942Saudi Arabia Department of Mathematics Pabna University of Science and TechnologyPabna6600Bangladesh Faculty of Science Yibin UniversityYibin644000China

We investigate the bounded travelling wave solutions of the Biswas-Arshed model(BAM)including the low group velocity dispersion and excluding the self-phase *** integrate the nonlinear structure of the model to obtain bounded optical solitons which pass through the optical fibers in the non-Kerr *** bifurcation technique of the dynamical system is used to achieve the parameter bifurcation sets and split the parameter space into various areaswhich correspond to different phase *** bounded optical solitons and bounded periodic wave solutions are identified and derived conforming to each region of these phase *** also apply the extended sinh-Gordon equation expansion and the generalized Kudryashov integral schemes to obtain additional bounded optical soliton solutions of the BAM *** present more bounded optical shock waves,the bright-dark solitary wave,and optical rogue waves for the structure model via these schemes in different aspects.

关键词： The Biswas-Arshed model the extended sinh-Gordon equation expansion the generalized Kudryashov approach shock wave double solitons optical singular double solitons chirp-free bright-dark double solitons

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Application of ML&AI to model petrophysical and geomechanical properties of shale reservoirs e A systematic literature review

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Petroleum 2022年第2期8卷 158-166页

作者： fahad I.Syed Abdulla AlShamsi Amirmasoud K.Dahaghi Neghabhan S The University of Kansas School of EngineeringChemical and Petroleum Engineering1450 Jayhawk Blvd.Lawrence66045USA

Extensive reviews and cross-comparison studies are essential to analyze the emerging developments in a specific field of *** the past decade,hydrocarbon exploration and exploitation from the shale reservoirs have been the most discussed and researched area around the globe.A dramatic development in shale formations became the game-changer,especially in the *** the other hand,Artificial Intelligence(AI)and Machine Learning(ML)are playing an important role in the rapid development in all the industries through automating most of the routine *** oil industry is also getting equal benefits of AI and ML for the reservoir development planning and its operational accuracy through a series of automated *** the field development,computerized static and dynamic simulation models are generated based on several Petrophysical and Geomechanical properties gathered through different resources that are quite time-taking and *** and ML have made this process much easier,faster,and economical by means of learning through uncounted experiences from already explored and developed reservoirs,their rock properties,and the crossponding fluid flow behavior under different circumstances and hence,predicts *** article provides a comprehensive literature review in the area of AI and ML applications to model Petrophysical and Geomechanical properties using different approaches and ***,a systematic publication counts in each field of subject study per year in different literature databases are presented that infect reflects the trending interest in this ***,multiple AI and ML techniques are discussed in detail which have been tested in the last decade for the sake of achieving higher accuracy in Petrophysical and Geo-Mechanical simulation models.

关键词： AI ML Petrophysics GeoMechanics

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Feasibility Study for a Hybrid Power Plant(PV-Wind-Diesel-Storage)Connected to the Electricity Grid

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Fluid Dynamics & Materials Processing 2022年第6期18卷 1607-1617页

作者： fahad Maoulida Kassim Mohamed Aboudou Djedjig Rabah Mohammed El-Ganaoui Laboratory LEMAFaculty of Sciences and TechniquesUniversity of ComorosMoroniComoros Laboratory LERMABIUT Henri Poincaréof LongwyUniversity of LorraineNancyFrance IREMIS Institute CUFRUniversity of MayotteDembeni MayotteFrance

In this work,we present a feasibility study for a new hybrid power plant(PV-Wind-Diesel-Storage)directly connected to the electrical *** simulations are performed to verify the performance of the hybrid system under different scenarios using real meteorological *** is shown that the performances of the hybrid system connected to the electrical network depend obviously on the available energy resources and constraints because the renewable energies are *** addition,the price of the kWh of electricity supplied by the hybrid system is determined,which amounts to$0.209/kWh,which is very cost effective and satisfactory for the considered sample conditions(Comoros Island).

关键词： Hybrid energy renewable energy HOMER connected grid

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The Double Edge Sword Based Distributed Executor Service

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Computer Systems Science & Engineering 2022年第8期42卷 589-604页

作者： Faisal Bahadur Arif Iqbal Umar Insaf Ullah fahad Algarni Muhammad Asghar Khan Department of Information Technology Hazara UniversityMansehra21300Pakistan Hamdard Institute of Engineering and Technology Islamabad 44000Pakistan College of Computing and Information Technology The University of BishaBishaSaudi Arabia

Scalability is one of the most important quality attribute of softwareintensive systems,because it maintains an effective performance parallel to the large fluctuating and sometimes unpredictable *** order to achieve scalability,thread pool system(TPS)(which is also known as executor service)has been used extensively as a middleware service in software-intensive *** optimization is a challenging problem that determines the optimal size of thread pool dynamically on *** case of distributed-TPS(DTPS),another issue is the load balancing b/w available set of TPSs running at backend *** DTPSs are overloaded either due to an inappropriate TPS optimization strategy at backend servers or improper load balancing scheme that cannot quickly recover an ***,the performance of software-intensive system is ***,in this paper,we propose a new DTPS that follows the collaborative round robin load balancing that has the effect of a double-edge *** the one hand,it effectively performs the load balancing(in case of overload situation)among available TPSs by a fast overload recovery procedure that decelerates the load on the overloaded TPSs up to their capacities and shifts the remaining load towards other gracefully running *** on the other hand,its robust load deceleration technique which is applied to an overloaded TPS sets an appropriate upper bound of thread pool size,because the pool size in each TPS is kept equal to the request rate on it,hence dynamically optimizes *** evaluated the results of the proposed system against state of the art DTPSs by a clientserver based simulator and found that our system outperformed by sustaining smaller response times.

关键词： Software-intensive systems distributed executor service load balancing overload monitoring multi-threading thread pool performance

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An Optimal Method for Speech Recognition Based on Neural Network

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Intelligent Automation & Soft Computing 2023年第5期36卷 1951-1961页

作者： Mohamad Khairi Ishak DagØivind Madsen fahad Ahmed Al-Zahrani School of Electrical and Electronic Engineering Universiti Sains MalaysiaNibong Tebal14300Malaysia University of South-Eastern Norway Bredalsveien 143511HønefossNorway Computer Engineering Department Umm Al-Qura UniversityMecca24381Saudi Arabia

Natural language processing technologies have become more widely available in recent years,making them more useful in everyday *** learning systems that employ accessible datasets and corporate work to serve the whole spectrum of problems addressed in computational linguistics have lately yielded a number of promising *** methods were particularly advantageous for regional languages,as they were provided with cut-ting-edge language processing tools as soon as the requisite corporate information was *** bulk of modern people are unconcerned about the importance of *** aloud,on the other hand,is an effective technique for nour-ishing feelings as well as a necessary skill in the learning *** paper pro-posed a novel approach for speech recognition based on neural *** attention mechanism isﬁrst utilized to determine the speech accuracy andﬂuency assessments,with the spectrum map as the feature extraction *** increase phoneme identiﬁcation accuracy,reading precision,for example,employs a new type of deep *** makes use of the exportchapter tool,which provides a corpus,as well as the TensorFlow framework in the experimental *** experimentalﬁndings reveal that the suggested model can more effectively assess spoken speech accuracy and readingﬂuency than the old model,and its evalua-tion model’s score outcomes are more accurate.

关键词： Machine learning neural networks speech recognition signal processing learning process ﬂuency and accuracy

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dep1 improves rice grain yield and nitrogen use efficiency simultaneously by enhancing nitrogen and dry matter translocation

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Journal of Integrative Agriculture 2022年第11期21卷 3185-3198页

作者： HUANG Li-ying Li Xiao-xiao ZHANG Yun-bo Shah fahad WANG Fei National Key Laboratory of Crop Genetic Improvement MARA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze RiverCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070P.R.China Engineering Research Center of Ecology and Agricultural Use of Wetland Ministry of EducationYangtze UniversityJingzhou 434025P.R.China College of Agriculture Yangtze UniversityJingzhou 434025P.R.China Hubei Collaborative Innovation Center for Grain Industry Yangtze UniversityJingzhou 434025P.R.China Department of Agronomy The University of HaripurHaripur 22620Pakistan

The rice cultivars carrying dep1(dense and erect panicle 1)have the potential to achieve both high grain yield and high nitrogen use efficiency(NUE).However,few studies have focused on the agronomic and physiological performance of those cultivars associated with high yield and high NUE under field ***,we evaluated the yield performance and NUE of two near-isogenic lines(NILs)carrying DEP1(NIL-DEP1)and dep1-1(NIL-dep1)genes under the Nanjing 6 background at 0 and 120 kg N ha^(–1).Grain yield and NUE for grain production(NUEg)were 25.5 and 21.9%higher in NIL-dep1 compared to NIL-DEP1 averaged across N treatments and planting years,*** yield advantage of NIL-dep1 over NIL-DEP1 was mainly due to larger sink size(i.e.,higher total spikelet number),grainfilling percentage,total dry matter production,and harvest index.N utilization rather than N uptake contributed to the high yield of *** higher NUEg in NIL-dep1 was associated with higher N and dry matter translocation efficiency,lower leaf and stem N concentration at maturity,and higher glutamine synthetase(GS)activity in *** conclusion,dep1 improved grain yield and NUE by increasing N and dry matter transport due to higher leaf GS activity under field conditions during the grain-filling period.

关键词： dep1 grain yield nitrogen use efficiency nitrogen translocation rice

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Automated Handwriting Recognition and Speech Synthesizer for Indigenous Language Processing

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Computers, Materials & Continua 2022年第8期72卷 3913-3927页

作者： Bassam A.Y.Alqaralleh fahad Aldhaban Feras Mohammed A-Matarneh Esam A.AlQaralleh MIS Department College of Business AdministrationUniversity of Business and TechnologyJeddah21448Saudi Arabia Department of Computer Science University College of DubaUniversity of Tabuk71491Saudi Arabia School of Engineering Princess Sumaya University for TechnologyAmman11941Jordan

In recent years,researchers in handwriting recognition analysis relating to indigenous languages have gained significant internet among research *** recent developments of artificial intelligence(AI),natural language processing(NLP),and computational linguistics(CL)find useful in the analysis of regional low resource *** lexical task participation might be elaborated to various applications in the *** is apparent from the availability of effective machine recognition models and open access handwritten *** language is a commonly spoken Semitic language,and it is written with the cursive Arabic alphabet from right to *** handwritten Character Recognition(HCR)is a crucial process in optical character *** this view,this paper presents effective Computational linguistics with Deep Learning based Handwriting Recognition and Speech Synthesizer(CLDL-THRSS)for Indigenous *** presented CLDL-THRSS model involves two stages of operations namely automated handwriting recognition and speech ***,the automated handwriting recognition procedure involves preprocessing,segmentation,feature extraction,and ***,the Capsule Network(CapsNet)based feature extractor is employed for the recognition of handwritten Arabic *** optimal hyperparameter tuning,the cuckoo search(CS)optimization technique was included to tune the parameters of the CapsNet ***,deep neural network with hidden Markov model(DNN-HMM)model is employed for the automatic speech *** validate the effective performance of the proposed CLDL-THRSS model,a detailed experimental validation process takes place and investigates the outcomes interms of different *** experimental outcomes denoted that the CLDL-THRSS technique has demonstrated the compared methods.

关键词： Computational linguistics handwriting character recognition natural language processing indigenous language

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Reactions’Descriptors Selection and Yield Estimation Using Metaheuristic Algorithms and Voting Ensemble

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Computers, Materials & Continua 2022年第3期70卷 4745-4762页

作者： Olutomilayo Olayemi Petinrin Faisal Saeed Xiangtao Li fahad Ghabban Ka-Chun Wong Department of Computer Science City University of Hong KongKowloon TongHong Kong SAR Information Systems Department College of Computer Science and EngineeringTaibah UniversityTaybaMedina42353Saudi Arabia Hong Kong Institute for Data Science City University of Hong KongKowloon TongHong Kong SAR

Bioactive compounds in plants,which can be synthesized using N-arylationmethods such as the Buchwald-Hartwig reaction,are essential in drug discovery for their pharmacological *** descriptors are necessary for the estimation of yields in these *** study explores ten metaheuristic algorithms for descriptor selection and model a voting ensemble for *** algorithms were evaluated based on computational time and the number of selected *** show that robust performance is obtained with more descriptors,compared to cases where fewer descriptors are *** essential descriptor was deduced based on the frequency of occurrence within the 50 extracted data subsets,and better performance was achieved with the voting ensemble than other algorithms with RMSE of 6.4270 and R^(2) of *** results and deductions from this study can be readily applied in the decision-making process of chemical synthesis by saving the computational cost associated with initial descriptor selection for yield *** ensemble model has also shown robust performance in its yield estimation ability and efficiency.

关键词： Buchwald-Hartwig reaction descriptor selection machine learning metaheuristic algorithm palladium-catalyzed cross-coupling reaction voting ensemble

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