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Securing Transmitted Color Images Using Zero Watermarking and Advanced Encryption Standard on Raspberry Pi

Computer Systems Science & Engineering 2023年第11期47卷 1967-1986页

作者： Doaa Sami Khafaga Sarah m.Alhammad Amal magdi Osama ElKomy Nabil ALashin khalid m.hosny Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Information Technology Zagazig UniversityZagazig44519Egypt

Image authentication techniques have recently received a lot of attention for protecting images against unauthorized *** to the wide use of the Internet nowadays,the need to ensure data integrity and authentication *** techniques,such as watermarking and encryption,are used for securing images transmitted via the *** majority of watermarking systems are PC-based,but they are not very *** watermarking methods need to be developed to accommodate real-time applications and provide *** paper presents hybrid data security techniques using a zero watermarking method to provide copyright protection for the transmitted color images using multi-channel orthogonal Legendre Fourier moments of fractional orders(mFrLFms)and the advanced encryption standard(AES)algorithm on a low-cost Raspberry *** order to increase embedding robustness,the watermark picture is scrambled using the Arnold *** watermarking is implemented on the Raspberry Pi to produce a real-time ownership verification *** sending the ownership verification key and the original image to the monitoring station,we can encrypt the transmitted data with AES for additional security and hide any viewable *** receiver next verifies the received image’s integrity to confirm its authenticity and that it has not been tampered *** assessed the suggested algorithm’s resistance to many *** suggested algorithm provides a reasonable degree of robustness while still being *** proposed method provides improved bit error rate(BER)and normalized correlation(NC)values compared to previous zero watermarking *** performance analysis is performed to demonstrate its *** a 256×256 image size,it takes only 2 s to apply the zero-watermark algorithm on the Raspberry Pi.

关键词： Zero watermarking Raspberry Pi advanced encryption standard

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Fast and Accurate Detection of masked Faces Using CNNs and LBPs

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Computer Systems Science & Engineering 2023年第12期47卷 2939-2952页

作者： Sarah m.Alhammad Doaa Sami Khafaga Aya Y.Hamed Osama El-Koumy Ehab R.mohamed khalid m.hosny Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Computer Science Department Sinai UniversityArishNorth SinaiEgypt Department of Information Technology Faculty of Computers and InformaticsZagazig UniversityZagazigEgypt

Face mask detection has several applications,including real-time surveillance,biometrics,*** face masks is also helpful for crowd control and ensuring people wear them *** monitoring personnel,it is impossible to ensure that people wear face masks;automated systems are a much superior option for face mask detection and *** paper introduces a simple and efficient approach for masked face *** architecture of the proposed approach is very straightforward;it combines deep learning and local binary patterns to extract features and classify themasmasked or *** proposed systemrequires hardware withminimal power consumption compared to state-of-the-art deep learning *** proposed system maintains two *** first,this work extracted the local features of an image by using a local binary pattern descriptor,and then we used deep learning to extract global *** proposed approach has achieved excellent accuracy and high *** performance of the proposed method was tested on three benchmark datasets:the realworld masked faces dataset(RmFD),the simulated masked faces dataset(SmFD),and labeled faces in the wild(LFW).Performancemetrics for the proposed technique weremeasured in terms of accuracy,precision,recall,and *** indicated the efficiency of the proposed technique,providing accuracies of 99.86%,99.98%,and 100%for RmFD,SmFD,and LFW,***,the proposed method outperformed state-of-the-art deep learning methods in the recent bibliography for the same problem under study and on the same evaluation datasets.

关键词： Convolutional neural networks face mask detection local binary patterns deep learning computer vision social protection Keras OpenCV TensorFlow Viola-Jones

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Effect of Filler Composition on the Brazing of Alumina to Copper Using Ultrasonic Wave

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Journal of materials Science & Technology 2003年第z1期19卷 176-178页

作者： khalid m. HAFEZ masaaki NAKA Joining & Welding Research Institute Osaka University Ibaraki Osaka 567-0047 Japan Joining & Welding Research Institute Osaka University Ibaraki Osaka 567-0047 Japan

An ultrasonic wave was applied during brazing of alumina to Cu. First alumina was metallized by applying ultrasonicwave in braze bath. Then the metallized alumina was brazed with Cu using the same filler alloy. The filler used wereZn-Al alloys and Zn-Sn Alloys. The weight percent of Al in filler was ranging between 0, 5%, 10%, *** weight percent of tin in filler was ranging between 0, 30%, 60% and 91%, respectively. The joining mechanismwas investigated by measuring the joining strength, hardness and analyzing the microstructure at interface of thejoint. The shear strength and microstructure of the joint strongly depend on the filler composition. The effect ofultrasound was derived primarily from acoustic cavitations, impact and friction of the filler against alumina *** improved the wetting between alumina and the filler, and reflected to improve the joint strength. Anotherultrasonic advantage as to reduce of the joining temperature, that reduced the thermal stress in the braze joint.

关键词： Alumina, Copper, Ultrasonic waves, Fracture stress, microstructure, Brazing

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Quantum Stackelberg Duopoly in a Noninertial Frame

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Chinese Physics Letters 2011年第7期28卷 5-8页

作者： Salman Khan m.khalid Khan Department of Physics Quaid-i-Azam UniversityIslamabad 45320Pakistan

We study the influence of the Unruh effect on quantum Stackelberg *** is shown that the acceleration of a noninertial frame strongly affects the payoffs of the *** validation of the subgame perfect Nash equilibrium is limited to a particular range of acceleration of the noninertial *** benefit of the initial state entanglement in the quantum form of the duopoly in the inertial frame is adversely affected by the *** duopoly can become a follower advantage only in a small region of the acceleration.

关键词： acceleration Stackelberg Quantum

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Symmetry solutions of a nonlinear elastic wave equation with third-order anharmonic corrections

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Applied mathematics and mechanics(English Edition) 2009年第8期30卷 1017-1026页

作者： m.Tahir mustafa khalid masood Department of mathematics and Statistics King Fahd University of Petroleum and MineralsDhahran 31261 Saudi Arabia Department of mathematics Hafr Al-Batin Community College King Fahd University of Petroleum and MineralsP. O. Box 5087 Dhahran 31261 Saudi Arabia

Lie symmetry method is applied to analyze a nonlinear elastic wave equation for longitudinal deformations with third-order anharmonic corrections to the elastic energy. Symmetry algebra is found and reductions to second-order ordinary differential equations （ODEs） are obtained through invariance under different symmetries. The reduced ODEs are further analyzed to obtain several exact solutions in an explicit form. It was observed in the literature that anharmonic corrections generally lead to solutions with time-dependent singularities in finite times singularities, we also obtain solutions which Along with solutions with time-dependent do not exhibit time-dependent singularities.

关键词： group invariant solutions Lie symmetries nonlinear elasticity equations partial differential equations

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Phase Diagram Body-Centredof Catalytic Oxidation of CO on the Surface-Subsurface of a Body-Centred Cubic Structure with Eley-Rideal Process： A monte Carlo Simulation

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Chinese Physics Letters 2004年第9期21卷 1838-1841页

作者： AU.Qaisrani m.khalid musaKaleemBalocht DepartmentofPhysics GomalUniversityD.I.KhanPakistan DepartmentofChemistry GomalUniversityD.I.KhanPakistan

monte Carlo simulation is used to explore the effects of the Eley-Rideal (ER) process on the phase diagram of the Langmuir–Hinshelwood (LH) type monomer–dimer (CO–O2) catalytic reaction on the surface and subsurface of a body-centred cubic structure, which extends to only two layers in the z-direction. The dimer (O2) is adsorbed in such a way that it takes one surface site whereas the second site is from the subsurface. For this mechanism, an interesting situation develops. The production rate of CO2 is found to be consistent with experiment. The qualitative trend of the surface oxygen coverage is not consistent with the experimental situation in one model while it is found to be consistent with that in another model, i.e. the coverage of surface oxygen decreases slowly with increase of concentration of CO (yCO). moreover, the production of CO2 can be predicted in the form of a mathematical relation.

关键词： Phase diagrams

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Bendable tube-shaped supercapacitor based on reduced graphene oxide and Prussian blue coated carbon fiber yarns for energy storage

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Journal of Energy Chemistry 2018年第3期27卷 866-873页

作者： mohd.khalid Ana m.B.Honorato Department of macromolecular Science and Engineering Case Western Reserve University

Carbon fiber yarns（CFY） are promising as a new type of flexible building blocks for the construction of flexible architectures for the energy storage applications. The main hurdle with CFY is how to make them high energy and power capable by using economically and environmentally viable materials. Here,we report reduced graphene oxide（r GO） and Prussian blue（PB） coated CFY, derived from a facile electrochemical process at room temperature for supercapacitor electrodes. The PB coated CFY and r GO coated CFY electrodes exhibit the excellent gravimetric capacitance of 339 F/g and 160.2 F/g, respectively, in aqueous KCl electrolyte in three-electrode cell configuration. When we coupled these electrodes inside the flexible plastic tube and separated by the electrolyte wet filter paper in order to construct flexible architecture, the resulting device delivers excellent specific energy of 52.1 Wh/kg and 26.5 Wh/kg with offering specific power of 3100 W/kg and 14400 W/kg respectively, under a wide operating potential of1.8 V with excellent rate capability. The device shows high tolerance towards bending, and retained its efficiency to the capacitance after being bent at an angle of 360° for 200 bending cycles.

关键词： Carbon fiber yarns Bendable supercapacitor Energy density Power density

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Decoherence Effects on multiplayer Cooperative Quantum Games

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Communications in Theoretical Physics 2011年第8期56卷 228-234页

作者： Salman Khan m.Ramzan m.khalid.Khan Department of Physics Quaid-i-Azam University

We study the behavior of cooperative multiplayer quantum games [Q. Chen, Y. Wang, J.T. Liu, and K.L. Wang, Phys. Lett. A 327 （2004） 98; A.P. Flitney and L.C.L. Hollenberg, Quantum Inf. Comput. 7 （2007） 111] in the presence of decoherence using different quantum channels such as amplitude damping, depolarizing and phase damping. It is seen that the outcomes of the games for the two damping channels with maximum values of decoherence reduce to same value. However, in comparison to phase damping channel, the payoffs of cooperators are strongly damped under the influence amplitude damping channel for the lower values of decoherence parameter. In the case of depolarizing channel, the game is a no-payoff game irrespective of the degree of entanglement in the initial state for the larger values of decoherence parameter. The deeoherenee gets the cooperators worse off.

关键词： multiplayer cooperative quantum games payoffs Nash equilibria

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High prevalence of bla_(CTX-m) in Enterobactcriaceac isolates from the Kingdom of Bahrain

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Asian Pacific Journal of Tropical medicine 2011年第12期4卷 937-940页

作者： khalid m Bindayna mariam murtadha Department of microbiology Immunology & Infectious DiseasesCollege of Medicine and Medical SciencesArabian Gulf UniversityKingdom of Bahrain Salmaniya medical Center Ministry of HealthKingdom of Bahrain

Objective:To determine the molecular epidemiology of extended-spectrumβ-lactamase （ESRL） by testing a cohort of clinical ESBL-producing bacterial isolates that were isolated in the Kingdom of ***:ESBL producing Enterabacleriaceae isolates（based on phenotypie tests） were collected from microbiology Laboratory ot the Salmaniya medical Complex,Bahrain between January-June *** susceptibility to a panel of antibiotics was performed and blaCTX-m genes were detected by multiplex ***:A total of 230 isolates（Escherichia coli.n=180:Klebsiella pneumoniae,n=50） were studied.98%were CTX-m *** Escherichia coli isolates.65（36.1%） harbored CTXm+TF.m combination and 68（37.8%） had CTX-m *** contrast,for Klebsiella pneumoniae isolates only 5（10.0%） harbored the CTX-m combination,and none had CTX-m *** blaCTX-m gene was found predominantly in urine isolates（n=145/230;63.0%）.Sensitivity to imipenem and nitrofurantoin was 100%and 60%.***-m carriage was associated with the resistance lo fluoroquinolones, trimethoprim-sulfamethoxazole and ***:Our study documentes high prevalence of CTX-m ESBL type among Escherichia call and Klebsiella from the Kingdom of *** apparent dissemination of CTX-m producers could represent a substantial barrier in the treatment of community-acquired *** use of extended-Spectrum cephalosporins. quinolones,and aminoglycosides is compromised,leaving carbapenems as the therapeutic option for severe infections caused by ESBL producers.

关键词： ESBL CTX-m Bahrain Escherichia coli Klebsiella pneumoniae

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mathematical and numerical analysis of thermal distribution in cancerous tissues under the local heat therapy

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International Journal of Biomathematics 2017年第7期10卷 157-166页

作者： m. A. Khanday khalid Nazir Department of mathematics University of Kashmir Srinagar 190006 India

The main purpose of this study is to investigate the thermal behavior of living tissues in the presence of spatial external heat source. An effort has been made to formulate the mathematical model to study the temperature distribution in in vivo tissues of the human body. The mathematical formulation is governed by bio-heat equation together with appropriate initial, boundary and interface conditions. The solution of the model was carried out using variational finite element method and computational simulations. The model describes the exchange of heat between the internal biological tissues and other surrounding media. The effect of external heat source under different conditions of atmospheric temperature and as a local hyperthermic method provides an impor- tant information to the temperature regulation in biological tissues under normal and malignant conditions. Thermal fluctuations at the targeted regions were obtained with respect to various time-dependent heating sources and scattering coefficients. The results obtained may be helpful for clinical purposes especially in the treatment of cancerous tumors through radiotherapy and other local hyperthermic approaches.

关键词： Variational finite element method Pennes' bio-heat equation local hyper-thermia tumor cells.

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