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Neutrosophic Rule-Based Identity Verification System Based on Handwritten Dynamic Signature Analysis

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Computers, Materials & Continua 2021年第11期69卷 2367-2385页

作者： amr Hefny Aboul Ella Hassanien Sameh H.Basha Department of Mathematics Faculty of ScienceCairo UniversityGiza12613Egypt Faculty of Computers and Information Cairo UniversityGiza12613Egypt

Identity verification using authenticity evaluation of handwritten signatures is an important *** have been several approaches for the verification of signatures using dynamics of the signing *** of these approaches extract only global *** the aim of capturing both dynamic global and local features,this paper introduces a novel model for verifying handwritten dynamic signatures using neutrosophic rule-based verification system(NRVS)and Genetic NRVS(GNRVS)*** neutrosophic Logic is structured to reflect multiple types of knowledge and relations among all features using three values:truth,indeterminacy,and *** three values are determined by neutrosophic membership *** proposed model also is able to deal with all features without the need to select from *** the GNRVS model,the neutrosophic rules are automatically chosen by Genetic *** performance of the proposed system is tested on the MCYT-Signature-100 *** terms of the accuracy,average error rate,false acceptance rate,and false rejection rate,the experimental results indicate that the proposed model has a significant advantage compared to different well-known models.

关键词： Biometrics online signature verification neutrosophic rule-based verification system

An update on penile reconstruction

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Asian Journal of Andrology 2011年第3期13卷 391-394,511页

作者： Giulio Garaffa amr Abdel Raheem David John Ralph St Peter＇s Andrology and the Institute Of Urology wig 6BJ London UK

Penile reconstruction still represents a formidable challenge for the urologist. In this review, the most recent advances in penile reconstruction after trauma, excision of benign and malignant disease and in patients... 详细信息

关键词： aphallia female-to-male sex reassignment surgery genital lymphoedema lichen sclerosus micropenis penile cancer penile trauma

Power frequency AC voltage measurement based on double wound Rogowski coil

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High Voltage 2017年第2期2卷 129-135页

作者： Mohamed E.Ibrahim amr M.Abd-Elhady High Voltage and Dielectric Materials Lab. Faculty of EngineeringMenoufia UniversityShebin El_Kom 32511Egypt

This study presents a technique for power frequency AC voltage *** proposed technique utilises a capacitor having a low capacitance in addition to a double wound Rogowski *** technique depends on capacitor current measurement using the double wound Rogowski *** voltage across the capacitor that connected in parallel with the system at which AC voltage is intended to be measured is *** proposed technique is experimentally evaluated by designing the measurement system and using a digital signal processing board for the reconstruction ***,the experimental results based on Rogowski coil measurements are compared with those obtained from reference ***,the obtained results validate the efficacy of the proposed technique in power frequency AC voltage measurement.

关键词： Rogowski double capacitance

Stress and deformation of rocket gas turbine disc under different loads using finite element modelling

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Propulsion and Power Research 2013年第1期2卷 38-49页

作者： amr Elhefny Guozhu Liangng School of Astronautics Beihang UniversityBeijing 100191China

Gas turbine discs have numerous applications in the aerospace industry,such as in liquid rocket *** this study,the stresses and deformations of a turbine disc were *** goal was to highlight the stress and deformation distribution to assist in the design of a disc as well as to demonstrate the importance of using finite element(FE)analysis in simulating an actual design ***,to present the real model,a twodimensional(2D)axisymmetric model for a non-uniform disc was analysed using FE *** stresses and deformations developed as a result of the disc operating conditions at high rotational speeds and thermal gradients were evaluated using two types of heat transfer modes-conduction and convection,taking into consideration the material behaviour at elevated *** FE model revealed that the weight of the disc should be reduced optimally by using a non-uniform thickness because this results in a huge increase in the applied *** greatest stresses in the disc result from the thermal load caused by conduction,and they are located at the centre of the *** addition,an analytical method was used to evaluate and predict the stresses along the disc,and it gave a good estimate of the stress values compared to the FE *** on this estimate,a parametric study was conducted for a range of rotational velocities under high temperature loads for a series of disc ***,it was found that this method can be used for the preliminary design of different turbines.

关键词： Rocket turbine Turbine disc Stress Deformation Finite element(FE)

Free radical scavenging activity of three different flowers-Hibiscus rosa-sinensis,Quisqualis indica and Senna surattensis

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Asian Pacific Journal of Tropical Biomedicine 2016年第9期6卷 771-777页

作者： Abd El-Moneim Mohamed radwan Afify Hazem Mohamed Mahmoud Hassan Biochemistry Department Faculty of AgricultureCairo University

Objective:To evaluate three flowers of Hibiscus rosa-sinensis(***-sinensis),Quisqualis indica(***) and Senna surattensis(***) for their antioxidant activity by different methods in addition to total phenolic,flavonoid and pigment ***:Antioxidant activity of water,ethanol and absolute ethanol extracts of three flowers; ***-sinensis,*** and *** was *** antioxidant activity was assessed by 1,1-diphenyl-2-picrylhydrazyl free radical scavenging activity,ferrous chelating activity,reducing power,nitric oxide scavenging activity,hydroxyl radical scavenging activity as well as total antioxidant *** flavonoids,total phenols and total pigments including chlorophylls and carotenoids were measured for the three ***:The results showed that the highest total antioxidant capacity at concentration of 500 mg/L was found in *** as 0.479 ± *** activity of ***,*** and *** flower extracts against 1,1-diphenyl-2-picrylhydrazyl radical showed the highest activity of(90.20 ± 0.29)% with 500 mg/*** screening of the three flowers extracts were carried out for alkaloids,flavonoids,saponins,tannins,steroids,glycosides,terpenoids,amino acid and ***-sinensis showed the total phenolic in water extract of(235.77 ± 14.31) mg/100 g,the other two flowers *** and *** had the total phenolic in ethanol extracts of(937.70 ± 25.06) and(850.30 ± 13.81) mg/100 g,*** the other hand total flavonoids were identified in absolute ethanol extracts in the three flowers[(32.83 ± 1.34),(49.24 ± 4.87) and(2.79 ± 0.23) mg/100 g,respectively].Conclusions:The extracts in the constituents of the three flowers could be used as additives as supplement fractions in foods.

关键词： Free radical Antioxidant Hibiscus rosa-sinensis Quisqualis indica Senna surattensis

A Robust Data Hiding Reversible Technique for Improving the Security in e-Health Care System

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Computer Modeling in Engineering & Sciences 2023年第1期134卷 201-219页

作者： Saima Kanwal Feng Tao Ahmad Almogren Ateeq Ur Rehman Rizwan Taj Ayman radwan School of Computer and Communication Lanzhou University of TechnologyLanzhou730050China Department of Computer Science College of Computer and Information SciencesKing Saud UniversityRiyadh11633Saudi Arabia Department of Electrical Engineering Government College UniversityLahore54000Pakistan Instituto de Telecomunicaoes and Universidade de Aveiro Aveiro3810-193Portugal

The authenticity and integrity of healthcare is the primary *** reversible watermarking schemes have been developed to improve the primary objective but increasing the quantity of embedding data leads to covering image distortion and visual quality resulting in data security detection.A trade-off between robustness,imperceptibility,and embedded capacity is difficult to achieve with current algorithms due to limitations in their *** this purpose insight,an improved reversibility watermarking methodology is proposed to maximize data embedding capacity and imperceptibility while maintaining data security as a primary concern.A key is generated by a random path with minimum bit flipping is selected in the 4 × 4 block to gain access to the data embedding *** random path's complex structure ensures data *** of various sizes(8 KB,16 KB,32 KB)are used to analyze image imperceptibility and evaluate quality *** proposed reversible watermarking methodology performance is tested under standard structures PSNR,SSIM,and *** results revealed that the MRI watermarked images are imperceptible,like the cover image when LSB is 3 bits *** proposed reversible watermarking methodology outperforms other related techniques in terms of average PSNR(49.29).Experiment results show that the suggested reversible watermarking method improves data embedding capacity and imperceptibility compared to existing state-of-the-art approaches.

关键词： Medical images security data hiding LSB matching hiding capacity imperceptibility

Effect of addition of chitosan to self-etching primer:antibacterial activity and push-out bond strength to radicular dentin

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The Journal of Biomedical Research 2012年第4期26卷 288-294页

作者： Shaymaa Elsaka amr Elnaghy Department of Dental Biomaterials Faculty of DentistryMansoura University Department of Conservative Dentistry and Endodontics Faculty of DentistryMansoura University

The purpose of this study was to evaluate the antibacterial activity of a modified self-etching primer incorporating chitosan and whether this modification affected the bond strength to radicular dentin.A modified self-etching primer was prepared by adding chitosan solutions at 0.03%,0.06%,0.12% and 0.25%（W/W） to RealSeal selfetching *** primer without chitosan was used as the *** antibacterial activity of the modified self-etching primer was evaluated using the direct contact test against Enterococcus *** bonding ability of the RealSeal system to radicular dentin was evaluated using the push-out bond strength *** modes of failure were examined under a *** were analyzed using analysis of variance（ANOVA） and Tukey’s test,with a P-value 〈 0.05 indicating statistical *** results showed that the antibacterial properties of the freshly prepared and aged modified self-etching primer incorporating chitosan exhibited potent antibacterial effect against Enterococcus faecalis compared with the unmodified *** RealSeal system with the aged modified self-etching primer incorporating chitosan showed no significant differences in the bond strength as compared with the control（P = 0.99）.The findings suggest that modified self-etching primer incorporating chitosan is a promising antibacterial primer which does not adversely affect the bond strength of the RealSeal system to radicular dentin.

关键词： Enterococcus faecalis antibacterial activity chitosan push-out primer radicular dentin

Ankle and foot mechanics in individuals with chronic ankle instability during shod walking and barefoot walking:A cross-sectional study

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Chinese Journal of Traumatology 2021年第3期24卷 174-179页

作者： Osama Ragaa Abdelraouf amr Almaz Abdel-aziem Department of Biomechanics Faculty of Physical TherapyCairo UniversityEgypt Department of Physical Therapy College of Applied Medical ScienceTaif UniversitySaudi Arabia

Purpose:This study evaluated the angular kinematic and moment of the ankle and foot during shod walking and barefoot walking in individuals with unilateral chronic ankle instability(CAI).Methods:Recreational soccer players with unilateral CAI were recruited for this cross sectional study conducted between January and August 2019.A total of 40 participants were screened for eligibility but only 31 met the inclusion criteria based on the methods of Delahunt et al and Gribble et *** for 3 participants not attending the evaluation session,28 participants were finally included.A three dimensional motion analysis system made up of ProReflex motion capture unit and an AMTIb Kistler force plate,embedded in the middle of nine meter walkway,were used to assess the ankle and foot angles and moment during shod walking and barefoot walking conditions.A Statistical Package for Social Sciences(version 20.0)was used to analyze ***:During shod walking,the ankle joint plantar-flexion range of motion(ROM)at 10%of the gait cycle(GC)and dorsiflexion ROM at 30%of the GC were significantly higher than those during barefoot walking for both feet(p=0.001,0.001,0.027,and 0.036 respectively).The inversion ROM during shod walking was significantly higher than that during barefoot walking for both feet at 10%and 30%of the GC(p=0.***.0.001,0.001,and 0.042 respectively).At 10%of the GC,the eversion moment was significantly higher between barefoot and shod walking for both feet(both p=0.001).At 30%of the GC,there was no significant difference between shod and barefoot walking plantar-flexion moment of both feet(p=0.975 and 0.763 respectively),and the eversion moment of both feet(p=0.116 and 0.101 respectively).Conclusion:At the early stance,shod walking increases the ankle plantar-flexion and foot inversion ROM,and decreases the eversion moment for both feet in subjects with unilateral ***,the foot wearing condition should be considered during evaluation of ankle and foot

关键词： Foot Gait Barefoot walking Shod walking Recurrent ankle sprain

Evaluation of suturless scleral fixation with posterior chamber foldable intraocular lens implantation

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International Journal of Ophthalmology(English edition) 2019年第8期12卷 1283-1289页

作者： Ahmed MBedda Hesham FElGoweini Ahmed MAbdelhadi amr MElhady Department of Ophthalmology Alexandria UniversityAlexandria11511Egypt Department of Ophthalmology the General OphthalmologyHospitalAlexandria21515Egypt

AIM: To assess the sutureless scleral fixation technique for posterior chamber foldable intraocular lens(PCIOL) implantation in aphakic eyes with insufficient or no capsular support. METHODS: A technique for sutureless intrascleral fixation of the haptics of a standard 3-piece PCIOL was used which ensures sutureless fixation by permanent incarceration of the haptics in a scleral tunnel parallel to the limbus. All patients were evaluated for preoperative status [visual acuity, refractive error, K readings, intraocular pressure(IOP) measurement, slit lamp examination, fundus examination and optical biometry], postoperative status and complications. Ultrasound biomicroscopy(UBM) was done for 10 cases to evaluate optic tilt. RESULTS: The study evaluated 42 eyes of 42 patients. The follow-up period was 6 mo. Improvement of best corrected visual acuity(BCVA) one line occurred in 10 cases(23.8%) and loss of one line in 3 cases(7.1%). Intraoperative complications included: haptic kink in 4 cases(9.5%), haptic breakage in 1 case(2.4%), haptic dislocation in 1 case(2.4%), haptic slippage in 3 cases(7.1%), IOL dislocation in 1 case(2.4%) and sclerotomy related bleeding in 1 case(2.4%). Postoperative complications included: transient mild vitreous hemorrhage in 3 cases(7.1%), choroidal detachment in 1 case(2.4%), cystoid macular edema(CME) in 1 case(2.4%), optic capture in 1 case(2.4%), subconjunctival haptic in 2 cases(4.8%), ocular hypotony in 4 cases(9.5%) and ocular hypertension in 1 case(2.4%). There were no cases of retinal detachment or endophthalmitis. UBM showed optic tilt in 3 cases(30%). CONCLUSION: Fixation of three-piece foldable IOL haptics in scleral tunnel parallel to the limbus-providedaxial stability and proper centration of the IOL with minimal or no tilt in most cases and a low complication rate during the follow up period which lasted 6 mo.

关键词： aphakia correction sutureless scleral fixation foldable three-piece intraocular lens