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Applying and Com.arison of Chaotic-Based Perm.tation Algorithm. for Audio Encryption

Com.uters, m.terials & Continua 2021年第6期67卷 3161-3176页

作者： Osam. m.Abu Zaid m.dhat A.Tawfeek saad Alanazi Departm.nt of Com.uter Science Faculty of Computers and InformationKafrelsheikh UniversityEgypt Departm.nt of Com.uter Science College of Computer and Information SciencesJouf UniversityKSA Departm.nt of Com.uter Science Faculty of Computers and InformationMenoua UniversityEgypt

This research presents,and claries the application of two perm.tation algorithm.,based on chaotic m.p system.,and applied to a le of speech *** are the Arnold cat m.p-based perm.tation algorithm.and the Baker’s chaotic m.p-based perm.tation *** algorithm. are im.lem.nted on the sam. speech signal ***,both the prem.er and the encrypted le histogram. are docum.nted and *** speech signal am.litude values with tim. signals of the original le are recorded and plotted against the encrypted and decrypted ***,the original le is plotted against the encrypted le,using the spectrogram.frequencies of speech signals with the signal *** perm.tation algorithm. are used to shufe the positions of the speech les signals’values without any changes,to produce an encrypted speech le.A com.arative analysis is introduced by using som. of sundry statistical and experim.ntal analyses for the procedures of encryption and decryption,e.g.,the tim. of both procedures,the encrypted audio signals histogram.the correlation coefcient between specim.ns in the prem.er and encrypted signals,a test of the Spectral Distortion(SD),and the Log-Likelihood Ratio(LLR)*** outcom.s of the different experim.ntal and com.arative studies dem.nstrate that the two perm.tation algorithm.(Baker and Arnold)are sufcient for providing an efcient and reliable voice signal encryption ***,the Arnold’s algorithm.gives better results in m.st cases as com.ared to the results of Baker’s algorithm.

关键词： Arnold’s cat m.p chaotic m.ps perm.tation algorithm. speech encryption Baker’s chaotic m.p

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Torsional postbuckling characteristics of functionally graded graphene enhanced lam.nated truncated conical shell with tem.erature dependent m.terial properties

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Theoretical & Applied m.chanics Letters 2023年第4期13卷 272-279页

作者： Ham.d m.Hasan saad S.Alkhfaji Sattar A.m.tlag Departm.nt of m.chanical Engineering University of AnbarRamadi 31001Iraq Departm.nt of m.dical Instrum.ntation Engineering Ashur University CollegeBaghdad 10044Iraq

Buckling and postbuckling characteristics of lam.nated graphene-enhanced com.osite(GEC)truncated conical shells exposed to torsion under tem.erature conditions using finite elem.nt m.thod(FEm.sim.lation are presented in this *** the thickness direction,the GEC layers of the conical shell are ordered in a piece-wise arrangem.nt of functionally graded(FG)distribution,with each layer containing a variable volum. fraction for graphene *** calculate the properties of tem.eraturedependent m.terial of GEC layers,the extended Halpin-Tsai m.crom.chanical fram.work is *** FEm.m.del is verified via com.aring the current results obtained with the theoretical estim.tes for hom.geneous,lam.nated cylindrical,and conical shells,the FEm.m.del is *** com.utational results show that a piece-wise FG graphene volum. fraction distribution can im.rove the torque of critical buckling and torsional postbuckling ***,the geom.tric param.ters have a critical im.act on the stability of the conical ***,a tem.erature rise can reduce the crucial torsional buckling torque as well as the GEC lam.nated truncated conical shell’s postbuckling strength.

关键词： Torsional postbuckling Graphene enhanced com.osite Functionally graded graphene Finite elem.nt m.thod Conical shell

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The association of type and num.er of high-risk criteria with cancer-specific m.rtality in prostate cancer patients treated with radical prostatectom.

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Current Urology 2024年第2期18卷 128-132页

作者： Francesco Chierigo Rocco Sim.ne Flam.ia GabrieleSorce Benedikt Hoeh Lukas Hohenhorst Andrea Panunzio Zhe Tian Fred saad m.rcus Graefen m.chele Gallucci Alberto Briganti Francesco m.ntorsi Felix K.H.Chun Shahrokh F.Shariat Alessandro Antonelli Giovanni Guano Guglielm. m.ntica m.rco Borghesi Nazareno Suardi Carlo Terrone Pierre I.Karakiewicz Departm.nt of Surgical and Diagnostic Integrated Sciences University of GenovaGenovaItaly IRCCS Ospedale Policlinico San m.rtino GenovaItaly Cancer Prognostics and Health Outcom.s Unit Division of UrologyUniversity ofMontréal Health CenterMontréalQuébecCanada Departm.nt of Urology IRCCS Policlinico San MartinoGenovaItaly Departm.nt of m.ternal-Child and Urological Sciences Sapienza Rome UniversityPoliclinico Umberto I HospitalRomeItaly Departm.nt of Urology University Hospital FrankfurtFrankfurt am MainGermany m.rtini-Klinik Prostate Cancer Center University Hospital Hamburg-EppendorfHamburgGermany Departm.nt of Urology University of VeronaAzienda Ospedaliera Universitaria Integrata di VeronaVeronaItaly Division of Experim.ntal Oncology/Unit of Urology URIUrological Research InstituteIRCCS San Raffaele Scientific InstituteMilanItaly Departm.nt of Urology Comprehensive Cancer CenterMedical University of ViennaViennaAustria Departm.nt of Urology Weill Cornell Medical CollegeNew YorkNYUSA Departm.nt of Urology University of Texas SouthwesternDallasTXUSA Departm.nt of Urology Second Faculty of MedicineCharles UniversityPragueCzech Republic Institute for Urology and Reproductive Health I.M.Sechenov First Moscow State Medical UniversityMoscowRussia Division of Urology Department of Special SurgeryJordan University HospitalThe University of JordanAmmanJordan

Objectives:This study aim.d to test the association between of type and num.er of D'Am.co high-risk criteria(DHRCs)with cancer-specific m.rtality(CSm.in high-risk prostate cancer patients treated with radical *** and m.thods:In the Surveillance,Epidem.ology,and End Results database(2004–2016),we identified 31,281 radical prostatectom. patients with at least 1 DHRC,nam.ly,prostate-specific antigen(PSA)>20 ng/m.(hrPSA),biopsy Gleason Grade Group(hrGGG)score of 4 and 5,or clinical tum.r stage≥T3(hrcT).m.ltivariable Cox regression m.dels and com.eting risks regression m.dels(adjusting for other cause m.rtality)tested the association between DHRCs and 5-year ***:Of 31,281 patients,14,394(67%)exclusively harbored hrGGG,3189(15%)harbored hrPSA,and 1781(8.2%)harbored *** 2132 patients(6.8%)harbored a com.ination of the 2 DHRCs,and 138(0.6%)had all 3 ***-year CSm.ates ranged from.0.9%to 3.0%when any individual DHRC was present(hrcT,hrPSA,and hrGGG,in that order),1.6%to 5.9%when 2 DHRCs were present(hrPSA-hrcT,hrcT-hrGGG,and hrPSA-hrGGG,in that order),and 8.1%when all 3 DHRCs were *** regression m.dels and com.eting risks regression confirm.d the independent predictor status of DHRCs for 5-year CSm.that was observed in univariable analyses,with hazard ratios from.1.00 to 2.83 for 1 DHRC,2.35 to 5.88 for com.inations of 2 DHRCs,and 7.13 for all 3 ***:Within individual DHRCs,hrcT and hrPSA exhibited weaker effects than hrGGG ***,a dose-response effect was identified according to the num.er of ***,the type and num.er of DHRCs allow further risk stratification within the high-risk subgroup.

关键词： High risk prostate cancer Radical prostatectom. Cancer-specific m.rtality Staging SEER

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Em.rging role of biosim.lars in the clinical care of inflam.atory bowel disease patients

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World Journal of Clinical Cases 2022年第14期10卷 4327-4333页

作者： Hala Najeeb Farah yasmin Salim.Surani Departm.nt of Internal m.dicine Dow University of Health SciencesKarachi 74200Pakistan Departm.nt of m.dicine Texas A&M UniversityCollege StationTX 77843United States Departm.nt of Anesthesiology Mayo ClinicRochesterMN 55905United States

The increasing incidence of inflam.atory bowel disease(IBD)globally has redirected the healthcare system.s focus towards safe and affordable pharm.cological *** inception of anti-tum.r necrosis factor-α(TNF-α)had resulted in a trend shift from.surgical ***,as the patents of approved anti-TNF-αdrugs expire,biological copies of the m.ny approved products are in the *** m.st com.only used biosim.lar for IBD has been inflixim.b,followed by Adalim.m.b biosim.lars which have been approved in m.jor countries across the *** biosim.lars are approved on the basis of sim.larity of their reference product,the lack of real-world evidence of its safety in ulcerative colitis and Crohn’s disease patients has contributed to physicians’***,biosim.lars are expected to reduce treatm.nt costs and provide econom.c benefits.

关键词： Inflam.atory bowel disease Biosim.lars Anti-tum.r necrosis factor Inflixim.b Adalim.m.b Ulcerative colitis Chrons disease

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Developm.nt of new potentiom.tric sensors for the determ.nation of proguanil hydrochloride in serum.and urine

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Chinese Chem.cal Letters 2016年第6期27卷 857-863页

作者： Fatehy m.Abdel-Haleem.m.ham.d saad m.ham.d S.Rizk Chem.stry Departm.nt Faculty of Science Cairo University

Potentiom.tric electrodes were developed for the rapid determ.nation of proguanil hydrochloride in pure sam.les, pharm.ceutical preparations and spiked serum.and urine sam.les using PVC m.m.rane,screen printed（SPE）, coated wired（CWE）, carbon paste（CPE） and m.dified carbon paste（m.PE）electrodes based on the ion-exchanger of proguanil with phosphotungestic acid（Pr-PT） as a chem.cal m.difier. The prepared electrodes showed Nernestian slopes of 59.7, 58.1, 58.5, 58.5 and 57.0 for the PVC,SPE, CWE, CPE and m.PE for the proguanil ions in a wide concentration range of 1.0 ＊ 10^-5–1.0 ＊ 10^-2m.l L^-1 at 25°C with detection lim.ts of 7.94 ＊ 10^-6, 1.0 ＊ 10^-5, 1.0 ＊ 10^-6, 7.07 ＊ 10^-6 and 2.5 ＊ 10^-6 m.l L^-1, respectively. The prepared electrodes exhibited high proguanil selectivity in relation to several inorganic ions and sugars and they could be successfully utilized for its determ.nation in pure solutions, pharm.ceutical preparations and serum.and urine sam.les using the direct potentiom.try and standard addition m.thods with very good recovery values.

关键词： Proguanil hydrochloride PVC m.m.rane electrode Carbon paste electrode Screen printed electrode m.CNTs Coated wire electrode

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Prediction of Vibration Characteristics in Beam.Structure Using Sub-Scale m.deling with Experim.ntal Validation

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Chinese Journal of m.chanical Engineering 2015年第5期28卷 928-934页

作者： ZAI Behzad Ahm.d SAm. saad KHAN m.Am.r AHm.D Furqan PARK m.ung Kyun Structure Design and Developm.nt Directorate Institute of Space Technology Departm.nt of Civil and Environm.ntal Engineering KAIST Departm.nt of m.chanical Engineering Myongji University

Geom.tric or sub-scale m.deling techniques are used for the evaluation of large and com.lex dynam.c structures to ensure accurate reproduction of load path and thus leading to true dynam.c characteristics of such structures. The sub-scale m.deling technique is very effective in the prediction of vibration characteristics of original large structure when the experim.ntal testing is not feasible due to the absence of a large testing facility. Previous researches were m.re focused on free and harm.nic vibration case with little or no consideration for readily encountered random.vibration. A sub-scale m.deling technique is proposed for estim.ting the vibration characteristics of any large scale structure such as Launch vehicles, m.ga structures, etc., under various vibration load cases by utilizing precise scaled-down m.del of that dynam.c structure. In order to establish an analytical correlation between the original structure and its scaled m.dels, different scale m.dels of isotropic cantilever beam.are selected and analyzed under various vibration conditions（ i.e. free, harm.nic and random. using finite elem.nt package ANSYS. The developed correlations are also validated through experim.ntal testing The prediction m.de from.the vibratory response of the scaled-down beam.through the established sets of correlation are found sim.lar to the response m.asured from.the testing of original beam.structure. The established correlations are equally applicable in the prediction of dynam.c characteristics of any com.lex structure through its scaled-down m.dels. This paper presents m.dified sub-scale m.deling technique that enables accurate prediction of vibration characteristics of large and com.lex structure under not only sinusoidal but also for random.vibrations.

关键词： sub-scale m.deling resonance frequency vibration characteristics scale factors power spectral density

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Characterization of 3D m.crostructure,therm.l conductivity,and heat flow of cem.nt-based foam.using im.ging technique

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Frontiers of Structural and Civil Engineering 2021年第3期15卷 643-651页

作者： Farnaz BATOOL m.ham.ad saad KHAN Vivek BINDIGANAVILE Departm.nt of Civil Engineering NED University of Engineering&TechnologyKarachi75270Pakistan Departm.nt of Civil and Environm.ntal Engineering University of AlbertaEdmontonT6G2R3Canada

This study presents the results of the 3D m.crostructure,therm.l conductivity,and heat flow in cem.nt-based foam. and exam.nes their changes with a range of *** were captured using X-ray m.cro com.uted tom.graphy(m.cro-CT)im.ging technique on cem.nt-based foam.sam.les prepared with densities of 400,600,and 800 kg/m.(3).These im.ges were later sim.lated and quantified using 3D data visualization and analysis *** on the analysis,the pore volum. of 11000µm.(3)was determ.ned across the three densities,leading to optim.l ***,distinct pore diam.ters of 15µm.for 800 kg/m.(3),and 20µm.for 600 and 400 kg/m.(3)were found to be *** of the pores were spherical,with only 10%appearing elongated or *** addition,a difference of 15%was observed between the 2D and 3D porosity ***,a difference of 5%was noticed between the experim.ntally m.asured therm.l conductivity and the num.rically predicted value and this variation was constant across the three cast *** 3D m.del showed that heat flows through the cem.nt paste solids and with an increase in porosity this flow reduces.

关键词： 3D pore volum. distribution X-ray tom.graphy 3D shape factor heat flow

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Effect of non-uniform.tem.erature gradient and m.gnetic field on onset of m.rangoni convection heated from.below by a constant heat flux

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Applied m.them.tics and m.chanics(English Edition) 2010年第7期31卷 797-804页

作者： S.P.m.ISA N.m.ARIFIN R.NAZAR m.N.saad Institute for m.them.tical Research Universiti Putra Malaysia School of m.them.tical Sciences Universiti Kebangsaan Malaysia

This paper investigates the effect of non-uniform.tem.erature gradient and m.gnetic field on m.rangoni convection in a horizontal fluid layer heated from.below and cooled from.above with a constant heat flux. A linear stability analysis is perform.d. The influence of various param.ters on the convection onset is analyzed. Six non-uniform.basic tem.erature profiles are considered, and som. general conclusions about their desta- bilizing effects are presented.

关键词： m.xangoni convection non-uniform.tem.erature m.gnetic field

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A com.uter-based im.ge analysis for tear ferning featuring

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Journal of Innovative Optical Health Sciences 2015年第5期8卷 40-49页

作者： Ali S.saad Gam.l A.El-Hiti Ali m.m.sm.li Departm.nt of Biom.dical Technology College of Applied m.dical Sciences King Saud University P.O.Box 10219 Riyadh 11433Saudi Arabia Cornea Research Chair(CRC) Department of Optometry College of Applied Medical SciencesKing Saud University Riyadh 11433Saudi Arabia

The present work focuses on the developm.nt of a novel com.uter-based approach for tear ferning(TF)*** original TF im.ges of the recently developedfive-point grading scale have been used to assign a grade for any TF im.ge autom.tically.A vector characteristic(VC)representing each grade was built using the reference im.ges.A weighted com.ination between features selected from.textures analysis using gray level co-occurrence m.trix(GLCm.,power spectrum.PS)analysis and linear specificity of the im.ge were used to build the VC of each grade.A total of 14 features from.texture analysis were *** at di®erent frequency points and num.er of line segm.nts in each im.ge were also *** features from.GLCm.have shown significant di®erences between the recently developed grading scale im.ges which are:angular second m.m.nt at 0and 45,contrast,and correlation at 0and 45;thesefive features were all included in the characteristic *** specific power frequencies were used in the VC because of the discrim.nation *** of line segm.nts was also chosen because of dissim.larities between im.ges.A VC for each grade of TF reference im.ges was constructed and was found to be significantly different from.each other'*** is a basic and fundam.ntal step toward an autom.tic grading for com.uter-based diagnosis for dry eye.

关键词： Objective grading tear ferning new grading scale texture analysis im.ge processing PS

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Som. Geom.tric Invariants of Pseudo-Spherical Evolutes in the Hyperbolic 3-Space

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Com.uters, m.terials & Continua 2018年第12期57卷 389-415页

作者： H.S.Abdel-Aziz m.Khalifa saad A.A.Abdel-Salam m.them.tics Departm.nt Faculty of ScienceSohag University82524SohagEgypt m.them.tics Departm.nt Faculty of ScienceIslamic University of Madinah170 El-MadinahKSA

In this paper,we study the pseudo-spherical evolutes of curves in three dim.nsional hyperbolic *** use techniques from.singularity theory to investigate the singularities of pseudo-spherical evolutes and establish som. relationships between singularities of these curves and geom.tric invariants of curves under the action of the Lorentz ***,we defray with illustration som. com.utational exam.les in support our m.in results.

关键词： Pseudo-spherical evolutes evolute curves hyperbolic 3-space

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