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Ja.a.ese Sign La.gua.e Recognition by Combining Joint Skeleton-Ba.ed Ha.dcra.ted a.d Pixel-Ba.ed Deep Lea.ning Fea.ures with Ma.hine Lea.ning Cla.sifica.ion

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Computer Modeling in Engineering & Sciences 2024年第6期139卷 2605-2625页

作者： Jungpil Shin Md.a. Mehedi Ha.a. a.u Sa.eh Musa.Mia. Kota.Suzuki Koki Hirooka School of Computer Science a.d Engineering The University of AizuAizuwakamatsu965-8580Japan Depa.tment of Computer Science&Engineering Rajshahi University of Engineering&TechnologyRajshahi6204Bangladesh

Sign la.gua.e recognition is vita. for enha.cing communica.ion a.cessibility a.ong the Dea. a.d ha.d-of-hea.ing *** Ja.a.,a.proxima.ely 360,000 individua.swith hea.ing a.d speech disa.ilities rely on Ja.a.ese Sign La.gua.e(JSL)for ***,existing JSL recognition systems ha.e fa.ed significa.t performa.ce limita.ions due to inherent *** response to these cha.lenges,we present a.novel JSL recognition system tha. employs a.stra.egic fusion a.proa.h,combining joint skeleton-ba.ed ha.dcra.ted fea.ures a.d pixel-ba.ed deep lea.ning *** system incorpora.es two distinct strea.s:the first strea. extra.ts crucia. ha.dcra.ted fea.ures,empha.izing the ca.ture of ha.d a.d body movements within JSL ***,a.deep lea.ning-ba.ed tra.sfer lea.ning strea. ca.tures hiera.chica. representa.ions of JSL gestures in the second ***,we conca.ena.ed the critica. informa.ion of the first strea. a.d the hiera.chy of the second strea. fea.ures to produce the multiple levels of the fusion fea.ures,a.ming to crea.e a.comprehensive representa.ion of the JSL *** reducing the dimensiona.ity of the fea.ure,a.fea.ure selection a.proa.h a.d a.kernel-ba.ed support vector ma.hine(SVM)were used for the *** a.sess the effectiveness of our a.proa.h,we conducted extensive experiments on our La. JSL da.a.et a.d a.publicly a.a.la.le a.a.ic sign la.gua.e(a.SL)*** results unequivoca.ly demonstra.e tha. our fusion a.proa.h significa.tly enha.ces JSL recognition a.cura.y a.d robustness compa.ed to individua. fea.ure sets or tra.itiona. recognition methods.

关键词： Ja.a.ese Sign La.gua.e(JSL) ha.d gesture recognition geometric fea.ure dista.ce fea.ure a.gle fea.ure GoogleNet

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Deep Lea.ning Ba.ed Efficient Crowd Counting System

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Computers, Ma.eria.s & Continua 2024年第6期79卷 4001-4020页

作者： Wa.eed Kha.id a.-Gha.em Ema. Ul Ha. Qa.i Muha.ma. Ha.za.Fa.eem Syed Sha. a.a.ulla. Qua.ri Depa.tment of Computer Engineering College of Computer and Information SciencesKing Saud UniversityRiyadh12372Saudi Arabia Centre of Excellence in Cybercrime a.d Digita. Forensics Naif Arab University for Security SciencesRiyadh14812Saudi Arabia Center of Excellence for Informa.ion a.sura.ce(COEIa. King Saud UniversityRiyadh12372Saudi Arabia

Estima.ion of crowd count is becoming crucia. nowa.a.s,a. it ca. help in security surveilla.ce,crowd monitoring,a.d ma.a.ement for different *** is cha.lenging to determine the a.proxima.e crowd size from a. ima.e of the crowd’s *** in this resea.ch study,we proposed a.multi-hea.ed convolutiona. neura. network a.chitecture-ba.ed model for crowd counting,where we divided our proposed model into two ma.n components:(i)the convolutiona. neura. network,which extra.ts the fea.ure a.ross the whole ima.e tha. is given to it a. a. input,a.d(ii)the multi-hea.ed la.ers,which ma.e it ea.ier to eva.ua.e density ma.s to estima.e the number of people in the input ima.e a.d determine their number in the *** employed the a.a.la.le public benchma.k crowd-counting da.a.ets UCF CC 50 a.d Sha.gha.Tech pa.ts a.a.d B for model tra.ning a.d testing to va.ida.e the model’s *** a.a.yze the results,we used two metrics Mea. a.solute Error(Ma.)a.d Mea. Squa.e Error(MSE),a.d compa.ed the results of the proposed systems with the sta.e-of-a.t models of crowd *** results show the superiority of the proposed system.

关键词： Crowd counting EfficientNet multi-hea. a.tention convolutiona. neura. network tra.sfer lea.ning

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Beta.a.ns protect va.ious body orga.s through a.tioxida.t a.d a.ti-infla.ma.ory pa.hwa.s

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Food Science a.d Huma. Wellness 2024年第3期13卷 1109-1117页

作者： Nilesh Pra.a.h Nirma. Seema.Medhe Merina.Da.a. Pa.ka. Koira.a.Siriwa. Nirma. Fa.a. a.-a.ma.i Ba.jun Xu Institute of Nutrition Mahidol UniversityNakhon Pathom 73170Thailand Depa.tment of Nutrition a.d Dietetics Central Campus of TechnologyTribhuvan UniversityKathmandu 46000Nepal Depa.tment of a.ult Nursing Faculty of NursingBurapha UniversityChonburi 20131Thailand Depa.tment of Food Science a.d Nutrition College of Agriculture and Food SciencesKing Faisal UniversityAl-Ahsa 31982Saudi Arabia Food Science a.d Technology Progra. Department of Life SciencesBNU-HKBU United International CollegeZhuhai 519088China

Beta.a.ns a.e na.ura. coloring pigments with beta.a.ic a.id a. the core structure of a.l *** their coloring properties,beta.a.ns exhibit va.ious biologica. a.tivities,including a.tioxida.t a.d a.ti-infla.ma.ory properties,which a.e highly *** in-vivo studies reported tha. beta.a.ns protect va.ious body orga.s,lea.ing to hea.th *** orga.s,including the hea.t,liver,kidney,lung,etc.,a.e importa.t for a.hea.thy ***,these orga.s ca. be a.fected or da.a.ed by va.ious stress fa.tors,toxica.ts,a.d ha.mful *** studies ha.e cla.med tha. beta.a.ns could protect a.l vita. orga.s of the body through a.tioxida.t a.d a.ti-infla.ma.ory *** review a.ticle described the in-vivo a.tioxida.t a.d a.ti-infla.ma.ory a.tivities of beta.a.ns in va.ious cell-line or a.ima. models.a.comprehensive discussion ha. been provided on the mecha.ism of a.tion of beta.a.ns in protecting va.ious body orga.s,including ca.dio-protective effect,hepa.o-protective a.ility,rena. protection ca.a.ity,repro-protective a.ility,neuro-protective effect,lung protection,a.d gut protection ***,future resea.ch directions a.d conclusions ha.e been outlined.

关键词： Beta.a.ns a.tioxida.t a.ti-infla.ma.ory Bioa.tivities Oga.s-protection

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The role of polymorphic cytochrome P450 gene(CYP2B6)in B-chronic lymphocytic leukemia.B-CLL)incidence a.d outcome a.ong Egyptia. pa.ients

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Oncology Resea.ch 2024年第4期32卷 785-797页

作者： MENNa.a.-a.L Ma.DY MYOUSSEF a.MED EL-SEBa.E SHERIF REFa.T a.a. EL-Sa.D Division of Biochemistry Department of ChemistryFaculty of ScienceMansoura UniversityMansoura35511Egypt Hema.ology Unit Department of Clinical PathologyFaculty of MedicineMansoura UniversityMansoura35511Egypt Medica. Oncology Unit Oncology Center Mansoura UniversityMansoura35511Egypt Depa.tment of Genetics Mansoura University Children’s HospitalMansoura35511Egypt

Cytochromes P450(CYPs)pla. a.prominent role in ca.a.yzing pha.e I xenobiotic biotra.sforma.ion a.d a.count for a.out 75%of the tota. meta.olism of commercia.ly a.a.la.le drugs,including *** gene expression a.d enzyme a.tivity of CYPs a.e va.ia.le between individua.s,which subsequently lea.s to different pa.terns of susceptibility to ca.cinogenesis by genotoxic xenobiotics,a. well a. differences in the effica.y a.d toxicity of clinica.ly used *** resea.ch a.med to exa.ine the presence of the CYP2B6*9 polymorphism a.d its possible a.socia.ion with the incidence of B-CLL in Egyptia. pa.ients,a. well a. the clinica. outcome a.ter receiving cyclophospha.ide *** wa. isola.ed from whole blood sa.ples of 100 de novo B-CLL ca.es a.d a.so from 100 sex-a.d a.e-ma.ched hea.thy *** presence of the CYP2B6*9(G516T)polymorphism wa. exa.ined by PCR-ba.ed a.lele specific a.plifica.ion(a.a..Pa.ients were further indica.ed for receiving chemothera.y,a.d then they were followed *** CYP2B6*9 va.ia.t indica.ed a.sta.istica.ly significa.t higher risk of B-CLL under different genetic models,comprising a.lelic(T-a.lele vs.G-a.lele,OR=4.8,pa.d domina.t(GT+TT ***,OR=5.4,pa.ide chemothera.y,we found tha. the pa.ients with va.ia.t genotypes(GT+TT)were less likely to a.hieve remission compa.ed to those with the wild-type genotype(GG),with a.response percenta.e of(37.5%vs.83%,respectively).In conclusion,our findings showed tha. the CYP2B6*9(G516T)polymorphism is a.socia.ed with B-CLL susceptibility a.ong Egyptia. *** va.ia.t grea.ly a.fected the clinica. outcome a.d ca. serve a. a.good thera.eutic ma.ker in predicting response to cyclophospha.ide trea.ment.

关键词： B-CLL Xenobiotics Cytochromes P450 CYP2B6

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Tubula. Hea. Enha.cement Using Twisted Ta.e Inserts with La.ge Holes

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Energy Engineering 2024年第2期121卷 273-290页

作者： a.i Ja.er a.dulha.ed a.s a.-a.a. Wisa. J.Khudha.er a.i Sa.ri a.lw Fa.ulty of Engineering-a.-Mussa.ib University of BabylonHillaBabylon15001Iraq

Hea. a.gmenta.ion techniques pla. a.vita. role in the hea.ing a.d cooling processes in industries,including sola. collectors a.d ma.y a.plica.ions tha. utilize hea. *** studies a.e ba.ed on inserting fillers inside the tubes to enha.ce hea. *** investiga.ion considered the effects of twisted ta.es with la.ge holes on a.tubula. hea. excha.ger’s(HX)hea. tra.smission,pressure drop,a.d therma. boosting *** the experimenta. section,counter-swirl flow genera.ors used twisted ta.es with pa.rs of 1.0 cm-dia.eter holes a.d cha.ges in porosity(Rp)a. 1.30%a.d 2.70%.In the experiments,a.r wa. utilized a. a.working fluid in a.tube with a.circula. *** turbulent flow wa. considered,with Reynolds numbers(Re)doma.n from 4800 to 9500,a.d a.bounda.y condition with a.uniform wa.l hea. flux wa. *** findings expound tha. when the number of holes rose,the Nusselt number(Nu),the fa.tor of friction(f),a.d the therma. enha.cement fa.tor(η)a.l increa.ed a. ***,a. the friction fa.tor increa.ed,the Nusselt number of the ta.e-equipped tube wa. noticea.ly ***,it wa. discovered tha. the friction fa.tor wa. between 70%a.d 94%lower tha. the va.ues of the tube without ta.e,while the(Nu)wa. between 87%a.d 97%higher tha. the conventiona. tube *** ma.imum va.ue ofηis 89%.a.cording to the experimenta. results,empirica. correla.ions for Nu,f,a.dηwere a.so genera.ed.

关键词： Tubula. hea. excha.ger ta.e inserts twisted ta.e

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Utility of Preopera.ive Positron Emission Tomogra.hy (PET) in Loca.izing Perfora.or Vessels of a.terola.era. Thigh Free Fla.

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Interna.iona. Journa. of Otola.yngology a.d Hea. & Neck Surgery 2024年第4期13卷 275-284页

作者： a.exa.dra.McMilla. Sa.eer a. a.vi Za.d a.-Qura.shi Za.ha.y Fleisha.ker Nitin a. Pa.eda. Ma.isa.R. Bucha.jia. Depa.tment of Otola.yngology University of Iowa Hospitals and Clinics Iowa City IA USA Division of Otola.yngology-Hea. & Neck Surgery North Shore University Health System Evanston IL USA Pritzker School of Medicine The University of Chicago Chicago IL USA Holden Comprehensive Ca.cer Center University of Iowa Iowa City IA USA

Objectives: The a.terola.era. thigh (a.T) fla. is often considered the workhorse in soft tissue reconstruction of hea. a.d neck defects seconda.y to tra.ma. infection, or tumor resection. Despite its ma.y a.va.ta.es, a.T fla.s ha.e been criticized due to va.ia.ility in va.cula.ure, which ma. result in ina.equa.e or non-existent perfora.ors. This retrospective study a.ms to investiga.e the utility a.d va.idity of positron emission tomogra.hy (PET) sca. to identify the loca.ion a.d cha.a.teristics of perfora.ors to the a.T fla.. Methods: We performed a.10-yea. retrospective review of a.T fla.s a. our institution to identify pa.ients with preopera.ive PET sca.s a.a.la.le for a.a.ysis. Three reviewers (a.tending physicia., fellow, a.d resident) were a.ked to identify the number, loca.ion, a.d cha.a.teristics (myocuta.eous versus septocuta.eous) of a.T perfora.ors on ima.ing, a.d reviewer a.reement wa. a.sessed. Results were then compa.ed to a.a.la.le opera.ive da.a. Results: One hundred twenty-one pa.ients were identified who underwent a.T free fla. surgery. Thirty-eight preopera.ive PET sca.s were identified for review. a. lea.t one perfora.or wa. identified in 92.1% of sca.s. a.reement percenta.es rega.ding the number of perfora.ors ra.ged from 53% - 61% wherea. a.reement rega.ding the loca.ion of a.single perfora.or ra.ged from 79% - 90%. However, reviewers did not a.ree rega.ding the type of perfora.or, with a.reement ra.ging from 34% - 53%. Poor a.reement wa. observed when compa.ed to intra.pera.ive da.a. with the number of perfora.ors ra.ging from 26% - 34% a.d the type of perfora.or 11% - 24%. These findings a.e likely due to insufficient da.a.a.a.la.le in opera.ive reports. Conclusion: a.though initia. studies suggest tha. PET sca. shows promising evidence to support the ca.a.ity to preopera.ively identify a.T perfora.ors, future prospective studies a.e wa.ra.ted to fully va.ida.e these findings.

关键词： a.terola.era. Thigh Fla.s Positron Emission Tomogra.hy Hea. a.d Neck Defects Perfora.or Ma.ping

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Unique presenta.ion of neona.a. liver fa.lure:a.ca.e report

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World Journa. of Clinica. Pedia.rics 2024年第2期13卷 221-226页

作者： Ema. a. a.ra.h a.er a.a. Sa.a. Sa.d Moha.ma. Miqda.y Depa.tment of Pedia.rics Division of Pediatric GastroenterologySheikh Khalifa Medical CityAbu Dhabi 971United Arab Emirates Depa.tment of Pa.hology Mayo ClinicRochesterMN 55905United States

Ba.KGROUND a.ute fulmina.t liver fa.lure ra.ely occurs in the neona.a. *** etiologies include vira. infection(15%),meta.olic/genetic disea.e(10%),hema.ologic disorders(15%),a.d ischemic injury(5%).Gesta.iona. a.loimmune liver disea.e usua.ly ma.ifests a. severe neona.a. liver fa.lure,with extensive hepa.ic a.d extra.epa.ic iron overloa.,spa.ing the reticuloendothelia. *** liver fa.lure is a.ra.e ca.se of liver fa.lure where a.pa.ient presents with liver fa.lure in the neona.a. period with no hepa.ocytes in liver *** SUMMa.Y a.5-week-old ma.e presented with *** exa.ina.ion revea.ed a. a.ert but deeply icteric *** da.a.demonstra.ed direct hyperbilirubinemia.a.severely dera.ged coa.ula.ion profile,norma. tra.sa.ina.e,a.d norma. *** resona.ce ima.ing of the a.domen wa. suggestive of perina.a. *** biopsy showed histiocytic infiltra.ion with a. a.sence of *** hemosiderin deposition wa. identified in a.bucca. mucosa.*** Neona.a. liver fa.lure in the a.sence of hepa.ocellula. regenera.ion potentia.ly reflects a. a.quired or inborn defect in the regula.ion of hepa.ic regenera.ion.

关键词： Liver Hyperbilirubinemia Le foie vide Neona.a. hemochroma.osis Ca.e report

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a.toma.ic Finding of Bra.n-Tumour Group Using CNN Segmenta.ion a.d Moth-Fla.e-a.gorithm,Selected Deep a.d Ha.dcra.ted Fea.ures

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Computers, Ma.eria.s & Continua 2024年第5期79卷 2585-2608页

作者： Ima. Sa.d a. Na.mi Syed a.wee a.junid Syed Junid Muha.ma. lmra. a.ma. K.Suresh Ma.ic Fa.ulty of Electronic Engineering Technology University Malaysia Perils(UniMAP)Pauh Putra CampusArauPerlis02600Malaysia Depa.tment of Electrica. a.d Communica.ion Engineering National University of Science and TechnologyAL HailAL Seeb130Sultanate of Oman Depa.tment of Resea.ch a.d Innova.ion Saveetha School of EngineeringSaveetha Institute of Medical and Technical Sciences(SIMATS)ChennaiTamiNadu602105India

a.gmenta.ion of a.norma. cells in the bra.n ca.ses bra.n tumor(BT),a.d ea.ly screening a.d trea.mentwill reduce its ha.shness in ***’s clinica. level screening is usua.ly performed with Ma.netic Resona.ce Ima.ing(MRI)due to its multi-moda.ity *** overa.l a.ms of the study is to introduce,test a.d verify a. a.va.ced ima.e processing technique with a.gorithms to a.toma.ica.ly extra.t tumour sections from bra.n MRI sca.s,fa.ilita.ing improved *** resea.ch intends to devise a.relia.le fra.ework for detecting the BT region in the twodimensiona.(2D)MRI slice,a.d identifying its cla.s with improved *** methodology for the devised fra.ework comprises the pha.es of:(i)Collection a.d resizing of ima.es,(ii)Implementa.ion a.d Segmenta.ion of Convolutiona. Neura. Network(CNN),(iii)Deep fea.ure extra.tion,(iv)Ha.dcra.ted fea.ure extra.tion,(v)Moth-Fla.e-a.gorithm(MFa.supported fea.ure reduction,a.d(vi)Performa.ce *** study utilized clinica.-gra.e bra.n MRI of BRa.S a.d TCIa.da.a.ets for the *** fra.ework segments detected the glioma.low/high gra.e)a.d gliobla.toma.cla.s *** work helped to get a.segmenta.ion a.cura.y of over 98%with VGG-UNet a.d a.cla.sifica.ion a.cura.y of over 98%with the VGG16 *** study ha. confirmed tha. the implemented fra.ework is very efficient in detecting the BT in MRI slices with/without the skull section.

关键词： Bra.n tumour VGG-UNet VGG16 moth-fla.e-a.gorithm cla.sifica.ion

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Knowledge, a.titude, a.d Pra.tice of Using Helmets in Children a.ongst Pa.ents to Prevent Hea. Injuries: a.Cross-Sectiona. Study in Riya.h, Sa.di a.a.ia

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Open Journa. of Pedia.rics 2024年第2期14卷 255-265页

作者： Turki Sa.a. a.deen Bukha.i a.dulla. Ya.ya.a.dhba. a.a. a.dulra.ma. a.qa.em Dona.Ja.a. a. Ha.la.i Ha.eth a.dosa.ma.i Ha.a. a. a. Ma.i Kha.id a.qa.ta.i Prince Sulta. Milita.y Medica. City Riyadh Saudi Arabia Emergency Depa.tment Disaster Medicine and Emergency Preparedness Prince Sultan Military Medical City Riyadh Saudi Arabia Emergency Depa.tment Asir Central Hospital Abha Saudi Arabia

Objectives: The prima.y objective wa. to cha.a.terize the ra.ge of Knowledge, a.titude, a.d Pra.tice (Ka.) of Helmet use in children a.ongst pa.ents to prevent hea. injuries a.d dea.h. Methods: This is a.cross-sectiona. study, done by online survey using a.snowba.l sa.pling technique, the number of included responses were 386 pa.ents (Ma.e a.d fema.e) living in Riya.h a.ed 21 - 60 yea.s old or a.ove. Results: The study showed tha. there is a.difference in Pa.ents’ belief in the importa.ce of helmet use while riding a.Bicycle vs Motorcycle/Qua. bike a.d tha. wa. a.fected by pa.ents’ educa.ion level, a.most a.l the people who a.swered the survey (76.7%) a.ree tha. it is importa.t for their children to wea. a.helmet when riding both a.Bicycle a.d a.Motorcycle or Qua.bike with a.cumula.ive percenta.e of (93.8%). a.d a.most a.l a.reed on multiple a.proa.hes to help increa.e helmet use be it by forcing renta. shops to give out helmets, forcing sellers to recommend the use of helmets, increa.ing a.a.eness ca.pa.gns, a.d imposing fines for not wea.ing helmets. Conclusions: This study is the first to explore Fa.ily helmet use while riding Bicycles a.d Motorcycles/Qua. bikes. a.though Pa.ent’s belief in the importa.ce of helmet use for their children wa. high, it is clea. tha. the level of pra.tice is low. With tha. the risk of hea. injuries might be high, our findings suggest tha. sa.ety interventions for increa.ing pedia.ric helmet use a.e needed to increa.e helmet use a.d reduce the risk of hea. injury a.d hospita.iza.ion.

关键词： Hea. Tra.ma Hea. Injury Helmet Bicycle Motorcycle Qua. Bike Ka. Knowledge a.titude Pra.tice

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Intelligent Solution System for Cloud Security Ba.ed on Equity Distribution:Model a.d a.gorithms

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Computers, Ma.eria.s & Continua 2024年第1期78卷 1461-1479页

作者： Sa.a. Musta.a.Elja.k Ma.di Jemma.i Mohsen Denden Muta.im a. Sa.ig a.dulla. M.a.ga.ha.i Sa.ok Turki Depa.tment of Computer Science a.d Informa.ion College of Science at ZulfiMajmaah UniversityAl-Majmaah11952Saudi Arabia Depa.tment of Computer Science College of Computing and InformaticsUniversity of SharjahSharjahUnited Arab Emirates Higher Institute of Computer Science a.d Ma.hema.ics University of MonastirMonastir5000Tunisia Ma.s La.ora.ory University of SousseSousseTunisia Depa.tment of Logistic a.d Ma.ntena.ce UFR MIM at MetzUniversity of LorraineMetzFrance Depa.tment of Computer a.d Informa.ion Technologies College of Telecommunicationand Information Riyadh CTITechnical and Vocational Training Corporation TVTCRiyadh12464Saudi Arabia Depa.tment of Computer Science Higher Institute of Applied Sciences of SousseSousse UniversitySousse4000Tunisia

In the cloud environment,ensuring a.high level of da.a.security is in high *** pla.ning stora.e optimiza.ion is pa.t of the whole security process in the cloud *** ena.les da.a.security by a.oiding the risk of da.a.loss a.d da.a.*** development of da.a.flow scheduling a.proa.hes in the cloud environment ta.ing security pa.a.eters into a.count is *** our work,we propose a.da.a.scheduling model for the cloud *** is ma.e up of three pa.ts tha. together help dispa.ch user da.a.flow to the a.propria.e *** first component is the Collector a.ent whichmust periodica.ly collect informa.ion on the sta.e of the network *** second one is the monitoring a.ent which must then a.a.yze,cla.sify,a.d ma.e a.decision on the sta.e of the link a.d fina.ly tra.smit this informa.ion to the *** third one is the scheduler who must consider previous informa.ion to tra.sfer user da.a.including fa.r distribution a.d relia.le *** should be noted tha. ea.h pa.t of the proposedmodel requires the development of its *** this a.ticle,we a.e interested in the development of da.a.tra.sfer a.gorithms,including fa.rness distribution with the considera.ion of a.sta.le link *** a.gorithms a.e ba.ed on the grouping of tra.smitted files a.d the itera.ive *** proposed a.gorithms showthe performa.ces to obta.n a. a.proxima.e solution to the studied problem which is a. NP-ha.d(Non-Polynomia. solution)*** experimenta. results show tha. the best a.gorithm is the ha.f-grouped minimum excluding(HME),with a.percenta.e of 91.3%,a. a.era.e devia.ion of 0.042,a.d a. execution time of 0.001 s.

关键词： Cyber-security cloud computing cloud security a.gorithms heuristics

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