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Exp.rimental investigatio. o. visco.s o.l-water-sand flo. in ho.izo.tal p.p.s:Flo. p.tterns and p.essure gradient

p.tro.eum 2024年第2期10卷 275-293页

作者： Tarek Ganat p.tro.eum and Chemical Engineering Dep.rtment Sultan Qaboos UniversityP.O.Box 50Muscat 123Sultanate of Oman

Fluid p.o.uctio. fro. unco.so.idated reservo.rs o.ten leads in sand p.o.uctio.,which p.ses a number o. *** dep.sitio. in flo.lines can result in significant p.essure dip.,p.p. and facility damage,and o.structio.s that decrease *** research is needed to.understand the mo.ement and dep.sitio. o. sand in o.l-water-sand(o.W-S) *** article fo.uses o. o.W-S flo.s in a 6-meter-lo.g ho.izo.tal p.p. with an inner diameter o. 0.0381 *** study lo.ks at the flo. behavio. o. high visco.ity o.l-water(o.W),water-sand(W-S),and o.l-water-sand(o.W-S) *** were carried o.t at 250 p.ig p.essure in a labo.ato.y flo. test facility using vario.s heavy synthetic o.ls(visco.ities ranging fro. 3500 cp.to.7500 cp.at 25℃) and tap.*** sand co.centratio. varied fro. 1% to.10%,with an average sand p.rticle diameter o. 145 μm and material density o. 2630 kg/m~*** cuts ranged fro. 0.0 to.*** exp.rimental results revealed a mino. change in p.essure gradient between(o.W) and(o.W-S) ***,increasing the sand co.centratio. in(o.W-S) flo. resulted in higher p.essure *** reductio. facto. o. p.essure gradient indicated that the highest decrease in p.essure dro.0}o.curred at higher sup.rficial o.l ***,a direct relatio.ship.was o.served between the reductio. facto. and the decrease in water *** results also.sho.ed that the minimum required transp.rtatio. velo.ity fo. sand slurry decreased with increasing sup.rficial o.l velo.ity,while the minimum transp.rtatio. co.ditio. increased with higher sand *** co.p.riso. between the exp.cted p.essure gradient fro. Bannwart and McKibben et *** the actual exp.rimental data demo.strated significant accuracy fo. the o.l visco.ities and sup.rficial o.l velo.ities used in the study.

关键词： Slurry velo.ity Flo. p.ttern p.essure gradient High visco.ity Minimum transp.rt co.ditio.

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The effects o. data aggregatio. o. lo.g-term p.o.ectio.s o. fo.est stands develo.0}ent

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Fo.est Eco.ystems 2024年第3期11卷 381-389页

作者： Ko.ra Maleki Rasmus Astrup.Nico.as Cattaneo.Wilso. Lara Henao.Clara Anto.-Fernandez No.wegian Institute o. Bio.co.o.y Research Division of Forestry and Forest ResourcesP.O.Box 115ÅsNO-1431Norway

Fo.est management p.anning o.ten relies o. Airbo.ne Laser Scanning(ALS)-based Fo.est Management Invento.ies(FMIs)fo. sustainable and efficient *** the area-based(ABA)ap.ro.ch,these invento.ies estimate fo.est characteristics fo. grid cell areas(p.xels),which are then usually summarized at the stand *** the ALS-based high-reso.utio. No.wegian Fo.est Reso.rce Map.(16 m×16 m p.xel reso.utio.)alo.gside with stand-level gro.th and yield mo.els,this study exp.o.es the imp.ct o. three levels o. p.xel aggregatio.(standlevel,stand-level with sp.cies strata,and p.xel-level)o. p.o.ected stand *** results indicate significant differences in the p.o.ected o.tp.ts based o. the aggregatio. ***,the mo.t substantial difference in estimated vo.ume o.curred between stand-level and p.xel-level aggregatio.,ranging fro.-301 to.253 m^(3)·ha^(-1)fo. single *** differences were,o. average,higher fo. bro.dleaves than fo. sp.uce and p.ne do.inated stands,and fo. mixed stands and stands with higher variability than fo. p.re and ho.o.eno.s *** co.clusio.,this research undersco.es the critical ro.e o. inp.t data reso.utio. in fo.est p.anning and management,emp.asizing the need fo. imp.o.ed data co.lectio. p.actices to.ensure sustainable fo.est management.

关键词： Gro.th and yield mo.els Do.inant sp.cies No.way sp.uce Sco.s p.ne Bro.dleaves Fo.est reso.rce map Stand variability

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Imp.o.ing Channel Estimatio. in a No.A Mo.ulatio. Enviro.ment Based o. Ensemble Learning

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Co.p.ter Mo.eling in Engineering & Sciences 2024年第8期140卷 1315-1337页

作者： Lassaad K.Smirani Leila Jamel Latifah Almuqren Elearning Deanship.and Distance Educatio. Umm Al-Qura UniversityP.O.Box 715MekkahSaudi Arabia Dep.rtment o. Info.matio. Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia

This study p.esents a layered generalizatio. ensemble mo.el fo. next generatio. radio.mo.iles,fo.using o. sup.rvised channel estimatio. *** estimatio. typ.cally invo.ves the insertio. o. p.lo. symbo.s with a well-balanced rhythm and suitable *** mo.el,called Stacked Generalizatio. fo. Channel Estimatio.(SGCE),aims to.enhance channel estimatio. p.rfo.mance by eliminating p.lo. insertio. and imp.o.ing *** SGCE mo.el inco.p.rates six machine learning metho.s:rando. fo.est(RF),gradient bo.sting machine(GB),light gradient bo.sting machine(LGBM),sup.o.t vecto. regressio.(SVR),extremely rando.ized tree(ERT),and extreme gradient bo.sting(XGB).By generating meta-data fro. five mo.els(RF,GB,LGBM,SVR,and ERT),we ensure accurate channel co.fficient p.edictio.s using the XGB *** validate themo.eling p.rfo.mance,we emp.o. the leave-o.e-o.t cro.s-validatio.(Lo.CV)ap.ro.ch,where each o.servatio. serves as the validatio. set while the remaining o.servatio.s act as the training *** p.rfo.mances’results demo.strate higher mean andmedian accuracy co.p.red to.the *** achieves an average accuracy o. 98.4%,p.ecisio. o. 98.1%,and the highest F1-sco.e o. 98.5%,accurately p.edicting channel ***,o.r p.o.0}sedmetho. o.tp.rfo.ms p.io. traditio.al and intelligent techniques in terms o. thro.ghp.t and bit erro. ***’s sup.rio. p.rfo.mance highlights its efficacy in o.0}imizing channel *** can effectively p.edict channel co.fficients and co.tribute to.enhancing the o.erall efficiency o. radio.mo.ile *** extensive exp.rimentatio. and evaluatio.,we demo.strate that SGCE imp.o.ed p.rfo.mance in channel estimatio.,surp.ssing p.evio.s ***,SGCE’s cap.bilities have significant imp.icatio.s fo. o.0}imizing channel estimatio. in mo.ern co.municatio. systems.

关键词： Stacked generalizatio. ensemble learning No.-o.tho.o.al Multip.e Access(No.A) channel estimatio. 5G

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Determinatio. o. o.gano.hlo.ine p.sticides fro. juice samp.es using magnetic bio.har-based disp.rsive micro.so.id p.ase extractio. in co.binatio. with disp.rsive liquid-liquid micro.xtractio.

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Emerging Co.taminants 2024年第1期10卷 126-138页

作者： Kero.Assefa Ago.Shimeles Addisu Kitte Abera Gure Dep.rtment o. Chemistry College of Natural SciencesJimma UniversityP.O.Box 378JimmaEthiopia Dep.rtment o. Chemistry College of Natural SciencesJinka UniversityP.O.Box 165JinkaEthiopia

Analysis o. p.sticide residue levels in juice beverages is imp.rtant to.ensure safe co.sump.io. and avo.d glo.al trade co.cerns asso.iated to.p.sticide co.taminatio.s.A simp.e,inexp.nsive and effective metho. was develo.0}d fo. the determinatio. o. o.gano.hlo.ine p.sticides(o.p.)in bo.tled juice drinks using *** p.etreatment was p.rfo.med using disp.rsive so.id-p.ase micro.xtractio.(D-μ-Sp.)fo. matrix deso.p.io. and disp.rsive liquid-liquid micro.xtractio.(DLLME)fo. analyte *** this study,an affo.dable and effective so.bent fo. the adso.p.io. o. o.p. fro. juice samp.es was synthesized fro. avo.ado.seeds mixed with magnetic p.ecurso.s fo. D-μ*** gro.nd avo.ado.seeds co.bined with a magnetic p.ecurso. nano.o.p.site were characterized using vario.s instruments including scanning electro. micro.co.0}(SEM),X-ray diffractio.(XRD),Fo.rier transfo.m infrared sp.ctro.co.0}(FTIR),and Brunauer-Emmett-Teller(BET)*** so.utio. o.tained fro. D-μ-Sp. deso.p.io. was used as a disp.rsant fo. the subsequent DLLME,which made the co.binatio. o. D-μ-Sp. with DLLME much *** effectiveness o. the metho. was enhanced by o.0}imizing the influential p.rameters in bo.h D-μ-Sp. and *** after,the o.0}imal values were determined fo. the real samp.e ***,there was go.d linear dynamic range with a co.fficient o. determinatio.(r2)≥*** limit o. detectio. and quantificatio. were 0.02–0.69 and 0.06–2.10 ng/L *** metho. sho.ed high enrichment facto.s ranging fro. 96 to.313 with reco.eries o. 87–100%.Intraday and interday p.ecisio.s were≤4%.Co.p.red with o.her rep.rted metho.s,this metho. is a o.e-step.simp.e,cheap.fast,and enviro.mentally friendly alternative and straightfo.ward metho. fo. adso.bing o.gano.hlo.ine p.sticides fro. samp.e *** results demo.strates the high p.tential o. the p.o.0}sed metho. fo. the extractio. and cleanup.o. co.taminants in selected juices and o.her related samp.es.

关键词： Disp.rsive micro.so.id p.ase extractio. Disp.rsive liquid-liquid micro.xtractio. Juice samp.es Magnetic bio.har o.gano.hlo.ine p.sticides Gas chro.ato.rap.y-mass sp.ctro.etry

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Enhancing Healthcare Data Security and Disease Detectio. Using Cro.so.er-Based Multilayer p.rcep.ro. in Smart Healthcare Systems

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Co.p.ter Mo.eling in Engineering & Sciences 2024年第4期139卷 977-997页

作者： Mustufa Haider Abidi Hisham Alkhalefah Mo.amed K.Abo.daif Dep.rtment o. Industrial Engineering College of EngineeringKing Saud UniversityP.O.Box-800Riyadh11421Saudi Arabia

The healthcare data requires accurate disease detectio. analysis,real-timemo.ito.ing,and advancements to.ensure p.o.0}r treatment fo. ***,Machine Learning metho.s are widely utilized in Smart Healthcare Systems(SHS)to.extract valuable features fro.hetero.eneo.s and high-dimensio.al healthcare data fo. p.edicting vario.s diseases and mo.ito.ing p.tient *** metho.s are emp.o.ed acro.s different do.ains that are suscep.ible to.adversarial attacks,necessitating careful ***,this p.p.r p.o.0}ses a cro.so.er-based Multilayer p.rcep.ro.(CMLp.*** co.lected samp.es are p.e-p.o.essed and fed into.the cro.so.er-based multilayer p.rcep.ro. neural netwo.k to.detect adversarial attacks o. themedical reco.ds o. *** an attack is detected,healthcare p.o.essio.als are p.o.p.ly alerted to.p.event data *** p.p.r utilizes two.datasets,namely the synthetic dataset and the University o. Queensland Vital Signs(UQVS)dataset,fro. which numero.s samp.es are *** results are co.ducted to.evaluate the p.rfo.mance o. the p.o.0}sed CMLp.mo.el,utilizing vario.s p.rfo.mancemeasures such as Recall,p.ecisio.,Accuracy,and F1-sco.e to.p.edict p.tient *** the p.o.0}sed metho. with existing ap.ro.ches,it achieves the highest accuracy,p.ecisio.,recall,and ***,the p.o.0}sedmetho. achieves a p.ecisio. o. 93%,an accuracy o. 97%,an F1-sco.e o. 92%,and a recall o. 92%.

关键词： Smart healthcare systems multilayer p.rcep.ro. cybersecurity adversarial attack detectio. Healthcare 4.0

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An Imp.o.ed Deep.Learning Framewo.k fo. Auto.ated o.0}ic Disc Lo.alizatio. and Glauco.a Detectio.

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Co.p.ter Mo.eling in Engineering & Sciences 2024年第8期140卷 1429-1457页

作者： Hela Elmannai Mo.ia Hamdi So.ham Mesho.l Amel Ali Alhussan Manel Ayadi Amel Ksibi Dep.rtment o. Info.matio. Techno.o.y College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Dep.rtment o. Co.p.ter Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Dep.rtment o. Info.matio. System College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia

Glauco.a disease causes irreversible damage to.the o.0}ical nerve and it has the p.tential to.cause p.rmanent lo.s o. *** ranks as the seco.d mo.t p.evalent cause o. p.rmanent *** glauco.a diagno.is requires a highly exp.rienced sp.cialist,co.tly equip.ent,and a lengthy wait *** auto.atic glauco.a detectio.,state-o.-the-art glauco.a detectio. metho.s include a segmentatio.-based metho. to.calculate the cup.to.disc *** metho.s include multi-label segmentatio. netwo.ks and learning-based metho.s and rely o. hand-crafted *** the o.0}ic disc(o.)is o.e o. the key features in retinal images fo. detecting retinal diseases,esp.cially fo. glauco.a disease *** ap.ro.ch p.esented in this study is based o. deep.classifiers fo. o. segmentatio. and glauco.a ***,the o.0}ic disc detectio. p.o.ess is based o. o.ject detectio. using a Mask Regio.-Based Co.vo.utio.al Neural Netwo.k(Mask-RCNN).The o. detectio. task was validated using the Dice sco.e,intersectio. o.er unio.,and accuracy *** o. regio. is then fed into.the seco.d stage fo. glauco.a ***,co.sidering o.ly the o. area fo. glauco.a detectio. will reduce the number o. classificatio. artifacts by limiting the assessment to.the o.0}ic disc *** this task,VGG-16(Visual Geo.etry Gro.p.,Resnet-18(Residual Netwo.k),and Incep.io.-v3 were p.e-trained and *** also.used the Sup.o.t Vecto. Machine *** feature-based metho. uses regio. co.tent features o.tained by Histo.ram o. o.iented Gradients(Ho.)and Gabo. *** final decisio. is based o. weighted fusio..A co.p.riso. o. the o.tained results fro. all classificatio. ap.ro.ches is *** metrics including accuracy and Ro. curve are co.p.red fo. each classificatio. *** no.elty o. this research p.o.ect is the integratio. o. auto.atic o. detectio. and glauco.a diagno.is in a glo.al ***,the fusio.-based decisio. system uses the g

关键词： o.0}ic disc glauco.a fundus image deep.learning

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Fo.matio. o. Natural Melanin/Tio.(2) Nano.tructure Hybrids with Enhanced o.0}ical,Thermal and Magnetic p.o.0}rties as a So.t Material

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Jo.rnal o. Wuhan University o. Techno.o.y(Materials Science) 2024年第3期39卷 613-620页

作者： Saja Algessair Nawal Madkhali Dep.rtment o. p.ysics College of ScienceImam Mohammad Ibn Saud Islamic University(IMSIU)P.O.Box 5701Riyadh 11432Saudi Arabia

The natural Melanin/Tio.(2) was synthesized by the use o. ultraso.icatio. under UV *** influence o. natural melanin o. the structural,o.0}ical and thermal p.o.0}rties o. Tio.(2) nano.0}rticles was investigated by using Fo.rier transfo.m infrared sp.ctro.co.0},thermo.ravimetric analysis and UV-Vis *** was o.served that inco.p.rating natural melanin o. Tio.(2) nano.0}rticles(Tio.(2)-Mel)o.curred at 2.01 eV with a lo. value o. Urbach energy aro.nd 100 meV indicating imp.o.ement in the crystalline *** measurement at ro.m temp.rature sho.ed diamagnetic ***,thermal results sho.ed that Tio.(2)-Mel is stable even at temp.ratures up.to.400℃.Acco.ding to.the results o.tained by the thermal stability o. melanin with titanium dio.ide,it can be a go.d candidate in many ap.licatio.s such as so.ar cells and o.0}o.lectro.ics.

关键词： natural melanin/Tio.(2) thermal stability o.0}o.lectro.ic nano.tructure UV radiatio.

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Chemically Mediated Interactio.s between Grap.vine, Ap.id, Ladybird, and Ant in the Co.text o. Insect Chemical Eco.o.y

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p.yto.-Internatio.al Jo.rnal o. Exp.rimental Bo.any 2024年第7期93卷 1523-1542页

作者： Taghreed Alsufyani No.ra J.Alo.aibi No.r Ho.da M’sakni Mo.a A.Almalki Eman M.Alghamdi Dep.rtment o. Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Dep.rtment o. Bio.o.y College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Chemistry Dep.rtment Faculty of ScienceKing AbdulAziz UniversityP.O.Box 80200Jeddah21589Saudi Arabia

This study simp.iﬁes the co.p.ex relatio.ship.amo.g grap.vine p.ants,ap.ids,ladybirds,and ants,which is essential fo. effective p.st management and eco.o.ical *** study investigated the imp.ct o. ap.id attacks and the p.esence o. ants and ladybirds o. the vo.atile co.p.unds p.o.le released into.the chemo.p.ere o. the co.munity co.sisting o. the co.mo. vine Vitis vinifera,the ap.id Ap.is illino.sensis,the ladybird Co.ci-nella undecimp.nctata-and the ant Tap.no.a *** study aims to.analyze the vo.atile co.p.unds emitted by the grap.vine and surro.nding insects in resp.nse to.these intricate *** extractio. o. vo.atile o.ganic co.p.unds(Vo.s)was carried o.t using clo.ed-lo.p.strip.ing(CLS)and then analyzed via gas chro.ato.rap.y-mass sp.ctro.etry(GC-MS)and p.incip.es co.rdinated analysis(p.A)was *** grap.vine was exp.sed to.different typ.s and o.der o. treatments,including no.-infested,ap.id-infested,ap.id-infested with ant,ap.id-infested with ladybird,and vario.s co.binatio.s o. ant and *** the ap.id attack,the o.tco.es unco.ered massive alteratio.s in the vo.atile co.p.und p.o.*** grap.vine disp.ayed distinct emissio.s o. germacrene D,an alco.o.,and an alkene co.p.red to.no.-infested *** characteristic Vo. p.o.le was the share o. infested grap.s in the p.esence o. ants,with benzene derivatives and sesquiterp.nes do.inating the *** co.xistence o. ladybirds with ants and ap.ids resulted in a dif-ferent vo.atile p.o.le characterized by elevated levels o. aldehydes,keto.es,α-farnesene,and its hydro.y *** was co.cluded that the emissio. o. Vo.s into.the chemo.p.ere o. the grap.vine co.munities varied qualitatively and quantitatively dep.nding o. the level o. the relatio.ship.co.p.exity within each co.munity in resp.nse to.the infestatio. o. grap.vines by ap.ids,the p.esence o. ladybirds as natural p.edato.s,and the p.esence o. ant as *** grap.vine’s status-dep.ndent co.p.unds

关键词： Ap.ids Ap.is illino.sensis vo.atile o.ganic co.p.unds chemo.p.ere p.st management gas chro.ato.rap.y-mass sp.ctro.etry clo.ed-lo.p.strip.ing

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Disentangling the effects o. management and climate change o. habitat suitability fo. sap.o.ylic sp.cies in bo.eal fo.ests

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Jo.rnal o. Fo.estry Research 2024年第2期35卷 121-133页

作者： Ellino.ra Ekman María Triviño.Clemens Blattert Adriano.Mazzio.ta Maria p.tterf Kyle Eyvindso. Dep.rtment o. Bio.o.ical and Enviro.mental Science University of JyvaskylaP.O.Box 3540014 JyvaskylaFinland Institute fo. Atmo.p.eric and Earth System Research(INAR)/p.ysics Faculty of ScienceUniversity of HelsinkiP.O.Box 6800014 HelsinkiFinland Scho.l o. Reso.rce Wisdo. University of JyvaskylaP.O.Box 3540014 JyvaskylaFinland Natural Reso.rces Institute Finland(LUKE) Latokartanonkaari 900790 HelsinkiFinland Eco.ystem Dynamics and Fo.est Management Gro.p Technical University of MunichHans‑Carl‑Von‑Carlowitz‑Platz 285354 FreisingGermany Faculty o. Enviro.mental Sciences and Natural Reso.rce Management Norwegian University of Life SciencesP.O.Box 50031433ÅsNorway

Fo.est degradatio. induced by intensive fo.est management and temp.rature increase by climate change are resulting in bio.iversity decline in bo.eal *** fo.est management and high-end climate emissio. scenario. can further reduce the amo.nt and diversity o. deadwo.d,the limiting facto. fo. habitats fo. sap.o.ylic sp.cies in Euro.0}an bo.eal *** magnitude o. their co.bined effects and ho. changes in fo.est management can affect deadwo.d diversity under a range o. climate change scenario. are p.o.ly *** used fo.est gro.th simulatio.s to.evaluate ho. fo.est management and climate change will individually and jo.ntly affect habitats o. red-listed sap.o.ylic sp.cies in *** simulated seven fo.est management regimes and three climate scenario.(reference,RCp..5 and RCp..5)o.er 100 *** regimes included set aside,co.tinuo.s co.er fo.estry,business-as-usual(BAU)and fo.r mo.ificatio.s o. *** suitability was assessed using a sp.ciessp.cific habitat suitability index,including 21 fungal and invertebrate sp.cies gro.p..“Winner”and“lo.er”sp.cies were identified based o. the mo.elled imp.cts o. fo.est management and climate change o. their habitat *** fo.nd that fo.est management had a majo. imp.ct o. habitat suitability o. sap.o.ylic sp.cies co.p.red to.climate *** suitability index varied by o.er 250%amo.g management regimes,while o.erall change in habitat suitability index caused by climate change was o. average o.ly 2%.Mo.e sp.cies gro.p. were identified as winners than lo.ers fro. imp.cts o. climate change(52%–95%were winners,dep.nding o. the climate change scenario.and management regime).The largest increase in habitat suitability index was achieved under set aside(254%)and the climate scenario.RCp..5(>2%),while co.tinuo.s co.er fo.estry was the mo.t suitable regime to.increase habitat suitability o. sap.o.ylic sp.cies(up.to.11%)acro.s all climate change *** results sho. that clo.e-to.na

关键词： Bio.iversity Simulatio.s Finland Fo.est p.anning Habitat suitability Deadwo.d

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A new fractio.al o.der 6D chao.ic mo.el:Study o. mo.el dynamics,system structure grap.,electro.ic circuit realizatio. and fractio.al co.tro.

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Jo.rnal o. o.ean Engineering and Science 2024年第2期9卷 112-125页

作者： M.Higazy No.ah Almalki Shabbir Muhammad A.Al-Ghamdi Dep.rtment o. Mathematics and Statistics College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Dep.rtment o. p.ysics and Engineering Mathematics Faculty of Electronic EngineeringMenoufia UniversityMenouf 32952Egypt Research Center fo. Advanced Materials Science(RCAMS) King Khalid UniversityP.O.Box 9004Abha 61413Saudi Arabia Dep.rtment o. Chemistry College of ScienceKing Khalid UniversityP.O.Box 9004Abha 61413Saudi Arabia Dep.rtment o. p.ysics Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia

A new fractio.al 6D chao.ic mo.el is co.structed in this *** new fractio.al 6D chao.ic mo.el has six p.sitive p.rameters p.us the fractio.al o.der with eight no.linear *** co.p.icated chao.ic dy-namics o. the new fractio.al 6D mo.el is p.esented and *** basic p.o.0}rties o. this mo.el are studied and its chao.ic attracto.s,dissip.tive feature,symmetry,equilibrium p.ints,Lyap.no. Exp.nents are *** new dynamics o. the 6D fractio.al mo.el is numerically simulated using Matlab *** additio.,utilizing the grap. theo.y to.ls certain structural characteristics are *** electrical circuit is built to.imp.ement the new 5.4 fractio.al o.der 6D ***,an active fractio.al o.der co.tro.ler is p.o.0}sed to.co.tro. the new mo.el at different fractio.al *** chao. o. the new mo.el is very useful and can be used to.p.o.uce rando. keys fo. data encryp.io..

关键词： Chao.ic systems Fractio.al calculus Lyap.no. exp.nents Chao.ic attracto.s Adjacency matrix Hermitian matrix Electro.ic circuit realizatio.

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