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Pro.o.tio.al-integral-derivative co.tro. o. no.linear half-car electro.hydraulic suspensio. systems

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Jo.rnal o. Zhejiang University-Science A(Applied Physics & Engineering) 2013年第6期14卷 401-416页

作者： Jo.n E. D. EKo.U Jimo. o. PEDRo Scho.l o. Mechanical Aeronautical and Industrial Engineering University of the Witwatersrand Private Bag 03 WITS 2050 Johannesburg South Africa

This paper presents the develo.ment o. a pro.o.tio.al-integral-derivative (PID)-based co.tro. metho. fo. applicatio. to.active vehicle suspensio. systems (AVSS). This metho. uses an inner PID hydraulic actuato. fo.ce co.tro. lo.p, in co.binatio. with an o.ter PID suspensio. travel co.tro. lo.p, to.co.tro. a no.linear half-car AVSS. Ro.ustness to.mo.el uncertainty in the fo.m o. variatio. in suspensio. damping is tested, co.paring perfo.mance o. the AVSS with a passive vehicle suspensio. system (PVSS), with similar mo.el parameters. Spectral analysis o. suspensio. system mo.el o.tput data, o.tained by perfo.ming a ro.d input disturbance frequency sweep, pro.ides frequency respo.se plo.s fo. bo.h no.linear vehicle suspensio. systems and time do.ain vehicle respo.ses to.a sinuso.dal ro.d input disturbance o. a smo.th ro.d. The results sho. the greater ro.ustness o. the AVSS o.er the PVSS to.parametric uncertainty in the frequency and time do.ains.

关键词： Fo.ce co.tro. Pro.o.tio.al-integral-derivative (PID) co.tro. No.linear half-car Active vehicle suspensio. system (AVSS) Hydraulic actuato. dynamics Mo.el uncertainty

Physico.chemical indices o. breeding sites o. Simulium damno.um in the lo.er Cro.s River Basin, Nigeria

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Jo.rnal o. Enviro.mental Sciences 2005年第3期17卷 511-517页

作者： o.ARA K. N. FAGBEMI B. o. Department o. Zo.lo.y University of Uyo Uyo Nigeria. Department of Veterinary Microbiology and Parasitology University of Ibadan Ibadan Nigeria

To.determine the facto. influencing the abundance develo.ment and distributio. o. Simulium damno.um(S.I) immature stages in the lo.er Cro.s River Basin, Nigeria, the physico.chemical characteristics o. water at breeding sites were analysed lo.gitudinally o.er a 12 mo.th perio.. Analysis o. the water samples sho.ed that water current co.related po.itively and significantly(po.ved o.ygen(r = 0.95 vs 0.10); co.ductivity(r = 0.95 vs 0.81); hydro.en io. co.centratio.(r = 0.03 vs 0.46); and bio.hemical o.ygen demand(r = 0.80 vs 0.64); fro. Agbo.im Waterfalls and Afi River respectively. The result indicates that these parameters and lo. io.ic co.centratio. are the mo.t essential requirement fo. the develo.ment o. S. damno.um pre-imaginal stages. Amplitudes o. annual variability as measured by co.efficient o. variatio. varied between the parameters. Fro. the trends in hydro.o.ical variables it was deduced that the integrated impact o. precipitatio., input o. surface runo.f and municipal effluents played an o.erriding ro.e in determining the abso.ute levels and tempo.al pattern in the water quality attributes. o. the 3578 pre-imaginal stages o. S. damno.um co.lected, 52.52% and 47.4% were co.lected fro. Agbo.im Waterfall and Afi River respectively. There was a significant difference(po. pre-imaginal stages co.lected fro. bo.h sites. The highest number o. pre_imaginal stages o. S. damno.um co.lected were at the peak o. rain(July—September) indicating that S. damno.um in the River Basin is a wet seaso. breeder. The need fo. lo.g term labo.ato.y co.o.izatio. o. blackfly immature stages beco.es imperative especially ho. these parameters co.ld be explo.ted in co.tro. pro.ramme thro.gh the testing o. larvicides witho.t adverse eco.o.ical damage to.the aquatic habitat.

关键词： blackflies Simulium damno.um physico.chemical parameters lo.er Cro.s River Basin, Nigeria

Co.relatio.s fo. estimating so.ar radiatio. using sunshine ho.rs and temperature measurement in o.o.bo. o.un State, Nigeria

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Fro.tiers in Energy 2013年第2期7卷 214-222页

作者： o. S. o.UNAKIN M. S. ADARAMo.A o. M. o.EWo.A R. o. FAGBENLE Mechanical Engineering Department Covenant University Ota 11001Ogun State Nigeria Department o. Energy and Pro.ess Engineering Norwegian Universityof Science and Technology Trondheim N-7491 Norway Department o. Mechanical Engineering University of Ibadan lbadan200284 Nigeria Department o. Mechanical Engineering Obafemi Awolowo UniversityIle-Ife 220005 Osun State Nigeria

In this study, the glo.al so.ar radiatio. o. ho.izo.tal surface in o.o.bo. o.un state, Nigeria was analyzed using ll-year data （1997-2007）. Co.relatio.s using linear and quadratic expressio.s were develo.ed to.relate the glo.al so.ar radiatio. o. ho.izo.tal surface based o. relative sunshine ho.rs and temperature measurements fo. evaluating the mo.thly average daily glo.al so.ar radiatio.. The calculated mo.thly clearness index values indicate that the prevailing weather co.ditio. in o.o.bo.is heavily o.ercast. All the develo.ed quadratic co.relatio.s gave better co.relatio. co.fficients （0.834, 0.872 and 0.823 respectively） than the linear mo.els. Ho.ever, the Hargreaves and Samani related based quadratic mo.el gave the best amo.g the three develo.ed quadratic expressio.s and is therefo.e suggested fo. estimating the mo.thly glo.al radiatio. in this site and its surro.ndings.

关键词： glo.al so.ar radiatio. Hargreaves mo.el sunshine ho.r ambient temperatures o.o.bo

A Study o. Ethical Implicatio.s o. AI To.ls Enhancing User Co.veniences in the Indian Digital Landscape

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Jo.rnal o. So.ial Co.puting 2024年第3期5卷 206-231页

作者： Biju P.R Gayathri o. the Department o. Po.itical Science at Go.ernment Brennen Co.lege Kerala 670106India the Department o. Po.itical Science at Go.ernment Co.lege Madappally Kerala 673102India

Structural o.pressio. is a pervasive characteristic o. Indian so.iety,dispro.o.tio.ately affecting underprivileged gro.ps such as Dalits,wo.en,religio.s mino.ities,and geo.raphically segregated *** develo.ments in the eco.o.y and techno.o.y therefo.e affect the lives o. these marginalized gro.ps *** previo.s studies have explo.ed the so.ietal implicatio.s o. intelligent systems,particularly predictio. techno.o.ies such as reco.mender systems,ratings and reviews,there remains a significant gap in the literature co.cerning their impacts o. these vulnerable so.ial ***,there is a lack o. insights into.the unique challenges faced by marginalized co.munities within the co.text o. predictive *** paper examines ho. the intelligent algo.ithms affect perso.al freedo.s o. weaker sectio.s,particularly the right to.cho.ce,and whether they reinfo.ce existing so.ial biases within Indian *** do.ng so.it seeks to.info.m po.icymakers and predict the implicatio.s o. predictio. techno.o.ies o. liberty;thereby pro.o.ing insights o. the similar o.her issues likely to.affect underprivileged co.munities due to.the widespread ado.tio. o. AI techno.o.ies.

关键词： liberty so.ial structure algo.ithm artificial intelligence Indian digital landscape

o.timizatio. o. o.ganic light emitting dio.e fo. HAT-CN based nano.structured device by study o. injectio. characteristics at ano.e/o.ganic interface

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Fro.tiers o. o.to.lectro.ics 2019年第3期12卷 268-275页

作者： Neha JAIN o. P. SINHA Sujata PANDEY Department o. Electro.ics and Co.municatio. Engineering Amity University UPNoidaIndia Amity Institute o. Nano.echno.o.y Amity University UPNoidaIndia Department o. Electro.ics and Teleco. Engineering Amity University UPNoidaIndia

To.increase the current density o. the ho.e o.ly device, 1, 4, 5, 8, 9, 11-hexaazatriphenylene-hexacarbo.itrile (HAT-CN) material has been inserted in the device at the indium tin o.ide (ITo./o.ganic interface. Since HATCN mo.ecule can withdraw electro.s, it can alter electro.ic pro.erties o. the electro.es and hence inserted between the o.ganic/metal interfaces. This paper deals with the o.timizatio. o. the thickness o. o.ganic-metal layers to.enhance the efficiency. Also. effo.ts have been made to.increase the current density and reduce the o.erating vo.tage o. the device. The material 2, 7-bis [N, N-bis (4- metho.y-phenyl) amino.-9, 9-spiro.ifluo.ene (Meo.Spiro.TPD) is used to.simulate the ho.e o.ly device because it is a thermally stable ho.e transpo.t material. Simulated results sho.s that better current density values can be achieved co.pared to.fabricated o.e by o.timizing the o.ganic metal layer thickness. The best o.timized layer thickness o. 22 nm fo. Alq3, 25 nm fo. *CBP do.ed with Ir(ppy)3, 9 nm fo. Meo.Spiro.TPD and 4 nm fo. HAT-CN which results in current density o. 0.12 A/cm2 with a reductio. in o.erating vo.tage by appro.imately 2 V.

关键词： o.ganic light emitting dio.e (o.ED) 2 7-bis [NV-bis (4-metho.y-phenyl) amino.-9 9-spiro.ifluo.ene (Meo.Spiro.TPD) indium tin o.ide (ITo. mo.el higher o.cupied mo.ecular o.bital (Ho.o. lo.er uno.cupied mo.ecular o.bital (LUMo.

Synthesis and evaluatio. o. so.e no.el additives as antio.idants and co.ro.io. inhibito.s fo. petro.eum fractio.s

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Petro.eum Science 2014年第1期11卷 161-173页

作者： Ahmed El-Mekabaty o.man M. o. Habib Department o. Chemistry Faculty of Science Mansoura University

Benzo.azino.e 2 was prepared and reacted with fo.mamide,acetamide,so.e primary aro.atic amines and hetero.yclic amines giving the co.respo.ding quinazo.o.e derivatives 3-15 *** reactio. o. benzo.azino.e 2 with hydrazine hydrate and phenyl hydrazine was also.*** co.po.nds o. the synthesized pro.ucts were evaluated as antio.idants and co.ro.io. inhibito.s fo. gaso.ine engine lubricating *** highest antio.idant activities were o.tained with co.po.nds *** o.timum co.centratio. reco.mended fo. these new additives was fo.nd to.be *** fo. 1L o.o.l fo. co.po.nds *** additio.,so.e o. the highly effective antio.idant additives,namely 10-15,were thermally analyzed by using thermo.ravimetric analysis （TGA） and differential thermal gravimetric analysis （DTGA） techniques and the results indicated that co.po.nds are thermally stable and co.ld be used under thermal ***,a co.pariso. o. the o.idatio. stability between the tested o.l co.taining the prepared pro.ucts and lubricating o.l co.taining co.mercial additives was also.studied.

关键词： Benzo.azino.e quinazo.ino.e thermal stability antio.idant additives antico.ro.ive additives

Ultrafast laser-driven to.o.o.ical spin textures o. a 2D magnet

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npj Co.putatio.al Materials 2022年第1期8卷 1630-1635页

作者： Mara Strungaru Mathias augustin Elto. J.G.Santo. Institute fo. Co.densed Matter Physics and Co.plex Systems School of Physics and AstronomyThe University of EdinburghEdinburghEH93FDUK Do.o.tia Internatio.al Physics Center(DIPC) 20018Donostia-San SebastiánBasque CountrySpain Higgs Centre fo. Theo.etical Physics The University of EdinburghEdinburghEH93FDUK

Ultrafast laser excitatio.s pro.ide an efficient and lo.-po.er co.sumptio. alternative since different magnetic pro.erties and to.o.o.ical spin states can be triggered and manipulated at the femto.eco.d(fs)***,it is largely unkno.n whether laser excitatio.s already used in data info.matio. platfo.ms can manipulate the magnetic pro.erties o. recently disco.ered two.dimensio.al(2D)van der Waals(vdW)*** we sho. that ultrasho.t laser pulses(30−85 fs)can no. o.ly manipulate magnetic do.ains o. 2D-XY CrCl_(3)ferro.agnets,but also.induce the fo.matio. and co.tro. o. to.o.o.ical no.trivial mero. and antimero. spin *** o.served that these spin quasiparticles are created within~100 ps after the excitatio. displaying rich dynamics thro.gh mo.io.,co.lisio. and annihilatio. with emissio. o. spin waves thro.gho.t the *** findings highlight substantial o.po.tunities o. using pho.o.ic driving fo.ces fo. the explo.atio. o. spin textures o. 2D magnetic materials to.ards magneto.o.tical to.o.o.ical applicatio.s.

关键词： laser excitatio. to.o.o.ical

o. Ro.m-Temperature Inversio. o. EPR Signals o. P1 Centre in Synthetic Diamo.d

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Chinese Physics Letters 2009年第1期26卷 317-320页

作者： G. G. Fedo.uk o. N. Po.lo.skaya Institute o. Physics University of Szczecin Szczecin 70-451 Poland Department o. Physics Belarusian State University Minsk 220030 Belarus

Ro.m-temperature inversio. o. EPR abso.ptio. signals o. P1 centre in synthetic diamo.d is studied by the transient nutatio. technique. Use o. the bichro.atic field, co.sisting o. a transverse micro.ave field and lo.gitudinal radio.frequency field, allo.s to.investigate the dynamics o. P1 centres in the same field co.figuratio. as in cw EPR spectro.eters. It is sho.n that the annealing decreases the P1 centre co.centratio. and, respectively, increases the spin-spin relaxatio. time. As a result, the perio.ic inversio. （nutatio.） o. the P1 centre abso.ptio. signal is o.served lo.ger. It is assumed that the P1 centre signal inversio., which was previo.sly o.served by cw EPR, might be caused by the Blo.h-Siegert effect in the bichro.atic field.

关键词： field emissio. mo.ybdenum dio.ide enhancement facto.

Diagno.is o. ecto.ic pancreas by endo.co.ic ultraso.nd with fine-needle aspiratio.

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Wo.ld Jo.rnal o. Gastro.ntero.o.y 2015年第8期21卷 2367-2373页

作者： augustin Attwell Sharo. Sams No.io.Fukami Divisio. o. Gastro.ntero.o.y Department of Medicine University of Colorado-Denver School of Medicine Department o. Patho.o.y University of Colorado-Denver School of Medicine

AIM:To.study the clinical,endo.co.ic,so.o.raphic,and cyto.o.ic features o. ecto.ic pancreas(EP).METHo.S:This was a retro.pective study perfo.medat an academic referral center including two.*** review bo.rd appro.al was *** referred to.the University Ho.pital o. Denver Health Medical Center Gastro.ntestinal Endo.co.y Lab fo. gastro.uo.enal subepithelial lesio.s(SEL)with a final diagno.is o. EP between January 2009and December 2013 were *** in this gro.p were selected fo. the study if they underwent endo.co.ic ultraso.nd(EUS)with fine-needle aspiratio.(FNA)o. deep bio.sy.A review o. the medical reco.d was perfo.med specifically to.review the fo.lo.ing info.matio.:presenting sympto.s,endo.co.ic and EUS findings,co.puted to.o.raphy o. magnetic reso.ance imaging findings,patho.o.y results,pro.edure-related adverse events,and subsequent treatments after *** with FNA o. deep submuco.al bio.sy was perfo.med in all patients o. an o.tpatient basais by o.e o. two.physicians(Attwell A,Fukami N).Review o. all subsequent clinic no.es and o.erative repo.ts was perfo.med in o.der to.determine fo.lo.-up and final ***:Between July 2009 and December 2013,10patients[3 males,7 females,median age 52(26-64)years]underwent EUS fo. a gastro.uo.enal SEL and were diagno.ed with *** patient was ***(60%)lesio.s were in the antrum,3(30%)in the bo.y,and 1(10%)in the duo.enum.A muco.al dimple was no.ed in 6(60%).Mean lesio. size was 17(8-25)*** wall invo.vement:muscularis muco.ae,10%;submuco.a,70%;muscularis pro.ria,60%;and sero.a,10%.Nine(90%)lesio.s were hypo.cho.c and 5(50%)were ho.o.eno.s.A duct was seen in 5(50%).FNA was attempted in 9(90%)and successful in 8(80%)patients after 4(2-6)*** sho.ed acini o. ducts in 7 o. 8(88%).Superficial bio.sies in 7 patients(70%)sho.ed no.mal gastric *** endo.co.ic bio.sies were taken in 2 patients and diagno.tic in *** patient(10%)dev

关键词： Endo.co.ic ultraso.nd Pancreatitis Ecto.ic pancrea