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Tra.sient Beha.ior of a.Single-Server Ma.kovia. Queue with Ba.king a.d Working Va.a.ion Interruptions

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Journa. of the Opera.ions Resea.ch Society of China 2021年第2期9卷 321-341页

作者： a.umuga. a.ha.a.pa. thirunavukkarasu Deepa Depa.tment of Ma.hema.ics St.Anne’s College of Engineering and TechnologyAnna UniversityPanrutiTamilnadu 607110India Depa.tment of Ma.hema.ics Idhaya College of Arts and Science for WomenPondicherry UniversityPakkamudayanpetPuducherry 605008India

This pa.er studies the time-dependent a.a.ysis of a. M/M/1 queueing model with single,multiple working va.a.ion,ba.king a.d va.a.ion *** the system becomes empty,the server commences working *** the working va.a.ion period,if the queue length rea.hes a.positive threshold va.ue‘k’,the working va.a.ion of the server is interrupted a.d it immedia.ely sta.ts the service in a. exha.stive *** working va.a.ions,the customers become discoura.ed due to the slow service a.d possess ba.king *** tra.sient system size proba.ilities of the proposed model a.e derived explicitly using the method of genera.ing function a.d continued *** performa.ce indices such a. a.era.e a.d va.ia.ce of system size a.e a.so ***,numerica. simula.ions a.e presented to a.a.yze the impa.t of system pa.a.eters.

关键词： The M/M/1 queue Single a.d multiple working va.a.ion Ba.king Va.a.ion interruption Continued fra.tions Tra.sient proba.ilities

Towa.ds the low tempera.ure growth of uniform dia.eter multi wa.led ca.bon na.otubes by ca.a.ytic chemica. va.our deposition technique

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Na.o-Micro Letters 2010年第3期2卷 204-212页

作者： thirunavukkarasu Soma.a.ha. a.umuga. Pa.dura.ga. Depa.tment of Chemistry Anna University Chennai Depa.tment of Chemica. Engineering University of Massachusetts

Mesoporous MCM-41 molecula. sieves conta.ning f-block tra.sition elements（ga.olinium） with va.ious Si/Gd ra.ios（50,75 a.d 100） were synthesised by a.hydrotherma. *** mesoporous structure wa. confirmed by X-ra. diffra.tion,nitrogen sorption studies,thermogra.imetric a.a.ysis,sca.ning a.d tra.smission electron *** loca. environment of Gd in the ma.eria. wa. studied by electron pa.a.a.netic *** compa.ibility of the ca.a.yst for the synthesis of uniform dia.eter CNTs by va.ying the tempera.ure from 400 to 650°C with fixed flow ra.es of N2 a.d C2H2（140 ml/min a.d 40 ml/min,respectively）.The product is mostly meta. conta.ning thin MWCNTs with dia.eter of 1020 *** shows tha. a.combina.ion of Gd-MCM-41（100） ca.a.yst gives a.high yield of high qua.ity MWCNTs under optimum growth conditions.

关键词： MWCNTs Gd ca.bon na.otubes Contra.ting a.ents Ma.netic resona.ce ima.ing

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Distribution of cla. minera.s in ma.ine sediments off Chenna.,Ba. of Benga.,India.Indica.ors of sediment sources a.d tra.sport processes

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Interna.iona. Journa. of Sediment Resea.ch 2014年第1期29卷 11-23页

作者： Subra.a.ia. VEERa.INGa. Ra.doss VENKa.a.Ha.a.a.HY thirunavukkarasu Ra.KUMa. CSIR-Na.iona. Institute of Ocea.ogra.hy Depa.tment of Physics Annamalai University Centre of a.va.ced Study in Ma.ine Biology Faculty of Marine SciencesAnnamalai University Depa.tment of Ea.th Sciences Annamalai University

Cla. minera.ogy,texture size a.d sta.istica. a.a.yses were ca.ried out on surfa.e sediments from the continenta. shelf of Chenna.,Ba. of Benga.,*** purpose of this study is to cha.a.terize the cla. minera. distribution a.d its rela.ion to the hydrodyna.ics off Chenna. to identify the sources a.d tra.sport pa.hwa.s of the ma.ine *** of cla. minera.s in coa.ta. sediments by Fourier Tra.sform Infra.ed(FTIR)spectroscopy ha. provided the a.socia.ion of qua.tz,feldspa.,ka.linite,chlorite,illite a.d iron oxides(ma.netite a.d hema.ite) derived from river ca.chments a.d coa.ta. ***,chlorite,illite,iron oxides,a.d orga.ic ma.ter a.e the domina.t minera.s in Cooum,a.d a.a.a. *** qua.tz a.d feldspa. zones were identified in Ma.ina.which a.e being confined the sa.d zone a.d pa.a.leling the *** strong rela.ionships a.ong the wa.e energy density,sa.d,qua.tz a.d ca.bona.e revea.ed tha. wa.e induced littora. drift system pla. a.domina.t role in tra.sporta.ion a.d deposition of sediments in the Chenna. *** sediment texture a.d minera.s da.a.a.e in a.reement well with the previous results of hydrodyna.ics a.d littora. drift models in this *** sta.istica. a.a.yses(correla.ion,cluster a.d fa.tor a.a.yses) were ca.ried out a.d obta.ned results suggested tha. cla. minera.s a.d orga.ic ma.ter a.e tra.ped in silt a.d cla. pa.ticles,wherea. qua.tz,feldspa. a.d ca.bona.e a.e a.socia.ed with sa.d *** of sediment sources a.d tra.sport processes from this study will be useful to predict the fa.e of the polluta.ts relea.ed from la.d or the potentia. cha.ge in sediment delivery to coa.ta. a.ea..

关键词： Cla. minera.s Texture size Ma.ine sediment Hydrodyna.ics Multiva.ia.e sta.istics

a. a.a.tive Power a.loca.ion Scheme for Performa.ce Improvement of Coopera.ive SWIPT NOMa.Wireless Networks

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Computers, Ma.eria.s & Continua 2020年第5期63卷 1043-1064页

作者： Ma.imeka.a. thirunavukkarasu Romera.Joa. Spa.ja. La.mika.da. Tha.ga.elu College of Engineering Guindy Anna UniversityChennai600025India

Future wireless networks dema.d high spectra. efficiency,energy efficiency a.d *** non-orthogona. multiple a.cess(NOMa.with simulta.eous wireless informa.ion a.d power tra.sfer(SWIPT)is considered a. one of the novel techniques to meet this *** this work,a. a.a.tive power a.loca.ion scheme ca.led SWIPT ba.ed a.a.tive power a.loca.ion(SWIPT-a.a.NOMa.is proposed for a.power doma.n NOMa.*** proposed scheme considers the receiver sensitivity of the end users while ca.cula.ing the power a.loca.ion coefficients in order to prevent wa.ta.e of power a.loca.ed to user in outa.e a.d by offering priority to a.y one of the users to use ma.imum ha.vested power.a.deta.led a.a.ysis on the bit error ra.e(BER)performa.ce of the proposed scheme is done a.d closed form expression is *** ha.e been ca.ried out with va.ious pa.a.eters tha. influence the receiver sensitivity a.d the results show tha. the network a.hieves better outa.e a.d BER performa.ce using the proposed *** is found tha. the proposed scheme lea.s to a.ten-fold decrea.e in tra.smit power for the sa.e error performa.ce of a.fixed power a.loca.ion ***,it offers 96.06%improvement in the ca.a.ity for a.cumula.ive noise figure a.d fa.ing ma.gin of 10 dB.

关键词： NOMA SWIPT coopera.ive rela.ing a.a.tive power a.loca.ion

Remote induction of in situ hydrogela.ion in a.deep tissue,using a. a.terna.ing ma.netic field a.d superpa.a.a.netic na.opa.ticles

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Na.o Resea.ch 2018年第11期11卷 5997-6009页

作者： Hwa.gja. Lee Guru Ka.thikeya. thirunavukkarasu Semin Kim Ja. Young Lee School of Ma.eria.s Science a.d Engineering Gwangju Institute of Science and Technology Gwongju 51005 Republic of Korea Depa.tment of Biomedica. Science a.d Engineering Gwangju Institute of Science and Technology Gwangju 61005 Repubfic of Korea

In situ hydrogela.ion systems, such a. tra.sderma. polymeriza.ion, a.low for externa. control over the gela.ion processes in a.minima.ly inva.ive wa.. Recently, a.novel system consisting of nea.-infra.ed (NIR) light a.d pla.monic na.oma.eria.s wa. demonstra.ed to ca.se in vivo tra.sderma. gela.ion. However, NIR light is not sufficient for gela.ion induction in deep tissues owing to its limited penetra.ion into tissues. To overcome this problem, here we developed a. a.terna.ing ma.netic field (a.F)-inducible hydrogela.ion system with superpa.a.a.netic iron oxide na.opa.ticles (SPIONs), by which a.deep-tissue–penetra.ing a.F ca. induce hea. genera.ion in the SPIONs a.d tempera.ure eleva.ion (≥ 43 °C), lea.ing to initia.ion of therma. polymeriza.ion of poly(ethylene glycol) dia.ryla.e. The fea.ibility of our a.F-inducible hydrogela.ion wa. successfully demonstra.ed using thick porcine muscle tissues (> 2 cm), wherea. the NIR light–ba.ed hydrogela.ion system could induce gela.ion only in tissues thinner tha. severa. millimeters. Cell via.ility a.sa.s indica.ed cytocompa.ibility of the a.F-inducible hydrogela.ion for cell enca.sula.ion a.d delivery. In vivo hydrogela.ion in ra. muscle tissues further va.ida.ed in situ hydrogela.ion in deep muscle tissues of a.living a.ima.. This a.F-inducible hydrogela.ion system ma. overcome the conventiona. problems of depth limita.ion a.d should extend the a.plica.le a.ea.of on-dema.d injecta.le hydrogel systems for tissue engineering a.d drug delivery a.plica.ions.

关键词： hydrogela.ion a.terna.ing ma.netic field superpa.a.a.netic na.opa.ticles hydrogel tissue engineering cell delivery

Influence of two different dieta.y zinc sources in freshwa.er pra.n Ma.robra.hium rosenbergii post la.va.

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Journa. of Ocea.ology a.d Limnology 2019年第1期37卷 290-299页

作者： thirunavukkarasu Mura.isa.ka. PERIYa.a.I Sa.a.a.a.Bha.a. SUBRa.a.Ia. Ra.ha.rishna. PERUMa. Sa.tha.a. a.ua.ic Ecology La.ora.ory Department of Zoology Bharathiar University Ma.ine Pla.ktonology a.d a.ua.ulture La.ora.ory Department of Marine Science Bharathidasan University Crusta.ea. Biology La.ora.ory Department of Zoology Bharathiar University Depa.tment of a.id La.d a.riculture College of Food & Agriculture United Arab Emirates University

a.feeding experiment wa. conducted to eva.ua.e the ef fects of bulk zinc(B-Zn) a.d zinc na.opa.ticles(Zn-NPs) on surviva., growth, compositions of a.ino a.id a.d fa.ty a.id, a.d nonspeci?c immune responses of the freshwa.er pra.n, Ma.robra.hium rosenbergii post la.va.. The B-Zn(size 10 μm)a.d Zn-NPs(size 50 nm) were supplemented sepa.a.ely with the ba.a. feeds of M. rosenbergii a. 60 mg/kg a.d feed without supplementa.ion of a.y Zn source wa. served a. a.control. M. rosenbergii were fed these feeds for 90 da.s a.d the results showed tha. signi?ca.t( P a., growth, feed inta.e,speci?c growth ra.e, essentia. a.ino a.ids, unsa.ura.ed fa.ty a.ids, nonspeci?c immune responses(tota. ha.mocytes a.d dif ferentia. ha.mocytes count) of M. rosenbergii fed with B-Zn a.d Zn-NPs supplemented feeds when compa.ed to control. a.ong these Zn sources, Zn-NPs supplemented feeds fed pra.ns showed signi?ca.tly( P a.ce tha. tha. of B-Zn a.d control. Hence, present study suggests tha. the 60 mg/kg Zn-NPs ca. be supplemented with ba.a. feeds of M. rosenbergii for regula.ing better surviva. a.d growth.

关键词： surviva. feed a.ino a.id fa.ty a.id ha.mocytes zinc na.opa.ticles

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a.plica.ion of remote sensing a.d GIS a.a.ysis for identifying groundwa.er potentia. zone in pa.ts of Koda.ka.a. Ta.uk, South India

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Frontiers of Ea.th Science 2013年第1期7卷 65-75页

作者： Murugesa. Ba.Ya.a. thirunavukkarasu Ra.KUMa. Sena.a.hi VENKa.Ra.a.a. Ba.a.ubra.a.ia. GURUGNa.a. Depa.tment of Ea.th Sciences Annamalai University Annamalai Nagar 608002 India Depa.tment of Geology Gandhigram Rural Institute Deemed University Gandhigarm 624302 India

Groundwa.er potentia. zones were dema.ca.ed with the help of remote sensing a.d Geogra.hic Informa. tion System （GIS） techniques. The study a.ea.is composed rocks of a.cha.a. a.e a.d cha.ockite domina.ed over others. The pa.a.eters considered for identifying the groundwa.er potentia. zone of geology slope, dra.na.e density, geomorphic units a.d linea.ent density were genera.ed using the resource sa. （IRS P6 LISS IV MX） da.a.a.d survey of India.（SO1） toposheets of sca.e 1：50000 a.d integra.ed them with a. inverse dista.ce weighted （IDW） model ba.ed on GIS da.a.to identify the ground- wa.er potentia. of the study a.ea. Suita.le weighta.e fa.tors were a.signed for ea.h ca.egory of these pa.a. meters. For the va.ious geomorphic units, weighta.e fa.tors were a.signed ba.ed on their ca.a.ility to store ground-wa.er. This procedure wa. repea.ed for a.l the other la.ers a.d resulta.t la.ers were recla.sified. The recla.si- fied la.ers were then combined to dema.ca.e zones a. very good, good, modera.e, low, a.d poor. This groundwa.er potentia.ity informa.ion could be used for effective identifica.ion of suita.le loca.ions for extra.tion of pota.le wa.er for rura. popula.ions.

关键词： remote sensing GIS slope geomorphic linea.ent Koda.ka.a.

Va.ia.ions in texture of bea.h sediments in the vicinity of the Tiruma.a.ra.a.a. river mouth of India

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Interna.iona. Journa. of Sediment Resea.ch 2011年第4期26卷 460-470页

作者： Sena.a.hi VENKa.Ra.a.a. thirunavukkarasu Ra.KUMa. Irudha.a.a.ha. a.ITHa.a.Y Govinda.a. Ra.ESH Resea.ch schola. Department of Earth SciencesAnnamalai UniversityAnnamalainagar608002.TamilnaduIndia Depa.tment of Ea.th Sciences Annamalai University

The distribution of gra.n size pa.a.eters a.ong 11 km stretch of the bea.h sediments between Ka.ika. a.d Na.ore,revea.s tha. the mea. gra.n size exhibits a.ma.ked decrea.ing trend on either side of the mouth of the Tiruma.a.ra.a.a. River which flow from west to *** sediments a.e ma.nly of medium to coa.se gra.ned,modera.ely sorted,nea.-symmetrica. skewed to fine skewed a.d leptokurtic to mesokurtic in *** of va.ious pa.a.eters shows bimoda. na.ure of sediments ha.ing domina.ce of medium to coa.se *** ma.or pa.t of the sediment fa.l in a.coa.se to fine gra.ned ca.egory(sa.d a.d silt).Ba.ed on the CM(Coa.ser one percentile va.ue in micron) pa.tern,the sediment fa.l in rolling a.d suspension *** fa.tors includes the sediments discha.ged from the river mixes with offshore sediments a.d with the sediments eroded from a.source *** effect of wa.e sorting, a.d the northwa.d drifting of sediments by littora. current a.e *** indica.e tha. the Tiruma.a.ra.a.a. River is the most importa.t source for modern sediments in the study *** a.ita.ion by wa.es is a. importa.t sorting mecha.ism in the study a.ea.a.d the net sediment tra.sport in the study a.ea.is *** findings a.e ba.ed on the gra.n sizes a.d a.so corrobora.ed by shortterm observa.ions of the bea.h sediment dyna.ics a.d tra.sport during the monsoon a.d summer sea.ons between Ka.a.ka. a.d Na.ore region.

关键词： Gra.n size a.a.ysis Bea.h sediments Tiruma.a.ra.a.r Ea.t coa.t

D^(2)Pa.:Epileptic seizures prediction using a.versa.ia. deep dua. pa.ch a.tention mecha.ism

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Ca.I Tra.sa.tions on Intelligence Technology 2023年第3期8卷 755-769页

作者： a.fa. a.ma. Kha. Ra.esh Kuma. Ma.endra. Usha.a.i thirunavukkarasu Muha.ma. Fa.eem Depa.tment of Computer Science College of ComputingKhon Kaen UniversityKhon KaenThailand Depa.tment of Computer Science a.d Engineering Rajalakshmi Engineering CollegeChennaiIndia Depa.tment of Biomedica. Engineering Saveetha School of EngineeringSaveetha Institute of Medical and Technical Sciences(Deemed to be University)ChennaiIndia School of Technology a.d Innova.ions University of VaasaVaasaFinland

Epilepsy is considered a. a.serious bra.n disorder in which pa.ients frequently experience *** seizures a.e defined a. the unexpected electrica. cha.ges in bra.n neura. a.tivity,which lea.s to *** resea.ches ma.e a. intense effort for predicting the epileptic seizures using bra.n signa. ***,they fa.ed difficulty in obta.ning the pa.ients'cha.a.teristics beca.se the model's distribution turned to fa.e predictions,a.fecting the model's *** a.dition,the existing prediction models ha.e severe issues,such a. overfitting a.d fa.se positive *** overcome these existing issues,we propose a.deep lea.ning a.proa.h known a. Deep dua.‐pa.ch a.tention mecha.ism(D^(2)Pa.)for cla.sifying the pre‐icta. signa.s of people with Epilepsy ba.ed on the bra.n *** neura. network is integra.ed with D^(2)Pa.,a.d it lowers the effect of differences between pa.ients to predict *** multi‐network design enha.ces the tra.ned model's genera.isa.ility a.d sta.ility ***,the proposed model for processing the bra.n signa. is designed to tra.sform the signa.s into da.a.blocks,which is a.propria.e for pre‐icta. *** ea.lier wa.ning of epilepsy with the proposed model obta.ns the a.xilia.y *** da.a.of rea. pa.ients for the experiments provides the improved a.cura.y by D2Pa. a.proxima.ion compa.ed to the existing *** be more distinctive,the a.thors ha.e a.a.ysed the performa.ce of their work with five pa.ients,a.d the a.cura.y comes out to be 95%,97%,99%,99%,a.d 99%***,the numerica. results unveil tha. the proposed work outperforms the existing models.

关键词： a.tificia. intelligence techniques cla.sifica.ion lea.ning(a.tificia. intelligence)