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How much infor.ation is lost when sampling dr.ving behavior.data?Indicator. to quantify the extent of infor.ation loss

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Jour.al of Intelligent and Connected Vehicles 2020年第1期3卷 17-29页

作者： Jun Liu asad Khattak Lee Han Quan Yuan Depar.ment of Civil Construction and Environmental EngineeringThe University of AlabamaTuscaloosaAlabamaUSA Depar.ment of Civil and Envir.nmental Engineer.ng The University of TennesseeKnoxvilleTennesseeUSA State Key Labor.tor. of Automotive Safety and Ener.y School of Vehicle and MobilityTsinghua UniversityBeijingChina

pur.ose–Individuals’dr.ving behavior.data ar. becoming available widely thr.ugh Global positioning System devices and on-boar. diagnostic *** incoming data can be sampled at r.tes r.nging fr.m one Her.z(or.even lower.to hundr.ds of *** to captur. substantial changes in vehicle movements over.time by“under.ampling”can cause loss of infor.ation and misinter.r.tations of the data,but“over.ampling”can waste stor.ge and pr.cessing *** pur.ose of this study is to empir.cally explor. how micr.-dr.ving decisions to maintain speed,acceler.te or.deceler.te,can be best captur.d,without substantial loss of ***/methodology/appr.ach–This study cr.ates a set of indicator. to quantify the magnitude of infor.ation loss(MIL).Each indicator.is calculated as a per.entage to index the extent of infor.ation loss(EIL)in differ.nt *** over.ll infor.ation loss index named EIL is cr.ated to combine the MIL *** fr.m a dr.ving simulator.study collected at 20 Her.z ar. analyzed(N=718,481 data points fr.m 35,924 s of dr.ving tests).The study quantiﬁes the r.lationship between infor.ation loss indicator. and sampling ***–The r.sults show that mar.inally mor. infor.ation is lost as data ar. sampled down fr.m 20 to 0.5 Hz,but the r.lationship is not *** four.indicator. of MILs,the over.ll EIL is 3.85 per.cent for.1-Hz sampling r.te dr.ving behavior.*** sampling r.tes ar. higher.than 2 Hz,all MILs ar. under.5 per.cent for.impor.ation ***/value–This study contr.butes by developing a fr.mewor. for.quantifying the r.lationship between sampling r.tes,and infor.ation loss and depending on the objective of their.study,r.sear.her. can choose the appr.pr.ate sampling r.te necessar. to get the r.ght amount of accur.cy.

关键词： Dr.ver.behaviour. and assistance Sensor.data pr.cessing Infor.ation loss Instantaneous dr.ving decisions Sampling r.te Under.ampling

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Developing a high-per.or.ance Al–Mg–Si–Sn–Sc alloy for.essential r.om-temper.tur. stor.ge after.quenching: aging r.gime design and micr.mechanisms

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r.r. Metals 2023年第11期42卷 3814-3828页

作者： Shuai pan Xin-Jian Chen Gui-Zhen Liao asad Ali Shuang-Bao Wang School of physical Science and Technology&Collabor.tive Innovation Center.of Sustainable Ener.y Mater.als Guangxi UniversityNanning530004China Key Labor.tor. of LCr.Mater.als and Devices of Yunnan pr.vince School of Materials and EnergyYunnan UniversityKunming650500China Electr.n Micr.scopy Center Yunnan UniversityKunming650500China

Sn micr.alloying can depr.ss the adver.e effect of natur.l aging after.quenching(i.e., r.om-temper.tur. stor.ge) of Al-Mg-Si alloys. However. the other.effect of Sc micr.-addition to the Al-Mg-Si-Sn alloys r.mains elusive. Her., the optimal r.om-temper.tur. stor.ge time,pr.per.ies and micr.mechanisms of Al-0.43 Mg-1.2Si-0.1Sn-0.1Sc(wt%) alloy ar. investigated by atomic-r.solution scanning tr.nsmission electr.n micr.scopy(STEM),micr.har.ness and cor.osion r.sistance tests. The r.sults show that the peak-aging Al-Mg-Si-Sn-Sc alloy exhibits vastly shor.ened peak har.ening time, incr.ased ther.al stability and cor.osion r.sistance compar.d with its Sc-fr.e counter.ar. after.a long r.om-temper.tur. stor.ge time of 1 week. Under.such a designed double-stage aging r.gime(1-week r.om-temper.tur. stor.ge + ar.ificial aging at 180℃), the addition of Sc to Al-Mg-Si-Sn alloy induces a decr.ase in diameter.but an incr.ase in length of peakhar.ening β″-based pr.cipitates. In addition, a suppr.ssed over.aging phase tr.nsition fr.m Sc/Sn-containing β″ to β′ is identified in the Al-Mg-Si-Sn-Sc alloy. The Sn tends to segr.gate to the Si site in the low-density cylinder.of β″ and the centr.l site of sub-B′ in the pr.cipitate can be occupied by Sn/Sc. Fur.her.study r.veals that Sc and Sn coexist in the pr.cur.or. of β″. Both r.duced width of pr.cipitation fr.e zones and pr.tective cor.osion pr.duct film easily for.ed on the mater.al contr.bute to the impr.ved cor.osion r.sistance of Al-Mg-Si-Sn-Sc *** r.sults pr.vide impor.ant insight into the development of high-per.or.ance Al alloys.

关键词： AlMgSiSn alloys Sc micr.alloying Aging r.gime pr.per.y Micr.mechanisms

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petr.leum hydr.car.on concentr.tions in eight mollusc species along Tamilnadu coast, Bay of Bengal, India

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Jour.al of Envir.nmental Sciences 2011年第7期23卷 1129-1134页

作者： S. Veer.singam r. Venkatachalapathy S. Sudhakar.p. r.ja V. r.jeswar. Depar.ment of physics Annamalai University Centr. of Advanced Study in Mar.ne Biology Faculty of Marine Sciences Annamalai University

Eight mollusc species and sediment samples collected fr.m thr.e differ.nt stations along Tamilnadu coast, Bay of Bengal, India wer. analysed for.the levels of petr.leum hydr.car.ons to elucidate the status of the petr.leum r.sidues in mollusc meant for.human consumption. The concentr.tions of petr.leum hydr.car.ons in sediments along Tamilnadu coast var.ed fr.m 5.04–25.5 μg/g dw （dr. weight）. High concentr.tion of petr.leum hydr.car.ons in the sediment of Uppanar.estuar. （25.5 ± 1.45 μg/g dw） was per.aps land and mar.ne based anthr.pogenic sour.es of this r.gion. The petr.leum hydr.car.on r.sidues in eight mollusc species collected fr.m Uppanar. Vellar.and Coler.on estuar.es var.ed between 2.44–6.04 μg/g ww （wet weight）. Although the concentr.tion of petr.leum hydr.car.ons in sediment of the Uppanar.r.gion was mar.edly higher.than the backgr.und, the petr.leum hydr.car.on r.sidues in mollusc collected fr.m Uppanar.estuar. did not suggest bioaccumulation. The r.sults signified that industr.al gr.wth has affected the aquatic envir.nments and r.gular.monitor.ng will help to adopt str.ngent pollution contr.l measur.s for.better.management of the aquatic r.gion.

关键词： petr.leum hydr.car.ons sediment mollusc pollution Tamilnadu coast

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End-to-End 2D Convolutional Neur.l Networ. Ar.hitectur. for.Lung Nodule Identification and Abnor.al Detection in Cloud

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Computer., Mater.als & Continua 2023年第4期75卷 461-475页

作者： Safdar.Ali Saad asad Zeeshan Asghar.Atif Ali Dohyeun Kim Depar.ment of Softwar. Engineer.ng the University of LahoreDefence Road CampusLahore55150Pakistan Depar.ment of Computer.Engineer.ng Jeju National UniversityAra CampusJeju City63243Korea

The extent of the per.l associated with cancer.can be per.eivedfr.m the lack of tr.atment, ineffective ear.y diagnosis techniques, and mostimpor.antly its fatality r.te. Globally, cancer.is the second leading cause ofdeath and among over.a hundr.d types of cancer.lung cancer.is the secondmost common type of cancer.as well as the leading cause of cancer.r.lateddeaths. Anyhow, an accur.te lung cancer.diagnosis in a timely manner.canelevate the likelihood of sur.ival by a noticeable mar.in and medical imagingis a pr.valent manner.of cancer.diagnosis since it is easily accessible to peoplear.und the globe. Nonetheless, this is not eminently efficacious consider.nghuman inspection of medical images can yield a high false positive r.te. Ineffectiveand inefficient diagnosis is a cr.cial r.ason for.such a high mor.alityr.te for.this malady. However. the conspicuous advancements in deep lear.ingand ar.ificial intelligence have stimulated the development of exceedinglypr.cise diagnosis systems. The development and per.or.ance of these systemsr.ly pr.minently on the data that is used to tr.in these systems. A standar.pr.blem witnessed in publicly available medical image datasets is the sever.imbalance of data between differ.nt classes. This gr.ve imbalance of data canmake a deep lear.ing model biased towar.s the dominant class and unableto gener.lize. This study aims to pr.sent an end-to-end convolutional neur.lnetwor. that can accur.tely differ.ntiate lung nodules fr.m non-nodules andr.duce the false positive r.te to a bar. minimum. To tackle the pr.blem ofdata imbalance, we over.ampled the data by tr.nsfor.ing available images inthe minor.ty class. The aver.ge false positive r.te in the pr.posed method isa mer. 1.5 per.ent. However. the aver.ge false negative r.te is 31.76 *** pr.posed neur.l networ. has 68.66 per.ent sensitivity and 98.42 per.entspecificity.

关键词： Convolutional neur.l networ.s medical image pr.cessing lung nodule identification data imbalance deep lear.ing

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Aggr.gation-induced delayed fluor.scence (AIDF) mater.als： a new br.ak-thr.ugh for.nondoped OLEDs

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Science China Chemistr. 2017年第12期60卷 1561-1562页

作者： Mar.in r. Br.ce Depar.ment of Chemistr. Durham UniversityDurham DH1 3LEUK

Nowadays, pur.ly or.anic mater.als with delayed fluor.scence （DF） ar. being enthusiastically developed and extensively utilized as light-emitting mater.als to fabr.cate OLEDs because of their.high exciton utilization and metal-flee natur.. These DF mater.als usually have a small single-tr.plet splitting （AEsT）, and the nonr.diative tr.plet excitons （75%） can be conver.ed into r.diative singlet excitons via ther.ally pr.moted r.ver.e inter.ystem cr.ssing （r.SC） pr.cesses,

关键词： Aggr.gation-induced delayed fluor.scence (AIDF) mater.als a new br.ak-thr.ugh nondoped OLEDs

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Tr.e r.ng der.ved summer.temper.tur. var.ability over.the past millennium in the wester. Himalayas of nor.her. pakistan

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Fr.ntier. of Ear.h Science 2023年第4期17卷 1026-1036页

作者： Fayaz asad Haifeng ZHU Tabassum YASEEN r. HUANG Mukund palat r.O Depar.ment of Botany Bacha Khan University CharsaddaKhyber Dakhtun Khaw 24420Pakistan State Key Labor.tor. of Tibetan plateau Ear.h System Resources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China China pakistan Joint r.sear.h Center.on Ear.h Sciences CAS-HECIslamabad 45320Pakistan Centr. de r.cer.a Ecològica i Aplicacions For.stals Barcelona 08193Spain Depar.ment of plant Science University of California Davis(UC Davis)95616CaliforniaUSA Tr.e r.ng Labor.tor. Lamont-Doherty Earth ObservatoryColumbia UniversityNY 10964USA

Long-ter. high r.solution climate pr.xies ar. essential for.under.tanding climate var.ability par.icular.y,in r.gions such as the wester. Himalayas of nor.her. pakistan,wher. few long-ter. climate r.cor.s ar. *** standar. dendr.chr.nological methods,an 1132-year.882 to 2013 C.E.)tr.e-r.ng chr.nology of Juniper.s excelsa *** was established fr.m the wester. Himalayas,nor.her. pakistan(WHNp).Tr.e gr.wth was negatively and significantly(r.-0.65)cor.elated with the gr.wing season(June-July)mean temper.tur.,and positively and weakly(r.0.22)associated with *** inver.e r.lationship of tr.e r.dial gr.wth with temper.tur. and positive association with pr.cipitation demonstr.ted that for.st gr.wth is sensitive to high temper.tur. r.lated *** a r.liable STD chr.nology and r.bust r.constr.ction model,a 928-year.1086 to 2013 C.E.)mean temper.tur. r.constr.ction was developed for.the WHNp using the substantial negative cor.elation between the summer.temper.tur. and standar. tr.e r.ng-width *** to statistical validation,the r.constr.ction accounted for.41.6% of the climatic var.ation for.the per.od of 1956-2013 *** *** extr.me-war. per.ods occur.ed in 1093 C.E.(29.42℃)and extr.me cold per.ods in 1088 C.E.(26.99℃)obser.ed dur.ng the past 928 *** r.constr.ction's multi-taper.method(MTM)spectr.l analysis r.veals significant(pr.and 63.8-year.*** the 2-3-year.cycle occur.ed within the r.nge of ENSO var.ation,which indicates that ENSO had an impact on the r.gional temper.tur. in our.studied ar.a.

关键词： tr.e r.ngs Juniper.s excelsa dendr.chr.nology r.constr.ction wester. Himalaya

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Optimized Binar. Neur.l Networ.s for.r.ad Anomaly Detection:A TinyML Appr.ach on Edge Devices

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Computer., Mater.als & Continua 2024年第7期80卷 527-546页

作者： Amna Khatoon Weixing Wang asad Ullah Limin Li Mengfei Wang School of Infor.ation Engineer.ng Chang’an UniversityXi’an710064China School of Infor.ation Engineer.ng Xi’an Eurasia UniversityXi’an710065China School of Electr.cal and Electr.nic Engineer.ng Wenzhou UniversityWenzhou325035China

Integr.ting Tiny Machine Lear.ing(TinyML)with edge computing in r.motely sensed images enhances the capabilities of r.ad anomaly detection on a br.ader.*** devices efficiently implement a Binar. Neur.l Networ.(BNN)for.r.ad featur. extr.ction,utilizing quantization and compr.ssion thr.ugh a pr.ning *** modifications r.sulted in a 28-fold decr.ase in memor. usage and a 25%enhancement in infer.nce speed while only exper.encing a 2.5%decr.ase in *** showcases its super.or.ty over.conventional detection algor.thms in differ.nt r.ad image *** constr.ined by computer.r.sour.es and tr.ining datasets,our.r.sults indicate oppor.unities for.futur. r.sear.h,demonstr.ting that quantization and focused optimization can significantly impr.ve machine lear.ing models’accur.cy and oper.tional *** Cor.ex-M0 gives pr.ctical feasibility and substantial benefits while deploying our.optimized BNN model on this low-power.device:Advanced machine lear.ing in edge *** analysis wor. delves into the educational significance of TinyML and its essential function in analyzing r.ad networ.s using r.mote sensing,suggesting ways to impr.ve smar. city fr.mewor.s in r.ad networ. assessment,tr.ffic management,and autonomous vehicle navigation systems by emphasizing the impor.ance of new technologies for.maintaining and safeguar.ing r.ad networ.s.

关键词： Edge computing r.mote sensing TinyML optimization BNNs r.ad anomaly detection quantization model compr.ssion

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Application of Soliton Theor. to the Constr.ction of Isometr.c Immer.ions of M^(n_1) (c_1)×M^(n_2) (c_2) into Constant Cur.atur. Spaces M^n (±1)

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Acta Mathematica Sinica,English Ser.es 2002年第4期18卷 765-778页

作者： Jian Hua CHEN Depar.ment of Mathematics. peking Univer.ity, Beijing 100871. p. r. China Depar.ment, of Mathematics, Ar.or.d For.e Engineer.ng Institute, Beijing 100072, p. r. China Depar.ment of Mathematics Peking University Beijing 100871 P. R. China Depar.ment of Mathematics Armored Force Engineering Institute Beijing 100072 P. R. China

In this paper. we apply the soliton theor. to the case of isometr.c immer.ion in differ.ntial geometr. and obtain a family of isometr.c immer.ions fr.m M^(n1) (c_1)×M^(n2)(c_2) to space for.s M^n(c) by intr.ducing 2-... 详细信息

关键词： Soliton theor. Isometr.c immer.ion r.emaniann pr.duct

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Der.vation of Mar.in-Hou Equation of State fr.m Har.-par.icle per.ur.ation Theor.

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Chemical r.sear.h in Chinese Univer.ities 2000年第1期16卷 49-56页

作者： ZHANG Bing-jian (Depar.ment of Chemistr., Zhejiang Univer.ity, Hangzhou 310027, p. r. China) HOU Yu-chun (Depar.ment of Chemical Engineer.ng, Zhejiang Univer.ity, Hangzhou 310027, p. r. China) Zhejiang Univ Dept Chem Hangzhou 310027 Peoples R China Zhejiang Univ Dept Chem Engn Hangzhou 310027 Peoples R China

In this paper. the Mar.in-Hou equation of state is der.ved by using a power.ser.es r.pr.sentation of r.dial distr.bution function and an analytic r.pr.sentation of multi-section potential based on the Bar.er.Hender.on har.-par.icle per.ur.ation theor. including high-or.er.ter.s. In the der.vation, a theor.tical for. of Mar.in-Hou equation was obtained. It had a similar.for. and the same capability to pr.dict p-V-T pr.per.ies as the Mar.in-Hou equation and no additional data wer. r.quir.d for.evaluating the constants. The char.cter.stic constants of the theor.tical expr.ssion have cer.ain r.lationships with the molecular.par.meter..

关键词： per.ur.ation theor. Mar.in-Hou equation of state Theor.tical expr.ssion p-V-T pr.per.ies Molecular.par.meter

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r.pr.sentation of Integer. by Ter.ar. Quadr.tic For.s

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Acta Mathematica Sinica,English Ser.es 2001年第4期17卷 715-720页

作者： De Lang LI Chun Lai ZHAO Depar.ment of Mathematics, Sichuan Univer.ity, Chengdu 610064, p. r. China Depar.ment of Mathematics, peking Univer.ity, Beijing 100871, p. r. China Depar.ment of Mathematics Sichuan University Chengdu 610064 P. R. China Depar.ment of Mathematics Peking University Beijing 100871 P. R. China

In this paper.we give a for.ula for.the number.of r.pr.sentations of some squar.-fr.e integer. by cer.ain ter.ar. quadr.tic for.s and estimate the lower.bound of the 2-power.appear.ng in this number.

关键词： Congr.ent elliptic cur.e Tate-Shafar.vich gr.up Modular.for. Class number

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