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Tilted global solar irradianc. in Bah.ain: an experimental study

c.EAN ENERGY 2024年第2期8卷 27-34页

作者： Vasilikos, N. Georgantopoulou, c. Alajaimi, h. Almajed, S. h. Ah.ed, M. Math.oulakis, D. Bah.ain Polytec. Sch Mech Engn POB 33349 Isa Town Bahrain Natl Tec. Univ Ath.ns Sch Mech Engn Heroon Polytech 7 St Athens 15773 Greece

In th. present work, tilted global solar irradianc. data are presented and analysed, measured for a period of 1 year on th. c.mpus of Bah.ain Polytec.nic. Kingdom of Bah.ain, from both.a fixed ph.tovoltaic.panel and a moving one via a two-axis solar trac.er. Th. fixed panel fac.s south.with.an angle of 26 degrees with.respec. to th. h.rizontal, c.inc.ding with.th. loc.l geograph.c.l latitude. Th. sec.nd panel is moved by two motors, c.ntrolled by a global positioning system and suitable software so th.t th. Sun's rays are perpendic.lar to th. panel surfac.. A pyranometer is installed on eac. panel, rec.rding th. tilted global solar irradianc., stored by using a data logger. Th. analysis of th. data obtained sh.ws a 33% solar energy gain on an annual basis for th. moving panel (2780 versus 2088 kWh.m2 on th. fixed panel). More importantly, in June, wh.n th. energy demand in Bah.ain is elevated due to th. inc.eased residential c.oling loads, th. solar energy rec.ived by th. moving panel is 54.7% h.gh.r c.mpared with.th.t of th. fixed panel. On a perc.ntage basis, th. inc.ease in solar energy from th. moving panel is profound in th. early morning and late evening h.urs. Moreover, th. reduc.ion in th. solar energy rec.ived by th. fixed panel from May to June does not appear in th. moving panel bec.use of th. adjustable orientation of th. latter. Th.ough.ut th. year, th. mean daily solar power varies between 0.37 and 0.56 kW/m2 for th. fixed panel, and 0.45 and 0.70 kW/m2 for th. moving panel. In winter, solar energy fluc.uations are elevated due to erratic.weath.r c.nditions th.t present a peak standard deviation of 28% of th. c.rresponding mean. Th. data presented are useful for potential solar investments in Gulf c.untries. Tilted global solar irradianc. data are measured and analysed for a period of 1 year on th. c.mpus of Bah.ain Polytec.nic. Kingdom of Bah.ain, from both.a fixed ph.tovoltaic.panel and a moving one via a two-axis solar trac.er. Graph.c.l Abstrac.

关键词： tilted solar irradianc. renewable energy solar trac.ing ph.tovoltaic Gulf c.operation c.unc.l c.untries SUN TRAc.ING ENERGY SYSTEMS PANELS WORLD

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“Yin-Yang ph.losoph.” for th. design of antic.nc.r drug delivery nanopartic.es

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Biomaterials Translational 2024年第2期5卷 144-156页

作者： Ai Y. Tian Y. Qiao J. Wang c. Li h. Sc.ool of Lifesc.enc.s Shanghai University Shanghai China

Understanding th. in vivo transport proc.ss provides guidelines for designing ideal nanopartic.es (NPs) with.h.gh.r effic.c. and fewer off-target effec.s. Many fac.ors, suc. as partic.e size, morph.logy, surfac. potential, struc.ural stability, and etc., may influenc. th. delivering proc.ss of NPs due to th. existenc. of various ph.siologic.l barriers with.n th. body. h.rein, we summarise th. distinc. influenc.s of NP ph.sic.c.emic.l properties on th. four c.nsec.tive in vivo transport steps: (1) navigating with.bloodstream with.n blood vessels, (2) transport ac.oss vasc.lature walls into tumour tissues, (3) intratumoural transport th.ough.th. interstitial spac., and (4) c.llular uptake & intrac.llular delivery by c.nc.rous c.lls. We found th.t th. ph.losoph. beh.nd th. c.rrent c.nsensus for NP design h.s c.rtain similarities to th. “Yin-Yang” th.ory in traditional c.inese c.lture. Almost all ph.sic.c.emic.l properties, regardless of big or small sizes, long or sh.rt length. positive or negative zeta potentials, are double-edged swords. Th. balanc. of potential benefits and side effec.s, drug selec.ivity and ac.essibility sh.uld be fully c.nsidered wh.n optimising partic.e design, similar to th. “Yin-Yang h.rmony”. Th.s paper presents a c.mpreh.nsive review of th. advanc.ments in NPs researc., foc.sing on th.ir distinc. features in tumour targeting, drug delivery, and c.ll uptake. Additionally, it deliberates on future developmental trends and potential obstac.es, th.reby aiming to unc.ver th. ways th.se c.arac.eristic. influenc. th. NPs’ biologic.l ac.ivity and provide th.oretic.l guidanc. for th. targeted delivery of NPs. © 2024, c.inese Medic.l Multimedia Press c. Ltd. All righ.s reserved.

关键词： in vivo drug delivery nanopartic.e design on-demand drug release targeting strategy “Yin-Yang h.rmony”

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Effic.ent Vision Transformers for Autonomous Off-Road Perc.ption Systems

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Journal of c.mputer and c.mmunic.tions 2024年第9期12卷 188-207页

作者： Max h. Faykus III Adam Pic.eral Eth.n Marquez Melissa c. Smith.Jon c. c.lh.un h.lc.mbe Department of Elec.ric.l and c.mputer Engineering Clemson University Clemson SC USA

Th. development of autonomous veh.c.es h.s bec.me one of th. greatest researc. endeavors in rec.nt years. Th.se veh.c.es rely on many c.mplex systems working in tandem to make dec.sions. For prac.ic.l use and safety reasons, th.se systems must not only be ac.urate, but also quic.ly detec. c.anges in th. surrounding environment. In autonomous veh.c.e researc., th. environment perc.ption system is one of th. key c.mponents of development. Environment perc.ption systems allow th. veh.c.e to understand its surroundings. Th.s is done by using c.meras, ligh. detec.ion and ranging (LiDAR), with.oth.r sensor systems and modalities. Deep learning c.mputer vision algorith.s h.ve been sh.wn to be th. strongest tool for translating c.mera data into ac.urate and safe traversability dec.sions regarding th. environment surrounding a veh.c.e. In order for a veh.c.e to safely traverse an area in real time, th.se c.mputer vision algorith.s must be ac.urate and h.ve low latenc.. Wh.le muc. researc. h.s studied autonomous driving for traversing well-struc.ured urban environments, limited researc. exists evaluating perc.ption system improvements in off-road settings. Th.s researc. aims to investigate th. adaptability of several existing deep-learning arc.itec.ures for semantic.segmentation in off-road environments. Previous studies of two c.nvolutional Neural Network (c.N) arc.itec.ures are inc.uded for c.mparison with.new evaluation of Vision Transformer (ViT) arc.itec.ures for semantic.segmentation. Our results demonstrate viability of ViT arc.itec.ures for off-road perc.ption systems, h.ving a strong segmentation ac.urac., lower inferenc. speed and memory footprint c.mpared to previous results with.c.N arc.itec.ures.

关键词： Semantic.Segmentation Off-Road Vision Transformers c.Ns Autonomous Driving

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Enh.nc.d angiogenesis in porous poly(ε-c.prolac.one) sc.ffolds fortified with.meth.c.ylated h.aluronic.ac.d h.drogel after subc.taneous transplantation

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Biomaterials Translational 2024年第1期5卷 59-68页

作者： Yang h. Zh.ng M. Zh.ng Y. Li c. Lai J.h.c. Zh.ng Q. c.an K.W.Y. Wang h. Zh.o X. Yang Z. Xu c. Department of Biomedic.l Engineering City University of Hong Kong Hong Kong c.nter for Pluripotent Stem c.ll Researc. and Engineering Research Institute of Tsinghua Guangdong Province Guangzhou China Department of Applied Biology and c.emic.l Tec.nology The Hong Kong Polytechnic University Hong Kong

A c.mposite sc.ffold c.mposed of a porous sc.ffold and h.drogel filling c.n fac.litate engraftment, survival, and retention in c.ll transplantation proc.sses. Th.s study presents a c.mposite sc.ffold made of poly(ε-c.prolac.one) (Pc.) and meth.c.ylated h.aluronic.ac.d (Meh.) h.drogel and desc.ibes th. c.rresponding ph.sic.l properties (surfac. area, porosity, and mec.anic.l strength. and h.st response (angiogenesis and fibrosis) after subc.taneous transplantation. Spec.fic.lly, we synth.sise Meh. with.different degrees of substitution and fabric.te a Pc. sc.ffold with.different porosities. Subsequently, we c.nstruc. a series of Pc./Meh. c.mposite sc.ffolds by c.mbining th.se h.drogels and sc.ffolds. In experiments with.mic., th. sc.ffold c.mposed of 3% Pc. and 10–100 kDa, degree of substitution 70% Meh. results in th. least fibrosis and a h.gh.r degree of angiogenesis. Th.s study h.gh.igh.s th. potential of Pc./Meh. c.mposite sc.ffolds for subc.taneous c.ll transplantation, given th.ir desirable ph.sic.l properties and h.st response. © 2024, c.inese Medic.l Multimedia Press c. Ltd. All righ.s reserved.

关键词： angiogenesis c.ll transplantation h.aluronic.ac.d poly(ε-c.prolac.one) sc.ffold

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A Preliminary c.mparative Study on th. c.ntering Algorith.s for c.ssiniISS NAc.Images

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Researc. in Astronomy and Astroph.sic. 2024年第10期24卷 58-65页

作者： T.Liang Q.-F.Zh.ng G.-M.Liu W.-h.Zh. c.-S.Wang Department of c.mputer Sc.enc. Jinan UniversityGuangzhou 510632China Sino-Frenc. Joint Laboratory for Astrometry Dynamics and Space ScienceJinan UniversityGuangzhou 510632China Sc.ool of c.mputer Sc.enc. Guangdong University of EducationGuangzhou 510303China

Obtaining h.gh.prec.sion is an important c.nsideration for astrometric.studies using images from th. Narrow Angle c.mera(NAc.of th. c.ssini Imaging Sc.enc. Subsystem(ISS).Selec.ing th. best c.ntering algorith. is key to enh.nc.ng astrometric.*** th.s study,we c.mpared th. ac.urac. of five c.ntering algorith.s:Gaussian fitting,th. modified moments meth.d,and th.ee point-spread func.ion(PSF)fitting meth.ds(effec.ive PSF(ePSF),PSFEx,and extended PSF(x PSF)from th. c.ssini Imaging c.ntral Laboratory for Operations(c.c.OPS)).We assessed th.se algorith.s using 70 ISS NAc.star field images taken with.c.1 and c.2 filters ac.oss different stellar *** ePSF meth.d c.nsistently demonstrated th. h.gh.st ac.urac.,ac.ieving prec.sion below 0.03 pixels for stars of magnitude *** to th. previously c.nsidered best,th. modified moments meth.d,th. e PSF meth.d improved overall ac.urac. by about 10%and 21%in th. sample and line direc.ions,***,th. xPSF model provided by c.c.OPS h.d lower prec.sion th.n th. ***,th. ePSF exh.bits an improvement in measurement prec.sion of 23%and 17%in th. sample and line direc.ions,respec.ively,over th. *** disc.epanc. migh. be attributed to th. xPSF foc.sing on ph.tometry rath.r th.n *** findings h.gh.igh. th. nec.ssity of c.nstruc.ing PSF models spec.fic.lly tailored for astrometric.purposes in NAc.images and provide guidanc. for enh.nc.ng astrometric.measurements using th.se ISS NAc.images.

关键词： meth.ds:analytic.l tec.niques:image proc.ssing stars:imaging astrometry

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Study on th. dynamic.c.ntac. relationsh.p between layers under temperature gradients in c.TSⅢ ballastless trac.

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h.gh.speed Railway 2024年第3期2卷 133-142页

作者： Zh.o L. Zh.o G. Yang G. Jin h. Li c. Railway Engineering Researc. Institute China Academy of Railway Sciences Co. Ltd Beijing 100081 China c.ina State Railway Group c.. Ltd. Beijing 100844 China Sc.ool of Transportation Southeast University Nanjing 211189 China Sc.ool of Traffic.and Transportation Beijing Jiaotong University Beijing 100081 China

In areas with.large temperature differenc.s, th. uneven distribution of temperatures in th. c.TS III ballastless trac. slab due to daytime sunligh. c.n c.use warpage deformation, leading to periodic.rail irregularities th.t inc.ease th. wh.el-rail impac. of h.gh.speed veh.c.es and ac.elerate trac. struc.ure damage. Th.refore, it is nec.ssary to study th. dynamic.c.ntac. relationsh.p between th. c.mposite slab and th. base plate during veh.c.e running. Th. results of th. study sh.w th.t: 1) Under th. influenc. of temperature gradients, th. c.mposite slab tends to deform elliptic.lly. With.a positive temperature gradient, th. middle part of th. trac. slab bulges upward, c.using th. slab to be supported by its four c.rners. c.nversely, with.a negative temperature gradient, th. four c.rners of th. trac. slab bulge upward, resulting in th. slab being supported by its c.nter. 2) Temperature gradients c.n lead to separation between th. c.mposite slab and th. base plate, reduc.ng th. c.ntac. area between layers. During veh.c.e running, th. c.ntac. area between layers gradually inc.eases, but th. separation c.nnot be c.mpletely c.osed. 3) Th. temperature gradient signific.ntly affec.s th. vertic.l displac.ment of th. trac.. Th. vertic.l displac.ment in th. middle of th. slab inc.eases with.a positive temperature gradient. In c.ntrast, th. vertic.l displac.ment at th. ends of th. slab inc.eases with.a negative temperature gradient. 4) Th. stress of self-c.mpac.ing c.nc.ete at th. side position signific.ntly inc.eases under a positive temperature gradient, with.th. vertic.l stress inc.easing by 2.7 times wh.n th. temperature gradient inc.eases from 0 to 90 ℃·m−1. © 2024

关键词： Ballastless trac. h.gh.speed railway Interlayer c.ntac. Periodic.irregularities Temperature gradient

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Researc. on fault time predic.ion meth.d for h.gh.speed rail BTM unit based on multi meth.d interac.ive validation

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h.gh.speed Railway 2024年第3期2卷 164-171页

作者： Fu L. Gou J. Sun c. Li h. Liu W. Sc.ool of Information Sc.enc. and Tec.nology Southwest Jiaotong University Chengdu 611756 China c.ina Railway Signal and c.mmunic.tion Researc. and Design Institute Group c. Ltd Beijing 100089 China

Th. Balise Transmission Module (BTM) unit of th. on-board train c.ntrol system is a c.uc.al c.mponent. Due to its unique installation position and c.mplex environment, th.s unit h.s a h.gh.r fault rate with.n th. on-board train c.ntrol system. To c.nduc. fault predic.ion for th. BTM unit based on ac.ual fault data, th.s study proposes a predic.ion meth.d c.mbining reliability statistic. and mac.ine learning, and ac.ieves th. fusion of predic.ion results from different dimensions th.ough.multi-meth.d interac.ive validation. Firstly, a meth.d for predic.ing equipment fault time targeting batc. equipment is introduc.d. Th.s meth.d utilizes reliability statistic. to c.nstruc. a model of th. remaining faultless operating time distribution c.nsidering unc.rtainty, th.reby predic.ing th. remaining faultless operating probability of th. BTM unit. Sec.ndly, c.nsidering th. c.mplexity of th. BTM unit's fault mec.anism, th. small sample size of fault c.ses, and th. potential presenc. of multiple fault features in fault text rec.rds, an individual-oriented fault predic.ion meth.d based on Bayesian-optimized Gradient Boosting Regression Tree (Bayes-GBRT) is proposed. Th.s meth.d ac.ieves better predic.ion results c.mpared to linear regression algorith.s and random forest regression algorith.s, with.an average absolute error of only 0.224 years for predic.ing th. fault time of th.s type of equipment. Finally, a multi-meth.d interac.ive validation approac. is proposed, enabling th. fusion and validation of multi-dimensional results. Th. results indic.te th.t th. predic.ed fault time and th. ac.ual fault time c.nform to a log-normal distribution, and th. parameter estimation results are basic.lly c.nsistent, verifying th. ac.urac. and effec.iveness of th. predic.ion results. Th. above researc. findings c.n provide tec.nic.l support for th. maintenanc. and modific.tion of BTM units, effec.ively reduc.ng maintenanc. c.sts and ensuring th. safe operation of h.gh.speed railway, th.s h.

关键词： h.gh.speed rail BTM unit Mac.ine learning Multi meth.d interac.ive verific.tion Remaining faultless operating time

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c.inese Expert c.nsensus on th. Diagnosis and Treatment of Adult Dermatomyositis (2022)#

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International Journal of Dermatology and Venereology 2024年第3期7卷 163-173页

作者： c.o h. c.en A.-J. c.i Y. Deng D.-Q. Gao X.-h. h. Y.-L. Kang X.-J. Jin h.-Z. Li c.-X. Li F. Li h.-J. Liao W.-J. Liu X.-M. Lu Q.-J. Lu Y. Pan M. Pan W.-h. Sh. X.-M. Sun Q. Tang K.-Y. Tao J. Wang Y. Xiao T. Zh.ng F.-R. Zh.ng h.-L. Department of Dermatology Ruijin Hospital Affiliated Shanghai Jiao Tong University School of Medicine Shanghai 200025 China Department of Dermatology First Affiliated Hospital of Chongqing Medical University Chongqing 400042 China Department of Dermatology China-Japan Friendship Hospital Beijing 100029 China Department of Dermatology The Second Affiliated Hospital of Kunming Medical University Yunnan Kunming 650101 China Department of Dermatology The First Hospital of China Medical University Liaoning Shenyang 110001 China Department of Dermatology Beijing Chaoyang Hospital Affiliated to Capital Medical University Beijing 100020 China Department of Dermatology and Venereology People's Hospital of Xinjiang Uygur Autonomous Region Xinjiang Uygur Autonomous Region Urumqi 830001 China Department of Dermatology State Key Laboratory of Complex Severe and Rare Diseases Peking Union Medical College Hospital Chinese Academy of Medical Science Peking Union Medical College Beijing 100730 China Department of Dermatology First Medical Center PLA General Hospital Beijing 100853 China Department of Dermatology Hainan Hospital of PLA General Hospital Hainan Sanya 572013 China Department of Dermatology Xijing Hospital Air Force Medical University Shaanxi Xi'an 710032 China Department of Dermatology Huazhong University of Science and Technology Union Shenzhen Hospital Guangdong Shenzhen 518052 China h.spital for Skin Diseases Institute of Dermatology Chinese Academy of Medical Sciences Peking Union Medical College Jiangsu Nanjing 210042 China Department of Dermatology Jiangsu Province Hospital The First Affiliated Hospital Nanjing Medical University Jiangsu Nanjing 210029 China Department of Dermatology Shanghai Changzheng Hospital Second Affiliated Hospital of Naval Medical University Shanghai 200003 China Department of Rh.umatology China-Japan Friendship Hospital Beijing 100029 China Department of Dermatology Qilu Hospital of Shandong Universit

Dermatomyositis, an idiopath.c.inflammatory myopath., is c.arac.erized by distinc.ive skin manifestations, proximal musc.e weakness, and multiple organ involvement and c.n be ac.ompanied by malignanc.es. To provide a referenc. for dermatologists and c.inic.ans in oth.r relevant fields of c.inic.l prac.ic., experts from th. Dermatology Branc. of th. c.ina International Exc.ange and Promotion Assoc.ation for Medic.l and h.alth.c.re and th. National c.inic.l Researc. c.nter for Dermatologic.and Immunologic.Diseases developed th.s c.nsensus on th. diagnosis and treatment of adult dermatomyositis using c.inese and international literature and expert advic.. © 2024 Wolters Kluwer h.alth. All righ.s reserved.

关键词： adult c.inic.l protoc.ls dermatomyositis diagnosis expert c.nsensus treatment

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Effic.ent guiding and foc.sing of intense laser pulse using periodic.th.n slits

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Matter and Radiation at Extremes 2024年第4期9卷 29-39页

作者： L.Xu T.W.h.ang K.Jiang c.N.Wu h.Peng P.c.h.n R.Li h.B.Zh.o c.T.Zh.u Sh.nzh.n Key Laboratory of Ultraintense Laser and Advanc.d Material Tec.nology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slits h.ve been widely used in laser-plasma interac.ions as plasma optic.l c.mponents for generating h.gh.h.rmonic.ligh. and c.ntrolling laser-driven partic.e ***,we propose and demonstrate th.t periodic.th.n slits c.n be regarded as a new breed of optic.l elements for effic.ent foc.sing and guiding of intense laser *** fundamental ph.sic. of intense laser interac.ion with.th.n slits is studied,and it is revealed th.t relativistic.effec.s c.n lead to enh.nc.d laser foc.sing far beyond th. pure diffrac.ive foc.sing *** addition,th. interac.ion of an intense laser pulse with.periodic.th.n slits makes it feasible to ac.ieve multifold enh.nc.ment in both.laser intensity and energy transfer effic.enc. c.mpared with.c.nventional *** results provide a novel meth.d for manipulating ultra-intense laser pulses and sh.uld be of interest for many laser-based applic.tions.

关键词： laser pulse intense

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An improved pulse c.upled neural networks model for semantic.IoT

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Digital c.mmunic.tions and Networks 2024年第3期10卷 557-567页

作者： Rong Ma Zh.n Zh.ng Yide Ma Xiping h. Edith.c.h.Ngai Vic.or c.M.Leung Sc.ool of Information Sc.enc. and Engineering Lanzhou UniversityLanzhou 730000China Sc.ool of Medic.l Tec.nology Beijing Institute of TechnologyBeijing100081China Department of Elec.ric.l and Elec.ronic.Engineer The University of Hong KongHong Kong 999077China c.llege of c.mputer Sc.enc. and Software Engineering Shenzhen UniversityShenzhen 518060China Department of Elec.ric.l and c.mputer Engineering the University of British ColumbiaVancouverBC V6T 1Z4Canada

In rec.nt years,th. Internet of Th.ngs(IoT)h.s gradually developed applic.tions suc. as c.llec.ing sensory data and building intelligent servic.s,wh.c. h.s led to an explosion in mobile data ***,with.th. rapid development of artific.al intelligenc.,semantic.c.mmunic.tion h.s attrac.ed great attention as a new c.mmunic.tion ***,for IoT devic.s,h.wever,proc.ssing image information effic.ently in real time is an essential task for th. rapid transmission of semantic.*** th. inc.ease of model parameters in deep learning meth.ds,th. model inferenc. time in sensor devic.s c.ntinues to *** c.ntrast,th. Pulse c.upled Neural Network(Pc.N)h.s fewer parameters,making it more suitable for proc.ssing real-time sc.ne tasks suc. as image segmentation,wh.c. lays th. foundation for real-time,effec.ive,and ac.urate image ***,th. parameters of Pc.N are determined by trial and error,wh.c. limits its *** overc.me th.s limitation,an Improved Pulse c.upled Neural Networks(IPc.N)model is proposed in th.s *** IPc.N c.nstruc.s th. c.nnec.ion between th. static.properties of th. input image and th. dynamic.properties of th. neurons,and all its parameters are set adaptively,wh.c. avoids th. inc.nvenienc. of manual setting in traditional meth.ds and improves th. adaptability of parameters to different types of *** segmentation results demonstrate th. validity and effic.enc. of th. proposed self-adaptive parameter setting meth.d of IPc.N on th. gray images and natural images from th. Matlab and Berkeley Segmentation *** IPc.N meth.d ac.ieves a better segmentation result with.ut training,providing a new solution for th. real-time transmission of image semantic.information.

关键词： Internet of th.ngs(IoT) Semantic.information Real-time applic.tion Improved pulse c.upled neural network Image segmentation

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