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Chinese Geogr.p.ical Science 2003年第1期13卷 91-96页

作者： WANG Yan-li, CHEN Zhe(school of Automation Science and Electr.cal Engineer.ng, beijing university of aeronautics and astronautics, beijing 100083, p. r. china) school of Automation Science and Electr.cal Engineer.ng Beijing University of Aeronautics and Asturonautics 北京

Sever.l image fusion ap.r.aches for.CCD/SAr.images ar. studied and the p.r.or.ance evaluation of these fusion ap.r.aches is comp.eted in this p.p.r. Fir.tly, the p.ep.ocessing of CCD/SAr.images befor. fusion is fulfilled. Then, the image fusion methods including linear.sup.r.0}sition, nonlinear.op.r.tor.method and multir.solution methods, of which the multir.solution methods include Lap.acian p.r.mid, r.tio p.r.mid, contr.st p.r.mid, gr.dient p.r.mid, mor.0}ological p.r.mid and discr.te wavelet tr.nsfor., ar. adop.ed to fuse two typ.s of images. Lastly, the four.p.r.or.ance measur.s, standar. deviation, entr.p., cr.ss entr.p. and sp.tial fr.quency, ar. calculated to comp.r. the fusion r.sults by differ.nt fusion ap.r.aches in this p.p.r. Exp.r.mental r.sults show that contr.st p.r.mid, mor.0}ology p.r.mid and discr.te wavelet tr.nsfor.ation in multir.solution ap.r.aches ar. mor. suitable for.CCD/SAr.image fusion than other.ones p.op.sed in this p.p.r.and the objective p.r.or.ance evaluation of CCD/SAr.image fusion ap.r.aches ar. effective.

关键词： image fusion p.r.or.ance evaluation CCD image SAr.image

A constr.ction of hyp.r.ent functions with p.lynomial tr.ce for.

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Science china Mathematics 2011年第10期54卷 2229-2234页

作者： CAO XiWang1,2,3,& HU Lei3 1Dep.r.ment of Mathematics,Nanjing university of aeronautics and astronautics,Nanjing 210016,china 2LMIB of Ministr. of Education,beijing university of aeronautics and astronautics,beijing 100191,china 3State Key Labor.tor. of Infor.ation Secur.ty,Gr.duate school of Chinese Academy of Sciences,beijing 100049,china Dep.r.ment of Mathematics Nanjing University of Aeronautics and Astronautics Nanjing China LMIB of Ministr. of Education Beijing University of Aeronautics and Astronautics Beijing China State Key Labor.tor. of Infor.ation Secur.ty Graduate School of Chinese Academy of Sciences Beijing China

This p.p.r.p.esents a constr.ction of infinite classes of binar. and p.ar. hyp.r.ent functions of p.lynomial tr.ce for.,based on finding a zer. of a Klooster.an sum.

关键词： bent function hyp.r.ent function Klooster.an sums

A Two Layer. Sector.based DSS for.Bank p.ovisionsFor.casting

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Systems Science and Systems Engineer.ng 1999年第2期9卷 230-236页

作者： LIN Jian(The Management school, beijing university of aeronautics & astronauticsbeijing 100083, p. r. china)

A two-layer.sector.based decision sup.or. system had been r.sear.hed, designed, andimp.emented for.a bank in England to imp.ove the techniques used by the bank to for.cast the levelof p.ovisions to be r.ised against the eventuality of unsecur.d debt failing to p.r.or.. After.descr.blug the str.ctur. of the DSS, the p.p.r.discusses the decision p.ocess using the DSS stage by Stage:fr.m up.ating database, sp.cifying model, eValuating weight, estimating the magnitude of r.lationship.etween var.ables, comp.eting the assump.ions, to car.ying out for.casting.

关键词： DSS p.ovisions for.casting ~tor.based weights, assump.ion

Bootstr.p. Estimation fr.m Simulation Outp.ts

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Systems Science and Systems Engineer.ng 1998年第1期8卷 11-17页

作者： ZOU Zhihong\ LI Dafeng Dep.r.ment of Infor.ation Economics university of Inter.ational Business and Economics beijing 100029, p. r. china FENG Yuncheng school of Management beijing Univ. of aeronautics and astronautics beijing 100083, p. r. china

This p.p.r.discusses a new nonp.r.metr.c statistical method and ap.lies it to simulation outp.t analysis. This can be used to over.ome the limitations of the tr.ditional methods. The step. of making bootstr.p.inter.al estimation ar. given. The simulation r.sults for.the examp.es show that the bootstr.p.method can p.oduce the valid confidence inter.als and imp.ove the simulation p.ecision.

关键词： Simulation outp.t analysis r.samp.ing bootstr.p.method confidence inter.als

An exp.or.tion for.the macr.scop.c p.ysical meaning of entr.p.

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Science china(Technological Sciences) 2010年第7期53卷 1809-1816页

作者： WU jing1 & GUO ZengYuan2 1 College of Ener.y and p.wer.Engineer.ng, Nanjing university of aeronautics and astronautics, Nanjing 210016, china 2 Key Labor.tor. for.Ther.al Science and p.wer.Engineer.ng of Ministr. of Education, school of Aer.sp.ce, Tsinghua university, beijing 100084, china College of Ener.y and p.wer.Engineer.ng Nanjing University of Aeronautics and Astronautics Nanjing China Key Labor.tor. for.Ther.al Science and p.wer.Engineer.ng of Ministr. of Education School of Aerospace Tsinghua University Beijing China

The macr.scop.c p.ysical meaning of entr.p. is analyzed based on the exer.y (availability) of a combined system (a closed system and its environment), which is the maximum amount of useful wor. obtainable fr.m the system and the environment as the system is br.ught into equilibr.um with the environment. The p.ocess the system exp.r.ences can be divided in two sequent sub-p.ocesses, the p.ocess at constant volume, which r.p.esents the heat inter.ction of the system with the environment, and the adiabatic p.ocess, which r.p.esents the wor. inter.ction of the system with the environment. It is shown that the macr.scop.c p.ysical meaning of entr.p. is a measur. of the unavailable ener.y of a closed system for.doing useful wor. thr.ugh heat inter.ction. This statement is mor. p.ecise than those r.p.r.ed in p.ior.liter.tur.. The unavailability function of a closed system can be defined as T0S and p.V in volume constant p.ocess and adiabatic p.ocess, r.sp.ctively. Their.changes, that is, AiTgS) and A (p.V) r.p.esent the unusable p.r.s of the inter.al ener.y of a closed system for.doing useful wor. in cor.esp.nding p.ocesses. Finally, the r.lation between Clausius entr.p. and Boltzmann entr.p. is discussed based on the comp.r.son of their.exp.essions for.absolute entr.p..

关键词： entr.p. macr.scop.c p.ysical meaning exer.y heat inter.ction

r.cognition of the major.scatter.ng sour.es on comp.ex tar.ets based on the high fr.quency r.dar.cr.ss section integr.ted calculation technique

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Jour.al of Shanghai university(English Edition) 2009年第4期13卷 316-321页

作者：黄敏杰吕明云黄俊武哲 school of Aer.nautic Beijing University of Aeronautics and Astronautics

Based on the high fr.quency （HF） integr.ted r.dar.cr.ss section （r.S） calculation ap.r.ach, a technique of detecting major.scatter.ng sour.e is develop.d by using an ap.r.p.iate ar.thmetic for.scatter.ng distr.bution and scatter.ng sour.e detection. For.the p.r.ect adap.ability to tar.ets and the HF of the HF integr.ted r.S calculation p.atfor., this technique is suitable to solve lar.e comp.ex tar.ets and has lower.r.quir.ment to the tar.et modeling. A comp.r.son with the r.sult of 2-D r.dar.imaging confir.s the accur.cy and r.liability of this technique in r.cognition of the major.scatter.ng sour.e on comp.ex tar.ets. This technique p.ovides the foundation for.r.p.d integr.ted evaluation of the scatter.ng p.r.or.ance and 3-D scatter.ng model r.constr.ction of lar.e comp.ex tar.ets.

关键词： stealth technique r.dar.cr.ss section (r.S) scatter.ng center scatter.ng distr.bution map 2-dimension r.dar.imaging

r.botic comp.iant assembly for.comp.ex-shap.d comp.site air.r.ft fr.me based on Gaussian p.ocess consider.ng uncer.ainties

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Chinese Jour.al of aeronautics 2024年第10期37卷 471-482页

作者： Yingke YANG Dongsheng LI Yunong zhai Jie WANG Lei XUE Zhiyong YANG school of Mechanical Engineer.ng and Automation Beihang UniversityBeijing 100191China Ningbo Institute of Technology Beihang UniversityNingbo 3158002China COMAC Shanghai Air.r.ft Manufactur.ng Co. Ltd.Shanghai 201324China

r.bots ar. finding incr.asing ap.lication in air.r.ft comp.site str.ctur. assembly due to their.flexibility and the gr.wing demand of air.r.ft manufactur.r. for.high p.oduction *** contact for.e of the comp.site fr.me in a r.botic assembly of the air.r.ft comp.site fuselage p.nel can har.ly be contr.lled due to the multi-sur.ace var.able contact stiffness caused by comp.iance and comp.ex shap. with multip.e mating *** p.p.r.p.op.ses a r.botic assembly system for.the air.r.ft comp.site fuselage fr.me with a comp.iant contact for.e contr.l str.tegy using the Gaussian p.ocess sur.ogate ***,a r.botic assembly system is intr.duced,and the global coor.inate system tr.nsfor.ation model is ***,a comp.iant for.e contr.l ar.hitectur. is designed to gener.te the desir.d outp.t ***,a Gaussian p.ocess sur.ogate model with uncer.ainties is utilized to model the comp.icated r.lationship.between the r.bot’s outp.t for.e and the nor.al contact for.e acting on the mating sur.ace of the comp.site ***,an op.imal contact for.e contr.l str.tegy is imp.emented to imp.ove the contact ***,an exp.r.ment demonstr.tes that the p.op.sed methodology can ensur. that the contact for.e on each sur.ace is within the limit of the engineer.ng sp.cification and unifor.ly distr.buted,imp.oving the quality comp.r.d to the tr.ditional assembly p.ocess.

关键词： Air.r.ft Comp.site str.ctur. assembly Multi-sur.ace contact Comp.iant contr.l Gaussian p.ocess Uncer.ainty

A novel r.p.ocessable chlor.p.ene r.bber.based on dynamic disulfide metathesis

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Inter.ational Jour.al of Smar. and Nano Mater.als 2024年第1期15卷 42-61页

作者： Jianliang Jiang Junxue zhai Yanqing Chen Dongqi Zhao Yakai Feng school of Chemical Engineer.ng and Technology Collaborative Innovation Center of Chemical Science and Chemical Engineering(Tianjin)Tianjin UniversityTianjinChina r.D Dep.r.ment of china(Yangzhou) Material Handling Tech-Engineering LtdYangzhouChina Key Labor.tor. of r.bber.p.astics of Ministr. of Education/Shandong p.ovince (QUsT)School of Polymer Science&EngineeringQingdao University of Science&TechnologyQingdaoChina r.D Dep.r.ment of Tianjin Joaboa Technology Co.Ltd TianjinP.R.China Fr.ntier. Science Center.for.Synthetic Biology Tianjin UniversityTianjinChina Key Labor.tor. of Systems Bioengineer.ng(Ministr. of Education) Tianjin UniversityTianjinChina

For.sustainable ap.lication of chlor.p.ene r.bber.Cr.,a new technology is develop.d by the vulcanization of Cr.using 2,2'-dithiodip.r.dine(Dp.)as a cr.ss-linking agent with the r.p.o-cessing p.r.or.ance owing to disulfde *** Dp. was incor.0}r.ted into Cr.vulcanization,the Menschutkin r.ac-tion between allyl chlor.de gr.up.and p.r.dine gr.up.occur.ed with a maximum exother.ic p.ak at 184°*** number.of effective cr.ss-linking bond at o.5 p.r.Dp. vulcanizate was higher.than that at high Dp. *** vulcanizate showed high tensile str.ngth(11.12 Mp.)and elongation at br.ak(1253±120%)owing to the exchangeable disulfide bond in the *** the catalysis of tr.p.enylp.osp.ine,the metathesis of disulfide comp.und was imp.oved obviously,which endowed Cr.Dp. vulcanizates with good r.cyclability *** cr.ss-linkage maintains its stability at low temp.r.tur.,thus ensur.ng the mechanical stability of Cr.Dp. vulcanizate under.the ambient *** and r.p.ocessing of Cr.Dp. vulcanizate can be conducted with common industr.al r.bber.p.ocessing *** r.p.ocessable chlor.p.ene r.bber.could have p.tential ap.li-cation in Cr.industr.,also ser.e to significantly imp.ove envir.onmental sustainability.

关键词： Chlor.p.ene r.bber r.p.ocessable Menschutkin r.action disulfide

Adap.ive Contr.l of Attitude and Momentum for.Sp.ce Station Based on r.F Neur.l Networ.s

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Adaptive Control of Attitude and Momentum for Space Station ...