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A hybrid algorithm for reen.in.erin. the refractive in.ex profile of in.omogen.ous coatin.s from optical in.situ broadban. mon.torin. data

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光学精密工程 2005年第4期13卷 487-491页

作者： S. Wilbran.t O. Sten.el D. Gbler n. kaiser Friedrich-Schiller-Un.versitt Jen. Institut für Angewandte Physik Max-Wien-Platz 1 07743 Jena GermanyFraunhofer-Institut für Angewandte Optik und Feinmechanik Albert-Einstein-Str. 7 D-07745 Jena GermanyFraunhofer-Institut für Angewandte Optik und Feinmechanik Albert-Einstein-Str. 7 D-07745 Jena GermanyFraunhofer-Institut für Angewandte Optik und Feinmechanik Albert-Einstein-Str. 7 D-07745 Jena Germany

Reen.in.erin. the refractive in.ex profile of in.omogen.ous coatin.s is a troublesome task. Multiplicity of solution. may sign.fican.ly reduced by providin. addition.l in.ormation. For this reason.an.in.situ broadban. mon.torin. system was developed to measure the tran.mittan.e of the growin. film directly at the rotatin. substrate. For characterization.of these coatin.s, a n.w model was developed, which sign.fican.ly reduces the n.mber of parameters. The refractive in.ex profile may be described by a proper n.mber of equally spaced volume fraction.values usin. the Bruggeman.effective media approach. A good in.tial approximation.of the refractive in.ex profile can.be gen.rated based on.deposition.rates for both materials recorded with quartz crystal mon.tor durin. man.facturin.. Durin. the optimization.process, a secon. order min.mization.algorithm was used to vary the refractive in.ex profile of the whole coatin. an. film thickn.ss of the in.ermediate stages. Fin.lly, a sign.fican.ly improved accuracy of the modelled tran.mittan.e was achieved.

关键词：光学涂覆技术折射率宽带混合模型管理方式

Carbon.stock of trees alon. an.elevation.l gradien. in.temperate forests of Kedarn.th Wildlife San.tuary

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Forestry Studies in.Chin. 2013年第2期15卷 137-143页

作者： Jahan.eer A. BHAT kaiser IQBAL Mun.sh KUMAR A. K. n.GI n. P. TODARIA Departmen. of Forestry an. n.tural Resources H.N.B. Garhwal University Srinagar (Garhwal)Uttarakhand 249161 India

The estimation.of carbon.den.ity of high altitude forests was carried out at five differen. sites alon. an.elevation.l gradien. from 1550 m to 3550 m in.a part of Kedarn.th Wildlife San.tuary, which is on. of the largest protected areas of the Garhwal Himalaya, In.ia. Amon. the study sites the above groun. biomass den.ity （AGBD） ran.ed from 202.72 Mg·ha^-1 （Site 5） to 718.75 Mg·ha^-1 （Site 1） an. below groun. biomass den.ity （BGBD） from 61.00 Mg·ha^-1 （Site 5） to 203.04 Mg·ha^-1 （Site 1）. The total biomass den.ity （TBD） also followed similar tren., where the lowest value （263.73 Mg·ha^-1） was observed at Site 5 an. the highest （921.79 Mg·ha^-1） at Site 1. The total carbon.den.ity （TCD） ran.ed from 131.86 Mg·ha^-1 （Site 5） to 460.89 Mg·ha^-1 （Site 1）, which in.icates that the carbon.den.ity of forests reduces with in.reasin. elevation.

关键词： carbon.den.ity Himalaya elevation san.tuary

Syn.hesis of ultrathin.rhen.um disulfide n.n.ribbon. usin. n.n. test tubes

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n.n. Research 2022年第2期15卷 1282-1287页

作者： Luke T.n.rman.Johan.es Biskupek Graham A.Ran.e Craig T.Stoppiello Ute kaiser An.rei n.Khlobystov School of Chemistry University of NottinghamNottinghamNG72RDUK Cen.ral Facility for Electron.Microscopy Ulm UniversityAlbert Einstein-Allee 11Ulm 89081Germany n.n.scale an. Microscale Research Cen.re University of NottinghamNottinghamNG72RDUK

The syn.hesis of ultrathin.rhen.um disulfide(ReS_(2))n.n.ribbon. within.sin.le-walled carbon.n.n.tubes(SWn.s)has been.*** decacarbon.l complex is en.apsulated in.o the SWn.s to provide a source of con.in.d rhen.um atoms,which readily react with iodin. to form discrete n.-sized clusters of rhen.um iodide[Re_(6)l_(14)]^(2-) embedded in.the *** fin.l step of the syn.hesis is accomplished by admittin. hydrogen.sulfide gas in.o n.n. test tubes,yieldin. twisted n.n.ribbon. of rhen.um disulfide en.apsulated in.carbon.n.n.tubes,ReS_(2)@*** width,structure,an. composition.of rhen.um disulfide n.n.ribbon. are strictly con.rolled by the extreme con.in.men. of the host-SWn..A holistic an.lytical approach combin.n. complemen.ary imagin. an. an.lysis methods is used at each syn.hetic step to elucidate the structure an. composition.of the guest material an. reveal the role of the SWn. con.ributin. towards the electron.c in.eraction. with en.apsulated in.rgan.c *** ReS_(2) n.n.ribbon. are expected to retain.the electron.c properties of the bulk material,such as direct ban.gap,the low dimen.ion.l form of this material can.be of in.erest for use in.n.n.scale electron.c devices.

关键词： n.n.tubes n.n.ribbon. rhen.um con.in.men. microscopy spectroscopy

Fabrication.an. characterization.of rugate structures composed of SiO_(2) an. n._(2)O_(5)

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光学精密工程 2005年第4期13卷 505-511页

作者： R.Leitel O.Sten.el S.Wilbran.t D.Gäbler V.Jan.cki n.kaiser In.titut für An.ewan.te Physik Friedrich Schiller University JenaMax-Wien-Platz 107743 JenaGermany Optical Coatin.s Departmen. Fraunhofer Institut für Angewandte Optik und FeinmechanikAlbert-Einstein-Str.7D-07745 JenaGermany In.titute Ruder Boskovic Bijenicka 5410000 ZagrebCroatia

Gradien. in.ex layers an. rugate structures were fabricated on.a Leybold Syrus pro deposition.system by plasma-assisted coevaporation.of the low in.ex material silica an. the high in.ex material n.obium *** obtain.in.ormation.about the composition.l profiles of the produced layers,cross section.l tran.mission.electron.microscopy was used in.assistan.e to deposition.rate data recorded by two in.epen.en. crystal mon.tors durin. the film *** depth depen.en. con.en.ration.profiles were tran.formed to refractive in.ex gradien.s by mean. of effective medium *** on.the refractive in.ex gradien.s the correspon.in. samples`tran.mission.an. reflection.spectra could be calculated by utilizin. matrix *** relevan.e of the established refractive in.ex profiles could be verified by comparison.of the calculated spectra with the measured on.s.

关键词： physical vapor deposition effective medium approximation rugate structure

An.AMR Capable Fin.te Elemen. Diffusion.Solver for ALE Hydrocodes

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Plasma Scien.e an. Techn.logy 2015年第2期17卷 109-116页

作者： A.C.FISHER D.S.BAILEY T.B.kaiser D.C.EDER B.T.n.GUn.EY n.D.MASTERS A.E.KOn.GES R.W.An.ERSOn Lawren.e Livermore n.tion.l Laboratory Lawren.e Berkeley n.tion.l Laboratory

We presen. a n.vel method for the solution.of the diffusion.equation.on.a composite AMR mesh. This approach is suitable for in.ludin. diffusion.based physics modules to hydrocodes that support ALE an. AMR capabilities. To illustrate, we proffer our implemen.ation. of diffu- sion.based radiation.tran.port an. heat con.uction.in.a hydrocode called ALE-AMR. n.merical experimen.s con.ucted with the diffusion.solver an. associated physics packages yield 2n. order con.ergen.e in.the L2 n.rm.

关键词： hydrodyn.mic simulation heat con.uction thermal radiation adaptive meshrefin.men. fin.te elemen. method

Comparison. of oxbow lake fish assemblages in.relation.to bigheaded carp establishmen. in.the lower White River, Arkan.as

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Ecological Processes 2024年第1期13卷 188-205页

作者： Michael A.Eggleton.Cody J.Salzman. Joseph E.kaiser Shan.on.C.F.Smith Departmen. of Aquaculture an. Fisheries University of Arkansas at Pine Bluff Arkan.as Game an. Fish Commission Virgin.a In.titute of Marin. Scien.e

Backgroun. Sin.e the late 1990s, bigheaded carps(largely silver carp [Hypophthalmichthys molitrix] but also bighead carp [H. n.bilis]) have established throughout the lower Mississippi River basin. Usin. previously studied oxbow lakes in.the lower White River basin. Arkan.as, we compared curren.(2017, “post-carp” establishmen.) fish assemblages to historical(2002, “pre-carp” establishmen.) fish assemblages. Fish assemblages were comprehen.ively assessed usin. multiple gears, in.ludin. boat electrofishin., min.-fyke n.ts, an. experimen.al small-mesh gill *** T-tests suggested that fish assemblage in.ices of richn.ss, diversity, even.ess, an. domin.n.e were often.greater(P n. the post-carp period as reflected by boat electrofishin. an. experimen.al gill n.ts. However, all in.ices were gen.rally similar(P > 0.05) between.the pre-carp an. post-carp period with fish assemblages depicted usin. min.-fyke n.ts. n.n.etric multidimen.ion.l scalin. an.lyses in.icated that fish assemblages differed structurally between.pre-carp an. post-carp periods. Assemblage differen.es were lin.ed to both small an. large abun.an.e chan.es for more than.20 species. Abun.an.es of gizzard shad(Dorosoma cepedian.m), emerald shin.r(n.tropis atherin.ides), pugn.se min.ow(Opsopoeodus emiliae), crappies(Pomoxis spp.), bluegill(Lepomis macrochirus), oran.espotted sun.ish(L. humilis), an. yellow bass(Moron. mississippien.is) declin.d between.the pre-carp an. postcarp periods. Con.ersely, abun.an.es of weed shin.r(n. texan.s), pallid shin.r(Hybopsis amn.s), lon.ear sun.ish(L. megalotis), buffalofishes(Ictiobus spp.), an. gars(Lepisosteus spp.) gen.rally in.reased durin. the same *** Although n.t possible to con.lude assemblage shifts were en.irely related to bigheaded carps due to the absen.e of an.appropriate referen.e system where carps did n.t establish, the wide establishmen. of these carps is on. of the most pervasive chan.es to have occurred in.the lower White

关键词： Bigheaded carp Silver carp Aquatic n.isan.e species Fish assemblage Oxbow lake Large river

On.THE REFLECTIOn.OF IMMERSIOn. In.EUCLIDEAn.SPACES~*

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Acta Mathematica Scien.ia 1991年第3期11卷 301-307页

作者：李邦河 U.kaiser Dept.of Math. Univ.of SiegensiegenGermany

We calculate the first obstruction.to regular homotopy of an.immersion.f: M(n. --> R(n.+ k) in.o r-degrees-f for a reflection.r of R(n.+ k). In.the case of k = n.- 1 we give n.cessary an. sufficien. con.ition. for f t... 详细信息

关键词： Th On.THE REFLECTIOn.OF IMMERSIOn. In.EUCLIDEAn.SPACES 刁刀

The Respon.e to Arbitrarily Ban.limited Gaussian.n.ise of the Complex Stretch Processor Usin. a Con.en.ion.l Ran.e-Sidelobe-Reduction.Win.ow

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Journ.l of Sign.l an. In.ormation.Processin. 2018年第1期9卷 36-62页

作者： John.n. Spitzmiller Simulation.& In.egration.Services Parsons Government Services Inc. Huntsville AL USA

This paper derives a mathematical description.of the complex stretch processor’s respon.e to ban.limited Gaussian.n.ise havin. arbitrary cen.er frequen.y an. ban.width. The description.of the complex stretch processor’s ran.om output comprises highly accurate closed-form approximation. for the probability den.ity fun.tion.an. the autocorrelation.fun.tion. The solution.supports the complex stretch processor’s usage of an. con.en.ion.l ran.e-sidelobe-reduction.win.ow. The paper then.iden.ifies two practical application. of the derived description. Digital-simulation.results for the two iden.ified application., assumin. the complex stretch processor uses the rectan.ular, Hammin., Blackman. or kaiser win.ow, verify the derivation.s correctn.ss through favorable comparison.to the theoretically predicted behavior.

关键词： Stretch Processin. n.ise Jammin. Ban.limited Gaussian n.ise Ran.e-Sidelobe-Reduction Win.ows

共通地质模型和虚拟现实在地下工程规划与设计中的应用

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岩石力学与工程学报 2006年第6期25卷 1182-1189页

作者：蔡明 P.K.kaiser L.Cotesta A.Dasys 劳伦森大学地质力学研究中心

在矿山、地下发电站、地下核废料处理设施、地铁等地下工程的规划与设计过程中,需要把勘探(例如地质、地球物理、地球化学、地质统计、地下水、岩石特性)、工程(例如开挖布局、几何形状、应力、变形)和施工(例如工期、造价)的空间n.数... 详细信息

在矿山、地下发电站、地下核废料处理设施、地铁等地下工程的规划与设计过程中,需要把勘探(例如地质、地球物理、地球化学、地质统计、地下水、岩石特性)、工程(例如开挖布局、几何形状、应力、变形)和施工(例如工期、造价)的空间n.数据综合起来,以便作出合理的工程决策。随着勘测、分析计算与观测技术的不断提高,工程数据量和复杂程度与日俱增,在很多情况下人们仅仅利用现有数据的一小部分做出工程决策。最近,加拿大劳伦森大学开设了标志着目前科技最高水平的虚拟现实合作实验室。该虚拟现实实验室为地下工程规划和设计中所遇到的数据综合与解释提供一个独特的环境和设备,并通过将深层探矿调查及大型矿山规划和设计的例子来进一步展示如何把共通地质模型和虚拟现实这个独特的工具运用到地下工程的规划与设计中,以便领会复杂数据的空间关系,实现附加价值(如项目范围的数据综合化,改善对三维图形的理解,减少重复设计,加强项目小组之间的合作等)。最后,介绍在工程项目整体数据综合、矿山设计检验、岩石支护设计以及加拿大劳伦森大学地质力学研究中心开发的地质力学设计准则的三维可视化方面的成果和经验。

关键词：岩石力学共通地质模型虚拟现实地下工程规划与设计地质施工