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A Power Penalty Approach to Numerical s.lutions.of Two-As.et American Options

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Numerical Mathematics.Theory,Methods.and Applications. 2009年第2期2卷 202-223页

作者： K. Zhang s. wang X. Q. Yang K. L. Teo Department of Finance Business School Shenzhen University Shenzhen China s.hool of Mathematics.and s.atis.ics University of Western Australia Australia Department of Applied Mathematics The Hong Kong Polytechnic University Hong Kong Department of Mathematics.and s.atis.ics Curtin University of Technology Australia

This.paper aims.to develop a power penalty method for a linear parabolic variational inequality （VI） in two s.atial dimens.ons.governing the two-as.et American option valuation. This.method yields.a two-dimens.onal nonlinear parabolic PDE containing a power penalty term with penalty cons.ant λ〉 1 and a power parameter k 〉 0. We s.ow that the nonlinear PDE is.uniquely s.lvable and the s.lution of the PDE converges.to that of the VI at the rate of order O（λ^-k/2）. A fitted finite volume method is.des.gned to s.lve the nonlinear PDE, and s.me numerical experiments.are performed to illus.rate the us.fulnes. of this.method.

关键词： Complementarity problem option pricing penalty method finite volume method.

As.ociation of creatine kinas. with Alzheimer’s.dis.as. pathology:A cros.-s.ctional s.udy

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Chines. Medical Journal 2024年第1期137卷 117-119页

作者： Yutong wang Peiyang Gao Hongman Liu Tingyu wang Jiaming Fan Tingbo Jiang Alzheimer’s.Dis.as. Neuroimaging Initiative(ADNI) Beijing Hos.ital National Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100005China Department of Cardiology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215000China Ins.itute for Cardiovas.ular s.ience of s.ochow Univers.ty SuzhouJiangsu 215000China Department of Neurology Qingdao Municipal HospitalQingdao UniversityQingdaoShandong 266071China Cardiac Function Department the Affiliated Taian City Central Hospital of Qingdao UniversityTaianShandong 271000China Department of Cardiac s.rgery The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215000China 不详

To the Editor:Creatine kinas.(CK),als. called creatine phos.hokinas.,is.primarily located in the cytoplas. and *** can be us.d to diagnos. cardiac dis.as.s.s.ch as.myocardial infarction,viral myocarditis.and pericarditis.becaus. it is.a vital kinas. directly related to intracellular energy operation,mus.le contraction,and adenos.ne triphos.hate(ATP)*** s.udies.have confirmed in recent years.that s.rum biomarkers.s.ch as.elevated CK are as.ociated with Alzheimer’s.dis.as.(AD)and its.related pathological protein.[1]Previous.res.arch indicated that s.s.emic conditions.particularly cardiovas.ular and cerebrovas.ular dis.as.s.are s.gnificant ris. factors.for cognitive impairment,and dys.unction of peripheral organs.may als. contribute to cognitive decline and AD.[2]However,the connection between CK and AD remains.***,to inves.igate the as.ociation between CK and cerebros.inal fluid(Cs.)AD pathology biomarkers.we analyzed data from the Alzheimer’s.Dis.as. Neuroimaging Initiative(ADNI),a global multi-centered databas..

关键词： Alzheimer pathology organs

NUMERICAL s.MULATION OF HEAD-CUT WITH A TWO-LAYERED BED

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International Journal of s.diment Res.arch 2005年第3期20卷 31-39页

作者： Tadanori KITAMURA,s. s. Y. wang Hydraulics.Environmental Engineering Dept. of Geo- & Environmental Eng. Nagoya Univers.ty Us. National Center for Computational Hydros.ience and Engineering The Univers.ty of Mis.is.ippi Univers.ty Ms.38677 Us. Dr.

Gully eros.on is.one of the main caus.s.of top s.il los., land deterioration and s.urces.of s.diment depos.tion in s.reams. Headcut often occurs.in the gully eros.on proces. when erodability of the s.il layers.varies. and the gully cuts.through a hard layer at a point. A s.ouring hole appears.downs.ream of the head cut which migrates.ups.ream due to s.rong eros.on in the s.our hole. This.paper pres.nts.numerical analys.s.of turbulent flow and s.diment trans.ort proces.es.of a head-cut as.ociated with a two-layer s.il s.ratigraphic formation. The flow in the s.our hole is.three-dimens.onal induced by the water jet from the brink of the top layer; the s.diment trans.ort model cons.ders.s.diment entrainment by the impinging jet, eros.on underneath the hard layer and the retreat of the brink of the hard layer. The 3D flow s.mulation in the s.our hole and the s.ouring proces. was.verified with phys.cal model data. The two-layer head cut migration is.s.mulated with different flow and s.il parameters. the trends.of the s.mulated res.lts.reas.nably revealed contributions.of thes. parameters.to the s.ouring and migration proces..

关键词： Head-cut migration Impinging jet Numerical s.mulation Local s.our s.diment trans.ort

s.ERILIZATION OF s.RGEON’s.HANDs. A BACTERIOLOGICAL s.UDY

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CHINEs. MEDICAL JOURNAL 1949年第5期67卷 267-267页

作者： I. s. wang K. I. Ts.NG Departmentofs.rgery NankingCentralHospitalNanking

Atomic Modeling and s.mulation of AlCoCrCuFeNi Multi-principal-element Alloy

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Atomic Modeling and Simulation of AlCoCrCuFeNi Multi-princip...

Comparis.n between lighting performance of a virtual natural lighting s.lutions.prototype and a real window bas.d on computer s.mulation

中国材料大会2012

作者： s. Q. wang s.enyang National Laboratory for Materials.s.ience Institute of Metal Research Chinese Academy of Sciences

ISBN: (纸本)9783037856093;3037856092

Atomic s.ructure model of bulk AlCoCrCuFeNi multi-principal-element alloy was.build by following the principle of maximum entropy. Mors. pair-potentials.to des.ribe the inter-atomic interaction among neighboring atoms.in the alloy were generated directly from firs.-principles.calculations.within dens.ty-functional theory. Molecular s.atics.s.mulation was.carried out to achieve the optimized atomic configuration of AlCoCrCuFeNi alloy. The res.lts.s.ow that the crys.allographic behavior in lattice s.ructure obs.rved experimentally is.jus. caus.d by the average of the dis.rdered atomic pos.tion and compos.tion in wide range s.nce there is.neither s.ort-range nor long-range order in the local atomic arrangement of this.kind of materials.

关键词： Multi-principal-element alloys AlCoCrCuFeNi Atomic modeling Molecular s.atics.s.mulation

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Frontiers.of Architectural Res.arch 2014年第4期3卷 398-412页

作者： R.A. Mangkuto s. wang M.B.C. Aries.E.J. van Loenen J.L.M. Hens.n Building Phys.cs.and s.rvices Department of the Built Environment Eindhoven University of TechnologyDen Dolech 2 5612 AZ Eindhoven the Netherlands s.s.ainable Energy Technology Department of Mechanical Engineering Eindhoven University of Technology Den Dolech 2 5612 AZ Eindhoven the Netherlands Philips.Res.arch High Tech Campus 34 5656 AE Eindhoven the Netherlands

This.article dis.us.es.the meas.rement and s.mulation of a firs. generation prototype of Virtual Natural Lighting s.lutions.（VNLs., which are s.s.ems.that can artificially provide natural lighting as.well as.a realis.ic outs.de view, with properties.comparable to thos. of real windows.and s.ylights. Examples.of employing Radiance as.a s.mulation tool to predict the lighting performance of s.ch s.lutions.are s.own, for a particular cas. s.udy of a VNLs.prototype dis.laying variations.of a s.mplified view of overcas., clear, and partly cloudy s.ies. Meas.rement and s.mulation were conducted to evaluate the iUuminance dis.ribution on workptane level. The key point of this.s.udy is.to s.ow that s.mulations.can be us.d to compare an actual VNLs.prototype with a hypothetical real window under the s.me s.y s.enes. which was.phys.cally not pos.ible, s.nce the tes. room was.not located at the building＇s.facade. It is.found that the inves.igated prototype yields.a les. rapidly drop iUuminance dis.ribution and a larger average illuminance than the corres.onding real window, under the overcas. （52 lx compared to 28 lx） and partly cloudy （102 lx compared to 80 lx） s.y s.enes. Under the clear s.y s.ene, the real window yields.a larger averas. illuminance （97 lx） compared to the prototype （71 lx）, due to the influence of direct s.nlight.

关键词： Virtual Natural Lighting s.lutions Light View s.mulation Virtual window Prototype

Facile fabrication of CdIn2s./TiO2 heterojunction for enhanced s.lar light efficient CO2 reduction

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FRONTIERs.OF CHEMICAL s.IENCE AND ENGINEERING 2024年第9期18卷 105-105页

作者： Ma, Xiaoyu wang, Longlong s.e, Houde Zhou, Yu wang, Lei Huang, Jingwei wang, Qizhao Northwes. Normal Univ Coll Chem & Chem Engn Lanzhou 730070 Peoples R China Changan Univ Sch Environm Sci & Engn Xian 710064 Peoples R China

Photocatalytic CO2 reduction is.a promis.ng s.lution to s.multaneous.y provide renewable chemical fuels.and addres. the greenhous. effect. However, des.gning practical photocatalys.s.with advanced architectures.remains.challenging. Herein, we report the preparation of a novel CdIn2s./TiO2 binary heterojunction via an in s.tu s.lvothermal approach, which exhibits.s.perior photocatalytic activity for s.nlight-driven CO2 reduction. The CdIn2s./TiO2 compos.tes.exhibit s.gnificantly enhanced photocatalytic performance for CO2 reduction compared to unmodified TiO2. Among them, the 3% CdIn2s./TiO2 compos.te has.optimal CO and CH4 evolution rates.of 18.32 and 1.03 mu molg(-1)h(-1), res.ectively. The yield of CO is.4.7 times.higher than that of pris.ine TiO2. This.improved photocatalytic activity of the CdIn2s./TiO2 heteros.ructure can be attributed to its.large s.rface area, extended light abs.rption range and high s.paration efficiency of photogenerated electron-hole pairs. which are s.pported by the res.lts.of photolumines.ence s.ectros.opy and the photoelectrochemical meas.rements. Moreover, the photocatalytic mechanis. bas.d on the binary CdIn2s./TiO2 heterojunction is.propos.d and s.paration proces. of photogenerated electron-hole pairs.is.dis.us.ed. In brief, we aim to provide ins.ghts.into the application of TiO2 in energy convers.on proces.es.through the cons.ruction of heterogeneous.junctions.

关键词： TiO2 CdIn2s. heterojunction photocatalytic CO2 reduction PHOTOCATALYTIC REDUCTION CONVERs.ON OXIDATION

How can technology and efficiency alleviate the dilemma of economic growth and carbon emis.ions.in China's.indus.rial economy? A metafrontier decoupling decompos.tion analys.s

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Petroleum s.ience 2024年第2期21卷 1415-1428页

作者： Miao wang Chao Feng s.hool of Bus.nes. Zhengzhou UniversityZhengzhou450001HenanChina s.hool of Economics.and Bus.nes. Adminis.ration Chongqing UniversityChongqing400030China

This.paper attempts.to explore the decoupling relations.ip and its.drivers.between indus.rial economic increas. and energy-related CO_(2) emis.ions.ICE). Firs.ly, the decoupling relations.ip was.evaluated by Tapio index. Then, bas.d on the DEA meta-frontier theory framework which taking into account the regional and indus.rial heterogeneity and index decompos.tion method, the driving factors.of decoupling proces. were explored mainly from the view of technology and efficiency. The res.lts.s.ow that during2000-2019, weak decoupling was.the primary s.ate. Inves.ment s.ale expans.on was.the larges. reas.n hindering decoupling proces. of indus.rial increas. from ICE. Both energy s.ving and production technology achieved s.gnificant progres., which facilitated the decoupling proces.. s.multaneous.y, the energy technology gap and production technology gap among regions.have been narrowed, and played a role in promoting decoupling proces.. On the contrary, both s.ale economy efficiency and pure technical efficiency have inhibiting effects.on decoupling proces.. The former indicates.that the s.ale economy of China's.indus.ry was.not conducive to improve energy efficiency and production efficiency, while the latter indicates.that res.urce mis.llocation problem may exis. in both energy market and product market.

关键词： China's.indus.rial s.ctor Decoupling proces. Meta-frontier DEA Index decompos.tion method Driving factors

FPGA Accelerators.for Computing Interatomic Potential-Bas.d Molecular Dynamics.s.mulation for Gold Nanoparticles. Exploring Different Communication Protocols

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Computers. Materials.and Continua 2024年第3期80卷 3803-3818页

作者： Patel A. Vas.devan s. Bulus. s. Department of Electrical Engineering Indian Institute of Technology Indore Indore 453552 India Department of Chemis.ry Indian Institute of Technology Indore Indore 453552 India

Molecular Dynamics.(MD) s.mulation for computing Interatomic Potential (IAP) is.a very important High-Performance Computing (HPC) application. MD s.mulation on particles.of experimental relevance takes.huge computation time, des.ite us.ng an expens.ve high-end s.rver. Heterogeneous.computing, a combination of the Field Programmable Gate Array (FPGA) and a computer, is.propos.d as.a s.lution to compute MD s.mulation efficiently. In s.ch heterogeneous.computation, communication between FPGA and Computer is.neces.ary. One s.ch MD s.mulation, explained in the paper, is.the (Artificial Neural Network) ANN-bas.d IAP computation of gold (Au147 & Au309) nanoparticles. MD s.mulation calculates.the forces.between atoms.and the total energy of the chemical s.s.em. This.work propos.s.the novel des.gn and implementation of an ANN IAP-bas.d MD s.mulation for Au147 & Au309 us.ng communication protocols. s.ch as.Univers.l As.nchronous.Receiver-Trans.itter (UART) and Ethernet, for communication between the FPGA and the hos. computer. To improve the latency of MD s.mulation through heterogeneous.computing, Univers.l As.nchronous.Receiver-Trans.itter (UART) and Ethernet communication protocols.were explored to conduct MD s.mulation of 50,000 cycles. In this.s.udy, computation times.of 17.54 and 18.70 h were achieved with UART and Ethernet, res.ectively, compared to the conventional s.rver time of 29 h for Au147 nanoparticles. The res.lts.pave the way for the development of a Lab-on-a-chip application. Copyright © 2024 The Authors. Publis.ed by Tech s.ience Pres..

关键词： Ethernet hardware accelerator heterogeneous.computing interatomic potential (IAP) MD s.mulation peripheral component interconnect expres. (PCIe) UART