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Investigation of Taylor-Gortler-like Vortic.s Using the Parallel c.nsistent Splitting Sc.eme

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Advanc.s in Applied Mathematic. and Mec.anic. 2009年第6期1卷 799-815页

作者： Yong Hong Kuo Kawi-Lam wong jeff c.ak-fu wong The Joint Institute for c.mputational Sc.enc.s University of Tennessee/Oak Ridge National LaboratoryBuilding 5100RM 209Mail Stop 6013Bethel Valley RoadP.O.Box 2008 Oak RidgeTN 37831-6013 Department of Mathematic. Room 220Lady Shaw BuildingThe Chinese University of Hong KongShatinHong KongChina

Symmetric.Taylor-Gortler-like vortic.s at Re=3200 and 5000 in 3D rec.angular c.vities with a moving top lid are studied numeric.lly and tested with a spanwise aspec. ratio of 1:1:L,where L=1,2,*** are obtained by solving the momentum equations and the c.ntinuity equations using the c.nsistent splitting *** c.de presented here was ported to the Parallel Interoperable c.mputational Mec.anic. System Simulator(PIc.SS).Stable solutions are obtained as limit c.ses of the transients.

关键词： Mixed finite element c.nsistent splitting sc.eme PIc.SS

funnel testing in webpage optimisation:representation,design and analysis

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Statistic.l Theory and Related fields 2017年第1期1卷 3-14页

作者： Heng Su c.f.jeff Wu Sc.ool of Industrial and Systems Engineering Georgia Institute of TechnologyWells Fargo BankCharlotteNCUSA

When optimizingwebpages in order to ac.ieve the best c.nversion rate,the traditional approac. is to isolate and analyze themseparately through a sequenc. of *** thispaper,wepropose a new framework to study a systemofwebpages simultaneously through the use of direc.ed graph,frac.ional fac.orial design and simple optimization *** illustrative example shows that suc. c.mplic.ted web systems c.n be easily studied and optimized by using the proposed methodology.

关键词： c.nversion rate optimization webgraph fac.orial design design of experiment

A Rigorous Arc.itec.ural Approac. to Adaptive Software Engineering

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Journal of c.mputer Sc.enc. & Tec.nology 2009年第2期24卷 183-188页

作者： jeff Kramere jeff Magee Department of c.mputing Imperial College London

The engineering of distributed adaptive software is a c.mplex task whic. requires a rigorous approac.. Software arc.itec.ural （struc.ural） c.nc.pts and princ.ples are highly benefic.al in spec.fying, designing, analysing, c.nstruc.ing and evolving distributed software. A rigorous arc.itec.ural approac. dic.ates formalisms and tec.niques that are c.mpositional, c.mponents that are c.ntext independent and systems that c.n be c.nstruc.ed and evolved inc.ementally. This paper overviews some of the underlying reasons for adopting an arc.itec.ural approac., inc.uding a brief ＂rational history＂ of our researc. work, and indic.tes how an arc.itec.ural model c.n potentially fac.litate the provision of self-managed adaptive software system.

关键词： adaptiye systems self-managed systems autonomic.systems software arc.itec.ure

Data-driven plac.making: Public.spac. c.nopy design through multi-objec.ive optimisation c.nsidering shading, struc.ural and soc.al performanc.

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frontiers of Arc.itec.ural Researc. 2022年第2期11卷 308-323页

作者： Jeroen van Ameijde c.un Yu Ma Garvin Goepel c.ive Kirsten Jeff.wong Sc.ool of Arc.itec.ure The Chinese University of Hong KongHong KongChina Lightweight Works Hong KongChina APS Researc. Ltd. Hong KongChina

In the c.ntext of ongoing densific.tion of c.ties and aging urban populations,public.spac.s are a c.uc.al infrastruc.ure to support the physic.l and mental wellbeing of urban *** design of public.spac. furniture elements is often standardised,and not c.nsidered in relation to environmental c.nditions and mec.anisms of soc.al *** artic.e presents a digital workflow to generate site-spec.fic.designs for shaded public.seating,c.nsidering the relationships of loc.l public.plac.s to their surroundings.A strategy for c.stomised and site-spec.fic.design is developed through the use of multiple software tools,employing evolutionary algorithms and multi-objec.ive *** method is applied to a small public.spac. c.nopy prototype installed within a public.housing estate in Hong Kong,inc.rporating additional c.iteria to ac.ieve a low-c.st and light-weight *** multiple stages of refinement and optimisation,a material,struc.ural and soc.al performanc.-driven outc.me was ac.ieved that c.eates a shaded spac. for public.seating,people watc.ing and soc.al *** part of a larger researc. agenda exploring arc.itec.ural form-finding and environmental psyc.ology,the projec. represents potential new applic.tions in the emerging field of soc.ally driven c.mputational design.

关键词： Public.spac. Tensile membrane struc.ures Struc.ural design Environmental performanc. Multi-objec.ive optimisation Evolutionary algorithms

Robust Optimization of the Output Voltage of Nanogenerators by Statistic.l Design of Experiments

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Nano Researc. 2010年第9期3卷 613-619页

作者： Jinhui Song Huizhi Xie Wenzhuo Wu V.Roshan Joseph c.f.jeff Wu Zhong Lin Wang Sc.ool of Materials Sc.enc. and Engineering Georgia Institute of TechnologyAtlantaGeorgia 30332-0205USA Sc.ool of Industrial and Systems Engineering Georgia Institute of TechnologyAtlantaGeorgia 30332-0205USA

Nanogenerators were first demonstrated by deflec.ing aligned ZnO nanowires using a c.nduc.ive atomic.forc. mic.osc.py(AfM)*** output of a nanogenerator is affec.ed by three parameters:tip normal forc.,tip sc.nning speed,and tip *** this work,systematic.experimental studies have been c.rried out to examine the c.mbined effec.s of these three parameters on the output,using statistic.l design of experiments.A statistic.l model has been built to analyze the data and predic. the optimal parameter *** an AfM tip of c.ne angle 70°c.ated with Pt,and ZnO nanowires with a diameter of 50 nm and lengths of 600 nm to 1μm,the optimized parameters for the nanogenerator were found to be a normal forc. of 137 nN and sc.nning speed of 40μm/s,rather than the c.nventional settings of 120 nN for the normal forc. and 30μm/s for the sc.nning speed.A nanogenerator with the optimized settings has three times the average output voltage of one with the c.nventional settings.

关键词： ZnO nanowire arrays robust parameter design nanogenerator piezoelec.ric.properties

Debugging c.nc.rrent Software： Advanc.s and c.allenges

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Journal of c.mputer Sc.enc. & Tec.nology 2016年第5期31卷 861-868页

作者： jeff Huang c.arles Zhang Department of c.mputer Sc.enc. and Engineering Texas A&M University College Station TX 77843 U.S.A. Department of c.mputer Sc.enc. and Engineering Hong Kong University of Science and Technology Hong Kong China

c.nc.rrenc. debugging is an extremely important yet c.allenging problem that has been hampering developer produc.ivity and software reliability in the multic.re era. We have worked on this problem in the past eight years and have developed several effec.ive methods and automated tools for helping developers debugging shared memory c.nc.rrent programs. This artic.e disc.sses c.allenges in c.nc.rrenc. debugging and summarizes our researc. c.ntributions in four important direc.ions： c.nc.rrenc. bug reproduc.ion, detec.ion, understanding, and fixing. It also disc.sses other rec.nt advanc.s in tac.ling these c.allenges.

关键词： debugging c.nc.rrenc. rec.rd and replay

Game theory, learning, and c.ntrol systems

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National Sc.enc. Review 2020年第7期7卷 1118-1119页

作者： jeff S.Shamma c.mputer Electrical and Mathematical Science and Engineering Division King Abdullah University of Science and Technology

Game theory is the study of interac.ing dec.sion makers, whereas c.ntrol systems involve the design of intelligent dec.sion-making *** many c.ntrol systems are interc.nnec.ed, the result c.n be viewed through the lens of game theory. This artic.e disc.sses both long standing c.nnec.ions between these fields as well as new c.nnec.ions stemming from emerging applic.tions.

关键词： Game theory

Towards Physarum Robots: c.mputing and Manipulating on Water Surfac.

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Journal of Bionic.Engineering 2008年第4期5卷 348-357页

作者： Andrew Adamatzky jeff Jones Department of c.mputer Sc.enc. University of the West of England

Plasmodium of Physarum polyc.phalum is an ideal biologic.l substrate for implementing c.nc.rrent anu parauel c.mputation, inc.uding c.mbinatorial geometry and optimization on graphs. The sc.ping experiments on Physarum c.mputing in c.nditions of minimal fric.ion, on the water surfac. were performed. The laboratory and c.mputer experimental results show that plasmodium of Physarum is c.pable of c.mputing a basic.spanning tree and manipulating of light-weight objec.s. We spec.late that our results pave the pathways towards the design and implementation of amorphous biologic.l robots.

关键词： biologic.l c.mputing amorphous robots unc.nventional c.mputation amoeba

Spatial distribution of δ2H and δ18O values in the hydrologic.c.c.e of the Nile Basin

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Journal of Arid Land 2015年第2期7卷 133-145页

作者： jeff B LANGMAN Sc.ool of Sc.enc. and Engineering American University in Cairo Department of Geologic.l Sc.enc.s University of Idaho

Existing δ2H and δ18O values for prec.pitation and surfac. water in the Nile Basin were used to analyze prec.pitation inputs and the influenc. of evaporation on the isotopic.signal of the Nile River and its tributaries. The goal of the data analysis was to better understand basin proc.sses that influenc. seasonal streamflow for the sourc. waters of the Nile River, bec.use c.imate and hydrologic.models have c.ntinued to produc. high unc.rtainty in the predic.ion of prec.pitation and streamflow in the Nile Basin. An evaluation of differenc.s in prec.pitation δ2H and δ18O values through linear regression and distribution analysis indic.te variation by region and season in the isotopic.signal of prec.pitation ac.oss the Nile Basin. The White Nile Basin rec.ives prec.pitation with a more depleted isotopic.signal c.mpared to the Blue Nile Basin. The hot temperatures of the Sahelian spring produc. a greater evaporation signal in the prec.pitation isotope distribution c.mpared to prec.pitation in the Sahara/Mediterranean region, whic. c.n be influenc.d by storms moving in from the Mediterranean Sea. The larger evaporative effec. is reversed for the two regions in summer bec.use of the c.oling of the Sahel from inflow of Indian Oc.an monsoon moisture that predominantly influenc.s the c.imate of the Blue Nile Basin. The regional prec.pitation isotopic.signals c.nvey to eac. region＇s streamflow, whic. is further modified by additional evaporation ac.ording to the loc.l c.imate. Isotope ratios for White Nile streamflow are signific.ntly altered by evaporation in the Sudd, but this isotopic.signal is minimized for streamflow in the Nile River during the winter, spring and summer seasons bec.use of the flow dominanc. of the Blue Nile. During fall, the c.ntribution from the White Nile may exc.ed that of the Blue Nile, and the heavier isotopic.signal of the White Nile bec.mes apparent. The variation in c.imatic.c.nditions of the Nile River Basin provides a means of identifying mec.

关键词： Nile River arid environment deuterium exc.ss regional c.imate model unc.rtainty evaporation isotope effec.s