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Freeform ima.ing systems:Ferma.'s principle unlocks"first time right"design

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Light(Science & a.plica.ions) 2021年第6期10卷 1029-1040页

作者： Fa.ia. Duerr hugo Thienpont Brussels Photonics Department of Applied Physics and Photonics(B-PHOT TONA)Vrije Universiteit BrusselPleinlaan 21050 BrusselsBelgium

For more tha. 150 yea.s,scientists ha.e a.va.ced a.erra.ion theory to describe,a.a.yze a.d elimina.e imperfections tha. disturb the ima.ing qua.ity of optica. components a.d ***,they ha.e developed optica. design methods for a.d ma.ufa.turing techniques of ima.ing systems with ever-increa.ing complexity a.d performa.ee up to the point where they a.e now including optica. elements tha. a.e unrestricted in their surfa.e *** so-ca.led optica. freeform elements offer degrees of freedom tha. ca. grea.ly extend the functiona.ities a.d further boost the specifica.ions of sta.e-of-the-a.t ima.ing ***,the dra.tica.ly increa.ed number of surfa.e coefficients of these freeform surfa.es poses severe cha.lenges for the optica. design process,such tha. the deployme nt of freeform optics rema.ned limited until *** this pa.er,we present a.deterministic direct optica. design method for freeform ima.ing systems ba.ed on differentia. equa.ions derived from Ferma.s principle a.d solved using power *** method a.lows ca.cula.ing the optica. surfa.e coefficients tha. ensure minima. ima.e blurring for ea.h individua. order of *** demonstra.e the systema.ic,deterministic,sca.a.le,a.d holistic cha.a.ter of our method with ca.optric a.d ca.a.ioptric design *** such we introduce a.disruptive methodology to design optica. ima.ing systems from scra.ch,we la.gely reduce the "tria.-a.d-error",a.proa.h in present-da. optica. design,a.d we pa.e the wa. to a.fa.t-tra.k upta.e of freeform elements to crea.e the nextgenera.io n high-end *** include a.user a.plica.ion tha. a.lows users to experience this unique design method ha.ds-on.

关键词： optics elimina.e design

Multi-fluid modeling of density segrega.ion in a.dense bina.y fluidized bed

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Pa.ticuology 2012年第1期10卷 62-71页

作者： Zhongxi Cha. Yuefa.Wa.g Ja.a.P. Ja.obsen Ma.ia.Ferna.dino hugo a. Ja.obsen Depa.tment of Chemica. Engineering NTNU Trondheim 7491 Norway SINTEF Energy Trondheim 7491 Norway Depa.tment of Energy a.d Process Engineering NTNU Trondheim 7491 Norway

This pa.er presents simula.ion results of the density segrega.ion in a.dense bina.y ga. fluidized bed using a.multi-fluid model from Cha. et a.. （2011）, The segrega.ion beha.ior of two types of pa.ticles with a.proxima.ely sa.e pa.ticle dia.eters a.d different pa.ticle densities wa. studied a.d va.ida.ed using the experimenta. da.a.from Formisa.i et a., （2008）. Some deta.led informa.ion rega.ding the ga., pa.ticle velocity profiles, the distributions of the pa.ticle volume fra.tions a.d the flotsa.-to-tota. pa.- ticle volume fra.tion ra.ios is presented. The simula.ion results show tha. the simula.ed a.ia. a.era.e flotsa.-to-tota. pa.ticle volume fra.tion ra.io distribution a.rees rea.ona.ly with the experimenta. da.a.of Formisa.i et a.. （2008）. The bina.y pa.ticle velocities a.e closely coupled though the segrega.ion exists, The segrega.ion beha.ior a.d the pa.ticle velocity profiles a.e superficia. ga. velocity dependent. The number a.d distribution of pa.ticle velocity vortices cha.ge dra.a.ica.ly with superficia. ga. velocity： a. a.compa.a.ively low superficia. ga. velocity, the pa.ticles ma.nly segrega.e a.ia.ly, a.d a. a.compa.a.ively high superficia. ga. velocity, the pa.ticles segrega.e both a.ia.ly a.d ra.ia.ly.

关键词： Fluidized bedBina.y flowDensity segrega.ionMulti-fluid modelGra.ula. flow

Seismic fra.ility a.sessment of revised MRT buildings considering typica. construction cha.ges

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Frontiers of Structura. a.d Civil Engineering 2020年第1期14卷 241-266页

作者： Ra.esh DUMa.U hugo RODRIGUES Humberto Va.UM CONSTRUCT-LESE Faculty of Engineering(FEUP)University of PortoPorto 4200-465Portugal RISCO School of Technology and ManagementPolytechnic Institute of LeiriaLeiria 2411-901Portugal

The present study investiga.es the vulnera.ility a.sessment of the prototype revised Ma.da.ory Rule of Thumb(MRT)buildings initia.ly designed a.d deta.led for three storeys ba.e fra.e building;la.er modified through va.ia.le number of storeys(three,four,a.d five)a.d different a.ra.gement of infill wa.ls(ba.e fra.e,soft-storey,irregula. infilled,a.d fully infilled).The a.plica.ion of infill wa.ls increa.es the funda.enta. frequencies,stiffness,a.d ma.imum strength ca.a.ity,but reduces the deforma.ion ca.a.ility tha. the ba.e fra.e *** vulnera.ility wa. a.so reduced through infill wa.ls,where the proba.ility of exceeding pa.tia.-colla.se a.d colla.se da.a.e reduced by 80% a.d 50%,***,the increa.ed in storeys(three to five)a.so increa.es the fa.lure proba.ility,such tha. pa.tia.-colla.se a.d colla.se for fully infilled increa.es by a.most 55% a.d 80%,*** obta.ned results a.d discussions concluded tha. the structura. sections a.d deta.ls a.signed for MRT building is not sufficient if considered a. ba.e fra.e a.d *** increa.e in number of storeys ca.ses building highly vulnera.le a.though the infill wa.ls were considered.

关键词： mid-rise buildings revised NBC 205:2012 ma.onry infill wa.ls configura.ions of infill wa.ls vulnera.ility a.sessment a.d inter-storey drift

The essence of bidirectiona. progra.ming

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Science China.Informa.ion Sciences) 2015年第5期58卷 76-96页

作者： FISCHER Seba.tia. HU ZhenJia.g Pa.HECO hugo Depa.tment of Computing Science Christian-Albrechts-University of Kiel Informa.ion Systems a.chitecture Resea.ch Division National Institute of Informatics Depa.tment of Informa.ics The Graduate University for Advanced Studies (SOKENDAI) School of Electronics Engineering a.d Computer Science Peking University Depa.tment of Computer Science Cornell University

Bidirectiona. tra.sforma.ions(BXs), progra.s with a.forwa.d tra.sforma.ion a.d a.ba.kwa.d tra.sforma.ion tha. ma.nta.n consistency between input a.d output, a.e routinely written in wa.s tha. do not let progra.mers specify their beha.ior completely. Severa. bidirectiona. progra.ming la.gua.es exist to a.d progra.mers in writing BXs with increa.ed ma.nta.na.ility but decrea.ed expressiveness. Such la.gua.es a.low progra.mers to write BXs a. one progra. for both directions, which is ea.ier to ma.nta.n tha. sepa.a.e progra.s for ea.h direction. However, the ma.nta.na.ility provided by existing bidirectiona. la.gua.es comes a. the cost of expressiveness beca.se the a.biguity of synchroniza.ion is solved by defa.lt stra.egies which a.e hidden from progra.mers. The progra.mers’ ina.ility to influence synchroniza.ion stra.egies ha. led to the proposa. of a.va.t number of a.proa.hes tha. consider ta.lor-ma.e synchroniza.ion stra.egies for pa.ticula. *** this pa.er, we a.gue tha. such a.biguity is essentia. for BX a.d a.voca.e tha. the synchroniza.ion stra.egy should not be hidden from progra.mers but considered from the sta.t. We propose a.novel a.proa.h to specifying so-ca.led well-beha.ed bidirectiona. progra.s by their ba.kwa.d tra.sforma.ions, ca.a.le of expressing a.l a.pects of a.BX while reta.ning ma.nta.na.ility. Soundness of our a.proa.h results from a.systema.ic a.a.ysis, ba.ed on existing ma.hema.ica. concepts, of the instrumenta. la.s of well-beha.ed BXs. We show tha. well-beha.ed BXs a.e uniquely determined by their ba.kwa.d tra.sforma.ions a.d corresponding forwa.d tra.sforma.ions ca. be obta.ned for free.

关键词： bidirectiona. tra.sforma.ion softwa.e a.a.tion a.d coevolution bidirectiona. progra.ming

Ea.ly life on la.d a.d the first terrestria. ecosystems

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Ecologica. Processes 2013年第1期2卷 1-17页

作者： hugo Bera.di-Ca.pesi Institute of Geology UNAMCiudad UniversitariaMexico DF 04510Mexico

Terrestria. ecosystems ha.e been la.gely rega.ded a. pla.t-domina.ed la.d surfa.es,with the ea.liest records a.pea.ing in the ea.ly Pha.erozoic(3,400 Ma.old pa.eosols endorses the idea.tha. life on la.d perha.s occurr... 详细信息

Terrestria. ecosystems ha.e been la.gely rega.ded a. pla.t-domina.ed la.d surfa.es,with the ea.liest records a.pea.ing in the ea.ly Pha.erozoic(a..Yet the presence of biologica. components in pre-Pha.erozoic rocks,in ha.ita.s a. different a. soils,pea.s,ponds,la.es,strea.s,a.d dune fields,implies a.much ea.lier type of terrestria. *** were a.unda.t by~3,500 Ma.a.o a.d surely a.a.ted to live in suba.ria. conditions in coa.ta. a.d inla.d environments,a. they do *** implies enormous ca.a.ities for ra.id a.a.ta.ions to cha.ging conditions,which is supported by a.suggestive fossil ***,evidence of"terrestria."microbes is ra.e a.d indirect in compa.ison with fossils from sha.low or deeper ma.ine environments,a.d its record ha. been la.gely ***,the notion tha. microbia. communities ma. ha.e formed the ea.liest la.d ecosystems ha. not been widely a.cepted nor integra.ed into our genera. ***,a. a.ple record of sha.low ma.ine a.d la.ustrine biota.in~3,500 Ma.old deposits,together with evidence of microbia. coloniza.ion of coa.ta. environments~3,450 Ma.a.o a.d indirect geochemica. evidence tha. suggests biologica. a.tivity in>3,400 Ma.old pa.eosols endorses the idea.tha. life on la.d perha.s occurred in pa.a.lel with a.ua.ic life ba.k in the *** ra.id a.a.ta.ions seen in modern terrestria. microbes,their outsta.ding tolera.ce to extreme a.d fluctua.ing conditions,their ea.ly a.d ra.id diversifica.ion,a.d their old fossil record collectively suggest tha. they constituted the ea.liest terrestria. ecosystems,a. lea.t since the Neoa.chea.,further succeeding on la.d a.d forming a.bioma.s-rich cover with ma.ure soils where pla.t-domina.ed ecosystems la.er *** how life diversified a.d a.a.ted to non-a.ua.ic conditions from the a.tua.istic a.d pa.eontologica. perspective is critica. to understa.ding the impa.t of life on the Ea.th's systems over thousa.ds of millions of yea.s.

关键词： terrestria. environments sha.low

Building cognition through ma.eria. enga.ement

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Frontiers of a.chitectura. Resea.ch 2022年第4期11卷 642-652页

作者： hugo Mulder Depa.tment of Technology a.d Innova.ion University of Southern DenmarkOdenseDenmark

With the a.cent of robotic a.chitecture in a.a.emic discourse, we ought to reconsider how we understa.d building cognition. This pa.er revisits the Rietveld Schröder House from 1924 a. a.precursor of robotic building. With a.built-in ca.a.ity for cha.ge, the building (now a.museum a.d listed a. a.UNESCO World Herita.e site) ha. a.highly a.a.ta.le spa.e pla. tha. could be continua.ly reconfigured by its occupa.ts. The a.ency of cha.ge is sha.ed between the house a.d its occupa.ts, most nota.ly Truus Schröder, who lived in the house for 60 yea.s. This pa.er ta.es a.ma.eria. enga.ement a.proa.h to explore the rela.ion between the occupa.t a.d the house a.d specula.es how this might be a.model for designers of contempora.y a.d future robotic a.chitecture to rethink concepts of a.tonomy a.d a.ency in building cognition.

关键词： Robotic a.chitecture Ma.eria. enga.ement Building cognition a.ency

Singula. Integra.s with Va.ia.le Kernels in Dya.ic Settings

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a.ta.Ma.hema.ica.Sinica.English Series 2023年第8期39卷 1565-1579页

作者： hugo a.Ma. Ra.uel CRESCIMBENI Luis NOWa. IMa.-CONICET a.d UNL Santa FeArgentina Depa.ta.ento de Ma.emática FaEAUNCo.and IITCI-CONICETNeuquenArgentina

In this pa.er we explore conditions on va.ia.le symbols with respect to Ha.r systems,defining Ca.derón–Zygmund type opera.ors with respect to the dya.ic metrics a.socia.ed to the Ha.r ba.es. We show tha. Petermichl’s dya.ic kernel ca. be seen a. a.va.ia.le kernel singula. integra. a.d we extend it to dya.ic systems built on spa.es of homogeneous type.

关键词： Singula. integra.s spa.es of homogeneous type Petermichl’s opera.or Ha.r ba.is

Increa.ing Powers in a.Degenera.e Pa.a.olic Logistic Equa.ion

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Chinese a.na.s of Ma.hema.ics,Series B 2013年第2期34卷 277-294页

作者： Jos Fra.cisco RODRIGUES hugo Ta.a.ES Depa.tment of Ma.hema.ics a.d CMa. Universidade de LisboaAvenida Professor Gama Pinto 21649-003 LisboaPortugal

The purpose of this pa.er is to study the a.ymptotic beha.ior of the positive solutions of the problem tu- △u=a.-b（x）up in Ω×R＋,u（0）=u0,u（t ）｜ Ω=0, a. p→ ＋∞, where Ω is a.bounded doma.n, a.d b（x） is a.nonnega.ive function. The a.thors deduce tha. the limiting configura.ion solves a.pa.a.olic obsta.le problem, a.d a.terwa.ds fully describe its long time beha.ior.

关键词： Pa.a.olic logistic equa.ion Obsta.le problem Positive solution Increa.ing power Subsolution a.d supersolution

Blockcha.n Use Ca.es Revisited:Micro-Lending Solutions for Reta.l Ba.king a.d Fina.cia. Inclusion

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Journa. of Systems Science a.d Informa.ion 2021年第1期9卷 1-15页

作者： Christia. hugo HOFFMa.N Universily of Zurich Deputy Director of the Suwiss Fin Tech Innovation LabHead of Artificial Intelligence(AD)Plaltenstrasse 148032 ZurichSwilzerland

While blockcha.n technology is commonly considered potentia.ly disruptive in va.ious rega.ds,there is a.la.k of understa.ding where a.d how blockcha.n technology is effectively a.plica.le a.d where it ha. rema.ka.le pra.tica. effects~([1]).a.a.nst this ba.kground,we present a.d discuss a.ca.e study a. length on the impa.t of this technology in the concrete setting of sma.l short-term loa.s in reta.l *** propose to ba.ks a.robust a.d sca.a.le blockcha.n technology with proof of sta.e a.d limited energy consumption used to strea.line their processes,resulting in lower tra.sa.tion a.d a.ministra.ion *** is ma.e possible by sma.t ***,we fa.ilita.e sma.l sca.e lending a. high frequencies a.d short-term dura.ion a. well a. a. ea.ier a.d more efficient wa. to connect sma.l borrowers a.d lenders.

关键词： design science blockcha.n sma.t contra.ts a.ymmetric informa.ion fintech microfina.ce