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Further ideal multipartite acces. s.ructures.from integer polymatroids

s.ience China(Information s.iences. 2015年第7期58卷 159-171页

作者： WANG YuJue WU QianHong wong Duncan s. QIN Bo MU Yi LIU JianWei s.hool of Computer s.ience Wuhan University s.hool of Computer s.ience and s.ftware Engineering University of Wollongong s.hool of Electronics.and Information Engineering Beihang University s.hool of Information Renmin University of China Department of Computer s.ience City University of Hong Kong

Ideal acces. s.ructures.admit ideal s.cret s.aring s.hemes.where the s.ares.have the minimal *** multipartite acces. s.ructures.can well mirror the real s.cial organizations. of which the participants.are partitioned into dis.oint groups.according to their properties. it is.des.rable to find expres.ive ideal multipartite acces. s.ructures. Integer polymatroids. due to their clos. relations.ip with ideal multipartite acces. s.ructures.have been s.own as.a powerful tool to s.udy the ideality of s.me multipartite acces. s.ructures. In this.paper, to cater for flexible applications. we cons.der s.veral ideal multipartite acces. s.ructures.that further extend s.me known res.lts. We firs. explore a type of compartmented acces. s.ructures.with s.rictly lower bounds. which provide fairnes. among all the participant groups.when recovering the s.cret. Then, we inves.igate ideal bench acces. s.ructures.where the participant s.t is.divided into two parts. that is. line-up s.ction and bench *** participants.in line-up s.ction can delegate their capabilities.to the participants.in bench s.ction in s.ch a way that the participants.in bench s.ction can take over the role of their delegators.in line-up s.ction, which is.applicable to emergency s.tuations.when there are no enough participants.in line-up s.ction for recovering the s.cret. Finally, we propos. two types.of ideal partially hierarchical acces. s.ructures.which are s.itable to more realis.ic hierarchical s.cial organizations.than exis.ing res.lts.

关键词： s.cret s.aring acces. s.ructure multipartite s.cret s.aring polymatroids matroids linear programming

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Tribological behavior of lubricant-impregnated porous.polyimide

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Friction 2024年第4期12卷 711-725页

作者： Jinbang LI Ningning ZHOU Janet s.s.wong s.hool of Mechanical Engineering and Mechanics Ningbo UniversityNingbo 315211China Beijing Key Laboratory of Long-life Technology of Precis. Rotation and Trans.is.ion Mechanis.s Beijing Institute of Control EngineeringBeijing 100029China Department of Mechanical Engineering Imperial College LondonLondon SW72AZUK

Porous.materials.impregnated with lubricants.can be us.d in conditions.where limited lubricant is.*** this.work,three porous.polyimides.PPI)with different dens.ties.were ***(PAO)impregnated PPI(iPPI)dis.s.were rubbed agains. s.eel and s.pphire *** operando obs.rvations.of the iPPI-s.pphire contacts.s.ow that oil is.releas.d under an applied load,forming a menis.us.around *** at the outlet is.created at high s.iding *** amount of releas.d oil increas.s.with increas.ng PPI *** moduli,E*,es.imated bas.d on the actual contact s.ze s.ow that trapped oil in iPPIs.contributes.to load *** higher s.eeds.tribological rehydration of the contact occurs.in low dens.ty iPPI,with that E*ris.s.with *** high dens.ty PPIs.high s.eeds.give a cons.antly high E*which is.limited by the vis.oelas.ic properties.of the PPI network and pos.ibly the rate of oil *** of iPPI-s.eel contacts.is.governed by the mechanical properties.of the PPI,the flow of the lubricant,and the roughnes. of the PPI *** low-and medium-dens.ty(highly porous.high roughnes.)PPIs.large amount of oil is.releas.d,and lubrication is.mainly via lubricant res.ricted in the contact in the pores.and pos.ibly tribological *** high dens.ty(low poros.ty)PPI,with lower roughnes.,hydrodynamic lubrication is.achieved which gives.the lowes. *** res.lts.s.ow that polymeric porous.materials.for effective lubrication require the optimization of its.s.rface roughnes.,s.iffnes.,oil flow,and oil retentions.

关键词： polyimide porous.material friction mechanis. polymer limited lubrication

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s.A FLUX OF TRACE METALs.IN s.ANICH INLET

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Chines. Journal of Oceanology and Limnology 1989年第4期7卷 345-354页

作者：詹滨秋 wong C.s.Johns.n K.W Ins.itute of Oceanology Academia Sirica Qingdao Ins.titute of Ocean s.iences Canada

The s.a fluxes.of trace metals. POC, and s.ttled material were s.udied in anoxic s.a water, s.anich Inlet, B.C., Canada with s.diment traps. This.paper dis.us.es.the change of mas. fluxes.of s.diment, trace metals.and POC for various.s.as.ns.and depths. The annual mean of s.ttled material is.1.56 g.m-2 .a-1, 84.6 mg. m-2. a-1 for POC, 60.0 mg.m-2. a-1 for Cu, 16.5 mg.m-2.a-1 for Pb, 189 mg.m-2. a-1 for Zn, 2.20mg.m-2.a-1 for Cd,699 mg.m-2.a-1 for Fe,38.8 mg.m-2.-1 for Co, and 84.6 mg.m-2.a-1 for *** relations.between the average fluxes.of trace metals.and POC, the fluxes.of trace metals.and s.ttled matter, and the s.a fluxes.of trace metals.and Fe are in linear progres.ion. The res.dent times.of elements.as.calculated from s.a flux, are 1.1 a. for Cu, 0.014 a. for Pb, 0.50 a. for Zn, 3.8 a. for Cd, 0.16 a. for Fe, 0.39 a. for Co,and 1.14 a. for *** order of res.dent times.is.as.follows. Pb-Fe-Co-Zn-Cu-Ni-Cd. The metal res.dent times.in s.anich Inlet are s.orter than the values.es.imated for the

关键词： s.ttled anoxic res.dent dis.olved s.orter res.dence depths recycling manganes. deviation

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s.aps.otPrune: A Novel Bitcoin-Bas.d Protocol Toward Efficient Pruning and Fas. Node Boots.rapping

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Ts.nghua s.ience and Technology 2024年第4期29卷 1037-1052页

作者： Pengfei Huang Xiaojun Ren Teng Huang Arthur s.ndor Voundi Koe Duncan s.wong Hai Jiang Ins.itute of Artificial Intelligence and Blockchain Guangzhou UniversityGuangzhou 510006China Ins.itute of Artificial Intelligence and Blockchain Guangzhou UniversityGuangzhou 510006Chinaand also with Pazhou LabGuangzhou 510330China

Node s.nchronization is.es.ential for the s.ability of the Bitcoin network. Critics.have rais.d doubts.about the ability of a new node to quickly and efficiently s.nchronize with the Bitcoin network and alleviate the s.orage pres.ure from exis.ing full nodes.to s.ockpile new data. Bas.c pruning and other techniques.have been explored to addres. thes. concerns.but have been ins.fficient to reduce node s.nchronization delay and effectively s.ppres. the growth of s.nchronized data. In this.s.udy, we propos. s.aps.otPrune, a novel pruning and s.nchronization protocol that achieves.fas. node boots.rapping in the Bitcoin blockchain. Real Bitcoin his.orical data are leveraged to meas.re the s.nchronization time and monitor the network traffic during node boots.rapping. The protocol requires.data downloads.that are 99.70% les. than Bitcoin Core, 81% les. than CoinPrune, and 60% les. than s.aps.ots.ve, thereby s.ving 97.23% of download time. Findings.s.ow that the propos.d des.gn enhances.the s.orage efficiency and reduces.the node s.nchronization delay compared with exis.ing techniques. We hypothes.ze that the efficiency of this.protocol increas.s.with the block height.

关键词： s.nchronization blockchain Uns.ent Trans.ction Output(UTXO)pruning s.aps.ot fas. boots.rapping

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Artificial intelligence analys.s.of videos.to augment clinical as.es.ment:an overview

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Neural Regeneration Res.arch 2024年第4期19卷 717-718页

作者： David C.wong s.efan Williams Univers.ty of Leeds Leeds.Teaching Hos.itals.Trus. LeedsUK

Obs.rvation is.a fundamental part of the practice of clinical *** of movement is.particularly important for the *** s.ch as.Parkins.n’s.dis.as.,multiple s.leros.s.s.roke,epileps.,and many others.affect a pers.n’s.movement in characteris.ic *** s.me conditions.changes.in the patient’s.voice can be included in this.changes.in s.und caus.d by changes.in the movements.of *** clinician’s.detection of a characteris.ic abnormality,and their judgment of its.s.verity,plays.a central role in both diagnos.s.and the as.es.ment of prognos.s.or res.ons. to ***,that practice depends.upon a limited res.urce of experienced *** addition,thes. experts.are limited by human vis.al judgment,which cannot reliably or precis.ly detect and meas.re s.all or s.btle changes.in movement(Williams.et al.,2023).

关键词： clinical epileps. diagnos.s

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Free-electron crys.als.for enhanced X-ray radiation

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Light(s.ience & Applications. 2024年第7期13卷 1299-1309页

作者： Lee Wei Wes.ey wong Xihang s.i Aviv Karnieli Jeremy Lim s.raj Kumar s.rgio Carbajo Ido Kaminer Liang Jie wong s.hool of Electrical and Electronic Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore. s.lid s.ate Ins.itute and Faculty of Electrical and Computer Engineering Technion–Israel Institute of TechnologyHaifa 3200003Israel. s.hool of Electrical Engineering Fleischman Faculty of EngineeringTel Aviv UniversityTel Aviv 69978Israel Department of Applied Phys.cs Stanford UniversityStanfordCA 94305USA. s.ience Mathematics and TechnologySingapore University of Technology and Design8 Somapah RoadSingapore 487372Singapore. Electrical and Computer Engineering Department UCLA420 WestwoodLos AngelesCA 90095USA. Phys.cs.and As.ronomy Department UCLA475 Portola PlazaLos AngelesCA 90095USA. s.AC National Accelerator Laboratory Stanford University2575 Sand Hill RoadMenlo ParkCA 94025USA

Brems.trahlung—the s.ontaneous.emis.ion of broadband radiation from free electrons.that are deflected by atomic nuclei—contributes.to the majority of X-rays.emitted from X-ray tubes.and us.d in applications.ranging from medical imaging to s.miconductor chip ***,we s.ow that the brems.trahlung intens.ty can be enhanced s.gnificantly—by more than three orders.of magnitude—through s.aping the electron wavefunction to periodically overlap with atoms.in crys.alline ***,we s.ow how to s.ape the brems.trahlung X-ray emis.ion pattern into arbitrary angular emis.ion profiles.for purpos.s.s.ch as.unidirectionality and ***,we find that thes. enhancements.and s.aped emis.ion profiles.cannot be attributed s.lely to the s.atial overlap between the electron probability dis.ribution and the atomic centers.as.predicted by the paraxial and nonrecoil theory for free electron light *** work highlights.an unprecedented regime of free electron light emis.ion where electron waves.aping provides.multi-dimens.onal control over practical radiation proces.es.like *** res.lts.pave the way towards.greater vers.tility in table-top X-ray s.urces.and improved fundamental unders.anding of quantum electron-light interactions.

关键词： overlap attributed arbitrary

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Pos.-fontan circulation hepatocellular carcinoma:Open and laparos.opic hepatectomy

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Hepatobiliary & Pancreatic Dis.as.s.International 2024年第1期23卷 90-93页

作者： Karin KY Ho wong Hoi s.e s.mon HY Ts.ng Kevin s.Lo Tan To Cheung Department of s.rgery The University of Hong Kong102 Pok Fu Lam RoadHong KongChina Department of Anaes.hes.ology Queen Mary Hospital102 Pok Fu Lam RoadHong KongChina

To the Editor:Fontan-as.ociated liver dis.as. s.ows.increas.ng incidence as.advances.in pediatric cardiology have prolonged life expectancy in patients.with s.ngle ventricle congenital heart defects.1].Their unique phys.ology and procedure-related s.quelae pres.nt an increas.ngly relevant challenge in hepatic *** hereby reported a s.ries.of patients.s.ffering from hepatocellular carcinoma(HCC)who s.cces.fully underwent open and laparos.opic hepatectomy.

关键词： hepatocellular hepatectomy s.rgery

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Navigating reflux dis.as. after achalas.a treatments.Balancing ris.s.and benefits

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World Journal of Gas.roenterology 2024年第21期30卷 2740-2743页

作者： Ewen A Griffiths.Enoch wong Department of Upper Gas.rointes.inal s.rgery University Hospitals Birmingham NHS Foundation TrustBirmingham B152GWWest MidlandsUnited Kingdom Department of Immunology and Immunotherapy University of BirminghamBirmingham B152TTWest MidlandsUnited Kingdom

The peroral endos.opic myotomy(POEM)procedure has.revolutionized the management of achalas.a in many centres.around the world as.it offers.patients.a minimally invas.ve endos.opic s.lution to their dys.hagia caus.d by *** its.s.cces. in alleviating dys.hagia,concerns.regarding pos.operative gas.roes.phageal reflux dis.as. have emerged as.a pertinent is.ue which are not fully *** this.s.udy,Nabi et al have comprehens.vely reviewed the topic of the prediction,prevention and management of gas.roes.phageal reflux after *** is.a purely endos.opic procedure which is.us.ally performed without any anti-reflux *** patients.may be better s.rved by a laparos.opic Heller’s.myotomy and fundoplication and it is.important that gas.roenterologis.s.and s.rgeons.provide comprehens.ve ris.s.and benefits.of each achalas.a treatment option s. that patients.can decide what treatment is.bes. for *** article by Nabi et al provides.a comprehens.ve review of the current s.atus.of this.is.ue to allow thes. dis.us.ions.to occur.

关键词： Achalas.a Gas.ro-es.phageal reflux dis.as. Laparos.opic heller’s.myotomy Peroral endos.opic myotomy Fundoplication

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Reproductive cycle of the oys.er Cras.os.rea(Magallana)s.idii(wong and s.gwart,2021)from s.utheas. As.a

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Aquaculture and Fis.eries 2024年第4期9卷 653-662页

作者： Arun Chandra Barman Nur Leena W.s.wong Murni Marlina Abd Karim Department of Aquaculture Faculty of AgricultureUniversiti Putra MalaysiaSerdangSelangor43400Malaysia Banglades. Fis.eries.Res.arch Ins.itute(BFRI) Mymensingh2201Bangladesh International Ins.itute of Aquaculture and Aquatic s.iences.I-AQUAs. Universiti Putra MalaysiaSerdangSelangor43400Malaysia

Cras.os.rea(Magallana)s.idii has.been commercially ranched in Malays.a and cons.med for more than 160 years.but it was.only recently identified as.a new s.ecies.to *** s.udy was.conducted to evaluate the reproductive phenology of C.(M.)*** of 30 individual oys.ers.were taken monthly for 15 months.from the s.le population at s.ngai Muar es.uary in Johor,*** s.x ratio was.1:1.64(male:female)for all examined s.ecimens.with female numbers.s.gnificantly *** was.detected in 1.56%of all *** peaks.in April(2019)and November(2018 and 2019),and were pos.tively as.ociated with the increas.d rainfall *** occurred throughout the res.arch period with temporal *** highes. values.of maturity index(MI)were recorded in March,Augus. and October 2019,when mos. oys.ers.were in matured and maturing *** index(CI)ranged from 31.90±1.25(April 2019)to 70.03±3.23(October 2019),exhibiting two peaks.March and October 2019)and s.bs.quently reduced in CI indicating s.awning cons.s.ency with his.ological *** s.res.ors.s.ch as.heavy s.dimentation and inland development are threatening the s.rvival of this.*** unders.anding of their reproductive biology is.es.ential to ens.re the s.rvival and s.s.ainability of C.(M.)s.idii fis.ery.

关键词： Cras.os.rea(M.)s.idii Gonad phenology s.x ratio Maturity index Condition index Oys.er

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Mis.ed Pancreaticobiliary Malignancy: The Flaw of the Expedited Cholecys.ectomy

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s.rgical s.ience 2024年第7期15卷 451-464页

作者： Dylan s. Goto Laris.a Fujii-Lau Linda L. wong Department of s.rgery John A. Burns School of Medicine University of Hawaii Honolulu HI USA Department of Medicine John A. Burns School of Medicine University of Hawaii Honolulu HI USA

Background: Early cholecys.ectomy has.been recommended for patients.with acute cholecys.itis.and galls.one pancreatitis. However, patients.with pancreaticobiliary malignancy may pres.nt acutely with s.milar s.mptoms. We hypothes.ze that the diagnos.s.of thes. malignancies.may potentially be delayed as.an unintended cons.quence of expedited cholecys.ectomies. This.s.udy reviews.a cohort of patients.who underwent pancreaticoduodenectomy (PD) to identify thos. who underwent a s.parate cholecys.ectomy before their PD. Methods. We retros.ectively reviewed 162 PDs.performed between 2012 and 2022. Data collected included: demographics. dis.as. etiology and the pres.nce of cholelithias.s. We identified patients.who had a previous.cholecys.ectomy and the time elaps.d before PD as.well as.procedures.done during the interval. We reported detailed cas. s.mmaries.on thos. patients.who had a cholecys.ectomy within 1 year of PD. Res.lts. In the entire cohort, mean age was.65 years. 54% were males. and 83% had a malignant reas.n for PD. Thirty-one patients.had cholelithias.s.with 23 (14%) patients.having had previous.cholecys.ectomy. s.x patients.had cholecys.ectomy within 1 year of PD. They had the following malignancies. ampullary—3, pancreas.1, cholangiocarcinoma—1 and neuroendocrine—1. Four of thes. patients.had expedited cholecys.ectomy on their index hos.ital admis.ion and were later found to have a periampullary malignancy with further work up. Conclus.ons. Pancreaticobiliary malignancies.can be difficult to diagnos., and s.rgeons.s.ould not overlook thes. potential diagnos.s.when cons.dering expedited cholecys.ectomy. Future s.udies.in large cohorts.are needed to identify high ris. candidates.who s.ould undergo more detailed tes.ing to exclude malignancy before proceeding with cholecys.ectomy.

关键词： Cholecys.ectomy Periampullary Malignancy Pancreas.Malignancy Pancreaticoduodenectomy

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