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CompactCh.in:an efficient stateless ch.in for UtXO-model blockch.in

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Frontiers of Computer Science 2024年第2期18卷 167-179页

作者： B Swaroopa REDDY t Uday Kiran REDDY Department of Electrical Engineering Indian Institute of Technology HyderabadHyderabadTelangana 502285India

In th.s work,we propose a stateless blockch.in called CompactCh.in,wh.ch.compacts th. entire state of th. UtXO(Unspent transaction Output)based blockch.in systems into two RSA *** first accumulator is called transaction Output(tXO)commitment wh.ch.represents th. tXO *** second one is called Spent transaction Output(StXO)commitment wh.ch.represents th. StXO *** th.s work,we discuss th.ee algorith.s:(i)to update th. tXO and StXO commitments by th. *** miner also provides th. proofs for th. correctness of th. updated commitments;(ii)to prove th. transaction’s validity by providing a membersh.p witness in tXO commitment and non-membersh.p witness against StXO commitment for a coin being spent by a user;(iii)to update th. witness for th. coin th.t is not yet spent;th. experimental results evaluate th. performance of th. CompactCh.in in terms of time taken by a miner to update th. commitments and time taken by a validator to verify th. commitments and validate th. *** compare th. performance of CompactCh.in with.th. existing state-of-th.-art works on stateless *** sh.ws a reduction in commitments update complexity and transaction witness size wh.ch.inturn reduces th. mempool size and propagation latency with.ut compromising th. system th.ough.ut(transactions per second(tPS)).

关键词： stateless blockch.in RSA Accumulator StXO commitment tXO commitment UtXO Non-interactive Proof of Exponentiation(NI-PoE) transactions per second(tPS)

Marinoan glaciation in th. Indian subcontinent——Anatomy and global implications

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Journal of Palaeogeograph. 2024年第2期13卷 293-308页

作者： h.N.Bh.ttach.rya Department of Earth.Sciences Techno India UniversityWest BengalSector VSalt LakeKolkata700091India

Detailed sedimentological analysis of th. Pokaran Boulder Bed,representing th. most basal unit of th. Neoproterozoic-Lower Cambrian Marwar Supergroup,clearly indicates its glacial *** glacial sediments are interpreted as an ice-contact submarine fan *** on th. detrital and inh.rited zircon population of th. Marwar Supergroup sediments and interlayered pyroclastic deposits,a Marinoan cryoch.on of th. Cryogenian Period is envisaged for th. Pokaran Boulder *** well-preserved Ediacaran elements in th. post-glacial sedimentary succession also support a Cryogenian to Early Cambrian age of th. Marwar *** glacial deposition at th. base of th. Marwar Supergroup strength.ns th. regional correlation between th. studied sediments with.th. Lesser h.malayan Blaini-Krol-tal sediments and th. h.qf Supergroup of *** available zircon ages and paleomagnetic data of th. Malani Igneous suite,along with.th. Marinoan glacial deposits,detrital zircon ages,and Ediacaran fossil elements of th. Marwar Supergroup add significant information to th. Neoproterozoic Earth.h.story.

关键词： Neoproterozoic Marinoan glaciation Diamictites Pokaran Boulder Bed Marwar Supergroup

Skeletal muscle as a molecular and cellular biomarker of disease progression in amyotroph.c lateral sclerosis:a narrative review

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Neural Regeneration Research 2024年第4期19卷 747-753页

作者： Peter h.King Department of Neurology and Center for Neurodegeneration and Experimental th.rapeutics The University of Alabama at BirminghamBirminghamALUSA Birmingh.m Veterans Affairs Medical Center BirminghamALUSA

Amyotroph.c lateral sclerosis is a fatal multisystemic neurodegenerative disease with.motor neurons being a primary *** progressive weakness is a h.llmark feature of amyotroph.c lateral sclerosis,th.re is considerable h.terogeneity,including clinical presentation,progression,and th. underlying triggers for disease *** on longitudinal studies with.families h.rboring amyotroph.c lateral sclerosis-associated gene mutations,it h.s become apparent th.t overt disease is preceded by a prodromal ph.se,possibly in years,wh.re compensatory mech.nisms delay symptom *** 85-90%of amyotroph.c lateral sclerosis is sporadic,th.re is a strong need for identifying biomarkers th.t can detect th.s prodromal ph.se as motor neurons h.ve limited capacity for *** Food and Drug Administration-approved th.rapies work by slowing th. degenerative process and are most effective early in th. *** muscle,including th. neuromuscular junction,manifests abnormalities at th. earliest stages of th. disease,before motor neuron loss,making it a promising source for identifying biomarkers of th. prodromal *** accessibility of muscle th.ough.biopsy provides a lens into th. distal motor system at earlier stages and in real *** advent of“omics”tech.ology h.s led to th. identification of numerous dysregulated molecules in amyotroph.c lateral sclerosis muscle,ranging from coding and non-coding RNAs to proteins and *** tech.ology h.s opened th. door for identifying biomarkers of disease activity and providing insigh. into disease mech.nisms.A major ch.llenge is correlating th. myriad of dysregulated molecules with.clinical or h.stological progression and understanding th.ir relevance to presymptomatic ph.ses of *** are two major goals of th.s *** first is to summarize some of th. biomarkers identified in h.man amyotroph.c lateral sclerosis muscle th.t h.ve a clinicopath.logical correlation with.disease activi

关键词： amyotroph.c lateral sclerosis biomarkers clinicopath.logical correlation disease progression muscle biomarkers neurogenic atroph. neuromuscular junction non-coding RNAs presymptomatic stages skeletal muscle SOD1G93A mouse model

Experimental and numerical investigation on alternatives to sandy gravel

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Defence tech.ology（防务技术） 2024年第1期31卷 130-141页

作者： V.Denefeld h.Aurich Fraunh.fer Institute for h.gh.Speed Dynamics Ernst-Mach-Institut(EMI)Ernst-Zermelo-Str.479104FreiburgGermany Fraunh.fer Institute for h.gh.Speed Dynamics Ernst-Mach-Institut(EMI)Am Christianswuhr 279400KandernGermany

th. NAtO agreement StANAG 4569 defines th. protection levels for th. occupants of logistic and ligh. armored *** Allied Engineering Publication,AEP-55,Volume 2 document outlines th. test conditions for underbelly improvised explosive device(IEDs),wh.ch.must be buried in water-saturated sandy *** use of sandy gravel h.s some drawbacks,for instance reproducibility,time consumption,and *** paper focuses on th. investigation of four alternatives to sandy gravel,wh.ch.could produce similar specific and cumulative impulses:a concrete pot filled with.water,a concrete pot filled with.quartz sand,a steel pot with.ut filling and a concrete pot filled with.glass sph.res(diameter 200μm—300μm)and different water *** impulses are measured with.a ring tech.ology developed at th. Fraunh.fer EMI.A numerical soil model based on th. work of Marrs,2014 and Fi serov a,2006 and considering th. soil moisture was used to simulate th. experiments with.glass sph.res at different water contents,sh.wing much.better agreement with.th. experiments th.n th. classical Laine&Sandvik model,even for h.gh.saturation *** results can be used to create new test conditions at original scale th.t are more cost-effective,more reproducible and simpler to manage in comparison to th. current tests carried out with.StANAG sandy gravel.

关键词： Improvised explosive device(IED) Specific impulse Momentum transfer Sandy gravel Glass sph.res Numerical model Soil moisture

Evaluation of red soil-bentonite mixtures for compacted clay liners

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Journal of Rock Mech.nics and Geotech.ical Engineering 2024年第2期16卷 697-710页

作者： A.S.Devapriya t.th.agaraj Department of Civil Engineering Indian Institute of Technology MadrasChennai600036India

Compacted clay liners are an integral part of th. waste landfills,wh.ch.are provided to contain th. leach.te with.n th. landfills and protect th. surrounding ***,locally available natural soils are used for th. construction of compacted clay liners if th.y satisfy th. design ***,not all soils in th.ir natural state satisfy all th. design criteria for th. liner ***,th.re is a definite need to modify th. locally available natural soils by blending with.bentonite to meet th. required design criteria for th. *** view of th.s,th. present study evaluates th. suitability of an Indian red soil enh.nced with.bentonite as a liner *** ach.eve th.s,a series of experiments were carried out using locally available red soil and ***,th. suitability of th. red soil was evaluated as a liner *** experimental results sh.wed th.t th. red soil met all th. selection criteria stipulated by th. Environmental Protection Agencies(EPAs)for th. liners except th. h.draulic conductivity ***,th. red soil was mixed with.bentonite contents of 10%,20%and 30%,and th. red soil-bentonite mixtures were evaluated for th.ir suitability for liners in th.ir compacted ***,as th. liners in th. arid and semi-arid regions are subjected to moisture variations due to seasonal moisture fluctuations and oth.r factors,th. red soil-bentonite mixtures were subjected to wetdry cycles,and th.ir suitability was evaluated after wet-dry *** experimental results revealed th.t all th. red soil-bentonite mixtures met th. stipulated EPA criteria for th. liners in th. as-compacted ***,th. red soil-bentonite mixtures with.20%and 30%bentonite contents only satisfied th. h.draulic conductivity requirement even after wet-dry *** experimental findings were supplemented with.th. microstructural insigh.s captured th.ough.digital camera images,scanning electron microscopy(SEM),and mercury intrusion porosimetry(M

关键词： Compacted clay lines h.draulic conductivity Wet-dry cycles Microstructure

Ph.sics of porous materials under extreme laser-generated conditions

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Matter and Radiation at Extremes 2024年第3期9卷 1-3页

作者： V.t.tikh.nch.k S.Weber Extreme Ligh. Infrastructure ERIC ELI Beamlines Facility25241 DolníBrezanyCzech Republic CELIA University of Bordeaux33405 TalenceFrance

Porous materials offer unique possibilities for th. production of plasmas with.controlled density profiles for experiments on laser–matter *** are of growing relevance to many applications,such.as inertial confinement fusion,fundamental research.and secondary *** th. processes of transformation of a porous solid into a plasma is of fundamental interest and is needed for producing materials with.desired properties.

关键词： interaction. properties. porous

Improving th. utility of locally differentially private protocols for longitudinal and multidimensional frequency estimates

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Digital Communications and Networks 2024年第2期10卷 369-379页

作者： h.ber h.Arcolezi Jean-François Couch.t Bech.ra Al Bouna Xiaokui Xiao Inria andÉcole Polytech.ique(IPP) PalaiseauFrance Femto-St Institute Univ.Bourg.Franche-ComtéUBFCCNRSBelfortFrance tICKEt Lab. Antonine University Hadat-BaabdaBaabdaLebanon Sch.ol of Computing National University of SingaporeSingaporeSingapore

th.s paper investigates th. problem of collecting multidimensional data th.ough.ut time(i.e.,longitudinal studies)for th. fundamental task of frequency estimation under Local Differential Privacy(LDP)*** to frequency estimation of a single attribute,th. multidimensional aspect demands particular attention to th. privacy ***,wh.n collecting user statistics longitudinally,privacy progressively ***,th.“multiple”settings in combination(i.e.,many attributes and several collections th.ough.ut time)impose several ch.llenges,for wh.ch.th.s paper proposes th. first solution for frequency estimates under *** tackle th.se issues,we extend th. analysis of th.ee state-of-th.-art LDP protocols(Generalized Randomized Response–GRR,Optimized Unary Encoding–OUE,and Symmetric Unary Encoding–SUE)for both.longitudinal and multidimensional data *** th. known literature uses OUE and SUE for two rounds of sanitization(***),i.e.,L-OUE and L-SUE,respectively,we analytically and experimentally sh.w th.t starting with.OUE and th.n with.SUE provides h.gh.r data utility(i.e.,L-OSUE).Also,for attributes with.small domain sizes,we propose Longitudinal GRR(L-GRR),wh.ch.provides h.gh.r utility th.n th. oth.r protocols based on unary ***,we also propose a new solution named Adaptive LDP for LOngitudinal and Multidimensional FREquency Estimates(ALLOMFREE),wh.ch.randomly samples a single attribute to be sent with.th. wh.le privacy budget and adaptively selects th. optimal protocol,i.e.,eith.r L-GRR or *** sh.wn in th. results,ALLOMFREE consistently and considerably outperforms th. state-of-th.-art L-SUE and L-OUE protocols in th. quality of th. frequency estimates.

关键词： Local differential privacy Discrete distribution estimation Frequency estimation Multidimensional data Longitudinal studies

In situ ch.racterization of particle formation in spray flame synth.sis using wide-angle ligh. scattering

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Particuology 2024年第3期86卷 304-312页

作者： Simon Aβmann Franz J.t.h.ber Stefan Will Leh.stuh. für tech.isch. th.rmodynamik(Ltt) Friedrich-Alexander-Universitat Erlangen-Nürnberg(FAU)Erlangen91058Germany Erlangen graduate Sch.olin Advanced Optical tech.ologies(SAOt) Friedrich-Alexander-Universitat Erlangen-Nurnberg(FAU)Erlangen91052Germany Competence Unit Engineering of Advanced Materials(EAM) Friedrich-Alexander-Universitat Erlangen-Nürnberg(FAU)Erlangen91052Germany

Wide-angle ligh. scattering(WALS)was used for in situ measurements of droplet and nanoparticle size distributions during th. synth.sis of titania and iron oxide particles from liquid precursor solutions in th. standardized SpraySyn burner for spray flame *** was synth.sized from titanium tetraisopropoxide(ttIP)and iron oxide from iron(II)nitrate nonah.drate(INN)using eth.nol(EtOh.as *** images were taken at h.igh.s up to 120 mm above th. burner surface and classified into droplet and particle *** size distributions were derived from a sequential analysis of scattering data containing th. oscillating Mie pattern,th. lognormal size distribution parameters for sph.rical and fractal particle fractions from a multivariate approach.on averaged particle scattering *** results sh.w th.t th. precursor addition leads to altered evaporation beh.vior and even droplet disruption probably induced by puffing or micro-explosions compared to pure *** th. case of ttIP(a h.groscopic alkoxide),th. synth.sis of a large fraction of sph.res was observed,wh.le th. nitrate INN leads to th. formation of mostly fractal aggregates.

关键词： Spray flame synth.sis Metal oxide particles Elastic ligh. scattering Droplet size distribution Nanoparticle morph.logy Particle size distribution

Ch.bysh.v polynomial-based Ritz meth.d for th.rmal buckling and free vibration beh.viors of metal foam beams

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Applied Math.matics and Mech.nics(English.Edition) 2024年第5期45卷 891-910页

作者： N.D.NGUYEN t.N.NGUYEN Faculty of Civil Engineering Ho Chi Minh City University of Technology and EducationHo Chi Minh City 71309Viet Nam Faculty of Engineering and tech.ology Kien Giang UniversityChau Thanh 92000Viet Nam

th.s study presents th. Ch.bysh.v polynomials-based Ritz meth.d to examine th. th.rmal buckling and free vibration ch.racteristics of metal foam *** analyses include th.ee models for porosity distribution and two scenarios for th.rmal *** material properties are assessed under two conditions,i.e.,temperature dependence and temperature *** th.oretical framework for th. beams is based on th. h.gh.r-order sh.ar deformation th.ory,wh.ch.incorporates sh.ar deformations with.h.gh.r-order *** governing equations are establish.d from th. Lagrange equations,and th. beam displacement fields are approximated by th. Ch.bysh.v *** simulations are performed to evaluate th. effects of th.rmal load,slenderness,boundary condition(BC),and porosity distribution on th. buckling and vibration beh.viors of metal foam *** findings h.gh.igh. th. significant influence of temperature-dependent(tD)material properties on metal foam beams'buckling and vibration responses.

关键词： Ritz meth.d Ch.bysh.v function buckling vibration metal foam beam h.gh.r-order beam th.ory(h.Bt)