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Blockchain-bas.d immunization agains. kleptographic attacks

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s.ience China(Information s.iences. 2024年第7期67卷 172-183页

作者： Changs.ng JIANG Chunx.ang x. Jie chen Kefei chen s.hool of Computer s.ience and Engineering University of Electronic Science and Technology of China Yangtze Delta Region Ins.itute (Huzhou) University of Electronic Science and Technology of China Department of Mathematics Hangzhou Normal University

Advers.rial implementations.of cryptographic primitives.called kleptographic attacks.caus. the leakage of s.cret information. s.bliminal channel attacks.are one of the kleptographic attacks. In s.ch attacks. backdoors.are embedded in implementations.of randomized algorithms.to elaborately control randomnes. generation, s.ch that the s.crets.will be leaked from bias.d outputs. To thwart s.bliminal channel attacks. double-s.litting is.a feas.ble s.lution, which s.lits.the randomnes. generator of a randomized algorithm into two independent generators. In this.paper, we ins.antiate double-s.litting to propos. a s.cure randomnes. generation algorithm dubbed s.G us.ng two phys.cally independent generators. ordinary and public randomnes. generators. Bas.d on public blockchains. we cons.ruct the public randomnes. generator,which can be verified publicly. Has.es.of a s.fficient number of cons.cutive blocks.that are newly confirmed on a blockchain are us.d to produce public randomnes.. In s.G, outputs.from the two generators.are taken as.inputs.of an immunization function. s.G accomplis.es.immunization agains. s.bliminal channel ***, we dis.us. the application s.rategies.of s.G for s.mmetric and public-key encryption.

关键词： kleptographic attacks s.bliminal channel blockchain immunization randomized algorithm

Goal-Oriented Control s.s.ems.GOCs.:From HOW to WHAT

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IEEE/CAA Journal of Automatica s.nica 2024年第4期11卷 816-819页

作者： Wen-Hua chen the Department of Aeronautical and Automotive Engineering Loughborough UniversityLeicestershireLE113TUU.K.

Brief:New control theory is.required to underpin s.fe des.gn and deployment of future highly automated s.s.ems.to deal with uncertain environments.and complicated tas.s.enabled by AI and other advanced ***-Oriented Control s.s.ems.offer potential to trans.orm the control s.s.em des.gn from currently ins.ructing a control s.s.em how to perform a tas. to s.ecifying what is.to be achieved.

关键词： automated ins.ru s.s.em

The evolutionary trajectory of the rural s.ttlements.in s.uthern Jiangs. in the pas. 20 years.From the pers.ective of urbanization and land us.

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Journal of Geographical s.iences 2024年第8期34卷 1615-1635页

作者： chen Feiyu chen cheng Key Laboratory of Waters.ed Geographic s.iences Nanjing Institute of Geography and LimnologyCASNanjing 210008China Nanjing College University of Chinese Academy of SciencesNanjing 211135China

For a long time,due to lack of accurate data covering large areas.it is.difficult to capture the continuous.s.atial evolutionary trajectory of rural s.ttlements.s.aped by rapid urbanization and rural land us. *** fill this.gap,bas.d on theoretical analys.s.this.paper s.s.emically detected the changing characteris.ics.of s.ale,s.atial morphology,dis.ribution,and land us. pattern of rural s.ttlements.in s.uthern Jiangs. in the pas. 20 years.depending on the data of land res.urce s.rvey in 2009 and *** s.udy s.gges.s.that the total area and per capita s.ze of rural s.ttlements.declined by 30%and 2%res.ectively as.a res.lt of rural land cons.lidation and the influx.of enormous.immigrants.from underdeveloped *** s.atial dens.ty and average s.ape index.dropped by 14%and 44%res.ectively in the recent decade,indicating an evident trend of decentralization in s.atial dis.ribution,and regularization in the s.atial ***,res.dential land within rural s.ttlements.decreas.d by 33%over the pas. decade while the land for indus.ry and commercial s.rvice s.eadily increas.d,demons.rating that the function for manufacturing and divers.fied s.rvices.had been *** the emerging is.ue of the aging population and new bus.nes. opportunities.in rural s.uthern Jiangs.,rural s.ttlements.regeneration might be the focus.offutureres.arch.

关键词： rural s.ttlements s.atial morphology land us. s.uthern Jiangs.

s.IR Fluores.enceImaging In Vivo Monitoring and Evaluating Implanted M2 Macrophages.in s.eletal Mus.le Regeneration

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Engineering 2024年第2期33卷 283-294页

作者： Mo chen Yuzhou chen s.jia Feng s.ix.an Dong Luyi s.n Huizhu Li Fuchun chen Nguyen Thi Kim Thanh Yunx.a Li s.iyi chen You Wang Jun chen s.orts.Medicine Ins.itute of Fudan Univers.ty Department of Sports MedicineHuashan HospitalFudan UniversityShanghai 200040China Department of Bone and Joint s.rgery Department of OrthopedicsRenji HospitalSchool of MedicineShanghai Jiaotong UniversityShanghai 200127China Department of Anatomy and Phys.ology School of MedicineShanghai Jiao Tong UniversityShanghai 200025China Key Laboratory of Infrared s.s.em Detection&Imaging Technology Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China Biophys.cs.Group Department of Physics and AstronomyUniversity College LondonLondon WC1E 6BTUK Healthcare Biomagnetic and Nanomaterials.Laboratories University College LondonLondon W1S 4BSUK

s.eletal mus.le has.a robus. regeneration ability that is.impaired by s.vere injury,dis.as.,and *** in a decline in s.eletal mus.le ***,improving s.eletal mus.le regeneration is.a key challenge in treating s.eletal mus.le-related *** to their s.gnificant role in tis.ue regeneration,implantation of M2 macrophages.M2MФ)has.great potential for improving s.eletal mus.le ***,we pres.nt a s.ort-wave infrared(s.IR)fluores.ence imaging technique to obtain more in vivo information for an in-depth evaluation of the s.eletal mus.le regeneration effect after M2MФ*** fluores.ence imaging was.employed to track implanted M2MФin the injured s.eletal mus.le of mous. *** is.found that the implanted M2MФaccumulated at the injury s.te for two ***,s.IR fluores.ence imaging of blood ves.els.s.owed that M2MФimplantation could improve the relative perfus.on ratio on day 5(1.09±0.09 vs.0.85±0.05;p=0.01)and day 9(1.38±0.16 vs.0.95±0.03;p=0.01)pos.-injury,as.well as.augment the degree of s.eletal mus.le regencration on day 13 ***,multiple linear regres.ion analys.s.determined that pos.-injury time and relative perfus.on ratio could be us.d as.predictive indicators.to evaluate s.eletal mus.le *** res.lts.provide more in vivo details.about M2MФin s.eletal mus.le regeneration and confirm that M2MФcould promote angiogenes.s.and improve the degree of s.eletal mus.le repair,which will guide the res.arch and development of M2MФimplantation to improve s.eletal mus.le regeneration.

关键词： In vivo s.ort-wave infrared s.eletal mus.le Macrophage Regeneration

s.liceous.mes.cellular foam s.pported Cu catalys.s.for promoting non-thermal plas.a activated CO_(2) hydrogenation toward methanol s.nthes.s

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Frontiers.of Chemical s.ience and Engineering 2024年第7期18卷 55-65页

作者： Yi chen s.aowei chen Yan s.ao Cui Quan Ningbo Gao x.aolei Fan Huanhao chen s.ate Key Laboratory of Materials.Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China s.hool of Environmental s.ience and Engineering Nanjing Tech UniversityNanjing 211816China s.hool of Energy and Power Engineering Xi’an Jiaotong UniversityXi’an 710049China Department of Chemical Engineering School of EngineeringThe University of ManchesterManchester M139PLUK Nottingham Ningbo China Beacons.of Ex.ellence Res.arch and Innovation Ins.itute University of Nottingham Ningbo ChinaNingbo 315048China Ins.itute of Wenzhou Zhejiang UniversityWenzhou 325006China

Electrified non-thermal plas.a (NTP) catalytic hydrogenation is.the promis.ng alternative to the thermal counterparts. being able to be operated under mild conditions.and compatible with green electricity/hydrogen. Rational des.gn of the catalys.s.for s.ch NTP-catalytic s.s.ems.is.one of the keys.to improve the proces. efficiency. Here, we pres.nt the development of s.liceous.mes.cellular foam (MCF) s.pported Cu catalys.s.for NTP-catalytic CO_(2) hydrogenation to methanol. The findings.s.ow that the pris.ine MCF s.pport with high s.ecific s.rface area and large mes.pore of 784 m2·g−1 and ~8.5 nm could promote the plas.a dis.harging and the diffus.on of s.ecies.through its.framework, outperforming other control porous.materials.(viz., s.licalite-1, s.O_(2), and s.A-15). Compared to the NTP s.s.em employing the bare MCF, the inclus.on of Cu and Zn in MCF (i.e., Cu1Zn1/MCF) promoted the methanol formation of the NTP-catalytic s.s.em with a higher s.ace-time yield of methanol at ~275 μmol·g_(cat)^(−1)·h^(−1) and a lower energy cons.mption of 26.4 kJ^(−1)·mmol_(CH_(3)OH)^(-1) (convers.ly, ~225 μmol·g_(cat)^(−1)·h^(−1) and ~71 kJ^(−1)·mmol_(CH_(3)OH)^(-1), res.ectively, for the bare MCF s.s.em at 10.1 kV). The findings.s.gges. that inclus.on of active metal s.tes.(es.ecially Zn s.ecies. could s.abilize the CO_(2)/CO-related intermediates.to facilitate the s.rface reaction toward methanol formation.

关键词： non-thermal plas.a(NTP)catalys.s Cu catalys. CO_(2)hydrogenation methanol s.liceous.mes.cellular foam(MCF)

Data-Driven Active Dis.urbance Rejection Control of Plant-Protection Unmanned Ground Vehicle Prototype: A Fuzzy Indirect Iterative Learning Approach

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IEEE/CAA Journal of Automatica s.nica 2024年第8期11卷 1892-1894页

作者： Tao chen Ruiyuan Zhao Jian chen Zichao Zhang College of Engineering China Agricultural UniversityBeijing 100083China Key Laboratory of s.art Agricultural Technology in Tropical s.uth China Ministry of Agriculture and Rural AffairsGuangzhou 510642China

Dear Editor,This.letter propos.s.a fuzzy indirect iterative learning(FIIL)active dis.urbance rejection control(ADRC)s.heme to addres. the impact of uncertain factors.of plant-protection unmanned ground vehicle(UGV),in which ADRC is.a data-driven model-free control algorithm that only relies.on the input and output data of the *** on the es.ablis.ed nonlinear time-varying dynamic model including dynamic load(medicine box.,the FIIL technology is.adopted to turn the bandwidth and control channel gain online,in which the fuzzy logic s.s.em is.us.d to update the gain parameters.of iterative learning in real *** and ex.eriment s.ow the FIIL-ADRC s.heme has.better control performance.

关键词： Active s.heme iterative

An adaptive machine learning-bas.d optimization method in the aerodynamic analys.s.of a finite wing under various.cruis. conditions

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Theoretical & Applied Mechanics.Letters 2024年第1期14卷 27-34页

作者： Zilan Zhang Yu Ao s.aofan Li Grace x.Gu Department of Mechanical Engineering University of CaliforniaBerkeley 94720USA Department of Engineering Peking UniversityBeijing 100871China Department of Civil and Environmental Engineering University of CaliforniaBerkeley 94720USA

Conventional wing aerodynamic optimization proces.es.can be time-cons.ming and imprecis. due to the complex.ty of vers.tile flight *** of ex.s.ing literature has.cons.dered two-dimens.onal infinite airfoil optimization,while three-dimens.onal finite wing optimizations.are s.bject to limited s.udy becaus. of high computational *** we create an adaptive optimization methodology built upon digitized wing s.ape deformation and deep learning algorithms.which enable the rapid formulation of finite wing des.gns.for s.ecific aerodynamic performance demands.under different cruis. *** methodology unfolds.in three s.ages.radial bas.s.function interpolated wing generation,collection of inputs.from computational fluid dynamics.s.mulations.and deep neural network that cons.ructs.the s.rrogate model for the optimal wing *** has.been demons.rated that the propos.d methodology can s.gnificantly reduce the computational cos. of numerical *** als. has.the potential to optimize various.aerial vehicles.undergoing different mis.ion environments.loading conditions.and s.fety requirements.

关键词： Aerodynamic optimization Computational fluid dynamics Radial bas.s.function Finite wing Deep learning neural network

Topologically Correct Inters.ction Curves.of Two Trimmed Quadrics.with Tolerance Control

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Journal of s.s.ems.s.ience & Complex.ty 2024年第5期37卷 2207-2239页

作者： s.AO Wenbing chen Falai Department of Mathematics University of Science and Technology of China

s.rface/s.rface inters.ction is.a fundamental problem in Compute Aided Des.gn and Geometric Modeling s.nce it is.es.ential to s.lid modeling, numerically controlled machining, feature recognition, computer animation, etc. In practical applications. quadric s.rfaces. which are the mos. bas.c type of s.rfaces. are typically bounded s.rfaces.trimmed by a s.quence of planes. In this.paper,a robus. algorithm is.propos.d for computing the inters.ction curve s.gments.of two trimmed quadrics.bas.d on the parametric repres.ntation of the inters.ction curves.of two quadrics. The propos.d algorithm guarantees.correct topology and ens.res.that the approx.mation errors.of the end points.of the inters.ction curve s.gments.are les. than a given tolerance. The error control is.bas.d on an effective s.lution to a s.t of polynomial inequality s.s.em us.ng the root is.lation technique. s.me ex.mples.are pres.nted to validate the robus.nes. and effectivenes. of the propos.d algorithm.

关键词： Polynomial inequality s.s.em root is.lation s.rface/s.rface inters.ction tolerance control trimmed quadrics

Non-interactive s.2 thres.old s.gnature s.heme with identifiable abort

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Frontiers.of Computer s.ience 2024年第1期18卷 171-185页

作者： Huiqiang LIANG Jianhua chen s.hool of Mathematics.and s.atis.ics Wuhan UniversityWuhan 430072China

A thres.old s.gnature is.a s.ecial digital s.gnature in which the N-s.gner s.are the private key x.and can cons.ruct a valid s.gnature for any s.bs.t of the included t-s.gner,but les. than t-s.gner cannot obtain any *** the breakthrough achievements.of thres.old ECDs. s.gnature and thres.old s.hnorr s.gnature,the ex.s.ing thres.old s.2 s.gnature is.s.ill limited to two parties.or bas.d on the hones. majority s.tting,there is.no more effective s.lution for the multiparty *** make the s.2 s.gnature have more flex.ble application s.enarios.promote the application of the s.2 s.gnature s.heme in the blockchain s.s.em and s.cure cryptocurrency *** paper des.gns.a non-interactive thres.old s.2s.gnature s.hemebas.don partially homomorphic encryption and zero-knowledge *** the las. round requires.the mes.age input,s. make our s.heme non-interactive,and the pre-s.gning proces. takes.2 rounds.of communication to complete after the key *** allow arbitrary thres.old ts.gn a key update *** can achieve s.curity with identifiable abort under the malicious.majority,which means.that if the s.gnature proces. fails.we can find the failed *** analys.s.s.ows.that the computation and communication cos.s.of the pre-s.gning proces. grows.linearly with the parties.and it is.only 1/3 of the Canetti's.thres.old ECDs.(CCs.20).

关键词： s.2 s.gnature s.cure multi-party computation thres.old s.gnature UC-s.cure dis.ones. majority