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Constructions of vectorial Boolean functions with good cryptographic properties

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Science China(Information Sciences) 2016年第11期59卷 233-234页

作者： luyang li Weiguo ZHANG State Key Laboratory of Integrated Services Networks Xidian University Science and Technology on Communication Security Laboratory

Dear editor,Vectorial Boolean functions play an important role in designing certain stream cipher schemes,such as filtering generators and nonlinear *** be used in the aforementioned schemes,vectorial Boolean functions must satisfy several *** best affine and linear approximation attacks show that high nonlinearity is significant for designing cryptographically strong ***-immune functions were first introduced by Siegenthaler[1]in order to construct

关键词： In Constructions of vectorial Boolean functions with good cryptographic properties

Truth Discovery with Memory Network

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Tsinghua Science and Technology 2017年第6期22卷 609-618页

作者： luyang li Bing Qin Wenjing Ren Ting liu Research Center for Social Computing and Information Retrieval Harbin Institute of Technology Harbin 150001 China

Truth discovery aims to resolve conflicts among multiple sources and find the truth. Conventional methods for truth discovery mainly investigate the mutual effect between the reliability of sources and the credibility of statements. These methods use real numbers, which have a lower representation capability than vectors to represent the reliability. In addition, neural networks have not been used for truth discovery. In this work, we propose memory-network-based models to address truth discovery. Our proposed models use feedforward and feedback memory networks to learn the representation of the credibility of statements. Specifically, our models adopt a memory mechanism to learn the reliability of sources for truth prediction. The proposed models use categorical and continuous data during model learning by automatically assigning different weights to the loss function on the basis of their own effects. Experimental results show that our proposed models outperform state-of-the-art methods for truth discovery.

关键词： truth discovery memory networks source reliability

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Construction of balanced Boolean functions with high nonlinearity, good local and global avalanche characteristics

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Frontiers of Mathematics in China 2016年第2期11卷 339-352页

作者： luyang li Yujuan SUN Weiguo ZHANG ISN Laboratory Xidian University Xi'an 710071 China Science and Technology on Communication Security Laboratory Chengdu 610041 China

Boolean functions possessing multiple cryptographic criteria play an important role in the design of symmetric cryptosystems. The following criteria for cryptographic Boolean functions are often considered： high nonlinearity, balancedness, strict avalanche criterion, and global avalanche characteristics. The trade-off among these criteria is a difficult problem and has attracted many researchers. In this paper, two construction methods are provided to obtain balanced Boolean functions with high nonlinearity. Besides, the constructed functions satisfy strict avalanche criterion and have good global avalanche characteristics property. The algebraic immunity of the constructed functions is also considered.

关键词： Boolean function cryptography nonlinearity strict avalanchecriterion (SAC) global avalanche characteristics

light mesons and phase structures inμB-T-eB andμI-T-eB spaces

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Chinese Physics C 2022年第9期46卷 237-248页

作者： luyang li Shijun Mao Xi’an University of Posts and Telecommunications Xi’an 710121China Institute of Theoretical Physics School of PhysicsXi’an Jiaotong UniversityXi’an 710049China

light mesons(σ,π^(0),π^(±))are investigated inμB-T-eB andμI-T-eB spaces using a two-flavor NJL model and used to determine chiral symmetry restoration and the pion superfluid phase ***μB-T-eB space,during the chiral symmetry restoration process,the mass of the pseudo-Goldstone modeπ^(0)increases,with sudden *** the critical end point,theπ^(0)meson exhibits a sharp but continuous mass increase,with a sudden mass jump at the Mott *** the nearby first order chiral phase transition region,we observe twoπ^(0)mass jumps,one induced by the Mott transition and the other by the quark mass *** mass of the Higgs modeσfirst decreases and then increases with chiral symmetry restoration,only showing a jump at the first order chiral phase *** plot a chiral phase diagram in terms of the change in quark mass,the Mott transition of the pseudo-Goldstone modeπ^(0),and the minimum mass of the Higgs modeσ.Owing to explicit breaking of chiral symmetry in the physical case,the chiral restoration phase boundaries on theμB-T plane from the order parameter side and meson side are ***π^(0)andσmass jumps will be helpful to the experimental search for the chiral phase diagram and critical end *** theμI-T plane,the competition between the pion superfluid phase transition and chiral symmetry restoration under magnetic fields is studied in terms of the Goldstone modeπ^(+)and pseudo-Goldstone modeπ^(0).In contrast to the two mass jumps ofπ^(0)in the first order chiral phase transition region,theπ^(+)meson displays several mass jumps in the chiral crossover *** the critical end point,π^(+)also has sharp but continuous mass change,with a mass jump at the Mott *** isospin symmetry is strict,and the pion superfluid phase transition is uniquely determined by the massless Goldstone modeπ^(+).The separation of chiral restoration and the pion superfluid phase boundaries is enhanced by the external magnetic field.

关键词： mesons chiral symmetry pion superfluid magnetic field

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Rationally Leveraging Polymer Chain-Length Heterogeneity for Robust Structural Engineering

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CCS Chemistry 2024年第8期6卷 1965-1977页

作者： Zhanhui Gan luyang li Dongdong Zhou Zhuoqi Xu Zhuang Ma Jiawen He Weihua li Xue-Hui Dong South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft MatterSouth China University of TechnologyGuangzhou 510640 State Key Laboratory of Molecular Engineering of Polymers Key Laboratory of Computational Physical SciencesDepartment of Macromolecular ScienceFudan UniversityShanghai 200433 College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065 Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou 510640

The inherent uncertainty of chain length in synthetic polymers casts doubt on the explicit understanding of fundamental *** study quantitatively assesses the critical role of chain-length distribution in the self-assembly process,aiming to identify the point at which discernible discrepancies begin to *** blending discrete diblock copolymers of varying sizes,chain-length nonuniformity can be precisely regulated while the average composition remains *** a minor heterogeneity leads to an expansion of lattice dimension,while a phase transition occurs as the difference exceeds a ***,a transition from the Frank–Kasperσphase to the body-centered cubic phase was triggered by enlarging the size difference of the corona block,while introducing heterogeneity in the core block stabilized the hexagonally close-packed spheres.A self-consistent field theory calculation reveals that the synergy between the long and short chains effectively releases packing frustration,leading to substantial changes in the free-energy landscape and stabilizing unconventional phases otherwise *** work calls particular attention to the importance of chain-length heterogeneity and provides a robust approach to finely tuning the phase behavior and physical properties of block copolymers without altering their chemical composition.

关键词： discrete polymer molecular weight distribution self-assembly hexagonally close-packed phase Frank-Kasper phases

A BON REliGION VILLAGE(Ⅱ)

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China's Tibet 2003年第1期14卷 22-25页

作者： li luyang

The world used to be composed of five particles known today as a kind of oval. They evolved into dew and raindrops, which accumulated and eventually formed the *** of the oval-related bubbles exploded and out jumped a... 详细信息

关键词：西藏民俗文化韦布村方言建筑文化

Medicinal Standard of Rhinoceros Horn and Its Authenticity Identification

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Medicinal Plant 2023年第2期14卷 23-26页

作者： Xinyan HU luyang li Beijing Hospital of Traditional Chinese Medicine Capital Medical UniversityBeijing 100010China

Amid the background where the rhinoceros horn has been hoarded as a rare commodity,there is never a lack of counterfeits and adulterated products of rhinoceros horns on the *** article aims to summarize the commodity specifications and identification key points of the rhinoceros horn from its medicinal standard,to provide a reference for studying substitutes of rhinoceros horn.

关键词： Rhinoceros horn Medicinal standard of rhinoceros horn

Constructions of correlation immnue S-boxes with high nonlinearity

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Journal of Information and Intelligence 2024年第3期2卷 253-260页

作者： Yanhan Ji Zhuo Ma luyang li Yujuan Sun State Key Laboratory of Integrated Services Networks Xidian UniversityXian 710071China NationalEngineering Laboratoryfor Wireless Security Xian Universty of Posts and TelecommunicationsXi'an 70121China

S-boxes play a central role in the design of symmetric cipher *** stream cipher appli-cations,an s-box should satisfy several criteria such as high nonlinearity,balanceness,correlation immunity,and so *** this paper,by using disjoint linear codes,a class of s-boxes possessing high nonlinearity and 1st-order correlation immunity is *** is shown that the constructed correlation immune S-boxes can possess currently best known nonlinearity,which is confirmed by the example 1st-order correlation immune(12,3)s-box with nonlinearity *** addition,two other frameworks concerning the criteria of balanced and resiliency are obtained respectively.

关键词： Boolean function S-boxes Nonlinearity Correlation immunity Balanceness

PromptWE:一种融合解释的提示学习事实核查模型

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清华大学学报（自然科学版） 2024年第5期64卷 760-769页

作者：张翔然李璐旸浙江大学工程师学院杭州310015 北京外国语大学信息科学技术学院北京100089

针对事实核查任务中如何利用生成的解释更好地辅助真实性判断的问题,该文提出一种融合解释的提示学习事实核查模型PromptWE。该模型在生成任务中通过证据筛选和摘要生成更易理解的解释,然后在分类任务中将解释融合进提示学习模型的提示... 详细信息

针对事实核查任务中如何利用生成的解释更好地辅助真实性判断的问题,该文提出一种融合解释的提示学习事实核查模型PromptWE。该模型在生成任务中通过证据筛选和摘要生成更易理解的解释,然后在分类任务中将解释融合进提示学习模型的提示模板中,从而将解释与预训练模型储备的知识相结合,以提高真实性判别的准确率。该模型在2个数据集上的F1值比SOTA模型高5%,表明模型生成的解释能提升模型判别信息真假的能力。此外,为了说明高质量的解释在分类任务中的重要性,该文将数据集中的专家证据直接作为解释,融合进提示模板中进行了提示学习训练,比融合模型生成的解释的F1值提高了16%,证明了高质量解释能有效激发通用语言模型在事实核查任务上的能力。

关键词：事实核查提示学习解释生成

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