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More permutation polynomials with differential uniformity six

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Science China(Information Sciences) 2018年第3期61卷 223-225页

作者： Ziran tu Xiangyong ZENG Zhiyong ZHANG School of Mathematics and Statistics Henan University of Science and Technology Faculty of Mathematics and Statistics Hubei Key Laboratory of Applied Mathematics Hubei University School of Information Engineering Henan University of Science and Technology

Differential analysis is one of the most important attacks threatening iterated block *** resist against differential attacks[1],the multioutput Boolean functions used in designing Sboxes should have low differential *** a positive integer n,the lowest differential uniformity of the functions from the finite field F;(for a prime power q,F;denotes the finite field with

关键词： More permutation polynomials with differential uniformity six

Species distribution of polymeric aluminium ferrum——timed complexation colorimetric analysis method of Al-Fe-Ferron

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Journal of Environmental Sciences 2001年第4期13卷 418-421页

作者： Hu, YY tu, CQ Wu, HH S China Univ Technol Coll Paper & Environm Engn Guangzhou 510640 Peoples R China

The effects of the calorimetric buffer solutions were investigated while the two colorimetric reactions of AI-ferron complex and Fe-ferron complex occurred individually, and the effects of the testing wavelength and the pH of the solutions were also investigated. A timed complexatian colorimetric analysis method of Al-Fe-ferron in view of the total concentration of {AI + Fe} was then established to determine the species distribution of polymeric Al-Fe. The testing wavelength was recommended at 362 net and the testing pH value was 5. With a comparison of the ratios of n(Al)/n(Fe), the standard adsorption curves of the polymeric Al-Fe solutions were derived from the experimental results. Furthermore, the solutions' composition were carious in both the molar n(Al)/n(Fe) ratios, i.e. 0/0, 5/5, 9/1 and 0/10, and the concentrations associated with the total ( Al + Fe which ranged from 10(-5) to 10(-4) mol/L..

关键词： polymeric aluminum-ferrum species distribution timed complexation colarimetric analysis method Al-Fe-ferron

An integrated MINLP model for multi-party coordination in downstream oil supply chain

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Petroleum Science 2024年第3期21卷 2066-2079页

作者： Rui Qiu Bo Zhang Wei Zhao Ren-Fu tu Man-Qiu He Qi Liao Yong-tu Liang National Engineering Laboratory for Pipeline Safety/Beijing Key Laboratory of Urban Oil and Gas Distribution Technology China University of Petroleum-BeijingFuxue Road No.18Changping DistrictBeijing102249PR China Strategy&Implementation Department PipeChinaDongtucheng Road No.5Chaoyang DistrictBeijing100013PR China

Cooperation among enterprises can bring overall and individual performance improvement,and a smooth coordination method is ***,due to the lack of customized coordination methods,cooperation in the downstream oil supply chain cannot be carried out *** paper intends to propose a multi-party coordination method to promote cooperation between oil shippers and pipeline operator by optimizing oil transportation,oil substitution and pipeline pricing *** integrated game-theoretic modeling and analysis approach is developed to characterize the operation behaviors of all stakeholders in the downstream oil supply *** proposed mixed integer nonlinear programming model constrains supply and demand capacity,transportation routes,oil substitution rules and pipeline freight *** transformation and price discretization are introduced for model linear *** experiments are carried out in the oil distribution system in South *** results show that compared to the business-as-usual scheme,the new scheme saves transportation cost by 3.48%,increases pipeline turnover by 5.7%,and reduces energy consumption and emissions by 7.66%and 6.77%.It is proved that the proposed method improves the revenue of the whole system,achieves fair revenue distribution,and also improves the energy and environmental benefits of the oil supply chain.

关键词： Downstreamoil supplychain Multi-partycoordination Cooperative game Mixed integernonlinear programming model Pipeline transportation Revenue distribution

Equivalence between the internal observability and equation

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Applied Mathematics(A Journal of Chinese Universities) 2024年第1期39卷 89-97页

作者： LIU Wen-jun tu Zhi-yu School of Mathematics and Statistics Nanjing University of Information Science and TechnologyNanjing 210044China

This paper is concerned with a third order in time linear Moore-Gibson-Thompson equation which describes the acoustic velocity potential in ultrasound wave *** by the work of Kaltenbacher,Lasiecka and Marchand(Control Cybernet.2011,40:971-988),we establish an observability inequality of the conservative problem,and then discuss the equivalence between the exponential stabilization of a dissipative system and the internal observational inequality of the corresponding conservative system.

关键词： Moore-Gibson-Thompson equation internal observability exponential stability

An Effective and Secure Access Control System Scheme in the Cloud

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Chinese Journal of Electronics 2015年第3期24卷 524-528页

作者： NIU Shaozhang tu Shanshan Huang Yongfeng Beijing Key Lab of Intelligent Telecommunication Software and Multimedia Beijing University of Posts and Telecommunications Department of Electronic Engineering Tsinghua University

Cloud computing services have got rapid development in the field of the lightweight terminal, especially wireless communications. The comprehensive access control system framework is proposed for the cloud. A kind of access control scheme based on attribute encryption is designed, in which lightweight devices can safely use cloud computing resources to outsource encrypt/decrypt operations, and not worry for exposing terminal sensitive *** scheme is verified by performance evaluation about the security, computing, storage, to ensure the legitimate interests of users in the cloud.

关键词： Cloud computing Access control Attribute encryption Security and efficiency

Field experiment for blasting crater

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Journal of China University of Mining and Technology 2008年第2期18卷 224-228页

作者： YE tu-qiang School of Civil ＆ Environment Engineering University of Science and Technology Beijing 100083 China

A series of single hole blasting crater experiments and a variable distance multi-hole simultaneous blasting experiment was carried in the Yunfu Troilite Mine,according to the Livingston blasting crater *** introduce in detail,our methodology of data collection and processing from our *** on the burying depth of the explosives,the blasting crater volume was fitted by the method of least squares and the characteristic curve of the blasting crater was obtained using the MATLAB soft- *** this third degree polynomial,we have derived the optimal burying depth,the critical burying depth and the optimal explosive specific charge of the blasting crater.

关键词： blasting crater collecting and processing of data optimal burying depth critical burying depth optimal explosive specific charge

A Free Surface Sharpening Strategy Using Optimization Method

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Journal of Thermal Science 2015年第6期24卷 544-548页

作者： SONG Hongchao JI Lucheng tu Shuangzhang School of Aerospace Engineering Beijing Institute of Technology Department of Computer Engineering Jackson State University

VOF method which consists in transporting a discontinuous marker variable is widely used to capture the free surface in computational fluid *** is numerical dissipation in simulations involving the transport of the *** dissipation makes the free surface lose its physical nature.A free surface sharpening strategy based on optimization method is presented in the *** strategy can keep the location of the free surface and local mass conservation at both time,and can also keep free surface in a constant *** is independent on the types of solvers and *** famous cases were chosen for verifying the free surface sharpening strategy *** show that the strategy has a very good performance on keeping local mass *** efficiency of prediction of the free surface is improved by applying the *** modeling of flow details such as drops can also be captured by this method.

关键词： VOF free surface sharpening optimization method local mass conservation

Distributed stochastic mirror descent algorithm for resource allocation problem

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Control Theory and Technology 2020年第4期18卷 339-347页

作者： Yinghui Wang Zhipeng tu Huashu Qin Key Lab of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China

In this paper,we consider a distributed resource allocation problem of minimizing a global convex function formed by a sum of local convex functions with coupling *** on neighbor communication and stochastic gradient,a distributed stochastic mirror descent algorithm is designed for the distributed resource allocation *** convergence to an optimal solution of the proposed algorithm is given when the second moments of the gradient noises are summable.A numerical example is also given to illustrate the effectiveness of the proposed algorithm.

关键词： Distributed Resource allocation problem Stochastic gradient Mirror descent

Geometrical entropy approach for variable structure multiple-model estimation

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Chinese Journal of Aeronautics 2015年第4期28卷 1131-1146页

作者： Shen-tu Han Xue Anke Peng Dongliang Institution of Information and Control Hangzhou Dianzi University

The variable structure multiple-model（VSMM） estimation approach, one of the multiple-model（MM） estimation approaches, is popular in handling state estimation problems with mode *** the VSMM algorithms, the model sequence set adaptation（MSA） plays a key *** MSA methods are challenged in both theory and practice for the target modes and the real observation error distributions are usually uncertain in *** this paper, a geometrical entropy（GE） measure is proposed so that the MSA is achieved on the minimum geometrical entropy（MGE） ***, the minimum geometrical entropy multiple-model（MGEMM） framework is proposed, and two suboptimal algorithms, the particle filter k-means minimum geometrical entropy multiple-model algorithm（PF-KMGEMM） as well as the particle filter adaptive minimum geometrical entropy multiple-model algorithm（PF-AMGEMM）, are established for practical *** proposed algorithms are tested in three groups of maneuvering target tracking scenarios with mode and observation error distribution *** simulations have demonstrated that compared to several existing algorithms, the MGE-based algorithms can achieve more robust and accurate estimation results when the real observation error is inconsistent with a priori.

关键词： Geometrical entropy Maneuvering target tracking Model sequence setadaptation Multiple-model estimation Particle filter