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A New （t, n） Threshold Signature Scheme Withstanding the Conspiracy Attack

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A New （t, n） Threshold Signature Scheme Withstanding the C...

Bloch constant of holomorphic mappings on the unit polydisk of C^n

The 1st Chinese Conference on Trusted Computing and information Security

作者： XIE Qi, YU Xiu-yuan Department of Mathematics,zhejiang University. hangzhou 310027. zhejiang,china: school of information and engineering, hangzhou teachers college. hangzhou ,310012. zhejiang, china hangzhou teachers college, hangzhou 310012, zhejiang, china

＜正＞ A conspiracy attack is proposed to show that Wang-Li’s scheme is insecure, because any t or more group members can impersonate other t members to sign any message without holding the responsibility. To avoid t... 详细信息

关键词： cryptography threshold signature conspiracy attack identifier tracing

来源： cnki会议评论

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Science china Mathematics 2008年第4期51卷 652-659页

作者： WANG JianFei~(1+) LIU TaiShun~2 1 college of Mathematics and Physics information engineering zhejiang Normal University Jinhua 321004,china 2 Department of Mathematics Huzhou teachers college Huzhou 313000 china college of Mathematics and Physics Information Engineering Zhejiang Normal University Jinhua China Department of Mathematics Huzhou Teachers College Huzhou China

In this paper,we give a definition of Bloch mappings defined in the unit polydisk D^n, which generalizes the concept of Bloch functions defined in the unit disk *** is known that Bloch theorem fails unless we have some restrictive assumption on holomorphic mappings in several complex *** shall establish the corresponding distortion theorems for subfamiliesβ(K)andβ_(loc)(K) of Bloch mappings defined in the polydisk D^n,which extend the distortion theorems of Liu and Minda to higher *** an application,we obtain lower and upper bounds of Bloch constants for various subfamilies of Bloeh mappings defined in D^*** particular,our results reduce to the classical results of Ahlfors and Landau when n=1.

关键词： Bloch constant Bloch mapping univalent ball critical point Julia lemma locally biholomorphic mapping Landau constant

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信息技术课程教学中学生成绩的多元评价模式

学科教育 2002年第6期 47-48,F003页

作者：谢琪杭州师范学院信息工程学院计算机系浙江杭州310036

本文讨论了信息技术课程教学中学生成绩多元评价模式的原则及评价的内容 ,包括课堂平时成绩、电子作品集、考试 ,并提出了具体的实施策略。

关键词：信息技术课程学生成绩评价模式信息技术教学教学评价多元评价评价内容

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素性检测的并行计算

计算机工程与应用 2004年第31期40卷 52-53,98页

作者：祝建中杭州师范学院信息工程学院杭州310012

提出了一种基于Java的素性检测并行计算的结构和实现方法,就RMI系统、多线程同步、容错与负载均衡等关键技术进行了讨论,并给出了实验结果及分析。

关键词：素性检测并行计算远程方法调用多线程

The study of energy bands in nucleus ^(102)Zr

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Science china(Physics,Mechanics & Astronomy) 2010年第1期53卷 106-110页

作者： DONG GuoXiang 1,2 , YU ShaoYing 1,2,3 , LIU YanXin 1 , SHEN CaiWan 1,2,4 & DONG YongSheng 1,2,5I school of Science, Huzhou teachers college, Huzhou 313000, china 2.school of Science and information engineering, zhejiang Normal University, Jinhua 321000, china 3 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, china 4 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, china 5 Department of Physics, Jining teachers college, Jining 012000, china school of Science Huzhou Teachers College Huzhou China school of Science and information engineering Zhejiang Normal University Jinhua China Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou China Department of Physics Jining Teachers College Jining China

Theoretical calculations of the energy bands in nucleus 102 Zr are carried out by taking the projected shell model approach, which has reproduced the experimental data. In addition, by analyzing band-head energies, corresponding configurations of yrast band, quasi-particle rotational bands and side bands, we have worked out the microscopic formation mechanism of axially symmetric deformation bands: The low-excitation deformation bands are attributed to the high-j intruder states 1g 7/2 and 1h 11/2 in the N=4, 5 shells; the quasi-particles in the orbit v5/2-[532], v3/2+[411] and v3/2+[413] in particular play an important role in the deformation of 102 Zr.

关键词： projected shell model yrast band quasi-particle rotational band side band

Theory study of shapes in ^(187,189)Tl nuclei

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Science china(Physics,Mechanics & Astronomy) 2009年第6期52卷 818-821页

作者： LIU YanXin1, YU ShaoYing1,2,3, SHEN CaiWan1,5 & DONG YongSheng1,2,4 1 school of Science, Huzhou teachers college, Huzhou 313000, china 2.school of Science and information engineering, zhejiang Normal University, Jinhua 321000, china 3 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, china 4 Department of Physics, Jining teachers college, Jining 012000, china 5 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, china school of Science Huzhou Teachers College Huzhou China school of Science and information engineering Zhejiang Normal University Jinhua China Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou China Department of Physics Jining Teachers College Jining China

The nuclear shapes of 187,189Tl were investigated theoretically in this work. The total routhian surface (TRS) calculations were performed for N=106 and 108 isotopes of thallium (Z=81). The single-particle energies were obtained from the deformed Woods-Saxon potential, with the Lipkin-Nogami (LN) treatment of pairing. It is found that the collective oblate rotation coexists with the high-K prolate rotation. Superdeformed prolate rotation is included in this calculation.

关键词： nuclear shape oblate rotation prolate rotation

A fusion algorithm for remote sensing images based on nonsubsampled pyramids and bidimensional empirical decomposition

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Science china(Technological Sciences) 2010年第S1期53卷 196-204页

作者： ZHANG XiaoDong 1,WANG WenBo 2,WANG DiFeng 3 & ZHANG Yu 4 1 State Key Laboratory of information engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,china 2 college of Sciences,Wuhan University of Science and Technology,Wuhan 430065,china 3State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,State Oceanic Administration,hangzhou 310012,china 4 Spatial information Technology Application Research Institute,Changjiang River Scientific Research Institute,Wuhan 430010,china State Key Laboratory of information engineering in Surveying Mapping and Remote Sensing Wuhan University Wuhan China college of Sciences Wuhan University of Science and Technology Wuhan China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography State Oceanic Administration Hangzhou China Spatial information Technology Application Research Institute Changjiang River Scientific Research Institute Wuhan China

In order to improve the quality of remote sensing image fusion,a new method combining nonsubsampled Laplacian pyramid (NLP)and bidimensional empirical mode decomposition(BEMD)is ***,the high resolution panchromatic image (PAN)is decomposed using NLP until the approximate component and the low resolution multispectral image(MS)contain features with a similar ***,the approximation component and the MS are decomposed by BEMD,resulting in a number of bidimensional intrinsic mode functions(BIMF)and a residue *** instantaneous frequency is computed in 4 directions of the *** the positive or negative coefficients in the corresponding position,a weighted algorithm is designed for fusing the high frequency details using the instantaneous frequency and the coefficient absolute value of the BIMFs as fusion *** fused image is then obtained through inverse BEMD and *** results have illustrated the advantage of this method over the IHS,DWT andà-Trous wavelet in both spectral and spatial detail qualities.

关键词： bidimensional empirical mode decomposition nonsubsampled pyramid instantaneous frequency remote sensing image fusion

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按位链接快速排序算法

计算机工程 2002年第5期28卷 30-32页

作者：谢琪沈光星杭州师范学院信息工程学院计算机系杭州310036 杭州师范学院数学与应用研究所杭州310036

提出了一种对任意整数都适用的按位链接快速排序算法,其时间复杂性为(),只需附加其中为待排序数组最大数的位On2n+10k(k数个存储空间。)

关键词：链接快速排序算法时间复杂计算机

Calculation of triaxial superdeformation in ^(174)Hf

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Science china(Physics,Mechanics & Astronomy) 2007年第5期50卷 553-557页

作者： YU ShaoYing1,2,4, LI XiaoWei2, SHEN CaiWan1,5 & CHEN YongShou3,4 1 school of Science, Huzhou teachers college, Huzhou 313000, china 2 college of Mathematics, Physics and information engineering, zhejiang Normal University, Jinhua 321000, china 3 china Institute of Atomic Energy, Beijing 102413, china 4 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, china 5 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, china school of Science Huzhou Teachers College Huzhou China college of Mathematics Physics and Information Engineering Zhejiang Normal University Jinhua China Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou China china Institute of Atomic Energy Beijing China

A two-dimensional Total Routhian Surface (TRS) calculation with the fixed hexa- decapole deformation ε4 = 0.03 was carried out for several configurations of 174Hf. Results indicate that the shell corrections have an important contribution to the formation of triaxial superdeformation in 174Hf and some possible configuration assignments are made to the 4 TSD bands experimentally found in 174Hf.

关键词： Total Routhian Surface (TRS), triaxial superdeformation, configuration