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Variable separation solutions and new solitary wave structures to the (l+l)-dimensional Ito system
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作者 徐昌智 何宝钢 张解放 《Chinese Physics B》 SCIE EI CAS CSCD 2006年第1期1-7,共7页
A variable separation approach is proposed and extended to the (1+1)-dimensional physics system. The variable separation solution of (1-F1)-dimensional Ito system is obtained. Some special types of solutions such... A variable separation approach is proposed and extended to the (1+1)-dimensional physics system. The variable separation solution of (1-F1)-dimensional Ito system is obtained. Some special types of solutions such as non-propagating solitary wave solution, propagating solitary wave solution and looped soliton solution are found by selecting the arbitrary function appropriately. 展开更多
关键词 (1+1)-dimensional Ito system variable separation approach new solitary wave structures
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A New Simulation of Track Structure of Low-Energy Electrons in Liquid Water:Considering the Condensed-Phase Effect on Electron Elastic Scattering
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作者 刘玮 谭震宇 C.Champion 《Chinese Physics Letters》 SCIE CAS CSCD 2016年第9期35-38,共4页
A new Monte Carlo simulation of the track structure of low-energy electrons (〈10keV) in liquid water is presented. The feature of the simulation is taken into consideration of the condensed-phase effect of liquid w... A new Monte Carlo simulation of the track structure of low-energy electrons (〈10keV) in liquid water is presented. The feature of the simulation is taken into consideration of the condensed-phase effect of liquid water on electron elastic scattering with the use of the Champion model, while the dielectric response formalism incorporating the optical-data model developed by Emfietzoglou et al. is applied for calculating the electron inelastic scattering. The spatial distributions of energy deposition and inelastic scattering events of low-energy electrons with different primary energies in liquid water are calculated and compared with other theoretical evaluations. The present work shows that the condensed-phase effect of liquid water on electron elastic scattering may be of the influence on the fraction of absorbed energy and distribution of inelastic scattering events at lower primary energies, which also indicate potential effects on the DNA damage induced by low-energy electrons. 展开更多
关键词 of as in A new Simulation of Track structure of Low-Energy Electrons in Liquid Water:Considering the Condensed-Phase Effect on Electron Elastic Scattering for CCPI on is
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New Recognition about Faulted Structures in Tarim Basin
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《China Oil & Gas》 CAS 1996年第1期63-63,共1页
NewRecognitionaboutFaultedStructuresinTarimBasinInpastthreeyears,thecomprehensivepetroleumgeologicalteamofth... NewRecognitionaboutFaultedStructuresinTarimBasinInpastthreeyears,thecomprehensivepetroleumgeologicalteamoftheMinistryofGeolog... 展开更多
关键词 new Recognition about Faulted structures in Tarim Basin
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若干广义非平衡Feistel结构的量子分析研究 被引量:1
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作者 于博 孙兵 +2 位作者 刘国强 罗宜元 张志宇 《密码学报》 CSCD 2021年第6期960-973,共14页
分组密码结构对密码算法的安全性有着非常重要的作用.随着量子计算的发展,以Simon算法、Grover算法等为代表的量子搜索算法,广泛应用于分组密码安全性研究领域,并产生了一定的威胁.本文首次研究了对5种广义非平衡Feistel结构的量子攻击,... 分组密码结构对密码算法的安全性有着非常重要的作用.随着量子计算的发展,以Simon算法、Grover算法等为代表的量子搜索算法,广泛应用于分组密码安全性研究领域,并产生了一定的威胁.本文首次研究了对5种广义非平衡Feistel结构的量子攻击,对n-cell结构构造了n+1轮量子区分器;对New Structure Ⅰ/Ⅲ/Ⅳ结构分别构造了6轮/9轮/5轮量子区分器;对FBC-like结构构造了3轮量子区分器,并利用Simon算法对这5种分组密码结构进行了量子区分攻击.进一步,将Simon算法和Grover算法相结合对n-cell结构、New Structure Ⅰ/Ⅲ/Ⅳ结构和FBC-like结构进行了量子密钥恢复攻击,并分析了攻击的时间复杂度.攻击r>n+1轮n-cell结构的时间复杂度为O(2^((r-n-1)k/2));攻击r>6/14/9轮New Structure Ⅰ/Ⅲ/Ⅳ结构的时间复杂度分别为O(2^((r-6)k/2))/O(2^([2k+(r-14)k]/2))/O(2^([2k+(r-9)k]/2));攻击r>5轮FBC-like结构的时间复杂度为O(2^([3k+(r-5)·2k]/2)).结果表明这些攻击的效果均优于使用Grover算法进行穷举攻击. 展开更多
关键词 Simon算法 GROVER算法 n-cell结构 new structure系列结构 FBC-like结构
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