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Search Results: 1 - 10 of 149659 matches for " LI Ye-ping "
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The Comparison Principle of Multidelay Hyperneutral Type Continuous System
多滞后超中立型连续系统的比较原理

MENG Pei-yuan,LI Ye-ping,
孟培源
,黎野平

控制理论与应用 , 2001,
Abstract: We prove the comparison principles of the multidelay hyperneutral constant linear continuous system, the multidelay hyperneutral time varying linear continuous system, the multidelay hyperneutral non linear continouous system by inducing step by step, respectively, and obtain the precise sufficient conditions.
Design and Implementation of LSM Based Secure Auditing System
基于LSM框架的审计系统的设计与实现

WANG Fu-Liang,HE Ye-Ping,LI Li-Ping,
王富良
,贺也平,李丽萍

中国科学院研究生院学报 , 2005,
Abstract: LSM is the access control framework for Linux system. In the ANSHENG secure operating system V4.0,a secure auditing system based on the extended Linux Security Modules was introduced.Compared with the secure auditing system of ANSHENG secure operating system V2.0,the LSM based auditing system has a better performance.Last,the auditing system developed a method to detect covered channels in our ANSHENG secure operating system V4.0.
New Advances Based on the DCT Transforming Coding
基于DCT编码的新进展

LU Ye-ping,LI Feng-ting,ZHU Ren-yi,CHEN Zhao-long,
鲁业频
,李凤亭,朱仁义,陈兆龙

中国图象图形学报 , 2004,
Abstract: DCT(Discrete Cosine Transform) transforming coding has been widely used coding-standards such as JPEG,MPEG and H.26x exclusive of JPEG2000 at present. The compressing codings for image/video signals have been advanced to a new stage since the EZW(Embedded Zerotree Wavelet) had been introduced by Shapiro and the SPIHT(Set partition in hierarchical trees) applied by Said et al,which are a competitive challenge against the conventional DCT's coding. However,DCT's coefficients have a similar multiresolutional attributes after reorganization its datum like wavelet transforming. There are many excellent performances in the based-DCT such as arbitrarily shaped DCT,region support DCT and morphological representation of DCT coefficients are proposed.Digital watermarking,image resizing and pattern cognition can be done through utilizing DCT's coefficients,and so on.The capability and performance of the DCT have further been promoted to a higher phase. For instance,object-based coding for DCT is a promising technique for next-generation coding.Besides,the experiments show that MR-DCT(Morphological representation of DCT) is among the state-of-the-art DCT-based image coders reported in the literature.What mentioned above have been studied and analyzed deeply in this paper.Hereby,the future development of DCT is also conjected.
Efficient Remote Attestation Mechanism with Privacy Protection
一种保护隐私的高效远程验证机制

XU Zi-Yao,HE Ye-Ping,DENG Ling-Li,
徐梓耀
,贺也平,邓灵莉

软件学报 , 2011,
Abstract: 基于Merkle哈希树提出了一种效率高、方式灵活并能保护平台隐私的远程验证机制.针对特定的目标应用场景,分析IMA(integrity measurement architecture)体系架构的不足,详细描述基于Merkle哈希树的远程验证机制的体系架构和度量验证过程,阐述新机制对现有TPM(trusted platform module)的功能增强即TPM_HashTree命令的功能及伪代码,并分析讨论新机制的优点.
Imaging the Electron-Boson Coupling in Superconducting FeSe
Can-Li Song,Yi-Lin Wang,Ye-Ping Jiang,Zhi Li,Lili Wang,Ke He,Xi Chen,Jennifer E Hoffman,Xu-Cun Ma,Qi-Kun Xue
Physics , 2013, DOI: 10.1103/PhysRevLett.112.057002
Abstract: Scanning tunneling spectroscopy has been used to reveal signatures of a bosonic mode in the local quasiparticle density of states of superconducting FeSe films. The mode appears below Tc as a 'dip-hump' feature at energy \Omega ~ 4.7 kBTc beyond the superconducting gap \Delta. Spectra on strained regions of the FeSe films reveal simultaneous decreases in \Delta and \Omega. This contrasts with all previous reports on other high-Tc superconductors, where \Delta locally anti-correlates with \Omega. A local strong coupling model is found to reconcile the discrepancy well, and to provide a unified picture of the electron-boson coupling in unconventional superconductors.
Clark-Wilson Modeling of Secure ARP
安全ARP的Clark-Wilson模型化

CHEN Xiao-Yan,HE Ye-Ping,XU Zi-Yao,DENG Ling-Li,
陈小岩
,贺也平,徐梓耀,邓灵莉

计算机科学 , 2008,
Abstract: Vulnerabilities in the ARP protocol became a threat to TCP/IP security.Countermeasures to these vulnerabilities based on Symmetric-Key Cryptography or Asymmetric-Key Cryptography are proposed recently.In the present paper,the principle of ARP attacks is analyzed,and the most popular secure ARP protocols are discussed.Clark-Wilson commercial model is introduced to analyze the integrity of ARP.While applying Clark-Wilson commercial model to the ARP integrity policy,all of the secure protocols failed to pass the rules of Clark-Wilson model.With the classical scenes of Clark-Wilson model,corresponding attack scenes are presented.
The Design and Implementation of High-level Secure Operating System SECIMOS by the Way of Improvment/Enhancement
改进增强型高安全等级操作系统SECIMOS的设计与实现

YUAN Chun-Yang,LI Lin,SHI Wen-Chang,LIANG Hong-Liang,HE Ye-Ping,
袁春阳
,李琳,石文昌,梁洪亮,贺也平

计算机科学 , 2007,
Abstract: SECIMOS, a high-level secure operating system based on Linux is developed by the way of improve/enhance. Its design and implementation is discussed in this paper. The system framework and key techniques, including access control, accountability and assura
Suppression of Superconductivity by Twin Boundaries in FeSe
Can-Li Song,Yi-Lin Wang,Ye-Ping Jiang,Lili Wang,Ke He,Xi Chen,Jennifer E. Hoffman,Xu-Cun Ma,Qi-Kun Xue
Physics , 2012, DOI: 10.1103/PhysRevLett.109.137004
Abstract: Low-temperature scanning tunneling microscopy and spectroscopy are employed to investigate twin boundaries in stoichiometric FeSe films grown by molecular beam epitaxy. Twin boundaries can be unambiguously identified by imaging the 90{\deg} change in the orientation of local electronic dimers from Fe site impurities on either side. Twin boundaries run at approximately 45{\deg} to the Fe-Fe bond directions, and noticeably suppress the superconducting gap, in contrast with the recent experimental and theoretical findings in other iron pnictides. Furthermore, vortices appear to accumulate on twin boundaries, consistent with the degraded superconductivity there. The variation in superconductivity is likely caused by the increased Se height in the vicinity of twin boundaries, providing the first local evidence for the importance of this height to the mechanism of superconductivity.
Flowering Characteristics and Fertility of Common Wild Rice in Danzhou, Hainan, China
海南儋州普通野生稻开花习性及育性研究

WANG Xiao-ling,YU Jie,GUO An-ping,PANG Ye-ping,PENG Yu-f,LIU En-ping,KONG Hu,HE Li-ka,
王晓玲
,余洁,郭安平,庞业平,彭于发,刘恩平,孔华,贺立卡

热带亚热带植物学报 , 2008,
Abstract: 对海南儋州普通野生稻(Oryza rufipogon Griff.)的开花习性、花粉育性和结实率进行了研究.结果表明:海南儋州普通野生稻居群在原生境的开花时间为10月初到12月初;晴天开花时间主要集中在11:30-11:50,最适开花的气温为29.84±2.27℃,相对湿度为53.33±6.63%,阴天开花时间要推迟20-30 min;每朵颖花从开颖到闭颖历时70-100 min,颖花开放历时10-20 s,50-60 s之后开始散粉,闭颖约需要1 h.花时与风速呈负相关,与温度呈正相关.单穗可育率大于50%的居多.结实率介于0-45%,其中多数小于10%.此居群与当地常规稻的开花有一定的差异,初步提出了对此居群普通野生稻原生境资源的合理利用和有效保护的策略.
STUDY ON THE TWO-PHOTON RESONACE-ENHANCED MULTIPHOTON IONIZATION OF CF RADICALS: DETERMINATION AND ANALYSIS OF 5p RYDBERG STATE
CF自由基二光子共振增强多光子电离研究:5p Rydberg态观测与分析

LI QUAN-XIN,ZHANG QUN,SHU JI-NIAN,XU YE-PING,SONG QIN-HUA,CHEN CONG-XIANG,YU SHU-QIN,MA XING-XIAO,
李全新
,张 群,束继年,徐业平,宋钦华,陈从香,俞书勤,马兴孝

物理学报 , 1999,
Abstract: 报道260—360nm波长范围内CF自由基(2+1)共振增强多光子电离(REMPI)激发谱的研究-CF自由基通过Ar/CF4,Ar/CF2Cl2或Ar/CF3COOH混合气体的直流脉冲放电产生-在260—295nm波长范围内,观测到一个新的高Rydbery态振动序列,其带源位于295-22nm(2hν=67746cm-1),分析表明,该振动序列来源于5p Rydberg态的二光子共振激发,测得的振
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