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Entropic stochastic resonance in a confined structure driven by dichotomous noise and white noises

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chinese Physics B 2012年第8期21卷 71-77页

作者：郭锋程晓锋李少甫曹文黎恒 School of information engineering Southwest University of Science and Technology research center of Laser Fusion China Academy of Engineering Physics

The entropic stochastic resonance （ESR） in a confined system subjected to dichotomous noise and white noise and driven by a periodic sinusoidal force along the x axis of the structure and a time-dependent force in the declining direction, is investigated. Under the adiabatic approximation condition and based on the two-state theory, the expression of the output signal-to-noise ratio （SNR） is obtained. The results show that the SNR is a non-monotonic function of the strengths of dichotomous noise, white noise, and correlated strength of correlated noise. In addition, the SNR varies non-monotonically with the increase of the shape parameters of the confined structure, and also with the increase of the constant force along the y axis of the structure. The influence of the correlation rate of the dichotomous noise, and that of the frequency of the periodic force on the SNR are discussed.

关键词： entropic stochastic resonance dichotomous noise correlated noise square-wave signal,signal-to-noise ratio

chinese Text Emotion Classification Based On Emotion Dictionary

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Chinese Text Emotion Classification Based On Emotion Diction...

2.10 IEEE 2.d Symposium on Web Society

作者： Jun Li~1,Yuemei Xu~2.Hao Xiong~2.and Yan Wang~3.1.National Network New Media engineering {2. {2.,Institute of Acoustics,{3. academy of Sciences Beijing,china 2.High-performance Network Laboratory,Institute of Acoustics,{3. academy of Sciences Beijing,china 3.National Computer System engineering {2. Institute of china Beijing,china

＜正＞Recently,much work have been done on text emotion ***,they mainly focused on the emotions expressed by authors instead of the *** addition, researches on simplified chinese text emotion classification are extremely *** this paper,we proposed a simplified chinese text emotion classification based on readers’ emotions. Mass of documents with readers’ emotion tag are used as raw text sets,and Vector Space Model is used to represent each *** emotion dictionary is created semi-automatically by using WordNet to build text *** then train a Support Vector Machine classifier on preprocessed data with four emotion classes,and compared the predicate results with that from Naive Bayes *** results indicate that our approach performs much better on classify accuracy and efficiency.

关键词： Emotion Classification Vector Space Model Support Vector Machine Mutual information

A novel quantum information hiding protocol based on entanglement swapping of high-level Bell states

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chinese Physics B 2015年第5期24卷 231-238页

作者：徐淑奖陈秀波王连海钮心忻杨义先 Shandong Provincial Key Laboratory of Computer Networks Shandong Computer Science Center (National Supercomputer Center in Jinan) information security {2. State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications State Key Laboratory of information security Institute of Information Engineering Chinese Academy of Sciences

Using entanglement swapping of high-level Bell states, we first derive a covert layer between the secret message and the possible output results of the entanglement swapping between any two generalized Bell states, and then propose a novel high-efficiency quantum information hiding protocol based on the covert layer. In the proposed scheme, a covert channel can be built up under the cover of a high-level quantum secure direct communication （QSDC） channel for securely transmitting secret messages without consuming any auxiliary quantum state or any extra communication resource. It is shown that this protocol not only has a high embedding efficiency but also achieves a good imperceptibility as well as a high security.

关键词： quantum information hiding quantum covert'channel entanglement swapping high-level Bell states

research on Extracting Forest Stand information based on {2. Laser Scanner Techniques

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Research on Extracting Forest Stand Information based on 3D ...

2.12.IEEE International Conference on Computer Science and Automation engineering（CSAE 2.12.

作者： LU Kangning 1 ZHANG Huaiqing 2.GAO Shizeng 3.JIANG Xian 4 research Institute of Forestry Resource {2. Techniques {2. {3. of Forestry Beijing china WU Xueming 1 ZHANG Ning 2.KUANG Yilong 3.research center of Forestry Remote Sensing & {2. engineering Central South University of Forestry & Technology Changsha Hu’nan china

The development of laser scanning technology provides a new way to make people obtain spatial information from the traditional manual to *** this study,we take the FARO Laser Scanner Photon as the data obtained platform,we scanned a 10 m×15 m plot,total 2. trees in Pinus bungeana ***,extract every tree’s data from the point cloud and measure the tree height and diameter at breast height（DBH）.After make accuracy precision and correlation analysis with the measured data,it is showed that the method mentioned can be satisfied the accuracy requirement of forest investigation and can be used to measure the tree height and *** with traditional technology,the applications of 3. laser scanning technique have a broad development space on tree measuring.

关键词： Stand Laser Scanner Point Clouds Accuracy Precision

Fine mapping and marker-assisted selection (MAS) of a low glutelin content gene in rice

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Cell research 2005年第8期15卷 622-630页

作者： Yi Hua WANG1, Shi Jia LIU1, Su Lan JI1, Wen Wei ZHANG1, Chun Ming WANG1, Ling JIANG1, Jian Min WAN1,2.* 1The State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University Jiangsu Re- search center of Plant engineering, Nanjing 2.0095,{2. 2.rop Science {3. Institute, chinese academy of Agricultural Science, Beijing 100081,{2. The State Key Laboratory of Crop Genetics and Germplasm Enhancement Nanjing Agricultural University Jiangsu research center of Plant {2. Jiangsu research center of Plant {2. Nanjing China Crop Science research Institute Chinese Academy of Agricultural Science Beijing China

Rice with low glutelin content is suitable as functional food for patients affected with diabetes and kidney failure. The fine mapping of the gene(s) responsible for low glutelin content will provide information regarding the distribution of glutelin related genes in rice genome and will generate markers for the selection of low glutelin rice varieties. Following an SDS-PAGE screen of rice germplasm from Taihu Valley of china, Japonica selection W{2.60 is identified to be a novel mutant characterized with low glutelin content. For fine mapping the mutant gene for low glutelin content, F2.and F{2.populations were derived from a cross between W{2.60 and Jingrennuo. SDS-PAGE analysis of the total endosperm protein showed that the low glutelin content trait was controlled by a single dominant nuclear gene. Genetic mapping, using SSRs, located this gene to chromosome 2. in the region between SSR2.001/SSR2.004 and RM1{2.8. The dis- tances of the two markers to the target gene were 1.1 cM and {2.8 cM respectively. By semi-quantitative RT-PCR analysis, the transcripts of GluB4/GluB5 genes located within the region do not change. However, GluB5 gene located proximal to SSR2.001/SSR2.004 was specifically reduced. SSR profiles of seven Japonica varieties were compared with that of W{2.60 for loci in the relevant genetic region. The markers SSR2.004 and RM1{2.8 were used for marker- assisted selection. The selection efficiencies of SSR2.004 and RM1{2.8 were 96.8% and 92.7% respectively. This provides a standard starting point for the breeding of low glutelin content rice varieties in china.

关键词： fine mapping low glutelin content marker-assisted selection mutant rice.

ON DECORRELATED FAST CIPHER

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Journal of Electronics(china) 2000年第1期17卷 94-96页

作者： Wu Wenling Li Bao Feng Denguo Qing Sihan(engineering research {2. for {3. security Technology,chinese academy of Sciences, Beijing 100080)

Decorrelated Fast Cipher(DFC) is a candidate for the Advanced Encryption Standard (AES). It is shown that the cryptographic properties of the confusion permutation of DFC are weak in this paper. With the same F-function of DFC, a Feistel cipher VDFC which has no resistance against differential cryptanalysis is constructed. This demonstrates the importance of the key addition into DFC sufficiently. As a result, DFC may not be qualified candidate for the AES.

关键词： Round function Permutation Differential cryptanalysis Nonlinearity

Efficient DPCA SAR imaging with fast iterative spectrum reconstruction method

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Science china(information Sciences) 2012年第8期55卷 1838-1851页

作者： FANG Jian1,ZENG JinShan1,XU ZongBen1&ZHAO Yao2.1M inistry of Education Key Lab for Intelligent Networks and Network security Xi'an Jiaotong University,Xi'an 710049,china 2. ational Key Laboratory of Science and Technology on Microwave Imaging&Institute of Electronics,{2. {3. of Sciences,Beijing 100049,china Ministry of Education Key Lab for Intelligent Networks and Network security Xi’an Jiaotong University Xi’an China National Key Laboratory of Science and Technology on Microwave Imaging & Institute of Electronics Chinese Academy of Sciences Beijing China

The displaced phase center antenna(DPCA)technique is an effective strategy to achieve wide-swath synthetic aperture radar(SAR)imaging with high azimuth ***,traditionally,it requires strict limitation of the pulse repetition frequency(PRF)to avoid non-uniform ***,any deviation could bring serious ambiguity if the data are directly processed using a matched *** break this limitation,a recently proposed spectrum reconstruction method is capable of recovering the true spectrum from the nonuniform ***,the performance is sensitive to the selection of the *** regularization based imaging may provide a way to overcome this *** existing time-domain method,however,requires a large-scale observation matrix to be built,which brings a high computational *** this paper,we propose a frequency domain method,called the iterative spectrum reconstruction method,through integration of the sparse regularization technique with spectrum analysis of the DPCA *** approximately expressing the observation in the frequency domain,which is realized via a series of decoupled linear operations,the method performs SAR imaging which is then not directly based on the observation matrix,which reduces the computational cost from O(N2.to O(N log N)(where N is the number of range cells),and is therefore more efficient than the time domain *** sparse regularization scheme,realized via a fast thresholding iteration,has been adopted in this method,which brings the robustness of the imaging process to the PRF *** provide a series of simulations and ground based experiments to demonstrate the high efficiency and robustness of the *** simulations show that the new method is almost as fast as the traditional mono-channel algorithm,and works well almost independently of the PRF ***,the suggested method can be accepted as a practical and efficient wide-swath SAR imaging technique.

关键词： displaced phase center antenna sparse regularization iterative thresholding spectrum reconstruction

research on Quaternion Spline Interpolation Algorithm for 5-axis Machining

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Research on Quaternion Spline Interpolation Algorithm for 5-...

2.09 ISECS International Colloquium on Computing, Communication, Control, and Management

作者： Peinan Li1,2.3.1 College of Computing&Communication engineering, Graduate University of the {2. {2. of Sciences,Beijing,100049,{3.. 3.MSI research Institute,Wolfson School of Mechanical and Manufacturing engineering,Loughborough University,Loughborough,LE11 3.U,UK.Ruifeng Guo1,2.2.Shenyang Institute of Computing Technology,{2. {2. of Sciences,National engineering research center For High-end CNC,Shenyang 110171,{3..

Applications for 5-axis have increased tremendously in recent *** curved surfaces using CNC software represents a challenging *** conventional interpolation algorithms for 5-axis CNC machining are focused on studying a curved surface is approximated by a linear grid of closely spaced points,which are traversed in a linear or circular interpolation mode to machine the desired shape. However,it can not only cause machining path error,but also cause a lot of wear and tear on the *** overcome these problems,a research on interpolation algorithm for 5-axis tool paths generated using quaternion-quintic spherical Bézier spline for tool positioning and orientation was presented In this *** proposed algorithm was verified by Matlab *** analysis of results was also provided in this *** proposed algorithm is suitable for 5-axis high- speed and high-precision machining.

关键词： spline interpolation quaternion 5-axis machining

网络安全的三道防线一密码、协议和防火墙(英文)

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计算机工程 1999年第S1期25卷 3-7页

作者：卿斯汉中科院信息安全技术工程研究中心北京100080

讨论了密码、协议和防火墙边三道网络安全防线。首先评价了美国国家标准技术局颁布的15个先进加密标准的候选算法，从中可以看出密码的发展趋势。然后重点探讨了电子商务协议的逻辑分析。最后介绍了超级防火墙的新思想及其功能和设计原理。

关键词：先进加密标准(AES) 电子商务协议 Kailar逻辑超级防火墙