期刊：
International Journal of Digital Content Technology and its Applications,2012年6(19):253-261 ISSN：1975-9339
通讯作者：
Yang, G.(glyang@mail.ustc.edu.cn)
作者机构：
[Yang, Gelan] Department of Computer Science, Hunan City University, Yiyang, 413000, China;[Deng, Xiaojun] College of Computer and Communication, Hunan University of Technology, Zhuzhou, 412008, China;[Deng, Chuanchou] Department of Economic and Information, Hunan urban professional college Hunan, Changsha, 410137, China
摘要：
Manifold alignment is very useful in seeking the correspondence between high dimension data sets. In this paper, we proposed semi supervised manifold alignment based on improved local tangent space to solve this problem. LTSA is used here as a method to find the inner manifold constraint of each dataset, which exists a linear mapping from a high-dimensional data point to its local tangent space. We improved linear mapping of local tangent space, then additional knowledge about the intrinsic embedding coordinates of some of the samples were used to constrain the alignment. Experiments on aligning various high dimension data set data demonstrate the effectiveness.
作者机构：
[Jia, Liyuan] Hunan City Univ, Dept Comp Sci, Yiyang, Peoples R China.;[Huang, Li] Hunan City Univ, Dept Sci & Technol, Yiyang, Peoples R China.;[Li, Lei] Henan Xinyang Normal Coll, Dept Comp & Informat Technol, Xinyang, Peoples R China.
会议名称：
2nd International Conference on Swarm Intelligence, ICSI 2011
会议时间：
June 12, 2011 - June 15, 2011
会议地点：
Chongqing, China
会议主办单位：
(1) Department of Computer Science, Hunan City University, Yiyang, China; (2) Department of Science and Technology, Hunan City University, Yiyang, China; (3) Department of Computer and Information Technology, Henan Xinyang Normal College, Xinyang, China
会议论文集名称：
Lecture Notes in Computer Science
关键词：
face recognition;manifold learning;locality preserving;semi-supervised learning
期刊：
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms,2004年222(1-2):44-52 ISSN：0168-583X
通讯作者：
Fan, S
作者机构：
Inst Atom Energy, China Nucl Data Ctr, Beijing 102413, Peoples R China.;Shanghai Univ, Shanghai Appl Radiat Inst, Shanghai 201800, Peoples R China.;Hunan City Univ, Dept Phys, Yiyang 413000, Peoples R China.;NW Univ Xian, Dept Phys, Xian 710006, Peoples R China.;[Fan, S] Inst Atom Energy, China Nucl Data Ctr, POB 275,41, Beijing 102413, Peoples R China.
通讯机构：
[Fan, S] Inst Atom Energy, China Nucl Data Ctr, POB 275,41, Beijing 102413, Peoples R China.
摘要：
The simple Fermi-gas level density is replaced by the Ignatyuk formula in the many stage dynamical model (MSDM). The MSDM code has been being used to study the isotopic cross sections from proton-induced spallation reaction on Pb-208 at the energy of 1 GeV for the elements from manganese to lead. The MSDM simulations of charge and mass distributions are compared with the experimental data measured by Titarenko at ITEP and Enqvist at GSI. Good agreements are shown between the MSDM calculations and experimental data. The deviations from data mainly show up between the results of the LAHET code, INCL4 + KHSv3p model and Silberberg's semi-empirical method YIELDX. (C) 2004 Elsevier B.V. All rights reserved.
摘要：
A improved algorithm to perform channel and equalization for multiple input multiple systems in frequency and time-selective fading environments put forward. It contains two steps:training and training phase,improved kalman filtering,namly robust filtering(RKF), is exploited to estimate channel response(CIR). After that in tracking stage,the RKF minimum mean-square error feedback decision (MMSE-DIFE) cooperate to track the time-varying RKF recursions is presented and a closed-form solution for rate MIMO MMSE-DFE under perfect knowledge of CIR correct past decisions conditions is derived. In addition, regards unknown dc-offset due to zero frequency(IF) at the receiver as the mean of measurement which is estimated as a byproduct through robust rilters.Finally,it is compared with well-known ones,such as mean-square (LMS),recursive least square filtering (KF).All these show that the proposal exhibits performance.
作者机构：
[Yang, Gelan; Tu, Li] Hunan City Univ, Dept Comp Sci, Yiyang 413008, Peoples R China.;[Jin, Huixia] Hunan City Univ, Dept Phys & Telecom Engn, Yiyang 413008, Peoples R China.;[Yang, Yatao] Beijing Elect Sci & Technol Inst, Beijing 100070, Peoples R China.
会议名称：
International Conference on Computer and Electrical Engineering
会议时间：
DEC 20-22, 2008
会议地点：
Phuket, THAILAND
会议主办单位：
[Tu, Li;Yang, Gelan] Hunan City Univ, Dept Comp Sci, Yiyang 413008, Peoples R China.^[Jin, Huixia] Hunan City Univ, Dept Phys & Telecom Engn, Yiyang 413008, Peoples R China.^[Yang, Yatao] Beijing Elect Sci & Technol Inst, Beijing 100070, Peoples R China.
会议论文集名称：
International Conference on Computer and Electrical Engineering ICCEE
摘要：
It can be inescapable to solve the issue of hand-off authentication between the different trusted domains in the future wireless network development. By adopting threshold scheme, distributed hand-off authentication secure communication model is designed, then the process of cross certificate being issued and the steps of roaming hand-off authentication from node leaving former network to joining in new network are described and analyzed Without CA (Certificate Authority), a new roaming hand-off authentication scheme between the different trusted domains in multi-hop wireless network is proposed, an efficient method can be provided for nodes roaming hand-off and secure communication, the attack of single node being captured also can be avoided, which has better flexibility and security, and has important referenced value for the future application of wireless multi-hop network.
摘要：
The applications of neural associative memories in image retrieval are studied based on a class of reduced Cohen-Grossberg neural networks and continuous-time Hopfield network. Numerical simulations show that the designed networks can perform as efficient noise-reducing systems.
期刊：
Microwave and Optical Technology Letters,2008年50(8):2158-2161 ISSN：1098-2760
通讯作者：
Xu, Lan Yun
作者机构：
[Xu, Lan Yun] Hunan City Univ, Dept Phys & Elect Engn, Yiyang 413000, Hunan, Peoples R China.;[Yu, Jian Guo] Beijing No Fiberhome Technol Co Ltd, Beijing 100088, Peoples R China.;[Xu, Hong Yun] S China Univ Technol, Sch Comp Sci & Engn, Guangzhou 510640, Peoples R China.
通讯机构：
[Xu, Lan Yun] Hunan City Univ, Dept Phys & Elect Engn, Yiyang 413000, Hunan, Peoples R China.
摘要：
We theoretically study the electron transport properties for two coupled single-walled carbon nanotube quantum dots connected to metallic electrodes under the irradiation of an external electromagnetic field at low temperatures. Using the standard nonequilibrium Green's function techniques, we examine the time-averaged transmission coefficient and linear conductance. It is shown that by some numerical examples, the photon-assisted inter-dot coupling causes Fano resonance and the conductance of the system is sensitive to the external field parameters. The transport dependence on the external field parameters may be used to detect the high-frequency microwave irradiation.
关键词：
extraordinary optical transmission;enhanced;tapered nanohole arrays;sensitivity;figure of merit
摘要：
The phenomenon of extraordinary optical transmission (EOT) caused by light through metallic nanohole arrays has attracted significant attention due to its potential applications for monolithic color filters and ultrasensitive label-free biosensing. However, the EOT spectra of these nanohole arrays have multiple resonance peaks that are spectrally close to each other due to the multiple resonance modes generated by different media on the upper and lower surfaces of metal. In addition, owing to the absorption loss of metal and the scattering of holes, the EOT resonance peaks have low transmission coefficient for practical applications. In this work, utilizing a tapered nanohole arrays structure which is stacked by multiple cylindrical holes with the same depth but different radii, we show that tapered nanohole arrays can effectively suppress the excitation of multiple resonance peaks, and a single EOT peak emerges in the transmission spectrum and simultaneously exhibits significantly enhanced transmission ( approximately 7 times) and narrow linewidth ( approximately 15 nm). The enhanced EOT of tapered nanohole arrays can be also found in other wavelength regions and plasmonic materials. Benefiting from isolated transmission peak, high transmission efficiency and extremely narrow linewidth, a highly sensitive plasmonic nanosensor with sensitivity of 1580 nm/RIU and figure of merit of 105 can be attained. We believe that the tapered nanohole structure would enable applications for ultrasensitive sensors, switches and efficient filters.
摘要：
We consider the problem of the correspondence leaning of two high-dimensional data sets via the manifold leaning techniques. It's convenient for us to find the shared latent structure of the high-dimensional data sets, if they can be aligned in a uniformed low-dimensional data space. A local affine technique to address this problem is present here. Our method preserves more geometrical knowledge of the high-dimensional data sets and can easily project the new test data into the aligned data space by the local transformation obtained during the training step. The effectiveness of our algorithm is validated by applying it to the problem of image sequences alignment.
会议名称：
International Conference on Applied Physics and Industrial Engineering (ICAPIE)
会议时间：
MAR 01-02, 2012
会议地点：
Wuhan, PEOPLES R CHINA
会议主办单位：
[Li Jia-sheng;Yang Wu-mei] Yiyang Profess Technol Inst, Yiyang 413049, Peoples R China.^[Jiang Lian-jun;Qiu Biao] Hunan City Univ, Dept Phys & Elect Engn, Yiyang 413000, Peoples R China.
会议论文集名称：
Physics Procedia
关键词：
Matrix;Frequency Transformer;SPWM;Electronic shore power station
摘要：
The current port power supply to foreign ships, there are two ways power-type for owned diesel-powered and frequency conversion unit,In this paper,Proposed electronic shore power station, put forward electronic shore power station's concepts, and gives a whole building program of electronic shore power station based on matrix conversion algorithm, It will change 10kV/50Hz (35Kv/50Hz) input voltage into 440V/60Hz low-voltage, not only eliminating intermediate links, but also simplify the hardware circuit and reduce the production cost and improve the competitiveness of enterprises. Simulation and experimental results show that this program has a built shore power station of high power factor, sinusoidal effective, low distortion, environmental pollution and the advantages,It will be very definite practical significance. (C) 2011 Published by Elsevier B.V. Selection and/or peer-review under responsibility of ICAPIE Organization Committee.
摘要：
Fingerprint segmentation is usually to identify non-ridge regions and unrecoverable low quality ridge regions and exclude them as background so as to reduce the time of image processing and avoid detecting false features. In ridge regions, including high quality and low quality, there are often some remaining ridges which are the afterimage of the previously scanned finger and are expected to be excluded from the foreground. However, existing segmentation methods do not take the case into consideration, and often, the remaining ridge regions are falsely taken as foreground. This paper proposes two steps for fingerprint segmentation aiming to exclude the remaining ridge region from the foreground. The non-ridge regions and unrecoverable low quality ridge regions are removed as background in the first step, and then the foreground produced by the first step is further analyzed so as to remove the remaining ridge region. The proposed method turns out effective in avoiding detecting false ridges and in improving minutiae detection.
作者机构：
[Wu, Xiang-hua] Hunan City Univ, Network Informat Ctr, Yiyang, Peoples R China.;[Wu, Xiang-hua] Cent S Univ, Coll Informat Sci & Engn, Changsha, Hunan, Peoples R China.;[Cao, Li-jun] Hunan City Univ, Dept Comp Sci, Yiyang, Peoples R China.
会议名称：
International Conference on Future Computer Science and Application (FCSA 2011)
会议时间：
JUL 16-17, 2011
会议地点：
Kota Kinabalu, MALAYSIA
会议主办单位：
[Wu, Xiang-hua] Hunan City Univ, Network Informat Ctr, Yiyang, Peoples R China.^[Wu, Xiang-hua] Cent S Univ, Coll Informat Sci & Engn, Changsha, Hunan, Peoples R China.^[Cao, Li-jun] Hunan City Univ, Dept Comp Sci, Yiyang, Peoples R China.
关键词：
learning manifold;out of sample;dynamic neighborhood;LLE
摘要：
Manifold learning was designed to identify the meaningful low-dimensional structure hidden in the high-dimensional data, most of the existing algorithms are non-incremental. In this paper an incremental algorithm based on locally reconstruction is proposed, the algorithm encountered lead to the discussion on the impact of dynamic neighborhood choose, and ultimately the incremental algorithm based on locally reconstruction of dynamic neighborhood is designed. The algorithm takes the satisfying experimental results in the data set both of natural and artificial.
期刊：
CHINESE JOURNAL OF ATOMIC AND MOLECULAR PHYSICS,2002年19(1):79-82 ISSN：1000-0364
作者机构：
[Pan Liuxian] Department of Physics, Yiyang Teacher's College;[Zhou Guanghui] Department of Physics, Hunan Normal University;[Li Shushen] 中科院半导体所
摘要：
Nonlinear wave equation for a one-dimensional anharmonic crystal lattice in terms of its microscopic parameters is obtained by means of a continuum approximation. Using a small time scale transformation, the nonlinear wave equation is reduced to a combined KdV equation and its single soliton solution yields the supersonic kink form of nonlinear elastic waves for the system.
作者机构：
[Huang, Li; Jia, Liyuan] Hunan City Univ, Dept Comp Sci, Yiyang 413000, Hunan, Peoples R China.;[Li, Lei] HeNan XinYang Normal Coll, Coll Comp & Informat Technol, Henan 464000, Peoples R China.;[Gong, Wenyin] China Univ Geosci, Sch Comp Sci, Wuhan 430074, Peoples R China.
会议名称：
5th International Conference on Rough Set and Knowledge Technology (RSKT)
会议时间：
OCT 15-17, 2010
会议地点：
Beijing, PEOPLES R CHINA
会议主办单位：
[Jia, Liyuan;Huang, Li] Hunan City Univ, Dept Comp Sci, Yiyang 413000, Hunan, Peoples R China.^[Li, Lei] HeNan XinYang Normal Coll, Coll Comp & Informat Technol, Henan 464000, Peoples R China.^[Gong, Wenyin] China Univ Geosci, Sch Comp Sci, Wuhan 430074, Peoples R China.
会议论文集名称：
Lecture Notes in Artificial Intelligence
摘要：
Differential evolution (DE) is an efficient and versatile evolutionary algorithm for global numerical optimization over continuous domain. Although DE is good at exploring the search space, it is slow at the exploitation of the solutions. To alleviate this drawback, in this paper, we propose a generalized hybrid generation scheme, which attempts to enhance the exploitation and accelerate the convergence velocity of the original DE algorithm. In the hybrid generation scheme the operator with powerful exploitation is hybridized with the original DE operator. In addition, a self-adaptive exploitation factor is introduced to control the frequency of the exploitation operation. In order to evaluate the performance of our proposed generation scheme, the migration operator of biogeography-based optimization is employed as the exploitation operator. Moreover, 23 benchmark functions (including 10 test functions provided by CEC2005 special session) are chosen from the literature as the test suite. Experimental results confirm that the new hybrid generation scheme is able to enhance the exploitation of the original DE algorithm and speed up its convergence rate.
