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2015

Record 25 of

Title:Age estimation based on canonical correlation analysis and extreme learning machine

Author(s):Si, Jie(1); Feng, Jun(1); Bu, Qirong(1); Sun, Xiaohu(1); He, Xiaowei(1); Qiu, Shi(2)
Source: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) Volume: 9428 Issue: DOI: 10.1007/978-3-319-25417-3_79 Published: 2015
Abstract:We proposed a novel age estimation scheme based on feature fusion according to Canonical Correlation analysis. Specifically, the shape and texture attributes of feature points in human faces are characterized by both Active Appearance Model (AAM) and Local Binary Pattern (LBP).Then, the canonical projective vectors are built via canonical correlation analysis for feature fusion. To improve computational efficiency, we first introduce Extreme Learning Machine (ELM) to the field of age estimation, and uncover the relation of the fused features and ground-truth age values for age prediction. The experimental results conducted on FG-NET age database show that the proposed method achieves better estimation accuracy while requires less computation time than the state of art algorithms such as BIF. ? Springer International Publishing Switzerland 2015.
Accession Number: 20155201711254
Record 26 of

Title:Design and experiment of cyclic olefin copolymer based 2.5 THz hollow-core photonic crystal fiber

Author(s):Chen, Qi(1,4); Zhu, Wenjing(1); He, Xiaoyang(1,4); Kong, Depeng(2); Miao, Jing(2); Luo, Zhenfei(3,4); Zhou, Xun(3,4); Yang, Chun(1,4); Zhang, Jian(1,4); Zhou, Chuanming(4)
Source: Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams Volume: 27 Issue: 8 DOI: 10.11884/HPLPB201527.083102 Published: August 1, 2015
Abstract:Efficient transmission of terahertz (THz) wave is an important research direction in development of THz technology. Polymeric photonic crystal fiber (PCF) is ideal in THz waveguide transmission because of the advantages of low loss, low dispersion and fine flexibility to bend. Based on the full vector finite element method (FEM), a hollow-core PCF with operating frequency of 2.5 THz is designed. Some samples made of cyclic olefin copolymer (COC) are fabricated. The fiber transmission performance of THz wave is measured by using the CO2 pump laser THz source. The measured minimum loss is 0.17 dB/cm and the average loss is about 0.5 dB/cm. The fluctuation of transmission loss is less than 5% after the fiber is bent 90°, showing good flexibility to bend. The measured mode field distribution results of the output port show that the optical fiber transmits signals through the main mode, so the THz energy is well bound in the core of optical fiber. ?, 2015, Editorial Office of High Power Laser and Particle Beams. All right reserved.
Accession Number: 20153601250881
Record 27 of

Title:Multi-view subspace clustering

Author(s):Gao, Hongchang(1); Nie, Feiping(1); Li, Xuelong(2); Huang, Heng(1)
Source: Proceedings of the IEEE International Conference on Computer Vision Volume: 2015 International Conference on Computer Vision, ICCV 2015 Issue: DOI: 10.1109/ICCV.2015.482 Published: February 17, 2015
Abstract:For many computer vision applications, the data sets distribute on certain low-dimensional subspaces. Subspace clustering is to find such underlying subspaces and cluster the data points correctly. In this paper, we propose a novel multi-view subspace clustering method. The proposed method performs clustering on the subspace representation of each view simultaneously. Meanwhile, we propose to use a common cluster structure to guarantee the consistence among different views. In addition, an efficient algorithm is proposed to solve the problem. Experiments on four benchmark data sets have been performed to validate our proposed method. The promising results demonstrate the effectiveness of our method. ? 2015 IEEE.
Accession Number: 20162502506835
Record 28 of

Title:Facile synthesis of wheat bran-derived honeycomb-like hierarchical carbon for advanced symmetric supercapacitor applications

Author(s):Wang, Dewei(1); Min, Yonggang(1); Yu, Youhai(1)
Source: Journal of Solid State Electrochemistry Volume: 19 Issue: 2 DOI: 10.1007/s10008-014-2639-0 Published: February 2014
Abstract:A novel honeycomb-like hierarchical carbon (HHC) derived from wheat bran has been obtained by the facile and environmentally friendly method via hydrothermal carbonization of wheat bran followed by KOH activation process at mild conditions without any template. The prepared carbon has a large Brunauer–Emmett–Teller (BET) surface area of 2,189.2?m2?g?1 and pore volumes of up to 1.1?cm3?g?1. The performance of the HHC as electrodes for electrochemical supercapacitors was evaluated in a symmetric two-electrode cell configuration with 6?M KOH and 1?M TEABF4/AN as the electrolytes. Electrochemical studies show that the supercapacitors based on the as-prepared HHC exhibit an excellent capacitive performance in both aqueous and organic electrolytes. We attribute the outstanding capacitive behavior of HHC to their unique structure and high accessible surface area. Considering that the cost-effective and feasible process, this facile technique presented here will not only provide a promising method for the production of biomass-derived hierarchical carbon but also put forward the application of carbon materials in energy storage and conversion. ? 2014, Springer-Verlag Berlin Heidelberg.
Accession Number: 20144100082630
Record 29 of

Title:Aliasing inuence reduction method for the estimation of compressive imaging system's modulation transfer function

Author(s):Pan, Jinfeng(1,2,3); Qiu, Yuehong(2)
Source: Journal of Information and Computational Science Volume: 12 Issue: 13 DOI: 10.12733/jics20106457 Published: September 1, 2015
Abstract:A method to reduce the signal aliasing influence on the Modulation Transfer Function (MTF) estimation is proposed in this study. The reduction of signal aliasing influence is realized by fitting Fermi function to the edge spread function that is estimated by modified slanted-edge method. The proposed method is suitable to measure the MTF of compressive imaging system, which is an aliased imaging system. The results of experiments show that the accuracy of the estimated MTF is improved when the proposed method is used. The cutoff frequency and the area under MTF of the compressive imaging system are also evaluated based on the proposed MTF estimation method. ?, 2015, Journal of Information and Computational Science. All right reserved.
Accession Number: 20153901305225
Record 30 of

Title:Small target detection in hyperspectral remote sensing image based on adaptive parameter SVM

Author(s):Wu, Yiquan(1,2); Zhou, Yang(1); Long, Yunlin(1)
Source: Guangxue Xuebao/Acta Optica Sinica Volume: 35 Issue: 9 DOI: 10.3788/AOS201535.0928001 Published: September 10, 2015
Abstract:As for the problem of small target detection in hyperspectral remote sensing image, a detection method based on adaptiveparameter support vector machine (SVM) is proposed. The low dimensional information of the hyperspectral image is obtained using the method of principal component analysis (PCA) and the redundancy of data is reduced. Then, small targets are positioned fast and roughly by an unsupervised detection method, and the posterior information of SVM is got by the position result. The kernel parameter of SVM is determined adaptively based on the posterior information and the criteria of divergence in the kernel space. The best hyperplane in the kernel space for the segmentation of targets and background is found by the SVM. Pixels are separated to targets and background by the best hyperplane. The accurate and stable target detection result is obtained by iteration. A large number of experimental results show that, compared to the existing methods such as RX method, kernel RX method and support vector data description (SVDD) method, the proposed method is more effective to detect small targets accurately in the hyperspectral remote sensing image. ?, 2015, Chinese Optical Society. All right reserved.
Accession Number: 20154401475219
Record 31 of

Title:Interval-Valued intuitionistic fuzzy prioritized ordered weighted averaging operator and its application in threat assessment

Author(s):Wu, Hua(1,2); Su, Xiuqin(1)
Source: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) Volume: 9141 Issue: DOI: 10.1007/978-3-319-20472-7_2 Published: 2015
Abstract:The threat assessment of aerial targets is the basic method for improving the ability of air defense system to deal with multiple objects in complex environment. Considering both the uncertain and imprecise information and prioritization relationship of attributes, we propose an interval-valued intuitionistic fuzzy prioritized ordered weighted averaging (IVIF-POWA) operator-based threat assessment model. The contribution of this paper is twofold: 1) An IVIF-POWA operator is proposed, which expresses the imprecise and uncertain information with more suitable interval-valued intuitionistic fuzzy sets. 2) This work proposes a simple yet effective threat assessment model based on IVIF-POWA operator. Its efficiency and effectiveness are validated by comparing it with some popular operators in a numerical example. ? Springer International Publishing Switzerland 2015.
Accession Number: 20154801602889
Record 32 of

Title:Passive mode-locking of transform-limited hundred-ps long pulses using an integrated nonlinear microring resonator

Author(s):Reimer, Christian(1); Kues, Michael(1); Wetzel, Benjamin(1); Roztocki, Piotr(1); Little, Brent E.(2); Chu, Sai T.(3); Moss, David J.(1,4); Morandotti, Roberto(1)
Source: Integrated Photonics Research, Silicon and Nanophotonics, IPRSN 2015 Volume: Issue: DOI: 10.1364/iprsn.2015.im4b.6 Published: 2015
Abstract:We observe passive mode-locking at ultra-low power levels generating near transformlimited 570ps pulses at a 14.8MHz repetition rate. This is achieved by using high nonlinear enhancement in a CMOS-compatible microring resonator incorporated in a SOA based nonlinear loop-mirror laser architecture. ? 2015 OSA.
Accession Number: 20153301166151
Record 33 of

Title:Toward a biometric-aware cloud service engine for multi-screen video applications

Author(s):Hu, Han(1); Jin, Yichao(2); Wen, Yonggang(2); Chua, Tat-Seng(1); Li, Xuelong(3)
Source: Computer Communication Review Volume: 44 Issue: 4 DOI: 10.1145/2619239.2631430 Published: February 25, 2015
Abstract:The emergence of portable devices and online social networks (OSNs) has changed the traditional video consumption paradigm by simultaneously providing multi-screen video watching, social networking engagement, etc. One challenge is to design a unified solution to support ever-growing features while guarantee system performance. In this demo, we design and implement a multi-screen technology to provide multi-screen interactions over wide area network (WAN). Furthermore, we incorporate face-detection technology into our system to identify users' bio-features and employ a machine learning based traffic scheduling mechanism to improve the system performance.
Accession Number: 20151100632236
Record 34 of

Title:Design of low-dispersion output coupler for Cr:LiSAF lasers

Author(s):Liao, Chunyan(1); Qin, Junjun(2); Zhu, Xiuhong(1)
Source: Proceedings of SPIE - The International Society for Optical Engineering Volume: 9449 Issue: DOI: 10.1117/12.2083289 Published: 2015
Abstract:An designed output coupler used for the dispersion compensation in Cr:LiSAF femtosecond lasers is reported. It is composed of 50 alternating Ta2O5 and SiO2 layers whose thicknesses are obtained by computer optimization to provide low transmittance and as little as possible group delay dispersion. The optimized output coupler has continuous low transmittance of 1% and group delay dispersion of 0 ±6fs2 from 750nm to 900nm, which can meet the need of dispersion compensation in Cr:LiSAF lasers. ? 2015 SPIE.
Accession Number: 20151100635567
Record 35 of

Title:Ultra-low power passive mode-locking using an integrated nonlinear microring resonator

Author(s):Reimer, Christian(1); Kues, Michael(1); Wetzel, Benjamin(1); Roztocki, Piotr(1); Little, Brent E.(2); Chu, Sai T.(3); Moss, David J.(1,4); Morandotti, Roberto(1)
Source: CLEO: Science and Innovations, CLEO-SI 2015 Volume: Issue: DOI: 10.1364/CLEO_SI.2015.STh4H.8 Published: May 4, 2015
Abstract:Using high nonlinear enhancement in a CMOS compatible microring resonator incorporated in a SOA based nonlinear loop-mirror laser architecture, we observe passive modelocking at extremely-low power levels generating 570ps pulses at a 14.8MHz repetition rate. ? OSA 2015.
Accession Number: 20152801012668
Record 36 of

Title:Passively Q-switched Nd:GGG laser with a SWCNT as saturable absorber

Author(s):Chu, Hongwei(1); Zhao, Shengzhi(1); Yang, Kejian(1); Li, Yufei(1); Li, Dechun(1); Li, Guiqiu(1); Zhao, Jia(1); Qiao, Wenchao(1); Li, Tao(1); Wang, Yonggang(2); Wang, Yishan(2)
Source: Optical and Quantum Electronics Volume: 47 Issue: 3 DOI: 10.1007/s11082-014-9945-8 Published: March 2015
Abstract:A diode-pumped passively Q-switched Nd:GGG laser with a single-walled carbon nanotube as saturable absorber has been realized. A maximum average output power of 1.24?W and a minimum pulse duration of 49.8?ns were obtained at the incident pump power of 7.69?W. Corresponding to a maximum single pulse energy and a highest peak power were 4.3?μJ and 85?W, respectively. The pulse repetition rates varied from 62 to 292?kHz versus the increase of the incident pump power. ? 2014, Springer Science+Business Media New York.
Accession Number: 20143600030687