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IEEE Conference on Industrial Electronics and Applications (ICIEA)

作者： Fengling Han Jiankun Hu Mohammed Alkhathami Kai Xi State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University China School of Computer Science & IT Royal Melbourne Institute of Technology Melbourne VIC Australia School of Engineering and Information Technology University of New South Wales Canberra ACT Australia

In this paper, the compatibility of fingerprint images captured with mobile cameras (touch-less) with existing touch-based commercial fingerprint verification software VeriFinger SDK is investigated. The touch-less fingerprint images taken with mobile cameras are different with the fingerprint images captured from touch-based scanners. The research in this paper shows that the commercial fingerprint verification software VeriFinger SDK can load the photographed fingerprint images, and can extract minutiae from the photographed images. Furthermore, the minutiae matching of a sample against a reference have been successfully performed based on the photographed fingerprint images using VeriFinger SDK. This research result will make the mobile fingerprint verification more interoperable which has significant contribution to the security of m-commerce applications.

关键词： Fingerprint recognition Mobile communication Image matching Cameras Fingers Software Mobile handsets

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Research and design of a fiber-optic temperature sensing film probe

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Zhongguo Jiguang/Chinese Journal of Lasers 2011年第SUPPL. 1期38卷 s107004-1-s107004-4页

作者： Hu, Jiahui Tao, Chunxian Zhang, Dawei Huang, Yuanshen Ni, Zhengji Shanghai Key Laboratory of Modern Optical System School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology Shanghai 200093 China

In order to solve nonlinear and unstable problem in measurement, a fiber-optic temperature sensing film probe was designed. The material of the sensing film probe is germanium. The sensing probe is a double-layered film structure, in which the low refractive index material is silicon dioxide and the high refractive index material is germanium. The detection principle is based on the changes of refractive index of germanium because of the temperature change, resulting in changes in the reflectivity. Practically, we can get the temperature figures by measuring the reflected power. The line linearization of the sensor, which was obtained over a temperature measurement range of 30°C-130°C is 99.85%. The results show that the conclusion can meet the purpose of linearization of fiber temperature sensor.

关键词： Thin films

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Memetic figure selection for cluster expansion in binary alloy systems

Memetic figure selection for cluster expansion in binary all...

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IEEE Workshop on Memetic Computing (MC)

作者： Zexuan Zhu Zhen Ji Xiaofeng Fan Jer-Lai Kuo Shenzhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen China School of Physical and Mathematical Sciences Nanyang Technological University Singapore Institute of Atomic and Molecular Sciences Academia Sinica Taipei Taiwan

Cluster expansion provides a powerful tool in materials modeling. It has enabled an efficient prediction of the atomic properties of materials with the combination of the modern quantum calculation theory. To construct an accurate cluster expansion model, a few important cluster figures should be identified. This paper proposes a novel figure selection method based on memetic algorithm (MA), which is a synergy of genetic algorithm (GA) and orthogonal matching pursuit (OMP) based memetic operation. The memetic operation is designed to fine-tunes the solutions of GA and accelerate the convergence of the search. The performance of the proposed method is evaluated on two binary alloy datasets. Comparative study to other state-of-the-art figure selection methods demonstrates that the proposed method is capable of obtaining better or competitive prediction accuracy and searching the figure space efficiently.

关键词： Memetics Genetic algorithms Gallium Biological cells Matching pursuit algorithms

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ISM: Intent-perceptible service migration model for IP network survivability

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Tien Tzu Hsueh Pao/Acta Electronica Sinica 2011年第12期39卷 2768-2775页

作者： Zhao, Er-Hu Yang, Xiao-Long Xu, Jie Long, Ke-Ping Zhang, Dan Research Centre for Optical Internet and Mobile Information Networks University of Electronic Science and Technology of China Chengdu Sichuan 611731 China National Key Lab. of Integrated Information System Tech. Institute of Software Chinese Acad. of Sci. Beijing 100190 China School of Computer and Communication Engineering University of Science and Technology Beijing Beijing 100083 China 706 Institute The Second Academy of China Aerospace Beijing 100854 China

The existing service migration methods bring the server cluster heavy burden, and their time spending is so high that seriously affects the service continuity. In order to enhance the survivability of IP network services, the paper puts forward an intent-perceptible service migration model (ISM). In this model, we design a novel trigger mechanism and object selecting method for service migration, and make the service migration intention perceptible for the client with the cooperation of the server. The evaluation results show that ISM model can not only ensure the service invulnerability by maintaining a high randomness of service migration, but also improve the service continuity by reducing the service gap time spending on service migration to the maximum extent. Therefore, ISM model can enhance IP network survivability efficiently.

关键词： Internet protocols

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SiN based on-chip microresonator frequency combs and application to optical arbitary waveform generation

SiN based on-chip microresonator frequency combs and applica...

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IEEE Photonics Conference (IPC)

作者： Fahmida Ferdous Houxun Miao Daniel E. Leaird Kartik Srinivasan Jian Wang Lei Chen Andrew M. Weiner School of Electrical and Computer Engineering Purdue University West Lafayette IN USA Nanocenter University of Maryland College Park MD USA Center for Nanoscale Science and Technology National Institute of Standards and Technology Gaithersburg MD USA Purdue University System West Lafayette IN US

We report spectral phase characterization, compression, and shaping of on-chip microresonator combs. Both ~5nm and ~1nm free spectral range devices are explored.

关键词： Correlation Optical pumping Optical pulse shaping Microcavities Ultrafast optics

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Study on the symmetric structure of surface plasmon resonance excited by planar waveguide

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Guangdianzi Jiguang/Journal of Optoelectronics Laser 2011年第12期22卷 1821-1825页

作者： Liu, Jin Chen, Bao-Xue Yang, Hai-Ma Key Laboratory of Modern Optical System of Shanghai School of Optical-Electrical Information and Computer Engineering Shanghai University for Science and Technology Shanghai 200093 China College of Electronic and Electrical Engineering Shanghai University of Engineering Science Shanghai 201620 China

A symmetric structure of surface plasmon resonance excited by planar waveguide is studied. The structure is the metal layer covering both sides of the media with a certain thickness. The theoretical analysis shows that the TM0 mode of that structure is surface wave and the relationship between the equivalent refractive index and the interval of metal films is studied under a certain wavelength. Ion-exchange technology is used to prepare the multi-mode planar waveguide. The planar waveguide is used to excite the plasmon surface wave of the symmetric structure and its equivalent refractive index is tested. Plasma surface wave is excited when the concentration of glycerin solution is 0-70% and the thickness is 300 nm and 500 nm respectively. Results show that the refractive index matching of this structure can be adjusted by changing the thickness of media. The problem that the equivalent refractive index of ion-exchange planar waveguide is large and it is difficult to excite the plasmon surface wave between the metal and the media to achieve sensing is solved.

关键词： Surface plasmon resonance

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Adiabatic Passage Based on the Calcium Active Optical Clock

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Chinese Physics Letters 2010年第7期27卷 105-107页

作者：解晓鹏庄伟陈景标 Institute of Quantum Electronics and State Key Laboratory of Advanced Optical Communication System & Network School of Electronics Engineering & Computer Science Peking University Beijing 100871

We propose a new application of the optical adiabatic passage effect for the excitation of a thermal atomic beam, which will be used in the calcium active optical clock to produce population inversion. A comparison between the optical adiabatic passage effect and the Rabi π pulse is investigated, 99% of the calcium atoms in the atomic beam that has a wide velocity distribution will be excited to the upper state for population inversion using the adiabatic passage, while 76% at most will be excited to the excited state using the π pulse with suitable parameters.

关键词： ATOMIC beams OPTICAL properties NUCLEAR excitation MATRIX inversion CALCIUM PARTICLE beams

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Energy Optimal Selection of Access Points in Wireless Sensor Networks

Energy Optimal Selection of Access Points in Wireless Sensor...

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International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing (IMIS)

作者： Qin Xin Xiaolan Yao Wei He State Key Laboratory of Power Transmission Equipment & System Security and New Technology College of Electrical Engineering Chongqing University China Department of Applied Mathematics Universite Catholique de Louvain Louvain-la-Neuve Belgium School of Computer Science National University of Defense Technology Changsha China

In a Wireless Sensor Networks (WSN), there are normally one or several sensor nodes working as Access Points (AP), which are able to provide a relay for other sensors to an external Internet connection. Since WSNs are resource constrained, the selection of APs is very crucial in economizing power usage. In this paper, we study the optimal selection of APs to maximize the WSN lifetime. This issue is closely related to routing protocols in WSN. We propose a new adaptive multi-path routing protocol to reduce the energy consumption and guarantee QoS requirements with respect to transmission delay. In this paper, we formulate the issues we mentioned above as a non-linear NP-hard optimization problem. Due to the high computation complexity of this problem, we proposed two polynomial-time approximation algorithms to optimally select APs in the WSN that based on the framework in. Combining with our new adaptive multi-path routing protocol, our preliminary simulation results show that our schemes can save more than 20% energy compared with the existing APs selection schemes with single path routing protocols.

关键词： Wireless sensor networks Routing protocols Wireless communication Equations Mobile communication Routing Internet

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Data Mining in Earth system science (DMESS 2011)

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Procedia computer science 2011年 4卷 1450-1455页

作者： Forrest M. Hoffman J. Walter Larson Richard Tran Mills Bjørn-Gustaf J. Brooks Auroop R. Ganguly William W. Hargrove Jian Huang Jitendra Kumar Ranga R. Vatsavai Computational Earth Sciences Group Oak Ridge National Laboratory Oak Ridge TN USA Department of Earth System Science University of California Irvine CA USA Mathematics and Computer Science Division Argonne National Laboratory Argonne IL USA Computation Institute University of Chicago/Argonne National Laboratory Chicago IL USA School of Computer Science The Australian National University Canberra ACT AUSTRALIA Department of Electrical Engineering & Computer Science University of Tennessee Knoxville TN USA Center for Climatic Research University of Wisconsin Madison WI USA Geographic Information Science and Technology Group Oak Ridge National Laboratory Oak Ridge TN USA Eastern Forest Environmental Threat Assessment Center (EFETAC) USDA Forest Service Asheville NC USA

From field-scale measurements to global climate simulations and remote sensing, the growing body of very large and long time series Earth science data are increasingly difficult to analyze, visualize, and interpret. Data mining, information theoretic, and machine learning techniques—such as cluster analysis, singular value decomposition, block entropy, Fourier and wavelet analysis, phase-space reconstruction, and artificial neural networks—are being applied to problems of segmentation, feature extraction, change detection, model-data comparison, and model validation. The size and complexity of Earth science data exceed the limits of most analysis tools and the capacities of desktop computers. New scalable analysis and visualization tools, running on parallel cluster computers and supercomputers, are required to analyze data of this magnitude. This workshop will demonstrate how data mining techniques are applied in the Earth sciences and describe innovative computer science methods that support analysis and discovery in the Earth sciences.

关键词： Data mining Remote sensing High performance computing Segmentation Change detection Synthesis visualization

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Quantum Phase Transition of the Bosonic Atoms near the Feshbach Resonance in an Optical Lattice

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Chinese Physics Letters 2010年第12期27卷 65-68页

作者：李犇陈景标 Institute of Quantum Electronics and State Key Laboratory of Advanced Optical Communication System ~z Network School of Electronics Engineering & Computer Science Peking University Beijing 100871

The quantum phase transition from the Mott insulator to the superfluid phases of the bosonic atoms trapped in an optical lattice, in which the on-site interaction carl be tuned by a Feshbach resonance, is investigated by a variational approach within mean-field theory. We derive an extended Bos^Hubbard model to describe this ultracold atomic system. By theoretical calculation and analysis, the phase diagram is shown clearly, and we find an exciting and novel phenomenon that is the appearance of the Mort insulator-sea （MI-sea）. Meanwhile, the experimental feasibility of observing the MI-sea is discussed by analyzing the published data related to the Fashbaeh resonance at present. Finally, the potential application of the MI-sea for quantum information processing and quantum computation is also discussed in detail

关键词： Atomic and molecular physics Quantum gases, liquids and solids Computational physics Statistical physics and nonlinear systems

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