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Spectrum Slicing-based, High-Q, Photonic Microwave Filter Using the Combination of Incoherent Continuous-Wave Supercontinuum and Dispersion-Profiled Fiber

Spectrum Slicing-based, High-Q, Photonic Microwave Filter Us...

引用

Optical Fiber Communication (OFC) Conference

作者： Ju Han Lee You-Min Chang Sang Bae Lee School of Electrical and Computer Engineering Faculty of Engineering University of Seoul Seoul South Korea College of Electronics and Information Kyung Hee University Yongin si Kyunggi South Korea Photonics Research Team Korea Institute of Science and Technology Seoul South Korea

ISBN: (纸本)9781557528599

We experimentally demonstrate the combined use of an ultra-broadband, continuous- wave supercontinuum and a dispersion-profiled fiber to implement a high-performance photonic microwave filter based on the spectrum-slicing architecture. Such a Q-factor as high as 140 can be achieved due to both the ultra-broad bandwidth of the CW SC and the compensation of the inherent optical comb filter wavelength chirping through the dispersion-profiled fiber.

关键词： Microwave filters Optical fiber filters Optical filters Fiber nonlinear optics Optical pumping Q factor Optical signal processing Optical fibers Nonlinear optics Optical fiber dispersion

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Wireless intelligent incontinence management system using smart diapers

Wireless intelligent incontinence management system using sm...

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International Conference on Electrical engineering/electronics, computer, Telecommunications and Information technology, ECTI-CON

作者： L. M. Ang S. H. Ow K. P. Seng Z. H. Tee B. W. Lee M. K. Thong P. J. H. Poi S. Kunanayagam School of Electrical and Electronics Engineering University of Nottingham Selangor Darul Ehsan Malaysia Department of Software Engineering Faculty of Computer Science and Information Technology University Malaya Kuala Lumpur Malaysia Faculty of Medicine University Malaya Kuala Lumpur Malaysia Department of Paediatrics University Malaya Medical Centre Kuala Lumpur Malaysia

This paper presents a wireless intelligent incontinence management system being developed for the University Malaya Medical Center (UMMC) that utilizes ldquosmartrdquo diapers to discreetly monitor and estimate wetness events, detect other relevant clinical conditions and alert staff by transmitting information via wireless technology to an intelligent central management system. We describe the hardware and software modules of the system and give results conducted on diaper experiments and the transmission range of the wireless technology.

关键词： Wireless sensor networks Monitoring Software Wireless communication Artificial intelligence Hospitals Moisture

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Pulmonary tumor volume delineation in PET images using deformable models

Pulmonary tumor volume delineation in PET images using defor...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Aparna Kanakatte Jayavardhana Gubbi Bala Srinivasan Nallasamy Mani Tomas Kron David Binns Marimuthu Palaniswami Department of Electrical and Computer Systems Monash University Clayton VIC Australia Department of Electrical and Electronics Engineering University of Melbourne Parville VIC Australia Faculty of Information Technology Monash University Clayton VIC Australia Peter MacCallum Cancer Centre East Melbourne VIC Australia

Lung cancer is one of the most lethal form of cancer worldwide. The tumor present in the lungs is not static and changes its shape and position during each breathing cycle. In order to segment the tumor, the physicians manually outline the tumor on each slice. Slice by slice manual segmentation is prone to errors and causes physician fatigue. A semi-automatic method to segment and track the tumor in all the frames of PET data is proposed in this paper. The tumor is segmented from each slice of the first frame using wavelet features and support vector machine classifier. This segmented tumor, after validated by the experts is used in initialization of the contour for segmentation of the tumor in subsequent frames by the level set method. Another important contribution of this paper is setting up tumor volume obtained from the first frame as the termination condition for the level set method. The results obtained from the proposed methodology are very promising and eliminates the need for manual tumor segmentation. Our proposed technique also maintains consistent segmentation and the results obtained are not dependent on the operator as is the case in manual segmentation.

关键词： Tumors Level set Image segmentation Lung Shape Deformable models Support vector machines

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Simplification of Frequency Test for Random Number Generation Based on Chi-Square

Simplification of Frequency Test for Random Number Generatio...

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4th Advanced International Conference on Telecommunications (AICT 2008)

作者： Kruawan Wongpanya Keattisak Sripimanwat Kanok Jenjerapongvej Department of Information Engineering Faculty of Engineering King Mongkut''s Institute of Technology Ladkrabang Thailand Optical and Quantum Communications Laboratory National Electronics and Computer Technology Center Thailand

This paper presents the simplified method of random test suite based on the frequency (block) test. The test is used to check the first property of random numbers which is to have the same probabilities of being "1" and "0". Random numbers are used for the secret key generation which is an essential part for cryptographic system. Before encryption, secret keys need to pass the random test in order to make it harder for outsiders to predict the pattern of the secret keys. Basically, the decision making of whether the secret keys are truly random, is based on the test statistics computation. Due to the motivation that the classical method based on the NIST Statistical Test Suite (NIST STS) is complex and redundant, the reduction of this random testing procedure is then proposed. The introduced technique does not need to compute the Incomplete Gamma Function (Igamc) nor the P-value for the decision making of test results unlike that of the classical method. Thus, it results to the reduction in the testing decision time. In this technique, the decision making and conclusion can be determined from the critical value of chi-square (x{sup}2) directly. Its results without having to compute Igamc is compared to that of the classical method. In the test, the significance level (α) is set to be 0.01 or 0.05 in order to obtain the critical values and the critical regions. Resulting to the confidence of 99% or 95% respectively. Next, overall performance is evaluated by computing the percentage difference in order to demonstrate that the proposed value gives the same result as that of the classical method. Therefore, this proposed technique can be applied as that of the conventional based on the frequency (block) test.

关键词： Frequency Random number generation Electronic equipment testing NIST Statistical analysis Cryptography Decision making Quantum computing Probability Laboratories

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High pressure structural phase transitions in Sr from ab initio calculations

引用

Physical Review B 2008年第17期77卷 174118-174118页

作者： A. Phusittrakool T. Bovornratanaraks R. Ahuja U. Pinsook Large-Scale Simulation Research Laboratory National Electronics and Computer Technology Center Pathumthani 12120 Thailand Department of Physics Faculty of Science Chulalongkorn University Bangkok 10330 Thailand Condensed Matter Theory Group Department of Physics Uppsala University Box 530 SE-751 21 Uppsala Sweden Applied Materials Physics Department of Materials and Engineering Royal Institute of Technology (KTH) S-100 44 Stockholm Sweden

The pressure-induced phase transition in strontium, including the recent experimental observation of high-pressure phase Sr-IV, was investigated theoretically using the projector augmented wave method. We also concentrated on the experimentally observed β-tin structure as this structure has never been found in any other alkaline-earth metals. The fcc-bcc phase transition was reproduced, but Sr-IV was found to be energetically more stable than the β-tin structure at all pressures. By considering enthalpy, the sequence of the phase transitions along the pressure range is fcc→bcc→Sr-IV. With some detailed examination, we concluded that the β-tin structure is either a metastable state or a coexisting phase, and further experimental investigation is suggested.

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DECIGO: The Japanese space gravitational wave antenna

引用

Journal of Physics: Conference Series 2009年第1期154卷

作者： Sato, Shuichi Kawamura, Seiji Ando, Masaki Nakamura, Takashi Tsubono, Kimio Araya, Akito Funaki, Ikkoh Ioka, Kunihito Kanda, Nobuyuki Moriwaki, Shigenori Musha, Mitsuru Nakazawa, Kazuhiro Numata, Kenji Sakai, Shin-Ichiro Seto, Naoki Takashima, Takeshi Tanaka, Takahiro Agatsuma, Kazuhiro Aoyanagi, Koh-Suke Arai, Koji Asada, Hideki Aso, Yoichi Chiba, Takeshi Ebisuzaki, Toshikazu Ejiri, Yumiko Enoki, Motohiro Eriguchi, Yoshiharu Fujimoto, Masa-Katsu Fujita, Ryuichi Fukushima, Mitsuhiro Futamase, Toshifumi Ganzu, Katsuhiko Harada, Tomohiro Hashimoto, Tatsuaki Hayama, Kazuhiro Hikida, Wataru Himemoto, Yoshiaki Hirabayashi, Hisashi Hiramatsu, Takashi Hong, Feng-Lei Horisawa, Hideyuki Hosokawa, Mizuhiko Ichiki, Kiyotomo Ikegami, Takeshi TInoue, Kaiki Ishidoshiro, Koji Ishihara, Hideki Ishikawa, Takehiko Ishizaki, Hideharu Ito, Hiroyuki Itoh, Yousuke Kawashima, Nobuki Kawazoe, Fumiko Naoko, Kishimoto Kiuchi, Kenta Kobayashi, Shiho Kohri, Kazunori Koizumi, Hiroyuki Kojima, Yasufumi Kokeyama, Keiko Kokuyama, Wataru Kotake, Kei Kozai, Yoshihide Kudoh, Hideaki Kunimori, Hiroo Kuninaka, Hitoshi Kuroda, Kazuaki Maeda, Kei-Ichi Matsuhara, Hideo Mino, Yasushi Miyakawa, Osamu Miyoki, Shinji YMorimoto, Mutsuko Morioka, Tomoko Morisawa, Toshiyuki Mukohyama, Shinji Nagano, Shigeo Naito, Isao Nakamura, Kouji Nakano, Hiroyuki Nakao, Kenichi Nakasuka, Shinichi Nakayama, Yoshinori Nishida, Erina Nishiyama, Kazutaka Nishizawa, Atsushi Niwa, Yoshito Noumi, Taiga Obuchi, Yoshiyuki Ohashi, Masatake Ohishi, Naoko Ohkawa, Masashi Okada, Norio Onozato, Kouji Oohara, Kenichi Sago, Norichika Saijo, Motoyuki Sakagami, Masaaki Sakata, Shihori Sasaki, Misao Sato, Takashi Shibata, Masaru Shinkai, Hisaaki Somiya, Kentaro Sotani, Hajime Sugiyama, Naoshi Suwa, Yudai Suzuki, Rieko Tagoshi, Hideyuki Takahashi, Fuminobu Takahashi, Kakeru Takahashi, Keitaro Takahashi, Ryutaro Takahashi, Ryuichi Takahashi, Tadayuki Takahashi, Hirotaka Akiteru, Takamori Takano, Tadashi Taniguchi, Keisuke Taruya, Atsushi Tashiro, Hiroyuki Torii, Yasuo Toyoshima, Morio Tsujika Faculty of Engineering Hosei University kajinocho Tokyo 184-8584 Japan National Astronomical Observatory Japan Tokyo 181-8588 Osawa 2-21-1 Japan Department of Physics University of Tokyo Tokyo 113-0033 Japan Department of Physics Kyoto University Kyoto 606-8502 Japan Earthquake Research Institute University of Tokyo Tokyo 113-0032 Japan Institute of Space and Astronautical Science Japan Aerospace Exploration Agency (JAXA) Kanagawa 229-8510 Japan Institute of Particle and Nuclear Studies High Energy Accelerator Research Organization (KEK) Ibaraki 305-0801 Japan Department of Physics Osaka City University Osaka 558-8585 Japan Department of Advanced Materials Science University of Tokyo Chiba 277-8561 Japan Institute for Laser Science University of Electro-Communications Tokyo 182-8585 Japan NASA Goddard Space Flight Center CODE 663 Greenbelt MD 20771 8800 Greenbelt Rd. United States Yukawa Institute for Theoretical Physics Kyoto University Kyoto 606-8502 Japan Department of Earth and Environmental Sciences Hirosaki University Aomori 036-8560 Japan California Institute of Technology 1200 E. California Blvd. MC 18-34 Pasadena CA 91125 United States Nihon University Setagaya Tokyo 156-8550 Japan Ochanomizu University 2-1-1 Tokyo 112-0012 Japan Space Educations Center Japan Aerospace Exploration Agency (JAXA) Kanagawa 229-8510 Japan Institute for Cosmic Ray Research University of Tokyo Chiba 277-8582 Japan National Institute of Advanced Industrial Science and Technology (AIST) Ibaraki 305-8563 Japan Department of Aeronautics and Astronautics Tokai University Kanagawa 259-1292 Japan National Institute of Information and Communications Technology (NICT) Tokyo 184-8795 Japan School of Science and Engineering Kinki University Osaka 577-8502 Japan Max-Planck-Institute for Gravitational Physics (Albert-Einstein-Institute) D-30167 Hannover Callinstr. 38 Germany Astrophysics Research Institute Liverpool John Moores University Twelve Quays House Birkenhe

DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is the planned Japanese space gravitational wave antenna, aiming to detect gravitational waves from astrophysically and cosmologically significant sources mainly between 0.1 Hz and 10 Hz and thus to open a new window for gravitational wave astronomy and for the universe. DECIGO will consist of three drag-free spacecraft, 1000 km apart from each other, whose relative displacements are measured by a differential Fabry-Perot interferometer. We plan to launch DECIGO in middle of 2020s, after sequence of two precursor satellite missions, DECIGO pathfinder and Pre-DECIGO, for technology demonstration required to realize DECIGO and hopefully for detection of gravitational waves from our galaxy or nearby galaxies. © 2009 IOP Publishing Ltd.

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Calculation of core loss using the Jiles-Atherton model incorporated into magnetic field analysis

引用

Archives of Electrical engineering 2007年第219-1期56卷 57-69页

作者： Jagiela, Mariusz Institute of Electromechanical Systems and Industrial Electronics Faculty of Electrical Engineering Automatic Control and Computer Science Opole University of Technology

The paper deals with the calculation of hysteresis power loss in cores of electromechanical converters. The analysis was carried out using the Jiles-Atherton model of ferromagnetic hysteresis incorporated into two-dimensional time-stepping finite element model. A vector hysteresis model was constructed by the vectorisation of a scalar model. The total power loss due to hysteresis was split into two component, one originating from the purely alternating magnetic field, and the second being a consequence of the local predomination of vector nature of magnetic field distribution. Two computational examples are presented showing the general applicability of the algorithm for determination of power loss distribution.

关键词： Electric losses

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Novel straight and circular road driving control of electric power assisted wheelchair based on fuzzy algorithm

引用

IEEJ Transactions on Industry Applications 2007年第7期127卷 723-730+5页

作者： Seki, Hirokazu Tadakuma, Susumu Department of Electrical Electronics and Computer Engineering Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino 275-0016 Japan Chiba Institute of Technology Japan

This paper describes a novel straight and circular road driving control scheme for electric power assisted wheelchairs. "Electric power assisted wheelchair" which assists the driving force by electric motors is expected to be widely used as a mobility support system for elderly people and disabled people, however, the performance of the straight and circular road driving must be further improved because the two wheels drive independently. This paper proposes a novel driving control scheme based on fuzzy algorithm to realize the stable and reliable driving on straight and circular roads. The suitable assisted torque of the right and left wheels is determined by fuzzy algorithm based on the posture angular velocity of the wheelchair and the human input torque proportion of the right and left wheels. Some experiments on the practical roads show the effectiveness of the proposed control system.

关键词： Wheelchairs

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New fully automatic fast registration method for 2D computed tomography images

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Information technology Journal 2007年第5期6卷 761-765页

作者： Ravichandran, C.G. Ravindran, G. Center for Medical Electronics Department of Electronics and Communication Engineering Anna University 60025 India Faculty of Information and Communication Engineering Anna University Chennai 600025 India Department of Computer Sciences and Engineering Valalar College of Engineering and Technology Erode India

This research proposes and implements a new fully automatic fast registration method for 2D Computed Tomography images. In this proposed method, the images are smoothened and edges are detected using Laplacian of Gaussian filter. Fast Fourier transform is applied to the source and reference images to split the phase and magnitude. The registered image is reconstructed using Inverse Fourier Transform. The proposed method is found to have salient features namely, less human interaction, significant reduction in computational speed and provides very precise image registration with sub-pixel accuracy when compared with the traditional approaches. © 2007 Asian Network for Scientific Information.

关键词： Image registration

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The CBM Collaboration

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Nuclear Physics A 2009年第1期830卷 942c-944c页

作者： N. Abel J. Adamczewski D. Adamova M.M. Aggarwal N. Ahmad Z. Ahmad A. Akindinov P. Akishin E. Akishina T. Akishina M. Al-Turany M. Alyushin S. Amar-Youcef V. Ammosov M. Anđelić C. Andrei A. Andronic Yu. Anisimov K. Antipin H. Appelshäuser V. Zrjuev Heidelberg Germany Physikalisches Institut Universität Heidelberg Dresden Germany Institut für Strahlenphysik Forschungszentrum Dresden-Rossendorf (FZD) Aligarh India Department of Physics Aligarh Muslim University Hefei China Department of Modern Physics University of Science & Technology of China (USTC) Seoul Korea Department of Physics Korea University Coimbra Portugal Laboratório de Instrumentação e Física Experimental de Partículas (LIP) Beijing China Department of Engineering Physics Tsinghua University Bhubaneswar India Institute of Physics Kraków Poland Faculty of Electrical Engineering Automatics Computer Science and Electronics Department of Measurement and Instrumentation AGH University of Science and Technology Moscow Russia Skobeltsyn Institute of Nuclear Phyiscs Lomonosov Moscow State University (SINP-MSU) Frankfurt Germany Institut für Kernphysik Universität Frankfurt Dubna Russia Veksler and Baldin Laboratory of High Energies Joint Institute for Nuclear Research (JINR-VBLHE) Münster Germany Institut für Kernphysik Westfälische Wilhelms Universität Münster Gatchina Russia Petersburg Nuclear Physics Institute (PNPI) Pusan Korea Pusan National University (PNU) Srinagar India Department of Physics University of Kashmir Bucharest Romania Atomic and Nuclear Physics Department University of Bucharest Dubna Russia Laboratory of Particle Physics Joint Institute for Nuclear Research (JINR-LPP)

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