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IEEE-EMBS International Conference on biomedical and Health Informatics, BHI 2012. In Conj. with the 8th Int. Symp.on Medical Devices and Biosensors and the 7th Int. Symp. on biomedical and Health engineering

作者： Wei, Q. Zhu, C.W. Seong, K.W. Lee, Z.H. Jeon, H.C. Song, B.S. Cho, J.H. Graduate School of Electrical Enginerring and Computer Science Kyungpook National University Daegu 702701 Korea Republic of Newtork Optimization Centre China Mobile Group Shanghai Co. Ltd. Shanghai 200060 China Institute of Biomedical Engineering Research Kyungpook National University Daegu 702701 Korea Republic of Department of Biomedical Engineering Kyungpook National Univ. Hospital Daegu 702701 Korea Republic of Medical Information and Contents Institute MDware Daegu Korea Republic of Department of Rehabilitation Engineering Daegu University Daegu 712714 Korea Republic of

ISBN: (纸本)9781457721779

This study proposes a new wireless skin moisture detection system using a capacitive sensor rather than traditional optical methods. Moisture is the most important factor for maintaining healthy skin. The moisture in the skin can be detected by a capacitive sensor. The aim of this study was to design a wireless capacitive senor skin moisture detection system. The capacitive sensor was pressed onto the skin of a rat to measure the moisture, and the data was transmitted with the RF method. The transmitter and receiver were individually controlled by a microprocessor. The results of the preliminary experiment show that using a capacitive sensor to detect skin moisture was possible. In addition, the wireless detection system showed a good performance in an in-vivo experiment. © 2012 IEEE.

关键词： Capacitive sensors

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Prot-Class: A bioinformatics tool for protein classification based on amino acid signatures

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Natural Science 2012年第12期4卷 1161-1164页

作者： Jens Lichtenberg Brian D. Keppler Thomas Conley Dazhang Gu Paul Burns Lonnie R. Welch Allan M. Showalter Biomedical Engineering Program Ohio University Athens USA Department of Environmental and Plant Biology College of Arts and Sciences Ohio University Athens USA Molecular and Cellular Biology Program Ohio University Athens USA School of Electrical Engineering and Computer Science Russ College of Engineering Ohio University Athens USA

Knowledge about characteristics shared across known members of a protein family enables their identification within the complete set of proteins in an organism. Shared features are usually expressed through motifs, which can incorporate specific patterns and even amino acid (AA) biases. Based on a set of classification patterns and biases it can be determined which additional proteins may belong to a specific family and share its functionality. A bioinformatics tool (Prot-Class) was implemented to examine protein sequences and characterize them based upon user-defined AA composition percentages and user defined AA patterns. In addition the tool allows for the identification of repeated AA patterns, biased AA compositions within windows of user-defined length, and the characteristics of putative signal peptides and glycosylphosphatidylinositol (GPI) lipid anchors. ProtClass is general purpose and can be applied to analyze protein sequences from any organism. The Prot-Class source code is available through the GNU General Public License v3 and can be accessed via the Google Code Repository: http://***/p/prot-class/.

关键词： Bioinformatics Protein Classification Arabidopsis

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Phase transition behavior in microcantilevers coated with M 1-phase VO2 and M2-phase VO2:Cr thin films

Phase transition behavior in microcantilevers coated with M ...

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作者： Rúa, Armando Cabrera, Rafmag Coy, Horacio Merced, Emmanuelle Sepúlveda, Nelson Fernández, Félix E. Department of Physics University of Puerto Rico Mayagüez 00681-9000 Puerto Rico Doctoral Program in Physics Graduate Center City University of New York New York 10016 United States Applied Materials Group Electrical and Computer Engineering Department Michigan State University E. Lansing MI 48824 United States

Silicon microcantilevers were coated by pulsed laser deposition with vanadium dioxide (VO2) (monoclinic M1 phase) and V 1-xCrxO2 with x near 0.024 (monoclinic M 2 phase), and their mechanical characteristics were studied as a function of temperature through the films' insulator-to-metal transition (IMT). The undoped VO2 films grew with (011)M1 planes parallel to the substrate, while Cr-doped VO2 films grew oriented with (201)M2 and (2 01)M2 planes parallel to the substrate. In both cases, the films transformed reversibly through the IMT to the tetragonal (rutile, R) phase, with film (110)R planes oriented parallel to the substrate. The fundamental resonant frequencies of the cantilevers were measured as the temperature was cycled from ambient temperature, through the IMT, and up to 100 °C. Very high resonant frequency changes were observed through the transition for both types of samples, with increases during heating of over 11 and over 15 for the cantilevers coated with pure and Cr-doped VO2, respectively. From the resonant frequencies measured at room temperature for the bare and coated cantilevers in each case, the effective Young's moduli of the films were determined. The values obtained, assuming bulk densities for the films, are 156 ± 7.5 GPa for VO2 (M1 phase) and 102 ± 3 GPa for Cr-doped VO2 (M2 phase). Strong curvature changes during the transition to the R phase were also observed for cantilevers coated with both types of films, but these were significantly higher in the case for the Cr-doped film. Curvature changes for temperature ranges outside the IMT region were small and attributed to differential thermal expansion between film and silicon substrate. From measured cantilever tip displacements in this post-transition range-for the undoped VO 2-coated microcantilevers-a rough estimate of 110 GPa was obtained for the effective Young's modulus for R-phase VO2. The substantially higher changes in resonant frequency and curvature for V1-xCr xO2-coated cant

关键词： Thin films

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THE METHOD OF MASTICATORY MOVEMENT NOISE REDUCTION USING THE DUAL CHANNEL IMPLANTABLE MICROPHONE

THE METHOD OF MASTICATORY MOVEMENT NOISE REDUCTION USING THE...

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IET International Conference on Information Science and Control engineering

作者： S. T. Woo D. W. Kim S. B. Lee J. H. Park K. W. Seong J. H. Lee J. H. Cho Graduate School of Electrical Engineering and Computer Science Kyungpook National University School of Electricity New & Renewable Energy Yeungjin College Department of Biomedical Engineering Kyungpook National University Hospital School of electronics Engineering College of IT Engineering Kyungpook National University

ISBN: (纸本)9781629939254

The input part of fully implantable hearing devices (FIHDs) was using the implantable microphone that was implanted under the skin of the temporal bone. So, implantable microphone's characteristics can be affected by the masticatory movement and moving artifacts. In this paper, the 2-channel implantable microphone was designed for masticatory movement noise reduction. For in vivo experiment, the fabricated microphone was implanted in the rabbit. And then, the 1 kHz pure-tone sound by a speaker was applied to the rabbit, and the feeds were given simultaneously to the rabbit. The measured signal was processed using the adaptive filter with least mean square (LMS) algorithm for noise reduction. To confirm performance of proposed method, the correlation coefficient and signal to noise ratio (SNR) before and after the signal processing were calculated.

关键词： Implantable microphone Adaptive filter Fully implantable hearing devices Masticatory movement In vivo experiment

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Device Interoperability and Authentication for Telemedical Appliance based on the ISO/IEEE 11073 Personal Health Device (PHD) Standards

Device Interoperability and Authentication for Telemedical A...

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

作者： Luther Paul R. Caranguian Susan Pancho-Festin Luis G. Sison a graduate student in the MS Electrical Engineering (Instrumentation and Control) program of University of the Philippines Diliman. Festin is with the Department of Computer Science University of the Philippines Diliman. with the Electrical and Electronics Engineering Institute University of the Philippines Diliman.

ISBN: (纸本)9781424441198

In this study, we focused on the interoperability and authentication of medical devices in the context of telemedical systems. A recent standard called the ISO/IEEE 11073 Personal Health Device (X73-PHD) Standards addresses the device interoperability problem by defining common protocols for agent (medical device) and manager (appliance) interface. The X73-PHD standard however has not addressed security and authentication of medical devices which is important in establishing integrity of a telemedical system. We have designed and implemented a security policy within the X73-PHD standards. The policy will enable device authentication using Asymmetric-Key Cryptography and the RSA algorithm as the digital signature scheme. We used two approaches for performing the digital signatures: direct software implementation and use of embedded security modules (ESM). The two approaches were evaluated and compared in terms of execution time and memory requirement. For the standard 2048-bit RSA, ESM calculates digital signatures only 12% of the total time for the direct implementation. Moreover, analysis shows that ESM offers more security advantage such as secure storage of keys compared to using direct implementation. Interoperability with other systems was verified by testing the system with LNI Healthlink, a manager software that implements the X73-PHD standard. Lastly, security analysis was done and the system's response to common attacks on authentication systems was analyzed and several measures were implemented to protect the system against them.

关键词： Interoperability Telemedical Authentication

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All-Optical Transducer for Ultrasound and Photoacoustic Imaging by Dichroic Filtering

All-Optical Transducer for Ultrasound and Photoacoustic Imag...

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IEEE International Ultrasonics Symposium

作者： Bao-Yu Hsieh Sung-Liang Chen Tao Ling L. Jay Guo Pai-Chi Li Graduate Institute of Biomedical Electronics and Bioinformatics National Taiwan University Taipei Taiwan Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor Michigan USA

ISBN: (纸本)9781467345613

The ultrasound (US) and photoacoustic (PA) multi-modality imaging has the advantages of combining good acoustic resolution with high optical contrast. An all-optical transducer for both imaging modalities can simplify the entire system design and miniaturize the imaging scanhead for intravascular imaging applications. In this study, we propose and demonstrate an all-optical US/PA transducer using a thin plate for optoacoustic generation for US imaging, a microring resonator for acoustic detection, and a dichroic filter to switch between the two imaging modes. In other words, a dichroic (i.e., a color filter) is used to selectively pass light depending on the imaging mode. When under US imaging, the light hits the color filter to generate US for US imaging. When under PA imaging, the light pass through the color filter and directly hits the image object. The experimental image results indicated that the US and PA imaging modes can be selected by switching the laser wavelengths using a dichroic filter. The imaging resolution and contrast were improved by applying the synthetic aperture focusing technique (SAFT). The axial and lateral resolutions of the implemented imaging system were 125 μm and 2.52°, respectively, while application of the SAFT enhanced the contrast by about 5dB.

关键词： Photoacoustic imaging All-optical design Dichroic filter COLOR FILTER dichroic filters Photoacoustic imaging Ultrasonic Waves Imaging United States Light image resolution PHOTOACOUSTIC Transducers Acoustic detection Nylons THIN PLATES

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Membrane design of vibration transducer to drive round window to increase vibration displacement

Membrane design of vibration transducer to drive round windo...

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IEEE EMBS International Conference on Information Technology Applications in Biomedicine (ITAB)

作者： Jang Woo Lee Hyung Gyu Lim Eui Sung Jung Ki Woong Seong Jyung Hyun Lee Jee Hyun Kim Myoung Nam Kim Jin Ho Cho Graduate School of Electrical Engineering and Computer Science Kyungpook National University Daegu South Korea Institute of Biomedical Engineering Research Kyungpook National University Daegu South Korea Department of Biomedical Engineering Kyungpook National University Daegu South Korea School of Electronics Engineering College of IT Engineering Kyungpook National University South Korea Department of Biomedical Engineering School of Medicine Kyungpook National University Daegu South Korea

Many kinds of hearing aids have been developed to overcome hearing loss. Each hearing aid has their own method to improve hearing threshold level of the patient. In case of vibration transducer to drive round window, a part of implantable hearing aid, uses the vibration displacement to compensate the hearing level. However, the vibration displacement is limited by membrane size made of metal, when it has been fixed dimensions. In this paper, several form of vibration transducer membrane to drive round window to increase vibration displacement has been proposed. It is calculated using finite element analysis. It is confirmed the vibration displacement can be higher in limited size.

关键词： Argon Elasticity

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Wound healing effect by 633 nm wavelength using LED irradiator 1

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4th International Conference on Information Technology Convergence and Services, ITCS 2012 and 9th FTRA International Conference on Secure and Trust Computing, Data Management, and Applications, STA 2012

作者： Lee, Yang-Sun Kim, Tae-Gon Cheon, Min-Woo Division of Computer Eng. Mokwon University 88 Doan-dong Seo-gu Daejeon 302-729 Korea Republic of Department of Electrical and Electronic Engineering Dongshin University Graduate School 252 Daeho-dong Naju Jeonnam 520-714 Korea Republic of Department of Biomedical Science Dongshin University 252 Daeho-dong Naju Jeonnam 520-714 Korea Republic of

ISBN: (数字)9789400750838

ISBN: (纸本)9789400750821

This study verified the performance and effectiveness of 633nm LED irradiator that was designed to emit similar wavelengths to that of a laser and thus could be used instead of a low level laser in experiments on cells and animals. In order to examine the effect of the 633nm LED irradiator on wounds, a round slice of wound 1 cm in diameter was cut on the back of the laboratory animal. Laboratory animals treated with 633nm LED irradiation (p

关键词： Cell proliferation

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Performance evaluation of D3LS and NCLS smart antenna in mobile communications

Performance evaluation of D3LS and NCLS smart antenna in mob...

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International Symposium on Antennas and Propagation (ISAP)

作者： Akkarat Boonpoonga Phichet Nilsuwan Jukkrit Tagapanij Phaophak Sirisuk Department of Electrical and Computer Engineering Faculty of Engineering King Mongkuts University of Technology North Bangkok Bangkok Thailand The Electrical Engineering Graduate Program Faculty of Engineering Mahanakorn University of Technology Bangkok Thailand Department of Telecommunication Engineering Mahanakorn University of Technology Bangkok Thailand International College King Mongkut's Institute of Technology Ladkrabang Bangkok Thailand

In this paper, the performance evaluation of a smart antenna using D3LS and NCLS algorithms has been presented. The simulations are conducted with the scenario of mobile communication systems. They have confirmed the feasibility of the D3LS and NCLS smart antenna applied to mobile communications. It should be note that the smart antenna employed in this paperis purely blind and single snapshot operation. The simulation results show good performance of the smart antenna.

关键词： Direction of arrival estimation Interference Mobile communication Mobile antennas Adaptive arrays Estimation

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Smart antenna using a combination of D3LS and NCLS algorithms

Smart antenna using a combination of D3LS and NCLS algorithm...

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International Conference on electrical engineering/Electronics, computer, Telecommunications and Information Technology, ECTI-CON

作者： Phichet Nilsuwan Akkarat Boonpoonga Jukkrit Tagapanij Phaophak Sirisuk The Electrical Engineering Graduate Program Faculty of Engineering Mahanakorn University of Technology Bangkok Thailand Department of Electrical and Computer Engineering Faculty of Engineering King Mongkuts University of Technology North Bangkok Bangkok Thailand Department of Telecommunication Engineering Mahanakorn University of Technology Bangkok Thailand International College King Mongkut's Institute of Technology Ladkmbang Bangkok Thailand

ISBN: (纸本)9781467320269

This paper presents a smart antenna system using a combination of nonconventional least square (NCLS) optimization and direct data domain least square (D3LS) for direction-of-arrival (DOA) estimation and beamforming, respectively. In the proposed system, NCLS optimization is utilized to estimate DOA of incoming signal first. The estimated DOA is then assisted for initial processing of D3LS in beamforming. The performance in term of estimated signal amplitude and estimated DOA of the proposed system is evaluated via simulations.

关键词： Direction of arrival estimation Optimization Interference Adaptive arrays Estimation Arrays

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