• Title/Summary/Keyword: Characteristic Method

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Silhouette-based Gait Recognition for Variable Viewpoint (시점 변화에 강인한 실루엣 기반 게이트 인식)

  • 나진영;강성숙;정승도;최병욱
    • Proceedings of the IEEK Conference
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    • 2003.07e
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    • pp.1883-1886
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    • 2003
  • Gait is defined as "a manor of walking". It can used as a biometric measure to recognize known persons. Gait is an idiosyncratic feature determined by an individual's weight, stride length, and posture combined with characteristic motion. but its feature extracted from images varies with the viewpoint. In this paper, we propose a gait recognition method using a planer homography, which is robust for viewpoint variation. We represent an individual as key-silhouettes. And we endow key-silhouettes with weight calculated using the characteristic of PCA. Experimental result shows that proposed method is robust for viewpoint variation as images synthesised same viewpoint.

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Quality Characteristic Choice and Resources Allocation under Consideration of Safety (안전성을 고려한 품질특성 선정 및 자원배분)

  • Kim Jong-Gurl;Jung Jin-Ho
    • Proceedings of the Safety Management and Science Conference
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    • 2004.11a
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    • pp.245-252
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    • 2004
  • This paper presents a method for choosing quality characteristics to consider safety by integrating QFD based on quality requirements and AHP based on safety requirements, also shows resources allocation method to maximize customer satisfaction by ranking the index of technical importance to cost.

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Characteristic Analysis of a Slotless PM Linear Motor Using Analytical Method (해석적 방법을 이용한 슬롯리스형 영구자석 선형 전동기의 특성 해석)

  • Ahn, Ho-Jin;Kang, Gyu-Hong;Hong, Jung-Pyo;Kim, Gyu-Tak
    • Proceedings of the KIEE Conference
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    • 2001.10a
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    • pp.116-118
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    • 2001
  • This paper deals with characteristic analysis of a slotless PM linear motor using analytical method. In order to calculate voltage equations, back-EMF waveform and winding inductance are caculated by PM's magnetic field and winding's magnetic field respectively.

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On the consideration of the masses of helical springs in damped combined systems consisting of two continua

  • Gurgoze, M.;Zeren, S.;Bicak, M.M.A.
    • Structural Engineering and Mechanics
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    • v.28 no.2
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    • pp.167-188
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    • 2008
  • This study is concerned with the establishment of the characteristic equation of a combined system consisting of a cantilever beam with a tip mass and an in-span visco-elastic helical spring-mass, considering the mass of the helical spring. After obtaining the "exact" characteristic equation of the combined system, by making use of a boundary value problem formulation, the characteristic equation is established via a transfer matrix method, as well. Further, the characteristic equation of a reduced system is obtained as a special case. Then, the characteristic equations are numerically solved for various combinations of the physical parameters. Further, comparison of the results with the massless spring case and the case in which the spring mass is partially considered, reveals the fact that neglecting or considering the mass of the spring partially can cause considerable errors for some combinations of the physical parameters of the system.

Operation Characteristic Analysis of Magnetic Actuator by configuration change (형상 변화에 따른 Magnetic Actuator의 동작 특성 해석)

  • Park, J.H.;Kim, J.K.;Joo, S.W.;Hahn, S.C.
    • Proceedings of the KIEE Conference
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    • 2002.11d
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    • pp.128-130
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    • 2002
  • This paper describes the operating characteristic analysis of magnetic actuator that is used in breaker using 3-D axisymmetry finite element method. To analyze the operating characteristic of magnetic actuator for configuration change is designed an A, B model and C. Also, For Transient analysis of Electromagnetic system is considered Non-linear characteristic for magnetizing of iron. The analysis results of A, B model and C for magnetic actuator compared with those characteristic respectively.

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A Study on the Evaluation of the Loss Factor and Young′s Modulus of Damping Materials on Temperature Condition (2층형 제진 강판을 이용한 오도 조건에 따른 제진재의 손실계수 및 탄성계수 측정)

  • Lee, Chang-Myung;Lee, Jun
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.11 no.9
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    • pp.391-397
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    • 2001
  • The characteristic values of damping materials are variant on frequency and temperature. We measure the characteristic values(loss factor, young\\\\`s modulus) of damping materials in vibration test. We can not measure characteristic values of damping materials by themselves. So, we proposed a method, sticking damping material to thin steel beam and measuring of characteristic values of damping material on frequency and temperature. We didn\\\\`t use constraining layer but we measured characteristic values on conditioning temperature.

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Optimum Design of a Geometrically Asymmetric Trapezoidal Fin Based on the Fixed Fin Base Height (고정된 핀 바닥 높이에 기준한 기하학적 비대칭 사다리꼴 핀의 최적 설계)

  • Kang, Hyung-Suk
    • Transactions of the Korean Society of Automotive Engineers
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    • v.16 no.6
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    • pp.81-87
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    • 2008
  • A geometrically asymmetric trapezoidal fin with variable fin base thickness and height is optimized based on the fixed fin base height using a one-dimensional analytic method. The temperature profile along the normalized X position in the fin is presented. For the fixed fin base height, the optimum heat loss, fin length and efficiency as a function of inside fluid convection characteristic number, fin base thickness and height, fin shape factor, convection characteristic numbers ratio and ambient convection characteristic number are represented. One of the results shows that the effect of fin base height and ambient convection characteristic number on the optimum values is remarkable.

Safety characteristics deployment of the unit working process (단위작업공정에 대한 안전특성 전개)

  • Kim, Soon-Jin;Yang, Hyun-Hoo;Lee, Kang-Bok;Kim, Geon-Ho;Kang, Kyung-Sik
    • Journal of the Korea Safety Management & Science
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    • v.9 no.6
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    • pp.1-7
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    • 2007
  • A study wish to present relation of safety characteristic deployment, which has the safety demand, safety characteristic, protection characteristic, safety regulation, safety education of unit work process. Safety characteristic deployment will be used in safety management education system design with a method of safety management system construction of unit work process.

Joint-characteristic Function of the First- and Second-order Polarization-mode-dispersion Vectors in Linearly Birefringent Optical Fibers

  • Lee, Jae-Seung
    • Journal of the Optical Society of Korea
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    • v.14 no.3
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    • pp.228-234
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    • 2010
  • This paper presents the joint characteristic function of the first- and second-order polarization-modedispersion (PMD) vectors in installed optical fibers that are almost linearly birefringent. The joint characteristic function is a Fourier transform of the joint probability density function of these PMD vectors. We regard the random fiber birefringence components as white Gaussian processes and use a Fokker-Planck method. In the limit of a large transmission distance, our joint characteristic function agrees with the previous joint characteristic function obtained for highly birefringent fibers. However, their differences can be noticeable for practical transmission distances.

Design of Electromagnetic Actuator with Three-Link Mechanism for Air Circuit Breaker (기중 차단기용 전자석 조작기 및 3절 링크 설계)

  • Kim, Rae-Eun;Kwak, Sang-Yeop;Jung, Hyun-Kyo
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.58 no.7
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    • pp.1321-1328
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    • 2009
  • In this paper, an electromagnetic force driving actuator (EMFA) and three-link mechanism are proposed as a driving mechanism and connection device for low voltage air circuit breaker (ACB). As the result of dynamic characteristic analysis, the actuator and link mechanism are designed from the simulation and manufactured. The magneitc field of the EMFA is analyzed using the finite element method (FEM). The dynamic characteristic analysis with calculation of the circuit equation and kinetical equation is performed by the time difference method (TDM). Also, the result of the analysis is verified through the experiment of the fabrication model. In this paper, the EMFA size is smaller than the actuator for high voltage circuit breaker. Thus, the dynamic characteristic is analyzed with end-winding inductance that is calculated by the same method which is applied on the circle type end-winding of motors. The designed model for 1600 ampere-frame ACB and the three-link mechanism for connecting contact part with actuating part are manufactured. It is confirmed that the three-link mechanism is possible for improving the circuit breaker efficiency and reducing the size of the EMFA. It is proved that the improved 2-D analysis is more accurate than established method.