• Title/Summary/Keyword: walking characteristic

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A Measurement of Passengers' Walking Speed on Passenger Ship(II) (연안여객선 일반 승선자의 보행속도 실측(II) -비숙련 일반인을 대상으로 한 실험-)

  • Hwang, Kwang-Il;Son, Byeung-Hun;Na, Wook-Jung;Ahn, Chang-Hwan;Hong, Won-Hwa;Lee, Soo-Ho;Koo, Jae-Hyeok;Jeon, Byeong-Cheong
    • Proceedings of the Korean Society of Marine Engineers Conference
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    • 2012.06a
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    • pp.206-207
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    • 2012
  • We need to develop intelligent smart card made unskilled general public's to the shelter on Passenger Ship. prior to development, we have to study passenger of characteristic. so we researched about domestic unskilled general public's of walking speed in refuge situation.

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Construction of a Gait Analysis System for Evaluating Gait Abnormalities (보행 비정상성의 평가를 위한 보행분석 시스템의 구현)

  • Chung, Min-Keun;Kim, Sang-Ho;Kim, Tae-Bok
    • Journal of Korean Institute of Industrial Engineers
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    • v.17 no.2
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    • pp.39-50
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    • 1991
  • The movement of human beings - walking, running, jumping and climbing, etc. - have long been of scientific interest. In particular, the science of human walking is called gait analysis. Various instruments have been developed to assist in the study of human gait. Recently gait analysis techniques are used in medical research to investigate the abnormalities of pathological gait. In this study, we constructed a comprehensive gait analysis system consisting of a walkway, a force platform, foot-switches and an ExpertVision motion analysis system. Time-distance gait parameters and vector diagrams can be analyzed by a special application program called Force Analysis System(FOANAS). Using quantitative discrimination of this system, the gait characteristic parameters of normal and pathological gait is facilitated.

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Prediction of Energy Expenditure by Using a Tri-axial Accelerometer (단일 3축 가속도센서를 사용한 보행 시 대사에너지 예측)

  • Lee, Hee-Young;Kim, Seung-Hyeon;Lee, Dong-Yeop;Park, Sun-Woo;Kim, Young-Ho
    • Korean Journal of Applied Biomechanics
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    • v.21 no.2
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    • pp.253-258
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    • 2011
  • The purpose of this study was to compare metabolic energy expenditure with the computed kinetic energy for different speeds of walking and running over the treadmill and to find the relevance for individual and group equation by performing a statistical analysis, Bland-Altman plot. Seven male subjects participated, and they were required to walk and run on the treadmill with the gas analyzer and triaxial accelerometer. Walking speeds were 3.0, 4.0, 5.0 and 6.0 km/h and running speeds were 7.0, 8.0 and 9.0 km/h respectively. Kinetic energy was calculated by the integration of acceleration data and compared with the metabolic energy measured by a gas analyzer. Correlation coefficients showed relatively good between the measured metabolic energy and the calculated kinetic energy. In addition, a dramatic increase in kinetic energy was also observed at the transition speed of walking and running, and two standard deviations in Bland-Altman plot, derived from the difference between measured and predicted values, were 1.14, 2.53, 2.93, 1.80, 2.80, 0.60 and 2.48 respectively. It was showed that there is no difference for methods of how to predict the kinetic energy expenditure for individual and group even though people had each different physical characteristic.

Prediction of Transient Slab Heating Characteristics in a Walking Beam Type of Reheating Furnace

  • Han Sang-Heon;Baek Seung-Wook
    • 한국전산유체공학회:학술대회논문집
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    • 2006.05a
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    • pp.405-407
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    • 2006
  • A full-scale simulation of steel mill reheating furnace was performed by using parallel computing technology. Turbulent flow as well as chemical reaction is considered and solved in a coupled manner while radiation is also calculated. The movement of slab is taken into account so that a more precise observation of its heating characteristics becomes possible through this numerical analysis.

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A study on extract in gait pattern characteristic using a tilt sensor and EMG (기울기 센서와 근전도를 이용한 보행패턴 특징 추출에 관한 연구)

  • Moon, D.J.;Kim, J.Y.;Jung, H.D.;Noh, S.C.;Choi, H.H.
    • Journal of rehabilitation welfare engineering & assistive technology
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    • v.7 no.2
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    • pp.75-84
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    • 2013
  • In this study, the patterns and characteristics according to gait cycle were analyzed using to EMG signals during walking, and analyzed in the time domain and frequency domain. The experiments was performed divide to level-ground walking and stair walking, and gait cycle was analysis by stance and swing. In the sagittal plane by using the tilt sensor measures the angle of the lower leg, and EMG was measured from the quadriceps and biceps femoris. The tilt of the lower leg was showed the biggest tilt at HS, and showed lowest value at TO. All in walking according to the gait cycle IEMG showed a specific pattern, and is expected useful to determine the gait cycle and kind. In the frequency domain analysis was using STFT on able to frequency analysis according to time, and using the tilt sensor was identify gait cycle. We analyzed also spectrum of the results of the STFT in all gait types, and recognized that stance had broad bandwidth than that of swing. Through this study, it was confirmed the possibility of judgment and analysis of the gait cycle using EMG and the tilt in the sagittal plane of the lower leg. When used it, can improve the quality of life of amputation patients

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Vibration evaluation of building floors using Preflex composite beams (프리플렉스 합성보를 적용한 기존 건물 바닥구조의 진동평가)

  • 경재환;임지훈;김희철
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2001.05a
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    • pp.194-201
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    • 2001
  • The dynamic characteristic of the building using preflex composite beams is a low natural frequency due to long span. Therefore, both vibrational acceleration and the characteristic of natural frequency damage to people using the building, This study estimates a vibrational acceleration based on walking and natural frequency in five kinds of building. Recently, using methods of evaluating a serviceability are based on JIA, AISC, Eurocode, CSA, DIN and ISO. ed. The result of this study is content with foreign regulations and serviceability. However, considering of these results, the method of evaluating serviceability should be developed in the future.

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Focused on Open space activation in a pedestrian precinct (도시 특성화를 위한 가로디자인에 관한 연구 - 보행공간의 오픈스페이스 활성화를 중심으로 -)

  • 이재원
    • Archives of design research
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    • v.16 no.2
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    • pp.311-322
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    • 2003
  • In this research, a way to design a more convenient road for walking by creating more pedestrian space for streets located in busy areas due to many people crowded together was looked into. A symbol or characteristic was given to the street representing the image or regional culture of the area, and effort was given to create convenient yet characteristic street landscape by turning an environmentally sound, open area into pedestrian space. The basic concept of pedestrian space design was taken as the correlations between physical and psychological factors that appear on the environmental aspect of landscape. Areas for which it was difficult to come up with, a method to create a unique open space for pedestrians was looked into by analyzing with other known cases where the pedestrian area landscape was compared with that of the area in question.

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Multi-view Human Recognition based on Face and Gait Features Detection

  • Nguyen, Anh Viet;Yu, He Xiao;Shin, Jae-Ho;Park, Sang-Yun;Lee, Eung-Joo
    • Journal of Korea Multimedia Society
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    • v.11 no.12
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    • pp.1676-1687
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    • 2008
  • In this paper, we proposed a new multi-view human recognition method based on face and gait features detection algorithm. For getting the position of moving object, we used the different of two consecutive frames. And then, base on the extracted object, the first important characteristic, walking direction, will be determined by using the contour of head and shoulder region. If this individual appears in camera with frontal direction, we will use the face features for recognition. The face detection technique is based on the combination of skin color and Haar-like feature whereas eigen-images and PCA are used in the recognition stage. In the other case, if the walking direction is frontal view, gait features will be used. To evaluate the effect of this proposed and compare with another method, we also present some simulation results which are performed in indoor and outdoor environment. Experimental result shows that the proposed algorithm has better recognition efficiency than the conventional sing]e view recognition method.

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A system of multiple controllers for attenuating the dynamic response of multimode floor structures to human walking

  • Battista, Ronaldo C.;Varela, Wendell D.
    • Smart Structures and Systems
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    • v.23 no.5
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    • pp.467-478
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    • 2019
  • Composite floor structures formed by continuous slab panels may be susceptible to excessive vibrations, even when properly designed in terms of ultimate limit state criteria. This is due to the inherent vibration characteristics of continuous floor slabs composed by precast orthotropic reinforced concrete panels supported by steel beams. These floor structures display close spaced multimode vibration frequencies and this dynamic characteristic results in a non-trivial vibration problem. Structural stiffening and/or insertion of struts between floors are the usual tentative solution applied to existing vibrating floor structures. Such structural alterations are in general expensive and unsuitable. In this paper, this vibration problem is analyzed on the basis of results obtained from experimental measurements in typical composite floors and their theoretical counterpart obtained with computational modeling simulations. A passive control system composed by multiple synchronized dynamic attenuators (MSDA) was designed and installed in these floor structures and its efficiency was evaluated both experimentally and through numerical simulations. The results obtained from experimental tests of the continuous slab panels under human walking dynamic action proved the effectiveness of this control system in reducing vibrations amplitudes.