• 한방재활의학과학회지
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• 제23권4호
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• pp.233-250
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• 2013

Objectives The purpose of this study was to investigate the characteristics of inpatients who were admitted to Korean medicine hospital due to traffic accident. Methods 1,162 traffic accident patients who were admitted to department of Korean Rehabilitation Medicine of Cheonan Korean Medicine Hospital, Dae-Jeon University from 1st, January, 2011 to 31th, December, 2012 were analyzed according to the medical charts. Results 1. The average treatment result was 3.22 and in most (71.52%) of the patients, symptoms were more than improved. 2. In distribution according to age and sex, people in their 30s numbered the most both in male (12.65%) and female (14.72%). The 1,162 inpatients comprised of 457 (39.33%) male and 705 (60.67%) female. 3. 541 (46.56%) patients admitted in 2011 and 621 (53.44%) patients admitted in 2012. 4. 695 (59.81%) patients visited Cheonan Korean Medicine Hospital within 0~2 days after their traffic accident, followed by 242 (20.83%) patients who visited within 3~5 days after their traffic accident. Patients who admitted earlier showed more improvement in symptoms. 5. The average admission days were 9.32 days. Most (57.66%) patients discharged within 1 week. 6. 825 (71.00%) patients were driving sedan at the time of accident, followed by 105 (9.04%) SUV owners and 71 (6.11%) pedestrians. 7. Rear-end collision accident numbered the most (45.61%), followed by lateral collision (24.35%) and frontal collision (14.72%). 8. Most frequently prescribed examination was X-ray (95.52%), followed by CT (8.69%) and MRI (3.01%). 9. Most frequently given diagnosis was sprain (1,126 (96.90%) patients), followed by concussion & abrasion (178 (15.32%) patients) and fracture (109 (9.38%) patients). 10. Most frequently given Korean medicine treatment was acupuncture (1,162 (100%) patients), followed by anti-inflammatory pharmacopuncture (652 (56.11%) patients) and moxibustion (462 (39.76%) patients). 11. Most frequently given Korean medicine physiotherapy was infra-red (1,161 (99.91%) patients), followed by cupping therapy (1,152 (99.14%) patients) and hotpack (1,137 (97.85%) patients). 12. Most frequently prescribed herb medicine was huishou-san (13.51%), followed by dangguixu-san (12.65%) and yaojiao-tang G (7.06%) Conclusions In this study, people in their 30s, females, within 0~2 days since the accident took the highest percentage from each category of patients who admitted to Korean Medicine Hospital due to traffic accident. Patients who admitted earlier showed more improvement in symptoms and also discharged earlier.

• 재활복지공학회논문지
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• 제9권2호
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• pp.89-103
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• 2015

본 연구는 척수손상 환자를 대상으로 병원기반 사회복귀 지원프로그램을 개발하고, 프로그램 시행 전 후를 비교 분석함으로써 프로그램의 효과성을 평가하고자 하였다. 재활병원에 입원해 있는 25명의 척수손상 환자를 대상으로 2~3개월 동안 일주일에 2번 평균 6.1개의 프로그램을 실시하였다. 프로그램 시행 전, 후 COPM, HADS, AD-R, WHOQOL-BREF를 통해 작업 수행도 및 만족도, 불안과 우울, 장애수용, 삶의 질을 비교하였으며, 퇴원 시 CIQ로 지역사회통합 수준과 퇴원 후의 사회복귀여부를 측정하였다. 자료분석은 기술통계와 대응표본 t검정(paired t-test)을 실시하였다. 연구결과 병원기반 사회복귀 지원프로그램 실시 후 작업 수행도 및 만족도, 장애수용, 삶의 질에 향상을 보였다(p<0.05). 또한 퇴원 후 25명의 척수손상 환자 중에서 10명이 가정, 학업, 직업으로 복귀하였다. 이를 통해 병원기반 사회복귀 지원프로그램이 척수손상 환자들이 퇴원 후 그들이 속한 지역사회로 돌아가는데 효과적임을 알 수 있었다. 척수손상 환자들이 가정과 사회로의 빠른 복귀를 위해서는 사회복귀를 위한 다양한 프로그램 개발과 더불어 체계적인 사회복귀 연계시스템이 이루어져야 할 것으로 사료된다.

• 대한전기학회논문지:시스템및제어부문D
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• 제51권3호
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• pp.112-121
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• 2002

This paper describes a new bike system for the postural balance rehabilitation training. Virtual environment and three dimensional graphic model is designed with CAD tools such as 3D Studio Max and World Up. For the real time bike simulation, the optimized WorldToolKit graphic library is embedded with the dynamic geometry generation method, multi-thread method, and portal generation method. In this experiment, 20 normal adults were tested to investigate the influencing factors of balancing posture. We evaluated the system by measuring the parameters such as path deviation, driving velocity, COP(center for pressure), and average weight shift. Also, we investigated the usefulness of visual feedback information by weight shift. The results showed that continuous visual feedback by weight shift was more effective than no visual feedback in the postural balance control It is concluded this system might be applied to clinical use as a new postural balance training system.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.432-441
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• 2007

Any track system needs major changes of its components during its life. The most economical solution is, if possible, to make all components reach their life limit during the major track rehabilitation operation. Usually, the rail does a role as the driving component for the objective: its life-time is equivalent to around 500 million tons of traffic on high speed lines. On the KTX line with 110 trains per day, this would correspond to around 16 years, which is probably too long for the elastic pads of a concrete slab track. The most economical solution should be to change them at an intermediate step of 8 years, without changing the rail, and then to change both the rail and elastic pad at 16 years intervals (some rail changes on the South East TGV line in France began 15 years after service opening at 260 km/h, but recent rails have better characteristics).

• 전기학회논문지
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• 제67권8호
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• pp.1089-1098
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• 2018

In this paper, we propose an autonomous feeding robot and its obstacle classification system using ultrasonic sensors to secure the driving safety of the robot and efficient feeding operation. The developed feeding robot is verified by operation experiments in a cattle shed. In the proposed classification algorithm, not only the maximum amplitude of the ultrasonic echo signal but also two gradients of the signal and the variation of amplitude are considered as the feature parameters for object classification. The experimental results show the efficiency of the proposed classification method based on the Support Vector Machine, which is able to classify objects or obstacles such as a human, a cow, a fence and a wall.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2016년도 제53차 동계학술대회논문집 24권1호
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• pp.147-148
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• 2016

The purpose of this paper is to investigate the diffusion process of mobile internet use in Korea and to explore the determinants driving MIU. A survey was conducted to collect data to empirically assess the research model. In total, 543 usable responses were collected using a questionnaire derived from previous research. Both the structural equation model and partial least squares were used to study the model concerning different user groups. Findings, The results indicate that there are significant differences in the users' perceptions of mobile internet usage during its different innovation diffusion stages. Of the determinants, perceived enjoyment is the most important predictor of mobile internet use. In addition to motivating users by making services more enjoyable, the findings suggest that practitioners should take the differences of adopter groups into account. Making the mobile internet easy to use and compatible with users' lifestyles would promote the use of technology as well.

• 한국전문물리치료학회지
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• 제4권2호
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• pp.18-35
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• 1997

The purpose of this study were to determine causes of low back pain in bus drivers who usually work in prolonged sitting position and to find the relationship of back pain with general characteristics and work environmental characteristics, stress symptoms, to com맹re lordosis angle of habitual driving posture and resting posture in low back pain group and non-low back pain group, and to use this result as a basis for improvement of work environment and comprehensive rehabilitative management of low back pain. Ninety-eight bus drivers were selected from the membership of an urban transit union in Seoul. These informations were collected from May 1, 1997 to May 25, 1997 by means of structured questionnaires and X-ray findings. These data were analyzed by $x^2$ test, t-test, logistic regression using SAS. The major results were as follows: 1. Of the respondents, 66.3% of bus drivers were found to be experiencing back pain. 2. Of the respondents of low back pain groups, 78.5% reported that major cause of low back pain was due to prolonged sitting. 3. The group with experiences of frequent or continuous vibration had more low back pain (p<0.05). There were no significant differences among other work environmental factors. 4. Average stress score was significantly higher in the group with low back pain than in the group without low back pain (p<0.05). 5. The results of the logistic regression analyses were statistically significant vibration from seat and stress score among the risk factors (p<0.05). 6. Averaged lordosis angle of habitual driving posture was $7.6{\pm}14.9$ degrees in low back pain group, $16.5{\pm}8.7$ degrees in non-low back pain and averaged lordosis angle of resting sitting posture was $10.8{\pm}13.7$ degrees in low back pain, $18.9{\pm}9.6$ degrees in non-low back pain group but the difference in mean lordosis angles of two groups was not statistically significant. The results of this study indicate that professional drivers developed chronicity of low back pain due to unfit seat, poor habitual posture and stress from vibration or other risk factors. Therefore, there is need to improve work environment, i.e. enough resting, to set a seat to support lumbar spine properly and to provide comprehensive rehabilitation program including early diagnosis, proper treatment and education for self help management.

• 융합정보논문지
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• 제12권5호
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• pp.177-182
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• 2022

본 연구는 3D 프린터로 제작 도구를 이용하여 근육의 주행방향에 대해 강찰법 방향의 차이로 인한 근활성도 차이를 확인하고자 한다. 대상자는 건강한 20대 성인 20명으로 진행하였고, IASTM을 근육 주행방향의 수직 강찰법 중재(수직군)와 근육 주행방향의 수평 강찰법 중재(수평군)를 적용하였으며 대상자를 각 10명씩 배치하였다. 모든 대상자는 중재 전과 후의 근활성도를 독립표본 t-검정과 대응표본 t-검정을 사용하여 측정, 비교하였다. 본 연구의 결과는 수평군에서 근활성도가 감소하였으나 수직군에서 근활성도는 유의한 증가가 나타났다. 이는 IASTM의 적용에 방향성의 차이가 의미가 있음을 알 수 있다.

• 재활복지공학회논문지
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• 제10권2호
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• pp.133-139
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• 2016

전동휠체어는 장애인들이 편리하게 이동할 수 있는 이동수단이다. 하지만 전동휠체어를 사용하다가 전복되는 사고가 매년 증가하고 있다. 현재 전동휠체어 관련한 KS P 7176 규격에는 동적안전성 시험항목이 있지만 이는 전동휠체어의 안전성을 확보하지 못하였다. 본 연구에서는 새롭게 개발한 장애인 차량에 적재 가능한 접이식 전동휠체어를 소개하고 본 휠체어를 기본으로 주행 중 동적 전도해석 기법에 관한 내용을 소개하고자 한다. 전도해석은 force-moment 안정성 측정법을 사용하였으며 회전반경, 가속도, 무게중심점에 대한 영향을 평가하였다. 본 해석 방법으로 전동휠체어의 안정성을 확보할 수 있으며 동적 안정성 평가 항목 개발에 기초자료로 제공할 수 있다.

• 재활복지공학회논문지
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• 제9권1호
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• pp.81-87
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• 2015

파워 어시스트 휠체어(PAW)가 주행방향을 일직선으로 유지하기 위해서는 좌우 휠에 같은 힘이 전달되어야 한다. 하지만 인간은 양쪽 팔 힘이 서로 다르고 항상 균일하게 자신의 힘을 제어하지 못하므로 PAW 운전시 방향보정을 빈번하게 해야 할 수도 있다. 따라서 직선구간에서 PAW의 주행방향을 일정하게 유지하거나 회전구간에서 방향전환을 신속하게하기 위해서는 불균형한 입력토크로부터 사용자의 주행의도를 감지하여 적절한 어시스트 출력토크를 생성하여야 한다. 본 연구에서는 좌우측 push-rim에 가해지는 입력토크 신호간의 시간적 유사성으로부터 사용자의 주행의도를 판단하는 새로운 방식를 제시하고, 이를 이용한 토크밸런스 제어기법을 제안한다. 그리고 주행실험을 통해 제안한 밸런스 제어기의 효용성을 검증하였다.