• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2001년도 춘계학술대회논문집
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• pp.571-576
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• 2001

Hydroforming, the new production technology, has been used to manufacture many parts of vehicle in the recent auto industry. When Hydroforming is applied, it is possible to make parts simplification and flexible alteration of section shape in many advantages such as weight reduction, number of parts reduction or performance improvement. This research into shape optimization which reduces number of parts and weight maintaining performance was achieved. In this paper, the COWL CROSS BAA and MT'g BAKT parts of A car STEERING support SYSTEM was introduced by using Hydroforming.

• 대한간호학회지
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• 제40권2호
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• pp.277-286
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• 2010

Purpose: This study was done to investigate the effects of breast-feeding education and support services on rate of breast-feeding three and six months after birth, and the effect on infant's growth (weight, height, body mass index [BMI]). The experimental group which had both education and support services was compared with the control group which had only breast-feeding education. Methods: This study was a quasi-experimental study with a time-series design. The participants were 39 mothers who were hospitalized for childbirth. Twenty mother were assigned to the experimental group and 19 mothers, to the control group. The breast feeding education was done during hospitalization, and support services were provided once a week after discharge for a month (a total 4 times) by a maternity ward nurse. Data regarding breast-feeding rate at one month after childbirth was collected by phone call; the breast-feeding rates at three and six months after childbirth were collected in a visit to the families. The child's weight and height were also measured during the visit. Results: The experimental group had a statistically significant higher rate for frequency of breast-feeding at one, three and six months after childbirth than the control group. However, there was no meaningful difference between the two groups for infant growth. Conclusion: The results of this study suggest that breast-feeding education is helpful for a start, but support services are also necessary to sustain breast-feeding.

• The Journal of Korean Physical Therapy
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• 제24권5호
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• pp.300-305
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• 2012

Purpose: This study examined the muscle activity of the trunk muscles during weight shifting exercises on a stable and unstable surface. Methods: Ten healthy young subjects (4 males, 6 females) with no medical history of lower-extremity or lumbar spine disease were enrolled in this study. The muscle activity was recorded using surface electromyography (EMG) electrodes from the both sides of the external obliques and erector spinae muscles. Results: The EMG activities of the both rectus abdominalis, both external obliques and erector spinae muscles were significantly higher when the weight shifting exercise was performed on a firm surface than when a balance pad with a balance ball was used. In weight shifting exercises, the EMG activity of the contralateral external obliques and erector spinae muscles was significantly higher than that of the ipsilateral external obliques and erector spinae muscles under all three support surface conditions. Conclusion: Performing weight shifting exercise using an unstable surface is a useful method for facilitating the trunk-muscle strength and trunk stability.

• Physical Therapy Rehabilitation Science
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• 제2권2호
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• pp.104-110
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• 2013

Objective: The purpose of this study was to investigate the effects of intensive gait training with body weight support treadmill training on gait and balance in stroke disability patients. Design: Randomized controlled trial. Methods: Twenty-six stroke patients (20 men and 6 women) participated in this study. All subjects were hospitalized patients. They were randomly divided into two groups: the experimental group (body weight supported treadmill training group, n=14) and control group (treadmill group, n=12). The mean ages were 52.07 years (experimental group) and 53.83 years (control group). Subjects in both groups received conventional training 10 times/wk. Subjects in the experimental group practiced body weight supported treadmill training for 30 minutes a day, 3 day/wk. Subjects in the control group practiced treadmill training for 30 minutes. The Berg Balance Scale (BBS) and GAITRite were used to evaluate balance and gait parameters (step length, cadence and gait speed) before and after the intervention. Results: BBS scores in the experimental group showed significantly greater improvement ($4.33{\pm}1.54$), compared with the control group (p<0.05). Significantly greater improvement in the gait speed ($24.13{\pm}4.53$ cm/s), affected side step length ($10.40{\pm}3.42$ cm), sound side step length ($11.97{\pm}3.29$ cm), and cadence ($23.88{\pm}5.52$ step/min), compared with the control group (p<0.05). Conclusions: Intensive gait training with Body Weight Support Treadmill Training may improve gait and balance in subacute stroke.

• 대한방사선기술학회지:방사선기술과학
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• 제46권5호
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• pp.395-399
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• 2023

The knee arthritis patients are generally performed standing position radiography. However, patients with pain caused by degenerative diseases or injuries in the knee have difficulty maintaining a standing position. Therefore, this study aims to develop a knee joint standing weight bearing projection assist device to solve these problems when patients undergo knee radiography due to various diseases. The design of the knee joint weight-bearing radiography assist device is carried out with 3D design and drawing production to secure basic data, electric support and frame manufacture. A fixed device for maintaining the patient's knee standing weight-bearing projection, an electric digital height device, a digital protractor, and a safety device were designed. The arm support is made of PVC with a cushion to relieve the impact and make it easier to remove debris. The digital electric device can be moved up and down according to the patient's height, and a remote control is attached. The safety device is made to be adjustable in size by attaching metal hooks on both sides of the frame and to shield the scrotum. A digital protractor was attached to the side frame to set the desired knee angle. When a self-made assist device was used to perform a knee joint standing weight bearing projection, it helped maintain arm support and lower extremities position. In addition, the height could be adjusted using an assist device during standing projections, which helped the patient maintain the position.

• 통상정보연구
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• 제14권1호
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• pp.301-314
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• 2012

FTA 체결에 따른 피해지원 및 경쟁력 향상을 위해 향후 농수산업 등의 직접적 피해에 대해서는 피해보전직불제도와 폐업지원제도를 통해 지원하며, 피해보전직불제도는 FTA로 인한 수입증가로 피해가 발생하였을 경우 발생된 피해의 일정부분을 피해보전직불금으로 보전하여 농수산업의 경영안정을 도모하는 제도이고, 폐업지원제도는 FTA로 인한 수입증가로 과수, 축산 등 해당 사업을 계속하는 것이 곤란하다고 인정하는 품목에 대하여, 농가가 폐업을 희망하는 경우에 폐업지원금을 지급함으로써 농가의 경영안정과 해당 산업의 구조조정을 도모한다. 산업경쟁력 강화 및 농어촌 소득기반 확충을 위한 지원방안 마련하여 해당 산업의 지원하며, 농공단지 확대 조성, 도농교류 확대 등을 통해 농어촌 지역 소득기반을 강화에 노력할 예정이다. 본 연구에서는 FTA 체결에 따른 국내지원대책을 직접적 피해보전, 산업별 경쟁력 강화, 소득기반확충으로 나누어 계층설계를 하였다. 직접적 피해보전대책에는 농업인, 어업인, 제조업, 서비스업 경영인, 근로자로, 산업별 경쟁력 강화는 농업, 수산업, 제조업, 제약산업, 서비스업, 소득기반확충에는 농업과 어업에 대하여 계층적으로 구조화된 평가틀을 구축하였으며, 27개의 하위기준의 측정항목을 선택하여 AHP분석을 위한 계층 설계를 하였다. 국내지원대책 중에서는 직접적 피해보전 대책보다는 산업경쟁력 강화와 소득기반확충을 위한 대책의 중요도가 높게 나타났다. 산업경쟁력강화에서는 농업과 제조업에 대한 지원을 소득기반확충에서는 어업보다는 농업에 대한 지원을 그리고 직접적 피해보전대책에서는 농업인과 근로자에 대한 지원대책이 중요도가 높은 것으로 분석되었다.

• 한국산학기술학회논문지
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• 제11권10호
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• pp.3658-3665
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• 2010

최근 고령화 사회로의 진입 및 장애 인구의 증가로 인해, 인간의 복지를 위한 자동화 시스템에 대한 수요가 늘고 있다. 특히 재활 자동화와 관련한 로봇 시스템은 환자 본인 및 치료 보조자에 대한 수고를 덜어주면서도 기존의 전통적인 재활효과에 상응하는 성과를 얻을 수 있을 것으로 기대되고 있다. 본 연구는 하지 근력이 약화된 사용자들의 신체 자중을 보상해줌과 동시에 정상인과 같은 패턴의 보행 훈련을 수행할 수 있는 모바일형 보행 재활 시스템을 제안하고자 한다. 특히, 자중보상 시스템은 신체의 자세 변화 특징을 반영하여, 기구학적인 분석을 통해 구현하였으며 보행 가이드를 위한 제어 알고리즘과 더불어 메인 컨트롤 시스템이 내장된 모바일 플랫폼에 통합 적용되었다. 이러한 모바일 플랫폼은 사용자의 보행 속도의지를 반영하는 UCS(User Command System)와 플랫폼 자체에 내장된 자율주행 알고리즘의 병합되어 운용되도록 고안되었으며, 본 논문에서는 보행 훈련시의 BWS(Body Weight Support)의 효과에 대한 검증에 집중하고자 한다. 이를 위해 인체의 근전도 신호를 측정할 수 있는 EMG(Electromyography) 센서를 활용하여, BWS 및 모바일로봇을 활용한 자중 보상 시의 피험자의 하지 근력 패턴을 측정 및 분석하여, 정상 보행자와의 차이점을 비교함으로서 본 연구의 타당성을 검증하였다.

• 전자공학회논문지
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• 제50권11호
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• pp.90-98
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• 2013

지역적 정합방법을 이용한 스테레오 시스템은 알고리즘의 특성상 하드웨어 설계가 용이하여 많이 사용되나 낮은 정합률로 인해 정확한 깊이 영상을 얻기 힘들기 때문에 많은 응용 분야에 사용하기에 제한이 있다. 본 논문에서 제안한 스테레오 시스템은 픽셀의 변화도(gradient)를 기반으로 한 적응적인 가중치 알고리즘을 이용하여 높은 정합 성능을 보이며 하드웨어로 설계하였을 때 실시간처리가 가능하다. 일반적으로 적응적인 가중치 윈도우를 적용할 경우 중간 결과를 재사용하기 불가능하지만 행, 열을 분리하여 처리함으로써 데이터를 재사용할 수 있고 따라서 처리성능이 개선되었다. 알고리즘에 필요한 지수 및 아크탄젠트 함수를 구현하기 위해 선형(PWL, piecewise linear) 및 계단(step) 함수 등으로 근사화한 뒤 에러를 분석하여 최선의 파라미터를 선택하였다. 제안한 구조는 실시간처리를 위하여 9개의 프로세서를 사용하여 병렬처리를 하였으며, 동부하이텍 0.18um 라이브러리로 합성하였을 경우 최대 동작주파수 350MHz(33 fps)와 424K 게이트의 하드웨어 복잡도를 나타내었다.

• 대한정형도수물리치료학회지
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• 제10권1호
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• pp.83-101
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• 2004

The propose of the study was to evaluate the efficacy of the partial body weight support during treadmill training on the ambulation in elderly with chronic stroke. Fourteen hemiplegic volunteers participated and were divided into an experimental and control groups. In the experimental group, the body weight support during treadmill training was performed 3 times per week for 6 weeks. In the control group, usual treadmill training was applied. Before and after experiments, temporal-spatial gait parameters were measured. The date of 14 patients who carried out the whole experimental course were statistically analyzed. The results of the study were : 1. In the comparison of gait velocity before and after experiment, the gait velocity was significantly increased in the experimental group and the control group(p<.05). In the comparison of difference of the gait velocity between groups, there was not, significant difference between the experimental group and the control group(p>.05). 2. In comparison of gait cadence before and after experiment, the gait cadence was significantly increased in both groups(p<.05). In the comparison of difference of the gait cadence between groups, there was not significant difference between the experimental group and the control group(p>.05). 3. In the comparison of step length before and after experiment, the step length was significantly increased in the experimental group and the control group(p<.05). In the comparison of difference of the step length between groups, there was not significant difference between the experimental group and the control group(p>.05). 4. In the comparison of single support time asymmetry before and after experiment, the single support time asymmetry was no significant difference between groups(p>.05). In the comparison of difference of the single support time asymmetry between groups, there was not significant difference between the experimental group and the control group(p>.05). 5. In the comparison of step length asymmetry before and. after experiment, the step length asymmetry was not significant difference between the experimental group and the control group(p>.05). In the comparison of difference of the single step length asymmetry between groups, there was not significant difference between the experimental group and the control group(p>.05).

• The Journal of Korean Physical Therapy
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• 제24권6호
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• pp.398-404
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• 2012

Purpose: This is designed to study the effect of weight-support walking training through motor learning on motor functions of children with cerebral palsy, in particular their activity of daily living and balance. Methods: Thirteen children with spastic cerebral palsy, at gross motor function classification system (GMFCS) levels III~IV, underwent treadmill walking training. It used principles of weight support, 4 times a week for 7 weeks, 10 minutes at a time, before and after neurodevelopmental physical therapy. Everyday functions were measured using Functional Independence Measure for Children (Wee-FIM). The ability to keep their balance was measured using electronic measuring equipment from good balance system and the assessment was made before and after the experiment. Results: There were significant differences (p<0.05) between pre and post experiment levels of functional independence in everyday life, in self-care activities, mobility, locomotion and social cognition. With regard to changes in standing balance, there were significant differences before and after the experiment (p<0.05) in GMFCS level III. There was a reduction in the agitation velocity in the x- and y-axes which measures the left-to-right shaking; in GMFCS level IV, velocity moment was reduced. Conclusion: Walking training using a treadmill can help improve the everyday activity and balance in children with spastic cerebral palsy. It can also be served as a useful purpose as a method of intervention in pediatric care.