퍼지제어기를 이용한 보행재활로봇의 공압식 조작기 개발

김승호(Seungho Kim),정승호(Seung Ho Jung),류두현(Doo Hyun Ryu),조강희(Kang Hee Jho),김봉옥(Bong Ok Kim) Korean Society for Precision Engineering 2000 한국정밀공학회지 Vol.17 No.12

건강한 아동이 걸을 때에 생리학적 소비지수

이향숙(Lee Hyang Sook),김봉옥(Kim Bong Ok) 한국전문물리치료학회 2002 한국전문물리치료학회지 Vol.9 No.1

Physiological Cost Index(PCI) of walking has been widely used to predict oxygen consumption in health subjects or patients. The purpose of this study was to evaluate the predictability of physiological cost index of walking for the amount of exercise and cardiac function. Walking exercise was conducted in 67 healthy children (age 4-12) with a self-selected comfortable walking speed on the level surface. Walking speed was calculated, and heart rate was measured before and immediately after the walking. PCI was calculated for statistical analysis. The results were as follows; 1) The walking speed tends to increase and PCI of walking tends to decrease with age. There was significant difference in walking heart rate tends to decrease Linear regression equation between walking speed and age was 'Y(walking speed) = 2.124X (age)+48.286'(R2=.337), (p=.00). 3) The walking heart rate tends to decrease with age. Linear regression equation between walking heart rate and age was 'Y (walking heart rate) = 143.346-2.63X(age)' (R2=.3425), (p=.00). 4) The walking heart rate decreased as body surface area (BSA) increased. Linear regression equation between walking heart rate and BSA was 'Y (walking heart rate)=149.830 - 27.115X(BSA)' (R2=.3066),(P=.00). In conclusion, these equations and PCI could be useful to quantify the variation of energy expenditure of children with pathological gait when compared with age-matched healthy children.

결정트리 데이터마이닝을 이용한 족부 임상 진단

김진호(Jin-ho Kim),박인식(In-sik Park),김봉옥(Bong-ok Kim),양윤석(Yoon-seok Yang),원용관(Yonggwan Won),김정자(Jung-ja Kim) 大韓電子工學會 2011 電子工學會論文誌-CI (Computer and Information) Vol.48 No.2

최근 건강에 대한 관심이 고조 되면서 발과 다리에 대한 진단, 치료, 예방의 전반적인 진료를 맡고 있는 족부의학(Podiatry)이 주목받고 있지만 국내 연구는 미비한 실정이다. 또한 임상 데이터 분석에 있어 대부분의 기존 연구들은 기초 통계적인 방법에 근거한 정량분석만을 수행함으로서, 획득된 정보를 임상에 적용 하는데 있어서는 충분한 신뢰성을 보장할 수 없다. 임상데이터 마이닝은 데이터마이닝의 다양한 분석 방법론을 이용하여 의료 현장에서 발생한 임상 데이터를 분석함으로서 전문가의 진단과 치료 과정의 결정에 도움을 주고 있다. 결정트리(Decision Tree) 알고리즘은 분석과정의 설명과 표현성이 좋고, 결과에 대한 해석이 편리하여 임상에서 적용하기가 용이하다. 본 연구에서는 신뢰성 있는 족부 임상 진단 평가를 위해 충남대학교병원 재활의학과 신발클리닉에 내원한 환자 1310명(남자:633명, 여자:677명)의 2620족(foot)을 대상으로 수집된 진료 데이터에 결정트리를 적용하여 22개의 족부 질환 인자에 따르는 15개의 족부 질환을 분류하고 그에 대한 64개의 진단 규칙을 탐사 하였다. 또한 5개의 클래스(영유아, 소아, 청소년, 노인, 전체)로 분류된 각 그룹들로부터 생성된 결정 트리를 통해 각 클래스의 질환 특징과 질환 주요 인자, 클래스 간 상관관계를 비교, 분석하였다. 탐사된 결과는 족부 임상 전문가의 의사결정에 더욱 정성적이고 유용한 선험적 지식을 제공할 것이고, 효과적이고 정확한 진단과 예측을 위한 임상 도구로써 사용될 수 있다. With growing concerns about healthy life recently, although the podiatry which deals with the whole area for diagnosis, treatment of foot and leg, and prevention has been widely interested, research in our country is not active. Also, because most of the previous researches in data analysis performed the quantitative approaches, the reasonable level of reliability for clinical application could not be guaranteed. Clinical data mining utilizes various data mining analysis methods for clinical data, which provides decision support for expert's diagnosis and treatment for the patients. Because the decision tree can provide good explanation and description for the analysis procedure and is easy to interpret the results, it is simple to apply for clinical problems. This study investigate rules of item of diagnosis in disease types for adapting decision tree after collecting diagnosed data patients who are 2620 feet of 1310(males:633, females:677) in shoes clinic (department of rehabilitation medicine, Chungnam National University Hospital). and we classified 15 foot diseases followed factor of 22 foot diseases, which investigated diagnosis of 64 rules. Also, we analyzed and compared correlation relationship of characteristic of disease and factor in types through made decision tree from 5 class types(infants, child, adolescent, adult, total). Investigated results can be used qualitative and useful knowledge for clinical expert`s, also can be used tool for taking effective and accurate diagnosis.

공동주택의 기계설비 및 배관의 부식방지 기법

백춘기(PAEK CHOON-KEE),김봉옥(KIM BONG-OK) 대한설비공학회 1996 대한설비공학회 강연회 및 기타간행물 Vol.- No.-

3차원동작측정에 의한 얼굴 표정의 분석

박재희(Jae Hee Park),이경태(Kyung Tae Lee),김봉옥(Bong Ok Kim),조강희(Kang Hee Cho) 한국정보과학회 1997 한국정보과학회 학술발표논문집 Vol.1997 No.2

상완 신경총 손상의 전기 진단학적 고찰

김봉옥 충남대학교 의과대학 지역사회의학연구소 1989 충남의대잡지 Vol.16 No.2

Clinical and electrodiagnostic findings were analyzed retrospectively in 25 brachial plexus injury patients who underwent electrodiagnoses during the period of one and a half years from March 1, 1988 to August 31, 1989 in the electrodiagnosis laboratory of the Department of Rehabilitation Medicine in Chungnam National University Hospital. Peripheral nerve conduction studies, paravertebral muscle needle electromyography and median nerve somatosensory evoked potential (SSEP) study were included in the eletrodiagnosis of brachial plexus injury. Among 25 patients 22(88%) were male with 16 patients(64%) n their third and fourth decades. Traffic accident was the leading cause of injury followed by industrial accidents and direct trauma. According to the electrodiagnostically determined level of injury, 17 patients had postganglionic lesion, 5 preganglionic and 3 pre & postganglionic lesion. There were 17 whole arm type, 5 Erb’s type, and 3 Klumpke’s type injuries. Among 15 patients who underwent SSEP study, 10 patients showed abnormal N9 and N20 potentials, 4 of whom had normal sensory nerve action potentials.

보행속도에 따른 운동형상학적 특성

김봉옥,윤승호,모정욱,김병식 충남대학교 의과대학 지역사회의학연구소 1996 충남의대잡지 Vol.23 No.1

Kinematic characteristics at different speeds of walking are important to understand the basic mechanisms of locomotion. Fourteen men with no history of neuromusculoskeletal disorder were studied with three dimensional motion analysis system during walking with 5 different speeds (57.11-99.09m/min). Time parameters, distance parameters, and kinematic analysis of ankles, knees, hips, and pelvis on sagittal, coronal, and transverse planes were compared with each other on different walking speeds. It is found that increasing walking speed 1. increased stride length and stride length raio, but decreased the step length and step length ratio. 2. increased the angle of ankle, knee & hip joint on sagittal plane during early and late stance period, due to the greater forces at heel-strike and toe-off. 3. did not change the kinematic characteristics of ankle, knee & hip joints on 3 planes during the swing phase. The result of this study can be usefully utilized as the basic data to design and evaluate prosthetic devices, and to detect abnormal gait performances.

척수손상 환자의 합병증

김봉옥,박상균,남명호,윤승호 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.2

To evaluate the rehabilitative care needs of the patients with spinal cord injury in this regional area, the complications which were seen in the department of rehabilitation medicine in Chungnam National University Hospital during the 1st year since the opening of the isolated rehabilitation medicine ward in September 1989 were analyzed. The study population was consisted of 25 men and 2 women. Nine cases (33.3%) were in the 20-29 age group and 11 cases (40.8%) were injured by traffic accident, the most common cause of traumatic spinal cord injury in this study. Sixteen cases(59.2%) were paraplegics and eleven cases(40.8%) were quardriplegics. The duration from the onset of injury to admission to the department of rehabilitation medicine ranged from 21 days to 14 years with mean of 18 months. The complications seen in this study were as follows. 1. Urinary tract infections, most common complication, were found in 14 cases (51.6%) followed by decubitus ulcers (44.4%), edema of leg (22.2%), spasticity (18.5%). 2. The most common organism of urinary tract infection was E.coli(43.0%). 3. Among the 22 cases which underwent IVP and VCUG, 2 cases showed hydronephrosis in IVP and 4 cases showed vesicoureteral reflux in VCUG. 4 The most common site of pressure sores was sacrum(53.3%). 5. The mean duration of pressure sore healing with non-surgical treatment was 18 days in Grade II and 42 days in Grade III. With the above results, it is concluded that most frequent complications of patients with spinal cord injury were urinary tract infection and pressure sores, with most of them being occurred before the admission to department of rehabilitation medicine and being treated completely during the stay in the department of rehabilitatiom medicine, and that the comprehensive rehabilitation treatment for the prevention of complications is necessary from the onset of injury.

秋史 金正喜의 濟州流配文學 硏究

梁淳珌,金奉玉 제주대학교 1991 논문집 Vol.32 No.1

The purpose of this study is to understand Choosa's literature by analyzing 20 exile chinese poems and 48 exile letters(27 Chinese letters and 21 Korean letters), which was written for nine years of his exille. Conclusions of this study are as follows: (Ⅰ) Exile chinese poetry expresses emotion in the exile's life, such as affection for the kings, repent of individual situation, life in seclusion, love for nature, nostalgic reminiscence, great sarrow, lament for the world, tast, and transience. This proves that while living in seclusion, Choosa not only eulogized the nature but also devoted himself to an artistic life with the inspiration obtained from probing nature. (Ⅱ) In analyzing exile letters, I quoted Busemann's emotional and intentional phase replacement theory and through this method, I concluded the followig. 1) His fraternity with his brother and elder cousin when he was exiled shows emotional phase. This derived its origin from environmental factors of an isolated island and from his inner state of mind covered with hopelessness and solitude. 2) His emotional phase for his wife when he was exiled to Cheju-do, was his confirmed love and respect, which we can't find in a traditional and noble family. But I found out this in his letters sent to his wife. He wrote the letters to his wife using honorific expressions and unique words. I could reconfirm this in a mourning poem and a funeral address expressing his regret over his wife's death. Especially, more attention should be paid to use creative words for his wife. 3) His emotional phase for his children twmed out to be a stern father. He said that mountains and streams couldn't break affecti on between them son, even though they lived at a long distance each other. I could find his emotional phase in taking attitude toward his son's reading. And he has an intellectual and conservative phase, from the viewpoint of advising his adopted son, Sang-moo to observe his family precepts "To behave oneself decently". 4) He regarded sacrificial rites as a sincerity, and he was glad to take a descendant. In this sence, we can claim that his intention to be anxious about his family shows us his distinct learning toward conservatism. 5) He struggled not to lose his moral sense of a classical scholar during his exiled life to Cheju-do. He devoted all his energies to all things. He always carried about books with him, and his action was sincere. He completed "CHOOSA-CHE; his unique style of penmanship" and "SAEHAN-DO; his painting showing one's true value when he is in adversity", while in Cheju-do. In view of this, we contend that he was great scholar who acted up to his principles and that he overcome difficulties, frustrations, and despairs during his exiled life. 6) He realized his rational intention, by maintaining the relation of teacher and pupil. Only if the pupils devoted themselves to their studies, he taught them with ail his might. Surely he was looked up to as their true preceptor. Letters are materials showing personal aspects such as ways of thinking and ways of life. From this point of view, this study aims to understand Choosa's letters written when he was in exile. For this purpose, I made an concrete analysis of the letters based on the phase-replacement theory. It is highly valued that Choosa wrote 21 letters to his wife and daughter-in-law, which reflects his real life-style and practical conscionsness of his languge and literaure as a means of communication.

대전·충남 지역 재가 척수장애인의 재활실태 조사

김봉옥,박상균,방덕영 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.2

The purposes of this study were to evaluate the status of rehabilitation of spinal cord injured patients and to obtain baseline data for their comprehensive rehabilitation in Taejon and Chungnam area by questionnaire to the spinal cord injured in this area who suffered for 1 year or longer. The study population was consisted of 79 men, and 3 women. The results were as follows. 1. In age distribution, 33 cases(40.2%) were in their fourth decade and 19 cases(23.2%) were in the fifth decade. The causes of the injury were traffic accidents, hit by flying object, falls, and diseases in the order of frequency. 2. Twelve cases(14.6%) were quadriplegics, 70 cases(85.4%) were paraplegics, and 49 cases(59.87%) were job-related injury. 3. Most of the patients experienced various complications such as pain in paralyzed area, spasticity, and urinary tract infections in the order of frequency. 4. Sixty-seven cases(81.7%) were not supported by the goverment's plan to provide orthoses for the disabled with low income. 5. Among architecturaa barriers, the most common limitation to the patients was toilet(51.2%) accessibility. 6. In men responders, 34 cases(75.4%) were unable to pursue sexual intercourse. 7. The most common cause of dependency in ADL was bowel and bladder problem. With the above results, we conclude that 1) establishment of the comprehensive spinal cord injury center, 2) provision of opportunity of the continuous formal education, 3) assistance of productive activities, 4) removal of architectural barriers at home and community, and 5) obligation of registration of the disabled are necessary for the comprehensive rehabilitation of spinal cord injured patients is Taejon and Chungnam region.