http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
면외변위의 정량적 계측을 위한 ESPI와 Shearography의 비교
최정구,김경석,장호섭,정성욱 朝鮮大學校 機械技術硏究所 2005 機械技術硏究 Vol.8 No.2
Electronic Speckle Pattern Interfrometry is a common method for measuring out-of-plane displacement and in-plane displacement and applied for vibration analysis and strain/stress analysis. However, ESPI is sensitive to environmental disturbance, which provide the limitation of industrial application. On the other hand, Shearography based on shearing interferometer can directly measure the first derivative of out-of-plane displacement, which is insensitive to vibration disturbance. This paper proposes the out-of-plane displacement extraction technique from results of Shearography by numerical processing and measurement results of ESPI and Shearoraphy are compared quantitatively.
강경구,김경자 東亞大學校附設 生活科學硏究所 2004 생활과학연구 논문집 Vol.12 No.-
This study is a part of Korean traditional steamed rice cake in layers, which come from Cho-sun Dynasty. It examined the effects of texture which makes Bokryoungchowhago, a type of medicine rice cake, sensational and physical characteristics through medicinal stuffs and preservation periods. After this period, I examined the taste and additional functions of people in modern society and found the followings: 1. The analysis about general ingredients of rice flour shows that rice flour soaked in water has 38.11% of water, 0.25% of reference ingredients, 5.11% of protean, and 0.52% of fat. 2. The result of brightness in chromaticity reveals brightness with increasement of the number of all samples in 4℃ and 20℃, and it shows brightness in the order of honey, oligo sugar, sugar and syrup. The value of a shows the increase of syrup, sugar and oligo sugar, but the decrease of honey. The value of b shows the increase of syrup, oligo sugar and honey, but the decrease of sugar. 3. The result of pH evaluation displays 6.11~5.90 in 4℃ and 6.11~9.54 in 20℃ in the case of syrup, and has higher numerical result of pH in 20℃ more than 4℃. There are the numerical results of pH as the order of syrup, honey, oligo sugar and sugar. 4. The evaluation result of sugar degree shows the degree of sugar degree in the order of syrup, honey, sugar and oligo sugar in 4℃ according to time. The result in 20℃ is the order of honey, syrup, sugar and oligo sugar. 5. The sensational evaluation displays that sugar and honey has good at chewing taste, wetness of inside, and the feeling after swallowing in preservation temperature of 20℃. However, when time passes, oligo sugar displays the highest scores in these fields and sugar displays the lowest scores. 6. The sensational characteristics, which mostly influence the preference rate of Bokryoungchowhago, show as the order of the feeling after swallowing and chewing taste. This result explains oligo sugar among sweetening materials has the best meaning characteristics according the process of preservation time. 7 The evaluation of physical properties by Rheometer displays that the change of hardness of Bokryoungchowhago pertaining oligo sugar as sweetening materials has lower than syrup. This result explains the higher delay of the ageing process according to longer preservation time. 8. The relations between sensational examination and mechanical examination show that the hardness of organization in sensational examination has meaningfully positive relations with of hardness mechanical examination. Overall satisfaction of sensational examination has negative relations with the hardness, positive relations with feeling after swelling, inner moisture and chewiness, and positive relations with elasticity mechanically measured.
권구영,김성현,서미경 한국 정신보건 사회사업학회 1999 정신보건과 사회사업 Vol.8 No.-
The main premise of this study is that mental health porblems of the homeless tend to isolate them from society, prolong their period of homelessness, and make them difficult to reestablish their well-being. With 75 homeless people, we reviewed kind of mental health problems, a correlation among the found mental health problems, and change of the problems with the lapse of time. The major findings of the study were 1) drinking problem of the homeless was much greater than normal persons; 2) as for psychiatric symptoms, Somatization, Phobic Anxiety and Psychoticism were more serious than other symptoms; 3) drinking problem were positively related to Somatization, Phobic Anxiety and Psychoticism, so that homeless persons with drinking problem had more serious psychiatric symptoms; 4) the period of homelessness was related to drinking problem, that is, the homeless who is living on a street-corner during 18 months over were having the most serious drinking problem; 5) the period of homelessness was related to psychiatric symptom, that is, homeless persons at the early stage and for long period of time(over 18 months) had the most serious psychiatric symptoms. These results of 4) and 5) were similar to the reaction of normal persons when they are faced with heavy life event and stress. In conclusion, this study recommends clinicians to intervene mental health problems of homeless people actively at the early stage of homelessness in order to prevent from prolong their homeless period.
최지훈,최경숙,김기훈,박병현,조정구 圓光大學校 醫科學硏究所 2001 圓光醫科學 Vol.16 No.1-2
Thyrotoxic periodic paralysis is characterized by intermittent flaccid paralysis of skeletal muscle, lasting several hours. The underlying pathophysiology of the syndrome is not yet to be well characterized and remains controversal, but reflects altered potassium and calcium dynamics as well as certain morphologic characteristics within the muscle unit itself. It occurs primarily in Asian populations with an overwhelming male preponderance and a higher association of specific HLA antigens. Precipitating factors include high carbohydrate ingestion, exercise, trauma, infection, alcohol ingestion, administration of epinephrine, thyroid hormone, or corticosteroid. If hypokalemia is present, potassium administration may help abort the attack, but the only definitive treatment is formation of euthyroid state. We discribed two patients with hypokalemic thyrotoxic periodic paralysis and one patient with normokalemic thyrotoxic periodic paralysis.
배지훈,강민구,박경용,김갑일 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
In this paper, stair walking of small power biped robot is implemented by load sharing method of walking gait and adding body. Generally, in one foot standing, load is burdened to especial joint. Further, robot's foot is long steps and is lifted up high to go up stairs. So, especial joint is sometimes overloaded during walking and this makes walking impossible. This problem is solved in this paper using adding body, load sharing method and kick action. By this ways, stair walking of small power biped robot can be implemented without overload to joint.
장애인 수행능력향상을 위한 보조공학기기 제공과 인간공학적 접근의 필요성
정민예,김정란,민경철,구인순 한국장애인고용촉진공단 고용개발원 2006 장애와 고용 Vol.16 No.2
장애인의 기능을 향상시킬 수 있는 방법 중 하나는 보조공학기기의 제공이다. 보조공학기기의 제공은 감각, 지각, 인지, 운동능력 등을 전문적으로 평가할 수 있는 전문가에 의해 선택, 적용, 훈련되는 것이 중요하다. 또한 근골격계 질환을 예방하기 위한 인간공학적 접근에 대한 이해와 작업분석, 직무조정이 가능한 전문가에 의해 보조공학기기가 제공된다면 잔존기능의 향상 뿐 아니라 업무동안 바람직하지 못한 자세를 유지함으로써 발병할 수 있는 근골격계 질환 예방까지 기대할 수 있을 것이다. 본 연구에서는 보조공학기기의 이론적 배경과 인간공학적 접근의 이론적 배경을 소개하였고, 적절한 보조도구를 제공한 장애 근로자에 대해 근골격계 질환 위험요인을 측정하였으며, 이를 통한 자세보완이 장애 근로자의 작업 기능을 향상시킬 수 있음을 객관적으로 밝히는 평가결과를 제시하였다. 따라서 장애인의 직업능력을 향상시키려면 다양한 전문가들의 팀 어프로치가 필요하며 체계적인 서비스가 마련되어야 할 것이다. One of the methods to improve functions of the disabled person is to supply assistive devices. It is important for the disabled person that the devices should be supplied by an expert, who is capable of evaluating their sensory, perception, cognition and motor function. Moreover if the expert have knowledge about ergonomlcs, he or she will also prevent the musculo-skeletal disease which may be happen in work place. In this paper, we introduced the theoretical background of the assistive devices and ergonomic approach, and evaluate the risk factors of the musculo-skeletal disease of the disabled worker who was equipped a proper assistive device, and presented objective experimental results that posture intervention by using assistive device can be useful to improve work function of the disabled worker.
건 황색종의 가족력과 관상동맥질환을 갖는 이형집합 가족성 고 콜리스테롤혈증 1례
백승훈,형근영,김경년,조정구,이경근 圓光大學校 醫科學硏究所 1997 圓光醫科學 Vol.13 No.1-2
Familial hypercholesterolemia is a common autosomal dominant disorder with serious health consequences such as the coronary heart disease, in western area affecting approximately 1 in 500 persons in the heterozygous form, is caused by a mutation in the gene for the LDL(low density lipoprotein) receptor. A-45-years old male came to the hospital because of tendon xanthomas on both elbows, knees, and ankles. He also has retrosternal chest pain intermittently since 5 years ago. 4 kindreds of the patient have tendon xanthomas according to autosomal dominant inheritance. Serum levels of total cholesterol and triglyceride were 359 ㎎/dL, 103 ㎎/dL respectively. Lipoprotein electrophoresis showed type Ⅱa pattern. Treadmill exercise test revealed angina pectoris. The case of familial hypercholesterolemia who has familial inheritance of tendon xanthoma is rarely reported in Korea. We report this case with a review of the related literature
배지훈,김종철,박경용,강민구,김갑일 明知大學校 産業技術硏究所 2000 産業技術硏究所論文集 Vol.19 No.-
In this paper, design and construction of mobile robot is conducted and the error reduction and obstacle avoidance techniques is introduced. Up to now, in the design of most mobile robots, there are emphasis on the compensation of tracking errors using the additional sensors and guidance method, rather than the reduction of the tracking errors of motor itself and wheel errors. In this purpose, high performance motor and encoder are used for the driving actuator, and the acceleration/deceleration technic is introduced to reduce the driving errors. Also ultrasonic sensor performs obstacle avoidance, which is proved using the driving test.
이중현,김용섭,이정호,이창우,김상욱,이문섭,오민구,하달봉,이경섭 동국대학교 의학연구소 2000 東國醫學 Vol.7 No.-
신장이식은 환자의 삶의 질을 높이고 거의 정상적인 사회생활을 가능하게 함으로써 말기신부전 환자의 3가지 신대체 요법(혈액투석, 복막투석, 신장이식) 중에 가장 효과적이고 각광받는 치료법이라 할 수 있다. 최근 들어 의료기술과 의학의 발달로 신장이식의 성공률은 과거에 비해 비약적으로 높아지고 있으며 국내에서도 점차 신장이식수술을 받는 환자가 증가하고 있으나 서울이나 다른 대도시에 비해 의료환경이 열악한 중소도시나 지방의 병원에서는 아직도 시행하지 못하고 있는 형편이다. 이에 저자들은 경북 최초로 자체 의료진에 의해 고혈압과 말기 신부전으로 동국대 포항병원에서 혈액투석을 받고 있던 32세의 남자환자에게 부인으로부터 신장을 제공받아 신장이식을 성공적으로 시행하였기에 문헌고찰과 함께 보고하고자 한다. Kidney transplantation is the preferred treatment modality for many patients with end-stage renal disease (ESRD), because it offers improved quality of life over both hemodialysis and peritoneal dialysis. Patients who do well after transplantation generally report improvement in vitality and freedom to return to the style of life that they experienced before their progression to ESRD. Recently, the success rate of kidney transplantation is greatly being increased as the surgical technique and immunosuppressive drugs are developed. Kidney transplantation is also popular in Korea which has good result. But, until now the general hospitals which are located at small city can't try the kidney transplantation because they don't have proper facilities and experts. We firstly experienced a case of kidney transplantation in a 32 years old man with hypertension and chronic renal failure at KyoungBuk province. So we report this case with references.
( Kyoung-hee Gu ),( Gum-hwa Lee ),( Weon-gu Lee ),( Chang-seok Oh ),( Ki-woo Nam ) 한국산업융합학회 2022 한국산업융합학회 논문집 Vol.25 No.2
In this paper, the evaluation equations proposed by Tange et al. and Ando et al. were used to evaluate the threshold stress intensity factor △K(R/th(s)) and fatigue limit , △σ(R/WC) according to the small crack of offshore structural steel F690. Despite the differences in concept and shape of the two equations, the △K(R/th(s)) and △σ(R/WC) proved completely consistent. It is possible to use these equations to evaluate the dependence of the crack length on the △K(R/th(s)) and △σ(R/WC) of structures made of all steel grades. With these equations, the characteristics of microcracks can be quantitatively evaluated, and the safety and reliability of the structure can be secured.