• Journal of Chest Surgery
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• 제20권4호
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• pp.715-722
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• 1987

A clinical analysis was performed on 823 cases of the chest trauma experienced at department of thoracic & cardiovascular surgery, Kyung Hee University Hospital during the past 8 years from Jan, 1978 to Aug. 1986. 1. the ratio of male to female patient of the chest trauma was 3:1 in male predominance. 2. The common age groups were 3rd, 4th and 5th decades. 3. The most common causes of the chest trauma was traffic accidents [79.8%] were injured due to non-penetrating injuries and the remainders [166/823, 20.2%] were injured due to penetrating injuries 4. The frequently injured site of the chest trauma was left side of the chest [46%], and the right side was 42% 5. The most common injury from non-penetrating trauma was rib fracture [77.5%], and the incidence rate of flail chest was 59% of all cases of rib fractures. 6. The incidence rate of hemopneumothorax was 42.9% in non-penetrating traumas, and 84.3% in penetrating traumas. 7. The most common method of surgical treatment was closed tube thoracostomy [37.3%], and open thoracotomy was performed in 71 cases [8.6%]. 8. the overall mortality was 2.2%, and common causes of death were cerebral damage, respiratory insufficiency, and hypovolemic shock.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2006년도 춘계학술대회 논문집
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• pp.311-312
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• 2006

In this paper, steering systems for mobile robot with permanent magnet wheels are discussed. The mobile robot with permanent magnet wheels can have three different types of steering and driving configurations; two-wheels, three-wheels, four-wheels. By a Two-WD(Wheel Driving) system, driving and steering characteristics are controlled by ratio of each wheel speeds. Three-WD system is steered by a front wheel and driven by rear wheels. Four-WD system has better stability than two wheel system. Usually the permanent magnet wheel has nearly none slip. Thus turning radius of the mobile robot with three-WD and four-WD System will be increased and the steering and driving system will be complicated. To solve this problem, two magnet wheels with two dummy wheels are used in this study. fuming radius of the developed mobile robot is small and the structure of the robot is simple. It is possible to move forward, backward, to turn left and right, and to rotate freely with two-WD. This study proved that two-WD system is very suitable fur the mobile robot with permanent magnet wheels.

• Journal of Chest Surgery
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• 제19권3호
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• pp.385-390
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• 1986

Empyema is a severe infection encountered in the pediatrics. With advance of the antibiotics and chemotherapeutics, there was a marked decrease in number of empyema. Empyema complicated by staphylococcal pneumonia in infant and children has been distressing problem, and the management of this complication has been discussed repeatedly in the past. In Korea, tuberculous empyema is also troublesome. If empyema is localized within thick capsule, tube thoracostomy and closed drainage alone is unacceptable, and early open thoracotomy to eliminate the empyema has proved good result. A clinical analysis of 39 patients with thoracic empyema was done. They were managed surgical intervention at Dept. of Thoracic & Cardiovascular Surgery at Kyung-Hee University Hospital from Jan. 1974 to December, 1984. 1. Age and sex distribution, infancy 9, early childhood 11. late childhood 9, puberty 10. The male to female ratio was 21:18. 2. The highest seasonal incidence was winter [21 cases]. 3. Cardinal symptoms were cough [76%], fever and chill [66%], and dyspnea [40%]. 4. The location of the empyema was right in 27 cases [69%] and 12 cases in left side. 5. The most frequent lesion to predisposing factor was pneumonia [67%]. 6. The commonest organism was Staphylococcus aureus in 15 [38%] cases, and Mycobacterium tuberculosis in 10 cases [26%]. 7. The surgical treatment was performed in all patients. The surgical procedure was closed tube thoracostomy in 25 cases [64%], decortication in 7 cases [18%], pulmonary resection in 4 cases [10%], and decortication with curettage in 2 cases. 8. One patient died from sepsis complicated by lymphoma and in one patient bronchopleural fistula was developed postoperatively.

• Journal of Biosystems Engineering
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• 제27권6호
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• pp.557-564
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• 2002

Corrugated board is an efficient low-cost structure material fur the boxes that are widely used for transporting, storing and distributing goods. Corrugated board is also considered as an orthotropic because the principal material directions are the same as in paperboard. The purpose of this study was to elucidate the principal design parameters of ventilating box through the FEA on the various types of ventilating hole. From the viewpoint of the stress distribution and stress level, the optimum pattern and location of the ventilating hole were vertically oblong, and symmetry position with a short distance to the right and left from the center of front and rear panel. And, the optimum location and pattern of hand hole were a short distance to the top from the center of both side panels, and modified shape to increase the radius of curvature of both side in horizontal oblong. In general, the optimum pattern and location of both the ventilating hole and hand hole based on the FEM analysis were well verified by experimental investigation. It is suggested that decrease in compressive strength of the box could be minimized in the same ventilating hole area under the condition of the length of major axis of ventilating hole is less than 1/4 of box length, the ratio of minor axis/major axis is 113.5∼l/2.5, and number of the ventilating holes is even and symmetrical.

• 대한전기학회논문지:시스템및제어부문D
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• 제53권5호
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• pp.374-379
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• 2004

This paper proposes an algorithm for human sensibility evaluation using 4-channel EEG signals of the prefrontal and the parietal lobes. The algorithm uses an artificial neural network and the multiple templates. The linear prediction coefficients are used as the feature parameters of human sensibility. Comfortableness for chairs and temperature/humidity are evaluated. Many conventional researches have emphasized that a wave of left prefrontal lobe is activated in case of positive sensibility and that of right prefrontal lobe is activated in case of negative sensibility. So the power ratio of a wave is obtained from FFT computation and the results are compared. The results of the comfortableness evaluation for temperature and humidity showed that the outputs of the proposed algorithm coincided with corresponding sensibilities depending on the task of the temperature and the humidity. The . conventional method using a wave is hardly related with comfortableness. And it is also observed that the uncomfortable state due to the high temperature and humidity can be easily changed to the comfortable state by small drop of the temperature and the humidity. It seems to be good results to get 66.7％ of evaluation performance in spite of using EEG and the subject independent approach.

• 한방재활의학과학회지
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• 제18권1호
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• pp.141-151
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• 2008

Objectives : The purpose of this study was to investigate effects of long-term taxi driving posture on the balance of musculoskelectal system. Methods : The author practiced Moire topography by using IBS-2000 for 30 male taxi drivers and general people. Then we measured difference of contour lines, difference of shoulder joint height, interval between vertical baseline of pelvis and vertical baseline of neck, ratio of thoracic curve and lumbar curve, difference of width between right and left through Moire topography. After we statistically analyzed difference of Moire topography's data between long-term employed male taxi drivers and general people. Results : 1. Taxi drivers, difference of contour lines in scapular, lumbar, gluteal region was bigger than general people and significant difference(p<0.05) was observed between subject group. 2. Taxi drivers, diference of shoulder joint height was more large than general people and significant difference(p<0.01) was observed between subject group. 3. Taxi drivers, diference of interval between vertical baseline of pelvis and vertical baseline of neck was more large than general people and significant difference((p<0.05) was observed between subject group. 4. Taxi drivers, ratio of thoracic curve was more large than general people and ratio of lumbar curve was more less than general people and significant difference(p<0.05) was observed between subject group. Conclusions : According to above results long-term taxi driving posture might cause musculoskelectal system unbalance.

• 대한한방내과학회지
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• 제30권1호
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• pp.129-143
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• 2009

Objective : This study was aimed to investigate the general features and differences between obesity and skinniness of patients with Bell's palsy. Methods : We measured the sex, age. BMI. pulse diagnosis and HBGS (House-Brackmann Grading System) of 234 patients who were diagnosed with Bell's palsy. Results and Conclusions : The results with statistical significance were as follows (1) The distribution of age revealed that 40s was the most at 30.8 %: (2) The improvement period in facial palsy patients with sub-paralysis was shorter than whole-paralysis. And in one part the more we treated, the shorter the improvement period was: (3) In distribution of fat rate in facial palsy patients, obesity was the most at 61.37%, low weight 15.88%. So we found that the fatter the patients was. the higher the onset rate was: (4) In distribution of pulse diagnosis in facial palsy patients with obesity. the ratio of Xu mai (虛脈) was 67.06%. Shi mai (實脈) 32.94%. The Xu mai was similar to Qi xu (氣虛). So we found that the facial palsy patients with obesity were more Qi xu than with low weight. In distribution of pulse diagnosis in facial palsy patients with skinniness, the ratio of Chi mai (遲脈) was none. Shuo mai (數脈) was most: (5) In distribution of region in facial palsy patients with obesity-Xu mai. the ratio of left was 45.10%, right 54.90%, but this result was not statistically significant.

• 대한두경부종양학회지
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• 제5권1호
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• pp.39-46
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• 1989

기무라씨 질환은 특히 두경부 부위에 피하 종괴를 일으키는 만성염증성, 증식성 질환이다. 저자들은 최근 치험하였던 본 질환 5 예를 한국외과 문헌에 처음으로 보고하는 바이다. 기무라씨 질환은 크게는 ALHE(Angiolymphoide Hyperplasia with Eosinophilia) 의 범주에 속한다. 본 질환의 병리학적 특징은 증식된 lymphoid follicles, eosinophilic infiltration 과 혈관의 증식성이다. 이 질환은 이하선, 악하선 및 상부 경부 부위등에 흔히 종괴를 일으키며 이들 종괴들은 피하조직 뿐만 아니라 타액선과 상부 경부 임파선에까지도 파고 든다. 저자들의 증례 중 한명에서는 서혜부에 종괴가 있었으며 새로이 증식된 혈관과 동상들 (Sinusoids) 로 인하여 혈관 분포가 매우 풍부하였다. 저자들 증례 5 명의 평균 연령은 35세이었지만 한명을 제외한 나머지 모두는 38세 이하이었다. 남녀비는 3:2 이었으며 증상의 평균 기간은 5.2 년이었다. 전례에 있어서 말초 혈액 소견상 Eosinophilia 가 있었다. 전례에서 다발성 종괴들을 보였으며 가끔은 대칭적이기도 하였다. 저자들이 시행한 치료 양상은 수술만 시행한 경우와 수술 및 스테로이드 홀몬요법 시행 경우가 각각 1례씩이었고 수술과 방사선조사 경우가 2례이었으며 나머지 1례에서는 수술, 스테로이드 홀몬요법 및 방사선조사의 복합치료를 실시하였다. 저자들은 기무라씨 질환과 ALHE 질환과의 관계를 고찰해 보았으며 기무라씨 질환의 치료 경험을 보고하는 바이다.

• Journal of Yeungnam Medical Science
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• 제3권1호
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• pp.33-39
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• 1986

1983년부터 1986년까지 약 3년간 영남대학병원에서 검사한 대장 직장암에 대해 조사한 결과 는 다음과 같다. 1. 호발연령은 60대이고 남녀비는 1.6:1이었다. 2. 발생부위별로 보면 직장이 65%를 차지하였다. 3. 주된 증상은 우측 결장경우 통증, 종물촉지, 배변습성의 변화의 순서로 많았고 좌측 결장 경우 통증, 배변습성의 변화, 혈변의 순서로 많았고 직장은 혈변, 배변습성의 변화, 통증의 순서였다. 4. 유병기간은 1~3개월이 가장 많았다. 5. 가장 흔한 조직학적 유형은 선암이었고 분화도는 고도의 분화도를 가진 경우와 중등도의 분화도를 가진 경우가 비슷하게 많았다. 6. 종양의 단체별 분류에서 Duke C가 가장 많았다. 7. 수술방법은 Mile씨 수술이 가장 많았다. 8. 합병된 대장 직장의 병변으로는 용종이 많았다. 9. 수술 합병증은 창상감염이 많았다.

• 인간식물환경학회지
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• 제22권4호
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• pp.355-364
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• 2019

This study was conducted to find out the effects of agro-healing activities and strolling on the physiological conditions of patients with chronic metabolic diseases. A total of 11 subjects participated in agro-healing activities, and their average age was 49.6±11.3. Changes in their salivary cortisol were compared and analyzed before and after participating in the agro-healing activity program, and it was found that the stress hormone decreased after participating in the program. Differences in brain wave between before and after participating in agro-healing activities and strolling were measured, and the ratio of alpha to high beta (RAHB) of subjects increased in most of the measured points after participating in agro-healing activities. In addition, the increase in the value in the temporal lobe (T3) that controls mortor skills and occipital lobe (O2) that controls visual functions indicates that the activities were effective in improving relaxation and stability. The relative low beta (RLB) power spectrum of subjects also statistically significantly decreased in the right occipital lobe (O2) that controls visual functions, the relative mid beta (RMB) and relative high beta (RHB) power spectrum decreased in the left temporal lobe (T3) and the right occipital lobe (O2). These results indicate that the activities were effective in improving relaxation under no stress and tension. The systolic and diastolic blood pressure of subjects after participating in agro-healing activities decreased from the prehypertension level to the normal level. These results indicate that horticultural activities and visual elements in healing farms, such as agro-healing activities and strolling, have positive impacts on patients with chronic metabolic diseases accompanied with diabetes or high blood pressure by increasing the brain activity and psycho-physiological conditions of participants.