혼수상태의 외상환자에서 초음파를 이용한 흉부 및 복부손상의 진단

임경수,이강현,이진웅,이부수,황성오,유수영,강성준 대한응급의학회 1995 대한응급의학회지 Vol.6 No.1

The need for rapid diagnosis and treatment of life-threatening thoracic and intra-abdominal injury result in controversy over the appropriate triage of unconscious blunt trauma patients. To aid in early decisions for these patients, a prospective analysis of 98 patients with glasgow coma scale(GCS) scores≤8 was undertaken. Although intra-thoracic and intra-abdominal injuries were frequently identified based on systolic blood ressure, the use of clinical signs alone resulted in more missed injuries than did using the emergency ultrasonography. In normotensive patients(n=34), intra-thoracic injuries was identified in one patient(2.9%), and intra-abdominal injuries were in 7 patients(20.6%). In shock(systolic blood pressure<90mmHg) Pa-tients(n=64), thoracic injuries and intra-abdominal injuries were diagnosed in 8(12.5%) and 27 patients(42.3%), thoracic and abdominal combined injuries were identified in 11 patients(17.2%). The sensitivity, specificity, and accuracy of emergency ultrasonography were 96.3%, 91.7%, 94.9%. This study suggests that all unconscious trauma patients undergo immediate emergency ultrasonography to prevent missing life-threatening injuries.

잠수장비와 수중환경에서 나타난 스쿠버 다이버들의 교육불이행

임현수(Lin, Hyun-Soo),강은석(Kang, Eun-Suk) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.5

This study is to follow the studies, which were conducted in Moon island between July and October in 2010. The previous studies, which were conducted by Lim, Hyun-soo and Kang Eun-suk in 2010, studied the current status of education of divers by classifying it into five subjects such as diving science, diving equipment, diving safety, underwater environment, and diving activities through FGI of expert groups. Being aware of the lack of materials about the observation of non-fulfillment of education on diving equipment and underwater environment and interviews, we made visits to the spots where the previous studies were conducted between July 28 and August 2nd to newly add up materials on interviews and questionnaires and analysed the cause and problems of the educational non-fulfillment about diving equipment and underwater environment. The educational non-fulfillment about diving equipment resulted in inappropriate management of equipment and loss of equipment, immature assembly of equipment of equipment, the loss of waist belts, and diving knife"s inappropriate use. The educational non-fulfillment about underwater environment brought about the damage of underwater environment, panic by underwater environment, conflicts with fishing villages, and the problems of trash-littering and defecation.

후두적출자의 의사소통 태도

강수균,박선희,백은아,이현혜,최경희,강은희,박은실 대구대학교 특수교육재활과학연구소 2005 특수교육재활과학연구 Vol.44 No.3

본 연구는 후두적출자의 주된 발성방법과 후두적출 경과 시기에 따른 의사소통 태도를 살펴보고자 하였다. 연구의 대상은 성인 남자 55명으로 후두암으로 인한 후두적출자들로 구성되었다. 이들에게 실시한 의사소통 태도 설문지는 Erickson의 의사소통 태도 척도-수정판(Modified Erickson Scale of Communication Attitudes: S-24)을 본 연구에 맞게 수정 보완하여 사용하였다. 본 연구의 결과는 첫째, 주된 발성방법에 따라서는 인공후두기 사용자와 식도발성자간의 의사소통 태도에 차이가 없었다. 둘째, 후두적출 경과 시기에 따라 10년 초과된 후두적출자들과 10년 이하의 후두 적출자들 간의 의사소통 태도에 차이가 없었다. 그러므로 이들의 의사소통 태도의 긍정적 태도를 증가시키기 위하여 다양한 방법을 활용하고 습득하여 이들의 의사소통 능력을 빠르게 재습득 하여 긍정적인 의사소통 능력을 가질 수 있도록 해야 한다. The purpose of this study was to determine laryngectomee's communication attitude. 55 laryngectomees, who were in the range of 40 years old to 80 years old participated in the study. Communication attitude measurements were taken by S-24(Modified Erickson Scale of Communication Attitudes). The results showed as follows: First, score of laryngectomees with artificial larynx and esophageal speakers were no significant. Second, score of laryngectomees with over 10 years after latyngectomy and 10 years after latyngectomy were no significant.

원시적 지속성 삼차신경동맥 동맥류 : 증례보고 A Case Report

강현승,한대희,권오기,오창완,정희원,최길수 대한신경외과학회 1997 Journal of Korean neurosurgical society Vol.26 No.5

Back-Propagation Algorithm 상에서의 성능에 미치는 Parameters 분석에 관한 연구

강수연,박찬호,이현수 慶熙大學校 1994 論文集 Vol.23 No.-

신경망에서 가장 많이 사용되고 있는 알고리즘 중의 하나가 역전파(Back-Propagation) 알고리즘이다. 역전파 알고리즘에서 문제해결에 본질적인 영향을 주는 몇가지 요인들이 존재한다. 본 연구에서는 이 몇가지 요인들이 각각의 응용 문제의 해를 얻는데 미치는 영향을 시뮬레이션 결과를 통해 알아보고 이를 분석및 고찰 하였다. 고려 대상의 요인들로써는 learning rate, momentum, weight 초기값, 은닉 유니트수를 들 수 있다. 응용 문제 대상은 XOR 문제와 8*8 dot alphanumeric font 학습으로 하였다. Back-Propagation is one of algorithms that are currently used in neural network. It has some factors that basically affect on solving problems. On this paper, we analyze and investigate several learning parameters that effect on solutions of each application problems through simulation result. Considered factors are learning rate, momentum, initial weight values and the number of hidden units. Applied problems are XOR learning and 8*8 dot alphanumeric font learning.

골격성 Ⅱ급 성인 부정교합자에서 혀와 두개안면골격 및 악간공간과의 상관관계에 관한 연구

강현희,박수병 대한치과교정학회 1999 대한치과교정학회지 Vol.29 No.5

골격성 Ⅱ급 부정교합자 중 성장이 완료되었다고 생각되는 만 18세 이상의 여자 37명, 만 20세 이상의 남자 23명을 선정하여 정상 성인의 안면비를 기준으로 hyperdivergent group(n=30)과 hypodivergent group(n=30)으로 나누어 두부 방사선 규격사진의 투사도를 작성하였으며 두개안면골격 및 혀의 크기, 높이 그리고 자세를 나타내는 항목을 계측하였고, 두 군간의 차에 대한 유의성 검정 및 혀와 두개안면골격 그리고 악간공간 사이의 상관관계를 조사하여 다음과 같은 결론을 얻었다. 1. 두 군의 혀와 악간공간의 계측항목 비교시 악간공간에 대한 혀의 면적비(TS/IS)는 hyperdivergent group에서 더 크게 나타났으며, PIH(posterior intermaxillary height)와 IS(intermaxillary space)는 hypodivergent group에서 더 크게 나타났으나 혀의 높이와 자세를 나타내는 항목에서는 두 군간에 유의할 만한 차이가 없었다. 2. 혀와 두개안면골격의 상관관계 비교시 두 군 모두에서 혀의 면적(TS), 길이(TGL) 그리고 높이(TH)를 나타내는 계측 항목이 전안모고경(AFH)과 가장 높은 상관관계를 나타냈으며, 또한 hypodivergent group에서는 후안모고경(PFH)과도 높은 상관성을 보였다(p<0.01). 3. 혀와 악간공간의 상관관계 비교시 두 군 모두 혀에 관한 대부분의 항목(H-P제외)이 악간공간(IS)과 가장 높은 상관성을 보였으며, 혀의 높이(TGH)와 면적(TS)을 나타내는 항목은 악간공간의 AIH 및 PIH와 높은 상관성을 보였다(p<0.01). This study was designed to evaluate the correlations between tongue with skeletal pattern and intermaxillary space in Class Ⅱ malocclusion adult patients. Craniofacial skeletal pattern was analyzed on the lateral cephalometric radiograph and the subjects were devided two groups by facial ration, the 30 subjects of hyperdivergent group and the 30 subjects of hypodivergent group. The size and posture of tongue and intermaxillary space were measured on the lateral cephalometric radiograph. These data were statistically analyzed to examine significant differences between both groups and compared the correlation between tongue with skeletal measurements and intermaxillary space in each group. The results of this study were as follows.: 1. In comparison of the tongue and intermaxillary space, the measurement of TS/IS showed significantly larger in hyperdivergent group and PIH and IS showed significantly larger in hypedivergent group. There were no statistically significant differences in the measurements of the height and posture of tongue. 2. In correlation between tongue with craniofacial skeletal measurements. the length and height of tongue showed the highest correlation with AFH(anterior facial height) in both groups(p<0.01). And that measurements showed high correlation with PFH(posterior facial height) in hypodivergent group. 3. In both groups, most measurements of tongue showed high correlation with intermaxillary space and the height and space of tongue showed high correlation with AIH and PIH(p<0.01).

연구개의 이소성 뇌조직 - 1예 보고-

최현주,이연수,김영신,이교영,강창석,심상인 대한병리학회 1998 Journal of Pathology and Translational Medicine Vol.32 No.11

저밀도 폴리에틸렌에서 불순물 혼합량에 따른 트리진전과 방전펄스와의 관계 연구

姜道烈,朴懷俊,金正洙 弘益大學校 1982 弘大論叢 Vol.14 No.2

It is well known that, when enough high voltage is applied to a high-voltage cable with an insulator, treeing phenomenon can occur due to void or impurities such as dust, metal powder, etc. inside the insulator. Also,it is known that this treeing phenomenon drastically shortens the life of the insulator. In this paper, we investigate the effects of the mixture ratio of impurities to the Low-Density Polyethylene used as an insulator on the treeing phenomenon based on the electrical characteristics. As impurity samples, Al₂O₃ and SiO₂with the particle diameter of 44μm have been used for different weight mixture ratios of 1%, 5%, and 10%, respectively. Since the treeing phenomenon occurring in the sample, based material of Low-Density Polye thylene mixed with 1% impurity can easily be observed with an optical microscope, we have first investigated the relationship between the result measured from electrical characteristics and the one obtained from observation with an optical microscope. Specifically, it has been found that the total number of pulses measured from the eletrical waveform of the treeing phenomenon is closely related with the growth length of the tree observed with an optical microscope. Based on these results, the growth length of the tree for the other sample materials with 5% and 10% impurities could be estimated from the total number of the electrical tree pulses for these sample materials, respectively. As a result, it has been found that the effect of the treeing phenomenon decreases as the mixture ratio increases. Also, it is shown that the total number of the electrical tree pulses makes it possible to predict the effect of the treeing phenomenon without observing with an optical microscope.

Rat의 복강내에 투여한 5-fluorouracil-polyglycolic acid 제형이 장기에 미치는 영향에 관한 연구

강대영,송규상,최정목,노승무,정경수,오정연,김진향,양준묵,최선웅,이진호,조준식,민병무,김용백,김창식,박근성,김승영,김학용,인현빈 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1

For more effective intraperitoneal chemotherapy, the authers made 5-fluorouracil-polyglycolic acid composite disks(FU-PGA disks) with 5-fluorouracil and polyglycolic acid, a biodegradable polymer. We inserted the FU-PGA disk into the peritoneal cavites of Sprague-Dawley male rats, the control and three experimental groups; one FU-PGA disk insert group(300mg/kg), two FU-PGA disk insert group(600mg/kg), and three FU-PGA disk insert group(900mg/kg). The control group received a similar number of PGA disk inserts. A pharmacokinetic study was performed to measure the 5-fluorouracil concentration in the peritoneal fluid, blood, and tissues(liver, kidney and heart) at 24 hours, 72hours and 168 hours after insertion of the FU-PGA disk. Light and electron microscopic studies were done. The results were as follows: 1) The number of white blood cells and platelets decreased after FU-PGA insertion. The degree was proportional to the duration and amounts inserted. The change in the number of red blood cells varied slightly. 2) Light microscopically, slight changes were noted at 168 hours in the 3 disk insert group (900mg/kg). Mild fatty change and hepatocyte degeneration around the central veins of the liver were noted, with vacuolar degeneration in the proximal convoluted tubules of the kidney. 3) Electron microscopically,the liver showed focal increases of lipid droplets in the hepatocytes, and irregular nuclear membrane with focal nucleolar segregation of the fibrillar and granular elements. Also the double membranous structure of the hepatocytes and Kupffer cells was widened with bleb formation. The kidney showed wide separation of the nuclear double membrane in the proximal convoluted tubular cells and mesangial cells, with vacuolation and myelin figure formation in the mitochondria of the proximal convoluted tubular cells, at 72 hours and 168 hours in the 2 to 3 FU-PGA insert groups. The heart showed focal loss of cristae,vacuolation and myelin figure formation in the mitochondria of the 2 to 3 FU-PGA insert groups. In conclusion, despite the large amont of FU-PGA inserted, the histopathological changes in the liver, kidney and heart were slight, and consonant with the very low amount of 5-fluorouracil concentrations detected in the liver, kidney and heart. The above results suggest that the FU-PGA composite can serve as a new device for releasing drugs in a controlled manner and easily targeted to intraperitoneal organs. This device can improve the efficacy of intraperitoneal chemotherapy for gastric cancer.

Nonlinear Programming을 이용한 總括在庫模型의 構築

姜賢洙 충남대학교 경상대학부설 경영경제연구소 1991 경영논집 Vol.7 No.2