Linear Combination Analysis Using GPS Data

Park, Woon-Yong,Lee, Dong-Rak,Back, Ki-Suk,Hong, Jung-Soo 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.28 No.2

We can process and compute the position, velocity and time by satellite signals of GPS. The signals are used to compute positioning of three dimensions and timing offset of the receiver clock when we can track the tour satellite signals at least. One of the specified aims is to use less expensive single frequency code/carrier phase GPS receivers, which are typically around half the price of dual frequency receivers. In the study, the author analyzed the accuracy and applicability of frequence linear combination using triangulation points evaluated distance limitation.

발열이 있는 호중구 감소증 환자에서의 위험도 예측인자

정중식,권운용,김규석,임용수,이중의,서길준,윤여규 대한응급의학회 2000 대한응급의학회지 Vol.11 No.3

Background: Most febrile neutropenic patients are treated in an aggressive manner. However, identification of low-risk patients may enable clinicians to administer risk-based treatment. The object of this study is to certify the factors associated with increased risk at the time of visiting the emergency department. Methods: This is a retrospective study. We reviewed the medical records of 101 febrile neutropenic patients who had visited the emergency department of Seoul National University Hospital from January 1998 to August 1999. We assumed 22 risk prediction factors that could be assessed at admission to the emergency department and 5 factors that could be assessed during treatment course. To find independent risk-prediction factors, we analyzed these factors respectively by using multiple regression analysis. Results: Tachycardia(aOR=136.5), altered mentality(aOR=28.8), decreased renal function(aOR=20.1), and significant comorbidity(aOR=17,2) are the independent factors associated with higher mortality. Altered mentality(aOR=31.6) and decreased renal function(CCr < 75㎖/min, aOR=5.4) are those associated with a higher incidence of septic shock. Independent factors associated with persistent(more than 3 days) fever are the early(within 10 days) onset of fever after last chemotherapy(aOR=8.8) and the existence of new pulmonary infiltrates on a simple chest X-ray(aOR=4.3). Conclusion: The stability of vital signs, the change of mentality, the renal function, the existence of significant comorbidity, the existence of new pulmonary infiltrates, and the rate of neutropenia are clinically useful risk-prediction factors in febrile neutropenia at the time of visiting the emergency department.

만화 과제를 이용한 정신분열병 환자의 사회인지 능력의 측정

오정은,나명현,하태현,신용욱,노규식,홍순범,이경진,신민섭,이영호,권준수 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.3

Objectives : This study is to investigate the hypothesis that schizophrenic patients have difficulty in inferring mental state of others. Methods : Twenty schizophrenic patients and twenty normal subjects were administered to the Cartoon Task required inferring the character's intention in a given context. Results : The schizophrenic patients showed a statistically significant impairment in the Cartoon Task. Both groups chose the card depicting a frequent everyday action significantly more rather than the similar card to the last picture in each story for wrong answers. Conclusion : These preliminary results suggest that schizophrenia is associated with a specific deficit of the cognitive ability referred to as social cognition, and this deficit can be detected not only in the acute phase as found in previous research studies, but also in remission. Also when subjects fail to appreciate what is going on in the minds of other people, they seem to rely on a socially familiar experience.

KOMPSAT-1 EOC영상을 이용한 정사영상생성의 정확도 향상

박운용,이현우,정공운 東亞大學校 建設技術硏究所 2001 硏究論文集 Vol.25 No.2

KOMPSET -l(Korea Multi - Purpose SA Tellite-1) Platformed EOC(Electro –Optical Camera) could collect high resolution images of 6.6m during photograph, it possible for get on tilt image on the lean about 45 degrees on satellite body. According as, it has possibility that we take a photographing pair of tilt image about same place from two of different orbits. KOMPSA T-1 sensor of mission is the Korean map drawn on a scale of 1: 25,000 image becoming. Following study, KOMPSAT-1 platformed automate feature extraction and using of stereo satellite image, it certify interpret through reducing influence of sensor, rid of preprocessing, also, we intend to discuss ortho-images production of appropriateness. Because of this study, we conclude to the next in that fact. The case make use of 6, 7, 9 of ground control point evenly spread, 3-D positioning possible about horizontality, verticality of location as a 95% of reliance rate ,in case nine of ground control point, RMSE 6.0752m, 9.8274m. In case of ortho-image RMSE 17.568m, elevation error become 36.82m. Elevation accuracy is inferior as compare with positioning accuracy. Because it analyzed by image matching problem.

자기공명영상을 이용하여 측정한 정신분열병 환자의 상측두회 크기

정운섭,김석현,박용천,남정현,박동우 漢陽大學校 精神健康硏究 1999 精神健康硏究 Vol.18 No.-

우리나라 간암 환자에서의 Cytochrome P450 2E1 유전자의 다형성에 관한 연구

백승운,윤정한,황유진,장유현,이효석,김정룡 大韓消化器病學會 1997 大韓消化器病學會誌 Vol.30 No.4

Anisakis type I 幼蟲에 의한 人體感染 2例

손운목,고원규,설상영,정정명 인제대학교 1991 仁濟醫學 Vol.12 No.3

91년 5월 17일에 上腹部痛을 主訴로 本院을 내원한 2명의 患者에 대하여 胃 內視鏡檢査를 시행하였던 바, 胃 粘膜에 길이로 묻혀 있는 Anisakis 幼蟲을 1마리씩 檢出하였다. 胃 粘膜이 충체를 중심으로 肥厚되어 있었고 肉芽腫性 病巢가 형성되어 있었다. 검출된 충체는 둘다 Anisakis type I 幼蟲이었다. Two cases of gastric anisakiasis caused by Anisakis type I larva were reported. The patients, residing in Pusan, were 66-year-old male and 36-year-old female. They chiefly complained of epigastric pain and recalled they had eaten raw marine fish such as sea eel and bream. Two whitish round worms were found in the hypertrophic and granulomatous mucosa of stomach wall on gastroscopic examinations, and were classified as Anisakis type I larva.

측위 기법별 1등 수준망에 대한 정확도 분석

박운용,안상준,정순룡 東亞大學校 建設技術硏究所 2002 硏究論文集 Vol.26 No.1

Currently, the management of Triangulation-station and Bench-Mark is conducted by National Geography Institute(NGD). In this study, we are measured the official products of First Order Bench Mark and calculated the residual errors which are differences between the official product and results by Static-GPS, TS and PL-1 for same points. Then, we are compared each leveling techniques and analyzed the leveling accuracy. For the result achieved by each measurements, first, we are defined that the PL-1 could obtain higher accuracy than the others but the efficiency is low for taking many time second, TS could obtain low accuracy. We defined that Static-GPS is more economical than TS, PL-1. The efficiency and the accuracy by static-GPS are very high. Particularly, the residual errors for all survey line of NO.3 point are out of allowable error. So, GPS is contributed to the leveling survey for the efficiency, time and cost.

재조합 미생물, Escherichia coli MT201를 이용한 L-Threonine 생산성 향상

하정욱,이만효,김기운,황용일 慶南大學校 附設 基礎科學硏究所 2002 硏究論文集 Vol.16 No.-

의료 및 가축사료용으로 폭 넓은 용도를 지니는 _L-threonine의 대량생산을 위하여 _L-aspartate 생합성계 대사 변이주이며 _L-threonine 생산균주로 개량된 E. coli MT201를 이용하였다. _L-Threonine의 생산성 향상을 위한 일환으로 C. glutamicum으로부터 정제·회수된 pyruvate carboxylase 구조유전자 ORF를 E. coli 발현용 plasmid pTrc99A에 도입하여 plasmid pPC를 제작하였다. 변이주 E. coli MT201 균주에 plasmid pPC를 형질전환법으로 도입하여 과량의 _L-threonine을 생산하는 우수한 재조합 균주인 E. coli MT-pPC을 얻었다. Glucose를 단일 탄소원으로 사용하였을 경우 균체의 생육 및 _L-threonine의 생산량이 감소하는 경향을 보였다. 이를 극복하기 위하여 glucose와 citrate(sodium citrate와 ammonium citrate)를 각각 첨가한 결과 sodium citrate에서 우수한 결과를 flask배양을 통하여 관찰하였다. 적절한 sodium citrate의 첨가 비는 탄소원인 glucose와 sodium citrate의 첨가비가 3.5:1.5일 때 _L-threonine 생산량과 생육이 월등히 향상되었다. 이를 바탕으로 발효조를 이용한 유가배양에서 생산량 75.7g/L를 얻었다. 따라서 본 실험을 통하여 _L-threonine의 생산량이 획기적으로 증가하는 재조합 균주를 개발하였고 생산량도 향상시켰다. _L-Threonine, which is used in the medical field for amino acid infusion and in feedstuff for livestock, is an essential amino acid for man and animals. Microorganisms are genetically bred for industrial production of amino acids including _L-threonine. In this study, Escherichia coli MT201, which was obtained with the view of overproducing for _L-threonine, is the metabolic mutant for a biosynthetic pathway of aspartate family. E. coli MT-pPC was obtained for the improvement of _L-threonine production by introducing plasmid pPC, which is an expression vector for pyruvate carboxylase coding gene(pyc) of Corynebacterium glutamicum ATCC13831 at E. coli MT201 strain. When only glucose was used for carbon source in E. coli MT-pPC, cell growth and _L-threonine production was reduced. For solving this problem, we added glucose and citrates in culture media. From the results, sodium citrate was more effective than ammonium citrate and the optimal ratio, which was the most efficient among those ratio employed here, was the 3.5 : 1.5 of glucose to sodium citrate. In our experiment, _L-threonine production, which was 75.7 g/L for 86 hr by E. coli MT-pPC added with 3.5 : 1.5 ratio of the glucose to sodium citrate in fed-batch culture, and these were higher than 1.2 fold of E. coli MT201 and 3.2 fold of E. coli MT-pPC, respectively, in glucose.

등간격 병진스프링으로 지지되는 단순곡선보의 고유진동수해석

조정래,이용운,윤한익 동의대학교 산업기술개발연구소 2000 産業技術硏究誌 Vol.14 No.-

The transfer matrix method is used to study the influence of the translational spring support on the transverse vibration of the simple curved beam. The translational spring supports are constituted by the middle point and the nine points at regular interval on the curved beam. The influence of the translational spring constants on the natural frequency of the simple curved beam is very much at 1st and 3rd mode and the natural frequency is augmented as increasing of the translational spring constants. Since the amplitude of the curved beam is small at high mode, the translational spring constant has a little influence on the transverse vibration of the simple curved beam. The simple curved beam supported elastically at middle point has high frequency than that supported elastically at nine points at regular interval. If the translational spring constant supporting the simple curved beam become very large, and then since the elastic support is similar to the rigid support, the transverse natural frequencies increase very much at the each mode of the simple curved beam.