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정현기,황태규,신성희,김철호,이순용 인제대학교 1981 仁濟醫學 Vol.2 No.3
1979년 6월부터 1980년 11월까지 인제의과대학 부산백병원 소아과에 입원하였던 급성열성 피부점막림프적증후군 18예에 대한 임상통계적 관찰을 하였다. 18 cases of MCLS who were admitted to Department of Pediatrics, Inje Medical College, Busan Paik Hospital from June 1979 to November 1980, were observed clinically. The following results were obtained. 1.The disease was prevalent under 2 years of age(77.8%) with predominance in males and the seasonal incidence was high in winter (from November to February) (61%). 2.The chief complaints were prolonged fever and skin rash, and the mean duration of fever prior to admission was 7.8 days. 3.Skin rash was variable; atypical maculopapular rash is present in 7 cases, mobilliform rash in 5 cases, scarlatiniform rash in 1 case, and erythema multiforme-like rash in 2 cases. And one case with the erythema multiforme-like rash was associated with vesicular eruption. 4.CBC findings showed mild anemia (9-11gm%) in 44.4%, leukocytosis (≥ 15,000/mm2) in 33.3%, and ESR (≥ 20mm/hr) in 94.2%. RUA (innings showed transient proteinuria and pyuria in 6 cases, respectively. 5.LFT showed mild elevation of SGOT and SGPT in 3 of 13 cases, 6.EKG showed abnormalities in 5 of 15 cases; 2 cases of atrial fibrillation, 1 case of sinus bradycardia, 1 case of cases tachycardia, and 1 case of atrial flutter. 7.Fever was noticed in all 18 cases. The mean duration of fever was 13.7 days with range of 7-29 days. There was no evidence that higher dosage of aspirin is more effective for shortening of fever, duration. 8.There was no fatal case during this observation and acute encephalopathy and recurrence were noticed in 1 case, respectively.
대각측량 방식을 이용한 실내 측위 정확도 개선에 관한 연구
정현기,박태현,권장우 한국ITS학회 2018 한국ITS학회논문지 Vol.17 No.5
위성항법장치(GPS)를 이용한 위치 추정 방법은 자동차의 내비게이션 시스템을 비롯한 다양 한 분야에서 응용되고 있다. 하지만 GPS 신호는 실내에서 측정이 어려우므로 건물이나 공장과 같은 실내에서 특정 물체의 위치를 파악하기에는 어려움이 많다. 본 연구에서는 이러한 한계 점을 극복하기 위하여 공장 내에서의 물자관리를 위해 저전력 블루투스(BLE) 기반의 객체 위 치 추정하는 시스템을 제안한다. 객체위치 추정 시스템은 블루투스 신호 발생기, 수신기, 그리 고 데이터베이스 서버로 이루어져 있으며 물자에는 BLE를 기반으로 하는 신호 발생기를 부착 하고, 공장 내부에 수신기를 적절하게 배치하여 구성하였다. 또한 본 연구에서 기존의 삼변 측 량법의 오차를 감소시키기 위해 4개의 수신기를 사용하는 4축 측량알고리즘인 “대각측량”을 제안한다. 제안하는 알고리즘은 기존 삼변측량대비 우수한 성능을 보였으며 공장에 시스템을 설치하여 실험을 수행함으로써 본 연구에서 제안하는 시스템과 알고리즘의 실효성을 증명하였다. The method of estimating a position using a GPS has been applied to various fields including a navigation system of an automobile. However, since it is difficult to measure GPS signals indoors, it is difficult to locate specific objects indoors such as a building or factory. To overcome these limitations, this study proposes a system for object location estimation based on Bluetooth5 for the management of materials in factories. The object position estimation system consists of a Bluetooth signal generator, a receiver, and a database server. A signal generator based on Bluetooth Low Energy(BLE) is attached to the material and a receiver is appropriately arranged inside the factory. In this study, we propose “Diagonal Survey Method”, a 4–axis survey algorithm using four receivers to reduce the error of existing trilateration method. The proposed algorithm showed good performance compared to the conventional trilateration and we verified the effectiveness of the proposed system and algorithm by performing the experiment by installing the system in the factory.
Quality Characteristics of White Pan Bread Using Whole Wheat (Triticum aestivum) Flour
정현기,최진상 경상국립대학교 농업생명과학연구원 2019 농업생명과학연구 Vol.53 No.6
Five-color bread was prepared by adding herb powder to Korean whole wheat triticum aestivum flour and the quality of baking was analyzed. The pH of the control bread was 6.15±0.12 while that of the whole wheat flour test group was 6.35±0.11, 6.29±0.12, 6.36±0.12, 6.19±0.11, and 6.01±0.13, respectively. The L value of the control bread was 67.78±0.03 and that of the whole wheat flour test group was 69.66±0.02, 60.01±0.12, 64.23±0.01, 63.34±0.01, and 61.64±0.04, respectively. The water activity was slightly increased at 2 days of storage due to the difference in water absorption and water retention. However, on the third day, the water transfer phenomenon in the bread showed water activity decrease in all wheat flour test groups. On the 1st day of the whole wheat flour test bread, the hardness values were 186.86±4.81, 165.89±3.73, 189.71±3.32, 198.38±2.19, and 184.29±3.40 g/cm2, respectively, and that of the control group was 138.84±3.72 g/cm2. The hardness of the control group and the whole wheat flour test group showed a significant difference. The internal structure of the bread in the whole wheat flour test group (100x, 500x) was not smoother than the control’s. The swelling degree of the starch particles and the cracking of the crumbs were confirmed by the adding of five-colored herbs to whole wheat flour.