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김종률,김민,이재현 한국항해항만학회 2020 한국항해항만학회 학술대회논문집 Vol.2020 No.춘계
최근의 VTS는 관련 제도 · 교육 · 국제협력 등 다방면의 정책을 수립 · 시행하는 한편 지속적인 시스템 구축 · 개량 · 고도화를 추진하는 등 눈부신 성장을 하고 있다. 이에 반해 VTS의 핵심 요소인 ‘선박교통관제사’의 근무환경에 대한 관심 · 개선 노력은 상대적으로 저조한 면이 있다. 이번 기초연구에서는 현 근무환경을 ‘입지 환경, 근무 공간, 보조 공간’ 등 세 가지 분야로 나누어 관제사의 관점에서 분석하고 개선방안을 도출함으로써 교대근무 및 관제업무의 특수성을 고려한 근무환경 조성에 대한 필요성을 개진하고, 이에 대한 관심 환기 및 향후 관련분야의 연구 · 발전에 기여하고자 한다.
Lepromin Reaction과 癩의 病型 病度및 其他에 對하여
金鍾律,盧樂均,金在植,金重明 慶北大學校 醫科大學 1975 慶北醫大誌 Vol.16 No.1
나종양 나(L) 269례, 결핵양 나 (T) 92례, 경계형 나 (B) 2례, 부정형 나 (I) 11례 都合 374例를 對象으 로 Lepromin을 接種하여 다음과 같은 成績을 얻었다. 1. 年令과 Lepromin 반응 (L.R.) L.R. 陰性은 男子에서는 46~50才에서 女子에서는 41~45才에서 가장 많았다. 2. 病期間과 L.R. 病期間의 長短과 L.R. 사이에 特異한 關係는 없었고 L.R. 陰性은 16~20年에 L.R. 陽性은 6~10年과 16~20 年에 많았다. 3. 治療期間과 L.R. 治療期間과 L.R.사이에 一定한 關係는 볼 수 없었고 L.R. 陰性은 1~5年에, L.R. 陽性은 16~20年에 많았 다. 4. 病理 病度와 L.R. a. 病型과 L.R. L型에서는 L.R. 陰性은 85.1%, 陽性이 14.9%, 疑陽性은 없었다. T型에서는 L.R. 陰性이 72.9% 陽性은 27.1% 亦是 疑陽性은 없었다. B型 L.R. 陰性은 2例中1例, 陽性도 2例中 1例였고, I型은 11例中 L.R. 陰 性은-는 10例 L.R. 陽性은 1例였다. 3. 病度와 L.R. L型 男子에 있어서는 病度가 重해짐에 따라 L.R. 陰性이 漸增되고 同時에 L.R. 陽性은 漸減되었으나 女 子에서는 이와 正反對의 現象이었다. T型, B型 및 I型에서는 男女가 모두 L.R. 과 病度와의 사이에 前記 L型과 같은 關係는 없었다. 5. 臨床症狀과 L.R. L.R. 陰性을 보면 結節形成이 82.7%(215/260), 浸潤 83.1%(54/65), 神經痛74.7%(112/150), ENL 73.7%(28/38)이었으며 病期別로는 進行期 96.3%(52/54), 退行期 50.3%(73/145), 靜止期 14.9%(26/175)였 다. 6.其他 男女 性別, 年令, 病期間 및 治療期間等과 L.R.과의 사이에는 一定한 特異的 關係는 없었고 48時間후 L.R.은 2週후 L.R.을 豫示하는 相關性을 볼 수 있었다. The lepromin antigen was injected to 374 cases of leprosy patients and results of lepromin reaction were as follows; 1. The lepromin reaction and the age groups: Most of lepromin negatives were in the age group of 46-50 in the male and were in 41-45 in the female. 2. The lepromin reaction and the disease duration: There was no relation between the duration of the duration of the dasease and lepromin reaction, and lepromin negatives were most frequent among the 16-20 year age group and lepromin positives were most frequent among the 6-10 and 16-20 year age groups. 3. The lepromin reaction and the duration of the treatment: It had no relation between of the treatment and lepromin reaction, and lepromin negatives were most frequent among the 1-5 year age group and lepromin positives were most frequent among the 16-20 year age group. 4. The lepromin reaction, the type and the grade of the disease: In lepromatous type lerpomin negative was 85.1% and the positive was 14.9%, in tuberculoid type lepromin negative was 72.9%, lepromin positive was 27.1%, in borderline group 1 of 2 patients was positive and in indeterminate case 10 of 11 patients were negative and 1 was positive. In the male of lepromatous type, lepormin negative was gradually increasing with the severity of the disease grade while the positive was decreasing, but in the female cases this phenomenon was the opposite. In tuberculoid type, borderline group and indeterminate case, there was no relations between lepromin reaction and the disease grade in sex. 5. The lepromin reaction, clinical signs and symptoms: In lepromin negatives, the nodule formation was present in 82.7%(215/260), the infiltration was 83.1%(54/65), the neuralgia was in 74.7%(112/150) and the ENL was in 73.7%(28/38). By the stages of the disease, the lepromin negatives were present in 96.3%(52/54) of the progressive stage, 50.3%(73/145) of the retrogressive stage and 14.9%(26/175) of the quiescent stage. 6. Miscellaneous: There was no specific relations among the lepromin reaction, sex, age group, disease duration and the duration of the treatment. The lepromin reaction of 48 houre was suggestive of the results of 2nd week's reaction and there was a relationship between 48hours and2nd weeks
하이브리드 유전자 알고리즘을 이용한 다목적 신뢰성 설계
김종률,박월선,이재욱 東西大學校 2001 동서논문집 Vol.7 No.-
A bicriteria reliability apportionment problem for a system consisting n subsystems with time-dependent reliability is manipulated in this paper. This reliability design problem with two objectives determines the optimum level of component reliability and the number of redundant components at each subsystem. The problem is formulated as a bicriteria nonlinear mixed integer programming problem, subject to several design constraints. Also, a hybrid genetic algorithm is used in this paper to find an optimal or near optimal solution and we propose the method which search the Pareto solutions of bicriteria reliability apportionment problems. Furthermore, numerical experiments are illustrated to demonstrate the efficiency of the proposed method.
Scalar curvature comparisons of level hypersurfaces of geodesic spheres
김종률 대한수학회 2018 대한수학회보 Vol.55 No.2
Using the comparison of differential equations involving Ricci and scalar curvatures obtained by Eschenburg and O'Sullivan, the scalar curvatures of level hypersurfaces of geodesic spheres are compared.