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연속형 및 혼합이산형 최적설계법에 의한 농업용 수로교 교각 및 교대의 최적설계
김종옥,박찬기,차상선,Kim, Jong-Ok,Park, Chan-Gi,Cha, Sang-Sun 한국농공학회 2010 한국농공학회논문집 Vol.52 No.6
This study was conducted to find out the best optimum design method for the design of reinforced concrete agricultural aqueduct abutment and pier structures. The mixed-discrete optimization and continuous optimization method were applied to the design of reinforced concrete agricultural aqueduct abutment and pier and the results of these optimization methods were compared each other. It is proved that mixed-discrete optimization method is more reliable, efficient and reasonable than continuous optimization method for the optimum design of the reinforced concrete agricultural aqueduct abutment and pier.
김종옥,Kim, Jong-Ok 한국농공학회 2004 한국농공학회논문집 Vol.46 No.2
This study was carried out to find out the reasonable optimum design method for the design of prestressed concrete structures. The optimum design problems were formulated and computer programs to solve these problems were developed. To test the reliablity, efficiency, possibility of application and reasonablity of optimum design problems and computer programs, both continuous optimization method and mixed-discrete optimization method were applied to the design of prestressed concrete composite girder and application results were discussed. It is proved that mixed-discrete optimization method is more reliable, efficient and reasonable than continuous optimization method for the optimum design of prestressed concrete structures.
김종옥,양보성,김혜수,이종민,이동호,신소영,강창석,이혜경,Kim, Jong-Ok,Yang, Bo-Seong,Kim, Hye-Soo,Lee, Jong-Min,Lee, Dong-Ho,Shin, So-Young,Kang, Chang-Suk,Lee, Hye-Kyung 대한세포병리학회 2006 대한세포병리학회지 Vol.17 No.2
The diagnosis of papillary thyroid cancer is generally based on the findings of intranuclear cytoplasmic inclusions and nuclear grooves. Although anisokaryosis and poikilokaryosis, in papillary thyroid cancer, are not distinct when compared to other cancers, cytological examination can provide useful preoperative information. Our study evaluated the diagnostic role of computer-assisted image analysis for the pre-surgical assessment of papillary thyroid carcinoma. Thyroid aspirates from twenty female patients who were histologically confirmed to have both papillary carcinoma and benign nodules were studied. Different populations of 50 benign cells and 50 malignant cells were analyzed. Five morphometric parameters were selected for analysis: nuclear area, perimeter, maximum length, maximum width and intensity standard variation. The values obtained for papillary carcinomas were higher than the surrounding benign nodules as follows: nuclear area 63.5 vs. 36.1 (p=0.000), nuclear perimeter were 29.4 vs. 22.0 (p=0.000), maximum length 9.6 vs. 7.1 (p=0.000), maximum width 8.2 vs. 6.3 (p=0.000), the ratio between maximal length and maximal width 1.16 vs. 1.13 (p=0.000), the standard variation of intensity 14.9 vs. 15.9 (p=0.101) respectively. Therefore, morphometric information can be helpful for the differential cytological diagnosis of papillary thyroid carcinoma.
농업용 철근콘크리트 구조물의 합리적인 최적설계 -수로교 상부구조물-
김종옥,박찬기,차상선,Kim, Jong-Ok,Park, Chan-Gi,Cha, Sang-Sun 한국농공학회 2010 한국농공학회논문집 Vol.52 No.5
This study was conducted to find out the reasonable optimum design method of agricultural reinforced concrete structures. Selected design variables are the dimension of concrete section, reinforced steel area, and objective function is formulated by cost function. To test the reliability, efficiency, possibility of application and reasonability of optimum design method, both continuous optimization method and mixed-discrete optimization method were applied to the design of reinforced concrete superstructure of aqueduct and application results were discussed. It is proved that mixed-discrete optimization method is more reliable, efficient and reasonable than continuous optimization method for the optimum design of reinforced concrete agricultural structures.
식민지시대 한 · 중 · 일 시각매체 분석을 통한 ‘제국’이미지 비교연구 - 기록화, 일러스트, 만화를 중심으로
김종옥(Kim, Jong-Ok) 한국만화애니메이션학회 2021 만화애니메이션연구 Vol.- No.62
본 논문은 식민지시대 ‘제국’ 이미지 비교연구를 기록화, 일러스트, 만화를 중심으로 연구한 것이다. 이 연구의 목적은 한 · 중 · 일 3국의 시각매체 자료를 기반으로 식민지시대 표현된 ‘제국’ 이미지를 비교 연구하여, 한국 근현대사에 대한 비판적 시각을 견지하며, 제국주의 일본과 동아시아 국가 간의 침략과 저항의 역사를 통합적 시각으로 재조명하고자 한 것이다. 19세기 말에서 20세기 초 세계는 서구열강들의 식민지 건설을 위한 제국주의 확장의 시대였다. 강력한 군대를 앞세운 침략과 전쟁 그리고 경제적 수탈은 아시아에까지 이어졌고, 가장 먼저 서구식 자본주의 근대화를 받아들인 일본은 아시아에서 제국주의 패권 정책을 주도했다. 또한 이 시기는 식민지 획득을 위해 침략의 정당성을 ‘야만의 나라에 서구문물을 통해 근대국가를 형성하게 하는 문명개화의 새 시대’로 선전하였고, ‘문명(일본)’의 타자상인 조선과 청의 이미지로 ‘미개(未開)’와 ‘야만’이라는 이미지를 생산해냈다. 문맹률이 높았던 20세기 초 시각매체를 통한 이미지 형성은 대중들에게 큰 영향력을 주는 소통 수단이었다. 강력한 효과를 지닌 시각적 이미지들이 식민지배 저항의 수단 혹은 제국주의 이데올로기 유포의 수단으로 많이 사용되었다. 따라서 시각이미지가 활발하게 대중매체를 통해 게재되었던 1900년대 초반 한 · 중 · 일 3국의 ‘만화, 일러스트, 기록화’ 등의 시각이미지 자료를 분석 대상으로 하여 ‘제국’ 이미지에 대한 서로 다른 시선을 비교연구 하고자 한다. 특히 일제의 침략전쟁이 극대화되었던 1930-40년대 시기에 집중하여 분석하였다. 이 연구에서. ‘제국’ 이미지 비교연구는 두 가지 방식으로 진행하였다. 첫째는 ‘제국주의’ 패권적 정책을 수용 및 대응하는 한 · 중 · 일 3국의 서로 다른 시선에 대해 선행연구 등을 기반으로 재정리하였다. 이 과정은 한 · 중 · 일 3국의 시각이미지 분석의 기반이 될 것이다. 둘째는 제국주의 지배권력의 ‘제국의 시선’과 피지배국의 ‘항전’을 재현한 시각이미지 비교연구로 동아시아 맹주를 획책하는 일본의 제국주의적 행보와 이에 저항한 한국과 중국의 항일과 친일의 역사를 다양한 시각매체 분석을 통해 재해석하였다. This study conducted a comparative study of the image of the “empire” through the analysis of visual media of Korea, China, and Japan during the colonial period, focusing on recordings, illustrations, and cartoons. The purpose of this study is to compare and study the image of the "empire" expressed in the colonial era based on visual media data of the three countries of Korea, China, and Japan, to maintain a critical perspective on the modern and contemporary history of Korea, This is to re-examine the history of resistance from an integrated perspective. In the late 19th and early 20th centuries, the world was an era of imperialist expansion for the colonization of Western powers. Aggression, war, and economic exploitation led by a powerful army led to Asia, and Japan, which first accepted Western-style capitalist modernization, led the policy of imperialist hegemony in Asia. In addition, this period promoted the legitimacy of the aggression in order to acquire colonies as" a new era of civilization enlightenment to form a modern state through Western culture in a country of barbarism", and the image of Chosun and Cheong, the other merchants of "civilization (Japan)". It has produced images of "unknownness" and "barbarity". In addition, image formation through visual media in the early 20th century, when the illiteracy rate was high, was a means of communication that had a great influence on the public. Visual images with strong effects were often used as a means of resistance to colonialism or dissemination of imperialist ideology. Therefore, in the early 1900s, when visual images were actively published through mass media, visual image data such as "manga, illustration, and documentary" of the three countries of Korea, China, and Japan were analyzed to give different perspectives on the image of the "empire". I want to do a comparative study. In particular, the analysis focused on the period of the 1930s and 40s, when the Japanese colonial invasion war was maximized. In this study, a comparative study of the “empire” image was conducted in two ways. First, the different perspectives of the three countries of Korea, China, and Japan that have accepted and responded to the “imperialism” hegemonic policy were reorganized based on prior studies, etc. This process will be the basis for the analysis of visual images of the three countries of Korea, China and Japan. Second, a comparative study of visual images that reproduced the "imperial gaze" of the imperialist dominant power and the "controversy" of the dominated nations, and the history of Japan"s imperialism and the anti-Japanese and pro-Japanese history of South Korea and China that resisted it. Reinterpreted through analysis of various visual media.
저수지(貯水池) 취수탑(取水塔)의 최적설계(最適設計)에 관한 연구(硏究)(I) - 허용응력(許容應力) 설계법(設計法)을 중심(中心)으로 -
김종옥 ( Kim Jong Ok ),고재군 ( Koh Chae Koon ) 한국농공학회 1988 韓國農工學會誌 : 전원과 자원 Vol.30 No.2
The purpose of the present study is to set up an efficient optimum design method for the large-scale reinforced concrete cylindrical shell structures like intake tower of reservoir and to establish a solid foundation for the automatic optimum structural design combined with finite element analysis. The major design variables are the dimensions and steel areas of each member of the structures. The construction cost which is composed of the concrete, steel, and form work costs, respectively, is taken as the objective function. The constraint equations for the design of intake-tower are derived on the basis of the working stress design method. The corresponding design guides including the standard specification for concrete structures have been also employed in deriving the constraint conditions. The present nonlinear optimization problem is solved by SUMT method. The reinforced concrete intake-tower is decomposed into three major substructures. The optimization is then conducted for both the whole structure and the substructures. The following conclusions can be drawn from the present study. 1. The basis of automatic optimum design of reinforced concrete cylindrical shell structures which is combined with finite element analysis was established. 2. The efficient optimization algorithms which can execute the automatic optimum desigh of reinforced concrete intake-tower based on the working stress design method were developed. 3. Since the objective function and design variables were converged to their optimum values within the first or second iteration, the optimization algorithms developed in this study seem to be efficient and stable. 4. The difference in construction cost between the optimum designs with the substructures and with the entire structure was found to be small and thus the optimum design with the substructures may conveniently be used in practical design. 5. The major active constraints of each structural member were found to be the tensile stress in steel for slab, the minimum longitudinal steel ratio constraints for tower body and the shearing stress in concrete, tensile stress in steel and maximum eccentricity constraints for footing, respectively. 6. The computer program developed in the present study can be effectively used even by an unexperienced designer for the optimum design of reinforced concrete intake-tower.
농업구조물의 최적설계안 선정, 안전진단 및 개보수를 위한 시스템 개발
김종옥 ( Kim Jong Ok ),윤광식 ( Yoon Kwang Sik ),고만기 ( Ko Man Gi ),김기동 ( Kim Ki Dong ),최진용 ( Choi Jin Yong ),김한중 ( Kim Han Joong ) 한국농공학회 1998 한국농공학회 학술대회초록집 Vol.1998 No.-
A study was conducted to develope a system for optimum design, safe appraisal and repair works on agricultural structures. Locations of structures were identified using GPS and imbedded into GIS data base with related information. A graphical program assisting ensile field investigation of typical agricultural structural problems such as fractures and cracks of members was developed. Typical rehabilitation methods were coded for data base development. Optimum design programs for several structures were developed and CAD program which automatically draw draft was also developed.
'컴퓨터 매개 커뮤니케이션(CMC)에서의 집단 응집성 인식 방법론ʼ
김종옥(Jong Ok Kim),권오병(Ohbyung Kwon) 한국전자거래학회 2011 한국전자거래학회지 Vol.16 No.2
'상황인식컴퓨팅? 은 환경에 대한 시의적절한 반응을 위해 필요한 정보를 자동적이고 효율적으로 인식하기 위한 연구 분야로서 안전, 상거래, 의사결정지원시스템 등 다양한 영역에서 응용되고 있다. 이러한 응용분야 중 상당수는 개인 차원뿐 아니라 집단 수준의 상호작용도 지원해야 한다. 효과적인 집단 상호작용을 위해서는 집단 역학과 같은 특수 현상을 고려해야 하며 이를 위해서는 역할, 갈등, 권력, 규범 등과 같은 집단의 속성을 정확하게 파악해야한다. 그러나 지금까지의 상황인식컴퓨팅은 개인 상황에 집중되어 있고, 집단만이 가지는 고유한 상황 정보에 대한 인식 연구는 그 필요성에도 불구하고 많이 않다. 따라서 본 연구의 목적은 집단 상황(group context)을 자동으로 인식하는 방법을 새롭게 제안하는 것이다. 특히 본 논문에서는 집단 응집성의 인식에 집중하고자 한다. 이를 위해 물리적 센서(physical sensors) 또는 논리적 센서(logical sensors) 로 측정 가능한 요소를 활용한 사례기반 추론방법을 제안하였다. 본 논문의 방법론의 적용 가능성을 보이기 위해 실험을 실시하여 기존의 집단 응집성 측정 방법과 비교하여 성능을 검증하였다. Context-aware computing aims to enable the on-line applications and services to be executed in a timely and automated manner. Many of such applications and services involve group-level interactions. For more smoothing communication within a community, specific group-level issues such as group dynamics must be considered. To do so, obtaining group-level contexts such as the role, conflict resolution and norms, are key ingredients to improve group performance. Since group context is not the same as a simple summation of individual context, as group is not just a simple set of individuals, awaring individual context is not sufficient for group-level communication support. However, context-aware computing research still has stressed more on individual context. This leads us to the motivation of searching for group context aware method. Hence, the of this paper is to propose a novel methodology which automatically recognizes group context Especially, we focus on group conhesiveness in this paper just because group cohosiveness is one of the important variables to control the performance of group interaction. To verify the applicability of the proposed method, an empirical test has been conducted to compare the performance of the proposed methodology with that of conventional methods.