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.

갑상샘 유두암종의 세포진단에서 형태학적 계측의 분석

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.

21세기 농업발전을 위한 농업관련기관의 집단화 및 효율적 운영방안 - 충청남도의 예 -

김종옥,김창호 ( Jong Ok Kim,Chang Ho Kim ) 한국농촌계획학회 1996 농촌계획 Vol.2 No.2

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.

한국 가족의 특성

김종옥,Kim, Jong-Ok 대한간호협회 1994 대한간호 Vol.33 No.1

프리스트레스트 콘크리트 구조물의 합리적인 최적설계

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.

관계형 데이터베이스와 지형정보를 이용한 농업구조물의 안전점검 및 이력관리 지원시스템

김종옥 ( Kim Jong Ok ),김한중 ( Kim Han Joong ),이정재 ( Lee Jeong Jae ),고만기 ( Ko Man Ki ) 한국농공학회 2002 韓國農工學會誌 : 전원과 자원 Vol.44 No.3

Most of the agricultural structures are in shortage of feasible facility management because these structures are small in size and spacially distributed in rural area. Inspection tools based on visual inspections are generally used for agricultural structures in most of the countries, including Korea. It is necessary to survey data of the irrigation structures to maintain records, and to develop the interface program by constructing database of inspection data. This study was conducted to develop a system for safe appraisal and repair works on agricultural irrigation structures. Repair and rehabilitation method can be chosen from an optimum viewpoint if the information between the method and life-cycle management cost of agricultural structures is constructed in the database. In this study, the system assisting onsite field investigation and determining the typical rehabilitation method of typical agricultural structural problems such as fractures and cracks of members was developed.

농업용 수로터널의 최적 설계

김종옥 ( Kim Jong Ok ) 한국농공학회 2000 한국농공학회 학술대회초록집 Vol.2000 No.-

In this study, computer program for the optimum design of agricultural aqueduct tunnel was developed. It was shown that even though the starting points and optimization method are different, the objective function and optimum design variables converge to a value within a close range respectively, and consequently the optimum design program developed in this study is reliable and robust. 3D-design drawing can be drawn using automation design computer program developed in this study

'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.

역청재료(瀝靑材料)가 흙-시멘트의 강도(强度) 및 내구성(耐久性)에 끼치는 영향(影響)에 관(關)한 연구(硏究)

김종옥 ( Jong Ok Kim ),정하우 ( Ha Woo Jung ) 한국농공학회 1978 韓國農工學會誌 : 전원과 자원 Vol.20 No.1

This study was intended to investigate the effects of bituminous material content of soil-cement mixtures on their durability. For the purpose, unconfined compressive strength test, Freeze-thaw test, and wet-dry test were performed with three types of soil. Each type of soil was mixed with three levels of cement content and each soil-cement mixture was mixed with four levels of bituminous material content. For the unconfined compressive strength test, Freeze-thaw test and wet-dry test, 324, 108, and 108-specimens were prepared respectively. Unconfined compressive strength was measured at age of 7-days, 14-days and 28-days using 108-specimens in each age. The soil-cement loss rate due to freeze-thaw and wet-dry were calculated after 12 cycles of test using 108-specimens in each test. The results are summarized as follows : 1. Optimum moisture content was increased with increase of cement content, but maximum dry density was changed irregulary with increase of the cement content. 2. The unconfined compressive strength was increased with increase of cement content, bituminous material content and curing age. Cement is more effective factor than bituminous material on unconfined compressive strength of soil-cement Mixture. 3. It is estimated as the most economical cement content that the recommended cement content of A.S.T.M. because increasing rate of unconfined compressive strength at age of 28-days was low when cement content is above the recommanded cement content of A.S.T.M. among all types of soil. 4. Although a portion of cement content is substituted for bituminous material, the necessary unconfined compressive strength can be obtained. 5. The soil-cement loss was more influenced by wet-dry than Freeze-thaw 6. The bituminous material is more effective on the decrease of soil-cement loss than increase of unconfined compressive strength 7. The void ratio of soil-cement mixture was changet irregularly with increase of cement content, but that was decreased in proportion to the increase of bituminous material content. 8. The regression equation between the unconfined compressive strength and soil-cement loss rate were obtained as table 7.