• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2010년도 추계학술대회 초록집
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• pp.129.2-129.2
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• 2010

As a part of the government renewable energy policy, KOWEPO is constructing 300MW IGCC plant in Taean. IGCC plant consists of gasification block, air separation unit and power block, which performance test is separately conducted. Overall performance test for IGCC plant is peformed to comply with ASME PTC 46. Major factors affected on the overall efficiency for IGCC plant are external conditions, each block performance(gasification, ASU, power block), water/steam integration and air integration. Performance parameters of IGCC plant are cold gas efficiency, oxygen consumption, sensible heat recovery of syngas cooler for gasification block and purity of oxygen, flow amount of oxygen and nitrogen, power consumption for air separation unit and steam/water integration among the each block. The gas turbine capacity applied to the IGCC plant is 20 percent higher than NGCC gas turbine due to the low caloric heating value of syngas, therefor it is possible to utilize air integration between gas turbine and air separation unit to improve overall efficiency of the IGCC plant and there is a little impact on the ambient condition. It is very important to optimize the air integration design with consideration to the optimized integration ratio and the reliable operation. Optimized steam/water integration between power block and gasification block can improve overall efficiency of IGCC plant where the optimized heat recovery from gasification block should be considered. Finally, It is possibile to achieve the target efficiency above 42 percent(HHV, Net) for 300MW Taean IGCC plant by optimized design and integration.

• 한국과학교육학회지
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• 제31권3호
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• pp.475-489
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• 2011

The purposes of this study were to inform the exemplary models of integrated science and mathematics and to analyze and discuss their similarities and differences of the models. There were two steps to select the exemplary models of integrated science and mathematics. First, the second volume (Berlin & Lee, 2003) of the bibliography of integrated science and mathematics was analyzed to identify the models. As a second step, we selected the models that are dealt with in the School Science Mathematics journal and were cited more than three times. The findings showed that the following four exemplary theoretical models were identified and published in the SSM journal: the Berlin-White Integrated Science and Mathematics (BWISM) Model, the Mathematics/Science Continuum Model, the Continuum Model of Integration, and the Five Types of Science and Mathematics Integration. The Berlin-White Integrated Science and Mathematics (BWISM) Model focused an interpretive or framework theory for integrated science and mathematics teaching and learning. BWISM focused on a conceptual base and a common language for integrated science and mathematics teaching and learning. The Mathematics/Science Continuum Model provided five categories and ways to clarify the extent of overlap or coordination between science and mathematics during instructional practice. The Continuum Model of Integration included five categories and clarified the nature of the relationship between the mathematics and science being taught and the curricular goals for the disciplines. These five types of science and mathematics integrations described the method, type, and instructional implications of five different approaches to integration. The five categories focused on clarifying various forms of integrated science and mathematics education. Several differences and similarities among the models were identified on the basis of the analysis of the content and characteristics of the models. Theoretically, there is strong support for the integration of science and mathematics education as a way to enhance science and mathematics learning experiences. It is expected that these instructional models for integration of science and mathematics could be used to develop and evaluate integration programs and to disseminate integration approaches to curriculum and instruction.

• 한국전자거래학회지
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• 제9권1호
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• pp.39-59
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• 2004

e-비즈니스는 기업활동을 자동화하고 업무시스템 간에 정보소통을 가능하게 하였다. 이러한 자동화와 정보공유는 기업간 환경으로 확장되어, 거래 기업간에 비즈니스프로세스와 교환 메시지를 정의하여 거래과정을 자동화하려는 시도가 발생하였다. 본 연구에서 다루고 있는 기업간 워크플로우 통합은 이러한 시도 중의 하나로서, 기업의 개별적인 워크플로우를 중심으로 추가적인 기업간 활동을 정의함으로써 기업간 비즈니스 프로세스로 확장하는 시스템 통합 방법이다. 본 연구에서는 먼저 워크플로우 통합을 위한 요구사항 및 관련 표준과 통합 기술에 대하여 살펴보고, 이를 바탕으로 기업간 워크플로우 통합을 위한 참조모델을 제시한다. 그리고 관련 표준과 기술을 바탕으로 기업간 워크플로우 통합을 구현하기 위한 세 가지 접근 방법을 제시하였다. 세 가지 접근법은 워크플로우 시스템을 중심으로 상호운영하는 방법, 웹 서비스를 통해 공적 프로세스를 구현하는 방법, 그리고 내부 프로세스와 외부 프로세스를 독립적으로 운영하면서 다중 프로세스를 구현하는 방법이다. 또한, 참조 모델을 바탕으로 각 접근 방법의 구현을 위한 아키텍처를 제공한다. 이러한 연구는 기업간 워크플로우 통합에 대한 기업의 이해를 돕고 관련 표준 및 기술을 활용하여 시스템 통합을 구현하는 데 도움이 될 것이다.

• 한국IT서비스학회지
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• 제11권3호
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• pp.67-87
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• 2012

These days, firms are focusing on the improvement of relationships with business partners. The supply chain integrations are taking critical role in improving the relationships with business partners. In accordance with the development of the IT technology, it became possible for firms not only to integrate inner parts of the organization, but also to integrate the company with other organizations in the supply chain, which is open system. Therefore, in e-Biz environments, it is imperative for firms to strengthen the core capacity through the supply chain integration, and to precisely determine the components of the determinants of e-Business integration which impact the firm performance. This study analyzed determinants that have impacts on business integration in IT capacity perspectives in competetive environments. We analyzed 163 domestic companies to find out many significant suggestive points. First, IT management capacity, process innovation capacity are adopted as determinants of differentiation and competetive edges against competing firms. Second, it is analyzed that the more the companies are in intensified competetive environment, the more likley that the innovation capacity and partner management capacity become the determinants of the business integration of the companies and that they pursue new market development strategy. Third, it is analyzed that the more the companies are in high demand fluctuation, the more likley that the innovation capacity becomes the determinants of the business integration of the companies, and that they pursue new market development strategy and operation efficiency strategy. Last, it is analyzed that the more the companies are Technology dependent, the more likely that IT management capacity and process innovation capacity become the determinants of business integration, and that they pursue new market development strategy and operation efficiency strategy. These results provide us the foundation that the determinants that we have analyzed can impact the supply chain integration strategies which take into account the competetive environments.

• 한국항공우주학회지
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• 제39권7호
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• pp.666-673
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• 2011

최신항공기 개발에서 증가추세에 있는 항공전자 장비들의 효율적인 통합시험 수행을 위 해 통합시험환경구축이 중요한 역할을 하고 있다. 특히 개발기간 최소화 및 신뢰성과 신속한 통합시험수행을 위해 통합시험장비 개발이 필수적이다. 본 논문에서는 수리온(KUH) 임무탑재장비(MEP)의 각 장비별 특성을 분석 후 최적의 통합시험 수행을 위한 장비별 모델개발을 다루었다. 모델은 동작특성에 따라 동적(Dynamic), 행동(Behavior), 연동(ICD) 모델로 구분하였으며 장비의 고장탐구 및 미장착된 장비의 동작특성 모사가 모델링의 주목적이다. 모델은 소프트웨어 단위시험 및 체계 통합시험 두 단계로 나누어 객관적 신뢰성을 검증하였다. 수리온 MEP 통합시험장비(SIL)를 이용하여 개발된 모델을 통합시험에 적용한 결과 설계 목적에 부합됨을 확인하였다.

• 한국전자거래학회지
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• 제9권2호
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• pp.183-201
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• 2004

기업간 협업을 실현하기 위해서는 기업간 프로세스 상호연계 (B2Bi)와 기업 애플리케이션 통합(EAI)이 함께 고려되어야 한다. 이미 많은 영역에서 이에 대한 연구와 개발이 이루어지고 있지만, 두 시스템이 각기 개별적인 플랫폼과 환경하에서 설계되고 운영됨으로써 이 둘을 다시 통합해야 하는 문제가 발생하고 있다. 본 연구에서는 기업간 협업을 위해, B2Bi 환경의 변화에 유연하게 대응하면서도 B2Bi와 EAI 시스템을 단일의 통합 구조로 구현한 비즈니스 통합 플랫폼을 제공하고자 한다. 본 연구의 통합 플랫폼에서는 협업 프로세스가 비즈니스 통합의 주요 기술로 인식되고 있는 웹서비스(Web Services)를 이용하여 진행될 수 있도록 하였다. 특히, 다양한 비즈니스 통합 표준들이 수용될 수 있도록 이들 표준들을 비교 분석하여 기본적 인 실행 요소들을 정의하였으며, 이를 처리할 수 있으면서도 향후 확장성을 가지는 프로세스 엔진을 개발하였다. 또한 이러한 비즈니스 통합 플랫폼의 검증을 위하여 웹수주 시스템을 구현하였다. 본 연구의 결과는 기업간 협업을 위한 비즈니스 통합의 수준을 높이는데 기여할 수 있을 것이다.

• Structural Engineering and Mechanics
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• 제75권5호
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• pp.541-557
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• 2020

A novel family of controllable, dissipative structure-dependent integration methods is derived from an eigen-based theory, where the concept of the eigenmode can give a solid theoretical basis for the feasibility of this type of integration methods. In fact, the concepts of eigen-decomposition and modal superposition are involved in solving a multiple degree of freedom system. The total solution of a coupled equation of motion consists of each modal solution of the uncoupled equation of motion. Hence, an eigen-dependent integration method is proposed to solve each modal equation of motion and an approximate solution can be yielded via modal superposition with only the first few modes of interest for inertial problems. All the eigen-dependent integration methods combine to form a structure-dependent integration method. Some key assumptions and new techniques are combined to successfully develop this family of integration methods. In addition, this family of integration methods can be either explicitly or implicitly implemented. Except for stability property, both explicit and implicit implementations have almost the same numerical properties. An explicit implementation is more computationally efficient than for an implicit implementation since it can combine unconditional stability and explicit formulation simultaneously. As a result, an explicit implementation is preferred over an implicit implementation. This family of integration methods can have the same numerical properties as those of the WBZ-α method for linear elastic systems. Besides, its stability and accuracy performance for solving nonlinear systems is also almost the same as those of the WBZ-α method. It is evident from numerical experiments that an explicit implementation of this family of integration methods can save many computational efforts when compared to conventional implicit methods, such as the WBZ-α method.

• 한국광학회지
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• 제16권3호
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• pp.196-200
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• 2005

[ $0.75delta\%$ ]의 평판광회로(PLC;Planar Lightwave Circuit)소자의 설계 및 제작기술을 가지고 저손실과 높은 누화율을 가진 파장 다중화 및 역다중화 소자를 개발하였다. C-band AWG(Arrayed Waveguide Grating)에서의 삽입손실은 2.503이하, 누화율은 35dB이상, 균일도는 1dB이하이며 L-band에서는 Vernier 디자인을 적용하여 ITU-T의 파장 정확도가 0.04nm이하가 되도록 제작하였다.

• 정보보호학회논문지
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• 제21권2호
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• pp.101-110
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• 2011

최근 Application에 대한 공격을 통하여 네트워크와 데이터베이스에 대한 방어정책인 침입탐지 룰(rule)을 무력화시키고, 침해사고를 유발한다. 이러한 공격으로부터 내부 네트워크와 데이터베이스의 안전성을 확보하기 위한 통합보안에 관한 연구가 필요하다. 본 논문에서는 침입탐지 룰을 설정한 Application에 대한 공격을 차단하기 위한 통합보안 시스템 구축에 관한 연구이다. 네트워크 기반의 공격을 탐지하여 대응하고, 내부 Integration Security System을 Virtual clustering과 Load balancing 기법으로 공격을 분산시키며, Packet 모니터링과 분석을 통하여 공격 목적지 Packet에 대한 방어정책 설정, 공격 Packet 분석, 기록, 룰 업데이트를 한다. 또한 공격 유형별 방어정책을 설정하여 Virtual Machine 분할 정책을 통한 접근 트래픽 해소, 공격차단에 적용하는 Integration Security System을 제안하고 방어를 실험한다. 본 연구 결과는 외부 해커의 공격에 대한 통합보안 방어를 위한 현실적인 자료를 제공하게 될 것이다.

• 대한통합의학회지
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• 제10권1호
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• pp.119-128
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• 2022

Purpose : The purpose of this study was to examine the effects of applying occupational therapy that uses motion recognition on the physical self-efficacy, visual-motor integration ability, and play skills of children who have neurodevelopmental disorder before and after treatment. Methods : This The study chose 16 children with neurodevelopmental disorder as research subjects who were randomly and evenly allocated into an experimental group and a control group. The experiment followed a pretest-posttest design. As an intervention, the experimental group received motion recognition-based occupational therapy and a separate sensory integration program. The control group only participated in the separate sensory integration program. The eight-week experiment duration included 24 intervention sessions where the a 50-minute session was implemented three times a week for eight weeks. To compare the physical self-efficacy, visual-motor integration ability, and play skills before and after the intervention, measurement tools including the Physical self efficacy, Beery VMI-6, and Penn interactive peer play scale were used. All measured variables were analyzed and expressed as mean, standard deviation and percentage. Results : The motion recognition-based occupational therapy demonstrated a significant effect on improving the physical self-efficacy, visual-motor integration ability, and play skills of the experimental group. The intervention also caused a significant difference between the experimental group and control group in terms of the physical self-efficacy, visual-motor integration ability, and play skills. Conclusion : We confirmed the possibility motion recognition-based occupational therapy could be effective in improving the physical self-efficacy, visual-motor integration ability, and play skills for patients who have neurodevelopmental disorder. Based on the study result, further future studies are expected based on this study result that prove the application effect of the motion recognition-based occupational therapy using disabled and non- disabled children as subjects are expected in the future.