• Journal of the Korea Institute of Military Science and Technology
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• v.13 no.5
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• pp.808-817
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• 2010

This paper proposes a novel appoach which can assess the system technical maturity for use in Defense R&D Program reviews. As the weapon systems become more complicated, the success and effectiveness of R&D outcome heavily depend on the application and tailoring of systems engineering process and methods. It is a difficult task to assess the system readiness level(SRL) of the system being developed. A system-focused approach for managing weapon systems development and making effective and efficient decisions during the development lifecycle is critical to ensure the success of the program. The proposed weighted average SRL can facilitate the system technical maturity assessment without expending heavy work load.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.468-471
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• 2012

음성을 통한 자동화된 감정 인식은 편리하고 다양한 서비스를 제공할 수 있어 중요한 연구분야라고 할 수 있다. 기계학습의 다양한 알고리즘을 사용하여 감정을 인식하는 연구가 진행되어 왔지만 그 성능은 아직 초보적 단계를 벋어나지 못하고 있는 실정이다. 앞선 연구에서 우리는 비감독 학습 방법으로 감성을 그룹화 하고 이것을 이용하여 다시 감독 학습을 하는 시스템을 소개 하였다. 본 연구에서 우리는 감독 학습 방법에서 사용했던 오류 역전파 알고리즘을 support vector machine(SVM) 으로 변경하고 몇 가지 구조를 변경하여 기능을 개선하였다. 실험을 통하여 성능을 측정하였으며 어느 정도 개선된 결과를 얻을 수 있었다.

• Wind and Structures
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• v.32 no.5
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• pp.501-508
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• 2021

The turbine industry demands a reliable design with affordable cost. As technological advances begin to support turbines of huge sizes, and the increasing importance of wind turbines from day to day make design safety conditions more important. Wind turbines are exposed to environmental conditions that can affect their installation, durability, and operation. International Electrotechnical Commission (IEC) 61400-1 design load cases consist of analyses involving wind turbine operating conditions. This design load cases (DLC) is important for determining fatigue loads (i.e., forces and moments) that occur as a result of expected conditions throughout the life of the machine. With the help of FAST (Fatigue, Aerodynamics, Structures, and Turbulence), an open source software, the NREL 5MW land base wind turbine model was used. IEC 61400-1 wind turbine design standard procedures assessed turbine behavior and fatigue damage to the tower base of dynamic loads in different design conditions. Real characteristic wind speed distribution and multi-directional effect specific to the site were taken into consideration. The effect of these conditions on the economic service life of the turbine has been studied.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.351-352
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• 2023

컴퓨터공학 분야 개발자를 채용할 때 대다수의 기업에서 일반 면접과는 달리 전공 분야 역량 파악을 위한 컴퓨터공학 기술 면접을 함께 진행한다. 컴퓨터공학 면접자의 기술 면접을 지원하기 위하여 이 논문에서는 컴퓨터공학 핵심 개념에 대한 면접자 답변의 정확도를 코사인 유사도를 이용하여 평가 후 결과를 알려주는 시스템을 제안한다. 제안한 시스템을 이용하면 개발자들의 컴퓨터공학 핵심 개념의 기술 면접 정확도를 향상시킬 수 있을 것으로 기대된다.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.22 no.2
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• pp.171-180
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• 2019

Purpose: Malnutrition may influence neurocognitive development in children by directly affecting the brain structural development, or indirectly by affecting the children's cognition experience. Malnutrition alters the cell numbers, cell migration, synaptogenesis, and neurotransmission due to inadequate availability of necessary micronutrients to support cell growth. We aimed to analyze neurocognitive development in infants with malnutrition and its association with long chain polyunsaturated fatty acids (LC-PUFA), micronutrients levels and magnetic resonance spectroscopy (MRS) findings. Methods: The study included two groups; group 1, infants with malnutrition (n=24), group 2; healthy infants (n=21). Peripheral blood was obtained from the participants for studying micronutrients and LC-PUFA levels. The neurocognitive development was analyzed by the use of an Ankara Developmental Screening Inventory test. MRS were performed on all infants. Results: All parameters of neurocognitive development and serum calcium ($9.6{\pm}0.9mg/dL$ vs. $10.4{\pm}0.3mg/dL$, p<0.05) and magnesium ($2.02{\pm}0.27mg/dL$ vs. $2.2{\pm}0.14mg/dL$, p<0.05) levels were noted as being low in infants with marked malnutrition. No difference was found in LC-PUFA levels between healthy and malnourished infants. Thalamic choline/creatine levels were significantly high in infants with malnutrition ($1.33{\pm}0.22$ vs. $1.18{\pm}0.22$, p<0.05). Total neurocognitive development in infants was positively correlated with serum calcium levels (p<0.05, r=0.381). Conclusion: Calcium supplementation may improve neurocognitive development in malnourished infants.

• Proceedings of the Korea Society of Information Technology Applications Conference
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• 2007.05a
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• pp.234-245
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• 2007

The empirical studies on the implementation of data warehousing systems (DWS) are lacking while there exist a number of studies on the implementation of IS. This study intends to examine the factors affecting the implementation success of DWS. The study adopts the empirical analysis of the sample of 112 responses from DWS practitioners. The study results suggest several implications for researchers and practitioners. First, when the support from top management becomes great, the implementation success of DWS in organizational aspects is more likely. When the support from top management exists, users are more likely to be encouraged to use DWS, and organizational resistance to use DWS is well coped with increasing the possibility of implementation success of DWS. The support of resource increases the implementation success of DWS in project aspects while it is not significantly related to the implementation success of DWS in organizational aspects. The support of funds, human resources, and other efforts enhances the possibility of successful implementation of project; the project does not exceed the time and resource budgets and meet the functional requirements. The effect of resource support, however, is not significantly related to the organizational success. The user involvement in systems implementation affects the implementation success of DWS in organizational and project aspects. The success of DWS implementation is significantly related to the users' commitment to the project and the proactive involvement in the implementation tasks. users' task. The observation of the behaviors of competitors which possibly increases data quality does not affect the implementation success of DWS. This indicates that the quality of data such as data consistency and accuracy is not ensured through the understanding of the behaviors of competitors, and this does not affect the data integration and the successful implementation of DWS projects. The prototyping for the DWS implementation positively affects the implementation success of DWS. This indicates that the extent of understanding requirements and the communication among project members increases the implementation success of DWS. Developing the prototypes for DWS ensures the acquirement of accurate or integrated data, the flexible processing of data, and the adaptation into new organizational conditions. The extent of consulting activities in DWS projects increases the implementation success of DWS in project aspects. The continuous support for consulting activities and technology transfer enhances the adherence to the project schedule preventing the exceeding use of project budget and ensuring the implementation of intended system functions; this ultimately leads to the successful implementation of DWS projects. The research hypothesis that the capability of project teams affects the implementation success of DWS is rejected. The technical ability of team members and human relationship skills themselves do not affect the successful implementation of DWS projects. The quality of the system which provided data to DWS affects the implementation success of DWS in technical aspects. The standardization of data definition and the commitment to the technical standard increase the possibility of overcoming the technical problems of DWS. Further, the development technology of DWS affects the implementation success of DWS. The hardware, software, implementation methodology, and implementation tools contribute to effective integration and classification of data in various forms. In addition, the implementation success of DWS in organizational and project aspects increases the data quality and system quality of DWS while the implementation success of DWS in technical aspects does not affect the data quality and system quality of DWS. The data and systems quality increases the effective processing of individual tasks, and reduces the decision making times and efforts enhancing the perceived benefits of DWS.

• Journal of East-West Nursing Research
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• v.7 no.1
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• pp.48-60
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• 2002

This study was conducted to understand and analyze experience of learning process support toward mothers of children who suffer from Cerebral Palsy, to generalize and structurize the meaning of practical learning process support, and to use the study results as basic materials for development of support model. Study subjects were 12 mothers who have Cerebral Palsy children attending an ordinary school and a school for handicapped children. Data were collected from November 10, 1999 to December 29, 2000 and from January 20 to March, 2001, for 2 months. Data were collected from un-structural and open questions. And the collected data were analyzed with the phenomenological analysis method proposed by van Kaam(1969). Study results obtained from this report were as follows; As for original materials about learning process support experience of cerebral palsy children's mothers, 48 technical expressions were derived from 97 pieces of original materials, they were categorized into 10 common elements. Those common elements were , , , , , , , , , . Based on the above results, it is suggested that the concept of learning process support toward children suffering from Cerebral Palsy should be structureized, and proper models should be developed.