• 한국통신학회논문지
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• 제37권2C호
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• pp.206-216
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• 2012

최근의 전장 상황이 디지털 네트워크 중심의 전장체계를 기반으로 진화하면서, 개발해야 할 국방 전술무기체계가 첨단화, 복잡화, 다기능화 및 고도의 정밀화 등의 특성으로 가속화 되고 있다. 따라서 오늘날 국방 연구개발에서의 복잡도, 비용, 개발기간 및 위험 등을 효율적으로 관리하면서 성공적인 과제수행을 위해서는 시스템공학적인 설계 방법론의 적용이 필수불가결하게 되었다. 본 논문에서는 국방무기체계를 개발하기 위한 전체 수명주기 중 개념설계(conceptual design) 단계의 설계 활동에서 시스템공학 기법을 기반으로 하되 그래픽모델을 활용함으로써 여러 가지 장점을 추구하는 방안에 관해서 기술하고 있다. 특히 설계 대상시스템으로서 무인항공기 체계개발을 선택하였고, 모델링언어로서 표준 언어인 SysML을 적용함으로써 활용성을 증대시키고, 생성 된 모델들이 개념연구단계의 설계 활동에서 활용될 수 있는 방안에 관하여 논의하고 있다. 본 연구의 결과를 기반으로 향 후 추가 연구를 수행하면, 대형복합 국방무기시스템개발에서 전면적인 모델기반 시스템공학 방법론을 적용하기 위한 발전과정에 도움이 될 것으로 기대된다.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제16권2호
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• pp.111-118
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• 2016

Artificial intelligence (AI) is making computer systems intelligent to do right thing. The AI is used today in a variety of fields, such as journalism, medical, industry as well as entertainment. The impact of AI is becoming larger day after day. In general, the AI system has to lead the optimal decision under uncertainty. But it is difficult for the AI system can derive the best conclusion. In addition, we have a trouble to represent the intelligent capacity of AI in numeric values. Statistics has the ability to quantify the uncertainty by two approaches of frequentist and Bayesian. So in this paper, we propose a methodology of the connection between statistics and AI efficiently. We compute a fixed value for estimating the population parameter using the frequentist learning. Also we find a probability distribution to estimate the parameter of conceptual population using Bayesian learning. To show how our proposed research could be applied to practical domain, we collect the patent big data related to Apple company, and we make the AI more intelligent to understand Apple's technology.

• 한국데이터정보과학회:학술대회논문집
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• 한국데이터정보과학회 2005년도 춘계학술대회
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• pp.127-134
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• 2005

A suitable representation for the conceptual simplicity of the data in statistics and signal processing is essential for a subsequent analysis such as prediction, pattern recognition, and spatial analysis. Independent component analysis (ICA) is a statistical method for transforming an observed high-dimensional multivariate data into statistically independent components. ICA has been applied increasingly in wide fields of spectrum application since ICA is able to extract unknown components of a mixture from spectra. We focus on application of ICA for separating independent sources and predicting each composition using extracted components. The theory of ICA is introduced and an application to a metal surface spectra data will be described, where subsequent analysis using non-negative least square method is performed to predict composition ratio of each sample. Furthermore, some simulation experiments are performed to demonstrate the performance of the proposed approach.

• 품질경영학회지
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• 제22권1호
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• pp.133-141
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• 1994

The determination of the tolerance on the lower-level characteristics for the given upper-level characteristics is an indispensable problem in manufacturing industries. The procedure, proposed by Taguchi, for this matter can be easily applied in engineering fields due to its conceptual simplicity. However, the previously developed methods are known to have some limitations in the field applications, because the value of each major factor determining the tolerance cannot be obtained exactly. In this paper, a tolerance design procedure is proposed under the assumption that the major factors to determine the tolerance is uncertain. For the validity of the method proposed in this paper, a hypothetical problem is employed and analyzed.

• 한국실내디자인학회논문집
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• 제19호
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• pp.136-143
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• 1999

Art belongs to men's mentality and plays the most representative role in mentality. The organization of mentality is complex, it has simple and distinct movement evolving into various configuration to achieve men's internal meaning and aim. The purpose of this study is to analyze Max Bill's characteristics of the spatial expression on his works, especially focuses on the concept called "simplicity". The simplicity does not means just a conceptual or formal terminology, but the logical principles of spatial organization through repeating arrangement, structural relationship, off-central ideas and the sequence of signs using by the composition of lines, faces and colors. He expressed the logical methods in various fields of art and has influenced his essential thoughts and emotion in men's mentality of the late 20th century20th century.

• 대한간호학회지
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• 제36권5호
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• pp.803-812
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• 2006

Purpose: The purpose of this study was to identify attributes of the concept of spiritual care. Method: Walker & Avant's concept analysis framework was employed to review the clinical guidelines, nursing text books, and nursing research articles which were related to spiritual care and published from 1985 to 2005. Result: The attributes of the concept of spiritual care were a three stage process such as spiritual assessment, spiritual intervention, and spiritual evaluation. Spiritual care included three dimensions of relationships such as transpersonal, interpersonal, and intrapersonal. The quality of spiritual care was dependent upon characteristics of care-givers such as perception and knowledge of spiritual care, and the clinical environment. The antecedents of spiritual care was spiritual needs due to the prompt events. The consequence of spiritual care was spiritual well-being. Conclusion: This concept analysis of spiritual care contributed to promote performance of spiritual care in clinical fields by removing conceptual ambiguity and confirming the true meaning of spiritual care.

• 한국가구학회지
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• 제26권4호
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• pp.291-300
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• 2015

The Netherlands' contemporary Art Furniture has drawn large attention from design and art fields all around the world because of Dutch designers' intriguing themes and experimental approaches. Its successful achievement not comes from certain policies or personalities, but the result of ceaseless internal criticisms and self examinations. After World War II, Modernism was the most common notion of furniture design for mass production in the Netherlands like other nations, but Dutch designers and critics put modernist canon up for discussion since 1960s. They have searched counter modernist design for expression of human element and warmth using art works, craft, and Postmodernism theory, etc. Throughout design debate of modernism, free design, design as art and conceptual design, now we could observe Dutch designer's unique and distinguished Art Furniture in the influential places. By analyzing the development of the Netherlands' contemporary Art Furniture in chronological sequences, we could understand them better and learn something useful to Art Furniture in South Korea.

• 한국IT서비스학회지
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• 제7권3호
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• pp.271-286
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• 2008

The core of the semantic web is ontology, which supports interoperability among semantic web applications and enables developer to reuse and share domain knowledge. It used a variety of fields such as Information Retrieval, E-commerce, Software Engineering, Artificial Intelligence and Bio-informatics. However, the reality is that various errors might be included in conceptual hierarchy when developing ontologies. Therefore, methodologies and supporting tools are essential to help the developer construct suitable ontologies for the given purposes and to detect and analyze errors in order to verify the inconsistency in the ontologies. In this paper we propose a new approach for ontology error detection based on the Concept Lattices of Formal Concept Analysis. By using the tool that we developed in this research, we can extract core elements from the source code of Ontology and then detect some structural errors based on the concept lattices. The results of this research can be helpful for ontology engineers to support error detection and construction of "well-defined" and "good" ontologies.

• 가정과삶의질연구
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• 제14권1호
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• pp.131-146
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• 1996

The purpose of this study was to review the previous studies that have dealt with and used Family Adaptibility and Cohesion Evaluation Scales(FACES) considered as an effective instrument for measuring family functioning in order to clarify the theoretical meaning the practical applicability the limitation and the problems of this instrument. FACES has considerably contributed in measuring family dynamics in research and clinical fields and been paid attention to by researchers and clinicians since 1979 However the instrument has been also pointed out its limitation due to the conceptual and methodological problems. This study reviews these problems and then presents some implications to help to improve these problems and to explore the application of this instrument as a measure of family functioning.

• 한국통신학회논문지
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• 제23권9A호
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• pp.2313-2324
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• 1998

Although visual programming is used in many fields of computer science and engineering, some dis-advantages can be found when they work together in an integrated programming environment. To overcome these shortcomings, there have been researches in combining multiparadigm with visual programming. However they have failed because they tried to combine the paramdigms without any coceptural model and structured method. In this paper, we investigate a new multiparadigm visual programming environment (MVPE), in which dataflow paradigm, form-based paradign, direct manipulation paradigm, and object-oriented paradigm are integrated together in an object-oriented way, based on the conceptual model of "method = paradigm, " This MVPE would overcome the limits of visual programming, and may also lead to the new discipline of visual programming environment.vironment.