• 한국정밀공학회지
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• 제15권3호
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• pp.50-60
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• 1998

This paper is concerned with the design of two residual control charts for real-time monitoring of the continuous flow processes. Two different control charts are designed under the situation that observations are correlated each other. Kalman-Filter based model estimation is employed when the process model is known. A black-box approach, based on Back-Propagation Neural Network, is also applied for the design of control chart when there is no prior information of process model. Performance of the designed control charts and traditional control charts is evaluated. Average run length(ARL) is adopted as a criterion for comparison. Experimental results show that the designed control chart using the Neural Network's modeling has shorter ARL than that of the other control charts when process mean is shifted. This means that the designed control chart detects the out-of-control state of the process faster than the others. The designed control chart using the Kalman-Filter based model estimation also has better performance than traditional control chart when process is out-of-control state.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 2001년도 춘계학술대회 학술발표 논문집
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• pp.126-130
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• 2001

In this paper, we propose the design methodology of target tracking system using fuzzy basis function expansion (FBFE) based on virus evolutionary genetic algorithm(VEGA). In general, the objective of target tracking is to estimate the future trajectory of the target based on the past position of the target obtained from the sensor. In the conventional and mathematical nonlinear filtering method such as extended Kalman filter (EKF), the performance of the system may be deteriorated in highly nonlinear situation. To resolve these problems of nonlinear filtering technique, by appling artificial intelligent technique to the tracking control of moving targets, we combine the advantages of both traditional and intelligent control technique. In the proposed method, after composing training datum from the parameters of extended Kalman filter, by combining FBFE, which has the strong ability for the approximation, with VEGA, which prevent GA from converging prematurely in the case of lack of genetic diversity of population, and by identifying the parameters and rule numbers of fuzzy basis function simultaneously, we can reduce the tracking error of EKF. Finally, the proposed method is applied to three dimensional tracking problem, and the simulation results shows that the tracking performance is improved by the proposed method.

• 한국콘텐츠학회논문지
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• 제21권9호
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• pp.75-87
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• 2021

본 연구는 가상현실 안전교육 콘텐츠의 기획과 제작에 참고할 수 있도록 내용 구성 단계별 인터랙션 디자인 특성을 도출하는 것을 목적으로 하였다. 선행연구를 토대로 VR 안전교육 콘텐츠 구성의 특성과 VR 사용자 인터페이스의 분류, 인터랙션 유형, 인터랙션 방식, 인터랙션 구성 요소들의 관계를 정리하여 인터페이스의 관계 분석 틀을 제시하였으며, VR안전교육 콘텐츠 사례 분석을 통해 비상 상황 대응절차 지식의 습득, 사고 상황 체험 학습 그리고 내용의 확인 및 평가의 세 가지 구성단계에서 각각 다음과 같은 상호작용 디자인 특징을 가지고 있음을 확인하였다. 첫째, 학습자 체험단계에서 교육 핵심 체험을 강조하기 위하여 행위 충실도를 높이고 일반적이고 반복적인 행동은 간략하게 축소하여 체험의 질을 조절하는 것이 드러났다. 둘째, 학습자가 생소한 환경에서 안전 행동 절차에 대한 정보 습득을 위하여 주요 상호작용 대상물을 쉽게 인지할 수 있도록 공간UI나 화살표나 상징을 활용한 기표, 행위를 구체적으로 지시하는 게시글 및 다감각 신호를 활용하여 사용자 체험 자유도를 낮추는 방식으로 필수 행위를 강조하고 인지적 인터랙션을 위한 비사실적 방식 인터랙션 비중이 증가하는 것으로 나타났다. 마지막으로 체험의 확인과 평가 단계에서 사고 상황 후 신체손상 등의 부정적 경험을 은유적으로 경험하도록 하는 메타UI를 활용하고 3인칭 시점이나 반복재생의 방식으로 학습자의 체험을 객관적 시각으로 환기하는 것이 활용되었다. 또한 이러한 특성과 관련하여 인터랙션 차원에 따른 요소들의 관계를 도출하여 제시하였다.

• 한국실내디자인학회논문집
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• 제24권3호
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• pp.186-196
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• 2015

This research comprehended the fundamental cause of elderly nursing home residents' negative feelings of loneliness, depression, fear, and loss of self-usefulness as existential issue, since they already went through loss, death of loved ones, geriatric disease and disability. The purpose of this research is to explore how existentialism and existential psychotherapy theory of Irvin D. Yalom can be applied to nursing home environment design, and to suggest design directions. Based on his framework of human's ultimate interest, death, freedom followed by responsibility, isolation, and meaninglessness, interior design suggestions and applicable spaces were presented. Four cases from Australia, Denmark, Japan and Korea were analyzed according to design suggestions to grasp the current situation and to draw further proposition. The conclusions are as follows. (1)Environment should support nursing home residents to resolve existential issues. (2)Death is the least supported issue on all of the cases. Environmental elements that can induce residents to think and discuss on death, hospice program and space for memorial service is necessary. (3)Regarding to freedom, the environment should support resident's disability to maintain independence as much as possible and residents autonomy and decision should be respected. Single/double rooms, motorized bed, free and safe usage of kitchen and garden are necessary. (4)For isolation, Space and time for meditation should be provided. (5)To find meaning of life, environment should support residents in both physical and cognitive aspect so that they can contribute to others. Space for hobby is necessary for continued creativity and self-realization.

• 상하수도학회지
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• 제18권4호
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• pp.437-444
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• 2004

To control algal bloom in reservoirs in Korea, artificial circulation systems have been applied. Diffuser block aeration systems have been increasingly used in Korean reservoirs especially for shallow ones. However, there has been no sound theoretical background for the design and operation of the system. Also there has not been sufficient post-installation studies to validate the effectiveness of the system. As a result, it has been repeatedly reported that the success of the system is not certain. Proper consideration on thermal stratification regimes of reservoirs and flow dynamics induced by bubble plumes are essential elements in design processes of the aeration system. This paper discusses the current methods in the design of diffuser type aeration system and suggests a new design method based on fluid mechanical theory. Example calculations were discussed using observed data of the Yeoncho Dam and it seems that the results represent the current situation successfully.

• 한국인터넷방송통신학회논문지
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• 제15권1호
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• pp.69-76
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• 2015

블루투스 4.0은 블루투스 저전력 에너지 근거리 통신 기술로서 블루투스 3.0에 비해 소비전력이 낮아지고 전파도달 거리도 70m 까지 길어짐에 따라 활용범위가 커지고 있어 전력소모가 적어 모든 기기가 항상 연결되는 사물인터넷 구현에 적합하다. 따라서 본 논문에서는 비콘 기술 현황을 조사하고 비콘 기술을 이용한 음식점 광고/주문 시스템 설계원리를 기술한다. 또한 블루투스 4.0 기술에 기반한 발신장치인 비콘의 설계와 블루투스 4.0 수신 장치의 설계를 보여주고 이와 연동하는 스마트폰 앱 설계 방법을 제시함으로써 본 설계 방법이 음식점 광고/주문 상용시스템에 제작에 유용하게 활용될 수 있음을 보여준다.

• 한국콘텐츠학회논문지
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• 제7권2호
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• pp.202-211
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• 2007

인터넷 확산으로 인한 정보량의 급증으로 사용자가 원하는 정보에 손쉽게 접근하고 체계화 되지 않은 정보를 재정리하고 요약하여 인지하기 쉬운 정보로 보여주는 정보 시각화기법에 대하여 점차 많은 관심을 가지고 있다. 정보디자인은 사용자가 접하는 상황을 이해하고 이를 바탕으로 디자인되어야 하는데, 시스템적인 측면을 강조하여 시각화하는 방법을 사용함으로서 사용자의 인지를 어렵게 하는 문제점을 갖고 있었다. 본 연구에서는 정보 전달의 효율성 개선을 위한 지도 정보 검색 서비스에 대한 연구로써 사용자 인터페이스 디자인 설계 원칙에 대한 고찰과 정보시각화 시스뎀 평가 기준과의 상호 비교를 통해 얻은 평가 리스트를 통하여 지도정보 검색서비스의 사용자 인터페이스 디자인 문제점을 분석하였다.

• 한국CDE학회논문집
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• 제19권2호
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• pp.91-102
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• 2014

The outer surface of an irregular structure contains panels with two-directional curvature called NURBS. To construct these forms of exterior materials, complex geometric surface should be divided into forms and sizes that can be manufactured and constructed. Because the bigger the curvatures of these divided exterior panel, the more expensive the construction costs, these complex two-directional curvatures should go through optimal process of reinterpretation to minimize the curved surfaces with complex two-directional curvatures. Yet, to gain higher ground in technological competition in the field of irregular structure construction, companies do not share know-how that they obtained. Accordingly, small construction and design companies have trouble calculating even rough estimate and cannot adjust expected construction cost based on comparison of design alternatives. Given this situation, this study conducted the research that can support decision-making in the design stage of the construction and provide basic material for optimal range to reduce manufacturing cost by the minimizing the distorted plane of the irregular structure.

• 복식
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• 제23권
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• pp.225-248
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• 1994

The purpose of this study is to find an effective curriculum of the future in the fashion design and the clothing construction area by comparing the curricula of the fashion -related departments in domestic college. The research finding are as follows : 1. Clear objectives of fashion education need to be defined based upon the characteristics of the field. 2. Following education methods are suggested for the fashion design area. 1) Basic core courses need to be offered to support the fashion design courses. 2) More design -practice courses need to be included to educate creative designers and the curriculum need to reflect also the needs of the Apparel Industry practioners. 3) Major concentration systems need to be introduced. 4) Intership which is a kind of the Academy and Industry cooperation needs to be introduced. 3. Following education methods are suggested for the clothing construction area. 1) Major concentration systems need to be introduced. 2) Workshops which are similar to the actual production systems of the clothing Apparel Industry, are required. 3) Internship is required. 4) Course required for both the fashion design area and the clothing construction area need to be offered effectively. The suggestion made in the research can be applied with some modifications or adjustments considering the situation of each college. Since each college has different characteristics in terms of the tradition , faculty ,size, facility etc., it is difficult to make a general statement regarding professional fashion education , however, professional fashion education should be reformed in order to achieve individuality of each college.

• 복식문화연구
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• 제29권3호
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• pp.406-421
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• 2021

During the COVID-19 pandemic, the obligatory wearing of masks has led to increased consumer demand and the diversification of mask design. Accordingly, it is necessary to understand the inner meaning and characteristics of masks in the pandemic situation. Therefore, the purpose of this research is to analyze the characteristics of fashionable masks and their new cultural meaning under the COVID-19 pandemic. This research is based on literature review and empirical research. Drawing on an investigation of the historical evolution of masks and their transition under the pandemic (exhibiting differences in mask culture among countries and regions), this study analyzed 54 distinctive fashion masks designed by fashion brands and influencers that appeared from January 2020 to January 2021. The characteristics of fashion masks identified under the influence of the pandemic are as follows: Message delivery on political issues and human rights; psychological defense and expression of individuality; and conspicuous display via luxurious materials and luxury brand logos; moreover, the design of the mask uses the same material, color, pattern, decoration, and other methods as clothing to achieve the overall style. Over the course of the pandemic (and even in post-pandemic lifestyle), fashion masks are becoming more diversified conveying new social and cultural meanings.