• Title/Summary/Keyword: 지능형 이론

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Technology Trends of SmartAmerica Challenge (SmartAmerica Challenge 기술동향)

  • Kim, W.T.;Lee, S.H.;Chun, I.G.;Yu, M.S.;Kim, K.T.;Lim, C.D.
    • Electronics and Telecommunications Trends
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    • v.29 no.4
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    • pp.72-81
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    • 2014
  • 최근 CPS(Cyber-Physical Systems)는 IoT(Internet of Things), 빅데이터 기술과 함께 미래 전력산업의 핵심 키워드로 등장하고 있다. CPS는 산업의 중심이 하드웨어에서 소프트웨어로 빠르게 전환하고 있는 현시점에서 기존의 물리시스템 혹은 물리프로세스를 효율적이고 안전하며 지능적으로 만들고 운영하기 위한 기술이다. 지난 2007년 미국을 중심으로 기술개발이 시작된 이래 다시금 새로운 전환기를 맞이하고 있다. 미국은 지난 2013년 제 2기 PIF(Presidential Innovation Fellow)의 주도로 SmartAmerica Challenge라는 이름으로 새로운 가치와 일자리 창출을 위한 국민생활 밀착형 대규모 CPS 융합 프로그램을 추진 중이다. 이를 통해 미국은 학술적이고 이론적인 CPS R&D 전략으로부터 보다 현실적으로 국부를 창출할 수 있는 개방형 R&BD형의 CPS 기술발전을 모색하고 있다. 본고에서는 CPS의 태동 배경으로부터 최근 SmartAmerica Challenge에 이르는 전반적인 CPS 기술동향을 조망하고 향후 우리의 나아갈 바를 제언하는 것으로 글을 맺고자 한다.

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Design and Implementation of an Adaptive learning Management System for Personalized Learning (학습자 특성을 고려한 적응적 학습 관리 시스템의 설계 및 구현)

  • 김명회;이현태;오용선
    • The Journal of the Korea Contents Association
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    • v.4 no.1
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    • pp.8-17
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    • 2004
  • In this paper, we design an intelligent loaming management logics which provide personalized teaming considering adaptive learning content dement and content sequencing. We enhance the existing functional model including adaptive learning management functions. Also, we present a system architecture to implement the adaptive learning management system. We realize the adaptive teaming management system based on the SCORM run-time engine.

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A Study on the Buyer's Decision Making Models for Introducing Intelligent Online Handmade Services (지능형 온라인 핸드메이드 서비스 도입을 위한 구매자 의사결정모형에 관한 연구)

  • Park, Jong-Won;Yang, Sung-Byung
    • Journal of Intelligence and Information Systems
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    • v.22 no.1
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    • pp.119-138
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    • 2016
  • Since the Industrial Revolution, which made the mass production and mass distribution of standardized goods possible, machine-made (manufactured) products have accounted for the majority of the market. However, in recent years, the phenomenon of purchasing even more expensive handmade products has become a noticeable trend as consumers have started to acknowledge the value of handmade products, such as the craftsman's commitment, belief in their quality and scarcity, and the sense of self-esteem from having them,. Consumer interest in these handmade products has shown explosive growth and has been coupled with the recent development of three-dimensional (3D) printing technologies. Etsy.com is the world's largest online handmade platform. It is no different from any other online platform; it provides an online market where buyers and sellers virtually meet to share information and transact business. However, Etsy.com is different in that shops within this platform only deal with handmade products in a variety of categories, ranging from jewelry to toys. Since its establishment in 2005, despite being limited to handmade products, Etsy.com has enjoyed rapid growth in membership, transaction volume, and revenue. Most recently in April 2015, it raised funds through an initial public offering (IPO) of more than 1.8 billion USD, which demonstrates the huge potential of online handmade platforms. After the success of Etsy.com, various types of online handmade platforms such as Handmade at Amazon, ArtFire, DaWanda, and Craft is ART have emerged and are now competing with each other, at the same time, which has increased the size of the market. According to Deloitte's 2015 holiday survey on which types of gifts the respondents plan to buy during the holiday season, about 16% of U.S. consumers chose "homemade or craft items (e.g., Etsy purchase)," which was the same rate as those for the computer game and shoes categories. This indicates that consumer interests in online handmade platforms will continue to rise in the future. However, this high interest in the market for handmade products and their platforms has not yet led to academic research. Most extant studies have only focused on machine-made products and intelligent services for them. This indicates a lack of studies on handmade products and their intelligent services on virtual platforms. Therefore, this study used signaling theory and prior research on the effects of sellers' characteristics on their performance (e.g., total sales and price premiums) in the buyer-seller relationship to identify the key influencing e-Image factors (e.g., reputation, size, information sharing, and length of relationship). Then, their impacts on the performance of shops within the online handmade platform were empirically examined; the dataset was collected from Etsy.com through the application of web harvesting technology. The results from the structural equation modeling revealed that the reputation, size, and information sharing have significant effects on the total sales, while the reputation and length of relationship influence price premiums. This study extended the online platform research into online handmade platform research by identifying key influencing e-Image factors on within-platform shop's total sales and price premiums based on signaling theory and then performed a statistical investigation. These findings are expected to be a stepping stone for future studies on intelligent online handmade services as well as handmade products themselves. Furthermore, the findings of the study provide online handmade platform operators with practical guidelines on how to implement intelligent online handmade services. They should also help shop managers build their marketing strategies in a more specific and effective manner by suggesting key influencing e-Image factors. The results of this study should contribute to the vitalization of intelligent online handmade services by providing clues on how to maximize within-platform shops' total sales and price premiums.

Design of Robust Fuzzy Controller for Load-Frequency Control of Power Systems Using Intelligent Digital Redesign Technique (지능형 디지털 재설계 기법을 이용한 전력 계통의 부하 주파수 제어를 위한 강인한 퍼지 제어기 설계)

  • Joo, Young-Hoon;Jeo, Sang-Won;Kwon, Oh-Sin
    • Journal of the Korean Institute of Intelligent Systems
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    • v.10 no.4
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    • pp.357-367
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    • 2000
  • A new robust load-frequency control methodology is proposed for nonlinear power systems with valve position limits of the governor in the presence of parametric uncertaines. The TSK fuzzy model is adopted and formulated for fuzzy modeling of the nonlinear power system. A sufficient condition of the robust stabilitry is presented in the sense of lyapunov for the TSK model with parametric uncertainties. The intekkigent digital redesign technique for the uncertain power systems is also studied. The effectiveness of the robust digital fuzzy controller disign mothod is demonstrated through a numerical simulation.

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Intelligent Drowsiness Drive Warning System (지능형 졸음 운전 경고 시스템)

  • Joo, Young-Hoon;Kim, Jin-Kyu;Ra, In-Ho
    • Journal of the Korean Institute of Intelligent Systems
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    • v.18 no.2
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    • pp.223-229
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    • 2008
  • In this paper. we propose the real-time vision system which judges drowsiness driving based on levels of drivers' fatigue. The proposed system is to prevent traffic accidents by warning the drowsiness and carelessness using face-image analysis and fuzzy logic algorithm. We find the face position and eye areas by using fuzzy skin filter and virtual face model in order to develop the real-time face detection algorithm, and we measure the eye blinking frequency and eye closure duration by using their informations. And then we propose the method for estimating the levels of drivel's fatigue based on measured data by using the fuzzy logic and for deciding whether drowsiness driving is or not. Finally, we show the effectiveness and feasibility of the proposed method through some experiments.

Fuzzy Controller for Intelligent Networked Control System with Neutral Type of Time-delay (뉴트럴 타입 시간 지연을 갖는 지능형 네트워크 제어 시스템의 퍼지 제어기 설계)

  • Joo, Young-Hoon
    • Journal of the Korean Institute of Intelligent Systems
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    • v.19 no.2
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    • pp.174-179
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    • 2009
  • We consider the stabilization problem for a class of networked control systems with neutral type of time delays. The neutral type of time-delays occur in controller-to-actuator and sensor-to-controller. The Takagi-Sugeno (T-S) fuzzy model is employed to represent a nonlinear system with neutral type of time-delays. The stabilization via state-feedback is first addressed, and delay-range-dependent stabilization conditions are proposed in terms of linear matrix inequalities (LMIs). Finally, an application example will be given to show the merits and design a procedure of the proposed approach.

Metal Object Detection System For Drive Inside Protection (내부 운전자 보호를 위한 금속 물체 탐지 시스템)

  • Kim, Jin-Kyu;Joo, Young-Hoon
    • Journal of the Korean Institute of Intelligent Systems
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    • v.19 no.5
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    • pp.609-614
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    • 2009
  • The purpose of this paper is to design the metal object detection system for drive inside protection. To do this, we propose the algorithm for designing the color filter that can detect the metal object using fuzzy theory and the algorithm for detecting area of the driver's face using fuzzy skin color filter. Also, by using the proposed algorithm, we propose the algorithm for detecting the metallic object candidate regions. And, the metallic object color filter is then applied to find the candidate regions. Finally, we show the effectiveness and feasibility of the proposed method through some experiments.

Dynamic Facial Expression of Fuzzy Modeling Using Probability of Emotion (감정확률을 이용한 동적 얼굴표정의 퍼지 모델링)

  • Gang, Hyo-Seok;Baek, Jae-Ho;Kim, Eun-Tae;Park, Min-Yong
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 2007.04a
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    • pp.401-404
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    • 2007
  • 본 논문은 거울 투영을 이용하여 2D의 감정인식 데이터베이스를 3D에 적용 가능하다는 것을 증명한다. 또한, 감정 확률을 이용하여 퍼지 모델링을 기반으로한 얼굴표정을 생성하고, 표정을 움직이는 3가지 기본 움직임에 대한 퍼지이론을 적용하여 얼굴표현함수를 제안한다. 제안된 방법은 거울 투영을 통한 다중 이미지를 이용하여 2D에서 사용되는 감정인식에 대한 특징벡터를 3D에 적용한다. 이로 인해, 2D의 모델링 대상이 되는 실제 모델의 기본감정에 대한 비선형적인 얼굴표정을 퍼지를 기반으로 모델링한다. 그리고 얼굴표정을 표현하는데 기본 감정 6가지인 행복, 슬픔, 혐오, 화남, 놀람, 무서움으로 표현되며 기본 감정의 확률에 대해서 각 감정의 평균값을 사용하고, 6가지 감정 확률을 이용하여 동적 얼굴표정을 생성한다. 제안된 방법을 3D 인간형 아바타에 적용하여 실제 모델의 표정 벡터와 비교 분석한다.

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An Empirical Study of Web-based Question-Answer Services (지식검색서비스의 이용에 관한 실증적 연구)

  • Park, Joo-Bum;Jeong, Dong-Youl
    • Proceedings of the Korean Society for Information Management Conference
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    • 2004.08a
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    • pp.31-38
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    • 2004
  • 본 연구는 지식검색서비스의 특성과 성능 분석을 근거로 이용자의 정보요구와 이용행태 등 지식검색 서비스 이용과 관련된 제반사항을 조사 · 분석함으로써 이용자들의 요구를 보다 충족시킬 수 있는 지식검색서비스 방안을 제시하기 위한 목적으로 수행되었다. 이론적 연구와 실증적 이용연구에서 분석된 결과를 기초로 한 개선방안은 지식의 효과성과 검색서비스의 효율성을 강화시키는 요소를 중심으로 제시되었다. 지식 자체의 효과를 높이기 위해서는 답변의 전문성, 정확성, 주제의 특성 및 다양성을 향상시켜야 하고, 검색서비스의 효율성을 높이기 위해서는 쌍방향성, 즉시성, 편리성의 측면을 강화시켜야 한다. 이에 대한 구체적 방안으로 답변자나 답변내용의 제한, 지식 자체의 가치결정, 커뮤니케이션 수단의 확대, 질문처리과정 확인 기능, 질문자나 답변자의 로그온 상태 표시, 지능형 검색방식의 확충 등을 제안한다.

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Extraction of Korean Information from Maps by Spatial Filtering Neural Network (공간 필터링 신경회로망에의한 지도에서의 한글 문자 정보의 추출)

  • Lee, U-Beom;Jeong, Ji-Uk;Hwang, Ha-Jeong;Kim, Uk-Hyeon
    • The Transactions of the Korea Information Processing Society
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    • v.5 no.1
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    • pp.223-235
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    • 1998
  • 도면 중에 내재한 지리정보를 이해해서 공간 자료에 대한 사용자의 질의에 응답할 수 있는 지능형 시스템의 설계는 화상처리 연구의 중요한 응용분야이다. 특히, 지도도면에는 도로, 강, 지역경계, 문자, 심벌 등의 지리정보가 존재하며, 이 개체와 개체 사이의 관계를 포함하는 데이터베이스의 구축은 매우 어려운 일이다. 본 논문에서는 지도도면으로부터 문자정보의 추출과 인식을 위해서 시신경계의 특징추출 이론을 적용한 공간 필터링 신경회로망을 제안한다. 본 시스템을 국립지리원 발행의 1/5,000지도에 적용하여 그 유효성을 보인다.

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