• 한국콘텐츠학회논문지
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• 제20권3호
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• pp.424-431
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• 2020

본 논문은 사용자 위치를 인식하여 공을 자동으로 서브하는 테니스 훈련용의 로봇 개발을 목적으로 한다. 로봇 기술을 스포츠 분야에 활용하는 경우, 야외 환경 및 스포츠 경기 방식의 특수성에 기인하여 시각, 음성과 같은 모달리티 인식에 다양한 문제점이 존재한다. 영상 정보를 이용하여 경기장 내의 사용자 가로 및 깊이 방향의 위치를 인식하는 과정에서, 네트 주위에서의 사용자 자세 변화에 따른 위치 오차 감소를 위해 가우시안 혼합 모델 및 칼만 필터를 적용하고, 이에 따라 해당 위치로 공을 서브하는 기능을 구현하고자 한다. 이를 위해 팬 틸트 기반의 움직임이 가능한 로봇 구동부 및 공압 제어 기반의 공을 발사하는 기능을 구현하고, 이를 다계층의 소프트웨어 구조로 구성하였다. 최종적으로 실험을 통한 추적 기능 및 훈련용 장치의 실효성 및 보완점을 논하고자 한다.

• 한국실내디자인학회논문집
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• 제19권2호
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• pp.155-162
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• 2010

Shopping became a meaning of simply buying goods and service as well as buying place and cultural experiences to people living nowaday. Many people make an appointment, watch movies and enjoy shopping in shopping malls. This Change of meaning of shopping made shopping center to be a place for pubic space gradually. Although shopping mall, a type of shopping center, existed from the past, contemporary shopping mall that is enclosed from air started to be established in 1950's in North America. After that lifestyle and shopping environment having been changed continuously and shopping mall in terms of architectural typology has been changed as well. Now shopping mall provides leisure and entertainment to people and also is playing an important role as redeveloping a city and revitalizing a town. This study will take a look at changes of typology of out-of-town regional shopping mall in north America and analyze reasons and characteristics of changes since 1960's shopping malls. The purpose of this study is to categorize the type of out-of-town regional shopping mall and to find application method in shopping mall design in Korea.

• 한국포장학회지
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• 제12권1호
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• pp.27-34
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• 2006

Nanotechnology is playing an increasingly important role in the development on most areas of science and technology. Because of its potential of providing novel performance at the nanoscale, the nanotechnology can influence a wide range of applications such as information, energy, environment and biology, all essential for socioeconomic development in the near future. In the packaging industry, the main applications of nanotechnology are (1) to enhance durability, (2) improve gas and oxygen barriers of raw materials for films and packaging, (3) create new functional sensors, and (4) lengthen shelf life for the packaged food quality and will also help in pharmaceuticals and cosmetics. Nanotechnology is growing in an international interactions which accelerate in science, education, and industrial R&D. Government, industries and the business sector in Korea have shown a strong ambition towards the development of nanotechnology for the future. Meanwhile, a strategic investment in packaging area is much smaller compared to supporting research and development (R&D) of various major research areas. This article were reviewed the status and trends of current packaging research and development activities using nanotechnology in Korea, USA, Japan, and other international nations.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2006년도 학술대회 1부
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• pp.513-518
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• 2006

본 논문에서는 특별한 스튜디오 조명이 아닌 가정용 혹은 학교용 조명 하에서 동작하는 감정 표현이 가능한 그림자 놀이 도구를 소개한다. 이 놀이는 사용자의 실사로부터 추출된 가상 그림자에 사용자의 동작에 따라 실시간으로 반응하는 가상 표정 애니메이션 캐릭터를 투영한다. 이 놀이 도구는 행위전시 등의 공연 환경뿐만 아니라 가정, 학교 등의 일상 환경에서도 동작이 가능하도록 설계되었다. 따라서 가장 일반적인 조명의 하나인 가정용 형광등과 백열등 환경을 가정하였고, 배경에 대해서는 어떤 제약도 가정하지 않았다. 사용자의 실사를 구분하는 과정에는 배경 차분화 기법을 사용하였고, 빛의 산란 및 실제 그림자의 영향 등으로 인한 잡음을 최소화하기 위해 몇 가지 잡음 제거 알고리즘을 결합하여 적용하였다. 이 도구에서 가상 그림자의 표정 애니메이션은 사용자의 손동작에 따라 변화하며, 손동작 및 머리 위치의 추적을 위해 새로이 고안한 자질 기반 추적 기법을 적용하였다. 이 도구는 공연장에서의 인터렉티브 미디어 아트 전시 또는 공연, 아동 대상의 미술 교육, 예술치료 등의 분야에 활용될 수 있을 것으로 판단된다.

• 지능정보연구
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• 제11권1호
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• pp.53-63
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• 2005

적응 서비스는 사용자들이 접근하는 상황의 끊임없는 변화를 반영하기 위하여 필요하다. 상황-인식은사용자 상황에 기반하여 사용자와 기기간의 상호운용성을 지원함으로서 정보 획득과 수행을 증대시키는 기술이다. 본 연구는 유비쿼터스 컴퓨팅에서 상황-인식을 다루는데 필요한 미들웨어를 개발하는 것을 그 목적으로 하고 있다. 이를 수행하기 위해서 본 연구에서 개발한 미들fil어는 블루투스 무선통신기술을 사용하여 이동시의 이동노드를 인식하고, 컨텍스트 서버에서 획득한 상황에 따라서 적절한 수행모듈을 수행하는데 중요한 역할을 담당한다. 또한, 개발한 미들웨어를 사용한 상황 정보에 따라서 음악 연주 서비스를 제공하는 응용 프로그램을 개발하여 미들웨어의 유용성을 확인하였다.

• 한국실내디자인학회논문집
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• 제20권3호
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• pp.259-266
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• 2011

Today, construction fence screens which were understood simply as structures of separating people from the dangers of construction sites have evolved into landmarks to enhance the images of Cities. Now, construction fence screens should have the function as landmarks stimulating people's sensibility through providing aesthetic values as well as the function of protecting people from the dangers of fields of construction. For this reason, this study tried 1) to show the relationships among these 4 classifications. is 4 realms of Human Beings - Cultural - Ecological - Digital in the expression methods of the construction fence screens of Seoul and 2) to simplify the characteristic elements of construction fence screens by way of extracting with Ecology, Installation Art, Symbolic, Commercial Expression. This study examined whether or not the construction fence screens of Seoul were playing the role as landmarks stimulating people's sensibility with sustainable improvement to the environment of Seoul as public design structures, by investigating some of the construction fence screens of Seoul. Also through analyzing the diversity of expression methods of the construction fence screens of other local governments as well as those of Seoul, we hope that they will be the public structures for enhancing the images of Cities.

• 한국산학기술학회논문지
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• 제13권9호
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• pp.4200-4206
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• 2012

최근 온라인 게임 산업이 급속도로 확장되었다. 하지만, 온라인 게임에서 봇 프로그램으로 인하여 다양한 게임 서비스 피해사례가 발생하고 있다. 특히, 게임 머니 및 아이템의 비정상적인 수집은 게임이 가지는 본연의 재미를 잃어버리게 하고, 궁극적으로 게임의 생명주기에 결정적으로 악영향을 미치게 된다. 본 논문은 게임 로그 데이터의 플레이 패턴을 이용한 봇 탐지 방법을 제안한다. 인간 플레이어로부터 봇과 차별화된 모델을 만들기 위해 인간 플레이어의 행동뿐만 아니라 봇 데이터도 분석에 활용한다. 실험에서는 서비스 중인 온라인 게임을 이용하여 사용자와 봇의 모델을 생성하고 유효한 결과를 확인하였다.

• 산업공학
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• 제17권spc호
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• pp.141-151
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• 2004

As today's business environment has become more and more competitive, forward as well as backward flows of products among members belonging to a supply chain have been increased. The backward flows of products, which are common in most industries, result from increasing amount of products that are returned, recalled, or need to be repaired. Effective management for the backward flows of products has become an important issue for businesses because of opportunities for simultaneously enhancing profitability and customer satisfaction from returned products. Since third party logistics service providers (3PLs) are playing an important role in reverse logistics operations, they should perform two simultaneous logistics operations for a number of different clients who want to improve their logistics operations for both forward and reverse flows. In this case, distribution networks have been independently designed with respect to either forward or backward flows so far. This paper proposes a mixed integer programming model for the design of network integrating both forward and reverse logistics. Since the network design problem belongs to a class of NP-hard problems, we present an efficient heuristic algorithm based on genetic algorithm (GA), of which the performance is compared to the lower bound by Lagrangian relaxation. Finally, the validity of proposed algorithm is tested using numerical examples.

• 웰빙융합연구
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• 제2권2호
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• pp.19-37
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• 2019

Over the last few decades, the atmospheric carbon dioxide emission has been amplified to a great extent in Turkey. This amplification may cause global warming, climate change and environmental degradation in Turkey. Consequently, ecological condition and human life may suffer in the near future from these indicated threats. Therefore, an attempt was made to test the relationship among a number of expected factors and carbon dioxide emissions in the case of Turkey. The study covers the time series data over the period of 1970-2017. We employed the modern econometric techniques such as Johansen co-integration, ARDL bound testing approach and the block exogeneity. The results of the Johansen co-integration test show that there is a significant long-run relationship between carbon dioxide emissions and expected factors. The long-run elasticities of the ARDL model show that a 1% increase in the GDP per capita, electric consumption, fiscal development and trade openness will increase carbon dioxide emissions by 0.14, 0.52, 0.09 and 0.20% respectively. Further, our findings reveal that the environmental Kuznets curve (EKC) hypothesis and inverted U-shaped relationship between carbon dioxide emission and economic growth prevails. Therefore, the EKC hypothesis is valid and prevailing in the Turkish economy. The diagnostic test results show that the parameters of the ARDL model are credible, sTable and reliable in the current form. Finally, Block exogeneity analysis displays that all the expected factors are contributing significantly to carbon dioxide emissions in the Turkish economy.

• 한국경영과학회지
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• 제12권1호
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• pp.157-157
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• 1987

Hydro-electric power generation from multi-purpose dams has been playing important roles in the electric power supply network in Korea. Although the total share of hydro power in national electricity supply now becomes very small, the peak-shaving and frequency control capability of hydro power helps the power company enormously in maintaining the quality of power. But since the company that builds and operates the multi-purpose dams in Korea has to sell all the electricity produced to the monopolistic utility, there have been various problems in justifying the investment, designing pricing mechanism, and controlling operations of the power plants. In addition, economic evaluation of the hydro power has been distorted by a variety of reasons and hence it has been very difficult to encourage effective development and utilization of national water resources. To make the problem worse, both parties are public companies with X-inefficiency problems. Thus, changing environment requires to reengineer the system that governs hydro power generation. We address the problems of Korean hydro-electric power generation system in four areas: the investment justification process, the operations decison right of the hydro power plants, the pricing of the purchased-power, and the negotiation of contract revision. Then we propose improvement directions of new hydro-electric power system in view of static and dynamic efficiency, X-inefficiency and equity.