• Proceedings of the Korean Information Science Society Conference
• /
• 2006.10d
• /
• pp.671-676
• /
• 2006

차세대 이동 네트워크에서는 다양한 무선 접속 기술이 공존하게 된다. 이에 따라, 다양한 무선망을 지원하기 위한 분산방식의 호 수락 제어 구조인 SmartCAC를 제안한다. 우리는 네트워크간 정보 수집이 필요없는 분산방식을 위하여 모바일노드와 네트워크간의 상호동작을 이용한다. SmartCAC는 기본적으로 VHO call과 new call의 구분을 가능하도록 함으로써 VHO call에 handoff를 위해 예약된 채널을 사용할 수 있도록 한다. 또한, 이종망에서 네트워크 필터링을 할 수 있도록 모바일노드의 스피드를 이용한다. 이 때 효율적인 호 수락 제어 방식을 위하여 QoS 요구와 네트워크 사용에 대한 cost를 다룬다. 특히 우리는 이종망의 상태정보를 알 수 없는 모바일 노드가 네트워크의 상태정보를 받아 비교할 수 있도록 확장된 프로토콜을 제시하고, 시뮬레이션 연구에서 복잡도와 프로토콜 효율성에 따른 SmartCAC 평가를 수행하여 복잡도는 낮추고 효율성은 높이는 결과를 얻는다.

• International Commerce and Information Review
• /
• v.14 no.3
• /
• pp.75-96
• /
• 2012

China will replace the global governance of the 21st century in 2050. The rise of China provide the Chinese development model to other developing countries. There are positive element and disability element in China's 'peaceful rise' strategy at the same time. Success of the reform and opening up, market liberalization, economic interdependency, economic globalization, stability of ruling power, consolidation of one-party rule and soft power increase are the promotions of peaceful rise. China's rise as a power nation begins by regaining the superpower status in East Asia. East Asia is a lebensraum assuring a continuing growth to China. For this lebensraum, China shows an interest in institutionalization of regional economic cooperation. The core values of ASEAN, namely the mutual respect, harmonious coexistence, co-prosperity, egalitarianism and pluralism are in conform to China's policy of harmonious world and peaceful coexistence. Through this common value the tension in East Asia will be alleviated. By the regional hegemony strategy based on soft power and economic success, China will try to regain the past glorious position. Attaining status as a coordinator of the world rule will be based on the success of the East Asian strategy. Korea and other neighboring countries will be the best beneficiary countries of the China's rise strategy. China's rising strategy will have a profound effect on neighboring countries especially, Korea. The scale of the movement of goods, labor, and capital between the two countries will become much larger than present. Through regional trade agreements, economic interdependency between Korea and China will increase.

• FLOWER RESEARCH JOURNAL
• /
• v.16 no.1
• /
• pp.76-84
• /
• 2008

This study was conducted to find out the cause of discoloration after pressing yellow-colored flowers. Plant materials used were Lilium Asiatic Hybrids, Oncidium spp., Rosa hybrida, $Tulipa{\times}gesneriana$, Antirrhinum majus, Dianthus caryophyllus, Freesia hybrida, Zantedeschia elliottiana, Gerbera jamesonii, Helianthus annuus, and Ranunculus asiaticus. Thickness, ratio of length to width, and water content of petals did not considerably affect discoloration of pressed flowers. Expression of yellow color in petals was caused by carotenoids in Lilium Asiatic Hybrids, Oncidium spp., Rosa hybrida and $Tulipa{\times}gesneriana$, by flavonoids in Antirrhinum majus, Dianthus caryophyllus, Freesia hybrida and Zantedeschia elliottiana, and by coexistence of carotenoids and flavonoids in Gerbera jamesonii, Helianthus annuus and Ranunculus asiaticus. Carotenoids that expressed yellow color in petals affected significantly on discoloration in pressed flowers containing carotenoids alone or both carotenoids and flavonoids. However, discoloration was hardly ever found in yellow-colored species as affected by flavonoids. Dark treatment was effective for almost perfect preservation in color of pressed flowers, while light treatment resulted in severe discoloration.

• The Korean Journal of Archival Studies
• /
• no.69
• /
• pp.63-91
• /
• 2021

If archives cooperate with other archives in similar fields, various outcomes that are not possible when operated individually can be efficiently achieved. If the archive maintains a cooperative relationship between archives at all times and allocates limited resources to priority and essential activities, efficiency improvement can be expected in the operation of individual archives. If an archive tries to coexist, exchange, or cooperate with other archives, the scope and method will be different from the existing business performance. It will be different from the individually operated archive function in many ways, and new business functions that did not exist before are also required. In this study, by applying the environment model of OAIS, try to reconstruct the environment model of the relational archives that includes the partner of cooperation as a member of the archives that affects the operation of the archives.

• Journal of Intelligence and Information Systems
• /
• v.23 no.1
• /
• pp.69-93
• /
• 2017

The development of ICT has leaded the diversification and changes of supplies and demands in markets. It also caused the creations of a variety of values which are differentiated from those in the existing market. Therefore, a new-type market is created, which can include multi-value chains which are from ICT-based created markets as well as the existing markets. We defined the platform as the new-type market. In the platform, the multi-value chains can be coexisted with multi-values. In true market, when a new-type value chain entered into an existing market, it is general that it can be conflicted with the existing value chain in the market. The conflicted problem among multi-value chains in a market is caused by the sharing of limited market resources like suppliers, consumers, services or products among the value chains. In other words, if there are multi-value chains in the platform, then it is possible to have conflictions, overlapping, creations or losses of values among the value chains. To solve the problem, we introduce coexistence factors to reduce the conflictions to reach market equilibrium in the platform. In the other hand, it is possible to lead the creations of differentiated values from the existing market and to augment the total market values in the platform. In the early era of ICT development, ICT was introduced for improvement of efficiency and effectiveness of the value chains in the existing market. However, according to the changed role of ICT from the supporter to the promotor of the market, ICT became to lead the variations of the value chains and creations of various values in the markets. For instance, Uber Taxi created a new value chain with ICT-based new-type service or products with new resources like new suppliers and consumers. When Uber and Traditional Taxi services are playing at the same time in Taxi service platform, it is possible to create values or make conflictions among values between the new and old value chains. In this research, like Uber and traditional taxi services, if there are conflictions among the multi-value chains, then it is necessary to minimize the conflictions in the platform for the coexistence of multi-value chains which can create the value-added values in the platform. So, it is important to predict and discuss the possible conflicted problems between new and old value chains. The confliction should be solved to reach market equilibrium with multi-value chains in the platform. That is, we discuss the possibility of the coexistence of multi-value chains in the platform which are comprised of a variety of suppliers and customers. To do this, especially we are focusing on the healthcare markets. Nowadays healthcare markets are popularized in global market as well as domestic. Therefore, there are a lot of and a variety of healthcare services like Traditional-, Tele-, or Intelligent- healthcare services and so on. It shows that there are multi-suppliers, -consumers and -services as components of each different value chain in the same platform. The platform can be shared by different values that are created or overlapped by confliction and loss of values in the value chains. In this research, as was said, we focused on the healthcare services to show if a platform can be shared by different value chains like traditional-, tele-healthcare and intelligent-healthcare services and products. Additionally, we try to show if it is possible to increase the value of each value chain as well as the total value of the platform. As the result, it is possible to increase of each value of each value chain as well as the total value in the platform. Finally, we propose a coexistence model to overcome such problems and showed the possibility of coexistence between the value chains through experimentation.

• Polymer(Korea)
• /
• v.29 no.1
• /
• pp.1-7
• /
• 2005

Interpenetrating polymer network (PN) is a mixture of network polymers. The characteristics of IPN material is the control of morphology during the IPN synthesis. By controlling the relative kinetics of chemical reaction (as well as gellation) and phase separation, the morphology of IPN can be controlled to obtain materials with nano-scale domain and also the co-continuous phase. Other important advantage is the fact that the morphology is permanent due to the presence of the physical interlocking between the networks. The combination of hydrophilic polyurethane and hydrophobic polystyrene in IPN form provides enhanced blood compatibility due to the co-existence of the hydrophilic and hydrophobic domains in nano-scale on the surface. The reaction temperature, reaction pressure and the degree of crosslinking were varied during the IPN synthesis and the morphology and blood compatibility of the resulting IPN materials were studied.

• 한국정보교육학회:학술대회논문집
• /
• 2010.01a
• /
• pp.95-99
• /
• 2010

학습자는 교수 학습 상황에서 대부분 배운 내용을 잉킹을 통해 정리한다. 교수자와 학습자 사이에서 잉킹을 통한 상호작용은 매우 중요하며 이와 관련된 다양한 연구가 진행되고 있다. 디지털교과서가 점점 보급되고 있는 상황에서 서책형교과서와 디지털교과서가 공존하는 현재의 과도기적인 교육환경은 일반적인 잉킹과 디지털 잉킹이 공유하고 있다. 이에 디지털 교과서를 활용한 협력적인 학습상황에서 과제를 제시한 후, 일반적인 잉킹과 디지털 잉킹을 학생들에게 그룹별로 각각 적용하도록 환경을 구성하였다. 본 논문에서는 일반적인 잉킹환경과 디지털 잉킹환경이라는 두가지 잉킹 방식을 적용한 후에 학생의 태도 및 판단, 문제 해결의 정확성, 학생의 선호도에 어떤 영향을 미치는지 분석하였다.

• 월간 기계설비
• /
• s.52
• /
• pp.58-66
• /
• 1994

설비설계업계가 UR 타결로 인한 국제화 개방화 시대에 대비하기 위해 하나로 뭉쳤다. 지난 1월초부터 국내 굴지의 5개 기계설비용역회사들이 모여 설비설계의 전산화 및 기술개발을 공동으로 모색하기 위한 모임 CO-ME(Computer Mechanical Engineering)를 조직, 컴퓨터에 의한 설계의 표준화작업을 서두르고 있다. CO-ME의 회장을 맡고 있는 이홍규 기계설비엔지니어링협의회 회장(무애청우엔지니어링 대표)은 '국내 실정에 맞는 CAD를 개발, 설비업계에 종사하는 모든 업체가 손쉽게 사용할 수 있고 나아가 해외에서도 사용 가능한 프로그램을 개발할 계획' 이라면서 '각 업체의 적극적인 지원으로 빠른 성과를 보이고 있으나 투자액이 2억원을 넘고 있지만 아직 회수를 못하고 있어 안타깝다' 고 말하고 '그러나 지금은 고생이 되더라고 개척해 놓으면 개방화시대를 당당히 맞이할 수 있을 것' 이라고 덧붙였다. 이 회장은 또 설비업계의 5개 단체인 기계설비협의회가 상호 협력하여 공존공생할 수 있는 방안을 모색중이라고 밝혔다. 본지는 이홍규 회장의 CO-ME에 대한 자세한 소개를 게재한다.

• Information and Communications Magazine
• /
• v.33 no.8
• /
• pp.36-43
• /
• 2016

최근 인공지능의 급부상과 함께 서비스 로봇은 물론 산업용 로봇에 이르기까지 ICT 융합을 통한 HRI(Human Robot Interaction) 지능화가 가속화되고 있다. 제조, 물류, 공공장소, 가정 등 다양한 환경에서 인간과 가까이 공존하며 상호작용하는 지능로봇의 안전과 성능에 기반한 신뢰성 확보는 성장하는 로봇 시장에 중요한 이슈로 떠오르고 있다. 2014년 실내외에서 운용되는 개인지원로봇에 대한 기본 안전 요구 표준인 ISO 13482가 공표되고 유럽, 일본을 비롯한 세계시장은 국제 표준 에 기반한 서비스 로봇의 인증을 요구하고 있다. 이에 최근 국내 로봇 기업의 해외 시장 진출에 있어 가장 우선적으로 요구받고 있는 안전 요구조건과 검증에 필요한 위험 평가 프로세스를 소개하고 서비스 로봇의 안전 및 성능 평가 기술과 표준에 대하여 살펴본다.

• Pediatric Infection and Vaccine
• /
• v.26 no.3
• /
• pp.129-139
• /
• 2019

The human respiratory tract hosts both pathogenic and commensal bacteria. The development of well-conserved 16S rRNA sequencing and culture-independent techniques has enabled many achievements in the study of the human microbiome. Microbial composition of the respiratory tract in early childhood has been shown to correlate to respiratory health in later stages of life. This review highlights current understandings of respiratory microbiota development in healthy children, examples of microbial interactions, impacts on the host immune system, and the relationship between respiratory tract microbiome and respiratory health.