• Electronics and Telecommunications Trends
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• v.25 no.6
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• pp.157-166
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• 2010

GENI 인프라스트럭처의 기본 구조와 연구 개발 현황을 GENI 표준 규격 문서와 세부 구현 결과를 중심으로 정리한다. 최근 발표된 SFA 2.0과 GENI Aggregate Manager API 1.0을 참고하여 GENI 전체 시스템 구조와 이기종 플랫폼의 상호 연동을 위한 인터페이스를 살펴보고, 이러한 규격에 대해 GENI에서 제시하는 참조 구현(GCF, Omni), ProtoGENI의 AM/CM API 및 참조 구현인 ReferenceCM와 관련 도구도 간략히 정리한다. 마지막으로 최근 활발히 진행되는 페더레이션 관련 연구 동향도 살펴보고 향후 계획을 전망해 본다.

• Proceedings of the Microbiological Society of Korea Conference
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• 2009.05a
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• pp.42-43
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• 2009

• The Magazine of the IEIE
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• v.34 no.4 s.275
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• pp.62-70
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• 2007

• Proceedings of the Materials Research Society of Korea Conference
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• 1998.08a
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• pp.104.2-104
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• 1998

• Korean Journal of Microbiology
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• v.26 no.3
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• pp.270-277
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• 1988

Microorganisms isolated from soil (150 strains), fungi (39 strains), yeasts (9 strains) and Streptomyces species (39 strains) were assayed for L-phenylalanine ammonia-lyase(PAL) activity. 17 strains of fungi and 46 strains of soil isolates were proved to produce PAL, Aspergillus panamensis, Penicillium varioti and 11 soil isolates showed comparatively large PAL activity. When PAL activity was assayed with cell-free extracts of these 13 strains and 7 strains of Rhodotorula and Rhodosporidium geni, Rhodosporidium toruloides (IFO 0559) showed the highest PAL activity with 0.333 units per g of the wet cell weight.

• Journal of Digital Convergence
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• v.12 no.8
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• pp.309-319
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• 2014

Virtual Network service is a key characteristics of future Internet which is debate internationally. There are two kinds of network virtualization technologies considered lately: network functions virtualization and virtual network approaches. Several national wide research networks including US's GENI project have experimented technologies for future Internet and in particular network virtualization is one of key issues. Representative Korean research network, KREONET, is working on deploying virtual network framework as a preliminary for future Ineternet using the virtualization model of SDN/OpenFlow which is typical network model of future Internet. This paper proposes a stepwise model to bring virtual network services in KREONET. Firstly, we requirements of KREONET users' virtual network service and network resource management and network deploying virtual network. Finally, we verify the adequacy of our virtual network model for KREONET.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37B no.10
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• pp.877-888
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• 2012

Network virtualization technology is a crucial research issue of Future Internet which pursues a service-oriented architecture so-called NaaS (Network as a Service) or SDN (Software Defined Network). Network virtualization is expected to play an important role in Future Internet researches as a network testbed technology which enables innovative protocols to be experimented independently on a common testbed environment. We propose a control framework in order to provide user defined topology and bandwidth services with network virtualization and to separate and manage multiple-user traffics in a small and medium scale - single domain research network. The proposed framework (VIMS; Virtual network Integrated control and Management System) supports testbed expansions without any changes of heterogeneous virtual network support equipments through accommodation of each equipment's control plane. The framework shows a feasibility through applied to KOREN and we describe the differences and further study directions for improvement the framework comparing with GENI control framework.

• Journal of Communications and Networks
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• v.13 no.6
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• pp.591-601
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• 2011

Today's Internet which provides communication channels with best-effort end-to-end performance is rapidly evolving into an autonomic global computing platform. Achieving autonomicity in the Future Internet will require a performance architecture that (a) allows users to request and own 'slices' of geographically-distributed host and network resources, (b) measures and monitors end-to-end host and network status, (c) enables analysis of the measurements within expert systems, and (d) provides performance intelligence in a timely manner for application adaptations to improve performance and scalability. We describe the requirements and design of one such "Future Internet performance architecture" (FIPA), and present our reference implementation of FIPA called 'OnTimeMeasure.' OnTimeMeasure comprises of several measurement-related services that can interact with each other and with existing measurement frameworks to enable performance intelligence. We also explain our OnTimeMeasure deployment in the global environment for network innovations (GENI) infrastructure collaborative research initiative to build a sliceable Future Internet. Further, we present an applicationad-aptation case study in GENI that uses OnTimeMeasure-enabled performance intelligence in the context of dynamic resource allocation within thin-client based virtual desktop clouds. We show how a virtual desktop cloud provider in the Future Internet can use the performance intelligence to increase cloud scalability, while simultaneously delivering satisfactory user quality-of-experience.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.10
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• pp.1947-1957
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• 2015

CCN networking is one of the future internet. With the rapid development of network platforms emerged a wide range of services through a virtual network environment. The performance of CCN in the high bandwidth delay is important to provide various services between nations. We can check the high bandwidth delay product in federation. Federation between the nations has the advantage of being effective to do a various services for the users, and the remote heterogeneous physical hardware engine supports various environments. Data transmission delay can be occur in long distance network even though the network is federated network. In this paper, we propose CCN-Helper protocol for data transmission delay in ling distance networks. We connect from KREONET in Korea to iLab.t in Belgique in order to test CCNx over heterogeneous federated environment.

• Information and Communications Magazine
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• v.25 no.3
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• pp.42-47
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• 2008

현재 국제적으로 본격화되고 있는 미래인터넷기술의 개념을 실증시험하고 연구, 개발에 필수적인 대규모 네트웍 기반의 미래인터넷 테스트베드 구축동향을 살펴보고 우리나라가 보유하고 있는 네트웍 테스트베드인 KOREN(Korea Advanced Research Network)을 기반으로 하는 선도적인 미래인터넷 테스트베드 구축을 위한 활동에 대하여 소개하고자한다. 서론에서는 미래인터넷기술의 연구를 추진하게 된 각국의 환경과 동기 및 현재 전략적인 추진현황에 대하여 알아보고 추진계획 및 예산 규모에 대하여 기술한다. 또한 미래인터넷테스트베드의 요구사항에 대하여도 소개한다. 본론에서는 가장 잘 정리된 미국 GENI의 미래인터넷테스트베드의 기능구조에 대하여 알아보고 우리나라가 미래인터넷기술을 본격적으로 시험하기 위하여 선도적으로 추진하고 있는 KOREN 기반의 미래인터넷테스트베드에 대하여 소개하고자 한다. 결론에서는 향 후 발전방향과 우리나라가 지향하여야 할 추진방향에 대하여 제안을 하고자 한다.