• Journal of the Korea Society for Simulation
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• v.24 no.4
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• pp.11-21
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• 2015

If the cloud computing environment is not sufficiently provide the required resources due to the number of virtual server to process the request, may cause a problem that the load applied to the specific server. Migration administrator receive the resources of each physical server for improving the efficiency of the virtual server that exists in the physical servers, and determines the migration destination based on the simulation results. But, there is more overhead predicting the future resource consumption of all the physical server to decide the migration destination through the simulation process in large and complex cloud computing environments. To solve this problem, we propose an improved prediction method with the simulation-based approach. The proposed method is a fuzzy-logic based priority model for VM migration. We design a proposed model with the DEVS formalism. And we also measure and compare a performance and migration count with existing simulation-based migration method. FPLM shows high utilization.

• The KIPS Transactions:PartA
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• v.11A no.4
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• pp.257-266
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• 2004

Mobile agents are defined as processes which can be autonomously delegated or transferred among the hosts in a network in order to perform some computations on behalf of the user and co-operate with other agents. Currently, mobile agents are used in various fields, such as electronic commerce, mobile communication, parallel processing, search of information, recovery, and so on. In pure P2P network environment, if mobile agents that require computing resources rashly migrate to another peers without consideration on the peer's capacity of resources, the peer may have a problem that the performance of the peer is degraded due to lack of resources. To solve this problem, we propose resource reservation based load balancing scheme of using RMA(Resource Management Agent) that monitors workload information of the peers and that decides migrating agents and destination peers. In mobile agent migrating procedure, if the resource of specific peer is already reserved, our resource reservation scheme prevents other mobile agents from allocating the resource.

• The Journal of Korean Association of Computer Education
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• v.18 no.2
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• pp.83-90
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• 2015

In an virtualization environment, several virtual machines use physical resources together. If a specific virtual machine uses to much of the computing resources, other machines may not be working properly. There are various method to solve this problem. Most representative study is to migrate a specified virtual machines to a different server, a target server. In this study, server load can be transferred to a target server by the remigrate of the load imposed on virtual machine. It is still problematic that virtual machine has to remigrate to a different server. This thesis has proposed the algorithm determining the remigration targets by applying dynamic thresholds to solve those problems. The migration algorithm applies dynamic thresholds according to the following criteria. Firstly, the usage of CPU, network and memory; secondly, decide the set of artificial machine and the target server based on the resources surpassed thresholds; thirdly, determine artificial machines based on the resource usage in the target server.

• Proceedings of the Korean Society of Computer Information Conference
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• 2012.01a
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• pp.5-6
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• 2012

본 논문에서는 가상머신에서 수행되는 어플리케이션의 서비스 품질을 보장하고, 클라우드 클러스터의 운영비용을 절감시킬 수 있는 자원 할당 감축기법을 제안한다. 이 기법은 가상머신의 자원 사용량 변화 추세를 분석하고 이를 토대로 확률적인 접근을 사용하여 새로운 자원 할당 감축량을 결정한다. 가상머신의 자원 사용량이 할당량을 초과하면 가상머신의 이주가 필요하다. 이때 발생하는 다운타임동안 가상머신의 어플리케이션은 서비스를 수행할 수 없기 때문에 클라우드 시스템의 성능이 저하된다. 따라서 성능평가에서는 가상머신의 자원 사용량이 할당량을 초과하는 횟수를 측정하여 Greedy 기법과 비교 평가함으로써 제안한 기법이 자원 할당 감축에 우수함을 검증한다.

• Proceedings of the Korean Society of Crop Science Conference
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• 2021.10a
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• pp.167-167
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• 2021

• Proceedings of the KSEEG Conference
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• 1999.04a
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• pp.210-211
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• 1999

• Proceedings of the Plant Resources Society of Korea Conference
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• 2002.04a
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• pp.8-17
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• 2002

• Journal of Korean Library and Information Science Society
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• v.37 no.2
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• pp.291-315
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• 2006

The goal of this study is to investigate and analyse the status quo of the HANGEUL publications, and management of the HANGEUL information resources in Kazakhstan and Uzebekistan of the Central Asia. Documents analysis, and direct observation and interviews were used as research methods. This paper consists of as follows setting up a goal of construction, defining and developing the HANGEUL information resources produced and collected by the Korean in Kazakhstan and Uzebekistan, and analysing information resources management, and a conclusion and suggestion.

• Journal of Korean Library and Information Science Society
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• v.43 no.4
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• pp.403-425
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• 2012

This research aims to present a development plan on the Korean diaspora information resource management in a viewpoint document information and archives. This study consists of two aspects : a document investigation based on Korean diaspora and information resource and in a practical examine based on a spot of life, settlement, and movement of overseas. A lot of Korea Diaspora have immigrated to Japan, China and Russia mostly with other people in the political and economic dominant cause. They are produced a various of document information and was formed information resource management and archives in a library, a newspaper office and a publishing company. The result of this research was looked forward to help to R&D of information resource management in values and competencies for Korean diaspora.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2002.04a
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• pp.52-53
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• 2002