• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.517-520
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• 2006

기업내부의 최적화를 위하여 도입 된 ERP 는 급변하는 경영환경을 반영하여 전략적 수단으로 기능하는데 까지 발전하여 왔으며, 현재에는 다른 시스템이나 경영 도구들과의 연계성이 더욱 강조되고 있다. 특히 확장된 ERP 의한 영역인 SEM(Strategic Enterprise Management)은 각 기업들이 성과평가와 시나리오 경영 등 최신 경영도구들의 본격적인 도입으로 각광받고 있으며, 경영계획 및 시뮬레이션(BPS : Business Planning & simulation), 경영 통합 및 소싱(BCS : Business Consolidation & Sourcing), 기업실적 모니터(CPM : Corporate Performance Monitor), 이해당사자 관계관리(SRM : Stakeholder Relationship Management) 등의 세부 시스템으로 구성된다. 특히 경영계획 시스템은 개선된 경영계획 프로세스 모델과 시뮬레이션을 바탕으로 구현될 수 있으며, 본 논문에서는 경영계획 프로세스 모델을 바탕으로 이를 시스템화 하기 위한 경영계획 시뮬레이션 시스템 아키텍처와 User Interface를 제안하였다.

• Magazine of the Korean Society of Agricultural Engineers
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• v.45 no.6
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• pp.183-193
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• 2003

Most construction works on the soft ground adopt instrumentation to manage settlement and stability of the embankment. The rapid progress of the information technologies and the digital data acquisition on the soft ground instrumentation has led to the fast-growing amount of data. Although valuable information about the behaviour of the soft ground may be hiding behind the data, most of the data are used restrictedly only for the management of settlement and stability. One of the critical issues on soft ground instrumentation is the long-term settlement prediction. Some observational settlement analysis methods are used for this purpose. But the reliability of the analysis results is remained in vague. The knowledge could be discovered from a large volume of experiences on the observational settlement analysis. In this article, we present a database to store settlement records and data mining procedure. A large volume of knowledge about observational settlement prediction were collected from the database by applying the filtering algorithm and knowledge discovery algorithm. Statistical analysis revealed that the reliability of observational settlement analysis depends on stay duration and estimated degree of consolidation.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.376-379
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• 2016

최근 대규모 사용자를 대상으로 하는 응용 서비스에서 생체인증의 도입이 증가함에 따라, 생체인증을 수행하는 기반 시스템이 요구하는 연산 자원과 저장 능력이 높아지고 있다. 그러나 기존의 연구에서는 이러한 요구사항에 대하여 시스템의 정량적 확대만을 고려하고 있어 많은 컴퓨팅 비용과 에너지 소모를 야기한다. 따라서 본 연구에서는 대규모 사용자를 대상으로 하는 인증 시스템에서 매칭작업에 대한 연산량 최소화와 에너지 사용면에서의 효율성을 위하여 클라우드 기반의 통합인증 시스템을 설계하고 이를 효율적으로 운용하는 방법을 제시한다. 연구의 결과는 인증 서비스의 운용비용 감소와 탄소배출 감소를 이루어 생체인증 관련 산업발전에 기여할 것으로 기대된다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.10 no.7
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• pp.3026-3049
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• 2016

Cloud computing promises high performance and cost-efficiency. However, most cloud infrastructures operate at a low utilization, which greatly adheres cost effectiveness. Previous works focus on seeking efficient virtual machine (VM) consolidation strategies to increase the utilization of virtual resources in production environment, but overlook the under-utilization of backup virtual resources. We propose a heuristic time sharing policy of backup VMs derived from the restless multi-armed bandit problem. The proposed policy achieves increasing backup virtual resources utilization and providing high availability. Both the results in simulation and prototype system experiments show that the traditional 1:1 backup provision can be extended to 1:M (M≫1) between the backup VMs and the service VMs, and the utilization of backup VMs can be enhanced significantly.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2016.05a
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• pp.231-232
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• 2016

Configuration Management (CM) is a process of identifying and documenting the characteristics of a Structures, Systems and Components (SSCs), and of ensuring that changes to these characteristics are properly assessed, approved, issued, implemented and verified. There are requirement management, change control, facility configuration information management for CM activities. In order to improve safety of Nuclear Power Plant(NPP), it is necessary to manage change item systematically. Existing CM concept is focused on the NPP in operation. On the other hand, NPP under construction is difficult to efficiently manage the change because of different change process from varoius stake-holders. This research considers method of consolidation change process for NPP to ensure that approved changes are accurately reflected in the design requirements, facility configuration information, and the physical configuration.

• Management & Information Systems Review
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• v.26
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• pp.261-291
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• 2008

The EU holds about 50% of exports and imports in the world trade of services. The insurance markets have undergone a significant consolidation in solvency rule, cross-border registration, and standardized accounts. In the EU-Korea FTA negotiations the EU is interested in mutual certification of qualifications as well as market liberalization of law, finance and distribution and so forth. When the negotiation with respect to the mutual certification of qualifications comes to a settlement, the two countries will drive it in service areas. Korea should examine european certification regulations and improve domestic insurance-related institutions. France is the focal country of the EU. The paper provides a comparative study of insurance markets and agents in France and Korea. The paper argues that Korea should initiate institutional changes and be transformed into an insurance service exporting country for the specialized insurance agents to move to EU countries.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.05a
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• pp.171-174
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• 2013

Virtualization technology opened a new era in the field of Data intensive, Grid and Cloud Computing. Today's Data centers are smarter than ever leveraging the Virtualization technology. In response to that, Dynamic consolidations of Virtual Machines (VMs) allow efficient resource management by live migration of VMs in the hosts. Moreover, each client typically has a service level agreement (SLA), leads to stipulation in dealing with energy-performance trade-off as aggressive consolidation may lead to performance degradation beyond the negotiation. In this paper we propose a Cloud Based CDN approach for allocation of VM that aims to maximize the client-level SLA. Our experiment result demonstrates significant enhancement of SLA at certain level.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.192-194
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• 2013

가상화 기술의 발달은 클라우드 데이터센터(cloud datacenter)에서의 서버 통합(server consolidation)을 지원하며 이를 통하여 물리적 머신(physical machine, PM) 관리 비용을 감소시킬 수 있다. 그러나 서버가 통합됨에 따라 가상 머신(virtual machine, VM) 간섭이 생길 수 있고 이는 성능 감소의 원인이 된다. 따라서 VM 간섭과 PM 관리 비용을 감소시키는 것은 트레이드오프(trade-off)를 이루며 본 논문에서는 이를 해결하기 위하여 VM 간섭 계측(quantizing)을 위한 기법과 비용 효율적 VM 배치(placement)를 위한 휴리스틱(heuristics)을 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.710-713
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• 2008

디지털 도어락은 사용의 편이성와 안전성으로 인해 보편적으로 사용되고 있다. 본 논문에서는 에디트 거리 알고리즘을 활용하여 비밀번호를 사용하는 디지털 도어락의 보안성을 강화하는 방법을 제안한다. 즉, 에디트 거리 알고리즘을 이용하여 비용을 산출함으로써 사용자가 실수할 수 있는 범위들을 정의하여 인증된 사용자인지 인증 받지 않은 사용자인지 효과적으로 예측한다. 실험을 통해 본 논문에서 제안하는 방법을 통해 비밀번호를 사용하는 디지털 도어락의 보안을 강화할 수 있음을 확인할 수 있다.

• Journal of Information Management
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• v.39 no.2
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• pp.75-94
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• 2008

Korean university libraries has lead the advancement of library service by adopting state-of-art technology for the improvement of information service provision, which therefore contributes to the consolidation of the status of the library as a center of information circulation among related institutions. This paper examines the current conditions of wireless internet service provided by the university libraries. First, it takes 'WDL mobile campus consortium', which is an organized movement with many university libraries involved, and explores their major issues such as wireless internet service environment, platform components, service components and functions, user environment and usage. Finally, this paper makes suggestions for the continuous advancement of the university libraries' wireless services.