• 정보보호학회지
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• 제14권2호
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• pp.6-11
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• 2004

본 고에서는 ISO/IEC의 IDS(Intrusion Detection System) 표준화 동향에 대한 내용을 기술한다. ISO/IEC에서는 IDS를 국제표준 형식이 아닌, 기술문서 형식으로 구성하고 있으며, 이들 문서들은 IDS 기본 구조에 대한 것(IT intrusion detection framework)과 기업 등에서 IDS를 선정하고 배치, 운영하는데 도움을 주는 것(Guidelines for the selection, deployment and operation of IDS)의 크게 2 가지로 구성된다.

• 산업경영시스템학회지
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• 제15권25호
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• pp.91-95
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• 1992

The aircraft schedule is the central of an airline's planning process, aimed at optimizing the deployment of airline's resources in order to maximize profits In this paper, the aircraft schedule is formulated as an integer programming model and the exact algorithm hared on enumeration method is proposed.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 합동 추계학술대회 논문집 정보 및 제어부문
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• pp.278-281
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• 2002

In this paper we propose a controller which has the capability of disturbance measurement calibration for Cds array sensors in a magnetic levitation system. Steady state error due to environment light condition or external disturbance is corrected constantly. The correction is made by the sensors to measure the ball position of the system without additional deployment of sensors.

• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2003년도 종합학술대회 논문집
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• pp.249-254
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• 2003

Object caching is a desirable feature to improve the both scalability and performance of distributed application systems for information infrastructure, the information management system leveraging the power of network computing. However, in order to exploit such benefits, we claim that the following problems: cache server placement, cache replacement, and cache synchronization, should be considered when designing any object cache system. We are under developing DOC: a Distributed Object Caching, as a part of building our information infrastructures. In this paper, we show how each problem is inter-related, and focus to highlight how we handle cache server deployment problem

• 산업경영시스템학회지
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• 제18권36호
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• pp.113-120
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• 1995

Much of the past work regarding repairable item stockage has concentrated on the development of models and policies for systems in steady state. However, there are important situations in which the transient behavior is most important. A dramatic example of this is the potential dynamic behavior exhibited by demands and service in the deployment of an Air Force squadron at the onset of a conflict. The purpose of this paper is to derive some probability distributions necessary for providing an integrated approach for a multi-echelon inventory system with nonstationary demands and service rates.

• 전기학회논문지P
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• 제65권3호
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• pp.194-198
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• 2016

The electric power industry have recently been building out Smart Grids, a two-way electricity grid that connects power consumers and producers to a network that enables one to respond quickly to any eventuality. The construction of a two-way electricity grid means that the power control process becomes unified, from what used to be separate processes that originate individually from the consumption phase and the production and supply phases. The role of power control that takes place within each section of the power system may be independent. However, this does not mean the independent control sections are operated individually, but are configured to meet a single target and purpose. Each control section possesses enough degree of independency to respond to eventualities that may occur within different stages of the power system, but at the same time, possesses unified system elements for the stability of the entire power system. From this perspective, Smart Grids are widely regarded as the most rational power industry operation plan. A variety of different control and communication systems can be applied for an effective deployment of Smart Grids. Recently, we have seen systems such as PMS(Power Management System) and PAS(Process Automation System) applied in the deployment of Smart Grids, which are developed from the techniques utilized in the industry. The PMS is attracting particular attention for its power operations management ability. In this study, we propose plans for improvement in the rational development of power system controls through case studies of live PMS operations.

• International Journal of Contents
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• 제10권4호
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• pp.11-17
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• 2014

The influence of acquisition environment on music score images captured by a camera has not yet been seriously examined. All existing Optical Music Recognition (OMR) systems attempt to recognize music score images captured by a scanner under ideal conditions. Therefore, when such systems process images under the influence of distortion, different viewpoints or suboptimal illumination effects, the performance, in terms of recognition accuracy and processing time, is unacceptable for deployment in practice. In this paper, a novel, lightweight but effective approach for dealing with the issues caused by camera based music scores is proposed. Based on the staff line information, musical rules, run length code, and projection, all regions of interest are determined. Templates created from inverse filter are then used to recognize the music symbols. Therefore, all fragmentation and deformation problems, as well as missed recognition, can be overcome using the developed method. The system was evaluated on a dataset consisting of real images captured by a smartphone. The achieved recognition rate and processing time were relatively competitive with state of the art works. In addition, the system was designed to be lightweight compared with the other approaches, which mostly adopted machine learning algorithms, to allow further deployment on portable devices with limited computing resources.

• 한국전자통신학회논문지
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• 제8권6호
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• pp.873-879
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• 2013

본 논문에서 고급 업무형 커뮤니케이션(UC) 기능은 통신활동의 중복, 낭비, 재작업을 줄여 프로세스 개선에 대한 높은 효율을 제공한다. UC 앱 개발을 통해 메시지 전송, FMC 통화기능, 스케줄 관리 기능 개발과 UC 서버 구축을 위한 조직도 DataBase구축, 검색을 위한 JSP 구현, XMPP를 이용한 메시지 전송 시스템 구축한다. IP-PBX의 IP 네트워크에서 구동되는 UC 애플리케이션의 기반에서 인프라의 활용도를 높이고 실제 생활에서 필요한 서비스를 제공하는 시스템을 설계 구현한다.

• Smart Structures and Systems
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• 제10권3호
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• pp.209-228
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• 2012

Structural health monitoring with wireless sensor networks has received much attention in recent years due to the ease of sensor installation and low deployment and maintenance costs. However, sensor network technology needs to solve numerous challenges in order to substitute conventional systems: large amounts of data, remote configuration of measurement parameters, on-site calibration of sensors and robust networking functionality for long-term deployments. We present a structural health monitoring network that addresses these challenges and is used in several deployments for monitoring of bridges and buildings. Our system supports a diverse set of sensors, a library of highly optimized processing algorithms and a lightweight solution to support a wide range of network runtime configurations. This allows flexible partitioning of the application between the sensor network and the backend software. We present an analysis of this partitioning and evaluate the performance of our system in three experimental network deployments on civil structures.

• 정보과학회 논문지
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• 제42권11호
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• pp.1423-1429
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• 2015

최근, 인터넷이 확장됨에 따라 새로운 가치를 생산하는 활용성이 증가되고 있다. 사물인터넷(Internet of Things)은 미래인터넷의 새로운 개념으로, 네트워크 물리적 객체들의 상호연결을 강조하여 최근 크게 주목받고 있으나, 사물인터넷상에서 서로 다른 서비스품질 요구를 만족시키기란 상당히 어렵다. 본 논문에서는, 사물인터넷 시스템의 다양한 서비스품질요구를 만족시킬 수 있는 효율적인 자원할당 방법을 제시한다. 제안된 방법은 마르코프 게임 모델에 기초하여 시스템 성능을 최대화할 수 있도록 효율적으로 사물인터넷 자원들을 할당한다. 시뮬레이션 결과, 제안된 방법은 현재의 사물인터넷 상황에서 기존의 방식에 비해 뛰어난 성능을 보여준다.