• 한국컴퓨터정보학회논문지
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• 제15권12호
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• pp.143-150
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• 2010

신속히 변하는 비즈니스환경에서 기업이 살아남기 위해서는 변화하는 환경에 자사의 비즈니스 프로세스를 적응시켜야 한다. 시스템 통합은 이러한 문제를 해결하는 중요한 문제이다. 유연한 비즈니스 프로세스와 통합을 지원하는 IT 표준으로 SOA의 채택은 피할 수 없는 방향이다. 특히 비즈니스 프로세스와 인터페이스의 통합은 점차 중요도가 증대되고 있다. 따라서 비즈니스 프로세스를 쉽고 직관적으로 구현할 수 있는 모델링이 필요하다. 이에 본 논문에서는 기업간의 비즈니스 프로세스를 분석하고 BPEL을 기반으로 서비스 지향 비즈니스 프로세스를 실현수준까지 모델링한다. 또한 비주얼 언어인 UML을 사용하여 높은 수준의 기업문제에서 낮은 수준의 프로세스까지 문제를 보다 비주얼하고 효과적으로 제시한다.

• 한국물환경학회지
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• 제27권5호
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• pp.710-718
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• 2011

An integrated water quality management of reservoir and river would be required when the quality of downstream river water is affected by the discharge of upstream dam. In particular, for the control of downstream turbidity during flood events, the integrated modeling of reservoir and river is effective approach. This work was aimed to develop a laterally-averaged two-dimensional hydrodynamic and water quality model (CE-QUAL-W2), by which water quality can be predicted in the downstream of Yongdam dam in conjunction with the reservoir model, and to validate the model under two different hydrological conditions; wet year (2005) and drought year (2010). The model results clearly showed that the simulated data regarding water elevation and suspended solid (SS) concentration are well corresponded with the measured data. In addition, the variation of SS concentration as a function of time was effectively simulated along the river stations with the developed model. Consequently, the developed model can be effectively applied for the integrated water quality management of Yongdam dam and downstream river.

• 대한안전경영과학회지
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• 제6권1호
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• pp.97-108
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• 2004

This Study will introduce the concept of A TP(A vailable To Promise) and CTP(Capable to Promise) through the existing study, the process analysis of CTP, the modeling of algorithm and the embodiment of system. This research considers the environment of using Job-Shop method. The CTP algorithm models using LPST(Latest Possible Start Time) and EPST(Earliest Possible Start Time) method especially. It is important part of executing CTP systems. The CTP modeling and implementing develops to system which is capable to implement in the various business environment through additional and continuous research.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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• pp.145-150
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• 2002

Web GIS (Geographic Information Systems) service systems provide the various GIS services of analyzing and displaying the spatial data with friendly user-interface. These services are expanding the business domain and many users want to access the distributed various spatial data. But, it is difficult to access diverse data sources because of different spatial data format and data access methods. In this paper, we design and implement web GIS services based on the inter-operability and GML (Geography Markup Language) of OGC(Open GIS Consortium) in web distributed environment. Inter-operability provides unique accessing method to distributed data sources based on OLE DB technology of Microsoft. In addition, GML support web GIS services based on XML. We design these GIS services as components using UML (Unified Modeling Language) of an object-oriented modeling language for specifying, visualizing, constructing, and documenting the artifacts of software system. In addition, they also were developed in object-oriented computing environment, and it provides the interoperability, language-independent, easy developing environment as well as re-usability.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.34.5-34
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• 2002

In this paper we propose a new method for modeling indoor environment with stereo camera and suggest a localization method for mobile robot navigation on the basis of it. From the viewpoint of easiness in map building and exclusion of artificiality, the main idea of this paper is that environment is represented as global topological map and each node has omni-directional metric and color information by using stereo camera and pan/tilt mechanism. We use the depth and color information itself in image pixel as feature for environmental abstraction. In addition, we use only the depth and color information at horizontal centerline in image, where optical axis is passing. The usefulness of this m...

• 한국컴퓨터정보학회논문지
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• 제21권12호
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• pp.107-114
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• 2016

Web system helps high-performance processing for big-data analysis and practical use to make various information using IT resources. The government have started the RPS system in 2012. The system invigorates the electricity production as using renewable energy equipment. The government operates system gathered big-data with various related information system data and the system users are distributed geographically. The companies have to fulfill the system, are available to purchase the REC to other electricity generation company sellers to procure REC for their duty volumes. The REC market operates single auction methods with users a competitive price. But the price have the large variation with various user trading strategy and sellers situations. This papler proposed RPS system modeling and simulation in web environment that is modeled in geographically distributed computing environment for web user with DEVS W/S. Web simulation system base on web service helps to analysis correlation and variables that act on trading price and volume within RPS big-data and the analysis can be forecast REC price.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2017년도 추계학술대회
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• pp.716-717
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• 2017

본 논문은 오픈소스 소프트웨어를 활용하여 IoT와 Cloud 기반의 연계를 지원하는 해양환경 모니터링을 지원할 수 있도록 오픈소스 기반의 모델링 제안한다. 제안 모델은 Apache Hadoop 기반의 시계열 데이터베이스를 이용한 스케일 아웃(Scale out)이 가능하도록 설계하여 수집되는 데이터가 늘어나더라도 컴퓨터 자원을 늘려서 쉽게 처리할 수 있다. 또한 수집되는 데이터를 시각화함으로써 해양 자료를 분석하는데 이용할 수 있다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.1174-1176
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• 2003

Recently 3D city models are required for many applications such as urban microclimate, transportation navigation, landscape planning and visualization to name a few. The existing 3D city models mostly target on modeling buildings, but vegetation also plays an important role in the urban environment. To represent a more realistic urban environment through the 3D city model, in this research, an investigation is conducted to extract the position of trees from high resolution IKONOS imagery along with Airborne Laser Scanner data. Later, a tree growth model is introduced to simulate the growth of trees in the identified tree-positions.

• 대한음성학회:학술대회논문집
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• 대한음성학회 2005년도 추계 학술대회 발표논문집
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• pp.159-162
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• 2005

Identification is the process automatically identify who is speaking on the basis of information obtained from speech waves. In training phase, each speaker models are trained using each speaker's speech data. GMMs (Gaussian Mixture Models), which have been successfully applied to speaker modeling in text-independent speaker identification, are not efficient in insufficient training data environment. This paper proposes speaker modeling method using MLLR (Maximum Likelihood Linear Regression) method which is used for speaker adaptation in speech recognition. We make SD-like model using MLLR adaptation method instead of speaker dependent model (SD). Proposed system outperforms the GMMs in small training data environment.

• 융합보안논문지
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• 제22권2호
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• pp.77-90
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• 2022

현재 국내외 자동차 기업들은 꾸준한 기술 개발을 통해 자율 주행 자동차 산업을 선도하고자 경쟁하고 있다. 이러한 자율 주행 기술은 자동차와 주행 도로 환경과 같이 사물 간의 다양한 연결 의존성을 가지면서 발전하고 있다. 따라서 자동차를 포함한 전체 자율 주행 환경 내에서 사이버 보안 취약점이 발생하기 쉬워지고 있으며, 이에 대한 대비책의 중요성이 커지고 있다. 본 논문에서는 자율 주행 자동차에서 발생할 수 있는 위협을 모델링하고, 자율 주행 자동차의 안전한 보안을 위해 점검이 필요한 요소들을 체크리스트로써 제안한다.