• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.172-174
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• 2004

워크플로우 관리 시스템은 조직의 신속하고 정확한 의사결정을 지원하기 위하여 효율적인 업무 프로세스를 정의하고 이를 관리하며 업무 분석의 최적화를 이룰 수 있도록 지원하는데 목적이 있다. 워크플로우 시스템은 기업 내의 업무 프로세스를 진행하는 데 있어 시스템/애플리케이션 상호간의 데이터의 교환과 더불어 각 업무에 대한 흐름을 어떤 시정 또는 어떤 이벤트에 따라서 어디에서 어디로 업무가 진행되어야 하는지를 정의하고 운용할 수 있는 기능을 담당한다. 본 논문에서는 이러한 시스템과 애플리케이션 상호간의 데이터 교환을 위한 데이터 연동 방법의 아키텍처를 정의하고 이를 구현한다.

• Proceedings of the KSR Conference
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• 2010.06a
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• pp.1106-1111
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• 2010

Conventional traffic network in the urban city has been constructed and operated under systems to collect and transmit based on the roadside AP(Acess Point). But This paper has investigated the new traffic network based on smart station which combined the power network. Futhermore, the smart station can collect and transmit the variable informations and functions that supply the vehicle moving lines, informative collector service and center interoperation etc.

• Proceedings of the Korea Society for Simulation Conference
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• 2002.11a
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• pp.79-83
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• 2002

High Level Architecture (HLA)는 이기종 시뮬레이터 간의 연동을 위한 미들웨어이다. 본 논문에서는 Discrete Event System Specification (DEVS) 형식론을 바탕으로 한 DEVS 모델의 시뮬레이션을 HLA 기반에서 수행하는 방법에 대하여 제시한다. DEVS 시뮬레이션 메시지를 HLA의 서비스를 사용하여 변환하여 기존의 시뮬레이션 알고리즘을 그대로 사용하여 분산 시뮬레이션 할 수 있는 방식에 대하여 기술한다. 또한 모델 사이의 연결 정보를 HLA 환경에서 이용하는 방식에 대하여 기술한다. 제안된 방식을 구현한 DEVSimHLA 시뮬레이션 환경의 구조 및 동작 방식에 대하여 알아보고 이를 이용한 간단한 예제를 보인다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10c
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• pp.586-588
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• 2001

최근 인스턴트 메신저의 사용이 급증하고 있으며 무선에서도 서비스가 시작되고 있다. 현재 무선 인스턴트 메신저는 WAP을 사용하여 서비스되고 있다. 하지만, WAP을 사용할 경우 인스턴트 메신저 서비스를 받기 위해서는 항상 단말기를 무선 인터넷에 연결하여야 하는 제약이 있다. 본 논문에서 제안한 구조는 SMS를 사용하여 무선 인터넷을 연결해야 할 경우에만 서버측에서 단말기에 SMS메시지를 보내게 하고, 이 메시지를 받으면 자동으로 무선 인터넷으로 연결하여 불필요한 무선 인터넷 연결 시간을 줄임으로써 비용절감의 효과를 가지도록 설계하였다.

• Management & Information Systems Review
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• v.3
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• pp.133-150
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• 1999

This paper proposes to study on the interoperation between Relation Database(RDB) and Object-oriented database(OODB). It also describes some Characteristics of OODB and introduces the UniSQL system. This paper suggests a new systemcalled URODB (Unifide Relation & Object-oriented database) that will overcome the limits of OODB, improve the shortcomings of the present RDB, and increase the interchangeability in particular.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.50-52
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• 2011

영상 관제 시스템을 구성할 때 카메라 감시영역 간의 중첩된 영역이 발생한다. 이러한 중첩된 영역을 설정해놓고 카메라를 서로 연동시킬 수 있다. 본 연구에서는 와이드뷰 카메라와 PTZ 카메라의 연동에 의한 실시간 오브젝트 트래킹 시스템을 구현하였다. 본 연구의 결과는 향후 다수의 카메라의 연동으로 확장될 수 있다.

• IEMEK Journal of Embedded Systems and Applications
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• v.10 no.4
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• pp.189-198
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• 2015

Most IoT-related approaches have tried to establish the relation by connecting the network between things. The proposed research will present how the pervasive interaction of eco-system formed by touching the objects between humans and things can be recognized on purpose. By collecting and sharing the detected patterns among all kinds of things, we can construct the environment which enables individualized interactions of different objects. To perform the aforementioned, we are going to utilize technical procedures such as event-driven signal processing, pattern matching for signal recognition, and hardware in the loop simulation. We will also aim to implement the prototype of sensor processor based on Arduino MCU, which can be integrated with system using Arduino-Matlab/Simulink hybrid-interoperation environment. In the experiment, we use piezo transducer to detect the vibration or vibrates the surface using acoustic wave, which has specific frequency spectrum and individualized signal shape in terms of time axis. The signal distortion in time and frequency domain is recorded into memory tracer within sensor processor to extract the meaningful pattern by comparing the stored with lookup table(LUT). In this paper, we will contribute the initial prototypes for the acoustic touch processor by using off-the-shelf MCU and the integrated framework based on Matlab/Simulink model to provide the individualization of the touch-sensing for the user on purpose.

• Journal of the Korea Society for Simulation
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• v.30 no.1
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• pp.139-152
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• 2021

Simulations enable virtually experiencing rare events as well as analytically analyzing such events. Defense modeling and simulation research and develops the virtual and the constructive simulations to support these utilizations. These virtual and constructive(VC) simulations can interoperate to simultaneously virtual combat experience as well as evaluations on tactics and intelligence of combat entities. Moreover, recently, for artificial intelligence researches, it is necessary to retrieve human behavior data to proceed the imitation learning and the inverse reinforcement learning. The presented work illustrates a case study of VC interoperations in the aircombat scenario, and the work analyze the collected human behavior data from the VC interoperations. Through this case study, we discuss how to build the VC simulation in the aircombat area and how to utilize the collected human behavior data.

• Korean Journal of Computational Design and Engineering
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• v.13 no.3
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• pp.217-226
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• 2008

Web Services for CAD (WSC) aims at interoperation with CAD systems based on Web Services. This paper introduces one part of WSC which enables remote users to retrieve assembly model data using Web Services. However, retrieving assembly model data takes long time. To resolve this problem, this paper proposes using parallel Web Services. As assembly models comprise a set of part models, it is easy to separate the problem domain into smaller problems. In addition, Web Services inherently supports distributed computing. This characteristic makes the parallel processing of Web Services easy. Firstly, the implementation of WSC which retrieves assembly model data based parallel Web Services is shown. And then, for the comparison, the experiments on the retrieval of assembly model data based on single Web Services and parallel Web Services are shown.

• ETRI Journal
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• v.37 no.1
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• pp.175-185
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• 2015

This paper presents a system-of-systems (SoS) approach to the formal modeling of a cyber-physical system (CPS) for simulation-based analysis. The approach is based on a convergence technology for modeling and simulation of a highly complex system in which SoS modeling methodology, hybrid systems modeling theory, and simulation interoperation technology are merged. The methodology maps each constituent system of a CPS to a disparate model of either continuous or discrete types. The theory employs two formalisms for modeling of the two model types with formal specification of interfaces between them. Finally, the technology adapts a simulation bus called DEVS BUS whose protocol synchronizes time and exchange messages between subsystems simulation. Benefits of the approach include reusability of simulation models and environments, and simulation-based analysis of subsystems of a CPS in an inter-relational manner.