• Journal of KIISE:Computing Practices and Letters
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• v.14 no.9
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• pp.864-875
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• 2008

The advent of the ubiquitous environments, the sub-networks is various to offer ubiquitous environments. There are diversify sub-networks such as Jini, UPnP, DPWS. To realize ubiquitous, any users can discovery and services in any sub-networks. However, they cannot support these requirement, because they don't do interoperability with other networks. In this paper, we introduce a Jini adaptor of WSUN(Web Services on Universal Networks). The WSUN is the framework which supports interoperability through the intermediation of Web services. The Jini adaptor has there roles: Lookup Service, Jini Client, Web Service Client. It converts Jini services to Web services and registers them. to UDDI registry. In addition the Jini adaptor process the events which happening in Jini system then that is utilized when another sub-network client search a service. Because the adaptor updates a service status continuously, it is possible that provides a service discovery and use to apply the status information. In conclusion, a Jini client is able to find and use a service which exists in heterogeneous sub-network through the Jini adaptor.

• 한국공간정보시스템학회:학술대회논문집
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• 2005.11a
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• pp.61-66
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• 2005

Spatiotemporal data mining represents the confluence of several fields including spatiotemporal databases, machine loaming, statistics, geographic visualization, and information theory. Exploration of spatial data mining and temporal data mining has received much attention independently in knowledge discovery in databases and data mining research community. In this paper, we introduce an algorithm Max_MOP for discovering moving sequences in mobile environment. Max_MOP mines only maximal frequent moving patterns. We exploit the characteristic of the problem domain, which is the spatiotemporal proximity between activities, to partition the spatiotemporal space. The task of finding moving sequences is to consider all temporally ordered combination of associations, which requires an intensive computation. However, exploiting the spatiotemporal proximity characteristic makes this task more cornputationally feasible. Our proposed technique is applicable to location-based services such as traffic service, tourist service, and location-aware advertising service.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04a
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• pp.340-342
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• 2001

본 논문에서는 홈네트워크에서 반드시 필요하게될 무선데이타통신 전송기술로서 블루투스 인터페이스의 상위 프로토콜 스택중 소프트웨어와 관련된 HCI(Host Controller Interface), L2CAP(Logical Link Control and Adaptation Protocol), SDP(Service Discovery Protocol)레이어에 관해 정의를 하고, 홈네트워크 미들웨어로서 자바를 기반으로한 Jini 시스템의 서비스제공자(services) 서비스관리자(Lookup service), 서비스이용자(client)간의 통신 구조에 대해 살펴본다. 블루투스 인터페이스를 이용한 Jini 시스템에서 client에 PDA, service로는 프린터로 구성하여 이에 기반한 여러 프로토콜의 사용을 설명하고 현재 SA-1110 보드상의 Jini 시스템을 구현중인 모델의 구성과 원격제어를 위한 향후 확장계획에 대해 간단하게 소개한다.

• Journal of Korean Elementary Science Education
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• v.25 no.2
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• pp.191-205
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• 2006

The purpose of this study was to explore strategies used by pre-service elementary science teachers in planning a science lesson. The participants were six senior students from a national university of education located in the midwestern area of Korea. Data regarding their planning strategies were gathered through both thinking-aloud and observation. Research findings suggest that: three of the teachers had little understanding of the necessity of reviewing unit contents or prior learning for planning a science lesson; five student teachers relied heavily on learning objectives presented in teachers' guidebooks without considering their appropriateness; all teachers exhibited an intention of composing different activities or teaching approaches from teachers' guidebooks; only two teachers thought about learners' prior knowledge or understanding levels; five and three teachers had poor understanding of discovery learning models and importance of teacher's questioning, respectively; and five teachers paid little attention to assessment.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.04a
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• pp.469-472
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• 2002

자바의 Jini 기술을 이용하여 네트웍에 분산된 Java 컴포넌트 소프트웨어를 동적으로 통합하기 위한 방법론을 제안한다. 통합대상 개별 컴포넌트는 Jini 인터페이스(interface)를 구현하도록 설계하거나 혹은 기존 컴포넌트를 포장한 것으로서 네트웍에 구성된 Jini federation 에 Jini Service 오브젝트로서 공개된 것이다. 통합의 주체는 Service Discovery Manager 와 같은 특별한 Jini 헬퍼클래스 기반으로 작성된 클라이언트 프로그램이다. 클라이언트는 지정된 조건 (Entry 오브젝트)을 충족하는 컴포넌트 소프트웨어를 네트웍으로부터 Service Template를 이용하여 검색, 다운로드 한 후 단일한 GUI 를 가지는 프로그램에 통합한다. 필요한 컴포넌트만을 필요할 때 사용할 수 있고, 영구 설치의 필요성이 없으므로 소프트웨어 개발과 배포에 대한 새로운 관점을 제시할 것으로 판단된다.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07a
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• pp.40-42
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• 2005

Jini는 네트워크를 통해 사람이나, 기기, 프로그램이 특정 자원을 찾거나 사용하고자 할 때, 관리자의 개입 없이 유연하게 동작하게 하는 분산 미들웨어의 하나이다. 기존의 Jini 서비스는 Lookup Service 데몬(Httpd, Reggie. Rmid)이 실행되어 Discovery, Join, Lookup, Service Invocation의 과정을 통해 이루어지는데, 데몬 fault 발생 시 어떠한 해결점이 없다는 것이 문제점이다. 이에 본 논문에서는 Jini 서비스 데몬 손실로 인한 Jini 서비스의 Fault 문제를 해결하기 위해 Grid환경 하에서 그리드 서비스를 사용하여 Jini 서비스에 Fault Tolerance를 제공하는 시스템의 구조와 방법을 제시한다.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.35 no.11
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• pp.3-12
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• 2019

This study is concerning on the Space Modification and Facilities Characteristics of the Busan Exported-cow Quarantine Service Station(1909) before and afrter on the limits of 1945. For on this purpose, National Archives & Records Service(DJB0002115), field survey, documents records and modern aged map were analysised by each period phases, 1909, 1924, 1946, 1951 and now so on. At results on this study is the discovery on the meaning of this placeness, Space Modification and Facilities Characteristics till now before the 120 years ago. And this place has been comprehenive meaning unique dwelling form and almost rarely existing refuge village of Korea War in Korea.

• International Journal of Computer Science & Network Security
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• v.22 no.3
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• pp.95-100
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• 2022

Cloud computing platform is a shared pool of resources and services with various kind of models delivered to the customers through the Internet. The methods include an on-demand dynamically-scalable form charged using a pay-per-use model. The main problem with this model is the allocation of resource in dynamic. In this paper, we have proposed a mechanism to optimize the resource provisioning task by reducing the job completion time while, minimizing the associated cost. We present the Cooperative Agents Dynamic Resource Allocation and Monitoring in Cloud Computing CADRAM system, which includes more than one agent in order to manage and observe resource provided by the service provider while considering the Clients' quality of service (QoS) requirements as defined in the service-level agreement (SLA). Moreover, CADRAM contains a new Virtual Machine (VM) selection algorithm called the Node Failure Discovery (NFD) algorithm. The performance of the CADRAM system is evaluated using the CloudSim tool. The results illustrated that CADRAM system increases resource utilization and decreases power consumption while avoiding SLA violations.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.11a
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• pp.157-160
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• 2003

최근 그리드 미들웨어 개발 연구는 과학적 어플리케이션뿐만 아니라 상업적인 비즈니스 어플리케이션에서 활용가능하도록 웹서비스(Web service) 기술을 활용하고 있다. 이를 통해 정의된 그리드 서비스 구조를 Open Grid Service Architecture(OGSA)라고 한다. OGSA 를 통해 정의된 그리드 서비스 개념은 GGF 를 통해 OGSI 라는 표준 기술 명세서로 채택되었다. OGSI 를 지원하는 그리드 서비스는 확장성있고 상호운용성을 높여 다른 서비스와의 연동 및 통합을 쉽게 이루게 한다. 본 논문에서는 기존의 그리드 정보 서비스를 OGSI 기반의 서비스 구조인 Grid Advanced Information Service(GAIS)로 재구성한다. CAIS 는 그리드 미들웨어의 기본 서비스로써 다음의 특징을 가진다. 우선, 기존의 GT3 기반의 그리드 정보 서비스와의 서비스 인터페이스 측면에서 호환성을 가지면서, 내부적으로 동적 Virtual Organiaation(VO)관리 기능을 추가로 가진다. 그리고, 여러 GAIS 들간의 VO 정보를 관리할 수 있도록 Peer-to-peer 기반의 정보 분산기능을 가진다. 또한, GAIS 내 등록된 서비스들에 대해서는 Service data에 따른 그룹화를 통해 서비스 discovery기능을 강화하게 된다. 그리드 사용자는 GAIS 를 통해 다양한 VO 에 대한 정보를 검색하고, VO 의 생성 및 참여할 수 있고, 자신이 속한 VO 에 대하여 효율적으로 자원정보 및 서비스 데이터(Service Data)를 접근할 수 있다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.7
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• pp.1260-1266
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• 2007

The information and communication technology under developing from was time of broadcast and communication Convergence. There is iCOD with representative service of broadcast and communication Convergence. This the superhigh speed Internet about under using is the service which provides information service, the video contents and broadcasting and others with TV. But this service when it searches broadcasting information of different Channel, again must analyze the stream of broadcasting there is a problem point. This thesis hereupon iCOD broadcasting services it searched efficiently from the terminal and in order the fact that it selects from iCOD broadcasting streams SI information about under extracting SD&S base iPG XML documents it created and it transmits with the distant mote cast the method which and it planned it embodied.