• Title/Summary/Keyword: Active Component

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Component Classification and Specification on Active Security Architecture (능동보안 아키텍쳐를 위한 컴포넌트 분류 및 명세방법)

  • 김상영;김재웅;황선명
    • Journal of Korea Multimedia Society
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    • v.7 no.1
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    • pp.113-125
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    • 2004
  • Active networks aim to provide a software framework that enables active network applications to customize the processing their communications. Active security component architecture focuses on the support of reuse system by active security component. The architecture is standard layer to acquire, understand, and assemble component, and it has to support a guideline for component identification, search and customization. In this paper we present the active security architecture as a standard model of discrete active network solution, and we propose the method for component classification and specification.

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Development of Active Data Mining Component for Web Database Applications (웹 데이터베이스 응용을 위한 액티브데이터마이닝 컴포넌트 개발)

  • Choi, Yong-Goo
    • Journal of Information Technology Applications and Management
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    • v.15 no.2
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    • pp.1-14
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    • 2008
  • The distinguished prosperity of information technologies from great progress of e-business during the last decade has unavoidably made software development for active data mining to discovery hidden predictive information regarding business trends and behavior from vary large databases. Therefore this paper develops an active mining object(ADMO) component, which provides real-time predictive information from web databases. The ADMO component is to extended ADO(ActiveX Data Object) component to active data mining component based on COM(Component Object Model) for application program interface(API). ADMO component development made use of window script component(WSC) based on XML(eXtensible Markup Language). For the purpose of investigating the application environments and the practical schemes of the ADMO component, experiments for diverse practical applications were performed in this paper. As a result, ADMO component confirmed that it could effectively extract the analytic information of classification and aggregation from vary large databases for Web services.

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An Over Current Protection Scheme for Hybrid Active Power filter

  • Lee Woo-Cheol;Chae Beom-Seok;Hyun Dong-Seok;Lee Taeck-Kie
    • Proceedings of the KIPE Conference
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    • 2001.10a
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    • pp.571-575
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    • 2001
  • A protection scheme for hybrid active power filters, which is combined shunt passive filter and small rated series active filter, is presented and analyzed in this paper. The proposed series active power filter operated as a high impedance 'k($\Omega$)' to the fundamental component when over current occurs in the power distribution system, and three control strategies are proposed in this paper. The first is the method by detecting the fundamental source current through the p-q theory, the second is the method by detecting the fundamental component of load current in Synchronous Reference Frame (SRF) and the third is the method by detecting the input voltage. When the over current occurs in the power distribution system, the proposed scheme protects the series active power filter without additional protection circuits. The validity of proposed protection scheme is investigated through experimental result for the prototype hybrid active power filter system.

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Rule-Based Cooperation of Distributed EC Systems

  • Lee, Dong-Woo
    • International Journal of Contents
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    • v.5 no.3
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    • pp.79-85
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    • 2009
  • Emergent requests or urgent information among enterprises require their intimate collaboration in B2B EC (electronic commerce). This paper analyzes the needs of intimate cooperation of distributed EC systems in terms of business contracts and presents an active rule-based methodology of close cooperation among EC systems and an active rule component to support it. Since the rule component provides high level rule patterns and event-based immediate processing, system administrators and programmers can easily program and maintain intimate cooperation of distributed EC systems independently to the application logic. The proposed active rule component facilitates HTTP protocol. Its prototype is implemented in B2B EC environment and evaluated using basic trigger facility of a commercial DBMS.

Development of the Railroad Geotechnical Information Management System using ActiveX Component (ActiveX 컴포넌트를 이용한 철도 지반정보 관리프로그램의 개발)

  • Hwang Seon Keun;Lee Seong Hyeok;Kim Hyun Ki;Kim Jung Moo
    • Proceedings of the KSR Conference
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    • 2003.10b
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    • pp.436-441
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    • 2003
  • The railroad geotechnical management system using ActiveX component is developed In this study. Component software is realized as a way that can offer good productivity and stability in software production through maximizing the reusability of software. Developed component software is very useful in saving to much time required for the development, increasing the re-usage rates, utilizing the component per function and substantially reducing the expenses for the tests and the error corrections. In addition, since it is easy to replace with other types of components that satisfy the needs of users, we can easily customize the applications.

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Compensating Performance Evaluation of Active Power Filters Using the Expanded 3-D Current Coordinates (확장된 3차원 전류 좌표계에 의한 능동전력필터의 보상성능 평가)

  • Kim, J.G.;Lim, Y.C.;Jung, Y.G.
    • Proceedings of the KIEE Conference
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    • 2003.04a
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    • pp.292-295
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    • 2003
  • Conventional methods in time / frequency domain for evaluating the compensation performance of active power filters are not provided easy solutions. So, the authors have previously proposed 3-D current coordinates which is composed into active component, fundamental reactive component and distorted component of nonlinear loads current. This method has excellent performance, but can not evaluate the characteristics of nonlinear load current whether it is inductive or capacitive. Therefore, To overcome problems mentioned previously, this paper deals with the simple Average power theory and the expanded 3-D current coordinates for evaluating the compensation performance of active power filters. To confirm the validity, active power filters simulator is developed using C-language. From the simulation, results are discuss their utility.

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Implementation of Distributed Computing System using ActiveX Technology (ActiveX 기술을 이용한 분산 컴퓨팅 시스템 구현)

  • Song, Min-Gyu;Byun, Do-Young;Je, Do-Heung;Kim, Kwang-Dong;Roh, Duk-Gyoo;Oh, Se-Jin;Lee, Bo-Ahn
    • Proceedings of the KIEE Conference
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    • 2004.11c
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    • pp.462-464
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    • 2004
  • ActiveX is the general name for a set of Microsoft Technologies that allows users to re-use code and link individual programs together to suit their computing needs. In addition ActiveX technology Provides a standard model for interapplication communication that different programming language. ActiveX is based on COM(Component Object Model), the COM standard allow developer to create code and application from a multitude of different languages and build a defined interface to that code, making it easily accessible by other application. By using ActiveX, user can access the functionality of other applications running remote computer distributed through the network and communicate over the network to build distributed applications. LabVIEW provides access to other Windows applications using ActiveX technologies. So in this paper we implement distributed application using ActiveX technology for remote control and monitoring.

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Isolation of Lymphocyte Proliferating Polysaccharide from Mori Cortex Radicis (상백피로부터 분리한 면역세포 증식작용을 지닌 다당체)

  • Kim, Chul-Young;Lee, Eun-Ju;Kim, Hwan-Mook;Huh, Hoon
    • YAKHAK HOEJI
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    • v.42 no.4
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    • pp.467-471
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    • 1998
  • Numerous efforts have been made to isolate immunologically active component from Mori Cortex Radicis, since it has been used in the treatment of bronchial asthma, and immune dis order in human. Recently, we reported the purification of an anti-allergic component of the Mori Cortex Radicis. Among the fractions we prepared in the previous study, a fraction was active in the proliferation of murine lymphocytes. The active component (HHM 3-1) was elucidated as a polysaccharade with a small amount of lignin. When it was subjected to MALDI-MS by using 3-hydroxypicolinic acid as a matrix, the molecular weight of the component was estimated as 792688.2dalton. Total hexose and protein content of the component were estimated as 62.6% and 0.51%, respectively and it was composed mainly of glucose, galactose and mannose. The remaining part of the component was estimated as ligin because of the characteristic functional groups in IR and UV spectra. Concomitant treatment of HHM 3-1 with known mitogens synergistically increased the proliferation of B-cells and T-cells.

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A Simple Instantaneous Power Theory and Modified Compensation Performance Evaluation of Active Power Filters (능동전력필터의 간단한 순시전력이론과 수정된 보상성능 평가법)

  • Jung, Y.G.;Yoo, K.H.;Kim, Y.C.;Yang, S.H.;Kim, W.Y.;Lim, Y.C.
    • Proceedings of the KIEE Conference
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    • 1999.07f
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    • pp.2549-2552
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    • 1999
  • The fictitious power theory in time domain is very easy to understand, but power analyzing time of active power is increased, because power is analyzed using signal techniques based on the correlation between voltage and current waveforms. Also, conventional methods in time/frequency domain to evaluate the compensation performance of active power filters are not provided easy solutions. So, the authors have previously proposed 3-D current coordinates which is composed into active component, fundamental reactive component and distorted component of nonlinear loads current. This method has excellent performance, but can not evaluate the characteristics of nonlinear load current whether inductive or capacitive. Therefore, To overcome problems mentioned previously, this paper deals with the simple instantaneous power theory and the modified 3-D current coordinates for evaluating the compensation performance of active power filters. To confirm the validity, active power filters simulator is developed using C-language. From the simulation, results are discussed their utility.

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A New Component Model and Framework for Reuse of Components (컴포넌트 재사용을 지원하는 컴포넌트 모델 및 프레임워크)

  • Lim, Yoon-Sun;Kim, Myung;Jeong, Seung-Nam;Jeong, An-Mo
    • Journal of KIISE:Software and Applications
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    • v.34 no.12
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    • pp.1011-1020
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    • 2007
  • It is difficult to assemble independently developed software components because of discrepancies between their interfaces. In order to resolve such problem, we propose a new component model, Active Binding Technology, in which each component has its own independently-defined interface for service request that is revealed in its metadata, instead of passively following the interface of a service-providing component. This model Includes the use of the glue component, an interface mediating place, whose template code is automatically generated by reading in the metadata of the components to be combined. We also propose a runtime framework that holds the pool of component instances, completes the assembly of components in the manner of dependency injection, and performs middleware services and real-time system monitoring through glue components. In order to test the practical value of Active Binding Technology, we have made a tool, which supports the development and assembly of Active Binding components.