• The KIPS Transactions:PartA
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• v.11A no.1
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• pp.67-74
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• 2004

Most of today's parallel numerical schemes use synchronous algorithms, where some processors that have finished their tasks earlier than others must wait at synchronization points for correct computation. Hence overall performance of the system is dependent upon the speed of the slowest processor. In this paper, we det·ise a synchronous/asynchronous hybrid algorithm to accelerate convergence of the solution for finding the dominant eigenpair of a large matrix, by reducing the idle times of faster processors using MPMD programming methodology.

• The KIPS Transactions:PartB
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• v.16B no.6
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• pp.489-496
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• 2009

Hierarchical Task Network(HTN) planning, a typical planning method for effectively taking advantage of domain-specific control knowledge, has been widely used in complex real applications for a long time. However, it still lacks theoretical formalization and standardization, and so there are some differences among existing HTN planners in terms of principle and performance. In this paper, we present an effective way to translate a HTN planning domain specification into the corresponding standard PDDL specification. Its main advantage is to allow even many domain-independent classical planners to utilize domain-specific control knowledge contained in the HTN specifications. In this paper, we try our translation-based approach to three different domains such as Blocks World, Office Delivery, Hanoi Tower, and then conduct some experiments with a forward-chaining heuristic state-space planner, FF, to analyze the efficiency of our approach.

• The Korean Journal of Archival Studies
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• no.31
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• pp.3-42
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• 2012

This paper considers some possibilities of community archives by exploring the concepts ans meanings of archival description. The author deals with two interesting cases -Herstory Writers Workshop Collection of Stony Brook University in New York and Poolmoo Collection of Poomoo Agricultural School in Korea. The author argues that archivists should know the specifications of Community Archives related to National Archives when they organizing and preserving records and archives of community archives.

• ETRI Journal
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• v.4 no.2
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• pp.76-83
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• 1982

BSP 연구의 결과는 변경 불가능한 것은 아니다. 이는 단지 어느 시점에 있어서의 최상의 결론을 나타 낸 것 뿐이다. BSP 접근방식의 참된가치는, (1) 기업이, system design에 있어서 급진적인 붕괴없이, 우선순위와 방향에 있어서의 미래의 변화에 대응 할 수 있도록 하는 작업에 대한 최초계획을 수립하며 그 환경을 조성하고,(2) 계획의 계속을 위해 정보시스템의 기능을 저의하기 위한 기회를 제공하는 것이다. 미래의 IS(Information system)에 대한 성공은, 조직의 고유한 요구에 입각하여 포괄적이고도 장기적인 계획을 작성 할 수있는 조직의 능력에 기반을 둔다고 할 수 있다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1995.04a
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• pp.545-554
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• 1995

멀티미디어 시스템(Multimedia system)이란 단일 매체(Media)를 통해서 정보를 한가지 형태로 제공하던 종래의 방식과는 달리 필요한 정보를 문자, 오디오, 비디오, 그래픽스 등 여러 가지 매체를 통하여 다양한 형태로 제공해 줄 수 있는 시스템이다. 본 연구에서는 멀티미디어 시스템의 고유특성상 인간공학 연구가 필요한 여러가지 요소들을 고찰하여 보고, 이를 바탕으로 사용자 인터페이스(User interface)의 전반적인 사용편의성(Usability)에 영향을 미치는 주요 설계변수들을 추출하였다. 멀티미디어 시스템에서의 인간공학적 고려요소를 도출하기 위한 기본 작업으로서 멀티미디어 시스템을 사용자(user), 작업(task), 인터페이스(interface), 정보형태(information type), 환경(environment)의 5가지 구성요소로 나누고 이들 구성요소들 간의 연관관계를 멀티미디어 시스템의 설계에 필요한 기본구조(framework)의 형태로 정리하였다. 이러한 구성요소에 관련된 인간공학적 설계변수들을 상세히 조사하고, 조사된 90여개의 설계변수들 중 연구가 미진한 변수 또는 사용편의성에 영향을 많이 미칠수 있는 변수들만 추출하여 주요 변수들을 설정하였으며 이 변수들은 체계적인 연구계획(Research plan) 설정에 입력자료로 사용될 예정이다.

• Journal of Digital Contents Society
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• v.11 no.3
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• pp.375-383
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• 2010

In developing question-answering (QA) systems, it is hard to analyze natural language questions syntactically and semantically and to find exact answers to given query questions. In order to avoid these difficulties, we propose a new style of question-answering system that automatically generate natural language queries and can allow to search queries fit for given keywords. The key idea behind generating natural queries is that after significant sentences within text documents are applied to the named entity recognition technique, we can generate a natural query (interrogative sentence) for each named entity (such as person, location, and time). The natural query is divided into two types: simple type and sentence structure type. With the large database of question-answer pairs, the system can easily obtain natural queries and their corresponding answers for given keywords. The most important issue is how to generate meaningful queries which can present unambiguous answers. To this end, we propose two principles to decide which declarative sentences can be the sources of natural queries and a pattern-based method for generating meaningful queries from the selected sentences.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.14 no.3
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• pp.253-266
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• 2016

In accordance with the classification system of radioactive waste in Korea, all the disused sealed radioactive sources (DSRSs) fall under the category of EW, VLLW or LILW, and should be managed in compliance with the restrictions for the disposal method. In this study, the management and disposal method are drawn in consideration of half-life of radionuclides contained in the source and A/D value (i.e. the activity A of the source dividing by the D value for the relevant radionuclide, which is used to provide an initial ranking of relative risk for sources) in addition to the domestic classification scheme and disposal method, based on the characteristic analysis and review results of the management practices in IAEA and foreign countries. For all the DSRSs that are being stored (as of March 2015) in the centralized temporary disposal facility for radioisotope wastes, applicability of the derivation result is confirmed through performing the characteristic analysis and case studies for assessing quantity and volume of DSRSs to be managed by each method. However, the methodology derived from this study is not applicable to the following sources; i) DSRSs without information on the radioactivity, ii) DSRSs that are not possible to calculate the specific activity and/or the source-specific A/D value. Accordingly, it is essential to identify the inherent characteristics for each of DSRSs prior to implementation of this management and disposal method.

• Korean Institute of Interior Design Journal
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• v.19 no.2
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• pp.42-53
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• 2010

건축에 있어서 이론과 실제의 관계 문제는 오랫동안 건축 담론에 대한 주요 대상이 되어왔다. 이는 건축에서의 발전이 역사적으로 동시대의 사회적, 문화적, 경제적 환경의 진화와 더불어 진행되어 왔기 때문이며, 건축작업 선상에서 대두되는 이론과 실제의 관계와 맥락성이 건축의 주체성에 매우 중요한 요소로 여겨지기 때문이기도 하다. 1960년대부터 불거진 포스터모던주의의 사고적 영향은 건축분야의 의미와 가치에 있어서 학문과 실무분 야에서 새롭게 재조명되기 시작하였고, 기존 건축고유의 영역을 벗어나, 역사, 이론, 비평, 기술 및 디자인 분야로 확장되어 새롭고 다양한 접근 방법과 그 방식에 대한 고민을 추구하기 시작하였다. 건축작업에 중요한 근거를 제시해주는 비평적 사고를 유지하기 위하여, 이론적인 아이디어에서 실질적인 실무로서의 투사방법, 그리고 그 사이의 절충을 지속하기 위함은 특히 현대사회에서 더욱 복합적이며 다면적인 질문이 되고 있다. 이 논문은 건축의 투사 방법에 있어서 현대 건축가들이 자신들의 이론적인 관점과 그 관점을 건축적으로 가시화 시키는 관계성을 관찰하고, 어떻게 본인만의 논리와 프로세스를 추구하고 지속하는가에 대한 점을 연구하는데에 그 목적이 있다.

• Journal of Internet Computing and Services
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• v.7 no.3
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• pp.61-69
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• 2006

Data synchronization between data stored in mobile communication terminals and a central server is one of essential tasks for efficient mobile communication environments. Since, however, manufacturers of mobile terminals have their proprietary data synchronization mechanisms, data interoperability can hardly be achieved. Therefore, SyncML data synchronization mechanism in mobile communication environments was proposed as an open standard by OMA(Open Mobile Alliance). In this paper, a SyncML-based data synchronization gateway is designed and implemented which can process ActiveSync data also. In other words, by constructing a combined data synchronization gateway which can transform ActiveSync data into SyncML data, data interoperability between mobile terminals which use two different data synchronization mechanisms can be achieved, In addition, mobile communication experiments between ActiveSync-based terminals and a SyncML-based central server show that the data synchronization gateway constructed in this paper, works correctly.

• Journal of KIISE:Computing Practices and Letters
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• v.14 no.2
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• pp.117-129
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• 2008

Data synchronization between data stored in mobile communication terminals and data in a central server is one of essential tasks for efficient mobile communication environments. Since, however, manufacturers of mobile terminals have their proprietary data synchronization mechanisms, data interoperability can hardly be achieved. In this paper, an integrated data synchronization gateway based SyncML is designed and implemented. SyncML data synchronization is one of open standards proposed by OMA(Open Motile Alliance). In other words, by constructing a data synchronization gateway which can transform various proprietary data into SyncML data and vice versa, data interoperability between mobile terminals which use different data synchronization mechanisms can be achieved. With an integrated data synchronization gateway system implemented in this work, interoperability among WinCE-based ActiveSync data, PalmOs-based HotSync data and OMA SyncML data can be achieved.