• 한국정보통신설비학회:학술대회논문집
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• 한국정보통신설비학회 2008년도 정보통신설비 학술대회
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• pp.7-11
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• 2008

Future electric lights will be composed of white LEDs (Light Emitting Diodes). Indoor wireless optical communication systems utilizing white LED lights have been studying about it. Generally, plural lights are installed in room. Therefore, their optical path difference must be considered. In this paper, the influence of an optical path difference has been investigated and two approaches against this problem are introduced. One uses OOK-RZ (On-Off Keying, Return-to-Zero) coding and the other uses optical OFDM (Orthogonal Frequency Division Multiplexing). From the results of computer simulations, we have found that these approaches are feasible for the wireless optical communication systems utilizing white LED lights.

• 정보학연구
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• 제2권1호
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• pp.191-207
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• 1999

본 연구는 고객만족모형의 선정에 있어 재구매 의사와 예측타당성을 체계적으로 검토하려는 시도이다. 일반적으로 고객만족의 측정을 위해서는 단일항목척도와 복수항목척도를 사용하고 있다. 그러나 고객이 제품특성을 잘 모르는 경우는 이용하는 모형이나 측정방법에 따라 계산된 지수의 신뢰성이나 구매의도와의 상관관계는 높지 않는 경우가 발생한다. 이러한 문제의 해결을 위하여 본 연구에서는 통상적으로 활용되는 고객만족지수의 다양한 측정방법들에 대해 예측타당성을 검토하여 적절한 모형을 찾아내려는 시도이다.

• 공학논문집
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• 제6권2호
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• pp.47-59
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• 2004

도시종합정보시스템구축의 목적은 언제, 어디서나, 누구라도, 원하는 정보를 쉽게 입수 가능한 정보환경을 구축하여 도시의 활성화를 도모하고 문화와 정보가 어우러지는 친환경사회의 구현과 도시 안전성을 제고하는 미래지향적인 최첨단의 정보화도시를 창출하는데 있다. 주된 연구내용으로는 도시종합정보시스템의 개념정립과 구성요소, 그리고 도시종합정보시스템의 구축계획에 대해서 현재의 콘텐츠를 살펴보고 매체별 특징에 맞는 시스템구축계획을 논의 하였다.

• 대한수의학회지
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• 제36권4호
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• pp.967-972
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• 1996

A study was carried on histopathology of LUTD. Based on this study, it was noted that a plural number of factors and some genetic mechanisms are participating in onset of this disease, which should have to be studied further in future in omnidirections.

• 한국언어정보학회지:언어와정보
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• 제18권2호
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• pp.103-122
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• 2014

In a so-called cleft (or, pseudocleft), the kes-phrase seems to refer to a person, even though kes is generally incompatible with human beings. In this paper, I claim that in a cleft, the kes-phrase can refer to a concept, and that a concept of human beings is not a person. I give some pieces of evidence for this claim. In a cleft, the kes-phrase cannot be pluralized only when it is supposed to denote a human being. Moreover, in such a case, the NP before the copula cannot be interpreted as the meaning of a predicate. Furthermore, in a cleft two kes-phrases are not conjoined with (k)wa only when they seem to denote human beings. All the observations can be explained by the claim that the kes-phrase denotes a concept in such cases. A concept cannot be used as a predicate, pluralized, or conjoined to refer to objects that are subsumed under a concept. When the kes-phrase denotes a concept, the cleft sentence is an identity statement.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 A
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• pp.27-29
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• 2004

Recently, there are many electricity, electronics, and communication equipment which need to earthing in the building. When electric current flows into a certain earthing system in the same building, the potential of other earthing system rises. This potential interference require surface potential of electrods by electrode shape. In this paper basic formula is deduced on the basis of both electrodes surface potential of earth electrode as a source of the potential interference and earth electrode which receive the potential interference. The degree of potential interference as multiple earth electrode is verified the simulated results by means of the simple model in advance.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 A
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• pp.449-451
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• 2004

In the building, there are a lot of electricity, electrodes, and communication equipment. Many of those equipment needs to earthing. Naturally, the earth electrodes are constructed in the site of a building. In such a situation, when electric current flows into a certain earthing system the potential of other earthing systems rises. That is, the potential interference will take place between the earth electrodes. The conventional study has been considered by only the relation of the distance between the earth electrodes using the potential distribution formula of earth surface. However, it is necessary to inquire strictly, taking the surface potential of electrodes by electrode form into consideration. In this paper, basic formula is deduced on the basis of both electrodes surface potential of earth electrode as a source of the potential interference and earth electrode which receives the potential interference.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.1321-1326
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• 2008

According to the conventional train control system, the area of each train is detected by plural track circuits located in a constant distance on railway lines in order to control a distance between trains. The conventional train control system has the difficulty in making use of the substructure thoroughly and transmitting enormous amount of information. To solve those problems, the wireless CBTC system has been a global issue. To apply wireless CBTC system to train system, the following two requirements are preferentially necessary: (1) Dualizing wireless CBTC system to control trains ceaselessly in a system accident, (2) Improving dependency of transmitted information for location and velocity to protect collision and derailment of lightweight trains in advance.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2012년도 추계학술발표대회
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• pp.1389-1391
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• 2012

인덱스는 데이터 검색을 빠르게 하기 위하여 사용되며, 많은 데이터를 저장하는 대용량 데이터베이스 시스템은 B+-tree 인덱스를 주로 사용한다. B-tree 인덱스를 사용하여 범위 검색을 수행하는 경우 레코드 각각에 대하여 I/O를 요청함으로써 프로세스가 자주 대기(waiting) 상태가 되어 많은 오버헤드가 발생하였다. 이러한 문제를 해결하고자 본 논문에서 비동기 복수 I/O 인덱스 스캔방법을 제안한다. 비동기 복수 I/O 인덱스 스캔이 최고 6.5배 빠른 성능을 보였다.

• 영미문화
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• 제18권2호
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• pp.1-26
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• 2018

This paper aims to examine the performativity of street politics through Suffragette. The movie exposes the bloody violence of Britain government and shows the militant suffragettes and their resistance against it. It also deals with history and 'story'of labor class suffragettes for political rights. The paper shows how the movie is re-born as an indexical art and the street politics makes the plural performativity. Most of all, it reads the difference between the government's violence wielded as a power to suppress the suffragettes and bring them to their knees, and the suffragettes's violence having the resistant and emancipated revolution. We can realize that the suffragettes used the mode of visibility to expose its incompetence and make their emancipated violence into the indexical force. And we can see the variations of street politics from the acts of Davison, Maud, and Violet.