• Proceedings of the Korea Multimedia Society Conference
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• 2004.05a
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• pp.310-313
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• 2004

자바는 컴파일러에 의해 아키텍처 독립적인 바이트코드로 구성된 바이너리 형태의 클래스 파일을 생성하면 JVM에 의해 하드웨어와 운영체제에 상관없이 실행이 가능한 플랫폼 독립적인 언어로 현재 가장 널리 사용되는 범용 프로그램 언어중 하나이다. EVM(Embedded Virtual Machine)은 Microsoft사의 .NET 언어와 SUN사의 Java 언어등을 모두 수용할 수 있는 임베디드 시스템을 위한 가상기계이며, SIL(Standard Intermediate Language)은 EVM에서 실행되는 중간언어로 다양한 프로그래밍 언어를 수용하기 위해서 객체지향 언어와 순차적 언어를 모두 수용하기 위한 연산 코드 집합을 갖고 있다. 본 논문에서는 자바 프로그램을 EVM에서 실행 될 수 있도록 자바 프로그램을 컴파일하여 생성된 클래스 파일로부터 Oolong 코트를 추출하고 추출된 Oolong 코드를 EVM의 SIL 코드로 변환하는 Oolong-to-SIL 번역기 시스템을 구현하였다. 번역기 시스템을 정형화하기 위해 Oolong 코드의 명령어 등을 문법으로 작성하였으며, PGS를 통해 생성된 어휘 정보를 가지고 스캐너를 구성하였고, 파싱테이블을 가지고 파서를 설계하였다 파서의 출력으로 AST가 생성되면 번역기는 AST를 탐색하면서 의미적으로 동등한 SIL 코드를 생성하도록 번역기 시스템을 컴파일러 기법을 이용하여 모듈별로 구성하였다. 이와 같이 번역기를 구성함으로써 목적기계의 중간언어 형태에 따라 중간언어 번역기를 자동으로 구성할 수 있어 재목적성(Retargetability)을 높일 수 있다.

• Journal of Advanced Navigation Technology
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• v.24 no.3
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• pp.184-191
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• 2020

Avionics System Integration Laboratory is the integrated test environment for integration and verification of avionics systems. When real equipment can not be used in the laboratory for various reasons, software models should be needed. Because there hasn't been any standardized method for the models so that it is difficult to reuse the developed models, the need for a framework to develop the avionics software models was emerged. We adopted DEVS(discrete event system specification) formalism as the standardized modeling method for the avionics software models. Due to DEVS formalism is based on event-driven algorithm, it doesn't accord a legacy system which has sequential and periodic algorithms. In this paper, we propose real-time event-driven modeling and simulation method for SIL to overcome these restrictions and to maximize reusability of avionics models through the analysis of the characteristics and the limitations of avionics models.

• Journal of the Korean Institute of Rural Architecture
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• v.15 no.4
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• pp.35-42
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• 2013

The study aims to investigate general characteristics of Jae-sil from an architectural perspective by grasping location, deployment, structure, and plan composition based on existing inhabited conditions in Jeollabukdo. Results derived from the study are as follows. First, the location of Jae-sil is classified into mountainous and village types, and the two types showed a similar distribution. The village type showed the most distribution in the foot of a mountain in the rear of village, while the mountainous type is close to graveyard. The Jae-sil were mostly exposed to south, southeast, and southeast, which was not significantly different from residence. For deployment of the Jae-sil, a "二" shaped house, where main quarter and gated building are parallel located, can be common, indicating that additional attached building is less required. Second, for the platform out of structural components, coursed masonry was conducted by using natural rocks, and placed were a prop on the platform, first line on processed foot stone, and others on natural foot stone. For pillar, front line round columns, while others square columns. The binding type of the upper part of pillar is dominated by jangyeosujang and sorosujang. For wooden frame structure, 5ryangs were the most distributed, and out of these, 1goju 5ryang was the most generally used. For a roof part, it was composed with gambrel roof with single eave, and the roof was constructed by placing traditional Korean tile roof on the top. Third, for a size of Jae-sil out of plan composition, although the facade and the side of it were presented in a diverse manner, 4 facade rooms and 1.5 side rooms were the most frequently presented, and all Jae-sil were equipped with front ceremonial space. For spatial composition of Jae-sil, main floored hall is placed at the center, and each room is placed on the left and right side to secure space for ancestral rite for participants of it, and for a house with 5 rooms or more, it shows that main floored hall and rooms are weighted from side to side.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.745-746
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• 2017

통계상 국민 2명중 1명이 차를 소유하고 있는 오늘 날, 뉴스를 통해서 차량사고에 의한 인명사고 소식을 심심치 않게 접할 수 있다. 그 중 많은 비중을 차지하고 있는 사고는 승 하차시의 접촉 사고로, 최근 들어 증가하는 추세이다. 그래서 이러한 자동차 접촉사고에서의 자동차 탑승자의 안전을 지키기 위한 대책이 시급하다고 생각하였고, 이에 본 논문에서는 뒤의 다가오는 물체에 대한 속도측정을 통한 자동 차문 잠김을 대안으로 제시하며, 이를 통해서, 자동차 탑승자들의 안전을 보장하는 것에 보다 더 한걸음 나아가고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.751-753
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• 2017

현재, 시각장애인들이 보행 시 경로 안내를 제공받는 방법은 청각을 사용하는 것이다. 이로 인해 시각장애인의 보행시 안전이 매우 위험한 상황이다. 비장애인은 시각과 청각을 모두 활용해 길 찾기가 수월하지만, 현 시점에서 시각장애인은 오직 청각에만 의존해야 한다. 보행 시 교통사고 사망률이 OECD 평균의 두 배를 웃도는 대한민국에서 시각장애인들이 거리를 도보하기에는 더더욱 위험한 현실이다. 이에 대한 대책으로 본 논문에서는 아두이노를 사용해 촉각기반 네비게이션을 만들어 시각장애인의 교통사고 발생율을 낮추려고 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.736-737
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• 2017

교통약자(시각장애인, 노약자 등)에게 필요한 필수품 중 가장 중요한 것은 지팡이라고 생각을 한다. 하지만 지팡이에 많이 의존하는 것에 비해 지팡이가 안전한 보행을 도와주기에는 아직 부족하다고 생각을 했다. 따라서 교통약자의 안전한 보행을 위해 어두울 때 밤길을 비춰주거나 지팡이를 비춰줌으로써 추가적인 시야확보나 보행자의 존재 여부를 알려주며 보행자가 쓰러지는 등 응급상황을 판단하여 지정해둔 비상 연락망에 연락을 하고 현재 위치를 문자로 전송하게 할 수 있도록 하고 또한 지팡이가 감지할 수 있는 것 보다 좀 더 먼 장애물들을 감지하여 충돌을 사전에 방지하는 지팡이를 만들었다.

• Journal of architectural history
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• v.26 no.2
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• pp.31-42
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• 2017

This study investigates how the spatial recognition structure is emerging through the case of rectangular plan combined with a combination of Dang-Sil(堂室) and Gong(工) shape roof, and identifies a type of architecture in the early Joseon Dynasty that has never been revealed. The conclusion of this study is as follows. First, the Dang and the Sil are connected to each other, but the architectural elements such as pillars, frame, and windows are distinguished and appear as separate buildings. Second, the distinction between Dang and Sil is evident by the difference in the number of ridges and the shape of the roof. In addition, the roof and roof framework of the independent rooms and the rooms were common in the right angled architecture where the direction and the expandability of each structure were maintained. Third, the construction of the Dang-Sil combined structure, in which two or more structure frameworks were combined with the rectangular combined flat roof structure, gradually changed into a single structure with a single ridge. Fourth, this change means that people of the early Joseon Dynasty recognized the Dang and Sil as separate architecture, but the strict sense of spatial separation has disappeared over time.

• Journal of Korean Classical Literature and Education
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• no.15
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• pp.265-301
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• 2008

In this writing, issued beauty as Hyangga(향가) creative motivation into the focus, its expression modality is discussed and then an aesthetic sense of Sil-la is considered. For its research, in "Samkukyusa"("삼국유사") some Hyangga - , , , - that have phraseologies for beauty meaning are choose for the discuss. First, beauty as Hyangga(향가) creative motivation were expressed by above methods. 1. Beauty as desires for acquisition and confirmation in 2. Beauty that the subject (the writer) looked upon in 3. Beauty that felt pathetic for declining in 4. Beauty that arouse from disillusion in Second, an aesthetic sense of Sil-La in "Samkukyusa"("삼국유사") showed as the above. 1. Physical beauty that Sil-La were attracted by 2. Beauty as the glorified object that Sil-La were attracted by 3. Beauty as the virtue notion that Sil- La were attracted by In consequence, it is discussed that Sil-La had an aesthetic sense as the perfect virtue united the transcendence and the real.

• Proceedings of the KIPE Conference
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• 2003.07a
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• pp.182-185
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• 2003

Proposed Hybrid System is composed of phase leading capacitor banks, LC passive filters and active power filter. The passive power filter in parallel connection eliminate the 5th and 7th harmonics. The Variable capacitor banks correct the most of power factor, and the active power filter takes charge of remainder,

• Journal of the Korean Chemical Society
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• v.43 no.1
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• pp.5-122
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• 1999