• Proceedings of the Korean Society of Computer Information Conference
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• 2019.07a
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• pp.241-242
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• 2019

4차 산업 혁명에 맞춰 빠르게 발전하고 1990년대부터 등장하기 시작했던 '인텔리전트 빌딩'이 다시 주목을 받고 있다. 센서와 컴퓨터가 내장된 사물들이 인터넷으로 연결되어 각종 서비스를 제공하여 환경을 변화시키고 삶이 편해지고 있다. 그럼에도 불구하고 편리함을 추구하는 기존 기술 들은 대기업들이 주를 이루어 관리를 하게 되고 있고 유지 보수비용이 많이 들어 스마트 기기에 능숙하지 않은 부분도 있어 본 논문은 보다 기존의 IOT 기술보다 유지 보수비용의 절감과 손쉬운 접근방식을 제공한다. 본 논문인 '구글 어시스턴트를 이용한 스마트 홈 제어'는 집 전체를 제어하여 조명, 냉난방, 환기 등을 조절하고 무단 침입자를 감지하며 경고음을 알려주는 것이다. 예를 들어 집 주인이 외출을 하였는데 가스렌지의 불을 안 끄고 나왔거나 조명을 안 끄고 나왔는데 집을 다시 들어가기 어려운 상황일 때 핸드폰으로 버튼 하나만 누르면 제어가 된다. 본 논문의 목적은 집안의 화재나 전기 요금절감을 위하고 편리한 삶을 추구하고자 개발 되었다.

• The Journal of the Convergence on Culture Technology
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• v.5 no.4
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• pp.171-181
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• 2019

In this article, we examined designer babies and bioethics, and we reviewed how Anna argued that she had the rights to her body through trial with parents. No matter what purpose a cloned human or designer baby was born with, it is worth being respected as the birth itself. After learning the secrets of his birth in Jodie Picoult's My Sister's Keeper, which is based on a designer baby, Anna falls into confusion of identity and sues parents who decide to transplant organs regardless of Anna's will. Anna argues that she has the right to make decisions about her own body and that even her parents can't disregard her opinions. Scientists should stop their research if using biotechnology to reproduce humans, such as designer babies and cloned humans, can destroy the natural order.

• Journal of Animal Science and Technology
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• v.46 no.4
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• pp.571-584
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• 2004

It is known widely that granulosa cell apoptosis leads follicular atresia and macrophages exert their effects directly and/or indirectly from the initiation to the completion of follicular atresia by phagocytosis of apoptotic bodies and secretion of various cytokines. However, the site of initiation, propagation routes and the elimination methods of apoptotic bodies, and the time and methods of penetration of macrophages into the follicles are not known completely. Using pig(Yorkshire-breed) ovary, immunohistochemical studies with TUNEL for apoptotic bodies and pig macrophage monoclonal antibody 4E9 for macrophages, and light and transmission electron microscopic observations were performed. In the pig, follicular atresia began with the granulosa cell apoptosis, and the apoptosis of theca intema cells occured at the same time. The apoptosis of granulosa cells initiated randomly within the granulosa cell layer and propagated rapidly into the whole layer. Ultrastructura1ly, apoptotic granulosa cells showed characteristic pyknotic and deformed nucleus and intracytoplasmic vesicles. Apoptotic bodies were eliminated by intact granulosa cells and macrophages. Intact granulosa cells ingested apoptotic bodies transiently, soon after they fell into the apoptosis. Finally, apoptotic bodies and degenerated oocyte were phagocytosed by macrophages. Macrophages entered the ovarian follicle at the time of initiation of granulosa cell apoptosis, and migrated with the progression of apoptosis. By elimination of theca cells, macrophages contributed the completion of follicular atresia These results will provide valuable informations on the study of the interrelation between macrophage and ovarian follicular atresia.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.19 no.5
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• pp.971-980
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• 1994

The need increased capacity in the cellular system has resulted in the adoption of digital technology with CDMA as the channel access method. It has been recognized that the distinction of the base station is important for its performance in CDMA, since the same spreading sequences are used by the all base stations. Time offset of the pseudo-random noise binary code are used to distinguish signals received at a mobile station from different base station. But the start of the zero offset PN sequence is chosen arbitrary without the background of the systematic and mathematical elaboration. This paper proposes a mothed that define the start of the zero offset PN sequence mathematically. This paper also discusses a method that can easily calculate the time offset of the received spreading sequence with respect to the zero offset PN sequence.

• KSCI Review
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• v.8 no.2
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• pp.15-23
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• 2001

Due to the popularization of Web. the importance of Web for teachers to collect teaching materials increases, but there are difficulties in using Web. due to the rapid increase of information and the shortage of proper skill of using it. The thesis designs and implements a lesson plan management system that systematically manages diverse data and teachers' knowledge. The information required in preparing lesson plans is acquired on the Web and stored in database, and the lesson plan Produced this way could be shared by other teachers on the Internet. In addition. lesson plan DTD was designed and every lesson Plan was transformed into XML data to Provide more convenient data exchange and diverse forms. so that its application could be extended to other education-related systems.

• Proceedings of the KIPE Conference
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• 2020.08a
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• pp.263-264
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• 2020

고전압 응용에서 효율을 높이기 위해서는 소프트 스위칭 또는 스위칭 손실이 작은 소자를 사용해야 한다. 스위치는 일반적으로 전압이 높아 질수록 특성이 안 좋아 지는 경향이 있어서, 3레벨 형태로 스위치의 전압 정격을 낮추면 특성이 좋은 스위치를 사용 할 수 있다. 대용량 응용으로 확장 시, 모듈화 및 인터리빙 기법은 전류 정격을 낮춰 시스템의 경제성 및 유지 보수성이 증가하는 장점이 있다. 본 논문에서는 3레벨 인터리브드 양방향 벅-부스트 컨버터의 구조 분석을 통해 고전압, 대용량 응용에 적합한 최적 구조를 제안한다.

• Cross-Cultural Studies
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• v.42
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• pp.419-449
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• 2016

The Russian icon and Korean tangwha (幀畵, altar portrait of Buddha) are based on the similarity of the divine Being. Each has the characteristic index that forms an existential connection with the object and at the same time, implies the symbolic meaning of the scriptures and doctrines of the Russian Orthodox and Buddhists. Russian icon and Korean tangwha with these attributes have origins in the Byzantine, India and China. Unlike most religious art, Russian icon and Korean tangwha clearly reveal profane orientation and mystical elements. This artistic phenomenon has evolved from the mystical religious culture in Russia and tantric rituals of the early Joseon period. Iconostasis, created from historical figures of the Old Testament, Jesus, the New Testament represent the principles of the macrocosm. Each icon of iconostasis has integrity, while each floor has another narrative and a meta-discourse on the entire composition. Three-Platforms of amrtakundalin can also have a huge epic that is directed from the Low-Platform to the High-Platform for the purpose of salvation. While the narrative of iconostasis has a time structure, from the beginning of the universe up to date in chronological time, amrtakundalin have pictorial transitions of time and space that rises from this life to a heavenly world. Despite the different world views of the Russian Orthodox and Buddhists, iconographical format and symbolism of heaven and hell in the Iconostasis, Last Judgment and amrtakundalin are similar. There is a constant antagonism between heaven and hell, light and darkness, water and flame. Iconographical contents include the water of life and nectar, the book of life and 'eoppu', and the scales and mirror of Karma that discriminate between the good and evil before judgment. The dualistic coordinate concept such as light and darkness, life and death, or heaven and hell that appears in the narrative structure of iconostasis, the Last Judgment and amrtakundalin leads the people to spiritual awakening.

• ETRI Journal
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• v.9 no.4
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• pp.85-96
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• 1987

본고에서는 CCITT 권고안(TMN)의 개념에 의거하여 국내 ISDN을 효율적으로 지원하고, 기능의 추가 및 확장이 가능한 형태의 ISDN O&M의 구조를 제안하여 ISDN O&M를 기능적으로 감시제어부, 유지보수 및 망 관리부로 구분하고 이러한 O&M 구조하에서 기존 O&M 기능과의 정합을 위하여는 운용망 인터페이스를 통하여 기능적으로 접속되어야 하고 새로운 NE와 OS간의 기능 분담에 관하여 언급하고 있다.

• Proceedings of the Korea Association of Information Systems Conference
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• 1997.10a
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• pp.149-164
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• 1997

사례기반형 추론(CBR)은 과거의 경험을 이용해서 문제를 해결하려는 방법으로서 규칙기반형 추론(RBR)과 달리 문제해결경험이 풍부한 도메인에 적합한 방법이다. CBR은 정적인 측면에서 사례의 표현과 구조화문제가 중요시되며, 동적인 측면에서는 사례의 검색 절차와 수정이라는 해결안 생산과정이 중요시된다. 본 논문은 정적 측면에서 효과적인 CAPP 지원을 위해 사례베이스(CB)를 계층적으로 구조화하였다. 또한 CB의 구조화시 시스 템의 문제해결 능력을 향상시켜주기 위하여 CB를 응용도메인 종속적 CB(DDCB)와 독립적 CB(DICB)로 분리하여 과거의 문제해결 경험에 관한 지식은 DDCB에 나타내었으며, 도메인 전문가가 가지는 일반적인 문제해결 지식은 DICB에 나타내었다.

• The Science & Technology
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• v.10 no.12 s.103
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• pp.45-46
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• 1977

21세기의 에너지 문제는 핵융합과 태양에너지 이외에는 다른 해결방법이 없고 환경오염문제 등을 생각하면 오히려 태양에너지 이용쪽이 실현가능성이 크다는 견지에서 서독연구기술성은 베를린 공과대학, AEG테레프겐회사, 도르니에 ㆍ시스팀회사에 인공위성에 의한 태양에너지 이용의 가능성에 대하여 조사연구를 위촉하였다. 그 결과에 대하여 AEG테레프겐회사의 하르트밤박사는 한 강연에서 2020년경에는 태양에너지 위성에 의하여 세계에너지 부족이 해소될 것이라고 다음과 같이 말하고 있다.