• 한국재료학회지
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• 제1권2호
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• pp.86-92
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• 1991

Morse potential을 변형한 2체항(2-body tem)과 Axilrod-Teller potential을 변형한 3체항(3-body tem)으로 구성된 포텐셜에너지 함수를 사용하여 $C_2-C_6$ cluster 동소체들의 에너지들의 에너지를 3체항 세기인자(3-body intensity factor)의 함수로 나타냄으로써 3체 인력의 기여도의 증가함에 따라 carbon cluster들의 구조는 open structure로부터 closed structure로, 또한 복잡한 구조로부터 단순한 구조, 즉 3차원적인 형태로부터 2차원 및 1차원적인 형태로 변해감을 알 수 있었다.

• 한국통신학회논문지
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• 제38C권9호
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• pp.781-786
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• 2013

Multiplexing information over parallel data channels based on RF MIMO concept is possible to achieve considerable data rates over large transmission ranges with just a single transmitting element. Visual multiplexing MIMO techniques will send independent streams of bits using the multiple elements of the light transmitter array and recording over a group of camera pixels can further enhance the data rates. The proposed system is a combination of the reliance on computer vision algorithms for tracking and OOK cell frame modulation. LED array are controlled to transmit message in the form of digital information using ON-OFF signaling with ON-OFF pulses (ON = bit 1, OFF = bit 0). A camera captures image frames of the array which are then individually processed and sequentially decoded to retrieve data. To demodulated data transmission, a motion tracking algorithm is implemented in OpenCV (Open source Computer Vision library) to classify the transmission pattern. One of the most advantages of proposed architecture is Computer Vision (CV) based image analysis techniques which can be used to spatially separate signals and remove interferences from ambient light. It will be the future challenges and opportunities for mobile communication networking research.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2011년도 추계학술대회
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• pp.662-665
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• 2011

인지 무선통신 네트워크는 현재까지 폭넓은 커뮤니티 중심의 오픈소스의 형식으로 연구되고 있으며, 프로그램이 가능한 플랫폼 기반의 연구 성과라는 생각에 대한 잠재적인 기대치는 매우 높다. 하지만, 이러한 무선 플랫폼의 확산과 지원하는 소프트웨어의 오픈소스적인 특성 또한 그 위험성이 매우 높다고 할 수 있다. 사용자간 (peer-to-peer) 소프트웨어가 한 때 오용되었던 것처럼, 개별 프로그래머가 저렴하고 쉽게 널리 보급할 수 있는 인지 무선통신 플랫폼을 개발하여 대중적으로 악용할 수 있는 가능성이 매우 큰 것이다. 이렇게 되면 차세대 무선 통신의 새로운 연구로 얻을 수 있는 이익 보다 인지 무선통신 디바이스를 재프로그래밍하여 통신법규를 어기거나 적대적으로 악용할 수 있는 부정적인 영향이 오히려 심각해 질 수 있다. 본 고에서는 이러한 인지 무선통신 네트워크의 보안 문제를 살펴보고, 효과적인 대체방안에 대하여 분석하였다.

• 한국해양공학회지
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• 제22권2호
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• pp.78-84
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• 2008

As a preliminary step to build a complete superyacht hull design program, the development of superyacht profile design system is introduced. The two-dimensional hull profile is decomposed into four local zones depending upon the functionality and connecting continuity of the profile. Characteristics of each zone are investigated and used to generate the model describing the geometric shape of zone using freeform curves. A set of design parameters is derived from the established geometric model. Generation and modification of a model are is by manipulating the chosen parameters. Four zones designed are integrated to form a final profile. An interactive design system performing all the modeling and modification processes is implemented using the graphic user interface system based an Microsoft Foundation Class and OpenCASCADE, a open graphic library. The shapes of the profiles generated by the developed design system are verified with those of built superyachts. The developed design system will be used for the construction of three-dimensional superyacht hull modeling system.

• International Journal of Internet, Broadcasting and Communication
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• 제11권4호
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• pp.18-25
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• 2019

The public data portal provides various public data created by the government in the form of files and open APIs. In order to increase the usability of public open data, a variety of information should be provided to users and should be convenient to use for users. This requires the structured data design plan of the public data. In this paper, we propose a data design method to improve the usability of the Seoul subway public data. For the study, we first identify some properties of the current subway public data and then classify the data based on these properties. The properties used as classification criteria are stored properties, derived properties, static properties, and dynamic properties. We also analyze the limitations of current data for each property. Based on this analysis, we classify currently used subway public data into code entities, base entities, and history entities and present the improved design of entities according to this classification. In addition, we propose data retrieval functions to increase the utilization of the data. If the data is designed according to the proposed design of this paper, it will be possible to solve the problem of duplication and inconsistency of the data currently used and to implement more structural data. As a result, it can provide more functions for users, which is the basis for increasing usability of subway public data.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2016년도 추계학술대회
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• pp.215-218
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• 2016

로봇은 다양한 기능을 하는 기기들이 유기적으로 결합하여 동작한다. OPRoS (Open Platform for Robotic Services) 프레임웍은 여러 기관 및 개발자가 로봇에 탑재되는 부품을 컴포넌트 형태로 개발하여 자유롭게 결합시킬 수 있는 통합 개발 환경을 제공한다. 로봇의 신뢰성 있는 동작을 확보하기 위해 개발자는 또 다른 개발자가 만든 컴포넌트들과 상호 운용을 시험해야 한다. 이를 위해 가장 먼저, 개발된 컴포넌트와 의미 있는 결합을 할 수 있는 타 컴포넌트를 검색할 수 있어야 한다. 본 연구는 OPRoS 프레임웍이 제공하는 인터페이스에 의미를 부여하고 모델화 하여 의미 모델간의 매핑 기법으로 연계 가능한 타 컴포넌트를 검색할 수 있는 로봇 상호 운용성 평가 시스템을 제시한다.

• 연구윤리
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• 제4권2호
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• pp.1-5
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• 2023

Purpose: There are already hundreds of millions of users of the Metaverse platform, and within a few years, it is expected to develop into a stage for new economic activities with huge industrial ripple effects due to the size of users. The purpose of this study is to derive considerations for the development of metaverse ethical guidelines. Research design, data, and methodology: The concept of the metaverse was examined through various opinions of industry and experts on the metaverse, and literature related to metaverse ethics was analyzed in the Korean journal database. Results: Six issues were identified through the existing research. (1) Establishing a unified definition of metaverse (2) Necessity of establishing ethical principles considering the operator (3) Personal information protection and privacy (4) Expression in a virtual environment (5) Copyright and intellectual property rights of creations (6) Virtual economy and fairness of trade. Conclusions: Metaverse ethics will be developed and implemented in a form and method different from the real world, but basically, continuous discussions on ethical rationality are needed in the process. In addition, since the ethical judgment in the metaverse environment accompanies cultural differences and epochal changes, it is necessary to focus on metaverse ethics cases.

• 무역학회지
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• 제46권6호
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• pp.239-255
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• 2021

To review the theoretical background of regulatory approaches to cross-border transfer of personal data, this paper divides major digital trade participating countries into four types according to the OECD - non-regulatory, post-intervention, pre-supervision, and national control. It then analyzes the US, Japan, the EU, and China respectively that belong to each type. South Korea, which is currently about to pass the amendment by the National Assembly, has identified that it is in the middle of post-intervention and pre-supervision, and needs to evolve into pre-supervision norms like the EU while it has to participate more actively in the process of establishing international digital trade rules. Korea first needs to sign digital trade agreements and promote mutual certification projects more actively from the standpoint of a medium-sized open country with growing digital companies and digitally-open consumers. Second, the government should fully consider the interests of not only companies but also various trade stakeholders including domestic consumers, when drafting and implementing trade policies. To this end, 'a single window approach' is needed not only at the Ministry of Trade, Industry, and Energy, but also at the level of the entire government which require an integrated form of digital trade policy governance.

• 건축역사연구
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• 제3권1호
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• pp.101-122
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• 1994

This paper is one of the sequels from 'A Survey of Villages and Dwellings of Korean Immigrants in the North-Eastern Part of China'. It is the result of the extensive survey of Ch'ang-ts'ai-tsun village and covers several architectural characteristics of the dwellings. This paper alma to identify the 'double file' dwelling type, which is believed as one of the main stream of Korean folk dwelling. In this type, 'Chung-ju-kan' forms the central open space, where main household functions are carried out. This type originates from climatic reasons and functional reasons as well. This paper also aims to clarify how the dwelling forms are changed according to the life styles of various periods. The Korean immigrants in this village have experienced rapid changes in modern times like other Chinese. Through various political movements, the original dwelling type of this village has changed to adapt various needs and functions, which shows the simple truth : dwelling form changes according to the changes of life style and social structure. In this paper the directions of chimney through various periods are analyzed to verify the differences of the house layout methods and concepts of the time. The village had grown through 3 main periods before liberation period(1946), communization period(1946 - 1966) and contemporary period (1967 - ). It is concluded as follows: 1. The village was originated in late 19th century along the east-west street, which was a major routes of Korean Immigrants to China. In this area there was no regularity in its site plan. The direction of chimney, which was usually westward, was not determined according to the location of gate. This type was kept until liberization of this area, 1946. The plans of dwellings followed Ham-kyong-do 'double file' dwelling type, '6-kan dwelling' or '8-kan dwelling'. 2. The 'New Village' area, which was formed in the communization period, has a strict regularity in its site plan. The direction of chimney was determined as opposite direction of the gate. This method was maintained until 1976, when Mao died and new 'open' policy was held by Chinese government. In this area the 'dwelling house' plan type was not changed, but its layout and size were restricted. The general form of the dwelling in this village was shaped in this period. 3. The contemporary dwellings were built in random site location. The dwelling type was changed because of the reduction of family size and the permissin of private ownership. The number of rooms was reduced but the storage rooms and domestic animal hutches were added. But the 'Chung-ju-kan', the major chacteristics of north-eastern Korea dwelling is still kept. It becomes one large 'Chtin-ju-kan' room like 'open plan' type.

• 기술혁신연구
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• 제28권1호
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• pp.53-80
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• 2020

최근의 연구는 개방형 혁신이 전략적 측면에서 혁신에 어떠한 영향을 미치는지에 중점을 두고 있어 개방성의 형태와 관련된 연구는 부족하다. 또한, 개방형 혁신을 위해 개방을 해야 하지만 혁신을 보호해야 하기도 한다는 모순이 존재한다. 최근 이와 관련하여 혁신 보호 연구의 필요성이 확대되고 있다. 따라서 본 연구는 개방성의 형태가 제품혁신에 미치는 영향을 살펴보고, 개방성의 형태와 제품혁신의 관계는 전유성 메커니즘에 따라 어떻게 달라지는지 탐구하였다. 본 연구는 OECD에서 개발하고 배포하는 CIS(Community Innovation Survey)를 기반으로 국내 실정에 맞게 작성된 KIS(Korean Innovation Survey) 자료를 사용하였다. 연구의 주요 연구결과를 요약하면 다음과 같다. 첫째, 개방성의 형태는 제품혁신에 정(+)의 영향을 미친다. 구체적으로 외부 탐색은 활용적 혁신에 정(+)의 영향을 미쳤으며, 협업은 탐험적 혁신에 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 전유성 메커니즘은 개방성의 형태와 제품혁신의 관계에 정(+)의 조절효과를 가진다. 구체적으로 공식적 전유성 메커니즘은 외부 탐색과 활용적 혁신의 관계에 정(+)의 조절효과를 보였으며, 비공식적 전유성 메커니즘은 협업과 탐험적 혁신의 관계에 정(+)의 조절효과를 가지는 것으로 나타났다. 본 연구는 다음과 같은 기여를 할 것으로 기대된다. 첫째, 개방성의 형태를 기존의 방식과는 다르게 외부 탐색과 협업으로 구분하였으며 이에 따라 제품혁신에 미치는 영향을 파악하여 제품혁신의 유형과 적합한 개방성의 형태를 파악하였다. 둘째, 전유성 메커니즘의 특성에 따라 개방성의 형태와 제품혁신의 관계에 정(+)의 조절효과를 미치는 것을 파악하여 개방성의 형태와 제품혁신의 유형에 따라 더 적합한 전유성 메커니즘 유형을 파악하였다.