• Proceedings of the Korean Society of Computer Information Conference
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• 2016.01a
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• pp.93-95
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• 2016

본 논문에서는 사물인터넷 서비스 모델인 OMA LWM2M 구조에서 IoT 게이트웨이가 포함된 확장 모델을 제안한다. 추가적으로 제안된 모델은 스마트폰 기반으로 구현된 IoT 게이트웨이를 가정하여 확장된 모델이다. 본 논문에서 제안하는 확장형 LWM2M 모델은 스마트폰을 이용하여 LWM2M 기반에서 스마트폰의 다양한 자원 및 None-LWM2M 클라이언트 자원을 LWM2M 자원 객체로 활용하여 다양한 IoT 서비스를 효율적이고 경제적으로 제공하는데 활용될 수 있다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.9
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• pp.298-303
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• 2018

This study discusses the conceptual definition of a balcony and the emergence of basic-type and expansion-type floor plans according to the balcony utilization. In addition, the change in building density is analyzed with regard to real cases, and base data are offered for future urban policies in Incheon Metropolitan City. The context of the Building Acts could be understood through the analysis of various balcony definitions and characteristics, and the analysis was divided into basic and extension types according to the legalization that occurred in 2005. The issue of density according to balcony expansion is discussed through theories, and a planned attempt at density management in the target area is investigated. The building area, floor area, and floor area ratio are discussed with regard to the target area, and the density management is empirically proven, which is different from the Unit Plan.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.7
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• pp.95-104
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• 2018

The structures and energies of the anhydrate and hydrate (hydrate rate: h of 1) states of L-alanine (LA) and glycine (G) were calculated by quantum chemical calculations (QCCs) using B3LYP/6-31G(d,p) for four types of conformers (${\beta}$-extended: ${\Phi}/{\Psi}=t-/t+$, $PP_{II}$: g-/t+, $PP_{II}$-like: g-/g+, and ${\alpha}$-helix: g-/g-). In LA and G, which have an imino proton (NH), three conformation types of ${\beta}$-extended, $PP_{II}$-like, and ${\alpha}$-helix were obtained, and water molecules were inserted mainly between the intra-molecular hydrogen bond of $CO{\cdots}HN$ in $PP_{II}$-like and ${\alpha}$-helix, and attached to the CO group in ${\beta}$-extended. In LA and G, $PP_{II}$-like conformers were most stable in the anhydrate and hydrate states, and the result for LA was different from some experimental and theoretical results from other studies reporting that the main stable conformation of alanine oligopeptide was $PP_{II}$. The formation pattern and stability of the conformation of the oligopeptide was strongly dominated by the presence/absence of intra-molecular hydrogen bonding of $CO{\cdots}HN$, or the presence/absence of an $NH_2$ group in the starting amino acid.

• Journal of Korea Game Society
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• v.10 no.5
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• pp.3-13
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• 2010

This paper focuses on the sequences between game performance, game experience, game generation. Present-day the game has powerful effects to form new human species as game generation. Especially, the experience game is important because it could have one of the most powerful effect by characteristics of own interface. First of all, this paper analyzes a experience of the experience game and researches the game-extended space. Secondly, We create concept of 'new game generation' in order to explain new human species on the experience game. So we can reveal the social meaning of accelerated present state by the experience game through this new analysis.

• Journal of the Korean GEO-environmental Society
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• v.22 no.12
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• pp.5-13
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• 2021

Expandable steel pipe piles have been developed to ensure stability and reduce construction costs during underground floor remodeling and extension work. Expandable steel pipe piles are more economical and stable than micropiles. Extensible steel pipe pile is a method of improving the performance of steel pipes by expanding steel pipes underground. In this paper, the changes in buckling strength according to the shape of steel pipes in an extended steel pipe pile were identified, a numerical analysis model was developed to determine the expended part effect of bumps due to steel pipe expansion, and the optimal steel pipe expansion was calculated through material tests. The larger the expansion diameter of the steel pipe and the greater the number of expanded part, the greater the buckling strength. Numerical results showed that the number of expanded part has a greater effect on buckling strength than the expansion rate. When the expansion rate is more than 1.2 times, it can be seen that as the number of expanded part increases, the effect of increasing buckling strength increases significantly. It was also noted that the expanded part effect of the bumps occur significantly when the extension angle is less than 45° and the expansion rate is 1.3 times higher. When the steel pipe is failure, the expanded rate is 20 to 32%, averaging 25.4%. Through the material test, it was analyzed that it is desirable to limit the maximum expansion rate for performing steel pipes to 16%.

• Proceedings of the Optical Society of Korea Conference
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• 2007.07a
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• pp.73-74
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• 2007

• Proceedings of the KIEE Conference
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• 2008.04b
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• pp.19-21
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• 2008

현행 배전선로의 전주근가(1.2m 장방형)는 오거크레인을 이용한 건주공사 완료 후 전주근가 시공을 위한 별도의 인력 또는 백호우 장비가 추가로 투입피어 시공함으로써 인력으로는 공사시간이 장기간 소요되고 백호우장비로는 작업장 환경훼손과 시공원가 상승의 문제점이 있었다. 이러한 문제점을 해소하기 위하여 건주공사에 사용되는 오거크레인의 굴착 직경을 80cm까지 확장 가능한 '신축형 오거크레인용 유압식 확장기'와 원형 굴착공에 시공이 가능한 '아치형 전주근가'를 개발하고 이를 이용한 시공기술을 개발함으로써 동일장소에서 굴착작업이 수반되는 건주작업, 전주근가 매설작업을 가능하게 하여 장비활용성 증대, 작업장 환경개선, 공사기간 단축 및 시공원가 절감 등의 효과가 기대되는 기술을 개발하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06b
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• pp.504-508
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• 2008

기존의 비호환성 서비스 플랫폼을 대체할 수 있는 OSGi 기반의 확장형 소프트웨어 플랫폼을 제시한다. 본 논문에서는 OSGi Alliance에서 제정한 서비스 플랫폼 명세(Service platform specification)를 기반으로 플랫폼에 의존하지 않는 서비스 환경을 구현하고 이를 활용하여 홈 네트워크 환경을 위한 새로운 소프트웨어 플랫폼 구축에 관하여 논한다. 이는 플러그인 방식의 쉬운 확장 기능을 제공함으로써 서비스 제공자와 소비자의 다양한 시스템 환경에서 비용을 절감할 수 있는 효율적인 서비스 기반을 제공하게 될 것이다.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10d
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• pp.466-471
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• 2006

중앙 집중형 음성 통신 시스템이 확장성, 신뢰성, 그리고 초기 비용의 문제를 가짐에 따라, 분산 아키텍쳐 기반의 피어 투 피어 음성 통신 서비스를 실현하기 위한 연구가 최근 활발히 이루어지고 있다. 그러나 대부분의 연구들은 완전 분산 시스템을 구현하지 못하고 사용자의 인증 및 보안 기능을 위해 중앙의 서버에 일부 의존하는 형태를 취하고 있다. 이러한 형태로 구현된 서비스는 완화되기는 했지만 확장성, 신뢰성, 초기 비용 등의 문제를 그대로 가지고 있으며 또 다양한 서비스로 유연하게 확장하기가 쉽지 않다. 이 연구에서는 사용자 인증 및 보안 기능까지도 완전한 분산 형태로 구현할 수 있는 피어 투 피어 음성 통신 서비스의 구조를 제안하고 구현 사례를 보였다. 또 제안된 서비스 구조가 유연한 확장성과 발전성을 갖는다는 것을 보이기 위해 웹 서비스와의 연동을 통한 확장된 서비스 사례를 보였다. 추가적으로 우리의 제안 구조가 기존의 중앙 집중형 음성 통신 시스템과 호환성을 갖출 수 있도록 하는 방안도 제시한다.

• Journal of the Korean Society for information Management
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• v.20 no.4 s.50
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• pp.211-232
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• 2003

This study introduces the integration-style knowledge management of digital libraries in extended library concept, for integrated knowledge system which can provide various types of knowledge, and presents the knowledge-rump-type knowledge management model. By applying the model to the cases of several institutions, the processes and levels of extension are analyzed, and the important tasks for activating knowledge management are suggested. The knowledge pump embodies ideal roles of the digital libraries that activate the acquisition and distribution of knowledge. It is significant that the digital libraries, which used to remain as a simple application of information technology, not only present logical basis and way for extending their roles and areas, but also explain the implementation methodologies.