• Journal of the Korean housing association
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• v.23 no.5
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• pp.1-8
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• 2012

Recently, there have been frequent occurrence of the damage to lives and properties due to the torrential rain caused by climate change. In consideration of the current situations in which the underlying data related to flooding are lacking, this study conducted to build up the basic data on the flooded areas and suggested methods to secure the evacuation routes that can be accessible to evacuation facilities in the residential buildings. Methods of the study are as follows. First, We calculated the flood risk grades of residential buildings based on elevations, considering the flooding characteristics of the flooded areas in Buk-gu, Daegu. Second, We constructed baseline data on the evacuation routes through site investigation and reviewed of drawing using Arc GIS to identify vulnerability to access to the evacuation facilities, targeting the residential buildings. Third, We carried out the proximity analysis through a near analysis of analysis functions in ARC GIS. Forth, We deduced 115 residential buildings in which access to evacuation facilities is considered to be difficult based on the analysis results. Finally, We proposed extension of a blind alley as a means for achieving connectivity to evacuation facilities. And to evaluate the alternatives presented, we reconstructed route data. As a result, about 53% improvement was identified through the proximity analysis.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.59 no.2
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• pp.436-444
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• 2010

In this study, we introduce and discuss a concept of a granular-oriented radial basis function neural networks (GRBF NNs). In contrast to the typical architectures encountered in radial basis function neural networks(RBF NNs), our main objective is to develop a design strategy of GRBF NNs as follows : (a) The architecture of the network is fully reflective of the structure encountered in the training data which are granulated with the aid of clustering techniques. More specifically, the output space is granulated with use of K-Means clustering while the information granules in the multidimensional input space are formed by using a so-called context-based Fuzzy C-Means which takes into account the structure being already formed in the output space, (b) The innovative development facet of the network involves a dynamic reduction of dimensionality of the input space in which the information granules are formed in the subspace of the overall input space which is formed by selecting a suitable subset of input variables so that the this subspace retains the structure of the entire space. As this search is of combinatorial character, we use the technique of genetic optimization to determine the optimal input subspaces. A series of numeric studies exploiting some nonlinear process data and a dataset coming from the machine learning repository provide a detailed insight into the nature of the algorithm and its parameters as well as offer some comparative analysis.

• Electronics and Telecommunications Trends
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• v.30 no.6
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• pp.31-41
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• 2015

사람은 User Interface(UI)를 통해 기기와 접촉하고 활용하며, 서비스를 제공받는다. 대부분의 입력 도구들은 사용자의 접촉을 필요로 하기 때문에 기기에 접촉이 불가능한 상황에서는 사용자의 의도를 기기에 전달하기 어렵다. 본고에서는 접촉 없이 사용자 입력을 가능하게 하는 기술 중 적외선 근접센서에 기반을 둔 제스처 센싱기술을 소개한다.

• Archives of Plastic Surgery
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• v.44 no.3
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• pp.243-247
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• 2017

Reconstruction of the lower limb presents a complex problem after skin cancer surgery, as proximity of skin and bone present vascular and technical challenges. Studies on vascular anatomy have confirmed that the vascular plane on the lower limb lies deep to the deep fascia. Yet, many flaps are routinely raised superficial to this plane and therefore flap failure rates in the lower limb are high. Fascio-cutaneous flaps based on perforators offer a better cosmetic alternative to skin grafts. In this paper, we detail use of a thermal imaging camera to identify perforator 'compartments' that can help in designing such flaps.

• Proceedings of the Korean Information Science Society Conference
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• 2002.04b
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• pp.478-480
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• 2002

질의 응답 시스템의 성능을 높이기 위해서는 정답 후보(Answer Candidate)를 랭킹하는 방법이 매우 중요하다. 본 논문에서는 기존의 정답 후보 랭킹을 위해 사용하던 위치 근접성의 문제점을 제시하고, 이를 보완하기 위한 구문 근접성을 이용하는 방법에 대해 제안한다. 실험 결과는 논문에서 제안한 구문 근접성을 사용한 정답 후보 랭킹 방법이 위치 근접성을 이용만 방법보다 더 개선된 방법임을 보여준다

• Proceedings of the IEEK Conference
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• 1999.11a
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• pp.975-978
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• 1999

The transmission line effects of IC interconnects have a substantial effect on a hish-speed VLSI circuit performance. The effective transmission lime parameters are changed with the increase of the operation frequency because of the skin of the skin effect, proximity effect, and silicon substrate. A new signal delay estimation methodology based on the RLC-distributed circuit model is presented ［2］. The methodology is demonstrated by using SPICE simulation and a high-frequency experiment technique.

• Proceedings of the IEEK Conference
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• 2003.07a
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• pp.39-42
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• 2003

Due to the highly dynamic topology and absence of any fixed infrastructure, stability of selected path in Ad Hoc Networks is of prime importance. The frequent route failure and high control overhead in routing protocol consumes system resources and lead to degraded system performance. In this paper we present route stability metrics reflectting relative position and velocity of nodes, which help determine a stable route.

• Information and Communications Magazine
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• v.30 no.12
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• pp.97-104
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• 2013

최근 스마트폰, 태블릿등과 같은 모바일 인터넷 기기들이 폭증함에 따라 Bluetooth 또는 WiFi P2P와 같은 기존 단말 간 통신 기술에 비해 넓은 전송 범위와 높은 QoS (Quality of Service)를 보장할 수 있는, 새로운 근접 서비스 기반(Proximity-based service)의 단말 간 (Device-to-device: D2D) 통신 기술에 대한 필요성이 대두되고 있다. 본 논문에서는 D2D 기술을 이용한 서비스 및 해당 서비스를 위한 요구사항들과 이를 지원하기 위한 요소기술들, 그리고 IEEE와 3GPP에서 활발히 진행되고 있는 D2D 통신 기술의 표준화 동향을 살펴보고자 한다.

• The Optical Journal
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• s.161
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• pp.58-73
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• 2016

사람은 User Interface(UI)를 통해 기기와 접촉하고, 활용하며 서비스를 제공받는다. 대부분의 입력 도구들은 사용자의 접촉을 필요로 하기 때문에 기기에 접촉이 불가능한 상황에서는 사용자의 의도를 기기에 전달하기 어렵다. 본고에서는 접촉 없이 사용자의 입력을 가능하게 하는 기술 중 적외선 근접센서에 기반을 둔 제스처 센싱기술을 소개한다.

• Proceedings of the KSRS Conference
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• 2002.10a
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• pp.854-859
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• 2002

Location Based Services, or LBS refers to value-added service by processing information utilizing mobile user location. With the rapidly increasing wireless internet subscribers and world LBS market, the various location based applications are introduced such as buddy finder, proximity and security services. As the killer application of the wireless internet, the LBS has preconsidered technology about location determination technology, LBS middleware server for various application, and diverse contents processing technology. This paper describes the open architecture for LBS platform ensuring interoperability among the wireless networks and various location-based application services and the functional requirements for the LBS platform. The LBS platform in a narrow sense provides a standard interfaces for location management and network management for location services as follows, positioning (location acquisition through network or/and handset), location managing, location based functions, profile management, authentication and security, location based billing, information roaming between carriers and the system monitoring independent to specific network or ISP/CPs(Content Providers).