• Journal of the Korea Society of Computer and Information
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• v.17 no.2
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• pp.105-112
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• 2012

The purpose of this paper is to suggest a method that .NET smart web development is enhanced through Managed Hybrid Web to improve the problems of UI development and representation in Hybrid Web. Improvement of structured system design of Managed Hybrid Web can enhance the efficiency and extendability of the interface objects. In particular, Source convenience is further enhanced regarding to coexistence of the objects if a client and server technique is applied to the class generation ways. It comes to the conclusion that the application of the user interface has the free representation ways, and the extension of representation ways can be achieved by each part independence.

• Journal of Korean Association for Spatial Structures
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• v.4 no.2 s.12
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• pp.99-105
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• 2004

The structure systems with non-rigid member were classified by the composition type of line and surface members. As a result of the classification, there are 1-way cable structure, cable net and radial cable net structure in the line member system. And there are pneumatic structure and suspension membrane structure in surface member system. In addition, when the line and surface members are composed together, there is the hybrid membrane system which are divided into hanging type and supported type. In this paper, the Korean terms of structure systems with non-rigid member are recommended through this classification.

• Proceedings of the KAIS Fall Conference
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• 2011.05b
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• pp.749-752
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• 2011

본 논문에서는 현재 출시되어 있는 소프트타입의 현대 아반테 하이브리드자동차와 하드타입 방식의 도요다 프리우스 자동차를 대상으로 차대 동력계상에서 CVS-75 모드를 주행하면서 발생하는 배출가스특성과 연비특성을 실험적으로 분석하였다. 가솔린 차량에 비해 하이브리드 차량의 연비 및 배출가스 특성이 탁월하였으며 특히, 하드타입의 하이브리드 차량이 소프트타입의 차량에 비해 연비개선효과가 우수하게 나타났다.

• Proceedings of the KIPE Conference
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• 2020.08a
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• pp.385-386
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• 2020

최근, 에너지저장장치를 활용하여 태양광-ESS 하이브리드 시스템이 도입되고 있다. 태양광-ESS 하이브리드 시스템은 구성방식에 따라 다양한 전력변환장치를 활용한다. 그중 DAB 컨버터는 절연형이며, 양방향 전력전달이 가능하므로 스위칭 기법, 토폴로지 개발 등 연구가 활발히 진행되고 있다. 본 논문에서는 태양광-ESS 하이브리드 시스템에 적용되는 대표적인 벅-부스트 컨버터와 DAB 컨버터에 대해 리뷰한다.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.40 no.8
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• pp.485-494
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• 2016

In this work, we conducted a study of fuel consumption characteristics and regenerative braking recovery rate by conducting an experiment using a TMED type parallel hybrid electric vehicle. As regenerative braking technology is considered essential to improve the energy efficiency of the hybrid vehicle, it is necessary to conduct research on the regenerative braking system. Therefore, the electrical characteristics, current balance, and fuel consumption were investigated using an EC type chassis dynamometer with experimental conditions as per IM240 mode. From the results, it was observed that when the initial SOC condition was lower, the engine operating time of the hybrid vehicle increased, and the energy efficiency decreased. While operating in the driving mode characteristics condition and the driving characteristics condition, the difference in the average fuel consumption was not significant. However, after completion of the experiment, there was a difference in the engine operation.

• Journal of the Korea Society of Computer and Information
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• v.19 no.7
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• pp.59-70
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• 2014

This paper propose a new wireless multi-hop routing protocol that takes the hierarchical mesh of the hybrid WMN into account. WMN that is possible to provide various applications of wireless networks still has many open issues that should be solved despite the studies carried out over a decade. Especially, in routing protocol area, a problem degrading the routing efficiency by applying one of the routing protocols, which are designed for the MANET, to the hybrid WMN be solved above all. For the improvement of the routing performance, both good routing protocol and metric are essential. However, the recent studies are only concentrated in routing metric by use of the cross-layer design. Therefore, this paper is dedicated to the routing protocol that is essential for the performance of the routing but needed more studies. The proposed protocol in this paper is reactive, and designed to reorganize the hybrid WMN with several pseudo domains, and carry out domain-based route decision. By the simulation result for the performance analysis of the proposed protocol, the average delay for the route decision was decreased by 43% compared to AODV that is the typical reactive protocol.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05b
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• pp.1493-1496
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• 2003

본 논문에서는 하이브리드 SC/MRC 다이버시티 방식을 DS/CDMA 시스템에 적용하였을 경우, 다중경로 페이딩 채널환경에서 페이딩 지수와 다이버시티의 브랜치 수가 시스템의 BER성능에 미치는 영향을 MRC 다이버시티 방식과 비교 분석하였다. 또한, 브랜치 수는 2, 3, 4인 경우를 고려하였으며, 브랜치 수에 따른 각 다이버시티 방식을 적용하였다. 실제 통신 환경이 열악한 경우 시스템의 복잡도를 줄이면서도 비슷한 성능을 얻을 수 있는 방법으로 각 브랜치 수에 수신되는 강도가 센 몇몇 신호를 가진 경로를 선택하는 하이브리드 SC/MRC 다이버시티 방식이 MRC 다이버시티방식을 대신할 수 있는 방식임을 입증하였다.

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.1483-1484
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• 2015

부분방전 진단 기술 분야에서는 노이즈의 영향을 최소화할 수 있는 기법이 요구되고 있는 실정이다. 본 논문에서는 부분방전과 노이즈 신호 추출을 위한 로그앰프의 반응 속도차와 부분방전 신호특성을 비교하여 노이즈를 제거하는 SRPDA(Speed Related Partial Discharge Analysis)를 적용한 부분방전 진단 시스템의 개발 내용을 나타내었다. 또한 본 시스템은 광대역 방식의 장점인 빠른 검출 속도와 협대역 방식의 장점인 적은 노이즈의 영향의 장점을 취하는 동시에, 광대역 방식의 단점인 큰 노이즈 영향과 협대역 방식의 단점인 느린 진단 속도를 개선할 수 있는 하이브리드 방식을 채택하여, 기존 부분방전 진단 시스템의 신뢰성을 개선할 수 있을 것으로 사료된다.

• Journal of the Korean Society for Railway
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• v.12 no.1
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• pp.122-128
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• 2009

A bimodal low-floor tram is designed to provide the flexibility of bus and the punctuality of trains together to the passengers. The propulsion equipment of the bimodal tram is a series hybrid type using a set of CNG engine generator and Li-polymer battery. The present paper describes the specifications of the propulsion system in the bimodal tram which was drawn by a desirable driving cycle. In addition, it shows how the propulsion system of the bimodal tram can be controlled. With using a computer simulation tool of hybrid vehicles, ADVISOR, the performance of the bimodal tram was verified.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.10
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• pp.1862-1872
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• 2017

To overcome the limitations of the current Central Mobility Management (CMM) protocols, IETF has been discussing about the Distributed Mobility Management (DMM) protocols that the centralized mobility functions of Home Agents (HA) are distributed to network edges closer to mobile users. The DMM protocol has some advantages of low-cost traffic delivery and high scalability. However, it faces several problems such as a high signaling cost and a complex address management. Especially, users moving at a high speed and with long-live sessions can make these problems worse. To reduce the high signaling cost for long-live sessions, we propose a novel hybrid DMM protocol allocating different mobility anchors according to the session durations. In this paper, we analyze the performance of the proposed hybrid DMM protocol and show superior performance with respect to the signaling cost.