• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2017년도 공동학술발표회
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• pp.154-154
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• 2017

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2008년도 정기 학술대회
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• pp.265-268
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• 2008

With application of IT convergence technique in AEC industry, it is currently conducted the research on the virtual construction system. This paper aims at the pilot study on the structural design based on BIM used in collaboration environment. The work scope of structural design includes the structural analysis model, structural detail model and analytic model and we focuse the research on the interoperability among them. It is partly utilized the transfer module supplied by software developer and partly developed here the interface module through API. This paper shows the interoperability process to pilot test and indicates the problems occurred in interface.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 제14회 신호처리 합동 학술대회 논문집
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• pp.923-926
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• 2001

In this paper, we investigate a new approach pilot-symbol-aided channel estimation for orthogonal frequency division multi-plexing (OFDM) systems. Until now, lots of channel estimation methods are proposed. The pilot symbol assisted modulation (PSAM) has good performance. But, our proposed Algorithm has more good performance than the conventional PSAM system. Our algorithm is that channel estimation performance using the less inserted pilot-symbols systems is almost same to the two times inserted pilot-symbols system. The proposed method is highly robust to fast Rayleigh fading channel. Simulation results are presented to demonstrate the performance of our proposed algorithm.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.579-581
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• 2005

One of the latest wonders brought to us by ICT(Information and Communication Technology) is telematics turning automobiles, not long ago a mere means of transportation, into a whole-new digital living space. Telematics is indeed fast becoming a household word, and countries around the globe are giving spur to research and development of core technologies to acquire competitiveness in related IT sectors. This paper discusses the telematics pilot project launched in Jeju to promote the development of telematics technology and stimulate related industries. The objective of the pilot project is to give impetus to research in related technologies and a head-start to Korea in the global race in this technology field. The pilot deployment, covering 6 services, promising to be most demanded in Korea's telematics environment, is sure to make a sizeable contribution toward familiarizing the public with the new technology.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
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• pp.210-211
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• 2006

본 논문은 무효전력 특성에 따라 나누어진 각 지역의 대표 pilot bus 전압을 기준으로 계통 전압을 제어함으로 계통 내에 모든 버스 전압을 통한 제어보다 효율적인 방법을 제시한다. Pilot bus 전압을 기준으로 하는 경우는 계통내 모든 버스의 전압을 기준으로 하는 경우에 비해 필요로 하는 정보의 양이 작을 것이므로 더 효율적이라고 할 수 있다. 본 논문에서는 IEEE 14 버스 시스템에서 특정 상정사고가 일어났을 경우를 가정으로 steady state voltage monitoring and control(SSVMC)를 통한 전압제어 시뮬레이션을 하였다. 모든 버스 전압을 기준으로 한 경우와 pilot bus 전압을 기준으로 SSVMC해준 경우를 비교 제시하였다.

• 한국지하수토양환경학회지:지하수토양환경
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• 제18권2호
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• pp.45-53
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• 2013

Many cases of strategically designed groundwater remediation have lack of information of hydraulic conductivity or permeability, which can render remediation methods inefficient. Many studies have been carried out to minimize this shortcoming by determining detailed hydraulic information either through direct or indirect measurements. One popular method for hydraulic characterization is the pilot point method (PPM), where the hydraulic property is estimated at a small number of strategically selected points using secondary measurements such as hydraulic head or tracer concentration. This paper adopted a D-optimality based pilot point method (DBM) developed previously for hydraulic head measurements and extended it to include both hydraulic head and tracer measurements. Based on different combinations of trials, our analysis showed that DBM performs well when hydraulic head is used for pilot point selection and both hydraulic head and tracer measurements are used for determining the conductivity values.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 춘계 학술발표회
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• pp.543-552
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• 2010

Due to increase in urban tunnelling as urban population and traffic volume increase, problems related with site security and civil appeal also increase. This paper presents a comparative analysis between conventional 2-arch tunnel method and non-pilot 2 arch tunnel method, which were performed in the basic design of Wie-Rae region. According to the analysis results, non-pilot 2-arch tunnel method is more efficient in terms of stability, constructability, and economic aspect. It is authors' wish that design procedure and method presented in this paper could help the design and construction of non-pilot 2-arch tunnel that should be planned in the near future.

• 한국철도학회논문집
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• 제3권3호
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• pp.101-108
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• 2000

In this study, we tested hybrid pilot system combined with soil vapor extraction and bioventing methods on the contaminated railroad soil. So, we found out the remediability and operating conditions. Air permeability(k) and gas phase(O$_2$/CO$_2$/VOCs) level trend are very important to determine the remediation rate of the contaminated sites. Throughout hybrid pilot test on different conditions, the range of air permeability(k) was 1985∼1194 darcy. The tests results in hybrid system was appropriate on this test sites, and the suitable injection air flow rate was 3.5㎥/hr. So, we suggested a basic data for the remediation and management of contaminated railroad soil.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 A
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• pp.90-92
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• 2001

This Paper presents a part of system study results for UPFC Pilot Plant application in Korea. The system study includes short circuit rate of Kangjin S/S which is site of UPFC Pilot Plant, ${\Delta}V/{\Delta}Q$ characteristics in STATCOM mode, P and Q flow control boundary of UPFC Pilot Plant. The system study is simulated by PSS/E Ver. 26.

• ETRI Journal
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• 제28권5호
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• pp.688-691
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• 2006

This letter addresses the superimposed pilot aided multiuser channel estimation for the uplinks of multi-input multi-output orthogonal frequency-division multiplexing systems. To mitigate the embedded-data effects on the performance of channel estimation, a novel combining algorithm is proposed. Optimal pilot symbols are developed with respect to the least square channel estimate's mean square error. The averaged sum-capacity lower bound is derived and simulated. Simulation results show that on a low signal-to-noise ratio regime, our proposed scheme achieves better performance and higher capacity than the conventional pilot aided approach.