• Proceedings of the IEEK Conference
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• 1999.06a
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• pp.219-222
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• 1999

A SBR/Image ray-tracing technique using triangular ray tubes to predict the effects of walls. rooms. floors, and staircase is considered. Suggested technique is very efficient to estimate the path loss in three-dimensional buildings including the staircase. The model to predict the path loss through walls and floors in a multifloored building is presented. Measurements are made for three corridors having the staircase at 850 MHz, Measured data shows a close agreement with a simulated data.

• Proceedings of the IEEK Conference
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• 1999.06a
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• pp.94-97
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• 1999

In this paper, a new real-time neural network connection admission controller is proposed. The proposed controller measures traffic flows, cell loss rate and cell delay periodically each classes. The Neural network learns the relation between those measured information and service quality by real-time. Also the proposed controller uses the DWRR multiplexer with buffer dedicated to every traffic source in order to measure the delay that cells experience in buffer. Experimental result shows that the proposed method can control effectively heterogeneous traffic sources with diverse QoS requirement.

• Proceedings of the Korean Ceranic Society Conference
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• 2000.10a
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• pp.170.2-170
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• 2000

• Journal of Periodontal and Implant Science
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• v.22 no.1
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• pp.196.1-196.1
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• 1992

• Proceedings of the Korean Institute of Building Construction Conference
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• 2017.05a
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• pp.212-213
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• 2017

The study investigated the fluidity and compressive strength of non-cement porous block using blast furnace slag powder to reduce CO₂ in the construction industry.

• Information and Communications Magazine
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• v.30 no.7
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• pp.63-73
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• 2013

스마트 폰/탭 등 소형 스마트 기기의 대중화로 모바일 트래픽은 급증하고 있다. 사람이 들고 다니는 모바일 기기에 의해 트래픽이 발생되는 네트워크의 특성상, 그 성능은 사람의 이동 패턴에 의존할 수 밖에 없다. 안정적인 성능을 보장하기 위해서는 다양한 환경에서의 실험이 필수이나, 실제 모바일 기기들을 사용한 실험은 그 비용이나 소요 시간 등을 고려할 때 불가능한 일이라 할 수 있다. 이를 해결하기 위해 사람의 이동성 모델을 사용한 다양한 시뮬레이션으로 실험을 대신해 왔다. 본 고에서는 그 동안 제안된 수많은 인간 이동성 모델을 소개하고, 그 특성을 알아본다.

• Venture DIGEST
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• s.65
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• pp.12-13
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• 2005

협회와 전자신문사가 공동 주최하는‘제11차 벤처CEO포럼’이 지난 23일 르네상스호텔에서 열렸다. 이날 포럼에서 중소기업청 김성진 청장은 ‘벤처기업 활성화 대책’과 관련 부연설명을 하였고, 한양대 한정화 교수는‘벤처 생태계 현황과 과제’를 주제로 발표하였다. 발표 후 삼성경제연구소 강원 연구원, 중앙일보 홍승일 차장, 협회 장흥순 회장은 벤처지원의 구체적 방안에 대해 심도 있는 토의를 벌였다. 다음은‘2005년 벤처재도약을 위한 벤처 생태계의 현황과 정책과제’를 정리한 글이다.

• Proceedings of the Korea Contents Association Conference
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• 2013.05a
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• pp.447-448
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• 2013

본 연구는 발주청에서 발주 관리되는 설계, 감리, 건설사업관리 용역실적정보를 건설분야별 사업단계별로 관리체계를 마련하고 용역사와 발주청에서 용역실적정보를 체계적으로 등록 관리할 수 있도록 업무처리 프로세스를 개선하고자 한다.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.5 no.2
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• pp.59-62
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• 1999

After reported that Styrene dimer and Styrene trimer was Endocrine Disrupter, if it was a fact or not, the sales of PSP noodle cup was rapidly decreased and social responsibilities of the substitution materials development was raised. Therefore we had studied many materials like paper, pulp mold, PP injection molding, PP lamination, etc as substitution materials and selected paper cup which was safe in many sides and easy to recycle. Mainly we had checked the shape, safety, stability and recycling possibility of paper cup and secured many data which could prove them.

• Biomolecules & Therapeutics
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• v.8 no.2
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• pp.179-183
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• 2000

To determine biosafety of fluorosilicic acid as a source of fluoride, we carried out acute toxicity and general pharmacological studies using mouse. Fluorosilicic acid had little effects on general behavior, pain response, convulsion, skeletal muscle function and intestinal mobility as compared to controls. It had either little adverse effects on alkaline phosphatase and collagen levels in osteoblast cells. This study supports the safety of fluorosilicic acid in animals.