• 한국측량학회:학술대회논문집
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• 한국측량학회 2009년도 춘계학술발표회 논문집
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• pp.119-123
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• 2009

In the areas of civil engineering or cadastral surveying, multi-orientation process such as setting out boundary mark is regarded as one of the important tasks, measuring land feature and indicating acquired data to the grounds. In case of using dual frequency receiver and TS(total station), there are much advantages in setting out surveying results in the field. However, it costs very expensive and the equipments for enhancing correctness are very complex. In this study, technical factor was reviewed in which single frequence receiver and TS, comparatively cheap and easy to establish a system, was connected into TS(Total Station) in order to make easy to orientation and setting out. As a result of this study, it was possible to support GPS and TS surveying and set out it by short distance wireless communication method using single frequency GPS receiver. And by developing the system, it also could lessen the time of setting out in large areas and difficulty of the surveyors in the field.

• 한국컴퓨터정보학회논문지
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• 제19권2호
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• pp.57-65
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• 2014

3D 애니메이션에서 사운드 효과는 몰입감을 증대시키는 주요한 요인이다. 특히 사운드와 영상 사이의 상호작용은 의미의 전달을 극명하게 만드는 하나의 표현방식으로 영상제작에서 여러 가지 방식으로 응용된다. 사운드와 영상의 상호 작용 중에 아웃포커싱 기법은 실사 영상과 3D 애니메이션에서 많이 사용하는 기법으로 정지된 물체에 역동성을 가미할 수 있는 표현 방법이다. 그러나 실사촬영과는 달리 3D 애니메이션의 경우 뮤직비디오나 폭파 장면등에 아웃포커싱을 구현하는 것은 까다로운 작업이다. 더욱이 음원의 리듬에 동기화된 영상효과를 표현하기 위해서는 키프레임 조작을 수동으로 해야 하므로 매우 번거롭다. 본 연구는 음원데이터를 활용하여 영상과 이상적인 결합을 살펴보고 카메라의 피사계 심도를 음원에 동기화시켜 장면을 아웃포커싱하는 새로운 제작 기법을 제안한다.

• 한국해양공학회지
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• 제15권3호
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• pp.28-34
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• 2001

The experimental studies for the artificial reef (AFR) subsidence characteristics in the unsteady flow field and in the unsteady flow-wave field were carried out. The difference of scou $r_sidence characteristics between in the steady flow field and in the unsteady flow field wad discussed and also the long-term subsidence characteristics in the unsteady flow field were investigated. AFR subsidence characteristics was discussed with Keulegan - Carpenter number(KC), Reynolds number (Re),. Shields number (Sn) and dimensionless time (t/Tt). And the difference of subsidence characteristics between in the unsteady flow and in the unsteady flow-wave field was discussed.ed.

• 한국해양공학회지
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• 제15권3호
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• pp.29-29
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• 2001

The experimental studies for the artificial reef (AFR) subsidence characteristics in the unsteady flow field and in the unsteady flow-wave field were carried out. The difference of scour/subsidence characteristics between in the steady flow field and in the unsteady flow field wad discussed and also the long-term subsidence characteristics in the unsteady flow field were investigated. AFR subsidence characteristics was discussed with Keulegan - Carpenter number(KC), Reynolds number (Re),. Shields number (Sn) and dimensionless time (t/Tt). And the difference of subsidence characteristics between in the unsteady flow and in the unsteady flow-wave field was discussed.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2004년도 추계학술대회논문집
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• pp.164-167
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• 2004

The draw, trim, flange, and cam forming processes of automotive fender panel are simulated, focused on the springbacks. Simulation results are compared with field try-out. In order to compensate the differences between simulation and try-out, the draw bead shapes in the simulation are modified and the accuracy of the simulation is improved by comparing blank draw-in amounts. The spring-backs after formings are also found in the simulation. Finally, the simulation procedures for analyzing the springbacks in all stamping processes are established.

• 소음진동
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• 제7권3호
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• pp.457-466
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• 1997

The experimental and analytical study was conducted to determine the noise transmission characteristics of acoustically loaded steel plate of rectangular enclosure and to investigate the sound radiation characteristics through out the enclosure. The vibrations of acoustically loaded plate give rise to sound radiations and generate the reverberant space that the sound field exists very close to a vibrating plate. Acoustic transmission loss is measured from the incident intensity into the plate and the transmitted intensity through out the plate. Sound radiation patterns are measured from both acoustic intensity technique and surface intensity technique. Those resultant patterns and vibrational modes are vital in understanding the relations between vibration and noise in the near field out of vibrating plate.

• 한국유체기계학회 논문집
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• 제8권4호
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• pp.7-13
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• 2005

Although the globe is the most typical valve to control high pressure drop in piping system, it is very hard to figure out the characteristics of flow field in the globe valve caused by its complex geometry, So there is very few studies to find out flow characteristics of globe valve. In this study numerical analysis for flow field in the globe valve is carried out using the FLUENT code which is commercial CFD program. Pressure drop through the globe valve is also measured to verify the results come from numerical analysis. Comparing experiment with numerical analysis, two results are very close to each other.

• 컴퓨터교육학회논문지
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• 제9권5호
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• pp.53-64
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• 2006

본 논문에서는 웹과 모바일을 연동한 현장체험학습 지원시스템을 제안한다. 웹과 모바일을 연동한 현장체험학습 지원시스템은 현장체험학습을 계획, 진행, 평가하는 과정을 지원한다. 현장체험학습의 프로세스를 크게 사전활동, 현장활동, 사후활동의 세 가지로 나누고 웹과 모바일의 연동을 통해 통합적으로 지원, 관리, 운영한다. 현장체험학습을 통해 학습자들의 창의성과 자율성, 협동성을 길러주는 교육적 효과를 보다 높이고자 한다.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2003년도 The Fifth Asian Computational Fluid Dynamics Conference
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• pp.144-145
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• 2003

A feasibility study on the alternating jet flow under the static electromagnetic field was carried out. When a fluid with electrical conductivity lies in the static electromagnetic field and moves electric current occurs in the fluid. Due to the electromagnetic field and the electric current, lorentz force generates in the fluid, which undergo the 'breaking' effect to the fluid. In order to simulate the complex fluid flow in the magnetic field, electromagnetic and fluid flow analysis need to be solved simultaneously. In the present study, a SOLA (SOLution Algorithm) scheme was used in order to calculate electromagnetic and fluid flow field. Jet flow without an electromagnetic field was compared with analytical solution in order to validate the flow analysis scheme. Effect of jet velocity on the flow pattern down the jet was investigated.

• 한국문헌정보학회지
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• 제56권3호
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• pp.153-179
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• 2022

본 연구에서는 표준현장실습학기제의 도입의 가능성과 무급운영이 가능한 자율 현장실습학기제 운영가능성에 대해서 살펴보고, 현장실습기관들을 대상으로 설문조사를 함으로써 이들의 인식조사를 기반으로 한 대응전략을 제안해 보고자 하였다. 연구결과, 첫째, 실습기관의 직무관련 교육시간의 배정시간을 포함하여 운영시간 및 운영방식에 대해서는 매우 낮은 인식을 보여주고 있음을 알 수 있다. 둘째, 표준현장실습의 도입상황에 대해서 매우 낮은 인지도를 보여 주었고, 표준현장실습의 내용, 표준현장실습 운영서 및 협약 내용, 표준현장실습 내용 변경 사실, 표준현장실습 수행시 실습 지원비, 표준현장실습 근로계약에 관한 구체적인 내용, 실습기관의 요건 충족도 등에서 매우 낮은 인식도를 보여 주었으며, 다만 표준현장실습의 도입 배경에 대해서는 이해하고 공감하는 것으로 보인다. 이를 기반으로 본 연구에서는 설문조사를 포함한 문헌연구를 기반으로 표준현장실습 도입시 고려 사항으로, 표준현장실습학기제 적용제외 대상으로 법개정, 표준현장실습학기 또는 자율현장실습학기제 채택 고민, 현장실습기관의 충분한 확보 및 공유, 그리고 현장실습매뉴얼의 개발과 공동활용 등이다.