• 제어로봇시스템학회:학술대회논문집
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• 1995.10a
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• pp.295-298
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• 1995

In this paper, one simple technique to calibrate the system setting of the three-dimensional measuring system is presented. Due to this technique, the three-dimensional shape of the huge structures and the buildings can be readily obtained. This technique is applied to the three-dimensional landscape simulation. Two examples are shown in this paper.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2009.10a
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• pp.55-56
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• 2009

• Proceedings of the Korean Society of Medical Physics Conference
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• 1999.11a
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• pp.316-319
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• 1999

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.10a
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• pp.115-116
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• 2001

해조류는 우리나라의 경우 예로부터 식용으로 널리 이용되어 왔으나 대부분 채취된 그대로 섭취하거나 건조나 염장과 같은 단순가공에 머무르고 있다. 최근 해조류에 여러 가지 생리활성물질이 존재한다는 것이 알려지면서(Fujimoto et al., 1985; 조 등, 1995), 해조류 연구에 있어서 종래의 해조다당류가 갖는 물리ㆍ화학적 연구(김과 밖 1984)에서 벗어나 해조류의 부가가치를 향상시키고 해조류 소비촉진을 위한 새로운 가공기술에 대한 연구가 진행되고 있다. (중략)

• Proceedings of the Optical Society of Korea Conference
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• 2008.02a
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• pp.247-248
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• 2008

• Proceedings of the Korea Environmental Mutagen Society Conference
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• 2001.10b
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• pp.22-23
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• 2001

• Proceedings of the IEEK Conference
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• 2000.07a
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• pp.187-190
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• 2000

In this paper, we proposed a PLL with the clock count type frequency detector, in which the very fast pull-in time can be realized by resetting the VCO at the rising of input signal after charging the capacitor of loop filter with the voltage corresponding to the frequency of the input signal.

• Journal of the Optical Society of Korea
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• v.11 no.2
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• pp.63-66
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• 2007

A 9.6 dB gain is observed at 1310 nm in a 5.0 cm bismuth-doped silica fiber. A launched pump power of 100 mW was obtained using an 810-nm laser diode. We demonstrated the simultaneous optical amplification at two wavelengths near second telecommunication windows, which is the range of zero-dispersion for silica fibers.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2008.03a
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• pp.63-65
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• 2008

CFD cold-flow analysis results of the air-blast swirl nozzle for the small aircraft engine combustor are shown. Two major recirculation zones are observed near the nozzle. The centerline recirculation zone velocity profile of CFD is compared with the experimental results.

• 제어로봇시스템학회:학술대회논문집
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• 1993.10b
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• pp.440-445
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• 1993

A two dimensional large scale laser digitizer with a cordless cursor was developed. The coordinate detecting scheme of this digitizer is fundamentally based on the triangulation method, in which two laser-rays are scanned by the rotating plane mirros, reflected backward by the cursor, reflected again by the rotating mirrors, and detected by optical sensors. From angles in which the cursor reflections are detected, we can determine the position of the cursor. But this method involves several problems about optical alignment and its calibration especially when it is applied to a large scale digitizer. In this paper, especially we propose simulation for error analysis with connection to angles measured at five control points which are needed to decide an appropriate model for calculating coordinates and optimal simulation for deciding the position of five control points to give the better coordinate accuracy. In this way, we realized the on-site calibration and on-site insurance of measurement accuracy with our appropriate model for calculating coordinates. The time required for on-site calibration is within 5 minutes and the average accuracy of 4m * 3m digitizer is about .+-.0.12mm.