• Proceedings of the KSRS Conference
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• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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• pp.533-536
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• 2004

Presently, heat island phenomenon, leading towards global warming, is one of the major environmental problems. As a solution of this problem, roof and surface wall planting is considered to be effective. Accordingly, the objective of this study is to examine the effectiveness of roof planting in reducing the heat island phenomenon. The results of the study show that, planted area of the observed house roof had lower average temperature, in between $l5-20^{\circ}C,$ in comparison with that of the unplanted area of the roof.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 한국전기전자재료학회 2010년도 하계학술대회 논문집
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• pp.152-152
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• 2010

본 연구에서는 인광 효과가 큰 heavy metal 인 이핵 Iridium 착체가 합성된 구조적, 광학적 및 전기적 특성을 배경으로 하였다. 가교제로는 카본 conjugated 된 리간드 bipyridine계 배위자를 사용하여 단핵 및 이핵 Platinum 착물 화합물을 합성 하였다. 합성 되어진 이핵 Platinum 착물 화합물의 화학적 구조를 결정하기 위해 $^1H(^{13}C)$-NMR, UV-vis, Spectro Photometer, MALDI TOF-MS 등을 사용하였으며, 광 물리적, 전기화학적 측정을 Spectrofluoromete, Cyclic Voltammetry를 통해 관찰 하였다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 한국해양정보통신학회 2008년도 추계종합학술대회 B
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• pp.612-614
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• 2008

Organic photovoltaic effects were studied in a device structure of ITO/CuPc/Al and ITO/CuPc/$C_{60}$/BCP/Al. A thickness of CuPc layer was varied from 10nm to 50nm, we have obtained that the optimum CuPc layer thickness is around 40nm from the analysis of the current density-voltage characteristics in CuPc single layer photovoltaic cell. From the thickness-dependent photovoltaic effects in CuPc/$C_{60}$ heterojunction devices, higher power conversion efficiency was obtained in ITO/20nm CuPc/40nm $C_{60}$/Al, which has a thickness ratio (CuPc:$C_{60}$) of 1:2 rather than 1:1 or 1:3. Light intensity on the device was measured by calibrated Si-photodiode and radiometer/photometer of International Light Inc(IL14004).

• Agricultural and Biosystems Engineering
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• 제4권1호
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• pp.28-33
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• 2003

Achievements in the real-time soil spectro-photometer are: an improved soil penetrator to ensure a uniform soil surface under high speed conditions, real-time collecting of underground soil reflectance, getting underground soil color images, use of a RTK-GPS, and all units are arranged for compactness. With the soil spectrophotometer, field experiments were conducted in a 0.5 ha paddy field. With the original reflectance, averaging and multiple scatter correction, Kubelka-Munk (KM) transformation as soil absorption, its 1st and 2nd derivatives were calculated. When the spectra was highly correlated with the soil parameters, stepwise regression analysis was conducted. Results include the best prediction models for moisture, soil organic matter (SOM), nitrate nitrogen (NO$_3$-N), pH and electric conductivity (EC), and soil maps obtained by block kriging analysis.

• Proceedings of the KSRS Conference
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• 대한원격탐사학회 1998년도 Proceedings of International Symposium on Remote Sensing
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• pp.404-408
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• 1998

Yellow sand event has been studied using SeaWiFS data in order to examine the aerosol optical characteristics in the Yellow Sea and their influences on the atmospheric correction for the ocean color remote sensing. Two SeaWiFS images of April 18 and April 25, 1998, representing Yellow Sand event and clear-sky case respectively, are selected for emphasizing the impact of high aerosol concentration on the ocean color remote sensing. It was shown that NASA's standard atmospheric correction algorithm treats yellow sand area as either too high radiance or cloud area, in which ocean color information is not generated. SeaWiFS aerosol optical thickness is compared with nearby ground-based sun photometer measurements and also is compared with radiative transfer simulation in conjunction with yellow sand model, examining the performance of NASA's atmospheric correction algorithm in case of the heavy dust event.

• Proceedings of the Korean Vacuum Society Conference
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• 한국진공학회 2011년도 제41회 하계 정기 학술대회 초록집
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• pp.226-227
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• 2011

금속 산화물 계 선택적 투과막을 투명 태양전지 내에 채용함으로서 태양전지의 변환효율을 증가시킬 수 있다. 입사된 빛이 파장에 따라 선택적으로 투과되는 특성을 갖는 선택적 투과막은 가시광선은 투과시키고, 적외선 영역은 광흡수층으로 반사시키는 역할을 한다. 선택적 투과막을 형성하는 방법은 atomic layer deposition (ALD)이 널리 알려져 있고 최근에 기존의 ALD에 비하여 제조원가를 절감할 수 있는 스퍼터 (sputter) 증착을 이용하여 Al 및 Ti 산화물 계선택적 투과막을 형성한 결과가 보고되었다. 본 연구에서는 스퍼터 증착으로 형성된 Al-Ti-O(ATO) 박막의 투과율과 반사율을 UV/vis spectro photometer를 이용하여 측정하고 증착 조건을 조절함으로써 투명 태양전지에 적용하기 적합한 광학적 특성을 나타내는 선택적 투과막을 얻고자 하였다. 스퍼터링 전력을 다르게 하여 Al과 Ti의 조성비를 조절함으로써 ATO 박막의 가시광선 대역 투과율을 높일 수 있음을 확인하였다.

• Journal of The Korean Digital Architecture Interior Association
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• 제12권3호
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• pp.81-89
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• 2012

Luminance is the most important quantity in lighting design and illuminating engineering. There are three methods for measuring luminance; using a conventional luminance meter, through the illuminance measurement and subsequent calculations and using digital imaging photometer. Recently, HDRI(High Dynamic Range Imaging) technique introduces a new method of capturing luminance values in a lighting environment. The radiance maps from HDRI are commonly used as visual environment maps for lighting analysis applications. For the HDRI, HDR software is needed to create HDR image. Currently, there is number of HDR software available. The purpose of this paper is to investigate whether a luminance map can be accurately captured by the various types of HDR software which include HDR Shop and Photoshop. To accomplish this goal a set of experiments was conducted. In order to assess the luminance values of the HDR image from HDR software, the values had to be compared to the ones obtained with conventional methods of luminance measurement.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• 제28권2호
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• pp.104-108
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• 2015

Al thin films were deposited on TiN/Si(100) via metal-organic chemical vapor deposition using N-methylpyrrolidine alane as a precursor. Characterization of the deposited films were investigated with SEM, XRD, ${\alpha}$-step, AFM, 4-point probe. The early stage of Al thin film deposition was analyzed by in-situ surface reflectance measurement with laser and photometer apparatus. The surface reflectance were changed greatly during the initial 30~40 seconds. There were two increases and two decreases in the surface reflectance, thus the sequence of Al films were deposited at 8 significant points of the surface reflectance change. Surface topograph and cross-sectional view of each film were analyzed with SEM. Al films were grown in the complex mechanism of Volmer-Weber and Stranski-Krastanov process.

• The Transactions of The Korean Institute of Electrical Engineers
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• 제58권2호
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• pp.369-372
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• 2009

When measuring the luminous flux of a light source at the integrating sphere photometer, it can know the luminous flux to compare the standard lamp with the specimen lamp at the same location. But in case of PLS(plasma lighting system, microwave discharged lamp), that two lamps are cannot be the same location. If the reference illuminant and specimen lamp are cannot measure identical location, we should measure the variation of the luminous flux. For the outcome we can turn out a correction factor to revise and reflect it. But the better way is calibrate the specimen lamp locate the identical location of reference illuminant measured. In this thesis, we've test to find the correction factor for consider that change the measuring location. And it turns out the correction factor. From this, it presents the result to make a select for the reference illuminant which is against the illuminant type for newly produce.

• Journal of the Korean Chemical Society
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• 제20권2호
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• pp.153-157
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• 1976

The purpose of this paper is to use lignin. Lignin was obtained by digestion of Korean pine wood, purified, and identified. After carbonizing lignin by con $c-H_2SO_4$, the resulting carbon was converted into active carbon by activating it in the electric kiln. The adsorptivity of this active carbon was obtained by measurement with a spectro-photometer. It has been found as a result that adsorption power is 89%.