• Journal of the Korean Institute of Rural Architecture
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• v.14 no.4
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• pp.77-87
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• 2012

This study aims to analyze architectural characteristics of lighthouse which were built in marine area. For achieving this goals, 78 lighthouses were set up as research targets, as they major lighthouses nationwide selected by the Korea Association of Aids to Navigation. The lighthouse of our country with a long historical time, as well as the value aspect in the construction of wooden centered way to the construction of buildings with brick, concrete, granite, that have influenced building. However, has so far not been actively in research on Lighthouse. For this study, site investigation was carried out measurement survey, photography and visual inspection of the lighthouse for the work of recording pixels lighthouse facility. Based on surveyed results, architectural characteristics of lighthouses were examined.

• Journal of the Korean Graphic Arts Communication Society
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• v.22 no.2
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• pp.37-54
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• 2004

IPNs have interpenetrating motion and phase separation behavior of independent polymers, respectively, and also these are affected by the physical interaction of polymer components. First of all, 2- and 3-component IPNs based on PU are prepared by combination with two or three components of PU, PMMA, PS and epoxy resin. And then the entire physical properties concerning morphological and mechanical behaviors of these IPNs are measured by employing FT-IR, SEM, Rheovibron, and DSC, etc. Compared with pure component, Tg's of IPN are shifted to higher temperature in all IPN kinds, and these are considered in attribution to internal movement of glass transition temperature or partial phenomenon of interpenetration. Rheovibron measurement results in a broader distribution with peaks of tan${\delta}$ or E", and this morphologically represents a medium degree of partially mixed IPNs in confirmation of SEM photographs.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1997.10a
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• pp.295-298
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• 1997

Recycl ing of PP/EPR based bumper coated with polyester urethane paint has been per formed by chemical decoating method. Electronic Speckle Pattern Interferometry (ESP11 has been applied to characterize the deformation of polyolef in based bumper. In additon, physical properties and processability of recycled materials have been investigated by dynamic mechanical thermal analysis, impact test and melt flower index measurement. The results show that the deformation ratio of recycled material is higher than that of virgin one. The morphological change of EPR, degree of distribution and dispersion during the recycling process seem to be the most important factor for the deformation and the mechanical properties of recycled materials. The experimental results obtained show that ESPI is very powerful technique to study the thermal mechanical property of polyolefin bumper system.

• The Korean Journal of Nuclear Medicine
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• v.36 no.1
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• pp.64-73
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• 2002

FDG-PET has potential as an effective, non-invasive tool to measure tumor response to anticancer therapy. The changes in tumor FDG uptake may provide an early, sensitive guide to the clinical and subclinical response of tumors to cancer treatment, as well as functional assessment of residual viable tumor. This may allow the evaluation of subclinical response to anticancer drugs in early clinical trials and improvements in patients management. However, monitoring tumor responses with FDG-PET is still in its infancy. The methods of measurement of FDG uptake are currently diverse and timing with respect to anti cancer therapy variable. Therefore, there is a need for larger-scale trials along with standardized methodology and a collection of reproducibility data. The recent guideline from the European group seems to be the most comprehensive. In future, the combination of morphological and metabolic images may improve the quantitative nature of these measurements by relating tumor viability to total tumor mass. More data on sensitivity and specificity of FDG-PET technique are needed along with continued advancement of PET methodology.

• Smart Structures and Systems
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• v.4 no.4
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• pp.439-448
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• 2008

Optical fiber sensors are by now broadly accepted as an innovative and reliable device for structural health monitoring, to be used either embedded into or bonded on structures. The accuracy of the strain measurement achievable by optical fiber sensors is critically dependent on the characteristics of the bonding of the various interface layers involved in the sensor bonding/embedding (structure material and gluing agent, fiber coating and gluing agent, fiber coating and fiber core). In fact, the signal of the bonded/embedded optical fiber sensor must correspond to the strain experienced by the monitored structure, but the quality of each involved interface can affect the strain transfer. This paper faces the characterization, carried on by both mechanical tests and morphological analysis, of the strain transfer function resulting with epoxidic and vinylester gluing agent on polyimide and acrylate coated optical fibers.

• BMB Reports
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• v.31 no.2
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• pp.156-160
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• 1998

In this study, we cultured bovine capillary endothelial cells from adrenal cortex and compared these cells with capillary endothelial cells obtained from bovine adrenal medulla on morphological and cytokinetic properties. We demonstrated that bFGF and gelatin matrix were required for the growth of adrenal cortex-derived capillary endothelial cells over middle passage, but not for the growth of adrenal medulla-derived capillary endothelial cells. Also, we showed that the growth of adrenal cortex-derived capillary endothelial cells must be stimulated by bFGF and the gelatin matrix for the measurement of in vitro angiostatin activity. These data indicate that adrenal cortex-derived capillary endothelial cells over middle passage are more suitable than adrenal medulla-derived capillary endothelial cells for in vitro angiogenesis assay.

• Proceedings of the Korean Vacuum Society Conference
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• 2012.02a
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• pp.483-483
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• 2012

Recently, nonthermal bioplasma has been attracted by researchers due to their potentials to modulate cellular functions resulting in changes of biomolecular electron band structures as well as cell morphologies. We have investigated the secondary electron emission characteristics from the surface of the erythrocyte, i.e., red blood cell (RBC) with and without the nonthermal bioplasma treatment in morphological and biomolecular aspects. The morphologies have been controlled by osmotic pressure and biomolecular structures were changed by well known reactive oxygen species. Ion-induced secondary electron emission coefficient have been measured by using gamma-focused ion beam (${\gamma}$-FIB) system, based on the quantum mechanical Auger neutralization theory. Our result suggests that the nonthermal bioplasma treatment on biological cells could result in change of the secondary electron emission coefficient characterizing the biomolecular valence band electron energy structures caused by the cell morphologies as well as its surface charge distributions.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10d
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• pp.517-519
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• 2002

본 논문은 자동 시각 굴절력 곡률계의 전자 부문에 연동될 곡률 측정 알고리즘을 소개한다. 만약 자동화된 시스템이 광학계로부터 나오는 영상을 이용하여 내부 처리를 거친 후 정확 시각 측정치를 검사자에게 알려줄 수 있다면 잘못 측정되는 측정 횟수를 크게 줄일 수 있을 것이다. 본 연구는 형태학적 필터링(morphological filtering)과 그레이-레벨의 신호 강조(signal enhance) 기술들을 이용하여 자동시각 굴절력 곡률계에 연동될 각막 곡률 측정 알고리즘을 개발하였다. 알고리즘에서는 광학계로부터 도출된 링 모양 광원의 화상을 처리하기 위해서 새로운 방법을 사용하는 대신에 굴절력 측정을 위해서 6개의 점으로 구성된 화상을 처리하는 방식으로 변형 적용시킨다. 이 때 링의 띠를 6개의 덩어리점으로 변형하는 과정만을 제외하면 굴절력 화상을 처리하는 방식과 같게 된다. 이는 알고리즘의 간결화와 측정 시간을 줄이는 효과를 얻게 된다. 그리하여 본 각막 곡률 측정 알고리즘은 정한 측정 값 도출이 어려운 시각 영상에 적용되어 효과적으로 오차를 줄임으로써 보다 효율적인 시각 측정을 가능하게 하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10b
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• pp.481-483
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• 2001

최근 전자제품의 초소형화에 따라, PCB 기판위의 부품의 집적도를 높이기 위해, 기존의 리드대신 부품 밑면에 볼(ball)이 격자형태로 배열되어 있는 BGA(Ball Grid Array) 형태의 팩키지가 많이 사용되고 있다. 하지만, BGA의 구조상 한번 장착되면 외관검사가 불가능하므로, 장착전 BGA의 검사가 필수적이다. BGA의 검사항목중 가장 중요한 항목인 볼 높이검사를 실시간으로 하기 위해서는 고속 비접촉 3차원 측정기술이 요구된다. 본 논문에서는 일반카메라보다 100배이상 높이 프로파일 취득속도가 빠른 3D smart camera와 레이저 슬릿광(slit ray)을 이용하여 고속으로 BGA 볼의 3D 프로파일을 얻은 후, clipping과 morphological filter를 사용하여 인접한 볼표면에서의 난반사로 인한 에러 데이터를 보정하여 정확한 3D 영상을 취득할 수 있는 시스템을 소개한다.

• Korean Journal of Human Ecology
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• v.7 no.2
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• pp.149-159
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• 1998

This study was carried out to examine the role soy milk in the preparation of Yukwa, possibility of substitution of soy milk to isolated soy protein and the effect of drying condition of Yukwa dough on the quality of Yukwa for the purpose of standardization of Yukwa preparation process. Although isolated soy protein did not make any particular effect on the gelatinization characteristics of waxy rice flour, soy milk lowered peak viscosity to half of waxy rice flour. The optimum moisture content of dried Yukwa dough was about 25%, and it can be reached by drying at $60^{\circ}C$ under atmosphere pressure for $4{\sim}5$ hours. On the basis of the results of morphological observations, mechanical and sensory measurement of hardness, and sensory test of the internal structure, mouthfeel and overall acceptability, soy milk was more desirable than isolated soy protein for the quality improvement of yukwa.