• Journal of Welding and Joining
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• 제22권6호
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• pp.43-49
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• 2004

In this study, a visual sensor system which can detect I-butt weld joint with height variation and includes a seam tracking algorithm was investigated. Three-dimensional position of an object can be acquired by using the method of distance measurement, i.e., an optical trigonometry which results from the spatial relations between the camera, the object and the structured light by a visible laser. Effects of laser intensity and iris number for the image quality as well as object material were investigated for the optical system design. For the image processing, a region of interest is defined from the whole image and a line image of laser is drew by using the gray level difference in the image. From the drew laser line, the weld joint can be recognized in searching the biggest point position calculated from the central difference method. Through a series of welding experiments, a good tracking performance was confirmed under GMA welding.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 추계 학술논문 발표대회
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• pp.184-185
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• 2014

The purpose of this study is to experimentally evaluate the variation characteristics of stiffness and impact resistance under the construction height of gypsum board wall at the actual construction site. The method suggested in previous study was applied on the test method of horizontal load resistance and impact resistance. As a result of horizontal load resistance test, when the wall height is 2,400 mm, the maximum displacement is 13.6 mm and residual deformation is 0.5 mm, and when the wall height is 3,000 mm, the maximum displacement is 31.3 mm and the residual displacement is 6.8 mm. As a result of impact resistance test, the residual deformation of each specimen at 20 cm of fall height were 1.02 mm and 0.08 mm, respectively, the residual deformation at 40 cm of fall height were 1.58 mm and 0.35 mm, respectively, and the residual deformation at 60 cm of fall height were 2.23 mm and 2.48 mm, respectively.

• 한국의류학회지
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• 제12권2호
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• pp.237-248
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• 1988

To access the appropriate height of sleeve cap which is required for the basic sleeve pattern according to arm movements, plaster gypsum experiment was performed. Arm movements were 5types ($0^{\circ},\;45^{\circ},\;90^{\circ},\;135^{\circ},\;180^{\circ}$) to the vertical directions in the front. The appropriateness of the pattern was analyzed by measuring clothing pressure. The results obtained were as follows: 1. Increasing the movement angle, sleeve width increased but height of sleeve cap and armhole girth decreased. 2. Increasing the movement angle, the acromion moved to the front part of bodice. 3. On the basis of the result of the height of sleeve cap, the $\frac{AH}{4} +2.5cm$ sleeve basic 4 pattern is suitable for the direction $M_1(0^{\circ}),\;M_2(45^{\circ})$, and the $\frac{AH}{5}$sleeve basic pattern is suitable for the direction $M_3(90^{\circ}),\;M_4(135^{\circ})$, and $M_5(180^{\circ})$. 4. As the movement angle and height of sleevecap increased, the part which receive high pressure increased and the difference between the hightest and the lowest clothing pressure increased. 5. By the variation of movement angle and height of sleevecap, clothing pressure of upperarm was affected more than that of shoulder blade. 6. The clothing pressure of upperarm and shoulder blades were more affected by the height of sleeve cap than the ease of breast area. 7. Considering the clothing pressure of various arm movement, the most appropriate height of sleeve cap for $M_1(0^{\circ}),\;M_2(45^{\circ})$ positions was to use the $\frac{AH}{4}$+2.5cm, and for $M_3(90^{\circ}),\;M_4(135^{\circ})$, and $M_5(180^{\circ})$, was $\frac{AH}{5}$.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.438-440
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• 2003

This study is introducing a new approach of ATInSAR hologram for modeling wave refraction spectra pattern. TOPSAR data with L$_{-HH}$ and C-vv bands utilized spatial variation of wave refraction. Based on the phase information in along track interferometry, and ATInSAR hologram the quantitative information such swell wave height and spectra energy have been modeled. The phase information in ATInSAR hologram images can be transferred to wave refraction The ATInSAR hologram can be used to investigate the wave refraction pattern along the coastal waters. The fringe information pattern was shown to be useful in modeling wave refaction spectra varaition. The hologram interferometry wave refraction model consists of two sub-models. The purpose of first sub-model is to determine the swell wave height by using ATInSAR. Second sub-model aims to generate the holographic interferometry from the information of two wave spectra which detected by ATInSAR technique. The azimuth cut-off variations along the fringe patterns will be estimated. As azimuth cut-off contains the wave height information which could be used the significant wave height variation in convergence and divergence zone.

• 대한화장품학회지
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• 제16권1호
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• pp.18-29
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• 1990

In this report, the variation of skin surface between before treatment and after treatment was investigated by skin image analyzer. The 30 volunteers were applied cream and lotion on the forearm Inside for 4 weeks, and the measurement parameter of skirl surface was adopted peak, length, height, and width. The results were as follows ; 1. variation trends of parameters was showed that number of peaks were increased, but length, height and width were decreased. 2. The order of improvement for skin surface are as follow ; height > length > peak > width. 3. And also disclosed that the number of peak has a correlation with width, and length has a correlation with height.

• 한국의류산업학회지
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• 제6권5호
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• pp.655-659
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• 2004

The purpose of this study is to investigate the somatotype variation & satisfaction with the fit of ready-to-wear for American women. For this study, questionnaires were administered to 192 American women in Louisiana State areas. Employing a sample of 127 data were analyzed by using F-test. The results were as follows: In the satisfaction with the somatotype variation of American women, height items were increased and width items were decreased with aging. At neck, bust, waist, hip and sleeve circumferences, in the satisfaction with the fit of ready-to-wear, were decreased with aging, Correlation for somatotype variation & satisfaction with the fit of ready-to-wear was significantly positive. With aging, the satisfaction with the somatotype & fit of American women's ready-to-wear for sizing system was generally decreased.

• 대한기계학회논문집B
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• 제32권12호
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• pp.970-976
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• 2008

Characteristics of methane turbulent non-premixed flame have been studied experimentally in coflow jets with initial temperature variation. The results showed that the premixed flame model and the large-scale mixing model for turbulent flame stabilization were effective for methane fuel considered initial temperature variation. Especially, the premixed flame model has been improved by considering nitrogen dilution for the liftoff height of turbulent lifted flame. In estimating blowout velocity and the liftoff height at blowout with the premixed flame model and the large-scale mixing model, the two turbulent models were excellently correlated by considering the effect of physical properties and buoyancy for the initial temperature variation.

• 한국작물학회지
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• 제43권4호
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• pp.250-253
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• 1998

Somaclonal variation was observed in the field on doubled haploid plants derived from single pollen of a rice cultivar "Hwaseongbyeo". The variations of seven quantitative traits including plant height and one qualitative trait (pubescence) in 436 lines ($R_2$ generation) were analyzed. The number of lines which fell beyond the boundaries of the 95% confidence intervals of the check variety, Hwaseongbyeo was checked for each quantitative trait, and of those fertility showed the highest variation frequency (85.6%), followed by plant height (77.5%), flag leaf length (66.5%), grains per panicle (42.2%), days to heading (34.5%), panicle length (30.7%) and panicles per hill (22.7%). And the variations of quantitative traits except days to flowering appeared to move in the negative direction compared to "Hwaseongbyeo". Variability within lines was also observed for quantitative and qualitative traits. Twenty-nine $R_2$ lines (7%) segregated for pubescence and 130 $R_2$ lines (30%) showed variation with regard to fertility. This suggests that mutations usually occur before diploidization. Twenty-nine $R_2$ lines representing a wide spectrum of variation were chosen for RAPD analysis. The number of lines showing DNA polymorphism compared to Hwaseongbyeo ranged 0 from to 10 according to the primer used and this seems to indicate that specific loci have highly mutable genomic site.utable genomic site.

• 한국산림과학회지
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• 제77권2호
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• pp.235-241
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• 1988

경남(慶南) 산청군(山淸郡) 시천면(矢川面) 소재(所在) 지리산(智異山) 일대(一帶)에서 재배(栽培)되고 있는 왕대 임분(林分)에 대(對)하여 해발고(海拔高)에 따른 간형질(桿形質) 변이(變異)를 분석(分析) 한 바 그 결과(結果)를 요약(要約)하면 다음과 같다. 해발고(海拔高) 400m의 평균기온(平均氣溫)은 약(約)$12^{\circ}C$로서 수평적(水平的)인 왕대 분포지역(分布地域)의 기온(氣温)과 일치(一致)하였다. 해발고별(海拔高別) 간고(稈高), 직경(直徑), 지하고(枝下高) 등(等)에 있어서 평균치(平均値) 출현율(出現率)의 범위(範囲)는 400m까지는 넓었으나 500m이상(以上)에서는 매우 좁게 나타났다. 지하고(枝下高)에 대(對)한 간고(稈高)의 형상비(形狀比)에 있어서 출현율(出現率)의 범위(範囲)는 해발고(海拔高) 모두 동일(同一)한 경향(傾向)이었다. 변이계수(變異係數)에 있어서 간고(稈高), 직경(直徑), 지하고(枝下高)/간고(稈高)의 형상비(形狀比)는 15~25%의 범위(範囲)를 나타내었으나 지하고(枝下高)에 있어서는 25%이상(以上)의 큰 폭(幅)을 나타내었다. 해발고(海拔高)에 따른 간형질(稈形質)은 모두 1% 수준(水準)에서 유의성(有意性)이 인정(認定)되었다. 간형질(稈形質)에 대(對)한 Duncan의 다중검정(多重檢定)을 한 결과(結果), 해발고(海拔高) 400m이하(以下)와 500m이상(以上)으로 구분(區分)되었다. 해발고(海拔高)에 따른 간형질(稈形質) 상호간(相互間)에는 대부분(大部分) 정(正)의 상관(相關)을 보였다. 이상(以上)의 결과(結果)에서 지리산(智異山) 일대(一帶)에 있어서 간형질(稈形質) 특성(特性)으로 보아 해발고(海拔高) 400m이하(以下)의 지역(地域)이 왕대 재배(栽培)에 적합(適合)한 지역(地域)으로 사료(思料)된다.

• 수산해양기술연구
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• 제35권1호
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• pp.83-92
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• 1999

In this paper, the wind tunnel test was carried to investigate the behavior of buffer layer in turbulent boundary layer with variation of surface temperature and roughness. The results were as follows; 1. The velocity in turbulent boundary layer was increased when the roughness height within viscous sublayer thickness was increased. 2. When the surface temperature was increased, the density of air was decreased and the velocity in turbulent boundary layer was increased. Thus, the thickness of turbulent boundary layer was decreased. 3. When the roughness height and surface temperature was increased simultaneously, the thickness of turbulent boundary layer was decreased. 4. The decrement of the thickness of turbulent boundary layer was more effected by the increment of the roughness height rather than the increment of surface temperature. 5. In this study, it was found that the condition of the highest velocity n turbulent boundary layer was the temperature 333K and roughness #100.