• 한국의류학회지
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• 제32권6호
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• pp.959-967
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• 2008

본 연구는 한국과 미국간 성인 여성의 3차원 인체치수에 대한 지수치의 비교를 통해 양국간성인 여성의 신체의 비례를 분석하고, 이 연구결과를 대미 수출입 업무를 수행하는 의류업체의 생산자료 및 양국여성의 체형 차이를 이해할 수 있는 기초 자료로 활용할 수 있도록 하는데 연구의 목적이 있다. 본 연구의 분석대상은 Size Korea사업에 의해 수집된 18세 이상의 한국인 성인 여성 1,988명과 SizeUSA사업에 의해 확보된 18세 이상미국성인 여성 6,306명의 3차원 측정자료이다. 본 연구에서는 총 35개의 지수치(키, 몸무게, 기타 비만 파악 지수치)를 활용해 양국 성인 여성의 신체 특징을 파악하고자 하였다. 첫째, 양국 여성의 3차원 측정치간의 분석결과, 샅앞뒤길이는 양국간 유의차가 검증되지 않았고, 어깨경사각을 제외한 전체 항목에서 미국 여성의 측정치가 한국 여성의 측정치에 비해 유의적으로 큰 것을 확인하였다. 둘째, 지수치를 통한 체형 특징 분석의 타당성을 검증하고자 한국과 미국 여성 측정치 각각에 대한 상관분석을 행하였으며, 이 결과에 의거해 양국 모두 키와 몸무게 항목이 다른 주요 측정치와의 상관이 고르게 높은 것을 확인할 수 있었으므로 이 두 항목을 활용한 지수치의 비교가 유효함을 알 수 있었다. 셋째, 키 지수치, 몸무게 지수치, 드롭치 및 비만을 판단할 수 있는 지수치를 활용해 양국 여성간 차이를 분석한 결과, 직접측정치를 통한 분석과는 달리 키 지수치에서는 키에 대한 다른 높이항목의 지수치는 미국인 여성이 유의적으로 작지만, 키에 대한 타 너비항목의 지수치는 한국인 여성이 유의적으로 큰 것을 확인할 수 있었다. 또한 몸무게 지수치 비교 결과, 모든 항목에서 한국 여성의 지수치가 유의적으로 큰 것을 알 수 있었으며, 반면 드롭치와 비만판정이 가능한 지수치의 비교에서는 모두 미국 여성의 지수치가 한국 여성보다 유의적으로 큰 것으로 나타나, 미국 여성이 한국 여성에 비해 체간부의 굴곡이 큰 체형이며 비만도도 높은 것을 알 수 있었다.

• 한국근적외분광분석학회:학술대회논문집
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• 한국근적외분광분석학회 2001년도 NIR-2001
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• pp.1510-1510
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• 2001

NIRS uses reflectance signals resulting from bending and stretching vibrations in chemical bonds between carbon, nitrogen, hydrogen, sulfur and oxygen. These reflectance signals are used to measure the concentration of major chemical composition and other descriptors of homogenized and freeze-dried whole broiler carcasses. Six strains of chicken were analyzed and the NIRS model predictions compared to reference data. The results of this comparison indicate that NIRS is a rapid tool for predicting dry matter (DM), fat, crude protein (CP) and ash content in the broiler carcass. Males and females of six commercial strain crosses of broiler chicken (Gallus domesticus) were used in this study (6$\times$2 factorial design). Each strain was grown to 16 weeks of age, and duplicate serial samples were taken for body composition analysis. Each whole carcass was pressure-cooked, homogenized, and a representative sample was freeze-dried. Body composition determined as follows: DM by oven dried method at 105$^{\circ}C$ for 3 hours, fat by Mojonnier diethyl ether extraction, CP by measuring nitrogen content using an auto-analyzer with Kjeldhal digest and ash by combustion in a muffle furnace for 24 hour at 55$0^{\circ}C$. These homogenized and freeze-dried carcass samples were then scanned with a Foss NIR Systems 6500 visible-NIR spectrophotometer (400-2500nm) (Foss NIR Systems, Silver Spring, MD., US) using Infra-Soft-International, ISI, WinISl software (ISI, Port Matilda, US). The NIRS spectra were analyzed using principal component (PC) analysis. This data was corrected for scatter using standard normal “Variate” and “Detrend” technique. The accuracy of the NIRS calibration equations developed using Partial Least Squares (PLS) for predicting major chemical composition and carcass descriptors- such as body mass (BM), bird dry matter and moisture content was tested using cross validation. Discrimination analysis was also used for sex and strain identification. According to Dr John Shenk, the creator of the ISI software, the calibration equations with the correlation coefficient, $R^2$, between reference data and NIRS predicted results of above 0.90 is excellent and between 0.70 to 0.89 is a good quantifying guideline. The excellent calibration equations for DM ($R^2$= 0.99), fat (0.98) and CP (0.92) and a good quantifying guideline equation for ash (0.80) were developed in this study. The results of cross validation statistics for carcass descriptors, body composition using reference methods, inter-correlation between carcass descriptors and NIRS calibration, and the results of discrimination analysis for sex and strain identification will also be presented in the poster. The NIRS predicted daily gain and calculated daily gain from this experiment, and true daily gain (using data from another experiment with closely related broiler chicken from each of the six strains) will also be discussed in the paper.

• 한국의류학회지
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• 제31권6호
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• pp.892-901
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• 2007

본 연구는 한미 성인여성복의 산업계에서 상호적용이 가능한 신체 치수 호환표의 작성에 필요한 기초연구로, 본 연구에 사용된 인체 치수는 모두 3차원 스캐너를 통해 수집된 것이다. 분석대상인 한국인의 인체 치수는 Size Korea사업에 의해 수집된 1,988명의 인체 치수 자료이고, 미국인의 인체 치수는 SizeUSA사업에 의해 확보된 6,306명의 성인여성 인체 치수 자료이다. 의류제작에 관련이 높다고 사료되는 34개 측정 항목이 분석에 사용되었으며, 연구결과는 다음과 같다. 첫째, 어깨경사각을 제외한 전체 측정항목에서 미국 여성이 한국 여성의 인체치수에 비해 그 값이 유의하게 큰 것으로 나타났다. 둘째, 연령집단간 각 측정항목의 평균치를 차이를 검증한 결과, 한국 여성의 경우 엉덩이둘레를 제외한 모든 측정항목에서 연령집단간 유의차가 검증되었으며, 미국 여성의 경우 팔 길이를 제외한 모든 측정 항목에서 연령집단간 유의차가 검증되었다. 셋째, 양국 여성의 연령집단간 차이를 비교 분석한 결과, 몇몇 측정치의 경우 연령집단에 따라 유의미한 차이를 보였으나, 대부분의 항목에서는 연령집단간 유의차를 나타내지 않았다. 넷째, 양국 성인여성의 동일 연령집단간 t-test결과, 샅앞뒤길이, 어깨경사각, 엉덩이둘레-젖가슴둘레, 엉덩이둘레-허리둘레를 제외한 모든 항목에서 미국 성인여성 측정치가 한국 성인여성 측정치보다 유의하게 큰 것으로 나타났다.

• The Journal of Advanced Prosthodontics
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• 제10권4호
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• pp.265-270
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• 2018

PURPOSE. The purpose of this in vitro study was to evaluate the accuracy of a new implant impression technique using bite impression coping and a dual arch tray. MATERIALS AND METHODS. Two implant fixtures were placed on maxillary left second premolar and first molar area in dentoform model. The model with two fixtures was used as the reference. The impression was divided into 2 groups, n=10 each. In group 1, heavy/light body silicone impression was made with pick up impression copings and open tray. In group 2, putty/light body silicone impression was made with bite impression copings and dual arch tray. The reference model and the master casts with implant scan bodies were scanned by a laboratory scanner. Surface tessellation language (STL) datasets from test groups was superimposed with STL dataset of reference model using inspection software. The three-dimensional deviation between the reference model and impression models was calculated and illustrated as a color-map. Data was analyzed by independent samples T-test of variance at ${\alpha}=.05$. RESULTS. The mean 3D implant deviations of pick up impression group (group 1) and dual arch impression group (group 2) were 0.029 mm and 0.034 mm, respectively. The difference in 3D deviations between groups 1 and 2 was not statistically significant (P=.075). CONCLUSION. Within limitations of this study, the accuracy of implant impression using a bite impression coping and dual arch tray is comparable to that of conventional pick-up impression.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2006년도 춘계학술대회 논문집
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• pp.183-184
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• 2006

Some researchers proposed positive effects of whole body vibration (WBV) on osteoporotic trabecular bones of animals. In the present study, the correlation between the improvement of morphological characteristics and the effect of WBV was investigated and analyzed in OVX rats. The rats were randomly assigned to 5 groups: control, sham, WBV 17Hz, WBV 30Hz and WBV 45Hz. The WBV groups were exercised on a vibration platform (magnitude : $1mm_{peak-peak}$, frequency : 17Hz, 30Hz and 45Hz, 30 minutes/day for 5 days/week). The 4th lumbar on rats was scanned by In-vivo Micro-CT at the week 0(just before WBV) and the week 8(after WBV). Structural parameters of the 4th lumbar, based on two dimensional (2D) scan image data, were investigated and analyzed. The quantitative decrement rate of trabecular bone on WBV groups with 30Hz and 45Hz were lower than control and sham groups. The results showed the positive effect of WBV on osteoporotic bones of OVX rats.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2006년도 춘계학술대회 논문집
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• pp.649-650
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• 2006

Some researchers proposed positive effects of whole body vibration (WBV) on osteoporotic trabecular bones of animals. In the present study, the correlation between the improvement of morphological characteristics and the effect of WBV was investigated and analyzed in OVX rats. The rats were randomly assigned to 5 groups: control, sham, WBV 17Hz, WBV 30Hz and WBV 45Hz. The WBV groups were exercised on a vibration platform (magnitude $1mm_{peak-peak}$, frequency : 17Hz, 30Hz and 45Hz, 30 minutes/day for 5 days/week). The 4th lumbar on rats was scanned by In-vivo Micro-CT at the week 0(iust before WBV) and the week 8(after WBV). Structural parameters of the 4th lumbar, based on two dimensional (2D) scan image data, were investigated and analyzed. The quantitative decrement rate of trabecular bone on WBV groups with 30Hz and 45Hz were lower than control and sham groups. The results showed the positive effect of WBV on osteoporotic bones of OVX rats.

• International Journal of Human Ecology
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• 제7권1호
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• pp.37-52
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• 2006

This study was designed to analyze the three-dimensional shapes of Hanbok Chima made with various fabrics and to clarify the relationship between fabric properties as well as the objective and subjective evaluations of the 3D shape. For 3D shape data, a dress form (9A2 (N; nude)) was scanned with eight Chima garments made with the same number of fabrics. The scanner used was a non-contact three-dimensional human body measuring system belonging to Bunka Women's University in Japan. Data concerning the objective evaluation of the 3D shape was obtained from the measurements of the vertical and horizontal sections: those for subjective evaluation were through the sensory test after exposure to photographs from a front and side view. Four fabric factors were extracted from fabric physical properties: softness, extension, thickness of threads, and weight of fabric. Such factors as expansion (volume), sag of rear train, shape of nodes were influential in explaining the 3D shape of Hanbok Chima. From the analysis of the 3D shape, it can be deduced that with the constituent fabric stiffer, lighter, and less stretchable, the more expanded the 3D shape appeared to be. Multiple regression results showed that vertical shape factors have a greater effect on the evaluation of the 3D shape. It also implies that dependent variables of this study such as the subjective evaluation and 3D shape can be derived from regression equations on independent variables as fabric property factors or 3D shape factors. These results can enable the manufacturers to predict the 3D shape of the garment as well as the human subjective assessment to improve the efficacy of production. The investigation method proposed in this study can also be applicable to other garment items.

• 한국산학기술학회논문지
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• 제13권11호
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• pp.5299-5304
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• 2012

인체는 공기, 지방, 근육, 뼈, 혈관과 같이 서로 다른 조직으로 구성되어 있어 각 조직간 자화율 차이로 인해 자장의 불균일이 항상 발생하여 신호가 감소한다. 이에 본 연구에서는 서로 다른 조직으로 구성된 인체의 신호감소를 해결하기 위하여 인체의 조직밀도와 유사한 실리콘을 이용하여 공기와 맞닿은 굴곡진 부분에 보상함으로써 자기공명영상의 신호를 높이고자 하였다. 특별한 증상이 없는 성인 8명으로 대상으로 하였으며, 인체 중 굴곡이 많고 구조가 복잡해 신호감소가 많이 발생하는 발을 설정하였다. 영상은 종족궁의 가운데부터 5개의 말절골을 포함하여 얻었으며, 중족골 및 족지골을 연장한 선에 평행하게 30절편을 얻었다. 측정은 실리콘의 적용 전 후 뼈와 연부조직의 SNR을 비교하였으며, 대응표본 T검정을 이용하여 통계분석 하였다. 연구결과 뼈와 연부조직의 T1, T2 강조영상 모두 실리콘 적용 후가 적용 전에 비해 SNR이 월등히 높게 나왔으며 유의한 양의 상관관계로 증가하였다. 결론적으로 본 연구는 체적소에 영향을 주지 않으면서 코일내 인체의 부피를 늘린 획기적인 개선 방법으로, 본질적 문제인 체적소의 부피나 균일성 저하를 해결하여 SNR을 높일 수 있었다.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2007년도 춘계학술대회 논문집
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• pp.160-164
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• 2007

In the steel industry, there is a need to produce large forged parts for the automobile industries, the flight and shipping industries ad military industries. In the steel-industry application, a cogging technique for cast ingots is required, because the major parts are needed as one large body in order to obtain higher quality. Therefore, cogging process is the primary step in manufacturing of practically large open-die forging. In the cogging process, internal voids have to be eliminated as defects, The present work is concerned with the elimination of the internal voids in large ingots so as obtain sound products. In this study, hot compression tests were carried out to obtain the flow stress of cast microstructure at different temperature and strain rates. The FEM analysis are performed to investigate the overlap defect of cast ingots during cogging stage. The measure flow stress data were used to simulate the cogging process of cast ingot using the practical material properties. Also the analysis of void closure are performed by using the $DEFORM^{TM}$-3D. The calculated results of void closure behavior are compared with the measured results before and after cogging, which are scanned by the X-ray scanner. From this result, the criteria for deformation amounts effect on the void closure can be investigated by the comparison of practical experiment and numerical analysis.

• 한국임상수의학회지
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• 제24권4호
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• pp.568-572
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• 2007

This study was carried out to show at the fractal analysis complements the practical disadvantage of gray level histogram which is designed to measure the quantitative classification of echo patterns in ultrasonographic image of parenchymal organs such as spleen and kidney and it is a practical method of measurement for quantitative classification. By using ultrasonographs, kidney and spleen of 21 healthy Beagles were fixed under different gain settings to be scanned for echo patterns and results were analyzed with body gray level histogram and fractal analysis. Then it was compared based on the statistical data obtained. Although there was a proportionate increase in histogram along with gain settings, there were consistencies in the fractal dimension. In terms of quantitative analysis in ultrasonographic images, fractal analysis is concluded to complement the practical disadvantage of gray level histogram.