• Journal of the Optical Society of Korea
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• v.19 no.5
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• pp.537-543
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• 2015

Liquid crystal displays (LCDs) have slow responses, so motion blurs are often perceived in fast moving scenes. To reduce this motion blur, we propose a novel method of robust motion compensated frame interpolation (MCFI) based on bidirectional motion estimation (BME) and weight-overlapped block motion compensation (WOBMC) with variable block sizes. In most MCFI methods, a static block size is used, so some block artefacts and motion blurs are observed. However, the proposed method adjusts motion block sizes and search ranges by comparing matching scores, so the precise motion vectors can be estimated in accordance with motions. In the MCFI, overlapping ranges for WOBMC are also determined by adjusted block sizes, so the accurate MCFI can be performed. In the experimental results, the proposed method strongly reduced motion blurs arisen from large motions, and yielded interpolated images with high visual performance and peak signal-to-noise ratio (PSNR).

• Journal of the Korean Applied Science and Technology
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• v.25 no.1
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• pp.107-114
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• 2008

In this article a reliable and rapid method based on specific turbidimetry is proposed for the determination of sizes of nanoparticles. Conventionally in specific turbidimetry specific turbidities for a colloidal dispersion are measured as a function of light wavelength, and compared to theoretical values calculated from Mie scattering theory for presumed particle sizes. In contrast specific turbidity at a fixed wavelength is measured in the proposed method, and particle sizes are determined from the prepared calibration curve. The calibration curve is a plot of specific turbidity vs particle size and in this case the specific turbidities are measured for a couple of samples of known sizes.

• Genomics & Informatics
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• v.12 no.4
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• pp.208-215
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• 2014

Recently, new methods have been developed for estimating the current and recent changes in effective population sizes. Based on the methods, the effective population sizes of Korean populations were estimated using data from the Korean Association Resource (KARE) project. The overall changes in the population sizes of the total populations were similar to CHB (Han Chinese in Beijing, China) and JPT (Japanese in Tokyo, Japan) of the HapMap project. There were no differences in past changes in population sizes with a comparison between an urban area and a rural area. Age-dependent current and recent effective population sizes represent the modern history of Korean populations, including the effects of World War II, the Korean War, and urbanization. The oldest age group showed that the population growth of Koreans had already been substantial at least since the end of the 19th century.

• Journal of Fashion Business
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• v.8 no.1
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• pp.133-140
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• 2004

In order to compare the pattern sizes of toddlers' brands, the apparel size #95 and #100, #110 were surveyed, while upper body lengths, bust circumferences and waists, hip circumferences, shoulder length, sleeve length, neck circumferences of toddlers' underwears were examined. As a result, it was found that upper body lengths, chest circumferences and lower body lengths of toddlers' underwears differed more or by $2.0cm{\sim}3.0cm$ among brands than other sizes. In case of underwear size #95, the average upper body length was 32.8cm; the upper body size of "c" brand was longest or 33.5cm, while that of "e" brand was shortest or 32.0cm. In case of size #80, the average upper body length was 36.0cm; the upper body size of "a" brand was longest or 37.0cm, while that of "e" brand was shortest of 35.0cm. Such findings may be attributable to the fact that the main customers of "a" and "b" brands whose pattern sizes are larger are middle or lower class people who tend to buy larger toddlers' apparels than their children's actual body sizes. In contrast, "e" brand seems to target the upper class who prefers the apparels almost fitting their children's actual body sizes.

• Food Science and Biotechnology
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• v.16 no.5
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• pp.759-764
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• 2007

To investigate the effect of soaking and particle sizes on the properties of rice flour and gluten-free rice bread, wet-milled (WRF, dried at $20^{\circ}C$) and dry-milled rice flours (DRF) were passed through sieves (45 or 100 mesh). Soaking of the rice grains affected the particle size distribution of flour passed through the same size screen. The L and b values of WRF were higher than those of DRF and were not changed with decreasing particle sizes, but DRF increased L and decreased b values. The initial pasting temperatures and setback viscosities of both flours decreased with decreasing particle sizes. The swelling powers at $100^{\circ}C$ increased with decreasing particle sizes in DRF, but maintained in WRF. Starch granules were observed on the surface of flour particles in WRF. The apparent viscosity of WRF paste exhibited 3-5 times higher than that of DRF. Thus, wet milled rice flour with smaller particle sizes (${\phi}<150\;{\mu}m$) showed better properties for making gluten-free rice bread.

• Fashion & Textile Research Journal
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• v.11 no.3
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• pp.445-452
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• 2009

This study aims to improve the fit of high school girls' uniforms. This study researched on the fit of the recent high school girls' uniforms and developed a sizing system that adequately reflects their body figures. The results are as follows. First, the research showed that over 50% of the highschool girls wore their blouses too tight, whereas over 60% of the girls wore skirts that were appropriately fitted. Second, to classify the high school girls' figures, factor analysis and cluster analysis were conducted. 5 factors were extracted for upper body and 3 factors for the lower body. The girls were then divided into 3 groups for the upper body and 4 groups for the lower body. Third, KS size intervals were used for frequency distribution of height and bust for the bodice, height and waist for the lower body. Sizing system of the uniform company and the frequency distribution of sizes were compared. As a result, sizing system of the uniform company and the frequency distribution slightly overlapped. Fourth, sizing system considering body type distribution and high frequency distribution section of sizes was suggested. As a result, for the upper body, when 6 sizes were suggested, 43.9% of the population was covered and when 11 sizes were suggested, 58.3% was covered. For the lower body, when 6 sizes were suggested, 32.2% was covered, and when 11 sizes were suggested 58.9% of the population was covered.

• Fashion & Textile Research Journal
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• v.18 no.5
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• pp.647-657
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• 2016

This study investigated domestic and foreign cycle wear sizing systems for the domestic market and provided basic data for development of a high functional cycle wear with excellent fitness qualities. Each brand was found to have different dimension items and different sizes as well as size deviation and range according to each item. Therefore, a size selected by referring to the dimension items would be expected to have confusion when selecting a size. Domestic brands are able to selects sizes relatively easily because they suggest sizes mainly by height and weight (which are a universal size). However, the development of a sizing system for domestic cycle wear brands is needed because each brand have different sizes according to its dimension items. Foreign brands are also different from domestic brands in size marking items and sizes according to items. Therefore, the establishment of a sizing system standard for foreign brands is necessary because there could be a problem with fitness in the same sizes selected for domestic brands. Cycle wear is also able to cover various body types due to the elasticity of its material; however, and evaluation of fitness and a follow-up study will be necessary to develop cycle wear with a fitness that is proper for a Korean body type.

• Journal of Fashion Business
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• v.7 no.5
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• pp.101-107
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• 2003

In order to compare the sizes of infants;brands, the apparel size #70 and #80, #90 were surveyed, while upper body lengths, bust circumferences and waists, hip circumferences, shoulder length, sleeve length, neck circumferences of infants' underwears were examined. As a result, it was found that upper body lengths, chest circumferences and lower body lengths of infants' underwears differed more or by $2.0{\sim}3.0cm$ among brands than other sizes. In case of underwear size #70, the average upper body length was 32.8cm; the upper body size of "c" brand was longest or 33.5cm, while that of "e" brand was shortest or 32.0cm. In case of size #80, the average upper body length was 36.0cm; the upper body size of "a" brand was longest or 37.0cm, while that of "e" brand was shortest of 35.0cm. Such findings may be attributable to the fact that the main customers of "a" and "b" brands whose pattern sizes are larger are middle or lower class people who tend to buy larger infants' apparels than their children's actual body sizes. In contrast, "e" brand seems to target the upper class who prefers the apparels almost fitting their children's actual body sizes.

• Journal of the Korean Society of Clothing and Textiles
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• v.45 no.1
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• pp.123-135
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• 2021

This study provides basic information for the convenient size selection of T-shirts in an online purchasing environment. The best preferred T-shirts fit was selected among five sizes of T-shirts according to body size group. The subjects were 103 students majoring in clothing. After setting a virtual model with her own body sizes, the subjects chose the best preferred fit among five sizes of T-shirts that included the one suitable to their bust circumference, two smaller T-shirts and two larger T-shirts. As a result, they preferred the fit of larger size T-shirts than body size, but they preferred a different fit by the body characteristic group such as waist height group and hip circumference group. T-shirt length was affected by waist height; in addition, shoulder ease was affected by hip circumference and bust circumference. Therefore waist height and hip circumference should be considerable sizes when consumers choose T-shirts sizes with a preferred fit.

• Journal of Fashion Business
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• v.5 no.2
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• pp.129-147
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• 2001

The purpose of this study is to survey and analyze domestic fashion education institution's program on apparel prototype and thereupon, address the problems and find their solutions, and thereby, provide for some basic data useful to improve the basic patterns of apparel and ultimately, help reinforce the professional and practical apparel design education. The results of this study can be summarized as follows; 1. 85.1% of the subjects finished graduate or higher courses. Almost all of the college and junior college teachers finished graduate or higher courses, while only 31.6% of those teaching at technical institutes finished graduate or higher courses. Such a finding suggests that colleges tend to employ their faculty members based on their academic background but that technical institutes value the practical ability of their faculty more. 2. As a result of surveying the types of basic patterns used by teachers, it was found that 72.3% of them were using two or more patterns. The basic pattern preferred most by our teachers was Japanese culture institute's type (71.3%), followed by the US FIT type (24.5%), Lim Won-Ja's type (22.3%), French ESMOD type (17.0%). 96.3% of our apparel design students were making their basic patterns as instructed by their teachers. 3. 67.0% of our students were using their conceived sizes for production of their basic patterns, 14.9% were referring to the ready-made sizes, 8.5% were relying on their teachers' individual experiences, and 9.6% were using their own cord sizes. In order to survey the difference between teachers' sizes (ready-made sizes or individual experienced ones) and business sizes used, the basic body measurements used for ready-made apparels were surveyed to be compared with the national standard body sizes set in 1997 for women aged between 18 and 24. As a result, it was found that the ready-made sizes used for apparel production prototypes than teachers' ones were nearer the national standard sizes. Such a finding suggests that it may well be necessary for teachers to be more connected with the apparel businesses and thereby, teach their students in a more realistic way with correct information. 4. 83.0% of the subject teachers were tacking their basic patterns to be well fitting, and 76.9% of these teachers were tacking the patterns in reference with students' individual body sizes. In all, 97.4% of the subject teachers were guiding the tacking process, which suggests that the flat patternmaking is taught primarily for customized apparels. As a result of comparing the fitness of basic patterns with those of each body part, it was found that teachers were most dissatisfied with the fitness of shoulders and arm hole depth. Therefore, it will be necessary to reclassify the body types or find other drawing techniques to improve the fitness of such body parts. Nevertheless, teachers were willing much (4.18) to develop their own educational basic patterns for themselves. Lastly, it is hoped that this study will be followed up by future studies on educational prototypes covering diverse body shapes and those on practical implementations of those prototypes for students.