• The Research Journal of the Costume Culture
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• v.15 no.4
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• pp.661-676
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• 2007

The purpose of this study was to investigate the periodical change of Korean children's clothing from 1960 to 2000. As valuable historical data, 794 children's clothing in wedding pictures in these periods were collected for this study. Research method was content analysis and frequency, cross table analysis, and ${\chi}^2$ test were conducted for data analysis. The results of this study were as follows. The children's clothing in 1960s had very humdrum and limited design and plain pattern. And most of children in this period wore Western clothes of casual style. In 1970s, children's clothing was enriched in terms of design, pattern, color and ornament. However, clothing design for children was not developed yet, so form of children's clothing in this period was showed as duplication of adult clothing design. In 1980s, The children's clothing was developed with enhancement of the level of living. Various style and sophisticated design were appeared and design and size system for children were developed. With increasement of social interest of leisure and sports, casual style was especially popular in this period for both of children and adult in this period. In 1990, rapid decrease of birth rate resulted in parents' excessive interest and investment for their children. In this effects, children's clothing in 1990s had luxury, various, and individual characteristics.

• Journal of the Korean Dietetic Association
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• v.17 no.1
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• pp.47-57
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• 2011

The purpose of this research was to investigate consumption and satisfaction of Takju (Makgeolli) among consumers ages 20 to 29 living in Seoul and Gyeonggi province. It was found that 86.2% of the respondents drank Takju once or twice a month, and the high satisfaction group drank Takju with a frequency of 8 times a month (P<0.01). Respondents selected market (44.4%) and restaurants (34.9%) as the most common place of purchase, whereas pub (42.2%) and Takju bar (32.8%) were the drinking places selected. Regarding the preferred ingredients, respondents liked pear the most followed by Lycium chinense, corn, pine nuts, ginseng, and citrus fruit. The most compatible foods with Takju were identified as Buchimgae (Jeon) (97.4%), Kimchi (45.6%), Bokkeum (36.4%), Namul & Muchim (25.0%), and Jjim (21.5%). Pajeon was mentioned as the most compatible food with Takju, followed by Bulgogi, Gamjatang, Agwijjim, Dubukimchibokkeum, and Ojingeotwigim. Regarding consumers' satisfaction of Takju, taste was the most highly valued, with color, price, alcohol content, function, flavor, diversity of raw materials, and accuracy of label also highly considered. Further, to formulate a plan to encourage consumption of Takju, the high satisfaction group decided that promotion of local festivals and events related to Takju, standardization of quality, creation of brands, expansion of distribution network, and organization of relevant departments are the most important compared to other items (P<0.05).

• Journal of electromagnetic engineering and science
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• v.6 no.1
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• pp.47-52
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• 2006

The objective of this study is to evaluate the effects of size and permittivity on the specific absorption rate(SAR) values of rat brains during microwave exposure at mobile phone frequency bands. A finite difference time domain (FDTD) technique with perfect matching layer(PML) absorbing boundaries is used for this evaluation process. A color coded digital image of the Sprague Dawley(SD) rat based on magnetic resonance imaging(MRI) is used in FDTD calculation with appropriate permittivity values corresponding to different tissues for 3, 4, 7, and 10 week old rats. This study is comprised of three major parts. First, the rat model structure is scaled uniformly, i.e., the rat size is increased without change in permittivity. The simulated SAR values are compared with other experimental and numerical results. Second, the effect of permittivity on SAR values is examined by simulating the microwave exposure on rat brains with various permittivity values for a fixed rat size. Finally, the SAR distributions in depth, and the brain-averaged SAR and brain 1 voxel peak SAR values are computed during the microwave exposure on a rat model structure when both size and permittivity have varied corresponding to different ages ranging from 3 to 10 weeks. At 900 MHz, the simulation results show that the brain-averaged SAR values decreased by about 54 % for size variation from the 3 week to the 10 week-old rat model, while the SAR values decreased only by about 16 % for permittivity variation. It is found that the brain averaged SAR values decreased by about 63 % when the variations in size and permittivity are taken together. At 1,800 MHz, the brain-averaged SAR value is decreased by 200 % for size variation, 9.7 % for permittivity variation, and 207 % for both size and permittivity variations.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37C no.10
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• pp.870-887
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• 2012

This paper qualitatively analyzes the stereo 3D content factors causing viewer's discomfort. For this, we perform a subjective test that each subject strokes a specific key whenever he or she feels discomfort during watching stereo 3D contents. Also we extract the quantitative values of the factors in the 3D contents to obtain the temporal changes of the factors. Those two sets of data are used to analyze the contents to find the content factors which cause viewer's discomfort. The factors to be considered are the amount and the frequency of the disparity change, story of the contents, situation or environments of a scene, movement and position of the image or camera, color and luminance information as well as disparities themselves. Most researches have dealt with each factor causing viewer's discomfort but this paper focuses on the composite factors rather than each of them. That is, this paper deals with the various strong and weak factors and their composites causing viewer's discomfort in addition to the big disparities which have been mostly so far.

• Development and Reproduction
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• v.22 no.1
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• pp.111-117
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• 2018

The objective of this study was to determine the mitotic intervals (${\tau}_0$) of two consecutive cell divisions and synchronous embryonic cleavage in grass puffer, Takifugu niphobles at different water temperatures (18, 20, 22, and $24^{\circ}C$). The color of the fertilized egg was light yellowish. The egg type was demersal and unadhesive. Egg weight was $0.09{\pm}0.002mg$. The sizes of unfertilized eggs were smaller than fertilized eggs in major axis and minor axis at $20^{\circ}C$ (p<0.05). The size of the fertilized egg of $18^{\circ}C$ water temperature group at the blastodisc stage was the smallest (p<0.05), but no significant differences were observed in the other water temperatures group except $18^{\circ}C$ water temperature group (p>0.05). The first cleavage stages at 18, 20, 22, and $24^{\circ}C$ were at 75, 90, 105, and 120 mins, respectively. As water temperature was increased, embryonic development and formation time of the first cleavage furrow were accelerated. There were negative correlation between ${\tau}_0$ and water temperature for grass puffer (Y=-1.225X+70.05, $R^2=0.988$, n=10, where Y was ${\tau}_0$ and X was temperature). This study confirmed that successful hatching of grass puffer was related to water temperature. Chromosome manipulation will be helpful for this species using cleavage frequency and ${\tau}_0$.

• Korean Institute of Interior Design Journal
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• v.18 no.1
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• pp.35-42
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• 2009

In this study, the author aims to examine that the image for specific space coming through vision is to reveal how people perceive the space through vision and whether the perceived space includes the role as the catalyst that causes the following activities. It is believed that the fact which elements are remembered as the whole expression as well as the memorized images that humans have regarding the space should act as the important factor in terms of space perception. The conclusions from this study are as follow; 1) By analyzing the frequency of observation time that were obtained from the examinee, it was possible to classify the property of observation with S areas. Besides, it was possible to the meanings that the design elements have in each area. The establishment of the areas are considered as the important factor to examine which design elements have drawn the attention. 2) In case of I area which showed the most design factors that would lead examinee's vision or have interests in the examinee views, it showed that it stared the lower parts from the middle of the Image spatially, which was the most stable position from the image with strong tendency for staring at this area. 3) The most frequently stared area was the lower part of the middle, however, while the I area gazed the right side of the middle, II area faced the left side more so that it was revealed that it stared at the lower part of the middle and right side, then, moved to left. 4) Despite the frequent observation, some areas had very low or few observation data records and the area which was designed with monotonous color with relatively large size was also involved here so that it was identified that the simply treated area in design was rarely gazed.

• Proceedings of the Korean Vacuum Society Conference
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• 2010.02a
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• pp.453-453
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• 2010

In this study, zinc germanate ($Zn_2GeO_4$) thin films has been synthesized by using radio frequency magnetron sputtering and the divalent manganese-activated luminescence was characterized. X-ray diffraction patterns of the as-deposited $Zn_2GeO_4$:Mn films showed only a broad feature, indicative of an amorphous structure. Scanning electron microscopy images revealed that the as-deposited $Zn_2GeO_4$:Mn has a smooth surface morphology. The $Zn_2GeO_4$:Mn films were found to be crystallized by annealing in air ambient at temperatures as low as $700^{\circ}C$. The annealed $Zn_2GeO_4$:Mn possessed a rhombohedral polycrystalline structure. The broad-band photoluminescent emission spectrum from 470 to 650nm was obtained at room temperature from the $Zn_2GeO_4$:Mn films. The emission peak was centered at around 535nm in the green range, which originates from the intrashell transition of manganese $3d^5$ electrons from $^4T_1$ excited-state level to the $^6A_1$ ground state. The PL emission spectrum had an asymmetric line shape, which results from the $^3d_5$ electron transitions of divalent manganese ions located at different sites of the zinc germanate host crystal lattice. Electroluminescent devices were fabricated using $Zn_2GeO_4$:Mn as an emission layer. The fabricated devices showed a green EL emission similar to the PL emission. The CIE chromaticity color coordinates of the EL emission were determined to be x=0.308 and y=0.657.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.30 no.5 s.248
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• pp.413-421
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• 2006

The bubble dynamics induced by direct laser heating is experimentally analyzed as a first step to assess the technical feasibility of laser-based ink-jet technology. To understand the interaction between laser light and ink, the absorption spectrum is measured for various ink colors and concentrations. The hydrodynamics of laser-generated bubbles is examined by the laser-flash photography. When an Ar ion laser pulse (wavelength 488 nm) with an output power up to 600 mW is incident on the ink solution through a transparent window, a hemispherical bubble with a diameter up to ${\sim}100{\mu}m$ can be formed with a lifetime in a few tens of microsecond depending on the laser power and the focal-spot size. Parametric study has been performed to reveal the effect of laser pulse width, output power, ink concentration, and color on the bubble dynamics. The results show that the bubble generated by a laser pulse is largely similar to that produced by a thin-film heater. Consequently, the present work demonstrates the feasibility of developing a laser-actuated droplet generation mechanism for applications in ink-jet print heads. Furthermore, the results of this work indicate that the droplet generation frequency is likely to be further increased by optimizing the process parameters.

• Journal of Fashion Business
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• v.14 no.6
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• pp.84-99
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• 2010

The aim of this study is to understand the wedding planners' general perceptions on Hanbok as a ceremonial dress in wedding ceremonies. Moreover, the study explores the aesthetic understanding of wedding planners on Hanbok which both influences their choice of recommendation and purchasing decisions. In the process of organizing the structure of weddings for clients, planners have naturally acquired the position of being able to influence the sales of the Hanbok industry. Moreover, brides-to-be are heavily dependant on wedding planners in sketching the outlines of their whole wedding. Therefore, in order to analyze the opinions of both subjects, a research survey was launched which involved three hundred participants from two groups: first, wedding planners who were free lancers working in the Chungdam District, and second, wedding planners who were working for wedding consulting firms. The survey method was based on one precedent study, in which a preliminary survey was conducted by interviewing companies in the Hanbok industry and wedding consulting firms, and an additional survey in the form of questionnaires. The STATA 11.0 program was used for analyzing the recruited data for frequency analysis and cross-tabulations analysis on career. The conclusion of this research may be used as substantial preliminary data in prospering the Hanbok industry, enhance and newly shape its marketing strategies and the conclusion is as follows. 1. Wedding planners have a more profound understanding on Hanbok and prioritize the significance of formative constituents in the order of color, material, style, size, and decoration. 2. The prospects of promoting the image of Hanbok through wedding planners is promising. According to surveys, this goes to show that the persuasion of wedding planners have brought a positive effect on choice of Hanbok and as wedding planners become more specialized, their involvement in preparing Hanbok with brides is increasing. 3. Wedding planners believed that the main reasons why future brides do not select Hanbok as a ceremony dress are that the cost is too high relative to practicality and that there are not enough opportunities to wear them.

• Journal of Fashion Business
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• v.20 no.4
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• pp.110-127
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• 2016

The purpose of this study was to analyze the brand preference, the clothing pursuit benefits, and the purchasing behavior of Chinese women. A survey questionnaire was distributed to Chinese women in their 20s and 30s. The surveys period was from 9th January 9th to $21^{st}$ February 2016. The respondents were 343 Chinese women living in Henan. The collected data was analyzed by frequency analysis, factor analysis, t-test, one-way analysis of variance, and Duncan's multiple range of verification. The key results of this study are herein summarized. The brands examined, listed in order of preference, are Ochirly, Only, Zara, Uniqlo, La Chapelle, H&M, Peace bird, Vero Moda, JNBY, and The Basic House. The five most preferred brands were then selected and further analyzed. For purchasing, the design and price were considered to be important, while for product evaluation, importance was given to the style, price, quality, and color. Factors important in the clothing pursuit benefits were found to be price pursuit, trend pursuit, brand pursuit, individual pursuit, comfort pursuit, and quality pursuit. Also, clothing pursuit benefits depends on the average monthly income, monthly clothing purchasing cost, and the education level of the individual. Lastly, we observed that the sources and store selection made noticeable difference in clothing pursuit benefits.