• The Bulletin of The Korean Astronomical Society
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• v.41 no.2
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• pp.36.1-36.1
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• 2016

This is a presentation of the paper published as Kimm et al. 2016, ApJ, 823, 52. We investigate the formation of metal-poor globular clusters (GCs) at the center of two dark matter halos with $Mhalo{\sim}4{\times}107Msun$ at z>10 using cosmological radiation-hydrodynamics simulations. We find that very compact (${\leq}1$ pc) and massive (${\sim}6{\times}105Msun$) clusters form rapidly when pristine gas collapses isothermally with the aid of efficient $Ly{\alpha}$ emission during the transition from molecular-cooling halos to atomic-cooling halos. Because the local free-fall time of dense star-forming gas is very short (${\ll}1Myr$), a large fraction of the collapsed gas is turned into stars before stellar feedback processes blow out the gas and shut down star formation. Although the early stage of star formation is limited to a small region of the central star-forming disk, we find that the disk quickly fragments due to metal enrichment from supernovae. Sub-clusters formed in the fragmented clouds eventually merge with the main cluster at the center. The simulated clusters closely resemble the local GCs in mass and size but show a metallicity spread that is much wider than found in the local GCs. We discuss a role of pre-enrichment by Pop III and II stars as a potential solution to the latter issue. Although not without shortcomings, it is encouraging that a naive blind (not tuned) cosmological simulation presents a possible channel for the formation of at least some massive GCs.

• Fashion & Textile Research Journal
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• v.19 no.6
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• pp.671-680
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• 2017

Contemporary people can form a broad social sympathy on cultural products based on the present Korean image. K-pop is good material to use to share korean culture, and fans who are enthusiastic here are increasingly demanding cultural products. The visual materials of Bangtan Boys are collected from their album covers, and a concept book, and divided into specific and symbolic images. Based on this motif, three specific images: 'bulletproof vest', 'army house + superhero extract image', and 'Wings symbol', six designs were proposed. In addition, six motifs from the music videos for recent popular songs, 'Spring Day', 'Blood, Sweat and Tears' and 'Burning Up' were selected as symbolic images. Each selected image is divided into a normal line and a special line. The former is a relatively small, stable, and popular style, and the latter is a large, original, and bold style. By drawing and transforming extracted images and motifs using Adobe Illustrator CS6 and Adobe Photoshop CS6 program, a full-width umbrella design was developed. The messages that the Bangtan Boys wants to convey through their music are put into cultural products that contemporaries can sympathize with. By developing umbrellas, a variety of items and design goods can become desirable points of consumption as high-value products by domestic and foreign fandom. If designs that incorporate various elements of future K-pop contents as well as other Korean Wave contents are developed, it will be possible to develop original design products that will form global understanding.

• The Bulletin of The Korean Astronomical Society
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• v.42 no.2
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• pp.64.2-64.2
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• 2017

The Population III (Pop III) stars are thought to be massive. If massive Pop III stars form binary system and they experience mass transfer via the Roche lobe overflow, this may significantly change the properties of the system. For example, mass transfer in such system may shorten the period of the system, forming short period binary black hole (BBH) system, which is the most promising candidate for recently detected gravitational wave radiation sources. Also, there is an expectation that due to the stripped envelope of donor star by mass transfer, this system can play a significant role in the cosmic reionization by emitting more UV photons. However, this outcome highly depends on the initial properties of the system. We perform grid calculation on Pop III binary models with various initial primary masses (20 ~ 100 solar mass), initial separations, and initial mass ratios (q = 0.5 ~ 0.9). We find that 1) in most cases binary models show no increase in the number of ionizing photons and 2) formation of short period BBH system via mass transfer is highly unlikely.

• Journal of Fashion Business
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• v.22 no.6
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• pp.1-13
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• 2018

Idol goods refer to products such as cups and towels, or mementos or souvenirs that are manufactured to gratify the desires of fandom and may include the facial images of a star. The objective of this research was to explore the purchase behaviors of K-pop idol goods. Two hundred and sixty female idol goods purchasers in their twenties participated in an online survey. Cheering tools were the most often purchased idol goods, followed by idol slogans and dolls. To investigate the difference in idol goods' attributes they considered when shopping, respondents were divided into three purchase groups based on their annual total expense for purchasing idol goods. There were significant differences among light, medium and heavy purchasers in terms of goods' price, practical features, and scarcity. The light shopper group was majorly guided by price and practical features as compared to the other two groups, and heavy shopper group was majorly guided by scarcity attribute than in the other two shopper groups. The more they identified their favorite idols, the more they worked hard, the higher their income, the higher the expenses of investing in idol products, the more likely they were to repurchase idol goods. In term of post-purchase behavior of idol goods, most idol goods purchase by fans were stored rather than used, and few indicated that they purchase two identical idol goods for use and storage.

• The Bulletin of The Korean Astronomical Society
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• v.39 no.1
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• pp.81.2-81.2
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• 2014

To figure out the effect of rotation on the final mass of Pop III stars, 1D stellar evolution simulations of the evolution of mass-accreting protostars are performed, with zero metalicity and high constant mass accretion rates. The protostar reaches the Keplerian rotation very soon after the onset of mass accretion, but it may continue mass accretion via angular momentum transport induced by viscous stress or magnetic field. However, as the accreting star evolves, the envelope expands rapidly when the total mass reaches $5{\sim}6M_{\odot}$ and the corresponding Eddington factor sharply increases. Strong radiative pressure with rotation imposes different criteria for breakup at the stellar surface, and the so-called 'critical rotation (${\Omega}{\Gamma}$-limit)' is reached. As a result mass accretion rate has to be significantly lowered. This implies that characteristic masses of Pop III stars would be significantly lowered than the previous expectation.

• Journal of Korea Entertainment Industry Association
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• v.14 no.2
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• pp.1-14
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• 2020

This study was initiated by the interest in identifying what the characteristics of BTS' preference is in the expanded K-Pop market. For this study, a survey was conducted to Taiwan, Thailand, Vietnam, and Korea where BTS is popular. The results of this study show that Vietnam and Thailand have the most positive perceptions of most of the BTS preferences, and the factors affecting the highest quality were analyzed by the differentiating sense of BTS. BTS' preference is an independent variable consisting of five factors: singers and music, a discriminative sense, global communication, meditative lyrics and Korean sentiment. And it has been shown to have a statistically significant influence on both the fandom star and the fan community at a high level. In particular, the Identification desire for fandom star shows that the discriminative sense and meditative lyrics affect the positive at a high level. Also, the identification desire for the fan community's found that the attraction of singers and music affects the highest level of affection. This study was extended to Southeast Asian and Korean fans through a wide range of survey participants, and it is meaningful that a new perspective on the BTS preference was available. Nonetheless, Failure to take into account the various variables that may affect the fandom effect and the intent to purchase, and the lack of a survey of fans in the U.S. and Europe, which has more fans worldwide, could be a limitation of the study.

• Journal of Digital Convergence
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• v.17 no.2
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• pp.373-379
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• 2019

This study examines the process and scope of visual directing through the case of SM Entertainment, and explores the role of visual directors. As a result of the case study, SM created the visual directing team composed of art director and visual designers within the creative headquarters and was actively introducing visual directing for the development of idol. The visual directing process of SM, which is being developed as a part of the star marketing, consists of analyzing the environment in marketing strategy, establishing marketing strategy related to idol, setting up target image per artist, and finally planning and managing the visual directing project. The visual director in SM is required to have creative talent, logical persuasion, information analytical ability, visual expression ability, and field application ability. SM also applies visual directing accumulated from idol singers to SM business areas such as MD product design and production, product composition and designer collaboration, and SM town COEX artium. This paper have significance in attracting visual directing to the academic field.

• Journal of the Korean Society of Costume
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• v.50
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• pp.183-196
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• 2000

Andy Warhol is one of the great artists in the modern history of art who compares favorably with Picasso. His activities had his object on pervasion of a pop art and profit of the art industry. Many previous studies on his activities have attracted and held the attention of his works of art after 1960s. However in spite of his working as publisher of a fashion magazine fashion illustrator fashion model displayer and etc. in 1950s. there are few studies on his activities of 1950s. Hence this study investigates his works of art in 1950s. and intensively analyzes his effect on modern fashion. In 1950s, Andy Warhol had already been distinguished in works of art from other commercial designers through the illustration for advertising design window display of stores and usage of Hollywood stars as anessential element in his works for whom he had sighed when he was young His works were also characterized by a rejection of they originality of commercial arts. He had an great effect on youth's fashion in 1950s and has activities in 1950s had influence on the diffusion of the public punk fashion in 1970s and the street fashion in 1980s.

• Fashion & Textile Research Journal
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• v.15 no.5
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• pp.797-807
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• 2013

This study aims to provide basic information that would be useful to develop more specialized fashion design products for launching Korean Wave fashion, especially in Singapore market where Korean Wave culture has been expanding significantly. To identify recognition level of Korean Wave fashion, customer survey was conducted to females in their late 10s to early 20s. The analysis on the current fashion market also was made, which showed the result that the elegant style was dominant in the local fashion market. According to the customer survey result, K-pop was the most influential on Korean Wave. Amongst the female K-pop stars, 2NE1 was ranked the first who most of those surveyed wanted to copy her fashion style, and the ranking followed by Girl's Generation and BoA. With this result, it would be recommended to reflect K-pop star's style in designing fashion products as design and style turned out to be the most important factors that those surveyed considered upon clothing purchase. However, there should be various promotion activities in order to make Korea fashion brands known to the public because only 24.6% of those surveyed responded that they were aware of Korean fashion brands launched in Singapore market. Nevertheless, as those respondents were willing to buy Korean fashion brand products, there would be plenty of potential to succeed in Singapore market if there would be continuous efforts to raise Korean brand awareness.

• The Research Journal of the Costume Culture
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• v.18 no.6
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• pp.1090-1111
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• 2010

Thanks to both developments in various media such as the internet and TV and China's economic growth, the fashion market in China has gain a lot of attention by global businesses as a newly-raised spending market. Fashion companies in Korea have entered into the china since the late 1990s. For them to get competitive edges, they have to differentiate their brand by creating new design based on the culture becoming mega-trend in fashion market. So in this research, I try to create fashion designs based on Hallyu Stars' fashion styles and images, who come on as a new culture code in China and other Asian. For this, I conducted theological consideration on what the Hallyu is, and looked into fashion styles in soft dramas which 5 Hallyu Stars started in and street fashion in Shanghai in China. Based on the outcomes of analysis, I figured out those star's fashion style and created products targeting young generation born after 1980s in China. The conclusion of this study is as follows. Firstly, the very definition of Hallyu which can be described as a phenomenon in which Korean movies, soap operas, and pop music have become immensely popular throughout Asia.has been expanding to signify the proliferation of Korean culture as a whole. Secondly, having selected the 5 female stars representing Hallyu, we were able to analyze and categorize their fashion styles on the basis of their music videos, movies, and soap-operas. Thirdly, In order to explore the level of influence of Hallyu fashion industry, we studied the street fashion of Shanghai The result was that we could observe both the slim and feminine cool casual style and the cute and affectionate pretty casual style simultaneously.