• Journal of Korean Elementary Science Education
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• v.33 no.4
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• pp.736-750
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• 2014

The purposes of this study were to investigate concepts of Korean and American elementary school pre-service teachers on combustion, and to compare the concepts of Korean pre-service teachers with those of American pre-service teachers. For this study, concept test on combustion was administered to 23 Korean and 18 American elementary school pre-service teachers. The test composed of 6 items: 'Definition of combustion', 'The reason why a candle in a glass bottle is blown out when the bottle was closed', 'The change of gases in the bottle when a candle burns in it', 'The combustion products of a candle', 'The combustion products of steel wool', and 'The combustion products of a substance'. The results showed that the rates of elementary school pre-service teachers who had scientific concepts on combustion were very low in both Korean and American pre-service teachers' groups, although they were a little different from items. However the rates of pre-service teachers who had partial concepts and misconceptions on combustion were high in two groups. The levels of Korean elementary school pre-service teachers' concepts were a little higher than those of American elementary school pre-service teachers' concepts. The contents and activities on combustion which are in Korean and American science textbooks seem to affect building up their concepts on combustion.

• Fashion & Textile Research Journal
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• v.16 no.3
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• pp.366-377
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• 2014

This paper is a comparative research study between Korean and American women's garments from the 1910s to 1930s. It focuses on the articles and advertisements of Korean women's magazines and American women's magazines. The Korean women's magazines investigated are 신여자[Siyeoja], 신가정[Singajung], 부인[Buin], 신여성[Sinyeosung], and 여성[Yeosung]. The American woman's magazine investigated is Ladies' Home Journal. This paper explores the differences and similarities between the garments that appear in these magazines. There is little evidence about women's clothing in Korean women's magazines while the American women's magazine includes a lot of information about women's dress and life. Korean women usually wore Korean traditional costumes with traditional terms like Chima and Jeogori but they wore western shoes, stockings, shawls, umbrellas, and some clothing with western materials such as lace, velvet, and rayon with borrowed words. These western accessories and some clothing materials like lace and rayon were the same fashion in America. So, Korean women wore traditional and western clothing together while American women wore clothing influenced by Paris fashion. American women wore various pieces of clothing like suits, frocks, coats and sportswear with undergarments. There were also lots of advertisements about women's under garments and sportswear which was different from Korean women's clothing during the period.

• Journal of Ginseng Research
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• v.30 no.3
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• pp.172-180
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• 2006

The purpose of this study is classifying types of American ginseng and estimating their production cost and revenue by the types. Usually, the American ginseng can be classified as 4 different types; wild ginseng(WG), wild simulated ginseng(WSG), woods grown ginseng(WGG), and field cultivated ginseng(FCG). This paper estimates costs and benefits for FCG, WGG, and WSG per acre. The WGG & WSG are produced under the tree at mountain while the FCG is produced at large scale farm with machinery. Annual profit for the FCG is $2,222 while that of the WGG and the WSG are $2,759 and $3,799 per acre. Although quantity produced per acre for the WGG and WSG(600lbs and 160lbs) are much smaller than that of the FCG(3,000lbs), prices per pound for the WGG and WSG($125, 375$) are higher than that of the FCG($24). In addition, production costs for the WGG and WSG are lower than that of the FCG because of the costs for seeds, shadow facility, and chemicals are different by the types of production.

• Speech Sciences
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• v.8 no.4
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• pp.171-184
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• 2001

American English vowels and Korean vowels were compared by the plotformant method. For American English vowels, six General American English speakers pronounced English words in the b_t environment. For Korean vowels eight Kyongsang dialect speakers and eight Seoul dialect speakers pronounced Korean words in the environments of k_t, p_t and t_t. The formant plots were obtained by plotting F1/F2 tokens of 13 American English vowels on the F1xF2 plane. In spite of personal variations the 13 vowel spaces of all six American English speakers maintained their relative positions with some overlaps. Clear distinctions were made between i-I, e-$\varepsilon$, u-$\sigma$, and o-c. The domain of c and $\alpha$ overlapped for three American English speakers, but it did not for three other speakers. The 8 Korean vowel spaces of Kyongsang dialect speakers and Seoul dialect speakers were very similar and maintained their relative positions. No distinction was made between e and $\varepsilon$. In contrast with American English e which is a neutral vowel, Korean e was a back vowel. The comparison of 13 American English vowel positions and 8 Korean Vowel positions is expected to shed some light on the errors of English vowel pronunciation of Korean learners.

• Korean Journal of Pharmacognosy
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• v.45 no.2
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• pp.107-112
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• 2014

The purpose of this study is to develop a new preparation process of American ginseng (Panax quinquefolium) extract featuring high concentration of ginsenoside $Rg_3$, $Rg_5$, and $Rk_1$, Red ginseng special components. Chemical transformation from ginseng saponin glycosides to prosapogenin was analyzed by the HPLC. Extracts of American ginseng were processed under several treatment conditions of microwave and vinegar (about 14% acidity). The results showed that the quantity of ginsenoside $Rg_3$ increased by over 0.9% at the 20 minutes of the pH 2~4 vinegar and microwave American ginseng ethanol extract compared with other process times. The result of MAG-20 indicates that the American ginseng microwave and vinegar-processed American ginseng extracts (about 14% acidity) treated for 20 minutes produced the highest amount of ginsenoside $Rg_3$ (0.969%), $Rg_5$ (1.071%), and $Rk_1$ (0.247%). Besides, MAG-15 indicates that the microwave - and vinegar-processed American ginseng extracts (about 14% acidity) treated for 15 minutes produced the highest amount of ginsenoside $Rg_3$ (0.772%), $Rg_5$ (1.330%), and $Rk_1$ (0.386%). This indicates that American ginseng treated with microwave and vinegar had the quantity of the ginsenoside $Rg_3$ over 32 times the amount of the ginsenoside $Rg_3$ (which was not found in raw and American ginsengs) in the average commercial Red ginseng.

• Journal of the Korean Society of Costume
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• v.15
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• pp.217-231
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• 1990

The purposes of this study were to research 1) the background of origination, 2) the process of development and 3) the influences to modern clothing culture of American sportswear. The most Influential sportswear designers in America from beginning period to present : such as Claire McCardell, Calvin Klein, Ralph Lauren and Donna Karan were selected to study their life and achievements in the world sportswear market. The Results were as follows : 1) World War I & II have caused the greatest changes to modern history America became the center of world economy, society and culture. Politically, they have influenced democracy world-wide and raised the social status of women. The free American women enjoyed sports, Jazz drinking and car-driving. The advanced technology have accelerated mechanization and mass-production to the fashion industrv. 2) The above historical backgrounds have caused to change women's clothing to casual, practical and simple form. Dorothy Shaver at Lord & Taylor began promoting American designers who created the original American spirit. Claire McCardell created the seperated American sportswear to become world-wide fashion. Calvin Klein and Ralph Lauren, the sportswear designers who have the unique American feeling have come to have riches and fames equal to the top designers in Paris. 3) The American sportswear and fashion industry influenced Paris Mode, the traditional Haute Couture to open Pret-a-porter-a-porter. The concept of seperated coordination in American sportswear have promoted the advanced marketing techniques and merchandising systems to modern ready-to-wear industry. Fashion in 1980s have increased the mutual interdepedence between the American sportswear industry and the creative Paris Mode. And then, the fashion world in 1990s and 21C will be changed and developed on the basis of American sportswear mechanism.

• Journal of the Korean Society of Costume
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• v.57 no.4 s.113
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• pp.159-172
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• 2007

For the study on the Latin American culture reflected in fashion designs since 2000, the applications of Latin American culture shown in the four major collections from 2000 S/S to 2005 F/W (110 pieces) and some African designers' collections (157 pieces) have been analyzed and compared in three categories - forms, patterns and accessories. First, in the formal application of traditional clothes, the traditional elements of Indio culture are utilized in both the four major collections (76.8%) and the Latin American designers' collection (77.1%). Quechquemitl, the traditional Indio clothes are utilized in various forms in the four major collections, while the Latin American designers adopt various forms of traditional clothes, such as quechquemitl, camisa and pollera. Second, in the textile design, the patterns from Indio's traditional textile design are utilized in both the four major collections (68.7%) and the Latin American designers's collections (5.6%). The remarkable difference between the Latin American designers and the western designers is that the former like to mix the simple and primitive Indio culture with the colorful Iberian culture, and to utilize various patterns of feather, which is an important symbol in the traditional culture, expressing tradition in the modern touch. On the other hand, the western designers change the primitive and handcraft feel of Indio patterns into colorful ones, or mix the colorful Spanish-style flower patterns with primitive and passionate feel. Third, simple and handcraft feel of Indio accessories are utilized in modern fashion in both the four major collections and the Latin American designers' collections. The most remarkable difference between the two group of designers' collections is that various feather patterns are used in Latin American designers' collection, while the accessories reminding of relics of Maya and Inca are widely used in the four major collections.

• English & American cultural studies
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• v.14 no.2
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• pp.23-48
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• 2014

Considered as the first generation of the Chinese American male writers, Shawn Wong has often been tagged with the male-centered or cultural nationalistic writer for his first short novel Homebase since the 1970s. He has, however, shifted his own gender and cultural attitudes toward his male character in his second novel American Knees, published in 1995. By focusing on his second novel, this paper examines how Wong critically reconsiders the male-centeredness and cultural nationalism in a way to invalidate them in relationships among male and female characters in the formation of the Chinese American male's identity. Attempting to establish his own national and cultural identity as an American citizenship and the self-awareness of masculinity as a man, Rainsford Chan in Homebase believed that he could achieve his identity and masculinity with the chronological experiences related to his ancestors in American society. He even strictly erased the presence of female in his own identity formation. In doing so, he seemed to anchor his authorship at the discourse of the male-centeredness and cultural nationalist like other contemporary writers such as Frank Chin and Jeffrey Paul Chan who always strongly marked cultural tradition. By creating a non-conventional male character Raymond Ding with compromising and open-eared attitudes toward female characters, however, Wong dramatically changes the idea of representing the relationships between male and female characters in American Knees. In this novel, he suggests that the male character' identity can be properly formed not in the extreme reinforcement of masculinity or the ethnic-based cultural awareness but with the mutual understanding between male and female individuals regardless of ethnic and nationalistic biases. Consequently, Wong attempts to bail out of the male-centered images of the first generation of the Chinese American male writers through Raymond Ding.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.12 no.4
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• pp.271-287
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• 2008

This paper deals with American call and put options. Determining the fair price and the free boundary of an American option is a very difficult problem since they depends on each other. This paper presents numerical algorithms of finite element method based on the three-level scheme to compute both the price and the free boundary. One algorithm is designed for American call options and the other one for American put options. These algorithms are formulated on the system of the Jamshidian equation for the option price and the free boundary. Here, the Jamshidian equation is of a kind of the nonhomogeneous Black-Scholes equations. We prove the existence and uniqueness of the numerical solution by the Lax-Milgram lemma and carried out extensive numerical experiments to compare with various methods.

• Journal of the Korean Home Economics Association
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• v.39 no.9
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• pp.63-78
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• 2001

The purpose of this study is to compare how different the belief, social support, stress, coping and motivation between the Korean and American children. The data was collected from 157 Korean and 114 American students (5·8th grade). The resets were as follows: 1. Korean children's other dependency and pessimism level was significantly higher than those of American children. Also Korean children perceived higher than American children in the control-pressure stress and elf-respect stress. 2. Pessimism was observed the highest effect factor on Korean children's stress. 3. Korean students tried various coping under the relationship stress. 4. Problem oriented coping was found as an effective coping in Korean children. But the pursuit of support was found as an effective coping in American children.