• Journal of the East Asian Society of Dietary Life
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• v.18 no.3
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• pp.397-404
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• 2008

The purpose of this study was to help promote the consumption of rice by substituting rice powder for wheat flour in bread preparation and examining the effect of rice powder particle size in baked rice bread samples. Several experiments were carried to analyze and compare the quality characteristics of prepared samples of wheat flour and rice powder breads. The loaf volume index of the wheat flour bread was 6.34, and the indices of the rice powder bread samples, which were made from powder milled through 20, 35, and 45 mesh (S1, S2 and S3), were 5.37, 5.56, and 5.85, respectively. These data indicated that the loaf volume index of the rice powder bread was lower than that of the wheat flour bread, but the volume of the rice powder bread increased as the particle size of the rice powder became finer. According to texture analysis results using a rheometer, the hardness value of the wheat flour bread was $1.34{\times}10^3\;g/cm^2$, and values of S1, S2, and S3 were $1.74{\times}10^3\;g/cm^2$, $1.57{\times}10^3\;g/cm^2$, and $1.47{\times}10^3\;g/cm^2$, respectively. Therefore, S3, which was made from the finest powder among the rice powder samples, showed the lowest level of hardness. No significant differences were observed for springiness, cohesiveness, and gumminess among the bread samples. However, the wheat flour and rice powder breads had significant differences for bread crumb color. The L-value of S3(76.20) was similar to that of the wheat flour bread(77.22). but the L-values of S1(70.30) and S2(71.21) were lower than that of the wheat flour bread. In terms of redness and yellowness, the values of the rice powder breads were significantly different from those of the wheat flour bread. In terms of overall preference, the sensory evaluation results indicated that S3 was significantly the more preferred and the wheat flour bread was the least preferred among the bread samples. This study also investigated texture changes and mold occurrence in bread samples stored at $25^{\circ}C$ for 5 days. From the 3rd day of storage, bread texture became harder in all samples however, S3 showed the least level of change among the rice powder breads. The occurrence of mold began to increase abruptly from the 4th day of storage, and S2 and S3 showed mold numbers that were 2-fold greater than those of S1 and the wheat flour bread.

• Korean journal of communication and information
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• v.36
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• pp.374-398
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• 2006

This paper attempts to identify motivations of the satellite DMB use and to examine the relationship between user motivations and structure of genre consumption. Firstly, this paper identified motivational dimensions for satellite DMB usage. The results of the factor analysis revealed three dimensions: information-seeking, entertainment-oriented and social communication. It accounts for 69.9% of the variances found within this data. Secondly, the results of the regression analyses suggested that both information seeking and entertainment-oriented motivations were closely related to genre preferences of satellite DMB contents. In addition, these two motivations predicted genre repertoires and similarity in genre consumption. In conclusion, motivations of the satellite DMB use were the best predictors for explaining the structure of genre consumption.

• Korean Journal of Agricultural Science
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• v.41 no.3
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• pp.229-236
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• 2014

This study presents the estimates of heritabilities of body measurement traits and carcass traits, and genetic and phenotypic correlations of those traits for crossbred pigs in Korea. Body and ultrasound (A mode: Piglog 105) measurements in 221 pigs including body weight, length, height and width, three back fat thickness at the points of 4th, 14th rib and chine bone, eye muscle area and lean meat percent were collected at the ages of 70, 145 and 180 days and then slaughtered to measure carcass weight, back fat, belly, collar butt, spare rib, picnic shoulder, hind leg, loin, tenderloin, lean meat yield and intramuscular rough fat content in loin. Genetic analysis was done using a multi-trait animal model. Heritabilties of the body measurements were ranged from 0.331 to 0.559 and three measurements of back fat thickness were also high as range varying from 0.402 to 0.475 for the ages of 145 and 180 days. However, eye muscle area was moderate (0.296) at the age of 180 days. Heritabilities of retail cut yields were also high as ranged from 0.387 to 0.474 and of IMF content in loin was 0.499. Heritabilities of the cut percent traits were ranged from 0.249 to 0.488. Important positive genetic and phenotypic correlations were noted for all carcass yield traits (0.298 to 0.875 and 0.432 to 0.922, respectively). IMF showed low negative genetic correlations with carcass yield traits, such as carcass weight, picnic shoulder, hind leg, loin, tenderloin and lean meat yield whereas low positive genetic correlations with back fat, belly, collar butt and spare rib. Loin, tenderloin and lean meat percent showed negative genetic correlations with carcass weight, back fat thickness, collar butt, spare rib and picnic shoulder percent. The four body measurements at the ages of 70, 145 and 180 days had positive genetic correlations with belly, shoulder butt, spare rib, picnic shoulder and hind leg percent, but negative genetic correlations were shown with loin and tenderloin percent except body measurements at 70 days. The results suggest that carcass yield are negatively correlated with intramuscular fat content, which is a major factor deciding pork quality and the yield of loin and tenderloin are not increased as much as increase in body size. However, the proportions of belly and collar butt are increased with the body size. In conclusion, selection strategy should be designed according to the preference on composition of carcass in each country.

• Journal of Science and Technology Studies
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• v.2 no.2 s.4
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• pp.25-54
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• 2002

Without much communication, large-scale surveys of public knowledge of, and attitudes to, science (quantitative PUS) and case-study analyses of the public's understandings of science in particular (constructivist PUS) have dominated in the public understanding of science (PUS) area. Not only methodological preference but also a strong antipathy against value-orientations that each approach presumed to have and support has been barriers for quantitative PUS and constructivist PUS to benefit each other. In order to overcome such barriers, this paper demonstrates that value orientations guiding quantitative PUS have been much more diverse than what constructivist PUS researchers might think, and that quantitative PUS has indeed yielded the results consistent with and complementary to constructivist PUS. Finally this paper proposes that (1)quantitative PUS should test propositions provided by constructivist PUS, so that it can contribute much to the construction of more generalizable PUS theories and policies, and (2)constructivist PUS uses the outcome of quantitative PUS to develop more complex case studies which consider heterogeneous publics, trends of public evaluations of science, and how public attitudes to science in the abstract and public attitudes to science in particular in a specific context have effect on each other.

• The Journal of Korean Academy of Prosthodontics
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• v.48 no.1
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• pp.41-47
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• 2010

Purpose: The purpose of this study was to compare the functional abilities of the low bulb obturators with those of high bulb obturators in terms of patients' evaluation. Material and methods: This study included 11 maxillectomy patients who underwent postoperative prosthodontic rehabilitations. Two obturators of the same design except for different bulb heights, were fabricated for each of the maxillectomy patient. After two months of alternate use, the functions of the obturators were measured by investigating the patients' subjective evaluations in terms of convenience, speech, nasality, leakage, and mastication and identifying their preferred prostheses. Wilcoxon signed rank test was used as a statistical method (P < .05). Results: There were no significant differences in patient evaluations of low and high bulb obturators (P >.05). And patients' preferences varied. Conclusion: In extreme situation such as in mouth opening limitation, the use of low bulb obturators can be recommended and result in comparable speech function to that of obturators with high lateral walls.

• Journal of The Korean Association For Science Education
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• v.35 no.1
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• pp.1-14
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• 2015

The purpose of this study is to examine North Korean defector students' characteristics in science learning through their voice in an "Angbuilgu" program, one of the Korean traditional science knowledge (TSK). We compared them with two other groups of contrasting backgrounds. The Angbuilgu program contains meaningful questions of time, everyday-life knowledge, Korean TSK, and western modern science (WMS). The teaching strategy consists of interactions between teacher and students, and scientific experiments. We applied this program to three groups and analyzed: North Korean defector students, elementary science gifted students, high school students in an advanced class. The characteristics of their science learning show the following: First, their interpretation of time as nature itself in their everyday life. They have rich experience and are familiar with time in nature. Second, they prefer science with complementary, caring, and humanist perspectives, which is in contrast to other groups with preference to the updated and practical science. Third, they lack scientific concepts but possess an abundance of everyday-life knowledge. Their linguistic expressions are ordinary rather than scientific. Fourth, they are familiar with narrative thinking more than scientific thinking. The results show that the science program using Korean TSK can help them accept new scientific knowledge as well as cultural pride, which plays a role in reconfirming their identity as one ethnicity. We expect that the contents of Korean TSK can be an intercultural field between North Korean defector students and our science curriculum.

• Journal of The Korean Association For Science Education
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• v.32 no.7
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• pp.1222-1240
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• 2012

The purpose of this study was to compare the differences of the vocational values and the career orientation of science between middle school scientifically gifted students and non-gifted students. The subjects were 85 middle school scientifically gifted students and 139 middle school non-gifted students. For this purpose, the questionnaires about vocational values and science career orientation were administered. The results of this study were as follows: First, the vocational values between two groups were significantly different in 'diversity', 'reward', 'social recognition' and 'autonomy' among all 11 domains. 'Diversity' and 'autonomy' showed the highest scores for scientifically gifted students. On the other hand, for the non-gifted students, 'reward' and 'social recognition' showed the highest scores. Second, the grand mean of the science career orientation between two groups showed significant differences. The average of scientifically gifted students was significantly higher than that of the non-gifted students in all four sub-domains. Third, the main effect of the vocational values according to gender did not exist, but there were main effects, including diversity, reward, stability, social recognition and autonomy, between two groups. There was no interaction effect between group and gender in the vocational values. Fourth, there were interaction effects between group and gender in the science career orientation. The main effects existed in four sub-domains of science career orientation. However, according to gender, the main effect existed in the sub-domain 'job preference for science' between the male students and the female students.

• Journal of Aquaculture
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• v.21 no.1
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• pp.34-40
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• 2008

This study investigated the effect of rearing conditions on the spawning habit, juvenile growth and larvae development of Marphysa sanguinea, to develop techniques of its artificial seed production. M. sanguinea released trochophore larvae around the burrow when the water temperature was from $18^{\circ}C$ to $22^{\circ}C$. Larvae floated away after staying in the burrow for a while. Larvae secreted mucus eight days after release, covering their whole body with it, and developed ten somites 20 days after release. In preference of juveniles in different grain sizes of sediment, the highest survival rate was made in the grain substrate of $1{\sim}2$ mm in the mean diameter, but the lowest was in the $2{\sim}3$ mm grain substrate. Optimum growth was obtained at the rearing temperature of $24^{\circ}C$(SGR 1.10%), and it reached over $2{\sim}3$ times higher weight gain and specific growth rate than those reared at $21^{\circ}C(0.64),\;18^{\circ}C(0.56)$ and $15^{\circ}C$(0.42) for 50 days. Salinity also made a great difference in the growth and survival rate. The highest weight gain and growth rate were shown when the juveniles were reared at salinity 30 psu.

• Culinary science and hospitality research
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• v.17 no.5
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• pp.1-14
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• 2011

This study has been conducted to research the interests and tastes in Korean cuisine aiming at Germans who have lived in Korea for over 6 months, create new Korean menu items to their taste, and provide preliminary data for the globalization of Korean cuisine. Germans living in Korea tend to prefer Korean dishes as much as German dishes, and males have more opportunities to have different Korean dishes than females through social activities. Most of them answered that they barely cook Korean food and gave low marks for the globalization of Korean food and ease of cooking. The main reason given for not cooking Korean food themselves was that it is complicated to cook, which is a direct indication of the lack of knowledge of the recipes. Therefore, the importance of simplification and standardization of recipes for the globalization of Korean food was revealed. From the study on Korean food preferences based on the restaurant frequenting practices of Germans, the most popular Korean restaurants were those which were located in popular restaurant districts or within walking distance and those with an elegant or tranquil ambience. To promote the globalization of Korean food, development of diverse easy recipes or education about Korean dishes for foreigners would enhance their understanding and familiarity of Korean cuisine.

• The Research Journal of the Costume Culture
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• v.4 no.2
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• pp.113-124
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• 1996

This research was designed to find out what is a distictive feature of the design elements of Korean women's costume and its influence by analizing the trend of Korean women's constume during the period of 1890 and 1995. The research was analized by a total of 854 random samples of clothing styles collected from materials in the museums and from articles of three leading newspapers and one of the best women's magazines in Korea. The changing trend of Korean women's costume was found out to be as follows: 1. In around 1910s, the trend of Korean women's costume has been changed into two-tier structure of both Korean and Western styles, and the typical and traditional Korean women's street wears such as 'Chang-ot' and 'Tsdechima' have been gradually diminished. 2. From 1920s, length of the Korean skirt, which was unnecessarily long and inconvenient, has been getting shorter for the convenience of walking. In addition, Korean women's underwear has become simplified, and sports wear could be seen for the first time in Korea. 3. During 1960s, the Western clothing styles have been increased rather than Korean styles as the street wear of the Korean women. 4. In 1970s, blue jeans, mini-skirts and casual wears have become a trend or fashion for women in Korea. 5. In 1980s, a fashion of unisex mode has arrived in this country, and from the year of 1987, wearing of panties among the Korean women has been increased rather than skirts wearing for the street wear. 6. During 1990s, various forma of complex styles came into being in such styles as so-called 'orange class style,' 'protruding navel T-shirts' and 'runner wear speedy.' From mid-1990s, Korean women have turned out to prefer the cute and light costumes by placing emphasis on the image of intellectual, professional and functional wears. The changing special feature of the Korean women's clothing designs could be distinctively observed during 1960s as the modernization policies in Korea have been processed during the period. The clothing trend before 1960 was to change and to solve problems of inconvenient and impractical wears, but the trend after 1960 was seen as a change to confirm a trend of the world fashion. From mid-1990s, however, preference of Korean women's self-conceited conception socially and an unquestionable changing pattern of Korean women's life.