• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.596-598
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• 2010

본 논문에서는 의료영상 중 X-ray 영상을 대상으로 영상을 분류하고 분류 결과에 따라 다중 키워드를 생성하는 방법을 제시한다. X-ray영상은 대부분 그레이 영상임으로 Local Binary Patterns (LBP)을 이용하여 픽셀간의 연관성을 특징으로 추출하고, 실시간 학습 및 분류가 가능한 Random Forests 분류기로 영상들을 30개의 클래스로 분류한다. 또한, 미리 정의된 신체 부위간의 관계 가중치를 분류 스코어에 결합하여 신뢰값을 생성하고 이를 기반으로 영상에 대해 다중 주석을 부여하게 된다. 이렇게 부여된 다중 주석은 키워드 기반의 의료영상을 가능케 함으로 보다 쉽고 효율적인 검색 환경을 제공할 수 있다.

• Journal of the Korean Home Economics Association
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• v.50 no.6
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• pp.1-11
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• 2012

As the immigrant population is rapidly growing in South Korea, it is important for the next generation of Korean adolescents to foster unprejudiced attitudes towards immigrants. This paper thus seeks to shed light on adolescent prejudice towards immigrants, by addressing the following three questions: (1) Does a mother's prejudice towards immigrants and parenting style influence their adolescent children's prejudice towards immigrants? (2) Does an adolescent's prejudice towards immigrants influence his/her self-identity? (3) Does an adolescent's prejudice towards immigrants influence his/her coping styles? The sample consisted of 288 pairs of Korean adolescents and their mothers. According to hierarchical regression analyses, a mother's prejudice towards immigrants significantly predicted her adolescent's prejudice towards immigrants, after taking sociodemographic variables into account, whereas her parenting style did not. In addition, having a low level of prejudice towards immigrants among adolescents predicted high levels of self-identity (e.g. independence, proprioceptive, and mission orientation), and a greater use of positive coping skills (e.g. support-seeking and problem-solving). Overall, results showed that mothers played a significant role in shaping their adolescent's prejudice towards immigrants. Results also provided evidence that prejudice towards immigrants may interfere with the healthy development of self-identity and coping style during adolescence. In conclusion, this study suggests that multicultural education for adolescents can be more effective, when it is provided in partnership with a parent education program that is designed to raise parental multicultural awareness.

• Journal of KIISE
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• v.42 no.3
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• pp.379-389
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• 2015

With the advent of non-volatile memories such as Phase Change Memory (PCM or PRAM) and Magneto Resistive RAM (MRAM), active studies have been carried out on how to replace Dynamic Random-Access Memory (DRAM) with PRAM. In this paper, we study both endurance and performance issues of existing join algorithms that are based on PRAM-based computer systems and have been widely used until now: Block Nested Loop Join, Sort-Merge Join, Grace Hash Join, and Hybrid Hash Join. Our experimental results show that the existing join algorithms need to be redesigned to improve both the endurance and performance of PRAMs. To the best of our knowledge, this is the first research to scientifically study the results of the four join algorithms running on PRAM-based systems. In this work, our main contribution is the modeling and implementation of a PRAM-based simulator for a comparative study of the existing join algorithms.

• Journal of Families and Better Life
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• v.33 no.2
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• pp.103-117
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• 2015

Family environment plays a significant role in adolescent development. Multicultural adolescents in Korea are brought up in a distinctive family environment, where they get to experience two different cultures within their families. Thus, it is important to examine how internal characteristics of the family environment in multicultural families and interactions between family members influence adolescents. The aim of the current study was to examine structural relationships among Southeast Asian mothers' and Korean fathers' bilingual socialization, adolescents' attitude toward mothers' native culture, and mother-adolescent relationship satisfaction. Specifically, the following two questions were addressed in this study: 1) Does bilingual socialization of each parent affect adolescents' attitude toward mothers' native culture? 2) Does children's attitude toward mothers' native culture affect mother-adolescent relationship satisfaction? To answer these questions, the survey data from the '2012 Nationwide Survey of Multicultural Families' was analysed, using SEM. The sample consisted of 318 multicultural adolescents (aged 9-17) living with Korean fathers and immigrant mothers from Southeast Asia. The main findings were as follows. First, Korean fathers' bilingual socialization had a positive effect on immigrant mothers' bilingual socialization. The path from Korean fathers' bilingual socialization to adolescents' attitude toward mothers' native culture was significantly mediated by immigrant mothers' bilingual socialization. Second, adolescents' attitude toward mothers' native culture had a positive effect on mother-adolescent relationship satisfaction. Results suggest that Korean fathers' bilingual socialization is an important factor for bilingual socialization of multicultural adolescents. It is also worth noting that each parent's bilingual socialization helps multicultural adolescents to form a positive identity as a member of multicultural families.

• Journal of Families and Better Life
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• v.33 no.2
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• pp.149-164
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• 2015

In recent years, leisure time has received increasing attention in Korean society. Despite the growing interest, however, there are very few studies that explored shared leisure time, especially among married couples. In this light, the present study examined variations in shared leisure time by demographic characteristics and associations between shared leisure time and quality of marital relationship. We used the third wave of the national data KLoWF (Korean Longitudinal Survey of Women and Families, 9,997 19-64 years old women). The study sample included 5,965 married women with no prior history of divorce. Results showed that Korean wives reported very little shared leisure time with their husbands. Given that the mean of the shared leisure time reported by employed women was significantly lower than that of the un-employed, we speculated that the time constraint may be one of the major barriers to having leisure time with one's spouse among Korean married couples. Married women in their 30's had the most frequent couple leisure time. The younger wives in their 20s had more cultural leisure time with their husbands, but sharing outdoor leisure time was not related to their age. The higher level of education for women was associated with greater shared active leisure time. However, visiting a husband's family often took place regardless of the wives' education level. After controlling for age, years of education, job status and annual family income, shared active leisure time (i.e., cultural activity and exercise) was positively related to marital satisfaction. Visiting one's own family, however, was not considered a leisure activity for Korean wives. Rather, frequent family visits were related to lower marital satisfaction. Findings shed light on how leisure life of married women with spouses are intertwined with not only their socioeconomic status and but also marital relationship in culturally unique ways.

• Archives of design research
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• v.13
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• pp.165-172
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• 1996

The National College of Art. Craft and Design of Sweden founded in 1811 is one of the oldest schools in the world and has taken very important role in the development of Scandinavian design This college usually called "Konstfack" in Sweden was transformed under the influence of Bauhaus into a modern design institute and the experiment:li curriculum and its unique teaching system was completed in the middle of 70' s The phrase "Insight och Flit" in the emblem of this school shows the Konslfack spirit which stresses the creative insight and endless diligence Korea is much different from Sweden in cultural aspects as well as in political and economic ones. In the later half of 19th century Sweden was one of the undeveloped countries in Europe and she just entered the Industrial Hevolution. Swedish culture at the time was also the barbarian one in comparison with English and Frech cultures. Even she had the difficulty in founding her own cultural identity So the Swedish intellectuals in early 20th century tried to find out "What is Swedish\ulcorner" and as the result they produced the Swedish Modern Movement style in 1950's. In this process Konstfack as well as the Swedish Society of Crafts and Design and the Svensk Form. the design magazine. has played the leading role. To look over the history and educational system of this school will be helpful for our design education. will be helpful for our design education.

• Economic and Environmental Geology
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• v.53 no.2
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• pp.147-157
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• 2020

Mass change in the Antarctic Ice Sheet(AIS) is the most important indicator of changes in Earth's climate system including global mean sea level rise that are largely affected by ongoing global warming. In this study, AIS mass variations are examined with satellite gravity data and outputs from a regional climate model. The analysis of gravity data shows that along the coastal region the Western AIS has experienced a continuous and significant ice loss while a slight increasing in the Eastern AIS during the study period (2002.08-2016.08). The temporal and spatial variations in ice mass changes are recovered by a regional climate model, but the recovered amplitudes are much smaller than those of observations. This under-estimation is remarkably resolved by modifying a base flow field for the ice discharge. The recovered estimates based on the ice-flow field can explain about 97% of the rate of mass change in observations before 2009. This implies that changes in ice flow dynamics along the coast line plays a pivotal role in regulating long-term budget of ice mass in AIS.

• Applied Chemistry for Engineering
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• v.25 no.2
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• pp.134-141
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• 2014

As the concerns about environmental problems, climate change and limited fossil resources increase, bio-based production of chemicals and polymers from renewable resources gains much attention as one of the promising solutions to deal with these problems. To solve these problems, much effort has been devoted to the development of sustainable process using renewable resources. Recently, many chemicals and polymers have been synthesized by biorefinery process and these bio-based chemicals and plastics have been suggested as strong candidates to substitute petroleum-based products. In this review, we discuss current advances on the development of metabolically engineered microorganisms for the efficient production of bio-based chemicals and polymers.

• Journal of the Korea Society of Computer and Information
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• v.16 no.7
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• pp.35-47
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• 2011

This paper proposes a set of rules to automatically generate OWL ontologies from relational databases. The purpose of the rules is to allow semantic access to existing RDB data without any database schema transformation and data migration process. In other words, the rules help a RDBMS play as a web ontology repository as well. However, the use of the mapping rules between RDB and OWL proposed by other studies for the objective causes troubles as follows. First, databases including the tables with a specific structure can't be translated into OWL. Second, the process for extracting an OWL individual unnecessarily lead to database join operations, or several SQL queries. On the other hand, our rules is designed to prevent these problems, can generate OWL classes and properties from database schemas and can generate OWL individuals from the database instances. In addition, an ontology generated by our rules is an OWL 2 DL ontology.

• Journal of the Korean Institute of Gas
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• v.27 no.3
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• pp.77-83
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• 2023

Energy consumption is increased by rapid industrialization. As a result, climate change is accelerating due to the increase in CO₂ concentration in the atmosphere. Therefore, a shift in the energy paradigm is required. Hydrogen is in the spotlight as a part of that. Currently 95% of hydrogen is fossil fuel-based reforming hydrogen which is accompanied by CO₂ emissions. This is called gray hydrogen, if the CO₂ is captured and emission of CO₂ is reduced, it can be converted into blue hydrogen. There are 3 technologies to capture CO₂: absorption, adsorption and membrane technology. In order to select CO₂ capture technology, the analysis of the exhaust gas should be carried out. The concentration of CO₂ in the flue gas from the hydrogen production process is higher than 20%if water is removed as well as the emission scale is classified as small and medium. So, the application of the membrane technology is more advantageous than the absorption. In addition, if LNG cold energy can be used for low temperature CO₂ capture system, the CO₂/N₂ selectivity of the membrane is higher than room temperature CO₂ capture and enabling an efficient CO₂ capture process. In this study, we will analyze the flue gas from hydrogen production process and discuss suitable CO₂ capture technology for it.