• Journal of Platform Technology
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• v.12 no.1
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• pp.12-31
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• 2024

Today, many countries around the world recognize the development of autonomous vehicles as a national growth engine, support technology development through various projects, and promote it as national policy. China and Korea are representative countries that are strongly promoting autonomous vehicle policies. The Chinese government's policy direction for self-driving cars focuses on support for fostering new industries. Korea has established mid- to long-term goals and plans to foster the future mobility industry as a key growth engine and is promoting these as a national task. Recently, China and Korea have established national pilot areas to test autonomous vehicle operation and are actively pursuing policies. We aim to compare and analyze the operation status of self-driving cars in China's Xiong'an New Area and South Korea's Sejong City and derive policy implications regarding self-driving cars, which are emerging as a key industry of the future. According to the analysis results, it was found that China's Xiong'an New District is ahead of Korea's Sejong City in terms of leader leadership. As a result, autonomous driving is being operated at the government-wide and national level in Xiong'an New Area. In terms of the driving force, in the case of Xiongan New Area, the policy is being promoted by companies centered on Baidu, and in the case of Sejong City, the policy is being promoted by the local government. As a result, it is estimated that Xiongan New Area will be able to reach commercialization before Sejong City. In the final policy proposal, it was proposed to break away from the existing government-led method and switch to a collaboration with the private sector and a private-led method.

• Journal of the Korean Recycled Construction Resources Institute
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• v.8 no.1
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• pp.120-128
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• 2020

In this study, solid capsules using crystal growth-type inorganic materials that can be directly mixed with mortar were prepared. Thus, three levels of solid capsules were prepared. The prepared solid capsule was mixed with 3% of the cement mass, was evaluated quality and crack healing properties of the mortar. As a test results of the table flow and air content of the mortar mixed with the solid capsules showed that mix of the solid capsules was no effect on the table flow and air volume. As a test result of the crack healing properties of the mortar mixed with the solid capsule according to water flow test and crack closing test, the initial flow rate was decreased, it was confirmed that the reaction product occurred over time and the cracks were healed.

• The Korean Journal of Food And Nutrition
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• v.22 no.2
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• pp.313-319
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• 2009

To improve the growth of human mesenchymal stem cells(hMSCs) under general cell culture conditions(20% $O_2$ and 5% $CO_2$), we examined the effect of s-allylcysteine(SAC), which is known as an antioxidant and the main component of aged-garlic extract, on hydrogen peroxide-induced cellular stress in hMSCs. We found that SAC blocked hydrogen peroxideinduced cell death and cellular apoptosis, but that SAC did not improve the growth of hMSCs during short-term culture. To evaluate the protective effect of SAC, we examined the endogenous expression of the antioxidant enzymes catalase (CAT), superoxide dismutase(SOD), and glutathione peroxidase(Gpx) in hMSCs. Hydrogen peroxide was found to downregulate the expression of CAT, SOD, and Gpx at the protein level. However, in the pre-treatment group of SAC, SAC inhibited the hydrogen peroxide-induced down-regulation of CAT, SOD, and Gpx. Unfortunately, treatment with SAC alone did not induce the up-regulation of antioxidant enzymes and the cell proliferation of hMSCs. Surprisingly, SAC improved cell growth in a single cell level culture of hMSCs. These results indicate that SAC may be involved in the preservation of the self-renewal capacity of hMSCs. Taken together, SAC improves the proliferation of hMSCs via inhibition of oxidative-stress-induced cell apoptosis through regulation of antioxidant enzymes. In conclusion, SAC may be an indispensable component in an in vitro culture system of human MSCs for maintaining self-renewal and multipotent characterization of human MSCs.

• Proceedings of the Korean Vacuum Society Conference
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• 2011.08a
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• pp.291-291
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• 2011

1차원 반도체인 nanowires (NWs)는 전기적, 광학적으로 일반 bulk구조와 다른 특성을 가지고 있어서 현재 많은 연구가 되고 있다. 일반적으로 NWs는 Au 등의 금속 촉매를 이용하여 성장을 하게 되는데 이때 촉매가 오염물로 작용을 해서 결함을 만들어서 bandgap내에 defect level을 형성하게 된다. 본 연구는 Si(111) 기판 위에 Ga-droplet을 촉매로 사용을 하여 molecular beam epitaxy로 성장을 하였다. 성장온도는 600$^{\circ}C$로 고정을 하였고 growth rate은 GaAs(100) substrate에서 2.5 A/s로 Ga의 양을 고정하고 V/III ratio를 1부터 8까지 변화를 시켰다. As의 양에 따라서 생성되는 NWs의 개수가 증가하고 growth rate이 빨라지는 것을 확인할 수 있었다. Transmission Electron Microscopy 분석 결과 낮은 V/III ratio에서는 zincblende, wurtzite 그리고 stacking faults 가 혼재 되어 있는 것을 확인 할 수 있었다. 이러한 결함은 소자를 만드는데 한계가 있기 때문에 pure zincblende나 pure wurtzite를 가져야 하는데 V/III ratio : 8 에서 pure zincblende구조가 되었다. Gibbs-Thomson effect에 따르면 구조적 변화는 Ga droplet과 NWs의 접면에서 크기가 중요한 역할을 한다[1]. 연구 결과 V/III ratio : 8일 때 Ga droplet의 크기가 zincblende성장에 알맞다는 것을 예상할 수 있었다. laser confocal photoluminescence 결과 상온에서 1.43 eV의 bandgap을 가지는 bulk구조와는 다른 와 1.49eV의 bandgap을 가지는 것을 확인하였다.

• Journal of the Korean Institute of Rural Architecture
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• v.14 no.2
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• pp.11-18
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• 2012

Carlos Jimenez's 'House and Studio' was self-designed to fully function as both a home and workplace. Since its establishment in 1983, the installation has been continuously updated for almost 30 years solely under the guidance of the owner's life occurrences and routine needs. The additions and alterations succeeding the building's erection were executed to incorporate small yet symbolic fragments of the resident's memories and life episodes. The particularity of the 'House and Studio' can be compared with other residential remodeling and expansion projects in regards to certain key aspects. These means of comparison include, but are not limited to, building strictly under the direction of a master plan of development vs. allowing natural adaptations that comply with the resident's needs, rapid development vs. gradual advancement, the ornamenting by exposing showy features vs. the enhancing by addition of modest natural components, sustainability vs. sustenance, systematic room divisions vs. ambiguous spatial organization, possession as a materialized asset vs. preservation as a recollection of memories, and finally the recognition as one example of signature architecture vs. the witnessing of a maturing animated shelter. The given propositions can be further explained with the comprehension of Erich Fromm's theory of the 'Having' mode and 'Being' mode, two mechanisms that categorize the essence of human life. The 'Having' mode is described by the human greed for wealth, power, and influence, whereas the 'Being' mode is comprised of compassion, joy, and productivity. Fromm's thesis applies to the general sense of human life, but the ideas can be narrowed to accommodate the architectural standpoint. In architecture, the 'Having' mode can be translated to be the conspicuous form-oriented and self-contained object. The 'Being' mode, on the other hand, is transposed as the more natural form, incorporating the needs of the owner before commercialization. The growth of Jimenez's 'House and Studio' can be perceived as an architectural suggestion to the overcoming of human indifference caused by fixation on the 'Having' mode.

• Journal of Korea Society of Industrial Information Systems
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• v.20 no.2
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• pp.85-96
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• 2015

Despite the growth of body-related industry has generated considerable interest in this topic among both academics and practitioners, there has been lack of studies that explore body esteem toward online fashion products leads to purchase intentions, which self-monitoring moderates the relationship between body esteem toward online fashion products and purchase intentions. To fill this gap, this study aim to propose a research model where body esteem influences on the purchase intentions, with self-monitoring as a moderator. In order to test hypotheses, response from 172 consumers were achieved, and the proposed model was estimated by using hierarchical moderated regression analysis. The empirical results showed that body esteem negatively related to purchase intentions toward online fashion products. Additionally, this study indicated that the moderating effects of self-monitoring exist between body esteem and purchase intentions toward online fashion products, thereby implying the importance of contingent role of self-monitoring in managing online channels.

• The Journal of the Korea Contents Association
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• v.12 no.9
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• pp.182-193
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• 2012

Recent growth of ring-tone and ring-back-tone download market as the derived market of cellular phone yields the new trend in music consumption from listening to display. This means that consumer purchase the ring-tone and RBT not for his appreciation but for counterpart's consumption, in a word, conspicuous consumption. Study aims at questions on whether cellular phone user can perceive the ring-tone and RBT's brand personality and how they express their self-image via ring-tone and RBT. Survey was administered for 196 college students who is dominant purchase group of market segment. Hypotheses are such as : congruity of self image and brand personality of ring-tone and RBT. Through the T-test, findings said that user's extrovert self image are not led to ring-tone's extrovert brand personality and user's introvert self image are not led to introvert ring-tone's brand personality of ringtone. same result was applicable to RTB. Cellular phone user's purchase behavior are different from those of product and service.

• The Journal of the Convergence on Culture Technology
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• v.6 no.1
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• pp.7-16
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• 2020

We aimed that increasing the life satisfaction of children using the Community Child Centers, starting from the interest in healthy growth and development of children. The research was conducted to analyze the effect of stress on the life satisfaction of children using the local children center and the mediated effect of self-esteem. The subjects of this study are 438 children who were surveyed in 2017. They were originally extracted from the 2^nd survey of Community Child Center. For data analysis purposes, SPSS 250 and SPSS PROCESS macro v2.16 were used. The results of this study are as followed. Firstly, school stress has direct influence on life satisfaction, but it has no indirect effect on life satisfaction through self-esteem. Secondly, friend stress and consumption stress have no direct influence on life satisfaction, but they have indirect effect on life satisfaction through self-esteem. On the basis of the results, this study provided the social welfare policy and practical suggestions to reduce school stress and to enhance self-esteem, which are the key to achieving the life satisfaction of children.

• Journal of the Korea Society of Computer and Information
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• v.26 no.12
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• pp.265-271
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• 2021

The purpose of this study is to make practical suggestions to help multicultural adolescents' academic adaptation. For this purpose, changes in the academic adaptation of multicultural adolescents were identified, and longitudinal changes in self-esteem were explored in the relationship between bicultural acceptance attitude and academic adaptation. The data from the panel survey of multicultural youth of the Korea Youth Policy Institute was used for the analysis. The result of analyzing the longitudinal mediating effects of self-esteem between bicultural acceptance and academic adaptation through the multivariate potential growth model, the mediating effects of self-esteem was confirmed. Based on these results, the practical implications for enhancing the bicultural acceptance attitude, academic adaptation, and self-esteem of multicultural youth were presented.

• The Journal of the Korea Contents Association
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• v.16 no.6
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• pp.706-716
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• 2016

This study aims at finding impact of cultural and sports characteristics on urban growth. For the empirical analysis, this study uses unique urban resources associated with four categories (Social, Traffic, Cultural and Sports, and Spatial characteristics) among 228 cities and towns using a semi-log multiple regression analysis. The result shows that various local resources have significant impacts on urban growth in terms of population, industry, and fiscal self-reliance ratio. Impressively, cultural and sports resources are relatively beneficial for the urban growth. For the population and industrial growth, expanding public sports facilities and professional sports facilities can be more efficient. For solid local finance, typically focusing on professional sports facilities that have far-reaching ripple effects are useful. The conclusion for this study shows that urban growth policy should prioritize the cultural and sports resources because it can be more effective way to enhance not only for urban growth but also for quality of citizens' life.