• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.1D
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• pp.129-136
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• 2008

Along with the development in cutting-edge digital technology, the street space is also being changed. Mobile telecommunication units and internet give a big change in a human being's lifestyle. And the ubiquitous computing is proceeding with expanding its application range from the indoor space to the street space. As the street furniture is the convenient facility that allows a human being's life in street space to be abundant, it is getting advanced. First of all, in terms of such phenomenon, this study analyzed the cases of a research on application of street space and the actual condition of a change in the number of individuals for the street furniture, through a literature research of ubiquitous. Also, it researched into the realities of using the street furniture of the walking-desired streets at Daehac-ro and Hongdae district, where are two representative places related to digital generation. The next was carried out FGI (Focus Group Interview) with users of the street space in front of Hongik University and managers of the street furniture, and was researched into the use & management behavior, and recognition level on the street furniture. Thus, the key elements were extracted such as interchange of information for cultural activities, automation for interaction variability in function. Finally the core elements for future vision of street furniture in this digital era were extracted in 3I, namely, Information, Intellectualization, and Integration. This is considered to be applied to the establishment of direction in the process of high-tech digitalization in street furniture related to information hereafter.

• Journal of Service Research and Studies
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• v.13 no.4
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• pp.160-172
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• 2023

The metaverse, derived from the fusion of "meta" and "universe," encompasses a three-dimensional virtual realm where avatars actively participate in a range of political, economic, social, and cultural activities. With the recent development of the metaverse, the traditional way of experiencing services is changing. While existing studies have mainly focused on the technological advancements of metaverse services (e.g., scope of technological enablers, application areas of technologies), recent studies are focusing on evaluating the quality of experience (QoE) of metaverse services from a customer perspective. This is because understanding and analyzing service characteristics that determine QoE from a customer perspective is essential for designing successful metaverse services. However, relatively few studies have explored the customer-oriented approach for QoE evaluation thus far. This study conducted an online review analysis using text mining to overcome this limitation. In particular, this study analyzed 227,332 online reviews of the Roblox service, known as a representative metaverse service, and identified points for improving the Roblox service based on the analysis results. As a result of the study, nine service features that can be used for QoE evaluation of metaverse services were derived, and the importance of each feature was estimated through relationship analysis with service satisfaction. The importance estimation results identified the "co-experience" feature as the most important. These findings provide valuable insights and implications for service companies to identify their strengths and weaknesses, and provide useful insights to gain an advantage in the changing metaverse service environment.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.17 no.3
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• pp.245-256
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• 2022

The purpose of this study is to provide comprehensive insights on the current research trends in entrepreneurship based on topic modeling and keyword co-occurrence analysis. This study queried Web of Science database with 'entrepreneurship' and collected 14,953 research articles between 2002 and 2021. The study used R program for topic modeling and VOSviewer program for keyword co-occurrence analysis. The results of this study are as follows. First, as a result of keyword co-occurrence analysis, 5 clusters divided: entrepreneurship and innovation cluster, entrepreneurship education cluster, social entrepreneurship and sustainability cluster, enterprise performance cluster, and knowledge and technology transfer cluster. Second, as a result of the topic modeling analysis, 12 topics found: start-up environment and economic development, international entrepreneurship, venture capital, government policy and support, social entrepreneurship, management-related issues, regional city planning and development, entrepreneurship research, and entrepreneurial intention. Finally, the study identified two hot topics(venture capital and entrepreneurship intention) and a cold topic(international entrepreneurship). The results of this study are useful to understand current research trends in entrepreneurship research and provide insights into research of entrepreneurship.

• Journal of Digital Convergence
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• v.21 no.3
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• pp.49-62
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• 2023

Due to social and cultural changes and the growth of aging people living as a single because of aging, lonely deaths are steadily increasing, and each local government has begun to define them as a social problem. The legal basis began to be established. In order to explore policy measures to prevent lonely deaths, this study examined cases of lonely death prevention policies using smart digital information technology (AI, IOT), which is being promoted by Daegu Metropolitan City to promote non-face-to-face policies to prevent lonely deaths. Policies related to lonely deaths are divided into two axes: lonely death prevention projects and post-excavation support projects. In order to operate these businesses efficiently, the provision of non-face-to-face services through artificial intelligence and the Internet of Things is recognized as a new service delivery system, so the importance and necessity of non-face-to-face services is increasing. It is time that multifaceted changes and preparations are needed, such as establishing a system to expand the non-face-to-face industry at the national level. In order to respond to another national disaster situation in the future, the non-face-to-face smart care system is being expanded in various welfare policies such as preventing lonely deaths. It will have to be activated.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.4
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• pp.540-548
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• 2015

This study examined the cultural characteristics and biological activities of fermented rice and amaranth with Bacillus subtilis KMKW4. These samples were made with various amounts of rice and amaranth [100:0 (R100), 90:10 (R90), 80:20 (R80), and 70:30 (R70)]. B. subtilis KMKW4 was used as starter for the fermentation, and its cultures at the lated logarithmic growth were inoculated for final concentration of 2% (v/v). Number of viable cells of fermented R80 (7.67 log CFU/mL) was greater than those of R100, R90, and R70 (7.48 log CFU/mL, 7.38 log CFU/mL, and 7.09 CFU/mL, respectively) during the fermentation period (120 h). Amylase activities of fermented R80 and R100 were 57.77 U/mL and 19.91 U/mL, respectively. Furthermore, amylase activities of fermented freeze-dried powders of R100 and R80 were 24.31 U/g and 9.12 U/g, respectively. Free sugar contents of R100 and R80 increased after fermentation, and that of R80 (5,454.15 mg/100 g) significantly increased compared to that of R100 (4,274.85 mg/100 g). The free amino acid content of R80 was higher than that of R100. DPPH and superoxide radical scavenging activities of 5 mg/mL of fermented freeze-dried powder (R80) were 44.21% and 89.76%, respectively. ACE inhibition rates and ${\alpha}$-glucosidase inhibitory activities were significantly higher in R80 than R100. This study suggested that fermentation of R80 might be a new potential source of antioxidant, anti-diabetic, and anti-hypertensive agents applicable to grain enzyme-containing foods.

• Journal of Venture Innovation
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• v.2 no.2
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• pp.31-46
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• 2019

Materials and Parts acts as the bridge in the manufacturing industry. In 2018, the materials and parts industry became the leading industry in Korea as its export reached $316.2 billion, accounting for 52.3 percent of the country's total exports. As such, it is the main industry of Korea leading the trade surplus, but when it comes to Japan, it is not. The trade deficit with Japan shrinks to $24 billion last year but the materials and parts industry still accounts for 60 percent of total deficit, which is about $15.1 billion. Today Japan has the top competitiveness in the high-tech materials and parts industry and the factors can be found in cooperation and symbiosis among companies, monotsukuri spirit, and long-term government policy. In order for Korean economy to pursue the Japan's high-tech materials and parts industry, the following change of perception is necessary. First, the material and parts industry requires win-win cooperation. In general, materials and parts are intermediate products. Therefore, it is important to understand the characterist that the transactions are all made up between companies not the with consumers. Second, expansion of joint technology development is absolutely necessary. South Korea is a leading country in the field of general-purpose materials and parts. However, the research shows that South Korea has structure which small and medium-sized companies could have difficulties in developing high-tech products as finding demand and developing market are hard due to low participation of large corporations at R&D stage. It is necessary for large corporations to participate in joint R&D and share opinions of customers from the beginning stage of R&D. Third, a long-term approach is needed. Structural vulnerabilities in the Korea's materials and parts industry, including the lack of advanced technologies is the main reason of solidification of Korea's trade deficit with Japan but there are also cultural differences about technology in the background. Even if it takes time, a long-term approach is absolutely necessary to build up technology and know-how in order to secure competitiveness in the high-tech materials and parts industry. This approach applies to act of corporation and government policy.

• Journal of Sericultural and Entomological Science
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• v.47 no.1
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• pp.12-17
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• 2005

To develop technique for the production of P. tenuipes stromata on a large scale, the infection of P. tenuipes and the growth of stroma were investigated by silkworm (Bombyx mori) variety. Also, studied about biological activites of fruiting body formed on silkworm. Infection rate of the 5th instar larvae of the silkworm with P. tenuipes was the highest in Yangwonjam, followed by Hachojam, Baegokjam and Chilbojam in that order. Also, as the inoculation times was increased, infection rate tended to be raised. The rate of fruiting body formation of the silkworm pupae infected with P. tenuipes was the highest in Baegokjam, followed by Yangwonjam and Chilbojam in the order. But, actually the fruiting body formation of the 5th instar larvae of the silkworm tested was good in Chilbojam, followed by Yangwonjam and Baegokjam in that order in 3 times spraying inoculation. The fruiting bodies of Yangwonjam and Chilbojam infected with P. tenuipes had high amount of Mannitol, but Baegokjam and Hachojam had high concentration of Glucose on a dry weight basis. The mean content of total amino acid in the fruiting bodies of P. tenuipes was 1.03 ${\mu}mole/g$. The distribution rate of amino acid components decreased in the order of Arginine (12.2%)>Glycine (10.5%)> Proline (9.6)>Tyrosine (8.9%)>Serine>Leucine>Threonine. The most abundant amino acid in the fruiting bodies of the Baegokjam, Chilbojam and Hachojam infected with P. tenuipes was arginine, while Yangwonjam was Glycine. The most abundant fatty acid in P.tenuipes was Oleic acid on a dry weight basis. The unsaturated fatty acids such as Oleic acid, Linoleic acid and Linolenic acid accounted for more than 78% of the total fatty acids.

• Journal of dental hygiene science
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• v.7 no.3
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• pp.153-159
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• 2007

To investigate requirements for the process of credit bank system in life-long education institutions attached to colleges, this research was conducted with seniors at the departments of dental hygiene and dental laboratory technology, in the health line of the specific College from March 26 to April 15, 2007, followed by analysis using an SPSS/WIN 12.0 program, obtaining the following results. 1. 89.7% of the respondents had a plan to take a bachelor's degree and 56.1% of whom had such a plan for the purpose of personal development (p<0.05). 2. 73.5% of the respondents preferred the credit bank system in a lifelong education institution attached to a college to take a bachelor's degree. 3. 34.8% presented the greatest advantage of taking a bachelor's degree through the credit bank system that they could take a degree in a short period of time while 33.8% presented the most serious disadvantage that they might low social recognition. 4. As for requirements for the process of operating the credit bank system, 80.3% regarded required subjects for the major as appropriate basic ones. 79.9% regarded it as proper that filling more than 20 credits made it possible to take a degree. 5. As directions for improving the system, it was found that the students was thinking that strict academic record management is needed, and the degrees from the system must be recognized equally to those in regular colleges, social awareness in those degrees should be enhanced, and also credits assigned to cultural subjects should be reduced, and the limitation in the number of credits being able to be obtained in one center should be removed.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.37 no.3
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• pp.1-12
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• 2019

A bridge is a structure constructed on water or in the air for convenient passage. Compared to other buildings, the building materials and structures of bridge required unique functions to cross the space. It depends on the productivity of the building, the level of science and technology, and the ecological environment of the building site. Also, it has important relationship with functions such as politics, military, economy, and life. Most of the academic research on bridges is focused on research in the field of bridge-building technology, so the study on the landscape aesthetics and history of bridges is lacking. Against this backdrop, the study will be valuable as a accumulation of both countries' understanding of bridge types, history and culture, as well as technical and aesthetic data, by analyzing the bridges located within the palaces of Korea and China. The research method is to analyze the bridge through field survey and literature analysis.. First, the bridges of royal palace of Korea and China are to be classified quantitatively as physical shapes, landscapes, and decorations by comparing the materials, forms, landscapes, and decorative culture of bridges. Second, characteristics, common points, and differences are extracted by classifying bridges of both countries. Also, the results are discussed based on the physical environment or cultural background. This would be worth cross-referencing in the building technology and aesthetics of the two countries. For the first important characteristics of result, main materials of Korean and Chinese palaces are stone. However, the bridge in China's royal palaces is also focused on wood. Second, in terms of form, the bridges in the royal gardens of Korea and China are all based on the beam bridge. However, the specific form, ratio, style of the beam bridge, and airspace of arched bridge are very different. Third, most of the connection methods are focused on the over bridge. It values the convergence with the surrounding landscape. Due to the difference in the area and location of water, the bridge in the Korean palace is more focused on the convergence of the surrounding buildings and plants, while the bridge in the Chinese palace is more concerned about the harmony of hydration. Fourth, the decoration places importance on the artistry and aesthetics of both the bridges in Korea and China. There is a difference in style in the same type of decoration due to culture.

• Korean Journal of Environment and Ecology
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• v.27 no.1
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• pp.85-98
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• 2013

In order to propose effective conservation management plan, this study verified ecological characteristics, humanities and Social characteristics. The research site is private property which is owned belonging to the Kim's of Gimhae that have long history. The study site is more than a thousand years old and was created for protecting from typhoon. There held the religious ritual what is called Dongsinje until 1960s. There have been protected and managed by the villagers. As the results of analysis, the area of windbreak are $12,392.69m^2$. The windbreak is dominated old years deciduous broad-leaved tree such as Zelkova serrata, Celtis sinensis, Aphananthe aspera. Around there were farmlands(52.1%), urbanized area(26.3%), forest area(16.6%). The vegetation communities of windbreak were classified by considering the dominant species and current status of forest. The forest types are following as; A. aspera community(I) which is using less pressure, Platycarya strobilacea-Carpinus coreana-Z. serrata community(II). Z. serrata community(III) which is using high pressure, Z. serrata-A. aspera community(IV), Z. serrata community(V) which is damaged under canopy trees. The windbreak was in good condition whereas, there were concerns the some wrong status was being undermined such as the wrong forest restoration projects in the past, the trails that is penetrating inside the forest, building up education facilities. Therefore, in order to restore the value of windbreak what is so called Suwol forest, we should improve the problems of forest ecosystem such as wrong management, forest fragmentation by facilities and decline in forest by lack of growing the next generation trees. In addition, we should remove excessive resting facilities and lead to passive use of forest. to improve the way of wrong management, moreover, we should close off he trails that is penetrating inside the forest for improving fragmentation. We should restore vegetation restoration and fostering the next generation trees for forest ecosystem. In order to restore unique of histo-cultural and ecological forest landscape, the next generation trees should be grown up that is the dominant species in Suwol forest. Moreover, as a results of comparing the between good vegetation communities and damaged vegetation communities, it is necessary to complementary planting for demeged vegetation communities, therefore there needs to 10.8 under canopy trees, 79.7 shrubs.