• The Journal of the Korea Contents Association
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• v.21 no.2
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• pp.59-67
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• 2021

This study was conducted to foster domestic tea (茶) culture as a single cultural content containing domestic culture, to increase domestic cultural competitiveness, and to suggest new cultural sanctions in the content era. Given the growth of the contents industry and the flow of domestic culture, cultural contents represented by the "Hallyu" of today do not exist at present, so it seems the time to move to keep pace with the times through the development of more Korean contents. Accordingly, this researcher has shed light on Korean tea (茶) culture, and reviewed the case of China, which is known as the origin of tea (茶) culture, and suggested a strategy for content creation of domestic tea (茶) culture. For this, the most prerequisite is to identify the identity and value of the domestic tea (茶) culture, and then expand education on tea (茶) culture and diversify the profit structure to serve as Korean cultural contents (茶) It suggested that the rediscovery of culture should be made.

• Journal of the Korean Society of Propulsion Engineers
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• v.25 no.4
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• pp.78-87
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• 2021

Understanding the liquid propellant transport phenomena in low gravity is essential for developing Korea Space Launch Vehicle (KSLV) upper-stage for the diversity of space missions. A low-gravity environment can be simulated via the free-fall method on the ground; however, the air drag is inevitable. To reduce air resistance during free fall, air-drag shield is usually adopted. In this study, the free-fall method was performed with an air-drag shield from a 7-m height tower. The acceleration of a falling object was measured and analyzed. Low gravity below 0.01 g was achieved during 1.2-s free fall with the air-drag shield. The minimum gravitational acceleration value at 1.2-s after free fall was ±0.005 g, which is comparable to the value obtained from Bremen drop tower experiments, ±0.002 g. A prolonged free-fall duration may enhance the low-gravity quality during the drop tower experiments.

• Journal of Convergence for Information Technology
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• v.12 no.4
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• pp.328-337
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• 2022

The importance of online marketing is emerging due to the prevalence of COVID-19. In order to respond to the changing business environment, we have collected ten years of sales data of SME bakery company that have experienced a decrease in sales due to the COVID-19. As a result of the analysis, we found that switching from offline markets to omnichannel B2B and B2C markets and taking 'small quantity batch production' to 'mass production in a small variety can improve management. This study presented online and offline marketing strategies through data analysis of small and medium-sized bakery companies, which have relatively insufficient digital capabilities compared to large companies, and could be a guideline for many SMEs.

• Journal of the Korean Society for Library and Information Science
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• v.56 no.2
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• pp.157-177
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• 2022

This study, in relation to the decision to designate April 12 as the Library Day and the week from that day as the Library Week starting in 2023 in accordance with the amendment of the Libraries Act, suggests ways how the Library Week could be activation plan based on the analysis of the meaning and history of the Library Week which started in 1964 and cases of the use of library week at home and abroad. The uses of library week at home and abroad were analyzed and based on the implications drawn, suggestions for promoting the Library Week, were made in terms of three aspects - efficient methods for using the Library Week, changes in programs, diversification of promotional strategies. This paper suggests in order to promote the Library Week, various ways of running events, online and offline platforms, honorary ambassadors, unique commemorative events, national campaigns, archiving and all-year-round promotional channels and system are needed. This study could be used as a reference for promoting the Library Day and Library Week that will start in 2023.

• Journal of the Economic Geographical Society of Korea
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• v.25 no.3
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• pp.420-450
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• 2022

Texas has recently emerged as a phenomenal industrial destination, which attracts headquarters, production facilities, and/or regional centers of global corporations including Tesla and Samsung. Known as "Texit", this trend of corporate investment to Texas has concentrated in highly developed industrial clusters (such as Dallas-Fort Worth, Houston, Austin, and San Antonio) since the early 2000s. Against this background, this paper examines sectoral and geographical characteristics of those clusters, and investigates associated state initiatives that have been introduced and implemented. As a result, key policy measures in the state are found to be aligned to free-market liberalism, diversified incentives, and regional specialization. Unlike Silicon Valley where Bohemian liberalism engendered vibrant entrepreneurship and innovative start-up formation, it is the strong state government that leads industrial cluster upgrading in Texas, while successfully harnessing lower income taxes and deregulation, affordable land and infrastructure, and quality higher education and human capital as regional assets for attracting inward investment.

• Journal of the Economic Geographical Society of Korea
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• v.25 no.3
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• pp.357-379
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• 2022

This study diagnoses the industrial varieties and innovation capacity of the Korean regional economy and discusses how the priority for autonomous regional development can be set. Since the late 1990s, regional development policies in Korea have been attempted from various angles to reduce the economic gap between the metropolitan area and non-metropolitan areas, but the establishment of a development strategy in consideration of regional industrial characteristics and innovation capabilities has been insufficient. With the advancement and diversification of technologies and industries, regions must seek strategic diversification to prepare for economic shocks, away from strategies that specialize in specific industries. In this study, industrial varieties in regional basis is characterized using unrelated and related varieties. Variety indices show different patterns between the metropolitan area and non-metropolitan areas and between manufacturing and service sectors, which raises the need to consider industrial characteristics in regional development. Lastly, using the variety index and the innovation capacity index as two dimensions, the regional economic status at the municipal level is categorized into four types, and proper regional development policy priorities are suggested for each type.

• Journal of the Korean Geosynthetics Society
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• v.21 no.4
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• pp.31-40
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• 2022

Recently, the Arctic resource development project, where undeveloped energy resources (oil, natural gas, etc.) are deposited, is actively being promoted for the perspective of diversifying the construction market and developing future energy resources. However, the frozen ground always has problems such as sinking and frost-heaving due to extreme weather. Therefore, it is necessary to analyze the thermal characteristics of the frozen soil to secure the stability of the ground structure. In this study, a series of laboratory tests were performed to evaluated the thermal characteristics of frozen soil samples in the oil sand field in Alberta, Canada. In additon, it was compared with the results of domestic(Gangwond-do) sample performed under the same conditions. As a comparison results of the experiments, it was clarified that the different frozen water content and thermal conductivity characteristics by temperature after completion of freezing could affect the frozen soil behavior.

• Journal of Aerospace System Engineering
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• v.16 no.2
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• pp.1-12
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• 2022

The purpose of this study was to investigate the supply and demand structure of the domestic space industry through analysis of industrial concentration index, by sector and dependence on revenue by customer type. As a result of industrial concentration analysis, in the case of space application, a supply monopoly or oligopoly structure was revealed in fields such as satellite broadcasting, space insurance, and satellite navigation. In the field of space equipment manufacturing, referred to as the traditional space industry, a supply monopoly structure appeared only in the field of launch pads and test facilities. As a result of analyzing the dependence on revenue by customer type, the dependence on the demand in the space application field is diversified among foreign countries, private institutions, and others. However, in the case of space equipment manufacturing, it is highly dependent on the demand of public institutions, and it seems that there is a monopsony structure.

• Journal of the Korea Society of Computer and Information
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• v.27 no.9
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• pp.59-68
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• 2022

A recommender system covers users, searches the items or services which users will like, and let users purchase them. Because recommendations from a recommender system are predictions of users' preferences for the items which they do not purchase yet, it is rarely possible to be drawn a perfect answer. An evaluation has been conducted to determine whether a prediction is right or not. However, it can be lower user's satisfaction if a recommender system focuses on only the preferences, that is caused by a 'filter bubble effect'. The filter bubble effect is an algorithmic bias that skews or limits the information an individual user sees on the recommended list. It is the reason why multiple metrics are required to evaluate recommender systems, and a diversity metrics is mainly used for it. In this paper, we compare three different methods for enhancing diversity for personalized recommendation - bin packing, weighted random choice, greedy re-ranking - with a practical e-commerce data acquired from a fashion shopping mall. Besides, we present the difference between experimental results and F1 scores.

• Journal of Korean Library and Information Science Society
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• v.53 no.4
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• pp.45-69
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• 2022

The purpose of this study is to suggest how to improve the public library service for the disabled, by analyzing stakeholders' needs for it. To this end, it analyzed stakeholders' needs, by conducting an analysis on the current condition of the public library service for the disabled, and IPA on and FGI with the disabled, beneficiaries of the service and service provides, employees in charge of it. The findings show that the current condition of the public library service for the disabled is very poor in terms of disabled users, budget for the service for the disabled and special data for the disabled. For the analysis on the needs for the service for the disabled, the results of IPA suggest that it is necessary to improve relevant policies and manage integrated programs reflecting users' needs, and those of FGI indicate that perceptions on disability need to be improved among the disabled, the non-disabled and employees, and that the usage guidance and publicity are required for disabled users to generally use the public library service.