• The Korean Journal of Community Living Science
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• v.27 no.spc
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• pp.635-650
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• 2016

This study analyzed rural experiential educational programs that are currently in operation and examined the programs' reflection of Education for Sustainable Development (ESD) to explore the significance of those programs in terms of the ESD. In particular, this study analyzed cases of rural experiential educational programs from four villages in the capital region, Gyeongsang, Jeolla, and Chungcheong. The analysis results are as follows. Four villages' experiential educational programs share similar activities, such as nature experience, farming, traditional food and culture, games in nature, and craft. Each village has special programs and managements according to their geographical and environmental conditions. In addition, those programs are related to the ESD elements of health food, and cultural diversity (in sociocultural area) and of species diversity and environmental issues (in environmental area). On the other hand, the ESD elements in economic areas are not related to those programs. In addition, most of the villages plan and run experiential educational programs to keep and develop their own villages' sustainability. Rural experiential educational programs need to include various elements of ESD to develop rural communities.

• Korean Institute of Interior Design Journal
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• v.25 no.4
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• pp.125-134
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• 2016

This study intends to identify the spatial characteristics by carrying out the case studies of supportive housing examples of the Top Ten Projects awarded by the AIA Committee on Environments. Information of 7 awarded works was collected and content analysis was made according to design concepts and spatial compositions. As a result, the major design concepts applied to the examples were categorized into 5 points of regeneration of community, accessibility to the community, enhancement of spatial capability, participation and consensus of stakeholders and resident support services. Many supportive houses were built as a project to regenerate the deprived area and to reactivate the community through supplying supportive houses. In addition, supportive houses were developed by independent house type and shared house type and diverse scopes and sizes of community spaces were provided by including residents' exclusive community spaces that provide diverse services to vulnerable residents in addition to individual residential spaces and the community spaces that promote the consensus of residents and community people. The results of this study are expected to be used as basic material that provides the direction of desirable spatial design for introducing supportive housings in Korea.

• Journal of Internet Computing and Services
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• v.21 no.5
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• pp.87-95
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• 2020

Highly competitive environment has been forcing e-commerce industries to seek strategies to achieve competitive advantages. Mobile payment is a kind of service that allows mobile phone user to easily and conveniently initiate payments and transfer funds using their mobile phone anytime, and anywhere. This study is designed to identify factors that affect the intention of continued use of mobile payment services between users in Korea and Laos. As a result, first, in the case of Korean consumers, system quality, information quality and service quality were shown to have a positive effect on trust and satisfaction. In addition, trust and satisfaction were shown to have a positive effect on continuance intention. Second, in the case of Laotian consumers, system quality and service quality were shown to have a positive effect on trust, and system quality and information quality were shown to have a positive effect on satisfaction. In addition, trust and satisfaction were shown to have a positive effect on continuance intention. The study has its implications by analyzing factors affecting the continuance intention with the comparison of the customers from a developed nation and a developing nation, providing a direction of development for developing competitive advantages for those in development. For the developed, the study provides a guideline of what to modify and supplement in cases of entering the markets of developing nations.

• Journal of the Korean institute of surface engineering
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• v.40 no.5
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• pp.225-233
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• 2007

Effects of alloying elements on the corrosion layer formation of Pb-grid/active materials interface has been researched for improvement of corrosion resistance of Pb-Ca alloy. For this research, various amounts of alloying elements such as Sn, Ag and Ba were added to the Pb-Ca alloys and investigated their corrosion behaviors. Batteries fabricated by using these alloys as cathode grids were subjected to life cycle test. Overcharge life cycle test was carried out at $75^{\circ}C$, 4.5 A, for 110 hrs. with KS standard (KSC 8504). And then, after keeping the battery with open circuit state for 48 hr, discharge was carried out at 300A for 30 sec. Corrosion morphology and interface between Pb-grid and active materials were investigated by using ICP, SEM, WDX, and LPM. Corrosion layer of Pb-Ca alloy got thicken with increasing Ca content. For Pb-Ca-Sn alloy, thickness of corrosion layer decreased as Sn and Ag content increased gradually. In case of Pb-Ca-Sn-Ba alloy, thickness of corrosion layer decreased up to 0.02 wt% Ba addition, whereas, it was not changed in case of above 0.02 wt% Ba addition.

• The Journal of Internal Korean Medicine
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• v.37 no.4
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• pp.669-677
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• 2016

Reflux esophagitis is a common disease in developed nations. We describe the case of a female patient with endoscopic reflux esophagitis complicated by gastric dysmotility. Both electrogastrography and enterotachography were performed to detect gastric myoelectrical activity and pyloric sphincter function and evaluate gastric motility. The patient was treated only with herbal medications and general acupuncture, with electrical stimulation of the ST.36 (Zusanli) point, in addition to moxibustion therapy. After each primary and secondary treatment, the therapeutic effect was immediately evaluated. At the final follow-up 5 mon after the end of the secondary treatment, the patient’s general condition was assessed, in addition to the mucosa of the esophagus. At follow up, all the patients’ symptoms had disappeared, and the mucosa of the esophagus had returned to normal. We attributed these therapeutic effects to improved gastric dysmotility. To confirm the usefulness of this treatment method, studies of larger numbers of patients with reflux esophagitis treated with Korean traditional medicine are needed.

• East Asian Journal of Business Economics (EAJBE)
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• v.9 no.4
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• pp.69-80
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• 2021

Purpose - This study investigated the development process of the Chinese distribution industry and analyzed the current status of China's offline and online distribution industries under the development process of the Chinese distribution industry. In addition, the current status of offline distributors in China and representative companies were analyzed as case studies. Research design, data, and methodology - This study analyzed the overall environment of the Chinese distribution industry by using literature data. Then, this study conducted a case analysis using RT Mart and Jingdong, major companies in the distribution industry. Result -The main research results of this study show that the Chinese distribution market has already matured, and retailers are fiercely competing to secure sales and operating profits through various methods such as finding new management methods, improving awareness and customer loyalty by expanding the number of stores. Conclusion -Recently, the characteristic of China's distribution industry is that the boundaries of distribution are breaking down. Chinese retailers are taking strategies to expand the scope of services by erasing the boundaries of distribution. In other words, distribution companies are promoting a borderless distribution strategy in which consumers purchase products online and offline without restrictions on time and space. In addition, small stores in residential areas are on the rise compared to large-scale stores in the city center. The existing distribution industry operates various types of distribution stores to prepare for the post-COVID-19 crisis.

• Journal of the Korea Society of Computer and Information
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• v.24 no.7
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• pp.109-116
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• 2019

In this study, a GIS-based park safety assessment index was developed to enable objective park vulnerability assessment through data-based GIS analysis, a safety assessment was conducted by selecting a target site where various parks are operated and applying the park safety assessment index. In addition, a facility management system was developed for efficient management of the park safety assessment to update the park safety and provide a foothold for indirect PPGIS. In the case of the assessment index of the safety rating of the park, it was possible to conclude that the accurate quantitative performance was given to the calculation of the safety grade of the park based on the fact that the facilities are different depending on the environment and the size of the park. In addition, the marking the safety grade of parks, as well as the function to show the safety facilities of parks, a common living area for citizens, the management system is expected to have an impact on promoting the use of parks. In the future, in functions such as reporting of facility failures and verifying civil information are implemented by applying civic group participation programs and crowd-sourcing technologies, it is believed that all facilities as well as parks managed by the local government can be managed more efficiently.

• Journal of KIBIM
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• v.9 no.4
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• pp.10-20
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• 2019

As a result, the areas of knowledge that received the highest score in a positive impact were areas of risk management, while those that received the highest score in a negative impact were items of software management. In addition, each project was rated according to the score obtained. The distribution of grades by project was 71% for projects above middle grade and 29% for projects below middle grade. These results show that interest in BIM technology is increasing compared to the past, actual field application and research are actively being conducted, and that real construction sites also enjoy significant positive effects in terms of project management through BIM. In addition, the company is using BIM by applying advanced digital technologies such as AI technology, laser scanning technology and drone technology in line with the era of the fourth industrial revolution. Such a steady progress in future research on BIM technology development will reduce the number of low-grade projects and many middle-grade projects are expected to be upgraded to higher-level ones.

• Journal of Semiconductor Engineering
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• v.2 no.1
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• pp.109-118
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• 2021

This review paper describes the overall operating principle of a discrete-time delta-sigma modulator (DTDSM) and a continuous-time delta-sigma modulator (CTDSM) using a switched-capacitor (SC). In addition, research that has solved the problems related to each delta-sigma modulator (DSM) is introduced, and the latest developments are explained. This paper describes the chopper-stabilization technique that mitigates flicker noise, which is crucial for the DSM. In the case of DTDSM, this paper addresses the problems that arise when using SC circuits and explains the importance of the operational transconductance amplifier performance of the first integrator of the DSM. In the case of CTDSM, research that has reduced power consumption, and addresses the problems of clock jitter and excess loop delay is described. The recent developments of the analog front end, which have become important due to the increasing use of wireless sensors, is also described. In addition, this paper presents the advantages and disadvantages of the three-opamp instrumentation amplifier (IA), current feedback IA (CFIA), resistive feedback IA, and capacitively coupled IA (CCIA) methods for implementing instrumentation amplifiers in AFEs.

• Journal of The Korea Institute of Healthcare Architecture
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• v.26 no.4
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• pp.49-57
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• 2020

Purpose: In our country, the aged population accounted for about 13% of the total population in 2018. In addition, it is expected to exceed 20% in 2026, entering an super-aged society. However, the senior welfare housing in Korea currently accommodates only 0.08% of the elderly population, and the increasing amount of the elderly population is very small. Accordingly, this study aims to analyze the causes of supply shortages and to propose directions for revitalizing the supply of welfare housing for the elderly in the private sector. Methods: First, the causes and problems of the poor supply of welfare housing for the elderly were analyzed. Next, the direction was proposed through institutional and case-by-case surveys and expert interviews. Results: It suggested directions such as legal and institutional improvement, inducing the use of REITs, preparing policies to support consumers, allocating a certain percentage of senior welfare housing for the elderly in the reconstruction project, improving awareness of monthly living expenses, and re-discussing sales permits. Implications: Experts said that the direction proposed in this study can have a positive effect on supply activation. However, there were many opinions that re-discussion on permission for sales was necessary due to the excessive impact of the inability to sell. In addition, further research is needed for specific application of the proposed direction.