• Journal of Digital Convergence
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• v.8 no.2
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• pp.161-176
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• 2010

Mobile internet has been emerged as a key IT infrastructure while mobile internet service equipments such as smart phones have been introduced in this mobile market. These mobile internet services would be more widely spread in shorter period because the wired internet services are already popular in our life and mobile internet services have the typical characteristics that ubiquitous has. This study investigates the research model for mobile internet services based on previous researches and tests it via questionnaire. The findings are that some of features such as joy and sufficiency are statistically significant as expected.

• The Korean Journal of Pain
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• v.35 no.3
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• pp.319-326
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• 2022

Background: As the internet usage becomes easily accessible, the patients are more frequently searching about diseases and medical/non-medical treatments. Considering that complex regional pain syndrome (CRPS) is a debilitating disease, it is important to check the information that patients are accessing. Therefore, this study aimed to investigate the reliability, sufficiency, and accuracy of the YouTube videos about CRPS. Methods: This study is a descriptive research which is derived by searching videos using the keyword 'complex regional pain syndrome' on YouTube. Relevance-based sequencing was used to sort the videos. Sources and video parameters were documented. To evaluate the accuracy, reliability and content quality of the videos, Global Quality Score, Journal of American Medical Association Benchmark Criteria and Modified DISCERN Questionnaire scales were used. Results: A total of 167 videos were included in this study. The majority of the videos originated from USA (80.2%, n = 134). The median number of views was 639 and the viewing rate was 73.3. Most of the videos had partially sufficient data and the interaction index viewing rate parameters for videos with high content quality were greater than videos with low content quality (P = 0.010, P = 0.014). Conclusions: Our results showed that videos about CRPS on YouTube mostly had partially sufficient data and include intermediate-high quality contents. Moreover, high-content quality videos had higher viewing rates, interaction indexes, number of likes, longer durations, as well as better reliability and accuracy scores. Videos with high quality and reliable content are needed to reduce misinformation about CRPS.

• Electronics and Telecommunications Trends
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• v.36 no.1
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• pp.54-63
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• 2021

Since the recent COVID-19 pandemic, countries have been strengthening trade protection for their security, and the importance of securing strategic materials, such as food, is drawing attention. In addition to the cultural aspects, the global preference for food produced in Korea is increasing because of the Korean Wave. Thus, the Korean food industry can be developed into a high-value-added export food industry. Currently, Korea has a low self-sufficiency rate for foodstuffs apart from rice. Korea also suffers from problems arising from population decline, aging, rapid climate change, and various animal and plant diseases. It is necessary to develop technologies that can overcome the production structures highly dependent on the outside world of food and foster them into export-type system industries. The global agricultural industry-related technologies are actively being modified via data accumulation, e.g., environmental data, production information, and distribution and consumption information in climate and production facilities, and by actively expanding the introduction of the latest information and communication technologies such as big data and artificial intelligence. However, long-term research and investment should precede the field of living organisms. Compared to other industries, it is necessary to overcome poor production and labor environment investment efficiency in the food industry with respect to the production cost, equipment postmanagement, development tailored to the eye level of field workers, and service models suitable for production facilities of various sizes. This paper discusses the flow of domestic and international technologies that form the core issues of the site centered on the 4th Industrial Revolution in the field of agriculture, livestock, and fisheries. It also explains the environmental awareness production technologies centered on sustainable intelligence platforms that link climate change responses, optimization of energy costs, and mass production for unmanned production, distribution, and consumption using the unstructured data obtained based on detection and growth measurement data.

• Journal of the Korean Association of Geographic Information Studies
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• v.25 no.4
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• pp.94-106
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• 2022

In order to increase timber self-sufficiency, Korea's 6th Basic Forest Plan aims to increase the density of forest roads to 12.8 m ha^-1 by 2037. However, due to rapid re-forestation, current management infrastructure is insufficient, with just 4.8 m ha^-1 of forest roads in 2017. This is partly due to time and cost limitations on the process of forest road feasibility evaluation, which considers factors such as topography and forest conditions. To solve this problem, we propose an eco-friendly and efficient forest road network planning method using a geographic information system (GIS), which can evaluate a potential road site remotely based on spatial information. To facilitate such planning, this study identifies forest road construction priorities that can be evaluated using spatial information, such as topography, forest type and forest disasters. A method of predicting the optimal route to connect a forest road with existing roads is also derived. Overlapping analysis was performed using GIS-MCE (which combines GIS with multi-criteria evaluation), targeting the areas of Cheongsong-gun and Buk-gu, Pohang-si, which have a low forest-road density. Each factor affecting the suitability of a proposed new forest road site was assigned a cost, creating a cost surface that facilitates prioritization for each forest type. The forest path's optimal route was then derived using least-cost path analysis. The results of this process were 30 forestry site recommendations in Cheongsong-gun and one in Buk-gu, Pohang-si; this would increase forest road density for the managed forest sites in Cheongsong-gun from 1.58 m ha^-1 to 2.55 m ha^-1. This evaluation method can contribute to the policy of increasing timber self-sufficiency by providing clear guidelines for selecting forest road construction sites and predicting optimal connections to the existing road network.

• Journal of The Korean Society of Agricultural Engineers
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• v.60 no.4
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• pp.27-35
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• 2018

Food consumption pattern changes, including a decrease in rice consumption and increasing demand for fresh vegetables, along with declining food self-sufficiency rate, more importance is being placed on agricultural industry within Korea. Taking these changes into consideration, there is an increasing necessity for managing upland fields on agricultural sector to revitalize agricultural land use. Therefore, in this study, upland use type was classified into agricultural economic, environmental conservation, and rural social frames. The purpose of this study was to suggest upland use plan with farm manager registration information and spatial data. As results of this analysis, the mean area of agricultural economic frame in Haenam (16.47 ha) was found to be wider than Muan (3.17 ha), and scale improvement zones (54 zones) were located in only Haenam. In case of environmental conservation frame, there's no zone of scenic agriculture land in both study areas, but landuse transition zones were located in Muan (278 zones) and Haenam (604 zones). Agro-healing zones of rural social frame were 1,018 zones in Muan and 1,588 zones in Haenam and kitchen garden sites were 342 zones in Muan and 370 zones in Haenam. These results could be used when we establish the plan of an agricultural infrastructure project or select places for a collaborative agricultural land use project.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.8
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• pp.2818-2826
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• 2010

This research was conducted to develop a model appropriate for the measurement of information quality of UCC service site. The evaluation factors that reflect more improvement of the information utilization capability were verified. Enhancement of information utilization capability can control greater amount of information among the users and site companies, and among users. Therefore, Wikipedia, for example, provides a Web 2.0 based information quality that is more advanced than Web 1.0 by allowing effective control of information among the users. This type of information quality presents 'information reliability' and 'information stability' as evaluation factors added to the factors such as 'information sufficiency' and 'information usability.' Information reliability and information stability are essential factors that need to conduct an evaluation in the Web 2.0 environment that can distribute greater number of information in the environment where all the users serve as participants. Moreover, 'interesting information' and 'originality of information' suggests that information itself should include the attributes that can attract the attention of users, due to the nature of the Attention Economics, which points out one of the Web 2.0 phenomenon that the number of information consumers is smaller than that of information suppliers.

• The Research Journal of the Costume Culture
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• v.11 no.6
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• pp.808-825
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• 2003

The purpose of this study is to research the reasons of this outcome by comparing the consumers purchasing characteristics of the Internet shopping mall and cable TV home shopping. A questionnaire was designed for on-line survey panels residing in Korea and the period of the survey was from July 30 to August 6, 2002. 1362 questionnaires were collected and 665 were chosen. The Frequency, %, t-test, and x2-test was performed using Korean version of SPSS 10.0. The summarized results of this study are as follows: The reasons of purchasing Apparel products through Internet and Cable TV home shopping are low price, time Saving, and convenience. The Item that is purchased most often at the Internet shopping mall is casual T-shirt. In case of the cable TV home shopping, it is inner-wears. Most of the users were satisfied with the home shopping. There are significant difference in ‘inexpensiveness of price’, ‘variety of product’, ‘sufficiency of product information’, ‘easiness of searching product’, ‘security of personal information’, ‘convenience of order’ in the side of consumers satisfaction. The reason of not using the media shopping are as follows: ‘Distrust of the product’ appeared one of the main reason of not using internet shopping mall and cable TV home shopping, accounting for 34.3%(Internet)/25.3%(Cable TV) of all respondents, followed by ‘absence of products(18.7%)’, In case of the cable TV home shopping, ‘lack of necessity of home shopping(24.7%)’ was the main reason.

• Korean Journal of Health Education and Promotion
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• v.21 no.1
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• pp.85-102
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• 2004

The purpose of this study was to examine the utilization of Internet health information sites by undergraduates at colleges related to public health. A self-administered questionnaire survey was carried out by 2,400 student from university and colleges in Taegu and Kyongsangbuk-do area from March 11, 2002 to March 31, 2002. 58.8% of the subjects responded that once connected rate of health information sites on the internet for year. In the connection rate of health information sites on the internet, the low class($\leq$300%), the middle class(40-70%), and the high class(80%$\leq$) accounted for 89.8%, 9.0%, and 1.2%, respectively. A ranking of internet health information sites, diseases are ranked frist and exercise is ranked second and obesity is ranked third. The motives Students submit reports 36.1% and obtained knowledge 22.8%. Sufficiency of health information sites on the internet, sufficient 19.6%, common 56.3%, and insufficient 24.1%, Satisfaction of health information, satisfied 18.4%, common 63.1%, and dissatisfied 18.4%. With regards to the health behavior of the subjects that contacted Internet health information sites, the nonsmoking rate was 86.2%, the nondrinking rate was 28.9%, the rate of exercise practice was 22.6%, the rate of normal sleep was 66.3%, the rate of eating breakfast was 37.1%, the rate of not eating between meals was 4.8%, and the standard BMI was 14.3%. With regards to the health behavior of the subjects that had not contacted Internet health information sites, the nonsmoking rate was 84.9%, the nondrinking rate was 26.0%, the rate of exercise practice was 18.5%, the rate of normal sleep was 72.1%, the rate of eating breakfast was 34.3%, the rate of not eating between meals was 5.0%, and the standard BMI was 17.0%. In the frequency of health behavior, the subjects with the Breslow Index of 0-3, 4-5 and 6-7 accounted for 80.9%, 18.8%, and 0.2%, respectively. The average score of health behavior was 2.80 out of 7. In conclusion, Internet health information sites are required for students to understand proper, reliable, interesting information and there is a need to develop simple criteria that the general public can understand and utilize.

• Journal of Korean Society for Geospatial Information Science
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• v.14 no.2 s.36
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• pp.77-88
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• 2006

Overpopulation has been one of the most serious problem of the Seoul Metropolitan Area (SMA), which consists of the City of Seoul, Incheon, and the whole of Gyeonggi Province. People have been still moving into SMA, especially being concentrated into the fringe of Seoul. This study examines the inner city decline phenomenon of SMA which can be easily found in large cities over the world, based on the demographic data of these area. In addition, this study monitors the imbalance in growing of SMA by analyzing RMI (Rank Mobility Index), and the inverse relation between the self sufficiency of the adjacent area and the commuting rate to Seoul by analyzing commuting data. Even though the total population has been unchanged, the internal change of population was substantial. The growth of Seoul Metro region was placed near the city of Seoul, especially commuter data reassured the population concentrations. The results will be useful in urban planning and growth management.

• Journal of the Korea Society of Computer and Information
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• v.29 no.1
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• pp.241-249
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• 2024

Using the panel data of 31 regions in China from 2006 to 2021, this paper analyzes the efficiency and influencing factors of the fiscal expenditure on compulsory education in China. Through the analysis found that the efficiency of some economically developed regional is lower, but the efficiency of economically backward regional is higher. In order to further analyze the influencing factors of the efficiency of fiscal expenditures on compulsory education, using Tobit model is analyzed. It is found that regional per capita GDP and fiscal self-sufficiency rate have a negative impact on the efficiency of fiscal expenditure on compulsory education. Age structure, percentage of fiscal expenditure on compulsory education and level of teachers have a positive impact on the efficiency of fiscal expenditure on compulsory education. Fiscal decentralization has no significant effect on the efficiency of fiscal expenditure on compulsory education.