• The Journal of the Korea Contents Association
• /
• v.18 no.11
• /
• pp.55-62
• /
• 2018

Many domestic and international countries recently apply the blockchain technology to its related application fields. Not the enterprise-centered economy, the concept of the sharing economy which is controlled by individuals has been expanded. However, the development of the necessary system to realize the sharing economy in the agricultural sector has still been insufficient. Because the agricultural machinery rental business in the recent agricultural policies is managed by the government and the local government keeps and provides limited quantities and resources, its operation system has several problems. In case of high-priced agricultural machines, the machines can not be supplied adequately at the right time due to the limited quantities during the busy farming season. This paper proposes the sharing system that individual owners rent their agricultural machinery to growers using the blockchain technology. Thus, the proposed system provides the distributed method to solve agricultural machines of a lack of resources and also gives the secure service to all the growers.

• The Journal of the Korea Contents Association
• /
• v.15 no.7
• /
• pp.193-202
• /
• 2015

The Korean Housing Lease Act is special law of Civil Code and was enacted from March 5, 1981 as Law No. 3379 to guarantee the stability of residential life. And until January 6, 2015 there were 15 times revisions to protect the right of homeless people. However, it is true that many problems are exposed from enforcement. Because the processing without sufficient review of legislation. and it was enacted very quickly, so, at the part of opposing power that the Article 3 Paragraph 1 "if the housing tenant was delivered rental housing and finish the resident registration, from the day after even if the owner of the house was changed as third party tenant can resist with lease right". In addition, this provision made housing problems of the socially disadvantaged more seriously and the country did not made any way to protect this problems so many issues have been raised and a lot of disputes relating to Housing Lease. Therefore, in this paper derives a problem about opposing power of the Housing Lease Act for tenants of residential stability, and through the foreign legislation case, it propose the improvement to contribute to the residential stability realistically.

• The Korean Journal of Nuclear Medicine
• /
• v.33 no.3
• /
• pp.247-261
• /
• 1999

Purpose: The aim of this study was to evaluate the normal values of regional cerebral blood flow (rCBF) and cerebrovascular reserve (CVR) in normal children to aged volunteers using Tc-99m HMPAO, Materials and Methods: Thirty four right-handed normal volunteers (20 males, 14 females, mean age $40.3{\pm}24.9$ years, range 4 to 82 years) were underwent rost/acetazolamide (ACZ) brain SPECT using Tc-99m HMPAO and the sequential injection and subtraction method. rCBF was estimated on the basis of a semiquantitative approach by means of right/left ratio, region/cerebellum and region to whole brain ratios in (rental, parietal, temporal, and occipital lobes, basal ganglia, thalami, and cerebellum. CVR was measured by means of % perfusion increase calculated as % mean count change compared to rest rCBF in each regions. Results: Mean values of right to left ratios range from 1.004 to 1.018, rCBF was highest in cerebellum and lowest in basal ganglia and thalami. Frontal and temporal rCBF decreased while occipital and thalamic rCBF increased according to age. No sexual difference of rCBF was noted. Mean CVR was $29.9{\pm}12.9%$. Mean CVR significantly increased to late teens, and declined thereafter. After 6th decade, CVR in both frontal lobes, left parietal lobe and right basal ganglia decreased significantly with advancing age. There was no sexual difference of CVR. Conclusion: Quantitative assessment of CVR was possible by ACZ Tc-99m HMPAO brain SPECT. It revealed that rCBF and CVR changed according to age in normal Korean volunteers. There was no sexual difference.

• Journal of the Korea Convergence Society
• /
• v.7 no.1
• /
• pp.97-104
• /
• 2016

This study was to examine relation of oral health knowledge and oral health behavior, targeting university students who major in health-related majors 198 students and health-unrelated majors 203 students. Oral health behavior by general characteristics appears most highest junior and senior sophomore, health-related major, regular dental check-up, dental education experience. 'It is effective in preventing bad breath brushing the tongue when brushing' of oral health knowledge reached 94.5% most highest. The health-related is high 'fluoride helps to prevent cavities.' 'Brushing tongue' of oral health behavior is most highest average 4.20. The health-related is high 'I know the brushing method that's right for me, and enforcement' and 'I am regular scaling for periodontal disease prevention'. To identify influence that general characteristics and oral health knowledge to oral health behavior, regression analysis result Y(oral health behavior)=2.692+0.377(regular dental check-up)+0.145(rental education experience)+ 0.215(method of oral health education)+0.045(oral health knowledge) was come out. Therefore, university students need to improve their oral health, structuring environment where information about oral health is reached out easily.

• The Korean Journal of Air & Space Law and Policy
• /
• v.25 no.2
• /
• pp.139-162
• /
• 2010

In terms of the international air transport, the open skies policy implies freedom in the sky or opening the sky. In the normative respect, the open skies policy is a kind of open-door policy which gives various forms of traffic right to other countries, but on the other hand it is a policy of free competition in the international air transport. Since the Airline Deregulation Act of 1978, the United States has signed an open skies agreement with many countries, starting with the Netherlands, so that competitive large airlines can compete in the international air transport market where there exist a lot of business opportunities. South Korea now has an open skies agreement with more than 20 countries. The frequent flyer program (FFP) is part of a broad-based marketing alliance which has been used as an airfare strategy since the U.S. government's airline deregulation. The membership-based program is an incentive plan that provides mileage points to customers for using airline services and rewards customer loyalty in tangible forms based on their accumulated points. In its early stages, the frequent flyer program was focused on marketing efforts to attract customers, but now in the environment of intense competition among airlines, the program is used as an important strategic marketing tool for enhancing business performance. Therefore, airline companies agree that they need to identify customer needs in order to secure loyal customers more effectively. The outcomes from an airline's frequent flyer program can have a variety of effects on international competition. First, the airline can obtain a more dominant position in the air flight market by expanding its air route networks. Second, the availability of flight products for customers can be improved with an increase in flight frequency. Third, the airline can preferentially expand into new markets and thus gain advantages over its competitors. However, there are few empirical studies on the airline frequent flyer program. Accordingly, this study aims to explore the effects of the program on international competition, after reviewing the types of strategic alliance between airlines. Making strategic airline alliances is a worldwide trend resulting from the open skies policy. South Korea also needs to be making open skies agreements more realistic to promote the growth and competition of domestic airlines. The present study is about the performance of the airline frequent flyer program and international competition under the open skies policy. With a sample of five global alliance groups (Star, Oneworld, Wings, Qualiflyer and Skyteam), the study was attempted as an empirical study of the effects that the resource structures and levels of information technology held by airlines in each group have on the type of alliance, and one-way analysis of variance and regression analysis were used to test hypotheses. The findings of this study suggest that both large airline companies and small/medium-size airlines in an alliance group with global networks and organizations are able to achieve high performance and secure international competitiveness. Airline passengers earn mileage points by using non-flight services through an alliance network with hotels, car-rental services, duty-free shops, travel agents and more and show high interests in and preferences for related service benefits. Therefore, Korean airline companies should develop more aggressive marketing programs based on multilateral alliances with other services including hotels, as well as with other airlines.