• Journal of Aerospace System Engineering
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• v.16 no.2
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• pp.33-38
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• 2022

In recent years, the space sector has been changing rapidly. The militarization of outer space is openly underway. On the other hand, space commercialization by private capital called "Newspace" is emerging in the U.S. Additionally, the Artemis project, a manned space moon exploration project, is being resumed 50 years after the end of the Apollo program. Eventually, the commercial use of space resources is actively being discussed. Due to the rapidly developing space technologies, the U.N. Space Treaty, enacted in 1967, has established the norms and principles of space activities. However, it may be nearing the end of its life. To confront the challenges of a new space era, Korea must engage in various legal and policy studies to meet these changes.

• Ocean and Polar Research
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• v.26 no.2
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• pp.187-197
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• 2004

The purpose of this paper is to investigate economic feasibility of manganese nodules in Korea area (Clarion-Clipperton Fracture Zone). We assumed that the production scale of manganese nodules were 3.0MT or 1.5MT and analyzed that the capital cost and operating cost were estimated in the four sectors, exploration, mining, transportation and metallurgical process. The capital cost and operating cost evaluation reflects the latest technical practices. First, for analyzing economic feasibility, the scenario suggests that the production of 4 metals can be made for 25 years. Assuming the discount rate at 8.0%, equity capital at 50% and tax at 27%. When manganese nodule were mininged 3.0 MT, economic feasibility analyses showed that IRR was 12.8 and pay-back period was 9.2 years, and when manganese nodules were mininged 1.5 MT, economic feasibility analyses showed that IRR was 4.0 and pay-back period was 11.8 years. This study indicated there is economic validity of at the product of manganese nodules 3.0 MT. In addition, we carried out a sensitivity analysis at the change of cobalt price on mining 1.5 MT. The result of sensitivity analysis clearly showed that economic validity is high at increasing of cobalt price 50% up.

• Journal of Digital Convergence
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• v.11 no.10
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• pp.153-168
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• 2013

Information security has been a major concern in organizations. The longstanding question of how to improve employees security behaviors and reduce human errors remains unanswered and requires further exploration in the information security domain. To do this, we propose a risk compensation theory-based model and examine the model. Research results shows that the relationships between information security countermeasures and information security compliance intention of employees are moderated by system vulnerability. However, the finding is contrary to the previously held risk compensation assumption and deserve further study. In addition, system quality does not play a moderator role in the relationship. Conclusions and implications are discussed.

• Health Policy and Management
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• v.32 no.1
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• pp.45-52
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• 2022

Background: There are regional variations in the incidence of coronavirus disease 2019 (COVID-19), which means that some regions are more exposed to the risk of COVID-19 than others. Therefore, this study aims to investigate regional variations in the incidence of COVID-19 in Korea and identify risk factors associated with the incidence of COVID-19 using community-level data. Methods: This study was conducted at the districts (si·gun·gu) level in Korea. Data of COVID-19 incidence by districts were collected from the official website of each province. Data was also obtained from the Korean Statistical Information Service and the Community Health Survey; socio-demographic factor, transmission pathway, healthcare resource, and factor in response to COVID-19. Community risk factors that drive the incidence of COVID-19 were selected using a least absolute shrinkage and selection operator regression. Results: As of June 2021, the incidence of COVID-19 differed by more than 80 times between districts. Among the candidate factors, sex ratio, population aged 20-29, local financial independence, population density, diabetes prevalence, and failure to comply with the quarantine rules were significantly associated with COVID-19 incidence. Conclusion: This study suggests setting COVID-19 quarantine policy and allocating resources, considering the community risk factors. Protecting vulnerable groups should be a high priority for these policies.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.27 no.3
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• pp.99-128
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• 2016

The government introduced a free semester in 2013, current targets middle school education as a core policy for nurturing creative talent, the year 2016 has been carried out in front of all middle school. This purpose of this study was to develop and spread the library-based reading culture program model for free semester. In this study, for which students, teachers, parents, conducted a survey of the reading culture program requirements librarian. A library-based reading program of free cultural self-semester course four areas according to the configuration (career exploration activities, group activities, arts and sports activities, theme activities select) was developed.

• 한국항공우주법학회:학술대회논문집
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• 2008.05a
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• pp.273-294
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• 2008

Korea now has a rapidly expanding space programme with exploration aspirations. The government is giving priority to the aerospace industry and, to put it on a better footing, enacted an Aerospace Industry Development Promotion Act in 1987, a Space Development Promotion Act in 2005 and a New Space Compensation for Damage Act in 2007. I would like to describe briefly the legislative history, main contents and comment for these three space acts including especially launch licensing, registration of space objects, use of satellite information, astronaut rescue, liability for compensation, third party liability insurance and establishment of committee and plans to assist the Korean space effort. Furthermore author proposed to legislate a draft for the establishment of a new Korean National Space Development Agency (KNSDA: tentative title) to create a similar body to Japan Aerospace Exploration Agency (JAXA), British National Space Centre (BNSC) of UK, French Centre National d'Etudes Spatiales (CNES), German Aerospace Center (DLR), Swedish Space Corporation, China Aerospace Science and Industry Corporation, Indian Space Research Organization (ISRO) as well as the Korean Space Agency (KSA: Tentative title) to create a similar body to Canadian Space Agency, European Space Agency, Russian Space Agency, Italian Space Agency, Israel Space Agency, Indian Department of Space, National Aeronautics and Space Administration (NASA) of USA, China National Space Administration in order to develope efficiently space industry. A call is made for Asian countries to unite and further their space development through a regional space agency.

• 한국지구물리탐사학회:학술대회논문집
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• 2000.09a
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• pp.5-18
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• 2000

토양${\cdot}$지하수환경분야와 관련된 제도들이 최근 개정 움직임을 보이고 있는 시점에서 조사단계 및 처리단계이후의 유지관리분야에서 지구물리탐사분야의 중요성이 점차 인식되고 있다. 특히 토양${\cdot}$지하수오염과 관련하여 오염유발가능시설의 $80\%$가 농촌지역에 산재되어 있으나, 그 규모와 오염정도에 대한 조사가 제대로 이루어지지 않은 상태이다. 이에 따라 지하수의 수질은 점차적으로 저질화 되어가고 있으나 비가시적인 이유로 인하여 그동안 소홀히 다루어져 왔다. 또한 오염조사 및 오염복원 등이 제도적으로 뿌리내리지 못해 오염원의 범위, 정도 등을 확인하는데 많은 한계점을 드러내고 있는 현실이다. 최근 관계법령의 개정을 통해 보다 엄격하고 강화된 규제 및 책임을 법제화하는 일은 현재와 미래의 환경보전을 위해 다행한 일이라 하겠다. 특히, 지하수오염 등은 국가적인 불행한 일이므로 향후 토양${\cdot}$지하수환경에 막대한 영향을 미칠 오염인자에 대한 정밀실태조사가 시급히 이루어져야 할 것이다. 따라서 현재 개정을 추진하고 있는 토양환경보전법과 지하수법의 개정취지를 제대로 살리면서 환경오염에 능동적으로 대처하기 위하여 지구물리탐사분야와 지질조사분야에서의 다양하고 정밀한 조사를 위한 방법들과 내용에 대한 연구가 절실히 요구되고 있다. 또한 이와 더불어 오염부지 특성조사를 위한 절차 및 방법들이 구체적으로 법제화되어 할 것이다.

• Environmental and Resource Economics Review
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• v.25 no.2
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• pp.255-276
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• 2016

This paper is designed to investigate the dynamic structure of optimal tariff imposed by the oil importing country from OPEC when OPEC increases the oil reserves through exploration and development. For this purpose, we used a Stckelberg differential game modeling approach, and tried to analyze two cases such that the one is the extraction cost is dependent on the oil reserves and the other is the extraction cost is independent of it. On the basis of this analysis, we propose that the importing contry has to impose dynamically inconsistent tariffs if the extraction cost is dependent on the oil reserves. Otherwise, she should impose dynamically consistent tariffs announced at initial time. In addition, we found that whether or not the exporting country uses some portion of oil produced for domestic consumption does not affect our policy proposition stated above.

• Journal of Digital Convergence
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• v.10 no.11
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• pp.613-618
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• 2012

ICT education guidelines revised in 2005 reinforce computer science elements such as algorithm, data structure, and programming covering all schools. And Ministry of Education emphasizes STEAM education. Most important is that "How instruct them". This means necessity of contents. So this paper suggests learning method of Stack and Queue using LEGO MINDSTORMS NXT. The main purpose is that how stack and queue are used, when robot explore realistic maze. Teaching and learning strategies are algorithm, flowchart, and NXT-G programming. Simple maze has path in left or right, but complex maze has three-way intersection. These are developed by authors. Master robot explores maze and push stack, and then return to entrance using stack. Master robot explores maze and transmits path to slave's queue. And then slave robot drives without exploration. Students can naturally learn principles and applications of them. Through these studies, it can improves ability of logical and creative thinking. Furthermore it can apply to ICT and STEAM education.

• Knowledge Management Research
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• v.21 no.4
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• pp.287-300
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• 2020

We investigate empirically the impact of IT exploration & exploitation capability and operational capability upon organizational agility, especially small and medium sized firms in the logistics industry in South Korea. Based on literature on the bilateral relationship between organizational agility and IT capability, we follow the established research model and propose hypotheses. This work takes an empirical methodology to test the hypotheses: design survey questionnaires, collect data, test reliability and validity of data, and finally test the hypotheses. Our results based on the data collected in 2018 present that IT exploration & exploitation capability significantly increases operational capability, and operational capability increases organizational agility. We find our contribution in updating previous research findings with recent data and in expanding the domain of research more specifically into small and medium sized firms in logistics industry in South Korea. Practically our work suggests that managers and policy makers should consider both fostering newly emerging IT exploration and existing IT resource exploitation capability in order to enhance organizational agility of those small and medium sized firms in logistics industry.