• 한국화재소방학회논문지
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• 제33권1호
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• pp.164-170
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• 2019

본 연구는 우리나라 소방조직의 구조적 특성을 분석의 요소에 따라 확인하고 규명하고자 수행되었다. 이를 위하여, 소방공무원으로 구성된 소방조직을 연구대상으로 한정하고, 조직의 구조적 특성(복잡성, 집권성, 공식성)을 선행연구와 관계법령을 이용하여 확인하였다. 연구결과, 소방조직은 복잡성, 집권성, 공식성이 모두 높은 조직구조를 갖고 있는 것으로 나타났다. 이는 전형적인 기계적 관료제적의 조직 특성으로, 일반 정부행정조직이나 기업조직에서는 찾아 볼 수 없는 소방조직만의 고유한 특성이다. 본 연구결과는 소방조직의 학술적 개념을 정립하는데 기여가 될 것으로 기대된다.

• 유통과학연구
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• 제14권8호
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• pp.5-8
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• 2016

Purpose - With its considerable water resources, Lao People's Democratic Republic, hereafter Lao PDR, is considered to become the "battery" of the Southeast Asia region in the next 20 years. This paper explores the investment opportunity in the hydroelectricity development project in the Lao PDR. Research design, data, and methodology - Three significant investment factors including cultural factor, political factors, and economic factors are being literally analyzed. In fulfilling the purpose of this analysis, Num Theun 2 Power Company or NTPC, a current largest hydropower project in the country, is selected for an example of a mega investment project model in the country. Results - NTPC's investment plan, budgets, and current revenue and rate of return are briefly discussed throughout the paper. In addition, this paper also briefly compares and contrasts of the investment in the Lao PDR and investment in its neighboring Singapore who is considered one of the leading developed economies in the region. Conclusions - A recommendation is being proposed on the last section of this paper in the areas that Lao PDR may consider adopting in order to make its investment environment becomes more attractive to foreign investors.

• 신재생에너지
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• 제19권2호
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• pp.40-58
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• 2023

Several offshore wind power conflicts occur due to the problems in which the site selection process led by private operators is improperly managed. To review the institutional improvement measures that solve this problem, domestic and foreign institutions and operational cases were comparatively analyzed, focusing on key actors from the multi-level governance perspective. First, the status of the site selection process in the Republic of Korea, major issues in stakeholder conflicts, and discussions on the planned site system-related laws (draft) were reviewed. Next, the site selection process and relevant cases in Germany, the Netherlands, and Japan were analyzed. In all these countries, site selection is done by the central government. In Germany and the Netherlands, maritime-related ministries establish overall offshore wind power site plans and conduct strategic environmental assessments for these plans. Futhermore, in the process of determining each individual site, extensive site investigation including environmental assessments are conducted. This aspect needs to be supplemented in the discussion on the direction of institutional improvement in the Republic of Korea.

• 한국항공운항학회지
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• 제31권3호
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• pp.1-9
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• 2023

The overall Air Force's serious accident rate is decreasing, but the trainer's accident rate is on the rise from 0.24% in '00~'09 to 0.77% in '01~'19. Base on the SHELL model recommended by the ICAO, the risk factors of the introductory flight training course were analyzed, implications were examined, and safety promotion measures were proposed. A survey of 25 questions was organized based on regulations, guidelines, and related data for each component of the SHELL model in accordance with the introductory course of Air Force flight training. The survey was divided into a student group and instructor group and compared and analyzed into L-L, L-S, L-H, and L-E based on the results after conducting it, and implications for this were derived. Compared to other analysis factors, L-L showed that the average of the instructor group was relatively higher that of the student group in all questions.

• 한국수학교육학회지시리즈A:수학교육
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• 제41권1호
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• pp.127-137
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• 2002

Discrete Mathematics is newly introduced into the 7th Elementary and Secondary School Mathematics Curriculum of Republic of Korea. Every high school can choose Discrete Mathematics as an optional course from year 2002, but mostly from year 2003. According to its characteristics and objectives in the curriculum, we should know how to implement Discrete mathematics. But it is hard to predict whether Discrete Mathematics will be successful or not, since many studies have shown the lack of readiness for the course. In this study, we analyze the Discrete Mathematics text book developed recently in 2002. Then we see how Discrete Mathematics can be implemented. First, we suggest how the contents in the Discrete Mathematics text book are related to the mathematical values. This will clarify instruction and learning methods in Discrete Mathematics classrooms. Secondly, rich and various discrete contents should be taught. Students should appreciate the realistic merits of discrete mathematics. Thirdly, evaluation methods and their examples will be presented based upon the contents of she text. The evaluation that distinguishes individual achievement levels is closely related with implementation of Discrete mathematics in schools. Finally, we point out the weakness of Discrete Mathematics contents in the 7th curriculum to prepare ourselves for the 8th curriculum.

• 한국동물위생학회지
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• 제44권4호
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• pp.299-303
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• 2021

A captive male polar bear (Ursus maritimus) was found dead after a long-term anorexia at a Park Zoo in Republic of Korea. At necropsy, the liver lesion was prominent with hepatomegaly carrying a big mass and numerous small nodules in various sizes. The cut surface of the nodules was creamy white, firm, and solid with umbilicated appearance. Histologically, there was proliferation of hepatocellular neoplastic cells arranged in glandular-like (pseudoglandular) pattern and complete loss of hepatocellular arrangement. The immunoreactivity for neoplastic hepatocyte antigens was positive for hepatocyte paraffin 1, and negative for vimentin, cytokeratin 7 and 19, and carcinoembryonic antigen. Based on those diagnostic features, the neoplasia was diagnosed as hepatocellular carcinoma. To the author's knowledge, this is the first case report of hepatocellular carcinoma in the captive polar bear in Republic of Korea.

• 경영과학
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• 제13권3호
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• pp.163-172
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• 1996

According to flying hours, aircraft engines require regular overhaul for preventive maintenance. Because of hostile defense environment of Republic of Korea, the aircraft of republic of Korea Air Force(ROKAF) have been operated at the maximum level of availability and have similar overhaul schedule in several months. The concentration of overhaul schedule in a short period demands additional spare engines far exceeding the spare engines for corrective maintenance. If ROKAF decides to purchase extra engines for the preventive maintenance, the extra engines will be used only for the preventive maintenance and will be excess inventory for the most of aircraft life ccle. Also, the procurement of extra engines is significant investment for ROKAF. To help ROKAF schedule the preventive maintenance without significant spending, this study develops a dynamic programming model that is solvable using an integer programming algorithm. The model provides the number of engines that should be overhauled for a month for multiple periods under given constraints. ROKAF actually used this model to solve a T-59 engine overhaul problem and saved about three billion won at one time. ROKAF plans to use this model continuously for T-59 and other weapon systems. Thus, saving for long term will be significant to ROKAF. Finally, with minor modification, this model can be applied to deciding the minimum number of spare engines for preventive maintenance.

• Journal of Advanced Marine Engineering and Technology
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• 제35권3호
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• pp.317-322
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• 2011

This work has investigated the exhaust emissions such as Total Hydrocarbon (THC), Nitrogen Oxides(NOx), and Particulate Matter (PM) characteristics emitted from the tail-pipe of a continuously variable valve timing (CVVT) gasoline-fueled engine with different intake valve opening timings and injection pressures at the part load condition. Valve overlap period was varied from $40^{\circ}CA$ to $10^{\circ}CA$ and fuel injection pressure was increased from 3.5 bar to 5.0 bar. THC and NOx emissions decreased as intake valve opening timing was advanced regardless of fuel injection pressure. When the fuel was injected with the condition of 5.0 bar at all of valve overlap ranges, THC levels were reduced by 55%. NOx concentrations were diminished about 75% as valve overlap increased. PM size distributions were analyzed as bi-modal type of the nucleation and accumulation mode. Comparing with fuel injection pressures, PM emission levels were decreased at high pressure injection of 5.0 bar condition.

• 디지털융복합연구
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• 제9권4호
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• pp.19-28
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• 2011

최근 들어 미국과 한국 등에서 연달아 도입되고 있는 전자 소송시스템은 급격하게 기업경영환경을 변화시키고 있으며, 전자적으로 자료를 관리해야 하는 기업의 경우 상당한 영향을 받을 것으로 예상된다. 미국의 경우 2006년부터 민사소송에 전자소송시스템을 도입하였으며, 한국의 경우 소송 문서제출부담의 감소, 소송비용의 절감, 소송절차의 신속성, 투명성제고 등을 목적으로 2011년 5월부터 전자민사소송시스템을 운영하였는데 이에 대한 대비는 거의 이루어지지 않고 있다. 전자소송시스템의 도입이라는 것은 사법환경을 획기적으로 변화시키는 것이므로, 이 시스템의 도입이 기업의 경영환경에 미치는 영향을 면밀히 분석하고 소송시스템의 변화에 따른 기업 경영환경의 변화를 면밀히 주목해야 할 필요성이 있다.

• Journal of Plant Biotechnology
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• 제47권1호
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• pp.73-77
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• 2020

This study was conducted to examine the vitality of Bletilla striata Rchb.f. seed treated with different concentrations sodium hypochlorite (NaOCl) for different lengths of time. This study also examined the effect of NaOCl treatment times and concentrations on swelling formation and seed germination of B. striata seed. The non-treated B. striata seed had the highest survival rate (82.7%) Treatment with more than 1.5% NaOCl negatively affected the seed survival rate, as compared to concentrations of less than 1%. The swelling formation and seed germination percentages were highest (90.1% and 94.1%, respectively) when seeds were treated with 0.5% NaOCl for 20 min. These results can be used as important basic data for the growth and restoration of B. striata and further suggest the possibility of individual restoration in habitats.