• International journal of advanced smart convergence
• /
• 제8권3호
• /
• pp.20-26
• /
• 2019

This study multi-dimensionally analyzes a sport documentary, All or Nothing: Manchester City, which is an original content on Prime Video, an American Over-The-Top (OTT) platform. Due to the success of South Korean soccer player Heung-min Son who plays Tottenham Hotspur of England, the popularity of the English Premier league is recently the greatest in South Korea along with the fact that soccer has been a popular sport for a long time. This study focuses on the success of the soccer club, Manchester City, which has become a rising star with its huge investment from United Arab Emirates; Manchester City won the league four times since 1992/1993 season. Also, during the 2017/2018 season, the background the documentary, Manchester City won the league title with new records, which shows the greatness of Manchester City. Especially, this study examines the documentary by 1) Story 2) Type of Scene 3) How to watch. Thus, this study explores not only the aspects of team-themed sport documentary that shows how and why Manchester City is excellent, but also the traits of the original content that explores the structure of the media platform.

• The Plant Pathology Journal
• /
• 제35권1호
• /
• pp.1-10
• /
• 2019

Wheat blast occurred in Bangladesh for the first time in Asia in 2016. It is caused by a fungal pathogen, Magnaporthe oryzae Triticum (MoT) pathotype. In this review, we focused on the current status of the wheat blast in regard to host, pathogen, and environment. Despite the many efforts to control the disease, it expanded to neighboring regions including India, the world's second largest wheat producer. However, the disease occurrence has definitely decreased in quantity, because of many farmers chose to grow alternate crops according to the government's directions. Bangladesh government planned to introduce blast resistant cultivars but knowledges about genetics of resistance is limited. The genome analyses of the pathogen population revealed that the isolates caused wheat blast in Bangladesh are genetically close to a South American lineage of Magnaporthe oryzae. Understanding the genomes of virulent strains would be important to find target resistance genes for wheat breeding. Although the drier winter weather in Bangladesh was not favorable for development of wheat blast before, recent global warming and climate change are posing an increasing risk of disease development. Bangladesh outbreak in 2016 was likely to be facilitated by an extraordinary warm and humid weather in the affected districts before the harvest season. Coordinated international collaboration and steady financial supports are needed to mitigate the fearsome wheat blast in South Asia before it becomes a catastrophe.

• Smart Structures and Systems
• /
• 제23권2호
• /
• pp.207-214
• /
• 2019

Achieving a pervious concrete (PC) with appropriate physical and mechanical properties used in pavement have been strongly investigated through the use of different materials specifically from the global waste materials of the populated areas. Discarded tires and the rubber tire particles have been currently manufactured as the recycled waste materials. In the current study, the combination of polymer, silica fume and rubber aggregates from rubber tire particles have been used to obtain an optimized PC resulting that the PC with silica fume, polymer and rubber aggregate replacement to mineral aggregate has greater compressive and flexural strength. The related flexural and compressive strength of the produced PC has been increased 31% and 18% compared to the mineral PC concrete, also, the impact resistance has been progressed 8% compared to the mineral aggregate PC and the permeability with Open Graded Fraction Course standard (OGFC). While the manufactured PC has significantly reduced the elasticity modulus of usual pervious concrete, the impact resistance has been remarkably improved.

• International Journal of Precision Engineering and Manufacturing
• /
• 제1권1호
• /
• pp.62-70
• /
• 2000

The design of gear train is a kind of mixed problems which have to determine various types of design variables; i,e., continuous, discrete, and integer variables. Therefore, the most common practice of optimum design using the derivative of objective function has difficulty in solving those kinds of problems and the optimum solution also depends on initial guess because there are many sophisticated constrains. In this study, the Genetic Algorithm is introduced for the optimum design of gear trains to solve such problems and we propose a genetic algorithm based gear design system. This system is applied for the geometrical volume(size) minimization problem of the two-stage gear train and the simple planetary gear train to show that genetic algorithm is better than the conventional algorithm solving the problems that have continuous, discrete, and integer variables. In this system, each design factor such as strength, durability, interference, contact ratio, etc. is considered on the basis of AGMA standards to satisfy the required design specification and the performance with minimizing the geometrical volume(size) of gear trains

• 융합보안논문지
• /
• 제24권3호
• /
• pp.203-208
• /
• 2024

군 경계지역에 피아식별 분류는 중요한 이슈 중에 하나이다. 군 경계지역에 나타날 수 있는 인원으로 북한군, 미군, 한국군, 일반인으로 구성하였고 현재 cctv를 통해 확인하고 있지만, 이를 더욱 효율적이고 체계적으로 구분하기 위해 North Korean Army, South Korean Army, American Army, People의 4진분류로 구분해 전이학습을 통해 학습시켰다. 파이토치 머신러닝 라이브러리를 사용하였고, 데이터셋은 구글에 공유된 각 항목에 해당하는 이미지들을 크롤링하여 활용하였다. 실험결과는 98.75%의 정확도로 각 항목을 구분하는 것을 볼 수 있다. 향후 이미지를 넘어서 동영상이나 음성 인식을 추가해 더욱 체계적이고 구체적으로 구분할 수 있는 연구가 지속될 수 있을 것이다.

• 한국유기농업학회지
• /
• 제32권2호
• /
• pp.137-159
• /
• 2024

Major crop prices have been raised significantly in recent years by COVID-19, the war in Ukraine, and weather-induced reductions in South American soybean production by unfavoured weather in 2022. Rising international crop prices are likely to destabilize food security in South Korea, which is highly dependent on foreign crops. This study analyzed the impact of soybean import price changes on the domestic soybean market and soybean food self-sufficiency rate from 2024 to 2029 using a dynamic partial equilibrium model. According to the scenario analysis results, if the import prices rise by 10% compared to the baseline, the soybean food self-sufficiency rate would increase by 1.33% in 2024, but it is expected to decrease to -0.58% in 2029 due to the continuous decrease in production. The results of this study are expected to be used as valuable information for policy authorities in establishing policies related to improving food self-sufficiency.

• 토지주택연구
• /
• 제11권2호
• /
• pp.59-68
• /
• 2020

Converting vacant lands for urban agriculture has become a popular topic for American cities to engage in on a program and policy level. The advocates of urban agriculture cite a number of potential benefits, ranging from promoting sustainable urban development, fostering social interaction and educational opportunities, regenerating neighborhoods, and empowering residents. With the emergence of vacant lands in South Korea, different strategies have been implemented for productive use. Nonetheless, less attention has been paid to reinvent vacant lands for urban agriculture. Therefore, this study has examined the case of the City of Milwaukee's vacant land initiatives and programs that were known to have brought a series of positive neighborhood revitalization outcomes. Compared to the case of Milwaukee, intensive land use and high property prices have turned to be the major actors that prevent an active use of vacant land for urban agriculture within the context of South Korean cities. Thus, this paper proposes the possibility of using vacant lands in apartment complexes for urban agriculture.

• 한국수산과학회지
• /
• 제20권4호
• /
• pp.360-369
• /
• 1987

남동 태평양의 위도 $5^{\circ}N\~12^{\circ}S$, 경도 $115^{\circ}$ 해역에서 1980년 12월 9일부터 1981년 4월 2일에 걸쳐 조업한 참치 어장 야장과 DBT 기록 테이프를 정리여, 어획된 해구의 각 정점마다의 수온 연직 구조 및 남동 태평양의 해양 환경과 그에 따른 어획물 포를 알아본 결과는 다음과 같다. 본 연구에서 조업이 행해진 해역은 위도 $5^{\circ}N\~12^{\circ}S$의 적도 용승역을 포함하는 남적도 해류역이였으며, 이 해역의 1, 2, 3월의 깊이 10m의 수온 수평분 포도를 살펴보면 거의 모든 해역의 온도가 $25^{\circ}C$ 정도임을 알 수 있다. 또, 위 해역의 염분은 $34.80\~35.00\%_{\circ}$ 였다. 한편 위 해역에서 눈다랑어와 황다랑어는 수온 약층의의 상부 수심 100m 정도에서 수온 약층 하부 수심 300m 까지의 수온차가 약 $12^{\circ}C$ 정도되는 SW type의 수온 연직 구조에서 주로 어획이 되었고, 수온 약층의 깊이가 깊을 수록 어획량이 많아지고 있다. 또한 날개다랑어는 온도 $8\~26^{\circ}C$이며 수심 50m 간격간의 수온 차가 약 $2.5^{\circ}C$로 균일한 변화를 나타내는 가장 완만한 형태인 SS type의 수온 연직 구조에서 주로 어획이 되었다. 그리고 눈다랑어의 최소한의 산소 요구량인 1ml/l 등양면의 깊이는 $140\~100^{\circ}W$에서는 주로 $200\~100m$ 수심이며 $110^{\circ}W$에서 부터 남미대륙쪽으로갈수록 등양면(1ml/l)의 길이는 100m 정도로 낮아진다. 어획량의 수평 분포를 살펴보면 남적도 해류역에서 눈다랑어가 황다랑어 보다 더 많이 어획되었다. 그리고, 남북미 대륙쪽에 가까와질수록 주 수온 약층 아주 얕아지고 그 기울기가 급하게 되며, 또 1ml/l 용재 산소 등양면의 깊이가 낮아질수록 황다랑어와 눈다랑어의 어획량이 줄고 있음을 고찰할 수 있다.

• Strategy21
• /
• 통권46호
• /
• pp.159-204
• /
• 2020

광복 이후 한반도가 남북으로 분단되면서 대한민국은 필연적으로 유사 해양국가가 되었다. 더불어 대한민국은 북한뿐만 아니라 중국과 러시아와 같은 강대국들에 둘러싸여 있는 지정학적 위치에 놓여 있다. 한편, 근래 들어 중국이 해군 항공 전력을 상당히 증강시키는 방향에 있기 때문에 우리 해군 또한 이에 대응할 수 있는 방안을 모색해야 한다. 이러한 이유로 인해 우리는 미국과의 끈끈한 동맹을 유지하고 있으나, 그 외의 국가들과는 불확실한 관계에 놓여있는 것이 현실이다. 따라서 현재 대한민국과 유사한 지정학적 위치에 있던 과거의 서독이 설정한 전력 확충의 방향성, 냉전기 당시 NATO 조직 내에서 담당하던 '지역해군'으로서의 역할, 그리고 주변국들과의 안보협력 구상방식은 대한민국에게 있어 의미 있는 참고사례가 될 수 있을 것이다.

• 안보군사학연구
• /
• 통권4호
• /
• pp.351-379
• /
• 2006

Former ministers of national defense and foreign affairs, intellectuals such as former and incumbent professors, and various NGO groups are demanding the South Korean government to stop promoting independence in operational control which is currently held by the United States Armed Forces in Korea commander. Although the Korea should exercise operational control independently in the future, orientation on the direction which should be taken under consideration in promoting this transfer should be assumed. First of all, South Korea must sufficiently examine the criticisms and dissenting opinions, and reflect them in promoting independence in operational control. From now on, the South Korean government should reflect the opinions of experts in operational control, and must promote the transfer with national consensus. Unilateral enforcement of the transfer may cause serious errors and aggravate conflicts Second, ROKA's exercise of independence in operational control should take place only after gaining restraint on North Korea's attack against the South, and the issues on nuclear weapons and weapons of mass destruction(WMD) has been resolved, and a peace regime has been reached. Furthermore, exercise of independence in wartime operational control should be promoted only if there is a guarantee that international trust and the military collaboration will be restored to a level beyond the present state. Third, the USFK and the Korean-US alliance is providing South Korea with national security, not to mention tremendous diplomatical, and economical benefits However, if the alliance between the two countries become weakened due to the exercise of the independence in operational control, we might suffer a great deal of loss. Even though reasonable justification and external independence may be gained through promoting independence in operational control, it should be promoted in a longitudinal manner because national security problems and conflicts may be intensified, and there is no actual profit in doing so. Fourth, if the Korean-US alliance becomes weakened and therefore the United States decides to discuss eastern-asia strategies, North Korea deterrence strategies, and Japanese rearmament issues with other neighboring countries, South Korea may become diplomatically isolated and a subordinate to surrounding countries, destroying the independence we have now instead of restoring it Therefore searching for means to reinforce international trust and collaboration between South Korea and the United States, and leaving ROKA’s independence in operational control as a long term objective would be a more realistic method.