• 한국산업융합학회 논문집
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• 제27권2_1호
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• pp.277-285
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• 2024

Hydrogen is considered a key energy source to achieve carbon neutrality through the global goal of 'net zero'. Due to limitations in producing green hydrogen domestically, Korean companies are interested in importing green hydrogen produced overseas. The Middle East has high-quality solar energy resources and is attracting attention as a region producing green hydrogen using renewable energy. To build a green ammonia plant, optimization of the production facility configuration and economic feasibility analysis are required. It is expected that it will contribute to reviewing the economic feasibility of constructing overseas hydrogen production plants through preliminary economic feasibility analysis.

• 치과방사선
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• 제27권1호
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• pp.7-16
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• 1997

This study was performed to demonstrate the method of image reformation for dental implants, using a personal computer with inexpensive softwares and to compare the images reformatted using the above method with those using Dentascan software. CT axial slices of 5 mandibles of 5 volunteers from GE Highspeed Advantage(GE Medical systems, U.S.A.) were used. Personal computer used for image reformation was PowerWave 6041120 (Power Computing Co, U.S.A.) and softwares used were Osiris (Univ. Hospital of Geneva, Switzerland) and Import ACCESS V1.H Designed Access Co., U.S.A.) for importing CT images and NIH Image 1.58 (NIH, U.S.A.) for image processing. Seven images were selected among the serial reconstructed cross-sectional images produced by Dentascan(DS group). Seven resliced cross-sectional images at the same position were obtained at the personal computer(PC group). Regression analysis of the measurements of PC group was done against those of DS group. Measurements of the bone height and width at the reformed cross-sectional images using Mac-compatible computer were highly correlated with those using workstation with Dentascan software(height : r²=0.999, p<0.001, width : r²=0.991, p<0.001). So, it is considered that we can use a personal computer with inexpensive softwares for the dental implant planning, instead of the expensive software and workstation.

• Journal of Oral Medicine and Pain
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• 제21권2호
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• pp.255-264
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• 1996

This study was performed to demonstrate the method of image reformation for dental implants, using a personal computer with inexpensive softwares and to compare the images reformatted using the above method with those using Dentascan software. CT axial slices of 4 mandibles of 4 volunteers from GE Highspeed Advantage(GE Medical systems, U.S.A.) were used. personal computer used for image reformation was PowerWave 604/120 (Power computing Co, U.S.A. ) and softwares used were Osiris (Univ. Hospital of Geneva, Switzerland) and ImportACLESS Vl.1 (Designed Access Co., U.S.A.) for importing CT images and NIH image 1.58 (NIH, U.S.A.) for image processing. Seven image were selected among the serial reconstructed cross-sectional images produced by Dentascan. Seven resliced cross-sectional images at the same position were obtained at the personal computer. Regression analysis of the measurements of PC group was done against those of DS group. Measurements of the bone height and width at the reformer cross-sectional images using Mac-compatible computer was highly correlated with those using workstation with Dentascan software(height : r2= 0.999, p<0.001, width : r2= 0.993, p <0.001). So, it is considered that we can use a personal computer with inexpensive software for the dental implant planning, instead of the expensive software and workstation.

• 한국산학기술학회논문지
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• 제7권5호
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• pp.982-991
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• 2006

스크린쿼터제는 한국영화계의 가장 중요한 쟁점 중의 하나다. 이 제도가 한국의 영화산업의 보호와 성장에 크게 유용하다는 주장과 오히려 과도한 제도적 보호가 자생력을 약화시키는 요인이 된다는 주장이 대립하고 있기 때문이다. 2006년 7월 1일부터 연간 73일 수준으로 축소되었는데, 이전에 비해 절반으로 줄어든 것이다. 역사적으로 한국에서 스크린쿼터제는 두 번의 시행과정을 겪었다. 첫 번째는 일본이 한국을 식민통치하고 있던 1935년부터 1945년의 해방까지의 기간 동안에 시행된 것이며 또 한 번은 1967년부터 시작해 현재까지 이르는 기간이다. 전자는 식민지 기간 동안 영화를 정치선전 수단으로 활용하려던 일본인들이 외국영화 특히 미국영화의 수입을 제한하기 위한 조치로 시행되었다. 1935년에는 외국영화의 상영비율이 전체 영화의 4분의 3 수준을 넘지 못하도록 제한했으며 1936년에는 3분의 2, 1937년에는 절반을 넘지 못하도록 점진적으로 제한 비율을 확대했다. 일본이 미국 진주만을 공격한 이후 태평양전쟁이 일어난 이후에는 미국영화의 수입을 전면적으로 금지했다. 외국영화의 상영을 제한했던 이유는 일본영화와 한국영화를 모두 포함하는 국산영화의 상영을 강제적으로 늘리기 위해서였다. 전쟁수행을 위한 정치적 선전 수단으로 활용하려고 한 것이다. 후자는 한국영화의 산업적 성장을 유도하기 위한 목적으로 시도되었다. 그러나 제도의 시행에도 불구하고 한국영화의 경쟁력은 개선되지 않았으며 극심한 불황에 시달렸다. 정책의 보호로 시장을 독과점한 한국의 영화사들은 관객이 원하는 영화를 개발하는 대신 외국영화의 수입을 통해 이익을 극대화하는데 만족하고 있었기 때문이다. 영화사 설립은 엄격하게 제한되었으며 외국영화 수입도 마찬가지였다. 영화사는 경쟁자가 없는 상태에서 특별한 보호를 받는 것에 만족하고 있었다. 관객들은 그런 한국영화를 외면했으며 외국영화를 딘 좋아했다. 게다가 스크린 쿼터제는 극장측에 일방적인 의무를 부과함으로서 제작과 유통을 적대적인 관계로 대립하게 만들었다. 경쟁력이 미약한 한국영화를 의무적으로 상영해야 하는 극장측은 정부의 정책에 지속적으로 반발했다. 스크린 쿼터제는 영화제작자, 극장 운영자, 관객 어느 누구도 만족시켜주지 못했다. 과도한 보호가 오히려 한국영화의 경쟁력을 약화시킨 것이다.

• Journal of Evidence-Based Herbal Medicine
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• 제2권2호
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• pp.33-38
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• 2009

Korean Ginseng has been recognized as a representative special product in Korea and over the world for a long time, since its quality is known to be superior to Chinese, North American Ginseng. However, the export volume of Korean Ginseng products has been diminishing since 1990 because the imports of low price Chinese Ginseng and the effective marketing policy on North American Ginseng. Therefore, this study is to suggest the competitiveness reinforcement strategies through analyses of the present state and transition of the international competitiveness in Korean Ginseng. This study conducts the comparative analysis of international competitive power of ginseng between Korea and other exporting countries. There are many kinds of saponin that are competitive from a quality profile. However, price competitiveness was very low. According to the result of analysis, this study suggest the competitiveness reinforcement strategies of Korean Ginseng as follows ; First, it is necessary to establish the ginseng plan for high-quality environmentally-friendly production. Second, Korean Ginseng producer should develop various consumer-oriented products according to purchasing power and taste of target market consumers. Third, export strategies must be established by finding out every importing country’s characteristics with regard its import, circulation and consumption of the Korean Ginseng. The use of this study is to forecast useful information to concerned organization for the future policies to the ginseng products in the international market.

• 디자인학연구
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• 제17권4호
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• pp.233-240
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• 2004

과학기술이 발달한 현대에 살고 있는 우리는 모두 ‘에너지’로 인해 편리한 생활을 영위하고 있다. 우리나라는 자원빈국으로 에너지원의 대부분을 해외에서 수입하고 있는 실정이며 계속되는 경제 성장과 국민 생활수준의 향상으로 에너지 소비는 더욱 증가하는 추세이다. 원자력은 우리나라처럼 에너지 부존자원이 빈약하고 에너지 수입 의존도가 높은 나라에서는 필수적인 에너지 자립형 대체에너지라고 한다. 하지만 원자력 발전이 위험 시설이라는 부정적인 인식과 방사능 처리 시설에 대한 불신 문제가 이슈화되면서 원자력 발전에 대한 대국민 교육, 홍보가 절실히 요구되고 있다. 이러한 문제를 환경 색채계획의 관점인 친인간, 친환경 색채계획을 목표로 접근하였으며 이를 통해 원자력에 대한 부정적 이미지를 최소화하고 친근하고 자연스러운 이미지를 부각시키며 대 국민 신뢰성 향상 및 청정 이미지 구축이 본 연구의 목표이다. 이를 위하여 일본의 원자력 발전소와 국내 발전소의 사례를 조사, 분석하고 발전소가 건설될 대상지를 방문하여 자연환경, 현황분석을 통하여 구체적인 색을 추출하였으며 지역 주민의 참여를 유도하고자 선물조사를 실시하여 색채계획에 반영하였다. 원자력 발전소의 환경 친화적 이미지구현을 통해 발전소의 안정성 및 친근한 발전소 이미지를 구축하며 원자력 발전에 대한 일반 국민들의 부정적인 인식을 계도하는데 적극적인 홍보 전략 및 수단으로 외관 환경색채계획을 시도하며 이를 통해 원전의 새로운 이미지 창출에 기여할 것으로 기대된다.

• Asian-Australasian Journal of Animal Sciences
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• 제24권11호
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• pp.1629-1636
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• 2011

Global pork markets are becoming more competitive, riding the wind of the bilateral free trade agreement. China is the world's largest pork producer with nearly 50% of the world's total production. China's fast growing economy has provided its people with higher purchasing power, resulting in a rapid expansion of the Chinese swine industry over the past decades. Worldwide, China consumes the greatest amount of pork and it is believed that this trend will continue. Japan is the world's largest pork importing country, even though it also produces a lot of pork. The Japanese swine industry encounters weighty obstacles in production costs and environmental limitations which result in reduced domestic supply and creates the situation in which Japan has to import a significant amount of pork for their consumption. South Korea is also a large buyer of pork, with a status greatly influenced by the struggle that the country has faced with Foot and Mouth Disease (FMD) which occurred in 2000, 2002 and 2010. High production costs, low production efficiency, and forced culling following the FMD outbreak resulted in the loss of many hog farming households in the country, reducing supply of domestic pork in the face of continued demand. Overall, pork production in these economically important countries can greatly impact the industry globally. The goal of this review paper is to describe pork production in China, Japan, and South Korea and discuss these countries' role in global pork export markets.

• Journal of Astronomy and Space Sciences
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• 제37권2호
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• pp.117-129
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• 2020

In a Satellite communication system, a link budget analysis is the detailed investigation of signal gains and losses moving through a channel from a sender to receiver. It inspects the fading of passed on data signal waves due to the process of spreading or propagation, including transmitter and receiver antenna gains, feeder cables, and related losses. The extent of the proposed tool is to make an effective, efficient, and user-friendly approach to calculate link budget analysis. It is also related to the satellite communication correlation framework by building up a graphical interface link analysis tool utilizing STK^® software with the interface of C# programming. It provides better kinds of graphical display techniques, exporting and importing data files, printing link information, access data, azimuth-elevation-range (AER), and simulation is also possible at once. The components of the link budget analysis tool include transmitter gain, effective isotropic radiated power (EIRP), free space loss, propagation loss, frequency Doppler shift, flux density, link margin, elevation plot, etc. This tool can be useful for amateur users (e.g., CubeSat developers in the universities) or nanosat developers who may not know about the RF communication system of the satellite and the orbital mechanics (e.g., orbit propagators) principle used in the satellite link analysis.

• 한국지진공학회논문집
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• 제20권4호
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• pp.269-276
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• 2016

Seismic performance evaluation of existing building usually needs much time and man power, especially in case of nonlinear analysis. Many data interaction steps for model transfer are needed and engineers should spend much time with simple works like data entry. Those time-consuming steps could be reduced by applying computerized and automated modules. In this study, computational platform for seismic performance evaluation was made with several computerized modules. StrAuto and floor load transfer module offers a path that can transfer most linear model data to nonlinear analysis model so that engineers can avoid a lot of repetitive work for input information for the nonlinear analysis model. And the new nonlinear property generator also helps to get the nonlinear data easily by importing data from structural design program. To evaluate the effect of developed modules on each stages, seismic performance evaluation of example building was carried out and the lead time was used for the quantitative evaluation.

• 한국재난정보학회 논문집
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• 제3권2호
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• pp.79-93
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• 2007

With international urgence of terror situation, many methods of terror techniques and skills are appearing and more intense and threatening terror is braking out not only in the air(plane), but also in the sea(ship). Korea is surrounded by 3 sides of sea and is a proud maritime nation that should advance to foreign country through the sea because South Korea and North Korea are confronting. Korea depend on the maritime transportation, 99.7% of exporting, importing material resources. Therefore, acquisition of the marine safety has the great affect on national security and economical life. On the high tension of situation about threat and possibility of maritime terroism, the potential ways of the improvement policy for counter-tactics against big maritime terror are the following. First, we should construct clear and well-organized network for accurate information about maritime terrorism Second, we should have the information of all domestic, foreign passenger's ships Third, national important facilities such as atomic energy plant, thermo-electric power plant, shipyard need policies to manage all emergency situation Fourth, government authorities should improve tactic abilitities by competing with support and budget inside of nation as well as outside of nation. To develop big maritime terror of our country, we will have to hold cooperative training & tactics contest of big maritime terror by cooperating educational industry organization with similar institute, improve the ability of members of big terror and acquire tactics information by excavating and exchanging a new technique through tactics seminar and public hearing.