• 한국정보통신학회논문지
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• 제22권8호
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• pp.1041-1048
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• 2018

가트너(Gartner)의 Hype Cycle 모델은 기술의 성숙도, 수용도, 사업화 수준을 표현하기 위해 널리 활용되고 있다. Hype Cycle 모델에서 기술들은 5단계의 과정을 거치게 되는데 이는 1단계인 발생기로 시작하여, 2단계인 버블기, 3단계인 환멸기, 4단계인 계몽기를 거쳐 5단계인 안정기에 도달하게 된다. 많은 연구들에서 Hype Cycle을 활용하여 기술에 대한 미래 예측의 근거로 많이 활용되고 있지만 이에 대한 검증은 다소 부족한 부분이 있었다. 본 논문에서는 1995년부터 2017년까지의 부상하는 기술을 위한 Hype Cycle(Hype Cycle for Emerging Technologies)에 등장하는 기술들을 분석 하였다. 이를 통하여 최초 등장할 때 1단계가 아닌 단계로 등장한 기술들과 성숙단계가 역전되는 현상을 보인 기술들을 발견하였다. 또한, 1995년부터 2017년까지의 기술 중에서 1-5단계를 거친 기술이 한번도 없었다는 사실을 발견하였다.

• Journal of Plant Biotechnology
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• 제6권1호
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• pp.1-7
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• 2004

Forestry sector has witnessed some unprecedented events in the recent past both in terms of galloping biotechnological developments and heated environmental debates over risks associated with release of transgenic trees. Improvements in the in vitro propagation techniques has made it possible to develop tissue culture based plant regeneration protocols just for about any tree species. And with the inclusion of every new species within the realms of tissue culture technology, it becomes a candidate for genetic improvement through recombinant DNA technology, the so called genetic engineering. Poplars and their hybrids serve as the model tree species on which most of the genetic transformation work as been carried out. A lot of work has also gone in genetic transformation of fruit trees and trees of horticultural interests. Trees have been successfully transformed for traits ranging from reduction of length of juvenile phase to alteration of tree architecture to altering wood quality by lignin and cellulose modification. More-over trees have been genetically engineered successfully to combat various types of insect pests and pathogens causing diseases. But all these developments have ignited controversies over the possible benefits and risks associated with transgenic plantations by various environmental agencies and activists. Solutions to most of these concerns can be found out with more intensive prioritized research.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2003년도 하계학술대회 논문집 Vol.4 No.2
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• pp.636-640
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• 2003

As industrial technology was developed, necessity for small size motor was increased on various fields such as medical treatment and robotics. The motor should be simple structure, and it has easy process of manufacture to overcome the limit of miniaturization. So, "the windmill type ultrasonic motor" is enough to satisfy these conditions. In this paper, windmill type ultrasonic motor which was proposed by B.Koc and K.Uchino, was analyzed and fabricated with modified endcap shape. Displacements of arms of the proposed endcap were compared with the previous endcap, using the finite element analysis program (ANSYS). Better rotational characteristics was expected in proposed model as result of FEA. Experimentally, rotary motors of 3.5 [cm] diameter were fabricated, and the speed and torque of the motor were measured. As a result, speed and torque were changed in proportion to the electrical input voltages. And low efficiency which was different from an expectation was obtained in this motor. So, various problems should be improved for practical use.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2010년도 하계학술대회 논문집
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• pp.318-318
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• 2010

In this paper, we studied generating characteristic of cymbal type piezoelectric transducer according to change of cymbal cap. The transducer is composed of circular piezoelectric ceramic and two elastic bodies which are shaped as cymbal. Two elastic bodies are attached to upper and bottom of the ceramic. Principle of the transducer is to generate expanded displacement because vertical stress is transformed into horizontal stress by slope angle of elastic bodies. The transducer also has advantage of high durability by the angle of elastic bodies. In this study, each parameter was chosen, and then generating characteristics were analyzed by FEM program. The parameters were slope angle of cymbal cap (theta), cap height (h) and cap inner diameter(d). The model that had generating characteristic Of high voltage was chosen by results of the analysis. Besides, maximum vertical displacements according to change of vertical stress were analyzed by structural analysis in order to find out relation between the maximum vertical stress which can prevent from ceramic damage and conditions of each cap.

• 한국화재소방학회논문지
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• 제21권3호
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• pp.61-68
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• 2007

본 연구에서는 지하생활공간을 대상으로 풍속의 변화에 대한 축소모델 실험을 통하여 열유동 및 화재성상을 분석하였다. 풍속이 증가할수록 화재실의 온도상승 시간은 빨라지고, 실의 온도도 증가하였다. 그리고 풍속이 증가할수록 화재실의 개구부에서 최고온도를 나타내었다. 화재확산에 따른 열유동은 풍속이 증가할수록 와류확산을 촉진시켜 연기발생과 화염의 크기를 증가시키고, 인근실의 내부보다 통로에서 높은 온도분포를 나타내었다. 끝으로 지하생활공간의 화재시 열유동은 풍향과 풍속에 의해 화재확산이 결정되어지고 풍속이 증가할수록 온도증가와 감소는 빠르게 진행됨을 확인할 수 있었다.

• 통상정보연구
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• 제7권4호
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• pp.387-407
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• 2005

This paper is to study globalization motives and strategies of Japanese and Korean industries by analyzing the causes and patterns of foreign direct investment (FDI) of the firms of the two countries during the 1980s and 1990s. First we develop a FDI function from the profit maximizing model of firms. Then we use regression analysis to determine internally driving-out factors and externally-inducing factors. Japanese FDI strategy has gone through three different stages; from natural resource-seeking investment in the 1950s and 1960s to market-expansion investment in the 1970s and 1980s and to a combination of cost-reducing (low-cost labor-seeking) investment and market-penetrating investment in the 1990s. On the other hand, Korean FDI behavior has gone through four different stages; from the learning stage with small investments in the 1970s, to natural resource-seeking investment in the early and mid 1980s, to the growth stage in the late 1980s and the early 1990s, to the maturity stage of the mid and late 1990s. The last two stages were characterized by a combination of cost-reducing investment and market-seeking investment. As a late comer, Korea began its FDI two decades later than Japan, but caught up the patterns of Japanese FDI by the mid 1990s and is in a competing position with Japan. Our findings show that both Japanese FDI and Korean FDI in Asia and other developing countries tendto be in labor-intensive sectors where their firms are losing their comparative advantages at home. The main motive for FDI into these regions is low-cost resource seeking. On the other hand, both Japanese FDI and Korean FDI in the U.S. and Europe tend to be knowledge-intensive sectors where Japanese and Korean firms attempt to internalize transaction and information costs by globalizing its production. The main motive for FDI into these regions is market-seeking. Firms in both countries have increased their investments in Mexico and Western and Eastern Europe in order to penetrate large economic blocs such as the EU and NAFTA area. Korean firms are more aggressive in expanding into new and untested markets than are their counterpart in Japan. Evidence of this can be seen in the scarcity of Japanese FDI and abundance of Korean FDI in Eastern Europe and China.

• 한국경제지리학회지
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• 제17권1호
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• pp.147-159
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• 2014

본 연구는 2003년 11월부터 2013년 8월까지의 전국, 수도권, 비수도권, 강남, 강북지역 아파트 매매가격의 합리적 버블을 전체기간과 글로벌금융위기 전 후로 기간을 나누어 상태공간모형과 칼만필터를 이용해 추정하였다. 전체기간 중에 강남은 합리적 버블이 25.4%로 가장 높고 강북 21.3%, 수도권 20.1%, 전국 18.9%, 비수도권 14.3%로 나타났다. 글로벌 금융위기 이전에는 강남이 26.7% 강북 19.3%로 강남이 강북보다 약 7.4% 정도 버블이 높게 형성되어 있다. 이에 반해 글로벌 금융위기 이후에는 강남 13.2%, 강북 10.7%로 버블이 많이 붕괴되었으나 오히려 비수도권 지역은 이전기간 4.2%에서 이후기간 19.0%로 약 15% 상승을 하였다. 이는 강남, 강북을 포함한 수도권은 매매가격이 하락하고 임대료는 상승을 하였고 비수도권 지역은 공공기관 이전 등 각종 개발호재로 인해 매매가격이 상승한 것이 주요원인으로 생각된다.

• 분석과 대안
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• 제3권2호
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• pp.59-85
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• 2019

The Hong Kong's Anti-Ordinance Amendment Movement is the most serious radical social movement since the 1997 return, which has served as the promotion of the 2014 Occupy Central Movement and broken through the violence baseline. The movement came from a criminal case committed in Taiwan,which gave a good reason and motivation for the HK government to amend the Fugitive Offenders Ordinance. The HK government has responded to the protests by strictly limiting the legal scope and transfer procedure, even giving up the legislative motion. But the protests still say no and develop into the constantly violent activities. Many of the protests have committed the crimes in HK laws,part of whom have been arrested,prosecuted and under judicially judged. It is necessary for the offenders to be punished to protect the authority of rule of law in HK. Two different paths for HK have fought against each other since the 1997 return: one is the "democratic-welfare" path taken by the Pan-Democratic Camp, the other is the "Legal-development" path taken by the Pan-Establishment Camp. The second path shares some nuclear characteristics of the so-called The China Model mainly shaped from the 40-years Reforms and Openness. However, the HK people can't understand the China Model very well and show great fear and distrust on the judicial system of Mainland China. The foreign powers such as US and UK have illegally interfered the HK issues which are deemed to be the domestic affairs of China. The so-called Sino-UK Joint Declaration can't serve as the legal basis for the interference. Taiwan, as a part of China, also plays a negative role in this movement for its electoral and political interest. Up to now, the movement has gone down and the HK government has the legal capacity to solve the problems under the supports from the central government and the HK people. The HK people love its rule of law and order under the constitutional framework of One Country Two System. After the movement,One Country Two Systems will be go on, and the integrated development under the policies of the central government will be the main stream. However, the relevant problems exposed by this movement muse be checked and solved legally and strictly,especially concerning the social inequality and youth development.

• 한국콘텐츠학회논문지
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• 제11권4호
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• pp.361-377
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• 2011

본 연구는 변혁적 리더십의 선행변수, 성과변수 그리고 조절변수간의 통합적 관계를 실증적으로 분석하였다. 변혁적 리더십의 선행변수로는 자기 효능감과 외향성을 정하고, 조절변수로는 조직문화로 정하였다. 그리고 성과변수로는 최근에 기업에서 강조하고 있는 혁신행동으로 설정하였다. 이를 위하여 선행변수가 변혁적 리더십에 미치는 영향과 변혁적 리더십이 혁신행동에 어떠한 영향을 미치는지, 그리고 변혁적 리더십과 혁신행동의 관계를 위계지향과 성취지향 조직문화가 조절효과를 가지고 있는지를 알아보고자 하였다. 실증검증을 위하여 다양한 자료원을 통해 자료를 수집하였다. 최종 연구에 사용된 데이터는 조직 내 팀장급 리더 221명과 리더 각각의 하급자 2명으로 부터 얻은 설문지 442개 모두 221세트의 총 663개이다. 이 데이터를 통해 가설 검증을 위하여 공변량 구조분석(SEM)을 실시하였다. 가설을 검증한 결과, 리더의 자기효능감이 높아질수록 변혁적 리더십도 높아지는 것으로 나타났으나, 리더의 외향성은 변혁적 리더십에 유의한 영향을 미치는 것은 아닌 것으로 밝혀졌다. 그리고 변혁적 리더십은 혁신행동에 유의한 영향을 미치지만 위계 지향적 문화와 성취 지향적 문화가 변혁적 리더십과 혁신행동의 관계를 조절한다는 가설은 지지되지 않았다.

• 한국통신학회논문지
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• 제38C권12호
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• pp.1159-1169
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• 2013

국내기술을 적용하여 설계 및 제작한 디지털중계기 우주인증모델 개발은 개발과정중 사전에 예측하지 못한 다양한 시행착오를 겪었다. 특히 진공이라는 특수환경에 대한 열설계 경험 부족으로 인하여 1차 진행된 열진공 시험시 설계/조립/시험구성 오류사항들을 식별하게 되었고 중계기에 대한 성능검증을 성공적으로 수행할 수 없었기 때문에 사전에 계획되지 않은 2차 열진공 시험을 수행하게 되었다. 본 논문은 디지털 중계기의 1차 열진공 시험 시 발생한 오류사항에 대한 분석과 2차 시험시 적용한 해결방법과 그 결과를 제시한다. 이를 통하여 본 과제의 2차 우주인증모델 개발시 열적 성능이 개선된 디지털중계기를 얻을 수 있을 것이다. 또한 추후 국내외에서 개발될 중계기 탑제체의 열진공 시험시 참고자료로서 활용될 수 있을 것이다.