• Strategy21
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• s.37
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• pp.144-176
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• 2015

In September 2013, President Park Geun-hye announced her controversial "Look North" policy, of which the most salient aspect is the "Eurasia Initiative". This comprises various proposals designed to overcome existing constraints by developing new markets and creating new economic partners in continental areas from which South Korea has been alienated since the end of World War II, and this dovetails nicely with China's One Belt, One Road Initiative. The concepts of the "Silk Road Rail Express (SRX)" and the "East Sea Rim Maritime Community (ESRMC)" have also been discussed. SRX is at present a purely symbolic railroad project intended to encourage individual, cultural, trade and diplomatic exchanges. ESRMC is a model for establishing an ad hoc community to promote regional economic cooperation around the East Sea. President Park's Eurasia Initiative will provide South Korean investment for the Northeast to complement Russian plans, like the "Northern Energy Road" being built by Gazprom, and Chinese plans, like the Chang-Ji-Tu Development Plan for the North Korean port of Rajin. China's trade, as well as its energy and food supplies, pass through the Strait of Malacca and the Indian Ocean, and are thus vulnerable to interdiction by India or the US. China is therefore trying to reduce its exposure geopolitical risk by establishing a network of corridors between the Belt and the Road to provide alternative paths. The "China-Pakistan Economic Corridor" and the "China-Myanmar Economic Corridor" provide such connections, and South Korea hopes that SRX and ESRMC can become part of a "China-South Korea Economic Corridor". This concept could do much to revitalize the underdeveloped northern provinces of China and Russia's Far East, not to mention North Korea. By linking up the Trans-Siberian Railway, the Trans-China Railway, the Trans-Mongolian Railway and the Trans-Korean Railway all these Asian countries will be connected to one another, and ultimately to Europe. An interim connection between China and South Korea using a rail-ferry has also been proposed.

• Korean Journal of Plant Taxonomy
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• v.52 no.2
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• pp.102-107
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• 2022

Rhododendron keiskei var. hypoglaucum (Ericaceae) was recently reported in Korea, with a disjunct distribution on the southern islands of the Korean Peninsula. Although chromosome numbers and ploidy variations are important traits in angiosperms, gaining a clear understanding the cytological features of Rhododendron has been hampered by the small size of its chromosomes. We herein report the chromosome number, karyotype structure, and genome size of R. keiskei var. hypoglaucum for the first time. The chromosome number of the investigated plants was 2n = 26 with x = 13 as the base chromosome number, which is the one of the frequently encountered base chromosome numbers in Rhododendron. The karyotype of R. keiskei var. hypoglaucum is composed of metacentric and submetacentric chromosomes similar in length, which ranged from 1.39 to 2.40 ㎛. The DNA 1C-value in all examined accessions was small, ranging from 0.63 to 0.65 pg, further supporting the stable genome size in Rhododendron. These comprehensive cytological results provide a framework for detailed molecular, cytogenetic, and phylogenomic analyses that can be used to interpret the slow species diversification rate in Rhododendron.

• 한국문화재보존과학회:학술대회논문집
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• 2006.11a
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• pp.60-65
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• 2006

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2009.11a
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• pp.157-157
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• 2009

다층카본나노튜브(MWCNT) 를 첨가한 전력케이블용 CNT 반도전 컴파운드를 용융혼합법을 사용하여 제조하였다. 카본나노튜브, 카본블랙, 분산제, 가교조제 함량변화에 따른 초고압 CNT 반도전 컴파운드의 특성을 조사하였다. 카본나노튜브 단독, 카본나노튜브와 전도성 카본블랙을 혼용함에 따른 상승효과, 분산제와 가교조제 사용에 따른 초고압 전력케이블용 CNT 반도전 컴파운드의 우수한 물성을 확인할 수 있었다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2004.11a
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• pp.375-380
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• 2004

This paper presents the basic quench protection idea for the HTS(High-Temperature Superconducting) cable. In Korea power system, the transfer capability of transmission line is limited by the voltage stability, and HTS cable could be one of the countermeasure to solve the transfer limit as its higher current capacity and lower impedance[1]. However, the quench characteristic of HTS cable makes HTS cable to loss its superconductivity, and therefore change the impedance of the line and power system operating condition dramatically. This pheonominum threats not only HTS cable safety but also power system security, therefore a proper protection scheme and security control counterplan have to be established before HTS cable implementation. In this paper, the quench characteristics of HTS cable for the fault current based on heat balance equation was established and a proper protection method by FCL(Fault Current Limiter) was suggested.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.132-134
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• 2012

우리 나라에서 해상 교통 및 선박의 통항 안전성의 평가를 위하여, 선박조종시뮬레이터 실험을 통해 얻어진 선박운동의 데이터와 조종자의 의견을 반영하여 검토하고 있는 것이 일반적인 수행 방법이다. 세부적인 기법으로는 선박의 해상시설물에 대한 접근도, 선체의 제어도 그리고 선박 조종자의 평가를 들 수 있다. 이 중에서 해양시설물에 대한 선박의 접근 및 선박의 제어도와 관련된 부분은 통계적으로 계산되어 그 기준이 명확한 측면이 있으나, 조종자의 의견에 의한 평가는 상대적으로 기준이 모호한 면이 있고 또한 조종자의 평가와 선박의 제어도와 관계에 대한 연구도 부족한 실정이다. 따라서 본 연구에서는 선박의 제어도와 조종자의 평가를 각각 기술적 운항만족도와 심리적 운항만족도로 정의하고, 그 관계를 알아 보기 위하여 퍼지 추론을 실시하였다. 이로부터 기술적 운항만족도와 심리적 운항만족도의 상관 관계를 정리하고, 그 관계가 높을수록 관련 평가의 신뢰성은 높을 것으로 생각하였다.

• Journal of the Korean Applied Science and Technology
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• v.22 no.1
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• pp.1-8
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• 2005

Chlorine-containing modified polyester polyols were synthesized by two-step condensation reactions. Intermediate was synthesized by the esterification of monochloroacetic acid with trimethylolpropane in the first step. Polycondensation of the intermediate (MCAOs), 1,4-butanediol, and trimethylolpropane with adipic acid was carried out. Two-component polyurethane (PU) coatings were prepared by blending MCAOs and IPDI-isocyanurate. There new flame-retardant coatings showed various properties comparable to other non-flame-retardant coatings. They were superior to flammable coatings from the experimental results showing rapid and 10 to 13 hours of pot-life. Coatings with 30wt% monochloroacetic acid was not flammable by the vertical flame retardancy test.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.2197-2201
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• 2008

우리나라의 수문학적 특성을 살펴보면 유로가 짧고 경사가 급하며, 하계에 연강우량의 2/3 이상이 집중하기 때문에 치수적으로 매우 불리한 조건에 처해 있다. 수문학적으로 연최대 유량 대 연최소 유량의 비인 하상계수(河狀係數)를 외국하천의 경우와 비교해 보면 우리나라 하천의 경우가 수십 배에 달해 매년 홍수피해에 노출되어 있음을 알 수 있다. 특히 필댐의 경우 월류에 매우 불안정하므로 홍수방어능력의 중요성은 더욱 커진다. 따라서 본 연구에서 홍수방어능력이 부족한 필댐을 통하여 그 원인과 보수 보강 대책에 대하여 다양한 방법으로 검토하고자 한다.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2010.06a
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• pp.75-75
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• 2010

기존 할로겐프리 제품은 PVC와 비교하여 유연성이 크게 떨어져 PVC 사용에 대한 규제가 강화되고 있음에도 불구하고, 이를 쉽게 대체하기 곤란하다는 문제점이 있다. 이에 할로겐프리 재료만 사용하여 고난연성, 예를 들면 UL 1581 에 따른 VW-1 규정을 충족하는 고난연성을 가지면서도 경도가 낮아(경도 70수준, Shore A) 재질의 유연성이 확보된 고분자 재료를 개발하는 것이 요구된다. 실험 결과로부터 인장강도 11[Mpa], 신장율 720[%], 가열후 인장강도 잔율 90[%], 가열후 신장잔율 88[%], 산소지수 38.0, 수직난연시험 합격, 경도(Shore A) 70, 백화현상이 나타나지 않는 등 우수한 특성을 보였다.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2008.10a
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• pp.133-134
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• 2008

A novel near infrared(NIR) absorbing dyes were synthesized by using bis-aldehyde formyl aromatic compounds and heteroaryl derivatives with the reactive methylene group. These dyes provided a range of the NIR wavelength region about 720 nm value. Also, the light absorbing properties of these dyes were investigated in our experiment results. In generally, these NIR colorants may be potential used for optical recording media, DNA sequencing probe and laser beam printings.