• Journal of the Korean association of regional geographers
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• v.11 no.5
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• pp.488-499
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• 2005

The trends of Chinese and Yanbian University's reform were studied in this work. Although the history of Chinese modem university education is short, and all Chinese Universities experienced same social problems, however, development of each university was different. Especially after 90's, with applying socialism market economy theory, Chinese university education have changed a lot. Main conclusions were summarized as follows. First, to exert university's self-determination, University management system was changed. More and more rights and freedoms of operating university were given to universities which were originally controlled by central and local government. With that, universities were cheered to develop extensively based on its ability. Second, efforts to fit market economy were observed. It reflects in all aspects, such as systems of university financing, operating, admission and graduation of students. Third, professor competition system was adopted to promote professors enthusiasm. Forth, to survival in hot competition among universities, differentiation policy was applied. In brief, it could be said that rapid developments of Chinese university education have achieved recently. However, problems such as universities are still under supervision of central and local government: expand of university scale rather than education quality was focused on: limit of investment to university: lack of legal protection for finical supporting: lack of university democratization were still remain. It was expected that these problems will be solved in future university reforms.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.11 no.4
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• pp.27-36
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• 2016

Venture companies, which can commercialize various kinds of new ideas and creating added value, are amid of great attention. Since most of venture companies in initial development stages cannot finance its capital sufficiently all by their own, investments from outside investors are key factor to their survival. However, they have lots of difficulties in financing from outside investors because of their typical uncertain but favorable investment characteristics. Moreover, even though they had successfully financed from outsiders, problems related to their stakeholders, such as interrupting in management and types of investments, cause contrary results to firms. Therefore there are various kinds of systems for startups like angels, venture capitals and governmental supports. Even so, investments and supports for venture companies are still not sufficient. 'Accelerator', which is a brand-new investment type started from Silicon Valley in United States during the mid 2000, is growing attention these-days. It mainly supports startups financially in the initial development stages, however, it also supports the firms by providing mentoring, education and networking services. On the other hand, difference between existing investment types and performance of the investment is still in controversy. Therefore this study compared investment behavior between accelerator and venture capital. As a result, we found that the difference in investment behavior of accelerators and venture capital.

• Korean Journal of Environment and Ecology
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• v.16 no.4
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• pp.457-464
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• 2003

A valley forest in Sangbuun area at Jirisan National Park was studied to investigate forest structure in relation to altitude and part of the slope. Forty-eight quadrats were set up in the valley forest along altitude of 726m to 1,090m and part of the slope, and vegetation analysis for the woody species in the tree and subtree layers were carried out. With increasing elevation belt, mean DBH, height and basal area of the trees in the tree layer increased while their density decreased. This trends may be caused by the disturbance which was relatively severe in the low elevation area. As elevation increased, the importance percentages of Fraxinus rhynchophylla, Quercus variabilis and Quercus mongolica increased while those of Styyax japonicus, Carpinus laxiflora and Pinus densiflora decreased. The importance percentages of Quercus variabilis and Pinus densiflora increased as going from lower part to upper part of the slope. However, the opposite trend was found for the importance percentages of Acer mono and Corlus heterophylla var. thunbergii. Number of species and species diversity decreased as increasing elevation and going from lower part to upper part of the slope. According to importance percentage and cluster analysis, the valley forest was classified into three forest communities of Quercus serrata-broad-leaved tree species community in lower part of the slope at low elevation belt, middle elevation belt and middle and upper parts of the slope at high elevation belt, Pinus dnsiflora-Quercus serrata community in middle and upper parts at low elevation belt, and Quercus mongolica-broad-leaved tree species community in lower part of the slope at high elevation belt and top area.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.10a
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• pp.47-47
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• 2019

미얀마 Indo-Burma 지역은 13,500종의 식물종이 분포하고 있는 생물다양성 핫스팟이다. 북부 산악지역에서 남부의 망그로브 지역에 이르는 다양한 특성의 생태계로 구성되어있다. 그러나, 풍부한 생물 다양성은 인간에 의해 인위적인 간섭, 개발, 모노크림 재배와 같은 지속적인 삼림 벌채로 위협 받고 있다. Dprovidedc와 Krupnick (2018년)은 123과 472종의 미얀마 약용식물을 학명, 영명, 미얀마 식물명 그리고 미얀마 현지에서 쓰이고 있는 약용식물의 활용 및 보존 상태를 종합적으로 정리했다. 이 중 약 13%가 보존 상태에 대한 평가를 받았으며 IUCN의 멸종 위기 종 목록(IUCN2017)에 등재되었다. 비록, 전국에 다양한 식물 및 생물 다양성이 분포되어 있지만, 미얀마는 여전히 지속 가능한 관리와 사용을 위한 인적자원과 시설이 부족하다. 국립수목원(KNA)은 2013년부터 미얀마 천연자원환경보전부(MINISTRY OF NATURAL RESOURCES AND ENVIRONMENTAL CONSERVATION, MONREC)와 미얀마 산림과학원(Forest Research Institute, FRI)과 함께 미얀마 보호지역 및 Saggaing 지역 내 식물 다양성 보존을 위한 공동 현장조사, 연구 및 출판 등의 협력사업을 진행하고 있다. 또한 국립수목원(KNA)는 약용으로 가치가 있는 미얀마 식물 생체를 수집, 현지외 보전 중이며 이중 65과 326종의 식물 생체를 국립수목원(KNA)에 있는 열대식물자원연구센터에 보존과 교육 목적으로 전시 중이다. 이 기증은 미얀마에서 식물생체를 국외로 반출한 첫 번째 사례이며 국립수목원(KNA)은 2008년 독일에서 열대식물을 기증받은 사례 다음으로 두 번째로 외국 정부의 공식적인 대량 식물 도입 사례이다. 도입한 식물 중 Santalum album L. 과 Amorphopallus paeoniifolius (Dennst.) Nicolson. 은 IUCN Red List of Threated Spiences (IUCN2017)에 취약(Vulnerable, VU), 관심필요(Least Concern, LC)로 분류되어 있다. 국립수목원 (KNA)는 2019년 6월 17일 개최된 "2019 아태지역 산림주간 및 28차 아태지역 산림위원회"에 참가하여 미얀마 도입식물 전시회를 개최 하였고, 국내 최초로 Amorphopallus paeoniifolius (Dennst.) Nicolson.의 Leaf Cycle을 타임랩스 촬영하여 국립수목원 웹진(10월 호) 과 YouTube에 연구성과를 홍보하고 있다. 또한 국립수목원 열대식물자원연구센터는 2,700여종의 미얀마, 라오스 등 무한한 가치를 지닌 열대식물의 수집 보전으로 기초 응용 연구기반을 구축하여 국민들에게 열대식물의 중요성과 잠재적인 자원가치를 알리는 역할을 하고 있다.

• The Journal of the Korea institute of electronic communication sciences
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• v.18 no.5
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• pp.737-746
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• 2023

As the core infrastructure to lead technical innovation for the fourth industrial revolution, economic value and utilizations of radiowaves are increased rapidly. The objectives of this study are to recognize the growing trend of radio stations that transmit information using radiowaves, a limited resource of the country, and to propose developed plans for the radio stations operation system in line with the changing radio technology and use environment. To be specific, the detailed implementation procedures and methods of the system were derived in accordance with the government's plan to convert the complete inspection of radio stations into a SDoC(Self Declaration of Conformity) by the telco. SDoC is a policy that grants autonomy and responsibility for radio waves interference management to existing telecom operator recognized as having radio stations operating capabilities. It has significance in that the function of radio stations inspection, which is a representative technical regulation, is efficiently distributed to the government and the private sector. This study has significance in providing reference for expediting deregulation in the radiowaves management policy.

• Journal of the Institute of Convergence Signal Processing
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• v.7 no.3
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• pp.143-148
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• 2006

There are need to manage the water quality to supply an safety to consumer through pipe and reservoir the drinking water that produced in a clean water reservoir. However, a management of water quality and monitoring in reservoir have never been performed. Recently, the government has enforced standards of water quality. However, we have a inferior technology of water quality as compared with one in USA, Japan, Germany, etc. In case of water quality inspection and analysis equipments, sensor technology is very important to improve the water quality inspection and to develop the analysis equipments. In this paper, we analyze a law and a regulation for management of drinking water quality, and propose the measurement standards of drinking water quality in pH, conductivity, residual chloride, turbidity and water temperature. Then, we analyze electrode sensors that interference within pH, conductivity, residual chloride in interference experiment.

• The Journal of the Korea Contents Association
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• v.17 no.1
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• pp.496-506
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• 2017

This study tried to examine the validity of the technical and institutional method to perform the purpose of public interest in terrestrial broadcasting. For this purpose, this study concentrated to the rate of direct reception of the terrestrial broadcasting that government and broadcasting company have offered since the digital transition. Results of analysis, it appeared that have not possibility of realization to set the direct receiving antenna and built-in Antenna for enhanced reception of the signal of the terrestrial broadcasting. Second, the MMS, if not enhanced the direct reception, was expected that repeated the retransmission through the pay broadcasting as the time of digital transition. Finally, the disaster broadcast was revealed that reduce the effectiveness of the UHD TV policy because of the mutual interference between frequencies and the incomplete solution of shadow area. According to these results, it is expected to be difficult for a while to perform the purpose of public interest in UHD TV.

• Journal of Advanced Marine Engineering and Technology
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• v.39 no.9
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• pp.929-934
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• 2015

Because of the recent rapid advances in the development of ships with a larger proportion of electrical and electronic equipment, The usable frequency spread spectrum on ships is global trend. Therefore, concerns have been raised regarding the possible hazardous health effects of electromagnetic fields radiating from electronic devices. Although studies and investments on electro-magnetic fields in terrestrial areas are being conducted, they are not applied to a ship. In this paper, we measured electromagnetic fields in ship propulsion systems, and we analyzed the measured values against Korean and international standards. While the measured results satisfied the Korean standard, the Italian standard was not met in the switchboard area. However, the measured values were close to meeting the Italian standard. Therefore, further studies should be conducted for performing a comparative analysis of data in order to specify a standard of electromagnetic fields in propulsion systems that can be applied in the construction of government infrastructures.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.9 no.2
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• pp.179-190
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• 1998

One of the most important topics of recent years is that a multimedia technology such as wireless ATM has been introduced in radio systems for video, voice and data transmission. A major problem in such systems is the occurrence of errors due to multipath fading or interference. To combat this problem, forward error correction (FEC) coding is commonly used as a means of eliminating these errors. This paper has analyzed theoretically the effect of fading to design effective wireless ATM system. The BER, CLR, and CER of wireless ATM system adopting FEC coding and diversity reception techniques have been derived in fading environment. Also, simulations of BER and CLR have been carried out and compared with the above theoretical results.

• Journal of Space Technology and Applications
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• v.1 no.2
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• pp.256-267
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• 2021

In this paper, the New Space characteristics and response of micro & small satellite, and space industrialization strategy using domestic technologies are described. Recently, micro & small satellites are developed worldwide, including Starlink, having the characteristics of low-cost, light-weight and satellite constellation. Therefore, it is necessary to prepare for the constellation operation by considering the use of Commercial Off-The-Shelf (COTS) parts, satellite weight, shape and mass production. In particular, it is necessary to develop Multi Input Multi Output (MIMO) technology in consideration of the frequency interference during constellation operation, and to prepare and make efforts to secure frequencies in the government. Among the commercial-grade memories of Samsung Electronics and SK Hynix, the space-grade memory field using radiation tolerant memory and the high reliable packaging and space environment test technology has potential as a space industrialization strategy.