• Journal of the Korean Magnetics Society
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• v.6 no.5
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• pp.340-352
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• 1996

최근 급속도로 발전하고 있는 첨단산업의 배경에는 반도체를 중심으로 한 디지틀 전자기술(Electronics)이 자리잡고 있음은 주지의 사실이다. 이러한 전자 및 정보기술 이후, 즉 포스트 일렉트로닉스(Post-electronics)시대를 겨냥한 새로운 돌파구로서 기대되고 있는 21세기 기술의 주도권을 잡을 기술이 어떤 기술이 될 것인가는 매우 흥미로운 질문이다. 현재 시점에서 볼 때 반도체를 매개로 한 20세기 정보전자혁명을 대신할 새로운 기술혁명으로 대두하고 있는것이 마이크로혁명이며, 이 마이크로혁명을 주도할 기술로서 세계적인 주목을 끌고 있는 기술중의 하나가 초소형 미소기계, 즉 마이크로머신(Micromachine)이다. 현재 '반도체를 능가할 수 있는 차세대 메카트로닉스(Mechatronics)혁명'이라 평가되고 있는 마이크로머신 기술은 과거 꿈으로나 가능하던 공상과학의 세계를 현실로 만들어 주는 경이로운 기술이며, 나아가 분자기술을 응용한 생체로봇, 생체컴퓨터 등 이른바 나노기술(Nano-technology)의 신세계로 향하는 입구라 할 수 있다. 이기술은 기계공학, 전자기술은 물론 물리학, 생물학, 화학, 재료공학 등 광범위한 분야의 기술이 총망라되어야 개발이 가능하며, 그 실현을 위해서는 매크로 한 세계와는 판이하게 다른 물리현상 등 마이크로한 세계의 특수성을 이해해야 함은 물론 에너지공급, 재료, 데이타통신, 구조조립 등 많은 기술적 난제를 극복해야 한다. 마이크로머신기술은 현재 일부 전문가를 제외하고는 일반은 물론 자기학분야의 연구자들에게도 별로 익숙하지 않은 분야이다. 그러나 이 기술의 미래 영향력이나 가능성, 필요성을 고려할 때 이제는 자기분야 연구자들도 이 분야에 관심을 가져야 할 것으로 생각하여 연구자들도 이 분야에 관심을 가져햐 할 것으로 생각하여 본고에서는 먼저 최근 마이크로머신의 기술동향을 개괄적으로 소개하고, 다음으로 마이크로머신에 사용되는 주요 재료들과 자성재료가 주도적인 기능을 하는 자기마이크로머신(Magnetic Micro-machine)에 사용되는 자성재료들에 관해 소개하고자 한다.

• Proceedings of the SAREK Conference
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• 2008.11a
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• pp.578-583
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• 2008

Korea which has change of clear season is using unique heater by the name of On-dol being invented since ancient times. Floor-heating device has no radiator, and generates no noise and dust. It can obtain satisfied heating sense than other heating system in low room temperature. And also it is a pleasant system that equals bottom and top temperature in a room. The purpose of this study is to develop the Floor-heating device using pulsating heat pipe. It propose floor-heating device using pulsating heat pipe of the dry process which alternative polyethylene pipe(low XL pipe) that is used widely to existent floor heating system and produce pilot Experiment and analyzed operation condition and performance of most suitable. In this study, main purpose is to develop floor-heating system using pulsating heat pipe by finding an optimum working condition according to changing ratio and evaluating a performance.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.10a
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• pp.261-263
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• 2017

Future science fiction science film science fiction film can easily see the appearance of the futuristic inquiry. Even if a person does not open the door by force, the door is opened and closed by the system. Even now, such a door can be found easily. However, in the past, people who have not been able to perceive people have been used only in public places such as department stores and marts, where there are many people who are inundated. However, a lot of researches are being done now, and we are pursuing convenience in everyday life by integrating the image processing technology that has been developed and developed many times, by implementing the automatic door which is not infringed by the personal life and is impossible for anyone to access.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.383-383
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• 2017

간척지는 바다와 접하는 하구언, 개벌로 이루어진 해안 등을 농공상업용지로 개간한 토지로서 간척지 이용에 있어 가장 우선적으로 용수공급 방안 수립이 고려되어야 한다. 해안유출지하수(submarine groundwater discharge)는 지하수 담수체가 존재하는 마지막 장소로 염해가 없는 청정수질 용수이다. 해안유출지하수 발생 구간을 탐지하기 위해 실측자료의 시공간적 한계를 극복할 수 있는 인공위성 영상을 활용한 원격탐사 기법을 이용하여 광역규모의 다양한 자료를 이용하고자 한다. MODIS (Moderate-Resolution Imaging Spectroradiometer)는 지구 생물권 활동에 관한 자료를 제공하는 미항공우주국 Terra EOS (Earth Observation system)위성의 주센서로 해양, 육상과 대기 분야에 적용이 가능한 다목적 센서이다. MODIS는 36개의 밴드를 이용하여 대기, 지표, 해양 관련 다양한 정보들을 제공하고 있다. 본 연구에서는 간척지의 효율적인 용수공급을 위한 해안유출지하수의 최적 개발 및 이용을 위해 MODIS MOD11 product 지표면온도(Land Surface Temperature; LST), MODIS MOD13 product 식생지수(Normalized Difference Vegetation Index; NDVI), 기상청의 지중온도와 실측자료를 이용하여 새만금 간척지를 대상으로 해안유출지하수 발생 구간을 탐지하고자 한다.

• Journal of Fisheries and Marine Sciences Education
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• v.16 no.2
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• pp.210-217
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• 2004

Cooling technology has been a vital prerequisite for the rapid, if not explosive, growth of the electronic equipment industry. This has been especially true during the last 20 years with the advent of intergrated circuit chips and their applications in computers and related electronic products. The purpose of this study is to develop a telecommunication equipment cooling system using a thermoelectric module combined with cooling fan. Thermoelectric module is a device that can perform cooling only by input of electric power. In the present study, the cooling package using the thermoeletric module has been developed to improve the thermal performance. The cooling characteristics of the electronic chip was placed into the subrack and it can be rapidly assembled or disassembled in the equipment rack. As a preliminary experiment, the cooling performances between a conventional way using a cooling fin and a proposed method applying the thermoelectric module was comosed and analyzyed. The cooling performance at a simulated electronic component packaging a thermomodule operated well.

• TTA Journal
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• s.162
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• pp.8-15
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• 2015

실감형 콘텐츠는 정부가 발표한 미래성장동력에도 포함될 정도로 정부와 산업계의 뜨거운 관심을 받고 있는 분야입니다. 사실 실감형 콘텐츠란 하나의 기술 분야를 말한다기 보다는 인간의 감각 기관과 인지 능력을 자극하여 실제와 유사한 경험 및 감성을 느낄 수 있게 해주는 유형의 콘텐츠를 통칭하는 것입니다. 그래서 지금까지 경험한 평면적인 디지털 콘텐츠나 3D 콘텐츠보다 더 몰입감 있고, 신기하고, 새롭고, 재미있고, 기대되는 콘텐츠라고 할 수 있지요. 2000년대 들어 우리는 이미 공상과학 영화를 통해 실감형 콘텐츠의 모습이 어떤 것인지 간접적으로 경험해 왔고, 그러한 기술들이 최근에 콘텐츠의 모습으로 완성되면서 실제적인 경험을 하고 있습니다. 하지만 더 흥분되는 사실은 지금 우리가 경험하는 것은 아주 일부분의 맛보기일 뿐, 앞으로 소개될 콘텐츠들이 제공할 새로운 경험은 더 압권이 되겠지요. 최근 정부와 산학연의 실감형 콘텐츠 기술 개발은 많은 제약과 어려움에도 불구하고 매우 적극적으로 추진되고 있습니다. 국제 표준화 기구에서 치열하게 추진되는 표준 개발에도 국내 전문가들이 적극적으로 대응하고 있습니다. 이 특집에서는 실감형 콘텐츠에 대한 개념과 트렌드를 전문가 인터뷰를 통해 들어 보고, 실감형 콘텐츠를 구성하는 여러 가지 기술 중에서도 소비자들의 기대와 눈높이를 맞춰줄만 한 새롭고 기대를 모으는 것들을 살펴보고자 합니다. 앞으로 우리는 입체 공간에서 1인칭 시점으로 얼마나 실감나게 콘텐츠 속으로 빨려들어 갈 수 있을까요? 지금까지 경험한 콘텐츠 조작은 얼마나 새로워질까요? 내가 필요할 때 딱 맞는 콘텐츠를 바로 이용할 수는 있을까요? 우리가 이렇게 새로운 것으로 즐거울 때 혹시 소외되는 사람들이 있지는 않을까요? 분명 있겠지요. 그렇다면 어떻게 우리는 정보격차를 극복할 수 있을까요? 이러한 물음에 대한 전문가들의 의견을 들어보시기 바랍니다.

• Journal of Digital Policy
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• v.2 no.1
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• pp.9-19
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• 2023

ESG is a kind of financial data that pays more attention to corporate environment, social responsibility and corporate governance. This study explores the relationship between ESG and corporate sustainable development through empirical analysis. This study uses the regression method of fixed effects to conduct empirical research on the data of China's A-share listed companies from 2015 to 2020. The research results show that: good ESG performance can promote the sustainable development of enterprises. At the same time, the higher the attention, the better the ESG performance can promote the sustainable development of enterprises. This study enriches the related research on ESG and has certain reference value for promoting the sustainable development of enterprises.

• Korean Journal of Plant Taxonomy
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• v.37 no.2
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• pp.87-108
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• 2007

The pollen morphology of 31 taxa, representing all woody species from 12 genera of Fabaceae in Korea, was examined by light microscope and scanning electron microscope. The pollen grains were monad and prolate spheroidal or rarely subprolate in equatorial view. The pollen grain aperture was trizonocolporate or rarely trizonooperculate, which does not occur in the other families of Fabales in Korea. The exine showed a great variety of sculpture pattern, i.e. psilate, microperforate, densely microperforate, perforate, polygonal perforate, macroperforate, macroperforate with granules in holes, polygonal macroperforate, verrucate with pitted perforate striae, verrucate-perforate, granulate, rugulate, reticulate or refined reticulate. The pollen morphological data supported the idea that the genera Echinosophora and Sophora were congeneric. Caragana (Galegeae) was quite close to the Sophora group (Maackia, Sophora and Echinosophora) of the Sophoreae in each measured pollen parameter and exine sculpture pattern. Eleven genera of Fabaceae were recognized based on differences in aperture type, pollen grain shape and exine pattern, and a generic pollen key of the woody Fabaceae in Korea was developed. A key to pollen types of Lespedeza was also suggested. The examined taxa of Coronilla and Wisteria were recognized by their exine patterns.

• Archives of design research
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• v.13 no.4
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• pp.213-223
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• 2000

Computer automation, developed into a major element of modern industry, has also brought to great change in textile design field. Traditional textile designers have been created patterns by free hand drawing with brush. The modern textile designers create and present, on the other hand, printed or woven designs much more utilizing extensively the computer cad as design tool, creating various designs and colors as well as reducing the creative process. Vine pattern the worldwide known is not a pattern simplified from a specific plant but it is rather a plant imaginative pattern that has been developed from a winter plant found in ancient Egypt. Vine patterns express gorgeous curve lines, which are simple but decorative by connecting flowers or leaves with stems. These vine patterns have also been widely used for their decorative arts in Korea since early times because they were believe to a favorable auspice pattern symbolizing a long-life and fertility. In this study, the possibility of developing various designs is explored and presented by utilizing the motif of vine pattern in CAD program.

• Journal of Physiology & Pathology in Korean Medicine
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• v.27 no.2
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• pp.212-224
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• 2013

This study intends to clarify how Sayeok-tang(here in after reffered to SYT) affect C57BL/10 mice whose osteoarthritis was induced by papain. Osteoarthritis was induced by injecting papain in the knee joint of 3 groups(n=6) of mice. Normal group was non-treatment group and was not injected papain, whereas control mice were orally administered with $200{\mu}{\ell}$ of physiological saline. Positive comparison group was medicated with 100 mg/kg of Joins$^{(R)}$ mixed with $200{\mu}{\ell}$ of physiological saline. Experimental group was medicated with 400 mg/kg of SYT mixed with $200{\mu}{\ell}$ of physiological saline. Both Positive and experimental comparison groups were orally medicated once per day for 4 weeks. After the experiment, the functions of liver and kidney, inflammation cytokine values within serum, degree of revelation for inflammation cytokine genes, immune cells within blood, metabolism of arachidonic acid and amount of cartilage were measured and histopathological changes in the knee joint structures were observed. As results, SYT had no significant effect on the liver and kidney functions. Interleukin-$1{\beta}$(IL-$1{\beta}$), interleukin-6(IL-6), monocyte chemo attractant protein-1(MCP-1) and tumor necrosis factor-${\alpha}$(TNF-${\alpha}$) were significantly decreased. Inflammation cytokines in joints were all significantly decreased. Prostaglandin $E_2(PGE_2)$, thromboxane $B_2(TXB_2)$ were significantly decreased. Destruction of cartilage on micro computed tomography(CT)-arthrography was meaningfully decreased. In terms of histopathology, infiltration of inflammation, proliferation of synovial membrane, subsidence of cartilage and bone due to penetration of excessive formation of synovial cell and destruction of cartilage were small. Based on all results mentioned above, Sayeok-tang(SYT) is believed to be meaningful for suppressing the progress of osteoarthritis and its treatments because of its anti-inflammatory effects and alleviation of pain with histopathological effective efficacy.