• 연구논문집
• /
• 통권26호
• /
• pp.69-84
• /
• 1996

Regional INformation Network Center has constructed integrated VAN among the heterogeneous computers and core technical information database for machinery & materials-oriented enterprises in the Changwon & Masan Industrial complex. As the result of RINNet project, regional industrial companies can take advantage of getting core technical information for developing new technology and strengthening competitive power. Accordingly, RINNet(Regional INformation Network for science & technology) makes regional industrial companies possible to collect, acquire and use technical information rapidly and motivates regional society to form the rapid technical interchange system and cooperative system among industrial-educational-institutal complex.

• 한국정보디스플레이학회:학술대회논문집
• /
• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
• /
• pp.1575-1577
• /
• 2009

We have investigated the characteristics of transparent indium zinc oxide(IZO)/Ag/IZO multilayer electrode grown on polyethylene terephthalate (PET) substrates using a specially designed roll-to-roll sputtering system for use in flexible device are described. By the continuous R2R sputtering of the bottom IZO, Ag, and top IZO layers at room temperature, we were able to fabricate an IZO-Ag-IZO multilayer electrode with a sheet resistance of 6.15 ${\Omega}$/square, optical transmittance of 87.4 %, and figure of merit value of 42.03 10-3 ${\Omega}$-1. In addition, the IZO-Ag-IZO multilayer electrode exhibited superior flexibility to the RTR sputter grown single ITO electrode, due to the existence a ductile Ag layer between the IZO layers. This indicates that the RTR sputtered IZO-Ag-IZO multilayer is a promising flexible electrode that can substitute for the conventional single ITO electrode grown by bath type sputtering for use in low cost flexible device, due to its low resistance, high transparency, superior flexibility and fast preparation by the R2R process.

• 한국정보디스플레이학회:학술대회논문집
• /
• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
• /
• pp.883-885
• /
• 2009

We proposed intriguing and simple technique for fabricating flexible plastic liquid crystal (LC) devices. We made a preliminary version of a flexible LC display employing this concept, and we confirmed this technique was useful for the flexible LC display; the electro-optical reproducibility of the flexible LC device fabricated here was remarkably improved against external perturbation compared with the conventional one.

• 정보교육학회논문지
• /
• 제4권1호
• /
• pp.57-71
• /
• 2000

일반적으로 웹기반 수업이 전 교과에 걸쳐 전개되고 있는 바, 다양한 WBI 자료를 교과특질에 맞게 특성화하는 일 또한 간과해서는 안 되는 중요한 수업현장의 과제이다. 따라서 웹기반 지역화 학습자료 개발이라는 당면과제를 사회과에서 해결하고자 하는 시도로써 본 연구를 추진하게 되었다. 전국 각 지역마다 '사회탐구'라는 별책교재를 개발하여 Text위주의 지역화 학습을 지도하고 있는데 이를 개선하는 노력으로 WBI 지역화 자료개발 모델을 제시하였다. 이를 바탕으로 우리고장의 생활모습 등의 다양한 내용을 WBI 자료화하여 학교 홈페이지에 올려 활용 지도하였다. 그 결과 Text위주의 교재감각에서 벗어나 역동적인 멀티미디어 환경인 지역화 웹페이지를 만남으로서 학생들의 자기 주도적 학습 능력 및 문제해결 능력이 신장되었다.

• Mycobiology
• /
• 제43권1호
• /
• pp.57-62
• /
• 2015

${\beta}$-Glucosidase, which hydrolyzes cellobiose into two glucoses, plays an important role in the process of saccharification of the lignocellulosic biomass. In this study, we optimized the activity of ${\beta}$-glucosidase of brown-rot fungus Fomitopsis pinicola KCTC 6208 using the response surface methodology (RSM) with various concentrations of glucose, yeast extract and ascorbic acid, which are the most significant nutrients for activity of ${\beta}$-glucosidase. The highest activity of ${\beta}$-glucosidase was achieved 3.02% of glucose, 4.35% of yeast extract, and 7.41% ascorbic acid where ascorbic acid was most effective. The maximum activity of ${\beta}$-glucosidase predicted by the RSM was 15.34 U/mg, which was similar to the experimental value 14.90 U/mg at the 16th day of incubation. This optimized activity of ${\beta}$-glucosidase was 23.6 times higher than the preliminary activity value, 0.63 U/mg, and was also much higher than previous values reported in other fungi strains. Therefore, a simplified medium supplemented with a cheap vitamin source, such as ascorbic acid, could be a cost effective mean of increasing ${\beta}$-glucosidase activity.

• BMB Reports
• /
• 제49권10호
• /
• pp.548-553
• /
• 2016

Mesenchymal stem cells (MSCs) are widely used in cartilage tissue engineering to repair articular cartilage defects. However, hypertrophy of chondrocytes derived from MSCs might hinder the stabilization of hyaline cartilage. Thus, it is very important to find a suitable way to maintain the chondrogenic phenotype of chondrocytes. It has been reported that cordycepin has anti-inflammatory and anti-tumor functions. However, the role of cordycepin in chondrocyte hypertrophy remains unclear. Therefore, the objective of this study was to determine the effect of cordycepin on chondrogenesis and chondrocyte hypertrophy in MSCs and ATDC5 cells. Cordycepin upregulated chondrogenic markers including Sox9 and collagen type II while down-regulated hypertrophic markers including Runx2 and collagen type X. Further exploration showed that cordycepin promoted chondrogenesis through inhibiting Nrf2 while activating BMP signaling. Besides, cordycepin suppressed chondrocyte hypertrophy through PI3K/Bapx1 pathway and Notch signaling. Our results indicated cordycepin had the potential to maintain chondrocyte phenotype and reconstruct engineered cartilage.

• 농업과학연구
• /
• 제38권4호
• /
• pp.731-737
• /
• 2011

In the modern society, GIS-based decision support system has been used in evaluating environmental issues and changes due to spatial and temporal analysis capabilities of the GIS. However without proper manual of these systems, its desired goals could not be achieved. In this study, audio-visual SWAT tutorial system was developed to evaluate its effectives in learning the SWAT model. Learning effects was analyzed after in-class demonstration and survey. The survey was conducted for $3^{rd}$ grade students with/without audio-visual materials using 30 questionnaires, composed of 3 items for trend of respondent, 5 items for effects of audio-visual materials, and 12 items for effects of with/without manual in learning the model. For group without audio-visual manual, 2.98 out of 5 was obtained and 4.05 out of 5 was obtained for group with audio-visual manual, indicating higher content delivery with audio-visual learning effects. As shown in this study, the audio-visual learning material should be developed and used in various computer-based modeling system.

• 대한지구과학교육학회지
• /
• 제13권1호
• /
• pp.110-120
• /
• 2020

과학교과의 지질단원 학습은 야외학습과 지역의 자료를 활용한 수업이 학습 동기를 유발하고 학습에 긍정적인 영향을 미치는 것으로 알려졌다. 이 연구에서는 전라남도 자은도를 중심으로 과학교과 지질단원 학습을 위한 지역화 자료를 개발하고 그 사례를 제시하였다. 연구결과는 다음과 같다. 연구지역의 3개 장소(남진 선착장 부근, 양산 해변 지역, 둔장 해변 지역)를 중심으로 지질관련 지역화 자료를 개발하였다. 남진선착장 부근지역에는 해식애, 모래해안, 갯벌이 분포하고 있다. 해식애 노두에서는 퇴적암인 역암, 사암, 이암이 분포하며, 암석의 풍화 현상 그리고 끊어진 지층 및 휘어진 지층을 관찰할 수 있다. 양산 해변 지역에서는 약 1.5km 길이의 모래해안과 해식애가 발달하며 역암, 사암, 이암의 퇴적암과 화성암인 유문암 그리고 풍화에 의한 풍화혈이 발달한다. 둔장 해변 지역에선 약 2km 길이의 모래해안과 해식애 그리고 퇴적암과 다양한 지층이 분포하고 있다. 또한 해식동굴이 긴 시간의 침식으로 인해 변화해 가는 과정을 이해할 수 있는 시스택이 분포하고 있다. 3개의 장소에 분포하는 지형 및 지질현상은 자은도에 분포하는 독특한 현상으로 과학 교과서의 지질단원에 제시된 지질현상을 이해할 수 있는 지역화 자료로 활용할 수 있다. 이러한 지역화 자료는 사진으로 제작하여 교과서 사진과 비교하여 학습에 이용할 수 있으며 더 나아가 야외지질학습장으로서 활용할 만하다.

• 청정기술
• /
• 제3권2호
• /
• pp.13-24
• /
• 1997

The present paper aims to give basic information to establish zero emission material cycle including the minimization of emissions from industrial production processes and the area in regional scale. Strategies and methodologies to analyze emissions from the production processes and our human activities and to reduce those emissions by refining and/or replacing the unit process with the alternatives are introduced as well. Quantitative evaluation and management systems of any raw materials and the production process are from vie points of treatment are essential. Estabiishment of a process networking for the recycle of discharged non-products materials by the intra-process, trans-process and the trans-industries are proposed. Procedures and priorities to formulate industrial and regional zero emission system are proposed as well.

• 정보관리학회지
• /
• 제6권1호
• /
• pp.37-56
• /
• 1989

This study is a structural analysis of a multi-type and multi-level library network within the framework of a regional interlibrary loan (ILL) system. The study monitored to information network structure for resource sharing of academic and research library materials transmitted through the ILL. The local flow of academic and research information was measured by a survey of the filled ILL transactions by individual libraries in the Western 3Rs region. The major findings were as follows: 1) the regional ILL network showed less than half of participation of the total subject libraries, 2) existing structure surveyed was identified as a composite centralized network with three communication groups, 3) depending on the types of materials transacted, the structure were changed, 4) statewide and multi-state library cooperatives had direct interactions with some of the local libraries, 5) individual libraries participated in the ILL network more for periodicals than book materials, 6) academic libraries throughout the total six structure analyzed showed the highest percentage of participation.