國民學校 氣象敎材의 內容構成과 그 展開에 관한 考察(Ⅱ) : 단원 「대기와 물의 순환」을 중심으로

김재경 大邱敎育大學校 科學敎育硏究所 1980 과학·수학교육연구 Vol.5 No.-

Acer negundo와 Acer saccharium의 크라프트 펄프化에 關한 硏究

金在慶 진주산업대학교 1978 論文集 Vol.16 No.-

本試驗은 네군도 단풍나무材, 은단풍나무材를 供試原料로 하여 크라프트 펄프化 適性을 究明하기 위하여 剝皮칲에 對하여 活性알카리 12, 15, 18 및 21%에서 크라프트 펄프化 特性을 調性을 調査하였으며, 그 結果를 要約하면 다음과 같다. 1. 네군도단풍나무材의 비중은 0.55, 纖維長의 範圍는 0.624∼0.982㎜ (平均 0.794㎜) 纖維幅이 23.2μ이였고, 은단풍나무材의 비중은 0.57 纖維長의 範圍는 0.679∼1.028㎜ (平均 0.831㎜) 纖維幅이 25.7μ이였다. 2. 活性알카리濃度의 增加에 따라 네군도단풍나무, 은단풍나무 다같이 펄프의 收率이 減少하였다. 3. 活性알카리濃度 15%에서 最高의 精選收率이 나타났다. 4. 活性알카리濃度 15%線에서 펄프쉬트의 强度가 가장 크게 나타났다. 5. 펄프쉬트의 强度는 은단풍나무가 네군도단풍나무 보다 높았다. 6. 높은 白色度를 要求하지 않은 産業 用紙類에는 利用可能하다고 생각된다. This investigation was performed to examine the quality of kraft pulping with the barked chips of Acer negundo and Acer saccharium in 12, 15, 18 and 21% of active alkali. The results obtained by the examination of some of their Kraft pulping characteristics are summarized as follows: 1. The specific gravity of Acer negundo was 0.55, the fiber length from 0.624 to 0.982㎜ (averaging 0.794㎜), the fiber width 23.2μ; and the specific gravity of Acer saccharium was 0.57, the fiber length from 0.678 to 1.028㎜ (averaging 0.831㎜), the fiber width 25.7μ. 2. As the concentration of active alkali increased, the pulp yield of both Acer negundo and Acer saccharium decreased. 3. The screened yield was highest in 15% of the active alkali concentration. 4. The strength of the pulp sheets was highest in the 15% level of the active alkali concentration. 5. The strength of the pulp sheets of Acer saccharium was higher than that of Acer negundo. 6. This is expected to be utilized as the industrial paper-boards which are not required to be highly bright in white color.

강인철의『한국천주교회의 쇄신을 위한 사회학적 성찰』

김재경 우리신학연구소 2007 우리신학 Vol.6 No.-

한국산 개나리속의 해부학적 성질에 관한 연구

김재경,홍병화 한국목재공학회 1984 목재공학 Vol.12 No.4

These experiments were carried out to investigate anatomical properties of Forsythia in Korea. The results obtained were summarized as follows: It was estimated that the vessel of cross section was almost simple pore and multiple pores which were compounded two or three units were showed sometimes and arrangement of vessel were ring porous wood. In the mean length of vessel, Forsythia koreana was ranged 539.98 ±154.71μ and Forsythia ovata 602.22 ± 157.38μ and Forsythia nakaii T. Lee 465.50 ±83.02μ. In the mean length of fiber wood, Forsythia koreana 387.40 ± 68.23μ, and Forsythia ovata was 533.90 ± 106.77μ and Forsythia nakaii T. Lee was 482.40 ± 72.33μ. The type of Ray parenchyma was heterogeneous ray I tissue. The mean length of procumbent ray cell in the radial section was 42.14 ± 8.30μ and that of rectangle type in up right ray cell was 45.76 ± 7.19μ and that of square type was 26.66 ± 2.99μ. The mean height of ray parenchyma in the tangential section was 174.80 ± 37.51μ and the width of ray parenchyma was 17.25 ± 3.59u and the mean number of ray parenchyma was 14 ± 3.

Pyridine을 함유하는 플로렌계 공중합체의 발광특성

김재경,유재웅,홍재민,김동영,조현남,김정엽 한국고분자학회 1999 한국고분자학회 학술대회 연구논문 초록집 Vol.24 No.2

플로렌계 고분자의 전기발광소자 특성향상에 관한 연구

김재경,김영철,김동영,조현남,김정엽 한국고분자학회 1999 한국고분자학회 학술대회 연구논문 초록집 Vol.24 No.2

한국의 그린 비즈니스/IT 실태분석을 통한 추진전략 우선순위 도출에 관한 연구

김재경,최주철,최일영 한국경영정보학회 2010 Asia Pacific Journal of Information Systems Vol.20 No.3

Recently, the CO2 emission and energy consumption have become critical global issues to decide the future of nations. Especially, the spread of IT products and the increased use of internet and web applications result in the energy consumption and CO2 emission of IT industry though information technologies drive global economic growth. EU, the United States, Japan and other developed countries are using IT related environmental regulations such as WEEE(Waste Electrical and Electronic Equipment), RoHS(Restriction of the use of Certain Hazardous Substance), REACH(Registration, Evaluation, Authorization and Restriction of CHemicals) and EuP(Energy using Product), and have established systematic green business/IT strategies to enhance the competitiveness of IT industry. For example, the Japan government proposed the “Green IT initiative” for being compatible with economic growth and environmental protection. Not only energy saving technologies but energy saving systems have been developed for accomplishing sustainable development. Korea’s CO2 emission and energy consumption continuously have grown at comparatively high rates. They are related to its industrial structure depending on high energy-consuming industries such as iron and steel Industry, automotive industry, shipbuilding industry, semiconductor industry, and so on. In particular, export proportion of IT manufacturing is quite high in Korea. For example, the global market share of the semiconductor such as DRAM was about 80% in 2008. Accordingly, Korea needs to establish a systematic strategy to respond to the global environmental regulations and to maintain competitiveness in the IT industry. However, green competitiveness of Korea ranked 11th among 15 major countries and R&D budget for green technology is not large enough to develop energy-saving technologies for infrastructure and value chain of low-carbon society though that grows at high rates. Moreover, there are no concrete action plans in Korea. This research aims to deduce the priorities of the Korean green business/IT strategies to use multi attribute weighted average method. We selected a panel of 19 experts who work at the green business related firms such as HP, IBM, Fujitsu and so on, and selected six assessment indices such as the urgency of the technology development, the technology gap between Korea and the developed countries, the effect of import substitution, the spillover effect of technology, the market growth, and the export potential of the package or stand-alone products by existing literature review. We submitted questionnaires at approximately weekly intervals to them for priorities of the green business/IT strategies. The strategies broadly classify as follows. The first strategy which consists of the green business/IT policy and standardization, process and performance management and IT industry and legislative alignment relates to government's role in the green economy. The second strategy relates to IT to support environment sustainability such as the travel and ways of working management, printer output and recycling, intelligent building, printer rationalization and collaboration and connectivity. The last strategy relates to green IT systems, services and usage such as the data center consolidation and energy management, hardware recycle decommission, server and storage virtualization, device power management, and service supplier management. All the questionnaires were assessed via a five-point Likert scale ranging from “very little” to “very large.”Our findings show that the IT to support environment sustainability is prior to the other strategies. In detail, the green business /IT policy and standardization is the most important in the government’s role. The strategies of intelligent building and the travel and ways of working management are prior to the others for supporting environment sustainability. Finally, the strategies for the data center consolidation and e...

함께 나누는 이야기-바른 제자?

김재경 우리신학연구소 2000 갈라진 시대의 기쁜소식 Vol.- No.451

공적연금기금의 투자와 세대간 형평성

김재경 關東大學校 社會科學硏究所 2000 社會科學論叢 Vol.5 No.1

新羅 佛敎와 天神信仰

金在庚 慶一大學校 1996 論文集 Vol.13 No.1