• Title/Summary/Keyword: Application Fields

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A case study on the application of mobile technology for railway system (철도시스템에서의 모바일 기술 활용에 관한 사례연구)

  • Kim Young-Hoon
    • Proceedings of the KSR Conference
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    • 2003.05a
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    • pp.126-132
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    • 2003
  • Recently with the rapid development in mobile communication, the mobile phone are utilized in many fields of railway system within country and abroad and its use tends to increase continuously. In the railway system, the applicable realm is spreaded to the fields of railway signal communication, railway operating, track maintenance, reservation and information service, also its role is expected to increase. In this thesis, we are surveying the usage application of home and abroad mobile phone in railway system. Studying the present condition of mobile communication in railway system, we are viewing the application plan and the direction of development.

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A Linkage Analysis between Research and Industry in Basic Research (기초연구의 분야별 산업연계구조 분석)

  • 송충한
    • Journal of Korea Technology Innovation Society
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    • v.3 no.3
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    • pp.113-124
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    • 2000
  • In the knowledge based economy, it's important to know the place where the proper knowledge locates as well as to produce the creative knowledge. This paper intends to clear up the linkage structure between research fields and its application areas. 2,135 proposals submitted to Korea Science and Engineering Foundation were analyzed to investigate the relationship between research fields and application areas. The results are as follows; first, 51.8% of the basic research is devoted to the advancement of knowledge, second, 40.8% of that is applicable to the industry, third, 5.8% and 1.2% of that contributes to environment and social welfare.

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기초연구의 분야별 사업연계구조에 대한 분석

  • 송충한
    • Proceedings of the Korea Technology Innovation Society Conference
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    • 2000.11a
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    • pp.109-121
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    • 2000
  • In the knowledge based economy, it's important to know the place where the proper knowledge locates as well as to produce the creative knowledge. This paper intends to clear up the linkage structure between research fields and its application areas. 2,135 proposals submitted to Korea Science and Engineering Foundation were analyzed to investigate the relationship between research fields and application areas. The results are as follows; first, 51.8% of the basic research is devoted to the advancement of knowledge, second, 40.8% of that is applicable to the industry, third, 49.9% of engineering and 20.2% of natural science research is applicable to the industry.

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Nitrogen and Phosphorus Content Changes in Paddy Soil and Water As Affected by Organic Fertilizer Application

  • Lee, Kyung-Do;Lee, Kyeong-Bo;Gil, Geun-Hwan;Song, In-hong;Kang, Jong-Gook;Hwang, Seon-Woong
    • Korean Journal of Environmental Agriculture
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    • v.30 no.1
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    • pp.1-8
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    • 2011
  • BACKGROUND: With increasing public awareness to environment-friendly agriculture, many efforts have been run to develop organic farming technologies in Korea as of late 90s. The objective of this study was to investigate the effects of different organic farming practices on soil chemical properties and water quality in paddy fields. METHODS AND RESULTS: Total nitrogen (TN) and total phosphorus (TP) were monitored for a two-year period (2006 to 2007) from the study organic paddy fields located in Wan-ju, Jeonbuk Province in Korea. TN and TP of organic paddy water were gradually increased for 2~3 weeks after organic manure application and then gradually decreased afterward. The overall variation of TP in the paddy fields was much greater than that of TN. The phosphorus content in organic paddy field appeared to increase with the organic farming period. CONCLUSION(s): This indicates that long-term organic farming is likely to cause phosphorus accumulation in soils and increase vulnerability to rainfall runoff. Thus, appropriate phosphorus management needs to be implemented, particularly, to reduce excessive phosphorus supply owing to nitrogen-based determination of organic manure application amount.

Effects of Fertilizer Types on Pollutant Loadings from Rice Paddy Fields (비종에 따른 논에서의 배출부하량 영향평가)

  • Chang, Seung-Woo;Kang, Moon-Seong;Song, In-Hong;Jang, Jeong-Ryeol;Lee, Eun-Jeong;Park, Seung-Woo
    • Journal of The Korean Society of Agricultural Engineers
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    • v.53 no.6
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    • pp.111-119
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    • 2011
  • The main objective of this study was to evaluate the effects of control-release fertilizer (CRF) on pollutant loadings from a small watershed. The Baran watershed, 386 ha in size, was selected as the study site, and the AGNPS (Agricultural Non-point Source Pollution) model was used to evaluate the effects of fertilizer types. Digital maps of digital elevation (DEM), slope distribution, channel, flow direction, landuse, soil, and curve number were extracted from the study watershed. Model parameters related to hydrology and water quality were calibrated and validated by comparing model predictions with the observed data collected for 2 years (1999 to 2000). Calibration and validation resulted in $R^2$ values of 0.75-0.91 for all the water quality parameters. All the paddy fields (21.2 %) of the study watershed were sprayed by either CRF or NPK (standard fertilizer). In CRF application, total nitrogen (TN) load was 4.9% less than NPK application, however total phosphorus (TP) load was 0.7 % more than NPK application. In CRF application, considering only paddy fields in the study area, TN load was 38.7 % less than NPK application. Using CRF in paddy fields could be one of the ways to reduce pollutant loadings from agricultural watersheds, however, in order to confirm it, more researches about effects of using CRF are necessary.

Clinical Application of Three-Dimensional Printing Technology in Craniofacial Plastic Surgery

  • Choi, Jong Woo;Kim, Namkug
    • Archives of Plastic Surgery
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    • v.42 no.3
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    • pp.267-277
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    • 2015
  • Three-dimensional (3D) printing has been particularly widely adopted in medical fields. Application of the 3D printing technique has even been extended to bio-cell printing for 3D tissue/organ development, the creation of scaffolds for tissue engineering, and actual clinical application for various medical parts. Of various medical fields, craniofacial plastic surgery is one of areas that pioneered the use of the 3D printing concept. Rapid prototype technology was introduced in the 1990s to medicine via computer-aided design, computer-aided manufacturing. To investigate the current status of 3D printing technology and its clinical application, a systematic review of the literature was conducted. In addition, the benefits and possibilities of the clinical application of 3D printing in craniofacial surgery are reviewed, based on personal experiences with more than 500 craniofacial cases conducted using 3D printing tactile prototype models.

GENERATION OF MAGNETIC FIELDS BY TEMPERATURE GRADIENTS

  • OKABE NOBUHIRO;HATTORI MAKOTO
    • Journal of The Korean Astronomical Society
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    • v.37 no.5
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    • pp.547-551
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    • 2004
  • We showed that magnetic fields are generated in the plasma which have the temperature inhomogeneities. The mechanism is the same as the Weibel instability because the velocity distribution functions are at non-equilibrium and anisotropic under the temperature gradients. The growth timescale is much shorter than the dynamical time of structure formation. The coherence length of magnetic fields at the saturated time is much shorter than kpc scale and then, at nonlinear phase, become longer by inverse-cascade process. We report the application of our results to clusters of galaxies, not including hydrodynamic effects.

A Study on the Important Application Fields of the Smart Media (스마트미디어의 중요 응용분야에 대한 연구)

  • Park, Chun-Myoung
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.05a
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    • pp.513-514
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    • 2018
  • In this paper, we discuss the smart media tendency which is the hot issue of recently important Information Communication Technology(CIT). Also we discuss the important application fields, SNS(Social Network Service) of the smart media.

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