• Proceedings of the Korean Ceranic Society Conference
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• 2002.10a
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• pp.15.1-15
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• 2002

• The Bulletin of The Korean Astronomical Society
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• v.31 no.2
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• pp.30.2-30.2
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• 2006

• Proceedings of the KIEE Conference
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• 1987.07a
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• pp.30-33
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• 1987

• Proceedings of the KIEE Conference
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• 1987.07a
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• pp.45-46
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• 1987

• Journal of the Institute of Electronics and Information Engineers
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• v.53 no.6
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• pp.146-151
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• 2016

In this paper, we present a method for estimating the ratio of CPA distance to velocity of underwater target using target bearing information in CPA situation. This ratio can be estimated by previous research which is Envelope CPA using proximity sensor but it has low performance if the target is close to receiver sensor or bigger interference caused by multi-path effects. Therefore we propose a Bearing CPA technique using a target bearing information as a way to overcome.

• 한국생물공학회:학술대회논문집
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• 2005.04a
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• pp.566-569
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• 2005

The extracellular polysaccharide...(EPS) has been used in a wide variety of industrial applications because of gel formation, emulsion stability, control of the surface tension, water absorption and film formation etc. In this study, inhibitory activity on tyrosinase and inhibitory activity on angiotensin converting enzyme...(ACE) are determined. UV adsorption wavelength, beads formation of EPS were investigated. In the result, in 1%(w/v) EPS concentration, EPS had inhibitory activity of 71.8% on tyrosinase and inhibitory activity of 61.5% on angiotensin converting enzyme in 1.5% EPS concentration. Adsorption wavelength of EPS was UV-B,C . Beads based on EPS were prepared by w/o emulsion method and the shape of EPS beads observed by SEM was spherical and uniform.

• The Korean Journal of Ceramics
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• v.5 no.3
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• pp.250-254
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• 1999

Synthesis of the spinel $LiMn_2O_4$ by emulsion method was investigated. $LiOH.H_2O \;and \;Mn(NO_3)_2.6H_2O$ were used as starting materials to prepare mixed aqueous solution (0.5 mol/$\ell$ for the $LiMn_2O_4$). Kerosene, paraffin oil and span 80 were used for organic phase. The aqueous solutioin and organic phase were mixed in the ratio of 2:1 and emulsified at the speed of 4000 rpm for 5 min. The prepared emulsions were dropped into the petroleum heated at $170^{\circ}C$ to evaporate water in the silicon oil bath, dried at $120^{\circ}C$ in the oven the remove petroleum and calcined at temperature ranges from 600 to $900^{\circ}C$ for 48 hrs. The characteristics of powders were investigated by XRD, SEM, BET and electrochemical properties of synthesized cathode materials were measured with Galvanostatic system. $Li_{1.05}Mn_2O_4$ calcined at $800^{\circ}C$ for 48 hrs showed initial discharge capacity of 125.9mAH/g.

• Korean Journal of Soil Science and Fertilizer
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• v.1 no.1
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• pp.125-128
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• 1968

The effect of number of leaf after heading time on the growth of residual part and translocation of carbohydrates were investigated with water culture condition. Mutual shading and root rot were prevented. The results may be summerized as follows; 1. The ratio of ripened grain in the plot of no-leaf, flag leaf, two-leaf(flag and 2nd leaf) and three-leaf (flag, 2nd and 3rd leaf) was 38.8, 74.7, 83.9 and 87.0% respectively. The thousand grain weight was 21.3g, as the lowest value in no-leaf plot and was 28.7g in all other plots. 2. The accumulation of carbohydrate translocated in culm was increased by increment of leave-cutting, whereas the weight of culm was decreased. 3. It was suggested that healthy flag and 2nd leaf can keep the ratio of ripened grain around 80 percent.

• Proceedings of the KSR Conference
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• 2011.05a
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• pp.470-475
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• 2011

The objective of this study is the developement health & disaster monitoring measurement using ubiquitous active communication digital datalogger system for monitoring measurement of railway construction sites. For the replacement of current passive data communication, ubiquitous active communication digital datalogger system is studied for the first time with in a country. Therefore data communication method and analyzing program of automatic measurement data is developed for the global positioning automatic digital datalogger system. The results of this study will be using both real time automatic monitoring measurement and health & disaster monitoring measurement of railway structures.

• 학교보건
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• s.17
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• pp.30-65
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• 1988

One of the first constitutional challenes to congressional legislation the area of school health came in 1967. The action of Ministry of Education for the school health progrom is within school health act constitued 20 Articles and ir\ts regulation of 14 Articles.This study was reviewed the school health act and its regulation for the developement of school healh program. The data were collected y 14 Boards of Education from November 1986 to Januar, 1987. The results of this sudy were identified the the articles with regard to health education activity, physical assessment activity, criteria of school health environment, control of communicable disease, First-Aid and clinic management by school nurses.