• Journal of Korean Society on Water Environment
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• v.24 no.4
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• pp.407-414
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• 2008

This study was conducted to evaluate the heavy metal contamination in the soils of Maehyang-ri inland shooting range area. The texture of the Maehyang-ri inland shooting range soil was sandy. Extraction of heavy metals reached quasi-equilibrium within 6 hours using shaking with 0.1 N HCl. 95% and 94% of extraction efficiency was observed for Cu and Pb in the Maehyang-ri shooting range soils, respectively. And Cu and Pb contamination of level of the T-1 region soil was $114.4{\pm}5.7mg/kg$ and $362.3{\pm}20.5mg/kg$. This may be due to the effects of mineralogical factor, soil particle size and un-residual fractions such as exchangeable, carbonate, Fe-Mn oxide and organic+sulfide.

• Proceedings of the KIEE Conference
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• 1997.07a
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• pp.57-63
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• 1997

In this paper we report test results of the dynamic characteristics of the linear induction motor(LIM) used for propulsion of the UTM-01. To test a vehicle scale LIM, we manufactured a bogie type sled propelled by LIM. In this report, the LIM end effects for both cases when the vehicle is at rest and when the vehicle is running were measured and compared with the calculations. The LIM thrust and the vertical forces were measured by the 3-component load cell and the results were compared with the calculations from measured vertical load and vehicle velocity.

• Journal of Applied Biological Chemistry
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• v.42 no.3
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• pp.151-153
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• 1999

Gromwell (Lithospermum erythrorhizon) pigment solution and Jindo Hongju prepared in the laboratory showed characteristic pH-dependent color changes and a shift in absorption maxima. This phenomenon was not observed in the solution of the artificial food colorant Red No. 2 which was suspected to be used in the manufacture of fake Jindo Hongju. A few fake products could be detected by using the pH-dependent shift in absorption maxima among the Jindo Hongju on market.

• 한국정보교육학회:학술대회논문집
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• 2008.01a
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• pp.160-165
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• 2008

본 연구에서는 2005년 12월에 개정된 초 중등학교 정보통신기술 교육 운영지침에 따라 변화된 교육과정에 적합한 초등학교 ICT 용어를 선정하였다. 정보통신기술의 급격하게 발달하면서 새로운 용어가 계속 생성되고, 사양화되는 용어가 생겼으며, 교육인적자원부가 이러한 사회적 요구에 따라 초 중등학교 정보통신기술 교육 운영지침을 개정하였기 때문에 초등학교 ICT 용어도 그에 적합하게 재정비할 필요가 있다. 먼저 개정된 운영지침과 초등학교 전자교과서를 분석하여 예비 용어를 약 327개를 수집하였다. 그리고 새 운영지침과 정보통신기술용어 사전을 참고로 하여 초등학교 ICT 용어 선정의 원칙과 표기 원칙을 정하여 239개의 초등 ICT 용어를 선정하였다. 마지막으로 선정된 초등 ICT 용어를 새 운영지침에 맞게 단계별로 1, 2, 3 단계로 분류하고, 영역별로 정보 생활 용어, 정보 기기 용어, 정보 처리 용어, 정보 가공 용어로 나누어 분류하였다.

• Proceedings of the Korean Fiber Society Conference
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• 2001.10a
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• pp.275-278
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• 2001

나일론 11[poly(undecanolactam)]은 적어도 5개의 결정형태를 가지며 삼사정계의 $\alpha$형, 단사정계의 $\beta$형 그리고 3개의 육방정계 또는 가육방정계의 형태(${\gamma}$,$\delta$,$\delta$')를 갖는다고 알려져 있다. $\alpha$형은 95$^{\circ}C$ 이하에서 안정하고 $\delta$형은 95$^{\circ}C$ 이상에서 안정하다. 용융상태 또는 5형에서 급냉하면 준안정 상태의 $\delta$'형을 형성한다. $\alpha$형을 trifluoroacetic acid로 처리하면 안정할 ${\gamma}$형이 얻어진다[1-2]. (중략)

• Journal of The Korean Astronomical Society
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• v.23 no.1
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• pp.71-82
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• 1990

Theoretical calculations of the combined radiative transfer and statistical equilibrium equation including the charge-particle conservations have been earned out for a multilevel hydrogen atom in quiescent prominences. Cool and dense models show the steep changes of population and radiation field in the vicinity of the surface, while these physical quantities remain unchanged for models with temperature of 7,300K, regardless of total densities. Ionization rate of hydrogen atom related with metallic line formation varies in considerable amounts from the surface to the center of model prominences cooler than 6,300K. However, such cool models cannot release enough hydrogen line emissions to explain observed intensities. Prominence models with a temperature higher than 8,000K can yield the centrally reversed Lyman line profiles confirmed by satellite EUV observations. We find that queiscent prominence with a density between $2{\times}10^{11}$ and $10^{12}cm^{-3}$ should be in temperature range between 6,300K and 8,300K, in order to explain consistently observed H alpha, beta line emissions and $n_p/n_l$ ratio.

• Journal of Intelligence and Information Systems
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• v.14 no.3
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• pp.77-86
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• 2008

This study presents a method for estimating the productivity of the ship operation in container terminal. The productivity of the ship operation is influenced by the specifications of each piece of equipment and layouts of the terminal, and the operational strategies. The handling equipments considered in this study are QC(Quay Crane), RMGC (Rail mounted gantry crane), and Transporter (TR). The simulation experiments are conducted to estimate the QC productivity based on the change of the design factors.

• KIEAE Journal
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• v.10 no.6
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• pp.33-39
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• 2010

Visual Environment and productivity are correlated. So we need to create a comfortable visual environment and maintain proper workplane illumination level. We can obtain lighting energy savings and comfortable visual environment using daylight and LED lights. In this study, we characterized the indoor illuminance level according to the sky condition and proposed dimming control strategy of LED lights. Energy savings in On/Off control mode are 40% at clear sky and 28% at intermediate sky. In dimming control mode, energy savings are 77.2% at clear sky and 64.1% at intermediate sky. Then we obtain the appropriate dimming control strategy of LED lights based on data. Dimming rates are 0-14.2-80(min-avg-max, %) for LED 1, 0-19.9-60% for LED 2 and 30-61.4-90% for LED 3. Lighting energy savings are 68.2% for LED dimming system applied this control method.

• The Korean Journal of Zoology
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• v.16 no.1
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• pp.5-12
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• 1973

著者들은 1968, 1971 및 1972년의 3個年間 소백산에서 採集한 지렁이 총 1,850個體를 調査 整理한 결과 Pheretima agrestis, Ph. gucheonensis, Ph. hilgendorfi, Ph. jiriensis, Ph. koreana, Ph. soulensis 및 Ph. susakii patina 의 7기지종과 신종 Ph. planta 와 Ph. sopaikensis 등 총 1屬 9種을 얻었다. 신종 Ph. planta는 체장 105mm., 체폭 5.5mm., 체절수 101개이며, spermathecal pore 2雙으로서 vi체절과 vii 체절 腹面 setal line 바로 위에 位置한다. 또 male pore region의 양모에 있어서 뚜렷한 特徵을 나타내고 있다. 신종 Ph. sopaikensis 는 기지종인 Ph. koreana 다음으로 많은 수가 채집되었으며 체장 80mm., 체폭 4.5mm., 체절수 82개이며 spermathecal pore는 2雙으로서 5/6, 6/7에 位置한다. 특히 xviii 체절 male pore 사이에 雙을 이 불규칙적인 모양의 genital patches 는 본종의 특징이다.

• Korean Journal of Plant Resources
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• v.23 no.3
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• pp.256-260
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• 2010

We performed the floristic study of Carpathian mountains in Ukraine from April 2008 till October 2009. We designated eight important areas to investigate in Ukraine Carpathians including Svydovets, Chornohora, Kuziy-Trybushany, Maramorosh, Uholka-Shyrokyi Luh, Narcissi Valley, Chorna Hora, and Yulivska Hora. The total numbers of vascular plants in investigated area were 1,349 speices from 502 genera and 112 families. The endemic species to Carpathians numbered to 65 from 49 genera belonging to 24 families, and it was corresponded to 4.8% of the 1,349 vascular species. We prepared the list of vascular plants with compiling database on useful plants. Ukraine Carpathians endemic species could be applied as high value products in research and practice. Moreover, the flora of Carpathian mountains which is distributed in five nations in eastern Europe and famous for Primeval Beech Forests (Fagus sylvatica), is useful to compare the floristic study with Korean flora.