• Proceedings of the Korean Society of Computer Information Conference
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• 2018.07a
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• pp.327-328
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• 2018

모스 부호는 1844년에 완성한 전신 기호로 짧은 발신 전류와 긴 발신 전류만을 가지고 전신 부호를 구성, 문장을 구성하여 전송할 수 있게한 부호이다. 오늘날 일반인에게 모스 부호는 생소하기도 하며 쉽게 접근하기 어려운 언어이다. 특히 영어가 아닌 한국어 모스 부호 체계에서 그 현상은 더욱 두드러진다. 본 시스템은 라즈베리 파이를 이용하여 모스 부호를 한국어로 변환시키는 어플리케이션을 구현하고, 비전문가인 사용자들이 한국어 모스 부호에 익숙해질 수 있도록 도와주는 것을 목적으로 한다. 또한, 라즈베리 파이 기반으로 한글 모스 부호 해석기를 구현함으로써 한글 모스 부호 교육의 편의성, 휴대성과 접근성을 향상시켰다.

• Journal of Bio-Environment Control
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• v.26 no.1
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• pp.43-48
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• 2017

This experiment was conducted to test the suitability of various organic materials in order to reduce the use dependence of peatmoss as a soil pH regulator and to examine the effect of soil organic matter supply. A 2-year old northern-highbush blueberry (Vaccinium corymbosum L.) 'Duke' plants were planted in the field at $2.0m{\times}2.5m$ spacing in spring. Before planting, organic materials were incorporated into the soil including the planting hole at 20 liter per plant, as the following mixtures: peatmoss only (20 L), peatmoss (10 L) + pine needle (10 L, PN), peatmoss (10 L) + rice hull (10 L, RH), and peatmoss (10 L) + sawdust (10 L, SD). The pH of organic materials was lowest in peatmoss (pH 4.3), followed by PN (pH 4.8), SD (pH 5.7) and RH (pH 7.8). Soil pH measured right after planting ranged from 5.3 to 5.9 and was lower in PM only and PM + PN than PM + RH and SD treatments. In the third year, the pH lowered to the range of 4.2 to 4.5, with PM and PM + PN still maintaining lower values. The early growth was good in the mixed treatment of PM and PN, and the plant height and width and the number of new shoots were good in the PM treatment. Soil water content was maintained highest in PM + PN, followed by PM, PM + SD and PM + RH. Vegetative growth was maintained better in PM and PM + PN, and the number of flower cluster and yield were also slightly higher in those treatments while mean fruit weight was similar among all treatments. Fruit quality indices such as total soluble solids, titratable acidity and firmness were not affected.

• Korean Journal of Poultry Science
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• v.42 no.3
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• pp.267-274
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• 2015

Peat moss has been found to be useful as a plant growth substance, fertilizer, and soil solution. It is not known, however, whether dietary peat moss affects performance in broilers. In the present study, we investigated the effects of dietary peat moss as a feed ingredient in broilers. Experimental diets were prepared by mixing basal feed with PM at 0.0, 0.2, 0.4, 0.8, and 1.6%. In experiment 1, 150 14-day-old Ross broiler chicks were housed for 2 weeks in 15 pens that were randomly assigned into five groups (0.0%, 0.2%, 0.4%, 0.8% and 1.6% PM). Dietary peat moss at 0.2% and 0.4% significantly increased the water intake, body weight, weight gain and feed efficiency compared with the control (0.0% PM, P<0.05) but did not affect feed intake. Higher levels of PM (0.8 and 1.6%) significantly decreased feed intake, body weight and weight gain. In experiment 2, 198 7-day-old Ross chicks were housed for 3 weeks in nine pens that were randomly assigned into three groups (0.0%, 0.2% and 0.4% PM). When the broilers were fed with dietary peat moss for 3 weeks, the peat moss effects disappeared. The results of the current study show that low amounts of dietary peat moss may exert beneficial effects on performance in broilers.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2015.05a
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• pp.176-177
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• 2015

최근 자연계에 존재하는 광학 구조체를 모사하여 우수한 반사 방지 효과를 표면에 구현하고자 하는 연구가 이루어지고 있으며, 특히 우수한 무반사 특성을 가지고 있는 나방의 눈 구조를 모사하여 응용하고자 하는 연구가 활발히 진행되고 있다. 하지만, 주로 폴리머를 기판으로 하여 구현되는 모스아이 구조의 필름은 기계적 성질이 좋지 않아 문제가 되고 있다. 따라서, 본 연구에서는 모스아이 나노구조가 형성된 폴리머 기판에 비해 기계적 물성이 우수한 $Al_2O_3$ 물질을 적용하여, 모스아이 패턴의 기계적 특성을 향상 시키면서도, 모스아이 패턴이 가지는 고유의 우수한 광학적 성질을 유지시키기 위한 실험을 진행하였다. 모스아이 패턴의 광학적 성질을 유지하기 위해서는 나노구조 돌기상에 위치에 따른 두께 차이가 최소화된 균일한 코팅층을 형성하여 그 구조를 유지시킬 필요가 있으므로 이러한 구조물상에 단차피복성(Step Coverage)이 우수하고 sub-nm 단위의 정밀한 두께 조절이 용이한 원자층 증착법(Atomic layer deposition, ALD)을 이용하여 박막을 증착하였다.

• Journal of Bio-Environment Control
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• v.21 no.4
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• pp.362-371
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• 2012

Objective of this research was to secure the information on physical and chemical properties of peatmoss and coir dust. To achieve this, 6 kinds of peatmoss and 10 kinds of coir dust currently used in the country as the root medium components in plant factories were collected and analysed. The mean ${\pm}$ standard deviation (SD) of total porosity and container capacity in peatmoss and coir dust were $79.6{\pm}5.04$ and $83.6{\pm}6.18%$, and $69.9{\pm}10.17$ and $65.9{\pm}3.46%$, respectively. These indicate that peatmoss has higher water holding capacity than coir dust and the characteristics are highly varied among peatmoss. The 4 out of 5 kinds of peatmoss had lower than 10%, but coir dust had 12~26%, of air-filled porosity. The percentage of easily available water and buffering water in peatmoss and coir dust was 18~22 and 11~16% and 9~13 and 5.5~7.5%, respectively. These results indicate that precise irrigation is required when coir dust is used as the root medium. The ranges of pH and electrical conductivity (EC) were 3.46~4.17 and $0.137{\sim}0.253dS{\cdot}m^{-1}$ in peatmoss and 5.31~6.48 and $0.250{\sim}0.1.580dS{\cdot}m^{-1}$ in coir dust. However, $0.563{\pm}0.83dS{\cdot}m^{-1}$ in mean ${\pm}$SD of coir dust EC indicates that it is higher than that of peatmoss, and the coir dust are highly varied in EC. The cation exchange capacity of peatmoss was 3 to 4 times as high as that of coir dust. The coir dust had higher $NO_3$ and $PO_4$ and lower $NH_4$ than peatmoss. The K and Na concentrations in coir dust were extremely high indicating that these ions caused the rising in EC. The percentage of hot water and alkali extracts of peatmoss were 6.67~16.37 and 0~38%, whereas those of coir dust were 30.0~65.1 and 23.1~70.3%. These results mean that possible existence of growth inhibiting materials in coir dust.

• Economic and Environmental Geology
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• v.39 no.2 s.177
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• pp.103-109
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• 2006

Batch adsorption experiments were performed to adsorb cadmium [Cd(II)], copper [Cu(II)], and lead [Pb(II)] onto sphagnum peat moss. According to the results, 10-50 mg/L of Cd(II), Cu(II), and Pb(II) were effectively adsorbed and removed within 1 h by 1.0 g/L of sphagnum peat moss. The amounts of Cd(II), Cu(II), and Pb(II) adsorbed on sphagnum peat moss increased with increasing the initial concentrations. The kinetics for the adsorption of Cd(II), Cu(II), and Pb(II) on sphagnum peat moss was described well using the pseudo-second order model at different initial concentrations. The maximum adsorption capacities calculated from the Langmuir isotherm for Cd(II), Cu(II), and Pb(III) were 33.90, 29.15, and 91.74 mg/g, respectively. Experimental results showed that sphagnum peat moss was a very effective adsorbent on the adsorption of Cd(II), Cu(II), and Pb(II).

• Korean Journal of Plant Resources
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• v.19 no.1
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• pp.68-75
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• 2006

This study was conducted to investigate the combination of proper culture medium for differentiation culture of Chrysanthemum zawadskii var. latilobum KITAMURA. The combinations of culture medium were consisted with an inorganic materials such as vermiculite, perlite, saprolite, sand and upland top soil, and with an organic materials such as peat-moss, leaf mold and compost. For the plant growth characteristics, the plant height, number of tiller, root length and root weight in the combination of leaf mold was relatively great as compared to the treatment with peat-moss and compost. It was considered that humus might be contributed to improve the physical properties of soil as well as the sequential nutrient supply. For the combination of peat-moss, the plant growth was not good because of not sufficient nutrient supply, Also, the plant growth in the treatment of compost was so bad because of enhancement of culture medium pH 8.9 and increasement of phosphorous content.

• Vending industry
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• v.6 no.1 s.16
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• pp.38-39
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• 2006

자판기 생산업체가 없어 전량을 수입에 의존하고 있는 러시아 모스크바를 중심으로 자판기 설치가 대중화되고 있어, 향후 최고의 비즈니스 아이템으로 부상하고 있다. 러시아에서 다수를 차지하는 자판기 정류로는 커피자판기와 캔자판기로 95% 이상이 모스크바에 집중돼 있는 것으로 나타났는데, 모스크바의 경우 자판기 설치대수는 유럽의 5%에 불과하며, 자판기 1대가 약 1,600명꼴로 보급이 되어 있는 반면, 유럽은 1대당 평균 134명 꼴로 보급되어 있는 것으로 나타나 향후 전망이 매우 밝은 것으로 예상된다. 전문가들에 의견에 따르면 러시아 자판기 시장 잠재력은 매우 커 향후 5년간 자판기 판매 금액만 연간 1억 4000만달러, 자판기를 통한 음료수 판매액은 연간 10억달러에 달할 것으로 전망하고 있다. 한편 러시아에 수입괴고 있는 자판기 대수에 대한 정확한 수치는 나와 있지 않지만, 수입통계 및 전문가들의 의견을 고려해 볼 때 모스크바에만 약 5000대의 자판기가 설치돼 있는 것으로 추정된다. 그러나 이들 자판기중 30%는 코카콜라가 제공하고, 10%는 네슬레사, 그리고 펩시콜라, TetraPak사 등이 공급한 것으로 나타나 일반적인 자판기 시장의 확대 여지는 큰 것으로 분석되고 있다.

• 프린팅코리아
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• s.27
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• pp.156-157
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• 2004

최근 오프셋용 CTP는 물론, 플렉소용 CTP의 품질이 비약적으로 발전한 것에 비례하여 플렉소 인쇄분야의 기술도 발전, 오프셋에 가까운 인쇄품질을 구현할 수 있게 되었다. 이에 본지에서는 최근 인쇄업계의 동향에 대해 크레오 본사 CEO인 아모스 미켈슨과 서면 인터뷰를 실시, 게재한다.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.32 no.7
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• pp.126-132
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• 2004

Thermal control of satellite propellant tank is achieved by patch heaters enabled by thermostat's behavior. It is important to attach the thermostat on the appropriate position of the propellant tank. However its position cannot be given with exact numerics because tank is spherical. In practice, the thermostat position is designated approximately in a relevant drawing approximately, thereby an engineer practices depending on his own experience and intuition. The sensitivity analysis for the position of thermostat is performed such that the influence on the thermal behavior and control of tank is examined quantatively. When assembling tank module, the reasonable performance on the thermal control is believed with possible human errors if the uncertainty in the position of thermostat is not quite large.