• Magazine of the Korea Concrete Institute
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• v.4 no.1
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• pp.127-134
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• 1992

Generally speaking, the internal moisture of concrete is mainly distributed in inner part and concrete surface which is exposed are dned according to influence of temperature and humidity. So, the properties which are compressive strength, modular elasticity, and volume change are different at each part even in same concrete. This is because moisture distribution is changed according to the evaporation and move ment of moisture, exist in the inner porosity of concrete. Therefore, it is necessary that we investigate the properties of concrete according to moisture distribution. The purpose of this study is investigating correlation between the moisture content and mechanical properties in concrete. Compressive and tenslle strength decrease according to increasing moisture content, but modular elas ticity increase. Those increasing or decreasing ratio at drying ratio 100% (absolute dries) is as follows in comparative of drying ratio 0 % (saturated condition).tion).

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2016.10a
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• pp.798-799
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• 2016

Reagent Cabinet of existing that management does not classify the reagents by characteristics it has a problem that can result dangerous situations. Also, the situation impossible the ability to control the reagent cabinet from outside in the event of dangerous situations. In this paper, design a system for managing reagents it can be classified according to the characteristics and the reagent cabinet management on a mobile device. Utilizing the characteristics classification from first to sixth classification management to fit the classification of each reagent. The mobile device transmits the sensor control, reagent and sensor data monitoring, dangerous situation occurs when the alarm message. Accordingly, it is expected through the characteristics classification reduce accidents in the laboratory if the dangerous situation will be a prompt action from the outside.

• Proceedings of the IEEK Conference
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• 2009.05a
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• pp.9-11
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• 2009

It is well-known that the performance of turbo codes can be improved by allocating different energies per code symbol. In this paper, based on this observation, we propose a joint encoding and modulation scheme for quadrature amplitude modulated turbo code systems. In the proposed scheme, the amount of energy difference between the turbo coded symbols is optimized by optimizing the constellation of quadrature amplitude modulation(QAM). The proposed scheme offers better coding gain compared to the conventional combination of binary turbo code and QAM at the bit error rate of $10^{-5}$.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.10a
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• pp.209-212
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• 2004

본 연구는 도토리 가루가 지방대체제로 저지방 소시지 제조 시 첨가하여 기존의 유화형 소시지와 유사한 성상을 갖는 적정 형태와 적정량을 구하기 위하여 실시하였다. 도토리가루의 첨가 형태에 따른 이화학적 및 조직학적인 성상에는 차이가 없었으며, 첨가량이 0.5에서1.0%로 증가할수록 점성이 감소하였다. 한편 도토리 가루를 첨가한 저지방 처리구는 유화형 대조구와 명도에서만 차이를 보일 뿐 다른 이화학적 및 조직학적 성상에서는 차이를 보이지 않았다. 따라서 도토리 가루 0.5%를 저지방 소시지 제조시 첨가하여 Gelcarin을 첨가한 지방대체제와 유사한 성상을 보임으로써 도토리 가루의 지방대체제로서 이용 가능성을 시사하였다.

• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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• 2005.11a
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• pp.213-219
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• 2005

목재자원의 부족과 천연물 가공시 부산물의 재활용 등 다양한 이유로 적용되는 비목재 펄프류의 섬유 성상과 특성은 최종 제품의 품질과 그 가공 공정등에 지대한 영향을 끼치게 된다. 이를 위하여 본 연구에서는 화상분석을 통한 비목재 펄프의 섬유성상 분석 방법을 모색하였고, 실제 다양한 성상의 담배 부산물을 그 원료로 제조되는 종이형태의 재구성 담배인 판상엽 제품의 구성성분 분석에 적용하여 그 적용 가능성을 평가하였다.

• Journal of Satellite, Information and Communications
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• v.2 no.1
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• pp.7-13
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• 2007

A new and effective Doppler effects compensation method based on constellation estimation as well as an average power saving strategy by modified modulation scheme utilizing zero point constellation are presented with theoretical analysis and relevant simulations. The suggested schemes are proved to be very effective for satellite OFDM signals relayed by power limiting transponder for the mobile terminal on high speed vehicles.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2009.04a
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• pp.454-459
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• 2009

문화재는 민족단위의 공동체적 문화자산이며 이를 보호해야할 의무가 있음에도 불구하고 2000년부터 2005년까지 사찰 및 문화재에서만 324건의 화재가 발생, 평균 60건 이상의 화재가 발생하고 있으며 그 중 전기화재가 124건, 방화 화재 20건이라는 화재 피해가 도출되었다. 그럼에도 불구하고 아직 목조건축문화재의 화재성상에 관한 연구는 미비한 실정이다. 따라서 본 연구에서는 목조건축문화재의 화재예방을 위하여 2008년 일어난 숭례문화재 등을 토대로 목조건축문화재의 연소특성 및 화재성상에 관하여 살펴보았다. 이 후 실물화재 실험 등의 화재실험을 통하여 목조건축문화재의 연소특성 및 화재성상을 살펴볼 필요가 있다.

• Journal of the Korean hospital association
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• v.37 no.1 s.311
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• pp.51-54
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• 2008

성상철 서울대학교병원장은 지난 2004년 5월 제13대 병원장에 취임한 이래 병원 CEO로서 탁월한 경영능력을 인정받아 지난해 재임명을 받고 현재 14대 병원장 임기를 수행 중에 있다.

• Journal of the Korea Organic Resources Recycling Association
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• v.23 no.3
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• pp.68-77
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• 2015

This study was conducted to characterize food waste leachate (FWL) and to compare its characteristics according to generation source: feed supplement- and compost-producing facilities. FWL contained high levels of organic compounds such as carbohydrate, protein and lipid. The moisture content of FWL was among the range of conventional wet anaerobic digestion. FWL was acidic (pH of $4.0{\pm}0.3$) and showed high coefficients of variance for specific parameters: carbohydrate, protein, lipid, ethanol, acetic acid and propionic acid. FWL derived from feed supplement-producing facilities showed slightly lower concentrations of most parameters than FWL derived from compost-producers. However, the difference was not significant at 5% significance level according to analysis of variance.

• Korean Chemical Engineering Research
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• v.45 no.6
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• pp.596-603
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• 2007

Rapid or on-line coal analysis is of great interest in coal industry as it would allow efficient plant operation. Multivariate analysis has been applied to near-infrared(NIR) spectra coal for investigating the relationship between coal properties(%) (moisture, ash, volatile matter, fixed carbon, carbon, hydrogen, nitrogen, oxygen, sulfur), heating value(kcal/kg) and corresponding near-infrared spectral data. The quantitative analysis was carried out by applying PLS(partial least squares regression) to determine a methodology able to establish a relationship between coal properties and NIR spectral data being applied mathematical pre-treatments for minimizing the physical features of the samples. As a results of the analysis, this technique is able to classify the species of coals and to predict the all coal properties except ash, nitrogen and sulfur. The efficient operation of coal fired power plant is expected owing to real time on-line coal analysis of moisture and heating value.