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총류탄 기반 침투형 Smart Grenade Robot 개발
이준성(Joon Seong Rhee),박민수(Min Su Park) 제어로봇시스템학회 2012 제어로봇시스템학회 합동학술대회 논문집 Vol.2012 No.7
In this paper, We designed a Rifle Grenade Launched Smart Grenade Robot for surveillance, reconnaissance and precision attack in urban buildings, bunkers, tunnels and caves. We present an effective man-transportable robot system for military operations which is composed of a mobile platform, explosion device, rifle grenade and OCU(Operating Control Unit). The mobile platform equipped with a MCU(Micro Control Unit), low light CCD camera and 2-wheel driving mechanism for driving mechanism. The explosion device has two types for attacking and disabling enemies. For attacking uses high explosive shell and for disabling enemies uses CS Gas. Rifle Grenade is used for launching the robot to a far distance and for protecting the robot from the shock. And the OCU is designed to control and monitor the robot remotely. A military operator can set up the robot system and can control and monitor the robot through OCU. An important point in this Rifle Grenade Launched Smart Grenade Robot design is to design a lightweight robot system which weighs less than 1.5kg for launching, and mounting a small explosion device in the mobile platform.
이준식,오성국,홍성권 한국화학공학회 1981 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.19 No.5
본 연구에서는 실험실에서 조립한 회분식수소 첨가반응 장치를 사용하여 균질한 촉매와 원료하에서 콩기름의 수소첨가반응을 특성짓는 반응속도, 선택도비, 트란스 이성질체의 생성에 미치는 공정 변수(교반속도, 촉매농도, 반응온도, 반응압력)의 영향을 조사함으로써, 각각의 바라는 생성물을 생성시키기 위한 일련의 반응조건들을 선택하는데에 지침이 되는 기본자료를 제시하였다. 또한 콩기름의 수소첨가 공정에서 문제가 되고 있는 반응생성물로부터의 닉켈촉매 입자들을 제거하는데 Gulftronic 분리기의 도입 타당성 여부를 실험실용 분리기를 사용하여 시험한 결과, 이 분리기는 조절, 운전, 분리성능면에 있어서 종래의 여과방법보다 훨씬 더 효율적이라고 결론지울 수 있었다. In this study, we presented the basic data for a guide to the selection of a set of conditions to give each desired products by investigating the effects of such process variables as agitation rate, catalyst concentration, temperature and pressure on the reaction rate, selectivity ratio and trans-isomer formation which characterize the hydrogenation of soybean oil under consistent catalyst and feeds. On the other hand, catalyst separation from the oil after the reaction was attempted with a laboratory scale Gulftronic separator and the separator was highly satisfactory in terms of control, operation, and efficiency.
Rhee, Sook Hee,Park, Kun Young,Han, Ji Sook,Cheigh, Mee Jeung,Kim, Seong Joon 부산대학교 김치연구소 1996 김치의 과학과 기술 Vol.2 No.-
This study was conducted to investigate the changes in chemical, microbial, sensory characteristics and volatile flavor components of wooung(burdock, Arctium lappa, L) kimchi during fermentation at 15℃. Three types(A, B, C) of wooung kimchi were prepared. Sample A was prepared with basic ingredients, on the other hand, sample B was prepared with all sorts of ingredients. These samples were mixed after salting the sliced burdock with 4% brine for 30min. Sample C was prepared mixing with all sorts of ingredients after blanching the sliced burdock with 2% vinegar solution. pH decreased slowly until 3 days, and then decreased rapidly for 4∼7 days in all samples. Total acidity increased gradually in all samples. The changes of pH and total acidity were the smallest in sample C and were the greatest in sample B. The reducing sugar contents decreased slowly until 7 days, and then decreased rapidly for 8∼14 days in sample B and C. The numbers of lactic acid bacteria and total bacteria reached maximum value at 14 days in sample A and B, and at 10 days in sample C, respectively. The numbers of lactic acid bacteria and total bacteria of sample B were much greater than those of other samples. In sensory evaluation, sample B exhibited the best scores and sample C showed the worst scores in all characteristics. The major volatile components in wooung kimchi were identified as ethanol, hexanal, 2-hexenal, disulfide di-2-prophenyl, zingiberene and β-sesquiphellandrene. The relative amounts of hexanal, 1-hexanol and ethanol were decreased, while the relative amounts of acetic acid ethyl ester, 3-hydroxy-2-butanone and acetic acid were increased gradually during fermentation.
Modeling of Solar Radiation Using Silicon Solar Module
( Joon Yong Kim ),( Seung Hwan Yang ),( Chun Gu Lee ),( Young Joo Kim ),( Hak Jin Kim ),( Seong In Cho ),( Joong Yong Rhee ) 한국농업기계학회 2012 바이오시스템공학 Vol.37 No.1
Purpose: Short-circuit current of a solar module that is widely used as a power source for wireless environmental sensors is proportional to solar radiation although there are a lot of factors affecting the short-circuit current. The objective of this study is to develop a model for estimating solar radiation for using the solar module as a power source and an irradiance sensor. Methods: An experiment system collected data on the short -circuit current and environmental factors (ambient temperature, cloud cover and solar radiation) during 65 days. Based on these data, two linear regression models and a non-linear regression model were developed and evaluated. Results: The best model was a linear regression model with short-circuit current, angle of incidence and cloud cover and its overall RMSE(Root Means Square Error) was 66.671 W/m2, The other linear model (RMSE 69.038 W/m2) was also acceptable when the cloud cover data is not available
Parametric ROC Analysis to Evaluate Image Reconstruction Algorithms for Computed Tomography
Rhee, Seong-Won,Park, Joon-ho,Oh, Ju-Hwan 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(C)
When a diagnostic test is based on an observed variable that lies on a continuous or graded scale, and assessment of the overall value of the test can be made through the use of a receiver operating characteristic (ROC) curve. Parametric estimator assuming Gaussian distribution accesses to the true area under ROC curve (AUC), while nonparametric estimator has a systematical underestimation problem. In this paper, we consider a parametric approach to analyze areas under correlated ROC curves and compare this parametric method with Hanley and McNeil(1983)approach and DeLong et al.(1988) approach.
Femtosecond Measurements of Vibrational Circular Dichroism and Optical Rotatory Dispersion Spectra
Rhee, Hanju,Kim, Seong-Soo,Jeon, Seung-Joon,Cho, Minhaeng Wiley-VCH 2009 ChemPhysChem Vol. No.
<B>Graphic Abstract</B> <P>Heterodyne-detected spectral interferometry with fs IR pulses measures vibrational optical activity free-induction-decay fields. By utilizing Brewster's angle germanium polarizers with ultimate extinction ratio over almost the entire IR frequency range, the complex vibrational optical activity susceptibility of small organic chiral molecules in the C&n.bond;C stretching mode region is characterized (see picture). <img src='wiley_img/14394235-2009-10-13-CPHC200900340-content.gif' alt='wiley_img/14394235-2009-10-13-CPHC200900340-content'> </P>
Hee Joon Kim,Min-Kyung Park,Kwang-Ho Rhee,Hee-Sang Youn,Seong-Hee Ko,Hyun-Sook Kim,Myung-Hee Chung 한국식품영양과학회 2008 Preventive Nutrition and Food Science Vol.13 No.3
We located a group of healthy young males (aged 20~30) who had been taking a high dose (more than 5 g) of vitamin C daily for more than one year. We observed that this vitamin C group had plasma levels of vitamin C that were more than three times that of the control group. The control group had not taken any additional vitamin C except for that included in their diets. But the vitamin C group showed significantly lower amounts of Cu/ZnSOD, catalase and glutathione-s-transferase and lower activities of glutathione peroxidase and glutathione reductase in erythrocyte lysates than the control group. However, there was no difference in the plasma levels of lipid peroxides between the two groups. These results suggest that vitamin C offsets its own contribution to anti-oxidant activity by repressing the expression of anti-oxidant enzymes and also excludes the possibility that vitamin C acts as a pro-oxidant in vivo.
태양일사가 실내공간의 열적 쾌적성과 환기성능에 미치는 영향에 관한 연구
연성현(Seong Hyeon Yeon),이효준(Hyo Joon Lee),리광훈(Gwang Hoon Rhee) 한국가시화정보학회 2016 한국가시화정보학회지 Vol.14 No.1
Modern people spend much time at indoor space. So, People want to make better indoor air condition. But the facade of building is made of glass to be seen urbanely, the effect of solar radiation makes indoor environment worse. This study designs an open space affected by solar radiation with 4-way cassette air-conditioner. Using numerical simulation, this paper investigates thermal comfort and ventilation performance with discharge angles 30˚ and 45˚. To study thermal comfort, this paper studies distribution of velocity, temperature and effective draft temperature. Also, this paper introduces concept of air age to study ventilation performance. The flow influenced by solar radiation determines thermal comfort and ventilation performance in room space. This study shows that discharge angle of 45 degree has better thermal comfort and ventilation performance than that of 30 degree.