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Noise extraction of sea skin surface temperature image observed by thermal infrared camera
Tamba, Sumio,Yokoyama, Ryuzo 대한원격탐사학회 1997 International Symposium on Remote Sensing Vol.13 No.1
A thermal infrared camera provides relevant data to observe fine structure of sea skin temperature distribution, but the image is exposed to various noises. We have developed two algorithms to correct a strip-type noise caused by the scanning mechanism and an inverse shading-type noise caused by spatial inhomogeneity of detecting sensitivity. The first algorithm is based on two dimensional Fourier transform, and the second one was based on a spatial weighting function. By applying to images of MUBEX (MUtsu Bay sea surface temperature validation EXperiment) [1], we could confirm the effectiveness of the algorithms.
Tamba, Sumio 대한원격탐사학회 1998 International Symposium on Remote Sensing Vol.14 No.1
The MUBEX (MUtsu Bay sea surface temperature validation EXperiment) campaign has been held from 1995 to 1997 in summer. During the MUBEX campaign, a thermal infrared camera (TIC) installed on a research vessel, which was also equipped with other various observation devices, was intensively used to observe microscopic structure of sea skin surface temperature (SSST) behavior. We have. now a total number of 500,000 images observed by the TIC under various weather conditions, i.e., very calm or wavy sea condition, and clear, patchy or cloudy sky condition. In this paper, we show typical SSST patterns observed by the TIC, and describe the result of statistical analysis of SSST.
A Path Following Control of an Unmanned Autonomous Forklift
Tamba, Tua Agustinus,Hong, Bong-Hee,Hong, Keum-Shik 제어로봇시스템학회 2009 Transaction on control, automation and systems eng Vol. No.
In this paper, the development of an unmanned autonomous forklift is discussed. A system configuration using vision, laser ranger finder, sonar, etc. for autonomous navigation is presented. The kinematics of a spin-turn mechanism is analyzed first, and then the obtained kinematics equations are transformed to the equations represented by path variables. These equations are nonlinear state equations to be used for control purposes. A time varying feedback control law via the chained form of Murray and Sastry [12] is derived. The effectiveness of the proposed control law is examined through simulations and experiments.
Overexpression of human erythropoietin in tobacco does not affect plant fertility or morphology
Tamba A. Musa,Chiu-Yueh Hung,Diane E. Darlington,David C. Sane,Jiahua Xie 한국식물생명공학회 2009 Plant biotechnology reports Vol.3 No.2
Human erythropoietin (EPO) is a leading product in the biopharmaceutical market, but functional EPO has only been produced in mammalian cells, which limits its application and drives up the production costs. Using plants to produce human proteins may be an alternative way to reduce the cost. However, a recent report demonstrated that overexpression of the human EPO gene (EPO) in tobacco or Arabidopsis rendered males sterile and retarded vegetative growth, which raises concern whether EPO might interfere with hormone levels in transgenic plants. In the present study, we demonstrated that overexpressing EPO with additional 50-His tag and 30 ERretention peptides in tobacco did not cause any developmental defect compared to GUS plants. With our method, all 20 transgenic plants grew on selective medium and, further confirmed by PCR, were fertile. Most of them grew similarly compared to GUS plants. Only one transgenic plant (EPO2) was shorter in plant height but had twice the life span compared to other transgenic plants. When 11 randomly selected EPO plants, along with the abnormal plant EPO2, were subjected to RT-PCR analysis, all of them had detectable EPO transcripts. However, their protein levels varied considerably; seven of them had detectable EPO proteins analyzed by western blot. Our results indicate that overexpressing human EPO protein in plants does not have detrimental effects on growth and development. Our transformation systems allow us to further explore the possibility of glycoengineering tobacco plants for producing functional EPO and its derivatives. Human erythropoietin (EPO) is a leading product in the biopharmaceutical market, but functional EPO has only been produced in mammalian cells, which limits its application and drives up the production costs. Using plants to produce human proteins may be an alternative way to reduce the cost. However, a recent report demonstrated that overexpression of the human EPO gene (EPO) in tobacco or Arabidopsis rendered males sterile and retarded vegetative growth, which raises concern whether EPO might interfere with hormone levels in transgenic plants. In the present study, we demonstrated that overexpressing EPO with additional 50-His tag and 30 ERretention peptides in tobacco did not cause any developmental defect compared to GUS plants. With our method, all 20 transgenic plants grew on selective medium and, further confirmed by PCR, were fertile. Most of them grew similarly compared to GUS plants. Only one transgenic plant (EPO2) was shorter in plant height but had twice the life span compared to other transgenic plants. When 11 randomly selected EPO plants, along with the abnormal plant EPO2, were subjected to RT-PCR analysis, all of them had detectable EPO transcripts. However, their protein levels varied considerably; seven of them had detectable EPO proteins analyzed by western blot. Our results indicate that overexpressing human EPO protein in plants does not have detrimental effects on growth and development. Our transformation systems allow us to further explore the possibility of glycoengineering tobacco plants for producing functional EPO and its derivatives.
A Nonlinear Path Following Control of an Unmanned Autonomous Industrial Vehicle
Tua Agustinus Tamba(투아 야구스티누스 탐바),Augie Widyotraitmo,T.T.Wuyen Bui,Keum-Shik Hong(홍금식) 제어로봇시스템학회 2008 제어로봇시스템학회 국내학술대회 논문집 Vol.2008 No.10
In this paper, the development of an unmanned autonomous forklift is discussed. A control architecture using vision, laser ranger finder, sonar, etc. for autonomous navigation is presented. The kinematic of spin-turn mechanism is analyzed first, and then the obtained kinematic equations are transformed to the equations represented by path variables. These equations are nonlinear state equations to be used for control purposes. A time varying feedback control law via the chained form of Murray and Sastry is derived. The effectiveness of the proposed control law is examined through simulation.
A Path Following Control of an Unmanned Autonomous Forklift
Tua Agustinus Tamba,홍봉희,홍금식 제어·로봇·시스템학회 2009 International Journal of Control, Automation, and Vol.7 No.1
In this paper, the development of an unmanned autonomous forklift is discussed. A system configuration using vision, laser ranger finder, sonar, etc. for autonomous navigation is presented. The kinematics of a spin-turn mechanism is analyzed first, and then the obtained kinematics equations are transformed to the equations represented by path variables. These equations are nonlinear state equations to be used for control purposes. A time varying feedback control law via the chained form of Murray and Sastry [12] is derived. The effectiveness of the proposed control law is examined through simulations and experiments.