• Title/Summary/Keyword: adapted process

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Process Control of Gas Metal Arc Welding Using Neural Network (신경회로망을 이용한 GMA 용접의 공정제어)

  • 조만호;양상민;조택동;김옥현
    • Proceedings of the KWS Conference
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    • 2002.05a
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    • pp.68-70
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    • 2002
  • A CCD camera with a laser strip was applied to realize the automation of welding process in GMAW. The Hough transformation was used to extract the laser stripe and to obtain specific weld points. In this study, a neural network based on the generalized delta rule algorithm was adapted for the process control of GMA, such as welding speed, arc voltage and wire feeding speed.

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Bioethanol Production from Seaweed Kappaphycus alvarezii by Simultaneous Saccharification and Fermentation (홍조류(Kappaphycus alvarezii)의 동시 당화 발효를 이용한 바이오에탄올의 생산)

  • Ra, Chae Hun;Kim, Sung-Koo
    • Microbiology and Biotechnology Letters
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    • v.44 no.2
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    • pp.145-149
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    • 2016
  • Thermal acid hydrolysis pretreatment of Kappaphycus alvarezii was carried out with 12% (w/v) seaweed slurry and 180 mM H2SO4 at 140°C for 5 min. Utility of the thermotolerant yeast Kluyveromyces marxianus KCTC7150 was evaluated with respect to cell growth and ethanol fermentation at 40°C was close to optimal for enzymatic hydrolysis. This could lead to the integration of both the saccharification and fermentation processes. The levels of ethanol production by simultaneous saccharification and fermentation (SSF) with non-adapted and adapted K. marxianus KCTC7150 were 9.1 g/l with an ethanol yield (YEtOH) of 0.24 and 10.2 g/l with an ethanol yield (YEtOH) of 0.27 at 156 h, respectively. The two-phase SSF process was employed in this study to improve the efficiency of ethanol fermentation. Adapted K. marxianus KCTC7150 using the two-phase SSF process produced 13.5 g/l with an ethanol yield (YEtOH) of 0.35 at 96 h. Development of the two-phase SSF process could enhance the overall ethanol fermentation yields of the seaweed K. alvarezii.

A New Remeshing Technique of Tetrahedral Elements by Redistribution of Nodes in Subdomains and its Application to the Finite Element Analysis (영역별 절점 재분포를 통한 사면체 격자 재구성 방법 및 유한요소해석에의 적용)

  • Hong J.T.;Lee S.R.;Yang D.Y.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.607-610
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    • 2005
  • A remeshing algorithm using tetrahedral elements has been developed, which is adapted to the mesh density map constructed by a posteriori error estimation. In the finite element analyses of metal forging processes, numerical error increases as deformation proceeds due to severe distortion of elements. In order to reduce the numerical error, the desired mesh sizes in each region of the workpiece are calculated by a posteriori error estimation and the density map is constructed. Piecewise density functions are then constructed with the radial basis function in order to interpolate the discrete data of the density map. The sample mesh is constructed based on the point insertion technique which is adapted to the density function and the mesh size is controlled by moving and deleting nodes to obtain optimal distribution according to the mesh density function and the quality optimization function as well. After finishing the redistribution process of nodes, a tetrahedral mesh is constructed with the redistributed nodes, which is adapted to the density map and resulting in good mesh quality. A goodness and adaptability of the constructed mesh is verified with a testing measure. The proposed remeshing technique is applied to the finite element analyses of forging processes.

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A Study on the Computer Simulation of the Multi-Color Printing adapted Process Ink Characteristics (인쇄잉크 특성을 고려한 다색인쇄의 컴퓨터 시뮤레이션에 관한 연구)

  • 안석출
    • Journal of the Korean Graphic Arts Communication Society
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    • v.12 no.1
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    • pp.69-79
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    • 1994
  • For the vehicle of UV ink formulated with prepolymer and/or reactive diluent, according to change photoinitiator concentration, we measured viscoelasticity of films of bisphenol A diacrylate cured by UV irrdiation, investigated dynamic characteristics and structural changes.

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THE EMPIRICAL LIL FOR THE KAPLAN-MEIER INTEGRAL PROCESS

  • Bae, Jong-Sig;Kim, Sung-Yeun
    • Bulletin of the Korean Mathematical Society
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    • v.40 no.2
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    • pp.269-279
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    • 2003
  • We prove an empirical LIL for the Kaplan-Meier integral process constructed from the random censorship model under bracketing entropy and mild assumptions due to censoring effects. The main method in deriving the empirical LIL is to use a weak convergence result of the sequential Kaplan-Meier integral process whose proofs appear in Bae and Kim [2]. Using the result of weak convergence, we translate the problem of the Kaplan Meier integral process into that of a Gaussian process. Finally we derive the result using an empirical LIL for the Gaussian process of Pisier [6] via a method adapted from Ossiander [5]. The result of this paper extends the empirical LIL for IID random variables to that of a random censorship model.

Polycrystalline silicon doping using antimony thin film as doping source (안티몬 박막을 도우핑소스로 찬 다결정실리콘 도우핑)

  • 이인찬;마대영;김상현;김영진;김기완
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 1993.11a
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    • pp.55-59
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    • 1993
  • In this study, we developed new process for doping poly-Si film. Sb(antimony) thin film was used as doping source. Sb was evaporated on poly-Si film deposited by LPCVD fallowed by annealing. We investigate sheet resistance variation with annealing temperature and time. Finally we adapted this process to poly-Si TFT fabrication.

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Design of Workflow Management System using Web Services (웹 서비스를 이용한 워크플로우 관리 시스템의 설계 방안)

  • 오명은;이용표;한상용
    • Proceedings of the CALSEC Conference
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    • 2003.09a
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    • pp.230-235
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    • 2003
  • A Workflow Management System is one which provides procedural automation of a business process by management of the sequence of work activities. The existing workflow management systems have limitation of interaction among application systems. In this paper, we propose a new workflow management system that can be adapted in dynamically changed paradigm of distributed computing by using Web Service. System Architecture and prototyping execution model of the system is described in BPEL4WS.

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Battle Group Combat Simulation Model ('BAGSIM') as an Experimental Tool

  • Chol Sang-Yeong
    • Journal of the military operations research society of Korea
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    • v.16 no.2
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    • pp.29-42
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    • 1990
  • This paper describes a Battle Group Combat Simulation Model (called 'BAGSIM'). BAGSIM is developed to be used as an experimental tool for studies about combat modelling at battle group level. Thus it takes many of the parameters and situations into consideration at this level, and it is designed to be easily adapted to represent equivalent situations to the other more aggregated models. Further the main processes occurring in its simulation procedure such as target detection process, target selection process, firing and killing processes are verified by comparison with the existing stochastic duel models.

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The Aging-time change by the plasma-treatment of MgO film in AC-Plasma Display Panels

  • Seo, Gi-Weon;Kim, Jong-Bin;Park, Seung-Tea;Seo, Young-Woo;Kim, Sung-Gyu;Lee, Sang-Han;Lee, Chang-Joon;Kim, Dae-Young;Park, Min-Soo;Kim, Je-Seok;Ryu, Byung-Gil
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07a
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    • pp.721-723
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    • 2005
  • We applied the Atmospheric Pressure Plasma (AP-plasma) to the MgO film to try to control the Aging-time on the PDP production-line. The MgO film surface and the discharge characteristics of AC-PDPs were investigated, using the plasma-treated MgO film. The Aging-time change can be achieved by treating the MgO film with plasma. This method can be adapted to the mass production-line.

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A Study of the Development Model of Chinese Traditional Medicin - Centering on the Process of the Professionalization - (중의학의 발전모형에 대한 연구 -전문화과정을 중심으로-)

  • Lee Hyun Ji
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.17 no.3
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    • pp.611-616
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    • 2003
  • Through the whole period of the twentieth century, Chinese Traditional Medicine has been affected by the political and cultural changes of Chinese society. Before the 1949 Communist Revolution, Chinese Traditional Medicine was regarded as a dark past which should be cleared off. But Chinese Traditional Medicine has been reevaluated as a national medicine and spreaded quickly since the 1949 Communist Revolution. Moreover, 'the bare foot doctor' who received short term training appeared during the Cultural Revolution. It enhanced the status of Chinese Traditional Medicine. At the same time, it was estimated as a model of the self-reliant development of Third World countries. But the direction of development of Chinese Traditional Medicine was changed again recently. Chinese government has adapted the open-economy policy since the late 1970s. Accordingly Chinese Traditional Medicine also has been changed. Nowadays it pursues the professional development strategy. This paper inquired the following research questions. First, what kind of historical changes in the development strategy of Chinese Traditional Medicine has happened? Second, how much Chinese Traditional Medicine has accomplished the professionalization? Third, what kind of problems Chinese Traditional Medicine has met in the process of professionalization? Finally, why Chinese Traditional Medicine has adapted the professional development strategy?