• Title/Summary/Keyword: SCp

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GPS Gravity Surveying for the Terrain Analysis at the Choogaryeong Rift Valley between Seoul and Cheolwon (서울-철원간 추가령곡의 지형분석을 위한 GPS 중력측정)

  • 이창호
    • Economic and Environmental Geology
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    • v.32 no.3
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    • pp.281-291
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    • 1999
  • This study presents the gravity data with GPS survrying and the geophysical profiles at the Choogaryeong Rift Valley. And in determing geoid by GPS measurement, survey control points (SCP) whoch built by the Republic of Korean Army are used. Seventy nine SCP and the two triangulation stations are reviewd by GPS. Digital terain model is under for terrain analysis. The analyses of the gravity surveying with GPS are as follows. The low values of the negative Bouguer anomalies represent the high elevation terrain. The Bouguer anomalies show the decrrasing trend toward the eastern part of the study area. Characteristics of free-air anomalies are related with terrain elevation. The regional gravity anomalies decreas toward the eastern part of the study area. The trends of variations are associated with the thermotectonic and geologic structure beneath the Choogaryeong Rift Valley. The most parts of the study area represent negative residual gravity anomalies due to the low dencity of sedimentary cover in the Rift Valley. There are three valleys and four mountains in the direction of NE-SW or NNE-SSW which are structured by the geological features.

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Monitor Unit calculation through Excell program (Excell 프로그램을 통한 치료선량(M. U) 계산)

  • Lim, Guang-Chae;Cho, Eun-Ju;Cho, Sun-Hang
    • The Journal of Korean Society for Radiation Therapy
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    • v.11 no.1
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    • pp.28-32
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    • 1999
  • Verifying the treatment value(Monitor Unit) unnecessarily involves too many simple and repetitive calculation processes, that is, individual computation process using the data(PDD value, Scp Factor, SSD Factor, Tray Factor) on the data book. We intend to minimize the time required to check the Monitor Unit through computerized calculation. Using $^{\ast}(multiplication)$, /(division), +(sum), if function, among others, which are present in the Excell program, MS office program, the Monitor Unit was obtainable through A/P value, Scp Factor and PDD value, Wedge Factor. From the verification of the computations of Monitor Unit for 60 patients previously treated, we were able to obtain an error rate of ${\pm}0.028MU$. Computerized calculation of the Monitor Unit could save the burden of Technologist.

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A Comparison of Decentralized and Partially Observed Supervisors: Application to a CIM Testbed (분산 감독제어기와 부분관측 감독제어기의 비교: CIM Testbed 응용)

  • Son, Hyoung-Il;Lee, Suk
    • Journal of Institute of Control, Robotics and Systems
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    • v.14 no.11
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    • pp.1155-1164
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    • 2008
  • Supervisory control theory, which was first proposed by Ramadge and Wonahm, is a well-suited control theory for the control of complex systems such as semiconductor manufacturing systems, automobile manufacturing systems, and chemical processes because these are better modeled by discrete event models than by differential or difference equation models at higher levels of abstraction. Moreover, decentralized supervisory control is an efficient method for large complex systems according to the divide-and-conquer principle. Decentralized supervisors cannot observe the events those of which occur only within the other supervisors. Therefore decentralized supervisors can be designed according to supervisory control theory under partial observation. This paper presents a solution and a design procedure of supervisory control problem (SCP) for the case of decentralized control and SCP under partial observation (SCPPO). We apply the proposed design procedure to an experimental CIM Testbed. And we compare and analyze the designed decentralized supervisors and partially observed supervisors.

Experimental Study on Consolidation and Bearing Capacity Characteristics of Marine Large Pack Pile (MLPP 공법의 압밀 및 지지력 특성에 관한 실험적 연구)

  • Lee, Sang-Ik;Park, Yong-Won;Ihm, Chul-Woong;Kim, Il-Gon
    • Proceedings of the Korean Geotechical Society Conference
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    • 2005.03a
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    • pp.272-279
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    • 2005
  • This paper introduces a new method of improvement for marine soft ground, MLPP(Marine Large Pack Pile). The MLPP is a reinforcement technique for the conventional SCP or GCP piles by confining with geotextile pack. A pilot project at Busan New Port site and laboratory model tests were carried out to investigate the settlement reduction and bearing capacity enhancement effect of pack pile. The results of field and laboratory tests show that MLPP method can be a safe and economic alternative method for SCP and GCP.

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Evaluation of Stability about Lateral Soil Movement of Bridge Abutment Constructed on Soft Ground (연약지반 위에 시공되는 교대의 측방유동에 대한 안정성 평가)

  • Yoo, Nam-Jae;Kim, Dong-Gun;Jeon, Sang-Hyun
    • Journal of Industrial Technology
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    • v.30 no.B
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    • pp.25-32
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    • 2010
  • In this paper stability about lateral soil movement of bridge abutment constructed on the soft ground, reinforced with the sand compaction pile (SCP) and the preconsolidaton methods, was evaluated by using the centrifuge testing facility which stress conditions in field could be reconstructed in the laboratory. The layouts of model such as ground condition, sand compaction piles and abutment was determined on the basis of similitude law with the reduced scale of 1/200. Construction sequences of installing SCP, preparing reclaimed ground, preconsolidating ground and building the piled bridge abutment were reconstructed during centrifuge modelling and measurements of movement were followed in each sequence. From analyzing the results of measuring movements of the model abutment and the ground, measured lateral movement of model abutment was found to be within the allowable value so that stability of abutment against lateral sliding was secured.

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A Study on the Number Portability Application Protocol over Intelligent Networks (지능망의 번호이동성 응용프로토콜에 관한 연구)

  • Jng, Jong-Whan
    • The Journal of Engineering Research
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    • v.3 no.1
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    • pp.79-84
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    • 1998
  • This paper studies application protocol for local number portability(LNP) between SSP(Service Switching Point) and SCP(Service Control Point) when users switching from one telecommunication carrier to another in local area. Here, this paper considers that LNP uses CS-1 standard of IN(Intelligent Nework). So, this paper will propose application protocol for LNP when used IN.

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Reduction of Drawing Process in Warm Forming Steel Sheets using Oil Pan (온간성형공법을 이용한 오일팬 드로잉공정 단축)

  • 최이천
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 1999.03b
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    • pp.88-94
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    • 1999
  • This study is to investigate the effects of warm deep drawing with steel sheets of SCP3C and SCP1 for improving deep drawability. Experiments were carried out in various working conditions such as forming temperature and lubricantion. The effect of lubricantion and temperature on drawabillity of steel sheets as well as thickness distribution of drawn oil pan were examined and discussed. One step forming at room temperature and uniform distribution of thickness was achieved at optimum formability for lubricantion. The optimum forming temperature was obtained that both the die and the blankholder were heated to 10$0^{\circ}C$ while the punch was cooled by circulating coolant of $0^{\circ}C$.

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