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대형공공공사에 J/V(Joint Venture)시스템의 합리적 도입을 통한 건설사업 효율화 전략
이태식(Lee Tai Sik),김용천(Kim Yong Chan),박동찬(Park Dong Chan),선우강(Sun woo Kang),김열규(Kim Yul Kyoo) 한국철도학회 2001 한국철도학회 학술발표대회논문집 Vol.- No.-
Despite of the introduction some sorts of the contract and the bid method like CM(Construction management) that will be efficient to manage the construction project. Korean agencies limit to control project management to do large public constructions. In the case of Taiwan, THSRC is apply J/V system in the public construction project, they are accomplishing that expend optimal the cost and save the construction time. To success JV it has two factors, one is risk management and another is sharing information of construction project. Therefore, we will study to introduce JV system to our construction project.
Development of End-milling Inspection System Using 450㎸p Tube Voltage
Moon-Chul Yoon(윤문철),Jin-Seok Jung(정진석),In-Ho Hwang(황인호),Sun-Woo Yuk(육선우),Su-Kang Park(박수강),Do-Hun Chin(진도훈) 한국기계가공학회 2009 한국기계가공학회지 Vol.8 No.2
Transillumination system used by radiation is widely applied to industrial imaging system. In this study, the linear detector array constructed with scintillator and pin diode, and a multi-channel data acquisition system was developed for precision inspection of end-milling. The detector module consists of 16-CdWO₄ crystal scintillator and photodiode array. The detector and data acquisition system was applied to precision inspection of end-mill and the images of the end-mill were successfully reconstructed. The total system can analyze the Detector Quantum Efficiency(DQE) of each system. The performance of developed photodiodes equipment was compared with each other for different crystal geometry and its characteristics. Finally fine details of the end-mill phantom were constructed for industrial application. The image acquired contains several objects on a real time data transfer and the linear X-ray scanning system can be applied to many fields of a industry.