• Title/Summary/Keyword: Data feedback

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Development of Pre-training Program for Internship or Field Training for Engineering College Students (공과대학 학생들을 위한 인턴십 및 현장실습 사전교육 프로그램 개발)

  • Han, Jiyoung;Bang, Jae-hyun
    • Journal of Engineering Education Research
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    • v.18 no.4
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    • pp.3-12
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    • 2015
  • The purpose of this study was to develop a pre-training program of engineering college students for maximizing the effectiveness of internship or field training. To pursue this goal, literature review was conducted for data collection about college and corporate pre-training program for internship or field training and pre-training program(draft) was proposed. A questionnaire survey was conducted with engineering professors, students and graduates to identify the needs for pre-training program(draft) for internship or field training. Based on the results, the contents of pre-training program for internship or field training were composed of basic liberal arts, basic competency, real information related with corporation or job, and information exchange network. And key consideration for operating the pre-training program for internship or field training were proposed with the management department, regulation for the obligatory participation, meaningful organizing content, feedback of needs.

Development of automatic flow control system for the practice of Ziegler-Nichols and Cohen-Coon control theory (Ziegler-Nichols와 Cohen-Coon 제어 이론의 실습을 위한 자동 유량제어 시스템의 구축)

  • Kang, Tae-Won;Lee, Ho-Gyun
    • Journal of Engineering Education Research
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    • v.20 no.4
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    • pp.61-66
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    • 2017
  • Automatic flow control system composed by hardware and software was designed and fabricated to be used as teaching tool of feedback control theory in university experimental class. This system includes hardwares like data acquisition board, flow measuring device, transmitters, and the pneumatic valve, and software like LabView program for the monitoring and control of flow rates. The system was designed as the student can see the control effect of not only set point but also disturbance changes. Also the LabView program was composed for the calculation of controller parameters of both Ziegler-Nichols and Cohen-Coon tuning. The students can apply both tuning constants and compare the control performances. This system will provide the easy way for the students to understand the function and specification of control hardwares, and to raise the programing ability of control software.

An Empirical Study on Factors for Effective Total Quality Management Education (효과적인 종합적 품질경영(TQM)교육 실행의 성공요인에 관한 연구)

  • 서창적;김재환
    • Journal of Korean Society for Quality Management
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    • v.28 no.3
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    • pp.68-81
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    • 2000
  • In this paper, we studied the four stages of quality related education and training and identified alignment factors that have influence on successful TQM education and training. Based on extensive literature reviews the four stages are extracted such as quality concepts training, quality tools training, special topics training, and leadership training. Also we determine the alignment factors. A framewok of research model including above factors is developed and tested statistically. The perceived data are collected from managers of quality departments of 140 Korean firms through survey. The results show that alignment factors which achieve success in Quality related education training are using relevant examples and implementing training at the top in quality concepts training, providing time and opportunity to master skills in quality tools training, organizing courses into a logical curriculum in special topics training, and providing ongoing feedback in leadership training. We also offered numerous suggestions that can help organizations develop effective training programs to meet their objectives.

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The effects of job characteristics on service quality (종업원의 직무특성이 서비스품질에 미치는 효과)

  • Ahn, Kwan-Young;Bae, Hong-Gyun
    • Proceedings of the Korean Society for Quality Management Conference
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    • 2007.04a
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    • pp.444-448
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    • 2007
  • The purpose of this research is to test the effects of employee perceived job characteristics on service quality. Empirical analysis was based on the data of 692 hotel employees from Seoul and Gyung-gi province. To test the relationship between job characteristics and service quality, multiple regression analysis was applied, and hierarchial regression analysis(Cohen & Cohen, 1983) applied to test the moderating effects of gender and tenure. Multiple regressional analysis showed that job importance, job variety, and feedback had an affirmative impact on tangibility, reliability, responsiveness, assurance, empathy, but autonomy had a negative impact on tangibility, reliability, responsiveness, assurance.

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Design and Evaluation of a Vibration Exciter for the Flow Resonance (유동공진을 위한 가진기 설계 및 평가)

  • Nam, Yoon-Su;Choi, Jae-Hyuck
    • Journal of the Korean Society for Precision Engineering
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    • v.18 no.6
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    • pp.141-147
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    • 2001
  • A heat dissipation technology using flow resonant phenomenon is a kind of new concept in heat transfer area. A vibration exciter is needed to generate an air turbulence which has the natural shedding frequency of a heat system. A mechanical vibrating device for the air flow oscillation is introduced, which is driven by a moving coil actuator. An analytical dynamic model for this mechanical vibration exciter is presented and its validity is verified by the comparison with experimental data. Values of some unko주 system parameters in the analytic model are estimated through the system identification approach. based on this mathematical model, a high bandwidth vibration exciter is designed using feedback control. During the experimental verification phased, it turns out the high frequency modal resonant characteristics of vibrating plate are the major barrier against obtaining a high bandwidth vibration exciter.

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A Study on the Two-dimensional Formation Control of Free Surface of Magnetic Fluid by Electromagnetic Force (전자기력에 의한 자성유체의 2차원 자유표면 형상 제어에 관한 연구)

  • Bae Hyung-Sub;Yang Taek-Joo;Lee Yuk-Hyung;Joo Dong-Woo;Park Myeong-Kwan
    • Journal of the Korean Society for Precision Engineering
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    • v.22 no.3 s.168
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    • pp.29-37
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    • 2005
  • In this study, the control of the free surface deformation of a magnetic fluid for the change in electromagnetic force is discussed. The free surface of magnetic fluid is formed by the balance of surface force, gravity, pressure difference, magnetic normal pressure and magnetic body force. Magnetic fluid in characteristics of fluid adjusted to the opposite direction of the gravity direction. Thus, the device of a magnetic fluid proposed the complete zero-leakage sealing, oscillator for surface control, boundary layer control, MHD, flow control, flow using magnetic levitation system and surface actuator. This study show the deformation of surface rise due to the intensity of the magnetic field and possibility of two-dimensional control of magnetic fluid through the feedback data of hall sensor.

Developing SPC System of an Automobile Parts Manufacturing Firm under POP System Environment (POP시스템 환경하의 자동차부품 제조업체의 SPC시스템 개발)

  • 이진춘;김정만;김오환
    • Journal of Korea Society of Industrial Information Systems
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    • v.4 no.3
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    • pp.8-14
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    • 1999
  • SPC(Statistical Process Control) provides objective means of controlling quality in any transformation processes by analyzing statistically data gathered in the process. Considering the fact that a measure to feedback results of the process investigation in the real time is required, it is very practical to construct the SPC system as a module of the POP(Point of Production) system. Because this approach can make the investment cost reduced and achieve goals of production/process control and SPC simultaneously. This paper designed and developed the SPC system of firm S that manufactures automobile parts

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Sweet Area Determination by Performance Sensitivity Analysis for an Automotive Vehicle Suspension (자동차용 현가장치의 성능감도해석에 의한 안정승차영역의 결정)

  • Park, Ho;Hahn, Chang-Su;Kim, Byeong-Woo;Kim, Dong-Gyu
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.12 no.1
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    • pp.92-100
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    • 2003
  • Using a quarter car model, an analytic method for performance estimation of a vehicle suspension system with respect to frequency response, RMS response and performance index is presented. From frequency response function, compromization of response performance to the whole frequency range is verified and from RMS response and performance index, sensitivity of ride md handling characteristics are examined. Using a full car model, sweet area(stable ride area) are determined and performance sensitivity is estimated according to the change of feedback gains. In order to esimate the output sensitivity, response we is displayed using a 3-dimensional contour plot. Design data n suggested for optimal design parameter esimation, which maximize the performance of the given suspension system.

A Design and Implementation of VOD Service System with Off-line Search Function (오프라인 검색기능을 가진 주문형 비디오 서비스 시스템 설계 및 구현)

  • 이혜정;박두순
    • Journal of Korea Multimedia Society
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    • v.4 no.3
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    • pp.205-214
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    • 2001
  • As the real time multimedia data service has become available due to the rapid progress of computer and Internet technology, the users can enjoy the newly developed service, which is called Video On-Dem-and(VOD). However, most of service providers have not paid their attention much on the software for various service modes on VOD, but they are only concentrating un the hardware to provide with the high resolution video display. Therefore, the service providers are recently to pay more attention on the software to cope with the various demands of users than hardware. So this paper has designed and implemented the VOD service system for those demands. Since the VOD service system suggested by this paper enable off-line search functions through E-mail, the users can possibly get the necessary information from off-line Search without connecting to the server while the current VOD service can prominently help users to save the time and effort to sea고 and select the Video contents by using periodical current awareness service supported by PUSH technology and user oriented information booking and feedback service supported by SDI service.

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생산공장용 무궤도 무인운반차 개발

  • 한석균;김용일;강무진
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2001.10a
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    • pp.286-290
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    • 2001
  • This paper presents a full-digital low-level controller for a robotic material transfer system which has been developed for a computer-integrated manufacturing model plant. Compared to conventional analog or hybrid type controllers in current industrial environments, this controller system has some advantages such as strong noise-immunity, easy control algorithm implementation, etc The servo-controller consists of two modules, a position controller and a DC servo motor driver. The position controller operates position feedback routines by receiving position encoder data and sending control outputs to the driver. The position controller is implemented in a full-digital way using a recently introduced microcontroller. The DC servomotor driver controls speeds and torques. The driver consists of a micro-controller and insulated-gate-bipolar-transistors (IGBT). The micro-controller provides control signals, and the IGBT's amplifies the control signals and sends them to the motor.