• Title/Summary/Keyword: Supervising Engineers

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How Much does Job Autonomy Matter for Job Performance of Chinese Supervising Engineers: A Quantitative Study

  • CUI, Nan;XIAO, Shu-Feng
    • East Asian Journal of Business Economics (EAJBE)
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    • v.9 no.3
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    • pp.71-82
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    • 2021
  • Purpose - The purpose of this study is to examine the intermediary role of job satisfaction between job autonomy and job performance and whether the process was adjusted based on the work context. Research design, data, and methodology - This study was conducted by sample survey method on 334 supervising engineers. Data analysis methods were frequency analysis, confirmatory factor analysis, reliability analysis, correlation analysis, and structural equation model analysis. Result - The results of this study suggest that: (1) after controlling for age, position, and working years, job autonomy had a significant positive impact on job performance, (2) job autonomy can not only directly affect job performance but also indirectly affect performance through job satisfaction, (3) job satisfaction has an intermediary effect on job autonomy and job performance, and (4) the relationship between job autonomy and job satisfaction is moderated by the work context, and the result showed a negative moderating effect. Conclusion - This study suggests that job autonomy significantly improves job performance, and the higher job autonomy a supervising engineer has, the more satisfied they are with their work, thus enriching the precursor research on dynamic changes in job performance. When the working environment is poor, supervisors are more sensitive to the perception of job autonomy and have a stronger impact on job satisfaction and performance.

The Construction of DAS System for Supervising of Power System Simulator (시뮬레이터 감시를 위한 DAS 시스템의 구축)

  • Choi, Sang-Bong;Moon, Young-Whan;Sung, Kee-Chul
    • Proceedings of the KIEE Conference
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    • 1996.07b
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    • pp.922-924
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    • 1996
  • This paper presents the construction of Digital DAS system for supervising of power system simulator (KERISIM) which is developed in KERI. This system is composed of input transducer, input conditioner and digital supervisor. In order to watch P,Q,V,I, Power Factor and RMS in KERISIM successively, Digital arithmetic algorithm is accomplished to calculate Real/Reactive power from voltage/current data which is transferred by secondary part of CT/PT in simulator.

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Knowledge Engineering Approach to Supervising Train and Signalling Devices Operation (지식공학적기법에 의한 열차운행 및 신호설비 정상상태 감시기법)

  • Choi, Kyu-Hyoung
    • Proceedings of the KIEE Conference
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    • 2002.07b
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    • pp.1278-1279
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    • 2002
  • 열차운행에 따른 신호설비 동작상태의 이상여부를 효과적으로 감시하고 신호설비의 고장 발생시 이를 신속하게 검출하여 그 원인을 진단함으로써 유지보수 고도화를 구현하기 위하여, 열차운행상황 및 신호설비 동작상태에 관한 방대한 데이터들을 효과적으로 분석 정리하기 위한 지식공학적 기법을 제안한다.

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The study on the Master Station Configuration of Distribution Automation System in the medium/small scale (중소규모 배전자동화시스템의 중앙제어장치 구성에 관한 연구)

  • Kim, Yong-Pal;Kim, Myong-Soo
    • Proceedings of the KIEE Conference
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    • 1998.07g
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    • pp.2396-2398
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    • 1998
  • The Distribution Automation System(DAS) Master Station(MS) is the core of the system, which has the functions of supervising, data acquisition, processing and man-machine interface. In this paper, we suggested the optimal configuration of the medium/small scale DAS MS in accordance with the consideration of various requirements such as reliability, scalability flexibility, etc.

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A Study on the Actual Condition of Electrical Construction Supervision and Countermeasure of It (전기분야감리제도의 운영실태 및 개선방안에 관한 연구)

  • 고선환;장우진
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2002.11a
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    • pp.147-150
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    • 2002
  • Domestic electrical construction inspection system was introduced into building site in 1963 by registered architects' law, meanwhile, inspector appointed by ministry of owners lake charge of Government managing building site. Afterwards several systems has been adopted to heal some problems each of them has revealed. These times Government granted authority for inspection on surveillancer, furthermore, formulate a supervising system which articulate the responsibilities of supervision and put it in effect as of 1st, January, 1994. This supervision system gets rid of factors causing faulty work to a considerable extent. However, as it is still in early stage, the system has various problems to overcome, For example, actual state of handling modifications of design in accordance with supervision system in field shows a difference between process provided by law and field process. Thus this study inquire and analyze actual condition of supervision system, at the same time, problems occuring in modifications of design under supervision, and then propose a way to improve it

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A Study of Decreasing Critical Disaterous Accidents in Small Construction Sites (소규모 건설현장의 중대재해 저감 방안 도출을 위한 연구)

  • Paik, Sin-Won;Kim, Han-Joong;Choi, Don-Heung
    • Journal of The Korean Society of Agricultural Engineers
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    • v.54 no.6
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    • pp.121-131
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    • 2012
  • Many of the falling which is the number one risk factor in lethal accidents in construction could have been prevented if the right activity or supervising had been taken in time. All other measures do not preventive the fall, but rather intercept the fallen itself or preventive severe injury. The most common and the bets measures on the preventive measures are guardrails which are to be worn on the site. Workers always exposed the risk of serious accidents induced by causal effects related with environments around construction sites. In order to represent how to decrease the risk of workers, this study was accomplished with a number of interview with experienced site director, cheief of instructors, workers. And the questionaire survey (2012. 5~2012. 10) were used to make proposed policies which are expected to reduce critical disastrous accidents and strength authorized limits of director's management automatically.

A Study on Evaluation of an Automatic Tool Compensation System in CNC Machine Tool (CNC 공작기계에서의 자동공구 보정시스템의 평가에 관한 연구)

  • 정상화;신현성;김현욱
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2001.04a
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    • pp.371-375
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    • 2001
  • The tool wear that is developed by long-term machining in mold manufacturing with machining center makes a severe influence to the accuracy and the surface roughness. In this reason, tool-wear supervising system which has guaranteed high accuracy and high speed is needed to improve the measurement quality. Touching probe and touch sensor are widely used to measure the tool profile at on-machine measurement. In this paper, using the newly developed electric touch point measuring system, the Automatic Tool Compensation System is developed to correct the error of tool diameter resulted from the wear, and the operating method of this system is also provided.

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Development of an Automatic Tool Compensation System for M/C (머시닝센터용 자동공구보정시스템의 개발)

  • 정상화;신현성;김현욱
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.10 no.4
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    • pp.48-54
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    • 2001
  • The tool wear that is developed by long-term machining in mold manufacturing with machining center makes a severe influence to the accuracy and the surface roughness. in this reason, tool-wear supervising system which has guaranteed high accuracy and high speed is needed to improve the measurement quality. Touching probe and touch sensor are widely used to measure the tool profile at on-machine measurement. In this paper, using the newly developed electric touch point measuring system, the Automatic Tool Compensation System is developed to correct the error of tool diameter resulted from the wear, and the operating method of this system is also provided.

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A Directional Relay Algorithm Using Positive-Sequence Superimposed Quantity for Transmission Line Protection (정상 성분 변화량을 이용한 송전선로 보호용 방향 계전 알고리즘)

  • 이명수;유석구
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.52 no.4
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    • pp.226-233
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    • 2003
  • Directional elements are fundamental to protection scheme security and selectivity, performing such critical tasks as supervising distance elements and controlling overcurrent elements. But, conventional operating principles for directional detection based on negative or zero sequence quantify do not satisfy the requirements for improved sensitivity and fast operation under any fault conditions. In this paper, new algorithm for directional elements is proposed. The proposed algorithm use the positive-sequence superimposed voltages and currents in order to be used in all fault conditions. Also, because this algorithm uses a voltage compensation method. it can be well operated under strong source conditions.

A Leakage Current Supervising Control and Data Acquision in the Building based on Embedded System (임베디드 시스템을 이용한 빌딩 누전감시 시스템)

  • Shin, Seung-Woo;Yu, Jong-Il;Chang, Kyung-Bae;Shim, Il-Joo;Park, Gwi-Tae
    • Proceedings of the KIEE Conference
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    • 2004.07d
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    • pp.2457-2460
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    • 2004
  • As the usage of electron electricity is rapidly increasing, corresponding accidents also take place proportionately. Although various losses occur very often because of senility of system and maintenance, only a earth leakage current breaker by a leakage current alert is used. That means it is always fraught with dander. This paper, we propose to measure and cut a leakage current and method of taking a measurement current short circuit. Besides, through keeping watch communication with server, prevent electric loss and mishap in advance.

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