• Title, Summary, Keyword: Performance Monitoring

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Development of Mobile Performance Management System Using Real-Time Monitoring Method (실시간 모니터링 기법을 이용한 모바일 성능 관리 시스템 개발)

  • Jeong, Taeg-Won;Lee, Chul-Han;Lee, Chong-Deuk
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.10 no.8
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    • pp.1894-1902
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    • 2009
  • As the spread of LBS(Location Based Service), MDT(Mobile Data Terminal) and PDA (Personal Digital Assistant) services using mobile terminals, various systems are under development to to manage the performance of these services. This paper describes a mobile performance management system which is implemented to test the performance of mobility between the user and the terminal or between the terminal and the mobile server automatically in the mobile-user field. The system has four modules: scenario management module, MDT monitoring, LBS monitoring, and PDA monitoring. The scenario management module manages the performance by monitoring all modules. The LBS monitoring module monitors LBS call attempt stage, call connecting stage, and LBS test for established connection. Thus, the LBS monitoring module manages the performance for every stage of the call. The MDT monitoring module monitors the performance according to the input command and the PDA monitoring module monitors according to the input from the set up and the execution menu.

An Effective Multivariate Control Framework for Monitoring Cloud Systems Performance

  • Hababeh, Ismail;Thabain, Anton;Alouneh, Sahel
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.13 no.1
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    • pp.86-109
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    • 2019
  • Cloud computing systems' performance is still a central focus of research for determining optimal resource utilization. Running several existing benchmarks simultaneously serves to acquire performance information from specific cloud system resources. However, the complexity of monitoring the existing performance of computing systems is a challenge requiring an efficient and interactive user directing performance-monitoring system. In this paper, we propose an effective multivariate control framework for monitoring cloud systems performance. The proposed framework utilizes the hardware cloud systems performance metrics, collects and displays the performance measurements in terms of meaningful graphics, stores the graphical information in a database, and provides the data on-demand without requiring a third party software. We present performance metrics in terms of CPU usage, RAM availability, number of cloud active machines, and number of running processes on the selected machines that can be monitored at a high control level by either using a cloud service customer or a cloud service provider. The experimental results show that the proposed framework is reliable, scalable, precise, and thus outperforming its counterparts in the field of monitoring cloud performance.

Evaluation of Structural Integrity and Performance Using Nondestructive Testing and Monitoring Techniques

  • Rhim, Hong-Chul
    • Journal of the Earthquake Engineering Society of Korea
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    • v.2 no.3
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    • pp.73-81
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    • 1998
  • In this paper, the necessity of developing effective nondestructive testing and monitoring techniques for the evaluation of structural integrity and performance is described. The evaluation of structural integrity and performance is especially important when the structures and subject to abrupt external forces such as earthquake. A prompt and extensive inspection is required over a large area of earthquake-damaged zone. This evaluation process is regarded as a part of performance-based design. In the paper, nondestructive testing and monitoring techniques particularly for concrete structures are presented as methods for the evaluation of structural integrity and performance. The concept of performance-based design is first defined in the paper followed by the role of evaluation of structures in the context of overall performance=based design concept. Among possible techniques for the evaluation, nondestructive testing methods for concrete structures using radar and a concept of using fiber sensor for continuous monitoring of structures are presented.

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Cloud monitoring system for assembled beam bridge based on index of dynamic strain correlation coefficient

  • Zhao, Yiming;Dan, Danhui;Yan, Xingfei;Zhang, Kailong
    • Smart Structures and Systems
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    • v.26 no.1
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    • pp.11-21
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    • 2020
  • The hinge joint is the key to the overall cooperative working performance of the assembled beam bridge, and it is also the weakest part during the service period. This paper proposes a method for monitoring and evaluating the lateral cooperative working performance of fabricated beam bridges based on dynamic strain correlation coefficient indicator. This method is suitable for monitoring and evaluation of hinge joints status between prefabricated girders and overall cooperative working performance of bridge, without interruption of traffic and easy implementation. The remote cloud monitoring and diagnosis system was designed and implemented on a real assembled beam bridge. The algorithms of data preprocessing, online indicator extraction and status diagnosis were given, and the corresponding software platform and scientific computing environment for cloud operation were developed. Through the analysis of real bridge monitoring data, the effectiveness and accuracy of the method are proved and it can be used in the health monitoring system of such bridges.

Development and Effects of Supplementary Material about Electronic Fetal Monitoring for Nursing Students (간호대학생을 위한 전자태아감시 자가학습 교재의 개발 및 적용효과)

  • Yeom, Gye Jeong;Kim, Il-OK
    • Korean Journal of Women Health Nursing
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    • v.22 no.1
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    • pp.21-29
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    • 2016
  • Purpose: This study aimed to develop supplementary material about the electronic fetal monitoring for nursing students, and to test the effects on electronic fetal monitoring related knowledge and confidence on nursing performance in delivery room. Methods: Totally 58 nursing students were recruited either experimental group (n=30) or a control group (n=28). A non-equivalent control group pretest-posttest design was employed to test the effects on fetal monitoring related knowledge and confidence on nursing performance in delivery room. The supplementary material about the electronic fetal monitoring was developed based on Analysis, Design, Development, Implement and Evaluation (ADDIE) model. Fetal monitoring related knowledge and confidence on nursing performance in delivery room were self-reported by the scales that author developed. Data were collected at pre-test and after the 6-week intervention. Results: There was significant difference in confidence on nursing performance in delivery room between two groups after intervention. Conclusion: These findings suggest the importance of the supplementary material about the electronic fetal monitoring for nursing students to improve confidence on nursing performance in delivery room.

Design of Multicast Performance Monitoring Architecture on 3D Cyber Museum Service (30 Cyber Museum Service의 Multicast performance Monitoring 구조 설계)

  • 조중근;박인수;박용진;권용무
    • Proceedings of the Korean Information Science Society Conference
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    • pp.313-315
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    • 2002
  • 본 논문에서는 3D Cyber Museum Service에서의 효과적인 Multicast performance monitoring을 위한 receiver 기반의 분산 모델을 제안한다 멀티캐스트 네트워크를 통해 전송되는 멀티미디어 서비스의 효과적인 performance monitoring을 위해서 사용자들이 경험하는 QoS를 사용자의 호스트상에서 보다 직접적으로 측정하고, 멀티캐스트를 사용함으로써 얻어지는 대역폭의 효율적인 사용에 대한 측정을 위한 모델을 설계한다.

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Study of Performance Criteria Methodology for Maintenance Effectiveness Monitoring Program for Nuclear Power Plants (원전 정비효과성감시 프로그램의 성능기준설정 방법론 개선)

  • Song, Tae-Young;Yeom, Dong-Un;Hyun, Jin-Woo
    • Transactions of the Korean Society of Pressure Vessels and Piping
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    • v.8 no.2
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    • pp.26-32
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    • 2012
  • The systems of the nuclear power plant are designed based on the User Requirement Document, and Korea Hydro & Nuclear Power Co. (KHNP) implements preventive maintenance activities to keep the specific design function of the system consistently. To monitor the preventive maintenance effectiveness, KHNP has also developed maintenance effectiveness monitoring (MR) program based on NUMARC 93-01 since 2003, and has implemented the program in all operating plants. Recently, KHNP has upgraded MR programs by reflecting implementing experiences ; reestablishing the performance monitoring level, improving analysis for standby function and performance criteria for passive components, reestablishing the availability performance criteria and the performance criteria for the same type of components. These upgraded MR programs will contribute to enhance safety and improve equipment reliability through monitoring maintenance effectiveness.

Application Study of Condition Monitoring Technology for Emergency Diesel Generator at Nuclear Power Plant (원자력발전소 비상디젤발전기 상태감시 기술 적용 연구)

  • Choi, K.H.;Park, J.H.;Park, J.E.;Lee, S.G.
    • Journal of Power System Engineering
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    • v.13 no.1
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    • pp.53-58
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    • 2009
  • The emergency diesel generator(EDG) of the nuclear power plant is designed to supply the power to the nuclear reactor on Station Black Out(SBO) condition. The operation reliability of onsite emergency diesel generator should be ensured by a conditioning monitoring system designed to monitor and analysis the condition of diesel generator. For this purpose, we have developing the technologies of condition monitoring for the wolsong unit 3&4 standby diesel generator including diesel engine performance. In this paper, technologies of condition monitoring for the wolsong standby diesel generator are described about three step. First is for selection of operating parameter for monitoring. Second is for technologies of online condition monitoring, Third is for monitoring of engine performance.

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The Development of the Monitoring System for Wind resource measurement in onshore wind energy experimental research complex (육상풍력실증연구단지 풍황계측 모니터링 시스템 개발)

  • Ko, Seok-Whan;Jang, Moon-Seok;Lee, Youn-Seop
    • 한국태양에너지학회:학술대회논문집
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    • pp.277-280
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    • 2009
  • Wind monitoring system is an absolutely-required system for assessing a performance and fatigue load of the wind energy generator in an on-shore wind energy experimental research complex. It was implemented for the purpose of monitoring the wind information measured from a meteorological tower at the monitoring house and of utilizing the measured data for the performance assessment, by using the LabVIEW program. Then, by adding the performance assessment-related data acquired from the wind energy generator during the performance assessment and the data recorder for synchronizing the data of meteorological tower, the system was implemented. Because it transmitted the data by converting the output 'RS-232' of data logger which measures the wind condition into CAN protocol, the data error rate was minimized, This paper is intended to explain the developed wind data monitoring system.

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A Study of Performance Monitoring and Diagnosis Method for Multivariable MPC Systems

  • Lee, Seung-Yong;Youm, Seung-Hun;Lee, Kwang-Soon
    • 제어로봇시스템학회:학술대회논문집
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    • pp.2612-2616
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    • 2003
  • Method for performance monitoring and diagnosis of a MIMO control system has been studied aiming at application to model predictive control (MPC) for industrial processes. The performance monitoring part is designed on the basis of the traditional SPC/SQC method. To meet the underlying premise of Schwart chart observation that the observed variable should be univariate and independent, the process variables are decorrelated temporally as well as spatially before monitoring. The diagnosis part was designed to identify the root of performance degradation among the controller, process, and disturbance. For this, a method to estimate the model-error and disturbance signal has been devised. The proposed methods were evaluated through numerical examples.

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