• Title/Summary/Keyword: measurement methodology

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A Methodology for Performance Modeling and Prediction of Large-Scale Cluster Servers (대규모 클러스터 서버의 성능 모델링 및 예측 방법론)

  • Jang, Hye-Churn;Jin, Hyun-Wook;Kim, Hag-Young
    • Journal of KIISE:Computing Practices and Letters
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    • v.16 no.11
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    • pp.1041-1045
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    • 2010
  • Clusters can provide scalable and flexible architectures for parallel computing servers and data centers. Their performance prediction has been a very challenging issue. Existing performance measurement methodologies are able to measure the performance of servers already constructed. Thus they cannot provide a way to predict the overall system performance in advance when designing the system at the initial phase or adding more nodes for more capacity. Therefore, the performance modeling and prediction methodology for large-scale clusters is highly required. In this paper, we suggest a methodology to predict the performance of large-scale clusters, which consists of measurement, modeling and prediction steps. We apply the methodology to a real cluster server and show its usefulness.

A Delphi Approach to the Development of an Integrated Performance Measurement and Management Model for a Car Assembler

  • Shawyun, Teay
    • Industrial Engineering and Management Systems
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    • v.7 no.3
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    • pp.214-227
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    • 2008
  • Today's dynamic competitiveness requires an organization to improve its performance measurement and management. Quality Management Systems (QMS) abound, the main ones being: ISO series, Malcolm Baldridge National Quality Award (MBNQA), European Forum for Quality Management (EFQM), Six Sigma Business Scorecard and the Balanced Scorecard. Based on the literature, the IPMMM (Integrated Performance Measurement and Management Model) identified 7 key synthesized factors: leadership, strategy management and policy, customer and market, learning and growth, partnership and resources, internal processes and business results that are employed to investigate the key performance indicators of a car assembler using the Delphi methodology. In the 2 rounds of Delphi panels consisting of 20 senior management personnel, the $1^{st}$ round of 198 indicators in the IPMMM yielded 90 indicators. The $2^{nd}$ round yielded 43 performance indicators with 18 rated as critical based on the % assigned in the $1^{st}$ and $2^{nd}$ priority rating of "very important factor" and "key performance indicator" that must be ranked high on both of the priorities. The very critical indicators appeared to be: defect percentage and first time capability (tie in $1^{st}$ place) and revenue, goal setting, customer satisfaction index, on-time delivery, brand image, return on investment, Claim Occurrence Ratio, and debt being ranked from $3^{rd}$ to $10^{th}$. It can be surmised that an organization can identify and develop an appropriate set of performance indicators through the Delphi methodology and implement and manage them based on the Balanced Scorecard.

A Study on Factors and Measurement Methodology on Workers' Work Competence Levels for Sustainable Management in ICT Organization (ICT조직의 지속가능경영을 위한 직무전문성 측정요인과 방법)

  • Yoon, Jang Ho;Kim, Kui Won;Lee, Soo Hyun;Kim, Jae Yun
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.10 no.5
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    • pp.27-43
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    • 2015
  • Ever more so than any other times, today's corporations today face an ultimate issue of acquiring highest work expertise for their employees. However, most of current academic researches try to focus on what factors comprise an expertise while they fail to tackle the very issue of detailed numerical measurement of the expertise factors recommended improvement paths, and goals for each measured expertise level. Hence, this study suggests more objective and highly reliable identification of work competence measurement factors and the correlation among the identified factors. For details, it tries to propose a methodology of expertise measurement by developing into the definition of experts and expertise, reestablishment of expertise factors, determination of reference points of the expertise factors, and weighting of the factors. This measurement methodology finds that it itself has significant correlation with existing work competency level measurement and test tools. Therefore it is identified to justify its effectiveness. Finally, this study proposes an action point of establishing a national expertise architecture and its frameworks for various societies in general.

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A study on multi degrees of freedom fine motion measurement for milli-structure (밀리구조물의 다자유도 미세 변위 측정법에 대한 연구)

  • 배의원;김종안;김수현;곽윤근
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2000.11a
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    • pp.39-42
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    • 2000
  • Cutrent technological development toward miniaturization requires smaller components. These components usually generate complex multi-DOF motions other than simple 1-DOF motlon. Therefore it is essential to develop measurement methodology for 6-DOF motions. In this paper, a new 6-DOF measurement system for milli-struchlre is presented. This methodology basically employs the Optical Beam Deflection Method (OBDM) with a diffraction grating. A laser beam is emitted toward the difliaction grating which could be attached on the surface of a milli-structue and the incident ray is dif'||'&'||'acted in several directions. Among these difliacted beams, $0^{th}$ and $\pm$ $1^{th}4" order difkicted rays are detected by 4 Quadrant Photodiodes. From coordinate values fram each detector, we can get information for 6-DOF motions with lineariration method, Required resolutions for milli-struchue measurement are suh-micrometer in translation and arcsec in rotation. Experimental results indicate that proposed system has possibility to satisfy this requirement.

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A Study on the Methodology for Determining Dynamic Loadings of Automotive Suspension System Using Measurement and Modeling

  • 김호용;이재곤;박용국
    • Transactions of the Korean Society of Automotive Engineers
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    • v.7 no.8
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    • pp.262-271
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    • 1999
  • To design suspension system and estimate its durability , the loading history of each suspension part exposed to various operation conditions should be known from either measurement or computations. Based on these results, stress analysis is carried out to obtain the optimal shape and to reduce the production cost through the proper selection of manufacturing process. In this paper, first the measurement of 3-directional accelerations of wheel center using an accelerometer are undertaken from a vehicle running on Belgian road. Then the data measured from experiments are pre-processed with filtering . Based on the pre-processed data the methodology for determining the dynamic loading to each suspension part is developed by simply modeling the suspension system with ADAMS software. Eventually , it is expected that dynamic loadings can be used for the dynamic stress and fatigue analyses.

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A Study on the Standardization In the Mandibular First Premolar of the Middle Aged Korean (하악 제1소구치의 표준화 연구)

  • Lee H.J.;Chun K.J.;Chung D.T.;Cho C.H.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.10a
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    • pp.252-255
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    • 2005
  • Mandibular first premolars obtained from the middle-aged men about the ages of 50 were scanned using a Micro-CT. A Jig was made for a Micro-CT measurement to get reliable data from irregular teeth shape. Data were measured from the scanned 2-D images by way of measurement software. the methodology fer measurement of the mandibular first premolar was presented and according to this, the standardized mandibular first premolars of middle aged Korean males and females were made by using a rapid prototyping system.

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A Study on A Spacecraft Alignment Measurement System (위성체 얼라인먼트 측정 시스템에 관한 연구)

  • Park, Hong-Chul;Son, Young-Seon;Choi, Jong-Yeon;Yoon, Yong-Sik
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.32 no.7
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    • pp.98-104
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    • 2004
  • A spacecraft alignment measurement requires highly precise measurement accuracy which is less than ${\pm}0.5^{\circ}$. In general, such an alignment measurement has been performed by using three or more theodolites. However, it contains the latent accuracy error because of a position stability of spacecraft, etc. The new alignment measurement system which consists of a theodoilte, a rotating table and a digital inclinometer has been developed to possibly to possibly reduce the error. This paper describes the concept and methodology of methodology of measurement system. It was found that new measurement system can provide more accurate results than the conventional system.

Projection-based Performance Measurement Methodology of Session Initiation Protocol for the Next Generation Convergence Network (차세대 네트워크를 위한 프로젝션 기법 기반 SIP 성능 측정 방법론)

  • Lee, Kyou-Ho;Sung, Kil-Young
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.13 no.12
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    • pp.2533-2540
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    • 2009
  • Performance of processing protocols is one most important goal in a network or systems constituting the network. Measurement of performance, thus, is an essential element to not only establish the network but also develop systems. A projection in vector mathematics is the transformation of points and lines in one plane onto another plane by connecting corresponding points on the two planes with parallel lines. This is a method, as an application of vector mathematics, which is widely used in engineering as well to consider elements dedicated to the measurement object. This paper proposes a sound methodology for measuring the performance of the SIP protocol, which is based on the projection. The SIP protocol is a typical standard protocol for call-processing in the internet telephony of Next Generation Convergence Network. Owing to use the projected protocol which excludes unnecessary operation paths, the methodology can be effective in implementation and resource utilization. This paper also presents a process based on the proposed methodology to measure the performance of a SIP proxy server.

A Case Study on Economic Effect of KPI for TPM Performance Measurement (사례를 통한 TPM 성과측정 KPI의 경제적 효과 산출 방법)

  • Oh, Sangyoung;Son, Yangkyun;Suh, Yongsung;Jeong, Seonphil
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.11
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    • pp.5044-5051
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    • 2012
  • TPM(Total Productive Maintenance) is a methodology to improve corporations' productivity and has been employed widely. At the initial stage of the TPM, we need to set basic plans and goals of the TPM. Also, quantization of performance is required through the TPM activity measurement indices to achieve the plans and the goals. We analyzed measurement factors of TPM activity by observation of previous researches and suggest a measure methodology of economic effect for the TPM performance measurement based on BSC and quantification of qualitative measurement.

A Study of Security QoS(Quality of Service) Measurement Methodology for Network Security Efficiency (MOS(Mean Opinion Score)를 이용한 네트워크 보안 QoS(Quality of Service) 평가체계)

  • Kim, Jeom Goo;Noh, SiChoon
    • Convergence Security Journal
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    • v.12 no.6
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    • pp.11-17
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    • 2012
  • Network security performance evaluation is a complex and diverse system environments, a single, specific performance measurements alone performance evaluation measure itself and the meaning of the reliability of the evaluation results do not limit the number of days only. In this paper, we propose a method to measure the security features of security, QoS measurement techniques using MOS satisfaction. MOS(Mean Opinion Score) Rating specifications for network security, QoS satisfaction and how to operate the development and operational model for future customer's satisfaction for information systems that can be used to evaluate the QoS measurement/analysis be utilized in the field. Objectified in the form of standards and performance measurement system provider (supplier development) and consumers(users) all the results available so that how to develop a system. Development is the development of information security features, the performance of these two features networking capabilities and a comprehensive evaluation of a three-gaeyoungyeok Correlating performance measurement methodology. Systematic measurement environment designed using the proposed methodology of this study, when the operating system is on the satisfaction of the security, QoS can be calculated. Forward In addition, a variety of performance metrics and performance measurement methods by extending the network security system satisfaction rating upgrade by the way will be.