نتایج جستجو برای: ewma techniques

تعداد نتایج: 628987  

ژورنال: :روش های عددی در مهندسی (استقلال) 0
رضا برادران کاظم زاده r.b.kazemzadeh رسول نورالسناء و مهدی کرباسیان r.noorossana and m. karbasian

آگاهی از هزینه های کیفیت به کارشناسان در طراحی بهینه کنترل کننده های run-to-run(r2r) به منظور بهبود کیفیت فرایندهای تولیدی کمک موثری می کند. این آگاهی در جهت کاهش تعداد اشتباهات و خطاها در مورد هزینه های مربوط به این نوع کنترل کننده ها مورد استفاده قرار می گیرد. در این مقاله بر اساس مدل فرایندی هزینه های کیفیت، هزینه های تطابق و عدم تطابق برای فرایندی که کنترل کننده های r2r را استفاده می کند، م...

Journal: :Quality and Reliability Eng. Int. 2013
Nasir Abbas Muhammad Riaz Ronald J. M. M. Does

Control charts are themost extensively used technique to detect the presence of special cause variations in processes. They can be classified intomemory andmemoryless control charts. Cumulative sum and exponentially weightedmoving average control charts are memory-type control charts as their control structures are developed in such a way that the past information is not ignored as it is done i...

Journal: :Journal of wound care 2014
Patricia Price Finn Gottrup Martin Abel

In 2010, the EWMA Patient Outcome Group (POG) published recommendations to improve the quality of evidence in wound management. (1) As a companion piece of work, the EWMA POG has worked to provide a series of user-friendly documents to assist those new to (or inexperienced in) research, in starting on the path to plan, conduct, interpret and disseminate findings from an investigation that will ...

2017
R. Baradaran Kazemzadeh M. Karbasian M. A. Babakhani Reza Baradaran Kazemzadeh Mahdi Karbasian Mohammad Ali Babakhani

The performance of an X-bar chart is usually studied under the assumption that the process standard deviation is well estimated and does not change. This is, of course, not always the case in practice and X-bar charts are not robust against errors in estimating the process standard deviation or changing standard deviation. In this paper, the use of an exponentially weighted moving average (EWMA...

Journal: :Revue scientifique et technique 2005
N Goris K De Clercq

Diagnostic laboratories are increasingly required to meet stringent quality standards, and validated assays are needed to achieve formal accreditation. Validation of test methods is often considered to be finalised when the assay parameters and characteristics have been established. However, like any process, diagnostic assays are subject to random variation resulting in shifts in the mean test...

2011
MI Xue ZHAO Hai ZHU Jian

The environments of WSN frequently disturb the link quality. Link quality not only affects the reliability of data transmission in the network, but also determines the performance of related Upper-layer network protocol. Therefore, link quality evaluation becomes a considering question. The link quality evaluation methods include data package delivery rate and LQI(Link Quality Index). Practical...

2004
Jouni Viinikka Hervé Debar

Intrusion detection systems typically create large amounts of alerts, processing of which is a time consuming task for the user. This paper describes an application of exponentially weighted moving average (EWMA) control charts used to help the operator in alert processing. Depending on his objectives, some alerts are individually insignificant, but when aggregated they can provide important in...

Journal: :Journal of Mathematics 2022

Quick detection of an assignable cause is necessary for process accuracy with respect to the specifications. The aim this study monitor time and magnitude processes based on unit-interval data. To end, maximum exponentially weighted moving average (Max-EWMA) control chart simultaneous monitoring event proposed. be precise, beta unit gamma distributions are considered develop Max-EWMA chart. cha...

Journal: :Journal of Quality Technology 2022

Many extensions and modifications have been made to standard process monitoring methods such as the exponentially weighted moving average (EWMA) chart cumulative sum (CUSUM) chart. In addition, new schemes proposed based on alternative weighting of past data, usually put greater emphasis data less weight current recent data. other cases, output one method, EWMA statistic, is used input another ...

2012
Alfio Lombardo

NetFPGA is a hardware board that it is becoming increasingly popular in various research areas. It is a hardware customizable router and it can be used to study, implement and test new protocols and techniques directly in hardware. It allows researchers to experience a more real experiment environment. In this paper we present a work about the design and development of four new modules built on...

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