The cumulative sum (CUSUM) control chart is widely used in industry for the detection of small and moderate shifts in process location and dispersion. For efficient monitoring of process variability, we present several CUSUM control charts for monitoring changes in standard deviation of a normal process. The newly developed control charts based on well-structured sampling techniques - extreme r...

To evaluate the developmental status of children and adolescents, a bone-age chart based on the radiograph of hand and wrist has been used in many countries. Bone-age reflects not only the functional status of various hormones but also the influence of chronic disease and it has been used more widely than other indices such as the height-weight-age table. As a standard bone-age chart has not be...

Smith is an instructional, interactive, menu driven program that offers the use of Smith Chart on a personal computer. Using the Smith Chart is greatly simplified by providing the user with a “tracking mode” in which the cursor is tracked, showing the normalized resistance and reactance as well as distances from source and load. Also, construction lines such as radius, diameter and circles can ...

Ablaufsprache (AS, engl.: Sequential Function Chart / SFC) ist eine mächtige, in der Norm EN 61131-3 standardisierte graphische Programmiersprache, die sich als industrieller Standard für die Entwicklung von Ablaufsteuerungen etabliert hat. Dieser Beitrag stellt eine durchgängige Werkzeugkette vor (siehe Abb. 1), die den gesamten Entwicklungsprozess für Ablaufsteuerungen von der systematischen ...

The multi-chart consists of several CUSUM or EWMA charts with different reference values that are used simultaneously to detect anticipated process changes. We not only prove that the chart can quickly achieve the asymptotic optimal bound, but also give an integral equation to determine the reference values to arrive at optimality. Simulation results are used to verify the theoretical optimal p...

This paper describes a technique for obtaining maximumthroughput schedules for iterative data-flow graphs, given a limited set of resources. The method is based on the use of the scheduling-range chart, where the scheduling window of each operation is displayed. This scheduling window, or scheduling range, is relative to a reference operation, and can be finite or infinite. The information in t...

Weather condition is one of the much effective factors in the principle of architecture and urbanization. So in this research long-term trend of effective climate elements in architecture of Darab city including mean of minimum temperature, temperature mean, mean of maximum temperature, minimum relative humidity, maximum relative humidity, relative humidity mean, wind speed and sun hours in mon...

BACKGROUND/AIMS The advantages of logMAR acuity data over the Snellen fraction are well known, and yet existing logMAR charts have not been adopted into routine ophthalmic clinical use. As this may be due in part to the time required for a logMAR measurement, this study was performed to determine whether an abbreviated logMAR chart design could combine the advantages of existing charts with a c...