This article presents a single CUSUM scheme (called the GCUSUM chart) for simultaneously monitoring the time interval T and magnitude X of an event. For example, a traffic accident may be considered as an event, and the total loss in dollars in each case is the event magnitude. Since the GCUSUM chart is developed based on a synthetic statistic G which is a function of both T and X, this new cha...

Control chart techniques have been widely used in industries to monitor a process in quality improvement. Whenever we deal with variables data, we usually employ a combination of X-bar chart and R chart (or S chart) to monitor both the center and the spread of the process. In this paper, we propose a simple alternative, that is, we design a single chart to monitor both the center and the spread...

The graphic analysis used in RF circuit design has historically benefitted from the invention of the Smith® Chart [1, 2]. Now, with the advent of math packages such as Matlab®, Mathematica®, Mathcad® and others, further enhancements are possible. This article reviews classic design examples. With the capabilities of packages such as Mathcad, a designer can improve productivity and enhance analy...

abstract. in recent years several studies have shown that  control charts with adaptive schemes or double sampling plans detect both small and moderate shifts in the process mean more quickly than the traditional shewhart  chart. in the classical double sampling  chart, the difference between two points were placed in the central region of first stage was not considered. in this study, a new co...

This paper I describes a method for chart parsing Lambek g rammars . The method is of part icular interest in two regards. Firstly, it allows efficient processing of g rammars which use necessity operators, mr extension proposed for handling locality phenomena. Secondly, the method is easily adapted to allow incremental proceasing of Lambek grammars , a possibility tha t has hitherto been unava...

purpose: e is a commonly use letter for illiterates or those who could not read english to measure visual acuity. the e chart is the mainly used charts in iran. however, they do not have the standards. they are in different format, fixed for 6 meter test, with or without lighting, with unequal number of letters in each line and different contrasts. as a result, there is an essential need for a ...

The CCC-r chart is developed based on cumulative count of a conforming (CCC) control chart that considers the cumulative number of items inspected until observing r nonconforming ones. Typically, the samples obtained from the process are analyzed through 100% inspection to exploit the CCC-r chart. However, considering the inspection cost and time would limit its implementation. In this paper, w...

This paper describes a method to enhance the performance of a unification-style bottom-up chart parser by means of top-down filtering techniques. The filter developed consists of a syntactic module which prevents the construction of redundant edges in the chart by ensuring that a proposed edge in the chart can really be syntactically combined with neighboring edges later, and a semantic module ...