نتایج جستجو برای: variable sample size and sampling interval vssi control charts

تعداد نتایج: 17113236  

Journal: :Mathematics 2023

Control charts play a beneficial role in the manufacturing process by reduction of non-compatible products and improving final quality. In line with these aims, several adaptive methods which samples can be taken variable sampling rates intervals have been proposed area statistical control (SPC). some SPC applications, it is important to monitor relationship between response independent variabl...

Journal: :The Southwest Respiratory and Critical Care Chronicles 2018

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده ادبیات و علوم انسانی 1392

in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...

2014
Simon Bate Natasha A. Karp

Methods for choosing an appropriate sample size in animal experiments have received much attention in the statistical and biological literature. Due to ethical constraints the number of animals used is always reduced where possible. However, as the number of animals decreases so the risk of obtaining inconclusive results increases. By using a more efficient experimental design we can, for a giv...

Journal: :Journal of food protection 2015
Andreas Kiermeier John Sumner Ian Jenson

Australia exports about 150,000 to 200,000 tons of manufacturing beef to the United States annually. Each lot is tested for Escherichia coli O157 using the N-60 sampling protocol, where 60 small pieces of surface meat from each lot of production are tested. A risk assessment of E. coli O157 illness from the consumption of hamburgers made from Australian manufacturing meat formed the basis to ev...

2008
Kieran Kelly

Abstract The Law of Large Numbers tells us that as the sample size (N) is increased, the sample mean converges on the population mean, provided that the latter exists. In this paper, we investigate the opposite effect: keeping the sample size fixed while increasing the number of outcomes (M) available to a discrete random variable. We establish sufficient conditions for the variance of the samp...

2012
YB Bong AA Shariff AM Majid AF Merican

BACKGROUND Reference charts are widely used in healthcare as a screening tool. This study aimed to produce reference growth charts for school children from West Malaysia in comparison with the United States Centers for Disease Control and Prevention (CDC) chart. METHODS A total of 14,360 school children ranging from 7 to 17 years old from six states in West Malaysia were collected. A two-stag...

Journal: :journal of operation and automation in power engineering 2015
elias shokati asl mohammad shadnam zarbil mehran sabahi

the cúk converter, which has voltage buck and boost ability, offers high flexibility as an interface device for solar panels. in addition, current ripple can be more reduced because of two input and output inductors at both sides. this paper presents a new application of current-variable inductors in a cúk converter that reduces the size and capacity of storage elements. because of two inductor...

Journal: :Quality and Reliability Eng. Int. 2008
Charles W. Champ Francisco Aparisi

Two double sampling T 2 charts are discussed. They only differ in how the second sample is used to suggest to the practitioner the state of the process. An optimal method using a genetic algorithm is given for designing these charts based on the average run length of the (ARL). An analytical method is used to determine run length performance of the chart. Comparisons are made with various other...

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