نتایج جستجو برای: statistical variability

تعداد نتایج: 533019  

2012
Darja Noskievičová

Statistical process control (SPC) is an approach to process control that has been widely used in any industrial or non-industrial fields. SPC is based on so called Shewhart ́s conception of the process variability. This conception distinguishes variability caused by obviously effected common causes (process is considered to be statistically stable) from variability caused by abnormal assignable ...

ژورنال: پژوهش در پزشکی 2012
زالی, علیرضا , عارفیان, نور محمد ,

Abstract Many studies have been conducted on heart rate variability. Variability in the heart signal of two sequential beats is called heart rate variability (HRV). Short- and long- term variability reflects autonomic nervous system function, so that increased or decreased heart rate variability (HRV) is an indicator of human health. So, the analysis of these changes can predict sudden death...

2013
Yen-Wei Chen Mei Uetani Shinya Kohara Tomoko Tateyama Xian-Hua Han Akira Furukawa Shuzo Kanasaki

In computational anatomy, statistical shape model is used for quantitative evaluation of the variations of an organ shape. In this paper, we focus our researches on construction of Statistical Shape Model of the liver and its application to computer aided diagnosis of cirrhosis. We have proved the potential application of statistical shape models in classification of normal and cirrhosis livers...

2004
ROBERT GOULD

Although variability is of fundamental concern and interest to statisticians, often this does not get communicated to students who are taught instead to view variability as a nuisance parameter. A brief survey of a few case studies, as well as a recounting of some history, shows that variability is worthy of study in its own right, and examination of variability leads to insights that might hav...

Journal: :Journal of applied physiology 1998
D Curran-Everett S Taylor K Kafadar

Fundamental concepts in statistics form the cornerstone of scientific inquiry. If we fail to understand fully these fundamental concepts, then the scientific conclusions we reach are more likely to be wrong. This is more than supposition: for 60 years, statisticians have warned that the scientific literature harbors misunderstandings about basic statistical concepts. Original articles published...

2016
Temesgen Gebrehiwot Rafal Paprocki Artem Lenskiy

In this paper we investigated how statistical properties of the blink rate variability changes during two mental tasks: reading a passage and memory testing. To construct time series of inter-blink intervals (blink rate variability) we detected exact blink time in EEG recordings using our blink detection algorithm. We found that among 13 subjects, all subjects blinked less during reading sessio...

Journal: Desert 2011
H Mohammad Asgari M Biniaz M Tahmoures Mohammad Jafari

The main objective in the present study was to assess the spatial variation of chemical and physical soil properties and then use this information to select an appropriate area to install a pasture rehabilitation experiment in the Zereshkin region, Iran. A regular 250 m grid was used for collecting a total of 150 soil samples (from 985 georeferenced soil pits) at 0 to 30, and 30 to 60 cm layers...

ابوطالب بیگی, , جمیله صلواتی, ,

Background: The purpose of this study was to compare electronic fetal heart rate monitoring (EFM) characteristics between Appropriate for Gestational Age (AGA ) and Small for Gestational Age (SGA) fetuses and to determine whether SGA fetuses have specific abnormalities. Materials and Methods: Among children born from Apr 2002 to Mar 2003 in Arash hospital, we identified 300 singleton infants b...

Journal: :Pattern Recognition 2012
Jon Almazán Alicia Fornés Ernest Valveny

In this paper we describe a framework to learn a model of shape variability in a set of patterns. The framework is based on the Active Appearance Model (AAM) and permits to combine shape deformations with appearance variability. We have used two modifications of the Blurred Shape Model (BSM) descriptor as basic shape and appearance features to learn the model. These modifications permit to over...

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