نتایج جستجو برای: standard deviation of rank
تعداد نتایج: 21186069 فیلتر نتایج به سال:
Data analysis in MRI usually entails a series of processing procedures. One of these procedures is noise assessment, which in the context of this work, includes both the identification of noise-only pixels and the estimation of noise variance (standard deviation). Although noise assessment is critical to many MRI processing techniques, the identification of noise-only pixels has received less a...
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
In this paper we study the structure of standard Einstein solvmanifolds of arbitrary rank. Also the validity of a variational method for finding standard Einstein solvmanifolds is proved.
this study was an attempt to investigate the effect of using c-test passages on the reading comprehension and incidental vocabulary learning of iranian intermediate efl learners. the participants were 60 male efl learners at kish mehr institute in garmsar. in fact, there were two groups, an experimental group and a comparison group with 30 students in each. the participants were pretested throu...
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 (EW...
Thepaper describes the rank 1weighted factorization solution to the structure frommotionproblem. Thismethod recovers the 3Dstructure from the factorization of a datamatrix that is rank 1 rather than rank 3. Thismatrix collects the estimates of the 2Dmotions of a set of feature points of the rigid object. These estimates are weighted by the inverse of the estimates error standard deviation so th...
Measures of variation are statistical measures which assist in describing the distribution data set. These either used separately or together to give a wide variety ways measuring variability data. Researchers and mathematicians found out that these were not perfect, they violated algebraic laws possessed some weakness could ignore. As result facts, new measure known as geometric was formulated...
background: there is a known inverse association between solar radiation and the prevalence of multiple sclerosis (ms). some studies have investigated the link between vitamin d and ms. the aim of this study was to investigate the possible association between serum 25(oh) vitamin d3 concentration and the severity of disease in iranian patients with ms. methods: patients with relapsing-remitting...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید