Mean centering
DETERMINATION OF SIMULTANEOUS SULFAMETHOXAZOLE AND TRIMETHOPRIM BY ULTRAVIOLET SPECTROPHOTOMETRY WITH MEAN CENTERING OF RATIO SPECTRA
... is mean centering of ratio spectra (MCR) method using the calculation of regression equation based on amplitude and calculation of each amount using divisor principle that can be used at simultaneous amount ...
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Resolution of five-component mixture using mean centering ratio and inverse least squares chemometrics
... particular, mean centering of ratio spectra (MCR) is used to remove the contribution of absorb- ing reagent from data matrix precisely and therefore the absorbance of reagent(s) is exactly eliminated ...
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Mean centering of ratio spectra as a new spectrophotometric method for the analysis of binary mixtures of Vanadium and Lead in water samples and alloys
... Alizarin red S (ARS) is used as chromogenic reagents for the determination of a large number of metals. The addition of surfactant-active substances improves the selectivity and sensitivity of the metal determinations. ...
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Extraction and Determination of Three Chlorophenols by Hollow Fiber Liquid Phase Microextraction Spectrophotometric Analysis, and Evaluation Procedures Using Mean Centering of Ratio Spectra Method
... Extraction and Determination of Three Chlorophenols by Hollow Fiber Liquid Phase Microextraction Spectrophotometric Analysis, and Evaluation Procedures Using Mean Centering of Ratio Spec[r] ...
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A novel mean centering method for normalizing microRNA expression from high throughput RT qPCR data
... common mean-centering normalization strategy, herein referred to as mean-centering restricted (MCR) normalization, which is adapted to the TaqMan Megaplex RT- qPCR platform, but is likely ...
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Comparison of Mean Centering of Ratio Spectra Based Spectrophotometric Approach and HPLC Method for Quantitative Determination of Pirenoxine in the Presence of Methylparaben and Propylparaben
... The mean centering of ratio spectra method (MCR) was developed for determination of pirenoxine in the presence of methylparaben and propylparaben. The assay could be performed without prior separation of ...
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Simultaneous determination of some antiprotozoal drugs in different combined dosage forms by mean centering of ratio spectra and multivariate calibration with model updating methods
... the mean centering of ratio spectra spectrophotometric method (MCR) that depends on using the mean centered ratio spectra in two successive steps that eliminates the derivative steps and therefore ...
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MEAN CENTERING OF RATIO SPECTRA METHOD FOR THE ANALYSIS OF THEOPHYLLINE AND EPHEDRINE HCL MIXTURE IN TABLET
... The calibration curve of UV spectrophotometry on the X-axis represents the wavelength and on the Y-axis represents the absorbance of a spectrum. However, on the MCR method, the Y-axis is the amplitude in the form of the ...
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Understanding and misunderstanding Group mean centering: a commentary on Kelley et al.'s dangerous practice
... The ‘Mundlak’ specification (Mundlak 1978, model 3 in Table 1) gives the within effect and the ‘contextual’ effect (the latter being the higher level effect controlling for the raw value of an individual; see Bell et al. ...
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DEVELOPMENT AND VALIDATION OF SPECTROPHOTOMETRIC METHODS FOR SIMULTANEOUS ESTIMATION OF PHENYLEPHRINE HYDROCHLORIDE AND CETIRIZINE HYDROCHLORIDE IN COMBINED DOSAGE FORM
... is mean centering of ratio spectra (MCR) in which absorption spectra of each drug were recorded, divided by suitable divisor and the obtained ratio spectra were mean ...
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Lee04b
... t j directly. Instead, we employ a so-called weighted mean centering scheme to implement this, which consists of two steps. In the first step, center positions t j of Eq. (4) are approximated as a simple ...
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... spectra, mean centering of ratio spectra and successive-ratio derivative spectra methods are developed for the determination of ROSCa, TIM and DICNa simultaneously in ternary mixture in pure laboratory ...
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Journal of Applied Pharmaceutical Science
... The present work describes development and validation of four different stability indicating methods for quantitative analysis of cefdinir (CFD) in bulk powder and pharmaceuticals, and in the presence of its acid and ...
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Generalized Batch Normalization: Towards Accelerating Deep Neural Networks
... Driving our intuition from the beginning was the idea that the non-linearity, deviation measure, and statistic should be chosen in tandem. As mentioned in Section 2, the pairing of ReLU with typical BN (i.e. standard ...
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Evaluating Centering Based Metrics of Coherence
... promising Centering-based metric for text structuring, and to evaluate how useful this metric is for that purpose, using corpus- based methods instead of generally more expen- sive psycholinguistic ...to ...
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Centering: A Parametric Theory and Its Instantiations
... 2.4.1 Utterance and Previous Utterance. In the early centering papers, utterances were implicitly identified with sentences. Kameyama (1998), however, argued that such identification makes the number of potential ...
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A Reformulation of Rule 2 of Centering Theory
... Two possible notions of local coherence are 1 overall coherence of a multi-utterance discourse segment as in the original GJW model, which stipulates preferences for coherent sequences o[r] ...
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Centering Similarity Measures to Reduce Hubs
... of centering, the transforma- tion that shifts the origin of the space to the data centroid, provides an effective way to re- duce ...weighted centering. Our experimental results show that (weighted) ...
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Never Look Back: An Alternative to Centering
... Never Look Back An Alternative to Centering Never Look Back An Alternative to Centering M i c h a e l Strube I R C S Institute for R e s e a r c h in C o g n i t i v e S c i e n c e U n i v e r s i t[.] ...
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Centering theory and the Italian pronominal system
... Centering theory and the Italian pronominal system Centering theory and the Italian pronominal system B a r b a r a Di E u g e n i o * D e p a r t m e n t o f C o m p u t e r a n d I n f o r m a t i o[.] ...
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