Abstract. Summary: Chromaligner is a tool for chromatogram alignment to align retention time for chromatographic methods coupled to spectrophotometers such as h

DNA fluorescence in situ hybridization (DNA FISH) has emerged as a powerful microscopy technique that allows a unique view into the composition and arrangement of the genetic material in its natural context—be it the cell nucleus in interphase, or chromosomes...

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Two different algorithms for time‐alignment as a preprocessing step in linear factor models are studied. Correlation optimized warping and dynamic time warping are both presented in the literature as methods that can eliminate shift‐related artifacts from measurements by correcting a sample vector towards a reference. In this study both the theoretical properties and the practical implications of using signal warping as preprocessing for chromatographic data are investigated. The connection between the two algorithms is also discussed. The findings are illustrated by means of a case study of principal component analysis on a real data set, including manifest retention time artifacts, of extracts from coffee samples stored under different packaging conditions for varying storage times. We concluded that for the data presented here dynamic time warping with rigid slope constraints and correlation optimized warping are superior to unconstrained dynamic time warping; both considerably simplify interpretation of the factor model results. Unconstrained dynamic time warping was found to be too flexible for this chromatographic data set, resulting in an overcompensation of the observed shifts and suggesting the unsuitability of this preprocessing method for this type of signals. Copyright © 2004 John Wiley & Sons, Ltd.

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Correlation optimized warping has been the most used technique to correct the drifts in peak positions. COW aligns the unaligned chromatogram to the reference chromatogram provided slack (t) and segment lengths (m) are optimized. However, several combinations of m and t need to be tested before finding the o

Rep. Lucille Roybal-Allard (D-Calif.) will likely be the chairwoman of the powerful House Appropriations Committee's Homeland Security S...

https://steamcommunity.com/games/42850/announcements/detail/2735325522606729593 The development of 1.12 is now complete. The full patch is attached below. A short changelog of the changes can be...

The Visual Computer - Retrieval and comparative editing/modeling of motion data require temporal alignment. In other words, for such processes to perform accurately, critical features of motion...

Hydrogeology Journal - An economical multilevel groundwater monitoring system has been developed that can be rapidly installed with a direct-push machine, yet is suitable for sampling across large...

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DNA profiling plays a major role in sexual assault cases, but it has a significant shortcoming: Using the current standard DNA profiling method, many jurisdictions require the collection of evidentiary samples within three days of the assault. After that, it may become difficult to obtain a usable DNA profile of the male suspect. What if we could extend the window of time for collecting evidence?

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