Results 261 to 270 of about 2,451,911 (303)
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2019
Detection limits are highly controversial in practice despite decades of developmental efforts by analytical scientists and regulators. This high resistance to obtaining effective and accepted detection limit solutions indicates our collective failure in how we traditionally approach this problem.
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Detection limits are highly controversial in practice despite decades of developmental efforts by analytical scientists and regulators. This high resistance to obtaining effective and accepted detection limit solutions indicates our collective failure in how we traditionally approach this problem.
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Detection Limits for Nanoscale Biosensors
Nano Letters, 2005We examine through analytical calculations and finite element simulations how the detection efficiency of disk and wire-like biosensors in unmixed fluids varies with size from the micrometer to nanometer scales. Specifically, we determine the total flux of DNA-like analyte molecules on a sensor as a function of time and flow rate for a sensor ...
Paul E, Sheehan, Lloyd J, Whitman
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On the Limitation of Linear MMSE Detection
IEEE Transactions on Information Theory, 2006This correspondence highlights the performance limitation of linear minimum mean-squared error (mmse) detection in underdetermined vector Gaussian channels (as in overloaded code-division multiple-access (CDMA) systems) where the number of symbols (users) exceeds the signal space dimension (spread factor). It is shown that for such a simple receiver it
Mahesh K. Varanasi +2 more
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Shape detection with limited memory
Pattern Recognition, 1991Abstract A new approach to shape detection through the generalized Hough transform is introduced. The method is based on a limited memory implementation of the transform, that reduces its cost and makes it suitable for hardware implementation.
ALBANESI, MARIA GRAZIA, FERRETTI, MARCO
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Detection Limits and Selectivity in Electrochemical Detectors
Analytical Chemistry, 1988Electrochemistry provides a powerful set of tools for analysis. Its power derives from the fact that electrochemistry is inherently chemical in nature. This instrumentation article describes developments in current-carrying electrochemical detectors.
S G, Weber, J T, Long
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Nondetects, Detection Limits, and the Probability of Detection
Journal of the American Statistical Association, 1991Abstract When chemists cannot quantify the concentration in a field sample, they report nondetect instead of a numerical measurement. A data analyst faced with environmental data containing nondetects might assume that all nondetects are zeros, all nondetects are smaller than the smallest detect (numerical measurement), or, if a detection limit is ...
Diane Lambert +2 more
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Residue analytical limit of detectability
1965Determining how small an amount of a given pesticide or drug can be detected in plant or animal tissue has a profound effect on the commercialization of the compound being investigated. This effect lies within the complexities of governmental administration of pesticide and drug regulations, and is not a subject of this discussion.
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The Limits of Detecting Abnormalities with Scanning
Australasian Radiology, 1967SUMMARYA theoretical comparison is made between two different criteria of statistical significance for detecting abnormalities in a scan. Criterion I utilizes as much of the available information content as possible, while Criterion II is applicable to visual reading of a photoscan or colourāscan. The limits of detecting abnormalities with Criterion II
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Handling the limit of detection by extrapolation
Statistics in Medicine, 2012A general method of estimation with a variable observed subject to a limit of detection is introduced. It is based on extrapolation of the estimates obtained by increasing the limit of detection. Theoretical arguments support the method in some special cases, and it is explored by simulations.
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