Results 261 to 270 of about 2,451,911 (303)
Some of the next articles are maybe not open access.

Detecting the Detection Limit

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.
openaire   +1 more source

Detection Limits for Nanoscale Biosensors

Nano Letters, 2005
We 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
openaire   +2 more sources

On the Limitation of Linear MMSE Detection

IEEE Transactions on Information Theory, 2006
This 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
openaire   +1 more source

Shape detection with limited memory

Pattern Recognition, 1991
Abstract 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
openaire   +2 more sources

Detection Limits and Selectivity in Electrochemical Detectors

Analytical Chemistry, 1988
Electrochemistry 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
openaire   +2 more sources

Nondetects, Detection Limits, and the Probability of Detection

Journal of the American Statistical Association, 1991
Abstract 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
openaire   +1 more source

Residue analytical limit of detectability

1965
Determining 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.
openaire   +2 more sources

The Limits of Detecting Abnormalities with Scanning

Australasian Radiology, 1967
SUMMARYA 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 colour‐scan. The limits of detecting abnormalities with Criterion II
openaire   +2 more sources

Handling the limit of detection by extrapolation

Statistics in Medicine, 2012
A 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.
openaire   +2 more sources

The limits of GMO detection

Nature Biotechnology, 2001
S, Kay, G, Van den Eede
openaire   +2 more sources

Home - About - Disclaimer - Privacy