SNAG Calibration Experiment-Buzzards Bay

SUMMARYThe calibrating efficiency of the pre-experimental yield of coconuts was examined using ten years data from a calibration experiment. On the basis of a fully randomized design it was found that the two-year pooled pre-experimental yield on four-tree plots produces consistent calibration and reduces the experimental error mean square by about 73%. This brings down the mean coefficient of variation to 9.7% from its pre-calibration levels of 36 on one-tree plots and 18 on four-tree plots.

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Decision-theoretical formulation of the calibration problem

Journal of Automatic Chemistry ◽

10.1155/s1463924689000143 ◽

1989 ◽

Vol 11 (2) ◽

pp. 70-75

Author(s):

Miroslav Kárný ◽

Katalin M. Hangos

Keyword(s):

Analytical Chemistry ◽

Uncertain Data ◽

Conditional Distributions ◽

Theoretical Formulation ◽

Calibration Experiment ◽

Calibration Problem ◽

Estimation And Filtering ◽

Relationship Of ◽

The Relationship ◽

Abstract Formulation

The choice of calibration policy is of basic importance in analytical chemistry. A prototype of the practical calibration problem is formulated as a mathematical task and a Bayesian solution of the resulting decision problem is presented. The optimum feedback calibration policy can then be found by dynamic programming. The underlying parameter estimation and filtering are solved by updating relevant conditional distributions. In this way: the necessary information is specified (for instance, the need for knowledge of the probability distribution of unknown samples is clearly recognized as the conceptually unavoidable informational source); the relationship of the information gained from a calibration experiment to the ultimate goal of calibration, i.e., to the estimation of unknown samples, is explained; an ideal solution is given which can serve for comparing various ways of calibration; and a consistent and conceptually simple guideline is given for using decision theory when solving problems of analytical chemistry containing uncertain data. The abstract formulation is systematically illustrated by an example taken from gas chromatography.

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The thrust measurement system research for combined nozzle in small space

Transactions of the Institute of Measurement and Control ◽

10.1177/0142331218793485 ◽

2018 ◽

Vol 41 (4) ◽

pp. 1149-1159

Author(s):

Yonghua Lu ◽

Jing Li ◽

Xiang Zhang ◽

Yang Li

Keyword(s):

Measurement System ◽

Force Sensor ◽

Test Method ◽

Small Space ◽

System A ◽

Calibration Experiment ◽

Different Types ◽

Thrust Measurement ◽

Nozzle Thrust ◽

Thrust Forces

For measuring the thrust of combined nozzles in satellite thruster with a small space, the test method that the nozzle directly sprays on the load baffle is employed in this paper. The key problem is how to design the positions of 10 load baffles and how to construct the measurement system. A set of complete and automatic nozzle thrust measurement system is designed and built, and the influence of the load baffle applied on the flow field of nozzles is analyzed using the software FLUENT. Furthermore, the load surface locations of the sensors for the different types of nozzles are analyzed. We draw the conclusion that the load baffle position should range from 4–8 mm for the I-type nozzle and range in 6–12 mm for II-type and III-type nozzle. The correction coefficients of the thrust forces for all channels of the measurement system are determined in the calibration experiment. The uncertainty of measurement system is estimated and the error source of the measurement system is traced. We found that the systematic uncertainty is mainly contributed by the A-type uncertainty which is related with the nozzle dimension and its inner structure. The B-type uncertainty of system is contributed by the force sensor.

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Power calibration experiment for TREAT test M2

10.2172/708176 ◽

1985 ◽

Author(s):

W. R. Robinson

Keyword(s):

Calibration Experiment

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Seafloor multibeam backscatter calibration experiment: comparing 45°-tilted 38-kHz split-beam echosounder and 30-kHz multibeam data

Marine Geophysical Research ◽

10.1007/s11001-017-9340-5 ◽

2017 ◽

Vol 39 (1-2) ◽

pp. 41-53 ◽

Cited By ~ 9

Author(s):

Yoann Ladroit ◽

Geoffroy Lamarche ◽

Arne Pallentin

Keyword(s):

Calibration Experiment ◽

Multibeam Data

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GPS Satellite-to-User Range Accuracies: A Calibration Experiment

Navigation ◽

10.1002/j.2161-4296.1987.tb01502.x ◽

1987 ◽

Vol 34 (3) ◽

pp. 229-249

Author(s):

B. FEESS ◽

J. IROZ ◽

A. SATIN ◽

B. WINN ◽

C. WISEMAN ◽

...

Keyword(s):

Calibration Experiment

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Calibration of echosounder using standard target method

MATEC Web of Conferences ◽

10.1051/matecconf/201928305005 ◽

2019 ◽

Vol 283 ◽

pp. 05005

Author(s):

Liuqing Yang ◽

Yi Chen ◽

Jun Zhang

Keyword(s):

Measurement Uncertainty ◽

Tungsten Carbide ◽

Measurement Data ◽

Calibration Experiment ◽

Working Frequency ◽

Research Institute

In this work, we develop an underwater echosounder and use the standard target method to calibrate the performance of the device. In the calibration experiments, a solid tungsten carbide sphere of 38mm diameter is used as a standard target for calibrating a HPCTB-200-35 echosounder (manufactured by Hangzhou Applied Acoustics Research Institute) with a working frequency of 220 kHz. Further, the measurement data and uncertainty are presented and analyzed; these results demonstrate that the standard target method can calibrate the combined transmitting-receiving response of echosounders effectively. In our calibration experiment, the combined transmitting-receiving response of HPCTB-200-35 is about 33.8 dB, and the measurement uncertainty is about 1.0 dB (k = 2).

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