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(2) Invalid questionnaires were deleted when refining the samples so as to increase the reliability and validity of the information.
The advantage of the three-fold structural learning framework is considering different close degrees between samples so as to improve the performance.
In the data compensation approach, clean data are estimated from their noisy samples so as to make them similar to the training data.
The aim of this work was to develop and validate a sensitive ion-chromatography based analytical procedure for the determination of surrogate powders collected on filter samples so as to meet analytical requirements set out in this ISPE guide.
It was trained by the existing samples of the scheme design and the experts experience, and then tested by the other samples so as to develop the evaluation model.
Although the TUNEL assay and nitrotyrosine stains were titrated carefully in control and fracture samples so as not to give false-negatives or false-positives, these techniques are inherently subject to both positive and negative error.
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In this survey, approximately 8,000 subjects were randomly sampled so as to investigate the attitudes toward ART, and the collection rate was more than 60%.
Physicians from both private and public hospitals were selected using purposeful sampling, so as to cover the range of physicians (interns, GPs/medical officers, residents and specialists), size and location of practices and sex of physicians as far as possible.
As a result, CLEANEX-PM experiments (44, 45) could be carried out on the H exchange-in sample so as to provide a precise calibration of the relative pH values between the two sets of measurements.
In order to maintain representativeness at the population level, additional individuals from communities involved in the previous survey (GNHIES98) and from additional communities were sampled so as to replace the number of participants expected to decline participation in DEGS1 or to be lost to follow-up.
In this paper, methods of deducing the minimum value and the Cauchy Schwarz inequality were applied to deduce the formulae for the optimum sample sizes for two-stage, two-stage cluster and three-stage sampling, so as to minimize the cost for specified values of the sampling errors and to minimize the sampling errors for specified cost.
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