Position Effect - Wiley Online Library

Effect of spectrum measurement position on detection of Klason lignin content of snow pears by a portable NIR spectrometer

A global spectrum model and a partial spectrum model were used to create spectrum compensation models for three local spectrum models, an average spectrum model, and a global spectrum model. The average spectrum model delivered good prediction results in comparison to the local spectrum models and the global spectrum model. The correlation coefficient of calibration and prediction of 0. 842 and 0. 824, respectively, were determined by the average spectrum calibration model developed by VSFAA using the ten common variables selected by the spectral measurement position for LC prediction and produced more promising results. The VSFAA variable selection algorithm, which gave the highest sensitivity to the variability of spectral measurement positions for predicting the LC and provides a robust tool for prediction LC in snow pears. The average spectrum position model combining the nine measurement positions produced positive prediction results and reduced the sensitivity to the measurement location's variation. The effective wavelengths obtained from the equatorial positions alone were helpful in offsetting the effect of the variation of spectral measurement position on the PLSR models based on the spectral measurement range from the equatorial positions alone, with good results, reducing the influence of the variation of the spectral measurement position for LC prediction and increasing the chance of LC prediction's variation.

Source link: https://onlinelibrary.wiley.com/doi/10.1002/fes3.447

Nudging green food: The effects of a hedonic cue, menu position, a warm‐glow cue, and a descriptive norm

Meat intake is also associated with both public health risks and significant CO2 emissions. The nudges promoted vegetarian food purchases by either changing the menu position of vegetarian food or aligning vegetarian food with a hedonic, taste-u2010glow effect, or a descriptive social norm. In two surveys analyzing whether nudges affected customers' willingness to buy vegetarian food, as well as the total number of vegetarian food sold during the intervention, the number of vegetarian food purchased during the intervention was determined. Customers switched to vegetarian food due to the position nudge's result, according to the study, the position nudge had no effect on customers' decision to buy vegetarian food.

Source link: https://onlinelibrary.wiley.com/doi/10.1002/cb.2129

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