A collaboration of research organizations, including National Institute of Standards and Technology, Georgia Institute of Technology NISTT), and Direct Dimensions, has been evaluating advanced methods for measuring a forklift operator's visibility.
The spectral widths along the indirect and the direct dimensions were 22135.197 and 9615.385 Hz, respectively.
Instead of applying FT along the indirect dimension, the 2D correlation information is reconstructed by statistical means through covariance yielding a symmetric spectrum C that has the same high resolution along the indirect and direct dimensions.
In all the spectra, 512* × 2048* complex points in the indirect and direct dimensions were collected for acquisition times of 69.6 and 227 ms. The interscan delay was set to 1.5 s, with four and eight scans per free induction decay, yielding total measuring times of 2 and 4.5 h for the 2D TOCSY and NOESY spectra, respectively.
Analyses of threshold changes therefore partially supported the notion that auditory learning is directed by dimension-specific attention, in that only the group who attended to the dimension of frequency during training showed improvements in FD.
The amplification generates spinning sideband manifolds in the indirect dimension separated by the isotropic shift along the direct dimension.
In particular the results suggest that a numerical method based upon inertial manifold approximation is possible, but for the specific case studied, no advantage could be discerned over more direct dimension-reduction techniques.
Spectral widths were 83 (CHHC) or 44 (NHHC) ppm in the indirect dimension and 310 to 355 ppm in the direct dimension, respectively.
Prior to Fourier transformation, 2D J-RES spectra were multiplied by a combined sine-bell/exponential window function in the direct dimension and by a sine bell function in the incremented dimension [36].
Heteronuclear 2D spectra were processed in a similar fashion to a data matrix size of 2048×512 data points, except that the window function in the direct dimension was a squared sine bell function, shifted by π/2.
