A lot of that tune's improvising -- by Mr. Marsalis, the alto saxophonist Wessell Anderson (with a slightly sharp, Eric Dolphy-intensitysity) and the pianist Eric Lewis -- is textural stuff, the language of trilled and warped notes, clusters and long tones, repetition and abstraction.
We will define a matrix of thresholds,, for all the piano notes clustered in groups.
To this end, we decided to define thresholds for groups of notes clustered according to the mean energy of the samples available in our databases.
Composed in a heated rush on commission from the arts patron Elizabeth Sprague Coolidge, the work opens with the cello strumming and plucking over a sustained, keening note cluster (D-E-F sharp).
Widmann layers up the instruments so that each expanding note cluster feels denser than the one before, and the result is a mesmerising, sonically fascinating piece – even if at 15 minutes it perhaps takes a single idea a notch too far.
Here, the first chord stretching two octaves from D2 to D4 is a diatonic (so-called white-note) cluster, indicated by the natural sign below the staff.
The second is a pentatonic (so-called black-note) cluster, indicated by the flat sign; a sharp sign would be required if the notes showing the limit of the cluster were spelled as sharps.
A separate analysis with acute hospitals alone yielded similar findings (see Additional file 2).> -wrap-foot> Note: cluster robust standard errors in parentheses.
Meanwhile, all variables related to work tension except working extra hours were negative predictors of job satisfaction, with the strongest being harassment from colleagues.> -wrap-foot> Note: cluster robust standard errors in parentheses.
Of note, cluster analysis reported in this study was performed using data on the presence of comorbidities (categorical) and the degree of their presence (linear), but not using data characterizing COPD (e.g., pulmonary function tests) [ 40].
