IV-PCA

EM Algorithms for PCA and Sensible PCA

Smart PCA

PCA can be smarter and makes more sensible projections. In this paper, we propose smart PCA, an extension to standard PCA to regularize and incorporate external knowledge into model estimation. Based on the probabilistic interpretation of PCA, the inverse Wishart distribution can be used as the informative conjugate prior for the population covariance, and useful knowledge is carried by the pri...

Circular PCA

Experimental time courses often reveal a nonlinear behaviour. Analysing these nonlinearities is even more challenging when the observed phenomenon is cyclic or oscillatory. This means, in general, that the data describe a circular trajectory which is caused by periodic gene regulation. Nonlinear PCA (NLPCA) is used to approximate this trajectory by a curve referred to as nonlinear component. Wh...

diclofenac suppository vs. iv acetaminophen combined with iv pca for postoperative pain management in patients undergoing laminectomy: a randomized, double-blinded clinical trial

conclusions the use of diclofenac suppository combined with iv pca results in reduced narcotic usage and a higher level of patient satisfaction compared to the use of iv acetaminophen combined with iv pca. results the patients’ characteristics were the same in both study groups. the patients’ satisfaction levels were higher among those who received diclofenac when compared with the acetaminophe...

Circadian variation of IV PCA use in patients after orthognathic surgery - a retrospective comparative study

BACKGROUND An understanding of the features of postoperative pain is essential for optimal analgesic dosing strategies. Using a visual analogue scale (VAS) score and patient controlled analgesia (PCA) infusion pattern analysis, an anesthesiologist can estimate when and how severely patients suffer from pain. Several reports have been published about circadian changes in the pain threshold. Post...