BACKGROUND Drug overdose is a public health crisis in the United States, due in part to the unintended consequences of increases in prescribing of opioid analgesics. Many clinicians evaluate risk markers for opioid-related harms when prescribing opioids for chronic pain; however, more data on predictive risk markers are needed. Risk markers are attributes (modifiable and non-modifiable) that ar...

Waveform relaxation is a numerical method for solving large-scale systems of ordinary differential equations on parallel computers. It differs from standard iterative methods in that it computes the solution on many time levels or along a continuous time interval simultaneously. This paper deals with the acceleration of the standard waveform relaxation method by successive overrelaxation (SOR) ...

Recombination of a surface-radical with a surface-olefin (SR-SOR) to form a six-membered ring is a critical step in the current mechanism for chemical vapor deposition growth of the diamond (100) surface. We estimate the rate constant for SR-SOR by combining quantum chemistry calculations, molecular mechanics calculations, and transition state theory. The ab initio calculations include extensiv...

OBJECTIVE We explored the relationships between sensory modulation and health-related quality of life (HRQOL), social supports, and mental health symptoms of anxiety and depression. METHOD Twenty-eight adult volunteers ages 18-60 participated in the study. Fourteen adults were sensory overresponsive (SOR), and 14 adults in a matched comparative group were not sensory overresponsive (NSOR). Al...

The successive overrelaxation (SOR) and the symmetric SOR (SSOR) iteration matrices are connected with the Jacobi iteration matrix in case these operators are associated with a (9, p 9)-generalized consistently ordered matrix through certain matrix identities. The validity of these identities has been proved in the last couple of years. Very recently an analogous matrix identity was shown to ho...

A new relaxation analysis and two acceleration schemes are proposed for the ve-point Red-Black Gauss-Seidel smoothing in multigrid for solving two dimensional Poisson equation. For a multigrid V cycle, we discovered that under-relaxation is applicable to restriction half cycle and overrelaxation is applicable to interpolation half cycle. Numerical experiments using modi ed multigrid V cycle alg...

Ahstract In this paper it is assumed that the point (or block) Jacobi manix. B associated with the matrix A is weakly 2-cyclic consistently ordered with complex, in general, eigen-value spectrum, a(B), lying in the interior of the infinite unit strip. It is then our objec~ live to apply and ex.tend the Young-Eidson algorithm in order to determine the real optimum relaxation factor in the follow...

Evidence-Based Answer Compared with usual care, case management does not reduce mortality in patients with multiple chronic diseases. (Strength of recommendation [SOR]: A, based on consistent, good-quality patient-oriented evidence.) Case management improves patient satisfaction with care for congestive heart failure and cancer, and increases patient perception of care coordination. It improves...