Commentary on Current Trends in Rising Drug Costs and Reimbursement Below Cost.

Purpose: To quantify prescription drug price increases over a span of 3 years (2012-2015), as well as extrapolate current reimbursement rates expected by independent retail pharmacies. In addition, we investigate potential reasons for these increasing drug costs.

Design: Descriptive analysis.

Acoustic properties of plates with unevenly distributed macroperforations backed by woven meshes.

A hybrid model describing the acoustic properties of plates with macroperforations that can be unevenly distributed on the plate surface and backed by woven or precision woven meshes with microscopic perforations is proposed. The plate perforations may be of circular or rectangular shapes. Since the perforated plate may not necessarily be considered as an equivalent fluid, its impedance is calculated by the Maa model [Noise Control Eng.