As for the rest, studies show a wide spectrum running from family firms, many of them poorly managed, to well-run high-performers, some of them kept to the mark by private-equity funds.

At the other end of the spectrum is an extra-large instance with four cores running at 2 GHz each, 15 GB of memory, and 1.6 TB of disk space.

In order to control the noise of the indoor unit of an embedded air conditioner, the main source of the noise is identified by using separate running and noise spectrum analysis.