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Moody's was founded by John Moody in 1909 to produce manuals of statistics related to stocks and bonds and bond ratings. Moody's was acquired by Dun & Bradstreet in 1962. In 2000, Dun & Bradstreet spun off Moody's Corporation as a separate company that was listed on the NYSE under MCO.
The threshold of hearing is generally reported in reference to the RMS sound pressure of 20 micropascals, i.e. 0 dB SPL, corresponding to a sound intensity of 0.98 pW/m 2 at 1 atmosphere and 25 °C. [3] It is approximately the quietest sound a young human with undamaged hearing can detect at 1 kHz. [4]
McDaniel joined Moody's Investors Service in New York in 1987 as an analyst in Asset Securitization. [4] [6] In 2001 he became president of Moody's Investors Service, and was elected to the Moody's Corporation board of directors in 2003. McDaniel became chief operating officer of Moody's Corporation in January 2004.
source: Final Report of the National Commission on the Causes of the Financial and Economic Crisis in the United States, p.229, figure 11.4 Credit rating agencies came under scrutiny following the mortgage crisis for giving investment-grade, "money safe" ratings to securitized mortgages (in the form of securities known as mortgage-backed securities (MBS) and collateralized debt obligations ...
Moody's, previously known as Moody's Analytics, is a subsidiary of Moody's Corporation established in 2007 to focus on non-rating activities, separate from Moody's Investors Service. It provides economic research regarding risk, performance and financial modeling , as well as consulting, training and software services.
A square of this difference (i.e., a square of the deviation from the equilibrium pressure) is usually averaged over time and/or space, and a square root of this average provides a root mean square (RMS) value. For example, 1 Pa RMS sound pressure (94 dBSPL) in atmospheric air implies that the actual pressure in the sound wave oscillates ...
While describing sound in terms of sound pressure, a logarithmic conversion is usually applied and the sound pressure level is stated instead, in decibels (dB), with 0 dB SPL equal to 20 micropascals. A microphone is distinguishable by the voltage value produced when a known, constant root mean square sound pressure is applied. This is known as ...