The disadvantage of this measure is that it does not intuitively relate to other real world quantities such as the oil price.
The observable quantities are quantities that express states of the "world"; quantities that are unknown at the time of the analysis but will, if the system/activity actually is implemented, take some value in the future and possibly become known.
Though once the province of secret-agent movies and elite military units, infrared vision is a real-world quantity now, and its clearest area of application is the passenger car.
So very often real-world quantities of interest are non-negative sizes, and their measurements yield statistical size distributions.
As noise is omnipresent, real-world quantities measured by scientists and engineers are commonly obtained in the form of statistical distributions.
Generally speaking, PDF of hourly loads provide maximum information on forecasting, yet it may not be practical to obtain the real PDF of real-world quantities and for most of the time, the real PDF are downsampled with sparse empirical results.
Both cybersecurity and physical security for organizations such as those in the utility and the industrial sector can even be enhanced by correlating traditional IT security events with those beyond cyberspace such as sensor devices measuring anomalous real-world quantities like gas leaks, electrical power/voltage/current, temperature, fire alarms, or many other sensors.
For a century and a half the previous pattern of Greek coinage spread widely all over the Greek world, its quantity stimulated by a growing sense of nationalism, its intrinsic quality kept high by commercial competition, and its technique raised to new and often superb levels in an age of self-confidence.
In it he boldly and personally explores "the wealth of the border world, the quantity of unburied stories that refused to die, that wandered about like ghosts from California to Texas waiting for someone to tell them, someone to write them".
Second, and more importantly, voters need to stop living in a world where quantity overshadows quality.
