Antennas more complex than the dipole or vertical designs are usually intended to increase the directivity and consequently the gain of the antenna. This can be accomplished in many different ways leading to a plethora of antenna designs. The vast majority of designs are fed with a balanced line (unlike a monopole antenna) and are based on the dipole antenna with additional components (or elements) which increase its directionality. Antenna "gain" in this instance describes the concentration of radiated power into a particular solid angle of space, as opposed to the spherically uniform radiation of the ideal radiator. The increased power in the desired direction is at the expense of that in the undesired directions. Power is conserved, and there is no net power increase over that delivered from the power source (the transmitter.)
Gain when referring to an antenna refers to what about radiated power?
concentration

The compression works by reducing the accuracy of certain parts of a sound that are considered to be beyond the auditory resolution ability of most people. This method is commonly referred to as perceptual coding. It uses psychoacoustic models to discard or reduce precision of components less audible to human hearing, and then records the remaining information in an efficient manner.
These models ensure that the precision is reduced for the components that are what to human hearing?
less audible

In Dutch, the diminutive is not merely restricted to nouns and exist in numerals (met z'n tweetjes, "the two of us"), pronouns (onderonsje, "tête-à-tête"), verbal particles (moetje, "shotgun marriage"), and even prepositions (toetje, "dessert"). Most notable however, are the diminutive forms of adjectives and adverbs. The former take an diminutive ending and thus functions as a noun, the latter remain adverbs and have always the diminutive with the -s appended, e.g. adjective: groen ("green") → noun: groentje ("rookie"); adverb: even ("just") → adverb: eventjes ("just a minute").
With the diminutive ending "-tje" added to the Dutch word for "green," what does the new formation translate to in English?
rookie