Where does scramble collide?

In population ecology, scramble competition is the mode in which a limited resource is split more or less equally among all competitors, so as numbers rise every individual's share falls and, past a point, few or none get enough to survive or reproduce, opposed to contest competition, where some secure a full share and others get nothing. Nicholson's 1954 account of population dynamics named and formalized the scramble–contest distinction. The referent is a density-dependent sharing of resources, measured by how per-capita gain falls with crowding, unrelated to a quarterback's improvised run or a scrambled signal.[1]

Unit

How per-capita share and survival fall as competitor density rises

Recovery means

Not applicable

Measured by

Inferred from density-dependent survival, fecundity, and per-capita resource share

In digital communications, scrambling transforms a transmitted bit stream, typically by combining it with a pseudorandom sequence, so that long runs of identical bits are broken up, aiding clock recovery and spectral shaping, with the original recovered by a matched descrambler at the receiver. Stallings's Data and Computer Communications presents the scrambling techniques used in line coding and modems. The referent is a reversible randomizing transform on a signal, characterized by its generating polynomial and the statistical flattening of the stream, distinct from a gridiron scramble or ecological scramble competition.[2]

Unit

The randomizing transform applied to a bit stream, set by its generating polynomial

Recovery means

The original stream is recovered exactly by the matched descrambler at the receiver

Measured by

Assessed by run-length statistics, spectral flatness, and error-recovery behavior