Support for a two-dimensional model of conflict behavior.

Some descriptions show what a black hole might look like in a two-dimensional model of a three-dimensional universe.

A two-dimensional model might be used to simulate the drag forces on the cross-section of an aeroplane wing.

A structural and functional analysis of a two-dimensional model of social isolation.

This allowed the phase transition point in the two-dimensional model to be determined exactly (under the assumption that there is a unique critical point).

Unlike previous studies on the subject, she used the above-mentioned two-dimensional model for sexual orientation.

Figure 4 represents a two-dimensional model such as is afforded by two parallel rows of pennies lying on a table.

This two-dimensional model consists of vectors that point in two directions, representing a "boomerang" shape.

The distortion (on a two-dimensional model, and for small focus angles) is best approximated by:

For two-dimensional models, the lattice is taken to be the square lattice.