Structures built from such efficiently packed clusters are more efficiently packed than equal-sized spheres but remain frustrated, since packing around the first shell atoms is still inefficient.

Simple models are presented that describe the rules for almost all the packing that occurs between and among α -helices and pleated sheets. These packing rules, together with the primary and secondary ...

Using this approach, it is possible to assess the structure of natural forests across the world more quickly, and produce more accurate biomass estimates.

Shoshana Anily, Julien Bramel, David Simchi-Levi, Worst-Case Analysis of Heuristics for the Bin Packing Problem with General Cost Structures, Operations Research, Vol. 42, No. 2 (Mar. - Apr., 1994), ...