Back in 1896, the original Dow Jones Industrial Average was an unscientific selection of 12 American companies, weighted by the nominal level of their share prices rather than their market value.
The problem of maximizing total weighted satisfaction level for single machine with fuzzy due-date is a NP-hard problem.
单机模糊交货期总加权满意程度最大化问题是一个NP -难问题。
3
MR diffusion-weighted imaging(DWI) reflects the microscopic Brownian motion of water molecules. It is a new technology for disease research from the cellular and molecular level.