Researchers have taken a major step forward in studying time crystals—exotic materials with unusual, ...
Sheng, Z. (2026) Circular Economy in Education: Evidence from UK Second-Hand School Uniform Market. Modern Economy, 17, 199-227. doi: 10.4236/me.2026.171011 .
The McCallum Rule is a monetary policy theory and formula describing the relationship between the monetary base and nominal GDP growth.