In order to discuss the formation mechanism of momentum effect,a research has been made from three various angles,which are rational way of traditional finance,behavioral finance and Knight uncertainty theory.

Knightian uncertainty differs from risk in that it describes situations where randomness of an uncertain event faced by a decision maker cannot be adequately described by a probability measure.

Some scholars begin to inquiry into momentum effect under Knightian Uncertainty and it can explain momentum effect of the China stock market reasonably.

Eliminate the uncertain factors to improve the ability of going concern;

The fluency of uncertainty on the currency stabilization;

Research on Volatile and Uncertain Strategic Environment of Langxue Flour Company;

Preliminary Discussion on Indeterminacy in the Environmental Impact Assessment for Highway Network Planning;

Research on indeterminacy of rockfill test result;

International goods trade and indeterminacy in a Ramsey growth model;