What are the prevailing PM methodologies employed in the manufacturing sector?

A SYSTEMATIC REVIEW OF THE APPLICATION OF PM METHODOLOGIES IN MANUFACTURING FIRMS WITHIN THE USA(or any other country)

Research questions that will be used are:

1. What are the prevailing PM methodologies employed in the manufacturing sector?

2. How effective or not are these methodologies, Are some more effective than others?

3. What factors influence the PM methodologies employed by Manufacturing firms?

4. Is there a correlation between the PM methodologies employed and productivity?