Blogs by Zack can be seen here of selected from the navigation bar:
1/28: Benefits of the Agile Method
2/11: Project Scope Management in Agile/Adaptive Environments
2/18: How Reality Is Used to Change a Projects Schedule
2/25: Different Types of Cost Estimates
3/11: How the Seven Basic Tools of Quality Are Used for Quality Control
3/18: Issues in Resource Acquisition in Resource Assignment, Leveling and Loading