Planetary boundary layer (PBL) Planetary boundary layer (PBL), also called atmospheric boundary layer, the region of the lower troposphere where Earthâs surface strongly influences temperature, moisture, and wind through the turbulent transfer of air mass.
Portfolio optimization tools are useful to assist planners, advisers, and clients in ways to conceptualize the asset allocation problem. But, they should not be relied upon as the primary tool for structuring an investment portfolio.
Project portfolio management. Project Portfolio Management (PPM) is the centralized management of the processes, methods, and technologies used by project managers and project management offices (PMOs) to analyze and collectively manage current or proposed projects based on numerous key characteristics.