Physarum polycephalum inspired algorithm (PPA) has attracted immense attention recently. By modeling real-world problems into a graph and adopting proper adaption equation, PPA could solve system optimization or user equilibrium problems. However, few PPA-based algorithms can tackle with capacity constraints, lacking the ability to control link flows in PPA. To this problem, novel framework, ca...

A low complexity dynamic subcarrier and power allocation methodology for downlink communication in an OFDM-based multiuser environment is developed. The problem of maximizing overall capacity with constraints on total power consumption, bit error rate and data rate proportionality among users requiring different QOS specifications is formulated. Assuming perfect knowledge of the instantaneo...

This paper studies an optimal investing problem for a retiree facing longevity risk and living standard risk. We formulate the as portfolio choice under time-varying capacity constraint. derive investment strategy specific condition on model parameters in terms of second-order ordinary differential equations. demonstrate endogenous number that measures expected value to sustain spending post-re...