Preface.- Contributing Authors.- I Optimal Control.- 1 Skiba Thresholds in Optimal Control of Illicit Drug Use.- 2 A Capital Accumulation Model with Debt Financing: The Steigum Model Revisited.- 3 Turnpikes in multi-discount rate environments and GCC policy evaluation.- 4 An Ethical Behavior Interpretation of Optimal Control.- 5 From Love Dynamics to Relationship Marketing: The Case of Linear Partners.- 6 Existence and characterization of time-consistent monetary policy rules.- II Differential Games.- 7 Dynamic Oligopolistic Competition and Quasi-Competitive Behavior.- 8 Recent Studies on Incentive Design Problems in Game Theory and Management Science.- 9 Computation of Markov Perfect Nash Equilibria without HamiltonJacobi-Bellman Equations.- 10 Foreign Direct Investment and Localized Technological Spillovers.- 11 Impact of Retailer's Myopia on Channel's Strategies.- 12 Common Property Resource and Private Capital Accumulation.- 13 Pricing of Natural Resource under a Randomly Furcating Environment.- Publications of Professor Steffen Jorgensen.