This paper studies the existence of solutions in continuous time optimization problems. It provides a theorem whose …

systems, as well as a simulation method for strategic planning optimization. This method is based on a twostep constructive …

, sometimes referred to as modeling ‘tribes', began to engage in productive dialogue in the mid-1990s (IPCC 2001). From this … methodological conversation have emerged modeling approaches that offer a hybrid of the two perspectives. Yet, while individual … publications over the past decade have described efforts at hybrid modeling, there has not as yet been a systematic assessment of …