This paper deals with qualitative modeling and simulation of continuous-time systems based on Petri nets. Qualitative simulation faces an intrinsic problem of scale. As the number of variables increases, the number of possible qualitative behaviors may grow exponentially in the worst case. We...

This study demonstrates estimations of economic activities on global, national, and subnational levels using remote sensing data, with a focus on developing economies. It extends a recent statistical framework which uses nighttime lights to estimate official income growth by accounting for...

In recent years, following huge changes in the international politics of East Asia, Laos's geopolitical position has once again been spotlighted, with some even speaking of their expectations that the country's position will rise from being an inland country to being a bridge country. However,...