We show that the usual dilaton dominance scenario, derived from the tree level Kähler potential, can never correspond to a global minimum of the potential at V = 0. Similarly, under very general assumptions it cannot correspond to a local minimum either, unless a really big conspiracy of different contributions to the superpotential W (S) takes place. These results, plus the fact that the Kähle...

There is an age old debate in curling about whether it is better to be down one point with last shot, or ahead by one point without. The objective of this paper is to apply sensitivity analysis as a methodology to differentiate what appears to be two seemingly equal scenarios. A probability tree is developed for each scenario and a comparison is made based on an expected value basis. Sensitivit...

Stochastic inventory control in multi-echelon systems poses hard problems in optimisation under uncertainty. Stochastic programming can solve small instances optimally, and approximately solve large instances via scenario reduction techniques, but it cannot handle arbitrary nonlinear constraints or other nonstandard features. Simulation optimisation is an alternative approach that has recently ...

Stochastic inventory control in multi-echelon systems poses hard problems in optimisation under uncertainty. Stochastic programming can solve small instances optimally, and approximately solve large instances via scenario reduction techniques, but it cannot handle arbitrary nonlinear constraints or other nonstandard features. Simulation optimisation is an alternative approach that has recently ...

Backtracking and investigating alternative scenarios are a integral parts of exploratory data analysis. Yet today's interfaces cannot represent alternative exploration paths as a branching history, forcing the user to recognize conceptual branch points in a linear history. Further, the interface can only show information from one state at a time, forcing users to rely on memory to compare scena...

In this paper, the author reports findings from research concerning the planning of learning scenarios in education. The purpose of the research is to explore the value of this scenario planning and reflection-on-action. In particular, the research objective is to explore how this innovative method can guide the adoption of ICT in education and cultivate competencies for lifelong and lifewide l...