Stanley Plog’s psychographics model was introduced in 1967 and has been widely accepted by various researchers and marketing companies. Plog’s main point was that travelers’ personality characteristics, or psychographics, are determinants of their travel patterns and preferences. The main objective of this study was to verify whether or not Plog’s model is flawed by defining travelers in terms ...

In a setting with repeated experiments, where evidence about the experiments is symmetric, a decision-maker ranks bets (or acts) over their outcomes. We describe a stark modeling trade-o¤ between symmetry of preference (indi¤erence to permutations), dynamic consistency and ambiguity. Then, assuming that experiments are ordered in time, we outline an axiomatic model of preference that exhibits d...

We report the experimental demonstration of a photorefractive dynamic holographic memory that has a simple feedback architecture stabilized through a novel spatial sampling technique. By using dynamic copying to compensate for photorefractive decay, this memory provides nondestructive readout, selective erasure and rewriting, and real-time adaptation of holograms through an arbitrarily large nu...