We briefly review attempts to construct string theories that yield the standard model, concentrating on models with a geometric interpretation. Calabi-Yau compactifications are discussed in the context of both the weakly coupled heterotic string and the strongly coupled version, heterotic M-theory. Similarly, we consider orbifold compactifications of weakly coupled heterotic theory and of Type ...

In our study we use the experimental framework of priming to manipulate our subjects‘ expectations of syllable prominence in sentences with a well-defined syntactic and phonological structure. It shows that it is possible to prime prominence patterns and that priming leads to significant differences in the judgment of syllable prominence.

1 der Name spielt auf die Kombination von Bottom-up-und Top-down-Arbeiten an

Viscusi (1978) shows how, in markets with quality uncertainty, perfect certification results in separation from top down due to an unraveling process similar to Akerlof (1970). De and Nabar (1991) argue that imperfect certification prevents unraveling so that equilibria with full separation do not exist. This note shows that, if one considers the buyers’ buying decision explicitly, a separating...

Organizations have difficulty learning from rare and unusual events because of their inability to interpret these events. Because organizations develop habitual ways of interpreting events—often top down—they can easily miss the novelty of rare and unusual events, which prevents them from experiencing events “richly.” We propose a multilevel, multistaged model of organizational interpretation t...

The spatial division of cities into residential zones is a universal feature of urban life from the earliest cities to the present. I propose a two-level classification of such zones that archaeologists can use to analyze preindustrial cities. Neighborhoods are small areas of intensive face-to-face social interaction, whereas districts are larger areas that serve as administrative units within ...