Armin Linke: The Appearance of That Which Cannot Be Seen

Visualization Techniques for Surveillance: Visualizing What Cannot Be Seen and Hiding What Should Not Be Seen

Introduction Video surveillance (closed-circuit television, CCTV) systems are becoming ubiquitous; you can hardly take a walk in a modern city center without being recorded by surveillance cameras, even less so inside shops and malls. A large shopping mall can have hundreds of cameras installed, a football stadium maybe one hundred. Typically, these cameras are connected to a control center, wh...

Manuals for the Elderly: Which Information Cannot Be Missed?'

Elderly people seem to encounter more problems than people from other age groups do, when using consumer-electronics products and their accompanying manuals. This may be due to the absence of some kinds of information. In this study effects of the absence of different information types in instructions on action performance were explored for different age groups. Younger (aged 20-30 y.) and elde...

Aspherical manifolds that cannot be triangulated

Although Kirby and Siebenmann [13] showed that there are manifolds which do not admit PL structures, the possibility remained that all manifolds could be triangulated. In the late seventies Galewski and Stern [10] constructed a closed 5–manifold M 5 so that every n–manifold, with n 5, can be triangulated if and only if M 5 can be triangulated. Moreover, M 5 admits a triangulation if and only if...

Needle Variations that Cannot be Summed

A Category Test that Cannot be Manipulated∗

In Dekel and Feinberg (2004) we suggested a test for discovering whether a potential expert is informed of the distribution of a stochastic process. This category test requires predicting a “small”– category I – set of outcomes. In this paper we show that under the continuum hypothesis there is a category test that cannot be manipulated, i.e. such that no matter how the potential expert randomi...