Received: 27 September 2005 Revised: 28 September 2005 Accepted: 29 September 2005 I first met Claudio in Oslo around 1980. Like so many others we met because of Kristen Nygaard. At this time Claudio spent some months at the University of Oslo as a visiting scholar doing research (together with Leslie Schneider) on the practical impacts of the ‘data agreements’ between the Norwegian trade union...

The apparent duration of a visual stimulus has been shown to be influenced by its speed. For low speeds, apparent duration increases linearly with stimulus speed. This effect has been ascribed to the number of changes that occur within a visual interval. Accordingly, a higher number of changes should produce an increase in apparent duration. In order to test this prediction, we asked subjects t...

This is the eighth in a series of papers dealing with the role of vision in reading. In previous papers, we have evaluated the effects of stimulus and subject variables on reading rate using a drifting-text procedure. In this paper, we describe a new test of reading rate that uses static text, called the Minnesota Low-Vision Reading Test (MNread). It is microcomputer-based, and more easily set ...

Neighboring neurons in cat primary visual cortex (V1) have similar preferred orientation, direction, and spatial frequency. How diverse is their degree of tuning for these properties? To address this, we used single-tetrode recordings to simultaneously isolate multiple cells at single recording sites and record their responses to flashed and drifting gratings of multiple orientations, spatial f...

Drifting Overlays are dynamic partial network-layer overlays with traffic ‘safe houses’ that enterprises can use to control, at fine granularity, the reachability and predictability of paths taken to important hosts. Drifting Overlays enable enterprises a level of control over their own DDoS defenses and routing choices, rather than leaving them at the mercy of their ISPs. KeywordsVPNs, Securit...

We combine the results of [5] and [3] and derive a continuous variant of a large class of drifting games. Our analysis furthers the understanding of the relationship between boosting, drifting games and Brownian motion and yields a differential equation that describes the core of the problem.

Drifting seaweeds plays a major role in areas where they are present. We describe a computer model, Jeosim that clarifies the roles of those seaweeds in relation to their transport using particle tracking algorithm. The Euler rule with trapezoidal approximation, used to calculate drifting paths, is implemented in JeoSim in discrete events fashion in order to simulate the path and movement of se...

Context. A large sample of pulsars has been observed to study their subpulse modulation at an observing wavelength (when achievable) of both 21 and 92 cm using the Westerbork Synthesis Radio Telescope. In this paper we present the 92-cm data and a comparison is made with the already published 21-cm results. Aims. The main goals are to determine what fraction of the pulsars have drifting subpuls...