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Wave propagators for transient waves in periodic media

One-dimensional propagation of transient EM-waves in periodic media is studied. The media are periodic in the direction of propagation and can be of finite or infinite length. Wave propagators, that map a transient field from one point in the medium to another, are introduced. A number of useful relations for the propagators are presented. Some of these relations are used in the determination of e

Separation between pedestrians and bicyclists

In the effort to separate pedestrian and bicycle traffic from motorised traffic the solution often is to let the pedestrians and bicyclists share space. However, combined pedestrian and bicycle paths lead to problems for both pedestrians and bicyclists; for pedestrians it is a security and safety problem and for bicyclists a mobility problem. Seniors and visually impaired pedestrians are especiall

Design and ASIC Performance Analysis of a Reconfigurable Digital Filter for a UMTS Application

A reconfigurable digital root raised cosine (RRC) filter for a UMTS terrestrial radio access (UTRA) mobile terminal receiver is described and analysed. The filter monitors in-band and out-of-band received signal powers and calculates the appropriate filter length that meets the bit-energy to interference ratio (Eb/No). This design is advantageous, as only minimum battery power is used resulting in

Simulation of Experiments for Data Collection – a replicated study

Simulations can be used as a means for extension of data collec-tion from empirical studies. A simulation model is developed, based on the data from experiments, and new data is generated from the simulation model. This paper replicates an initial investigation by Münch and Armbrust, with the purpose of evaluating the generality of their approach. We replicate their study using data from two inspe

Implicit group messaging over peer-to-peer networks

We propose a decoupled distribution paradigm for connecting large numbers of content publishers and consumers called implicit group messaging (IGM). Unlike traditional multicast or publish/subscribe messaging, IGM delivers content to "implicit groups" of consumers matching combinations of attributes specified by the publisher at the time of publication. The contributions of this paper include a ch