Wave field synthesis (WFS) is a technique allowing the reproduction of sound fields in an extended listening area. This paper describes the theoretical fundamentals of WFS using linear loudspeaker arrays. A spatiotemporal frequency domain analysis of the reproduced wave field reveals that not only the desired wave field is present in the listening area but also an additional near-field componen...

Prior studies indicate that perceived risk is an important determinant of the adoption of commerce-related IT innovations. However, little work has investigated how risk perceptions are formulated in consideration of different demographic attributes. Based on a sample of 377 useful responses, this study quantifies how different risk dimensions (privacy risk, performance risk, psychological risk...

This paper presents a printed near field communication system that can be integrated into everyday objects, like paper products or plastic parts. The interface is realised by high-volume production technologies, like printing and injection moulding, as they allow for the integration of “low-end” electronics at low costs and, thus, potentially enable a wide spreading of the technology. As a firs...

Traditionally, there are two methods to implement anonymous channels: free-route networks like onion routing and cascade networks like mix network. Each of them has its merits and is suitable for some certain applications of anonymous communication. Both of them have their own drawbacks, so neither of them can satisfy some applications. A third solution to anonymous channels, Klein bottle routi...

In this work, the physical and mechanical properties of bleached Eucalyptus pulp reinforced with nanofibrillated cellulose (NFC) are compared with those of traditional beaten pulp used in the making of writing/printing and offset printing papers. For this purpose, three different types of hardwood slurries were prepared: beaten pulps, unbeaten pulps reinforced with NFC, and slightly beaten pulp...

A novel summation variation on the usual computation bymultiple reflections of the transient rqsponse for a realistically modeledpulse generator loaded with different kinds of loads is described. Thisconstitutes an alternative method for evaluation of the inverse Laplacetransform applicable for general lumped loads. As examples, we employthis approach to calculate the transi...