We transfer the basic idea of bonds, introduced by Hegedüs, Schicho and Schröcker for overconstrained closed chains with rotational joints, to the theory of self-motions of parallel manipulators of Stewart Gough type. Moreover we present some basic facts and results on bonds and demonstrate the potential of this theory on the basis of several examples. As a by-product we give a geometric charac...

This paper presents results from an experiment on the effects of retail-price recommendations (RPRs) on consumer and retailer behavior. Despite their non-binding nature, RPRs may influence consumers’ willingness to pay by setting a reference point. Loss averse consumers will then be reluctant to pay a price higher than the recommended one. Furthermore, at a given price level consumers will dema...

The p-Cycle concept is an efficient way to protect the network traffic against failures of network elements. We present the methods and issues related to network planning, management and operations of p-Cycles and highlight the advantages using this concept. Furthermore we report efficiency results of a case-study of the deployment of p-Cycles in Wavelength Divison Multiplex (WDM) networks.

The two main alternatives for achieving high QoS on the public internet are (i) admission control and (ii) capacity overprovisioning. In the study of these alternatives the implicit (and sometimes explicit) message is that ideally, QoS issues should be dealt with by means of sophisticated admission control (AC) algorithms, and only because of their complexity providers fall on the simpler, perh...

Network admission control (NAC) limits the traffic in a network to avoid overload and to assure thereby the quality of service (QoS) for admitted flows. Overload may occur due to exceptional traffic demand, but it is mostly caused by redirected traffic due to link failures. Conventional NAC methods cannot cope with network outages and fail when they are needed most. This paper categorizes exist...

Resilient modulus of pavement materials is a key property required for the pavement thickness design. This paper describes the results of an experimental study on the effects of temperature and loading frequency on the resilient modulus of a SBS polymer modified asphalt concrete under dry and saturated conditions. Dynamic creep tests were conducted on dry and saturated specimens of the mixture ...

The effectiveness of frequency hopping for antijamming protection of wireless channels is analyzed from an information-theoretic perspective. The sender can input its symbols into one of several frequency subbands at a time. Each subband channel is modeled as an additive noise channel. No common randomness between sender and receiver is assumed. It is shown that capacity is positive, and then e...