The continued and increasing use of online training raises the question of whether the most effective training methods applied in live instruction will carry over to different online environments in the long run. Behavior Modeling (BM) approach – teaching through demonstration — has been proven as the most effective approach in a face-to-face (F2F) environment. A quasi-experiment was conducted ...

Congestion control in Signaling System #7 faces new challenges as mobile communication systems and Intelligent Networks grow rapidly. New services change traffic patterns, add to signalling network load, and raise demands on shorter service completion times. To handle new demands, the congestion control mechanisms must foresee an overload situation, and respond to it so that the network can mai...

4ongestion controls are a key factor in achieving the robust performance required of common channel signaling (CCS) networks in the face of partial network failures and extreme traffic loads, especially as networks become large and carry high traffic volume. The CCITT recommendations define a number of types of congestion control, and the parameters of the controls must be well set in order to ...

Wireless OFDM systems offer the opportunity to transmit data simultaneously on the downlink of a cell to different wireless terminals by assigning different sets of subcarriers to different terminals. Due to the timeand frequency varying nature of subcarrier gains doing this dynamically has been shown to be beneficial in terms of various transmission metrics, i.e. average throughput, consumed p...

This paper analyzes some of the reliability features of the transport layers of the signaling system no. 7 (SS7) and compares them to the reliability and performance achievable with the protocol stack for signaling transport over IP currently being defined in the SIGTRAN working group of the IETF. It identifies parameters which have to be adjusted and restrictions to available addressing option...

3.1 Kinetic models and their dynamic behaviour in a nutshell Examples: Metabolic network; transport reactions; signaling system; gene expression Stoichiometric coefficients nir Stoichiometric coefficients denote the proportions, with which the molecules of substrates and products enter the biochemical reactions. One can summarise the stoichiometric coefficients in a matrix N. The rows refer to ...

Our immune system is a highly sophisticated process that cannot be well understood using the wet-bench facility alone. I will focus on the innate immune system, the activation of Toll-like receptor (TLR) 4 to lipopolysaccaride stimuli that leads to the induction of typical proinflammatory cytokines such as TNF-α and IL-1β. The understanding of such complex signaling process requires i) the dyna...

Personal mobility is one of the goals of Universal Personal Telecommunications (UPT) being specified for future deployment. Most current efforts focus on telephony, with SS7 signaling. However, many of the same goals can be accomplished for multimedia services, by using existing Internet protocols. We describe a multimedia call/conference setup protocol that provides personal videophone address...

This paper illustrates the use of priorities in process algebras by a real-world example dealing with the design of a safety-critical network which is part of a railway signaling system. Priorities in process algebras support an intuitive modeling of distributed systems since undesired interleavings can be suppressed. This fact also leads to a substantial reduction of the sizes of models. We ha...

The Hippo signalling pathway has a crucial role in growth control during development, and its dysregulation contributes to tumorigenesis. Recent studies uncover multiple upstream regulatory inputs into Hippo signalling, which affects phosphorylation of the transcriptional coactivator Yki/YAP/TAZ by Wts/Lats. Here we identify the p38 mitogen-activated protein kinase (MAPK) pathway as a new upstr...