Time-Dependent Contraction Hierarchies is a routing technique that solves the shortest path problem in graphs with time-dependent edge weights, that have to satisfy the FIFO property. Although it shows great speedups over Dijkstra’s Algorithm the preprocessing is slow. We present a parallelized version of the preprocessing taking advantage of the multiple cores present in todays CPUs. Nodes ind...

A general fundamental relation connecting the correlation of Stokes and anti-Stokes modes to the quantum statistical behavior of vibration and pump modes in Raman-active materials is derived. We show that under certain conditions this relation can be used to determine the equilibrium number variance of phonons. Time and temperature ranges for which such conditions can be satisfied are studied a...

Todays world relies heavily on spatial data to manage the natural and built environments. Monitoring and controlling the impact of human activities on the environment and the impact of natural environmental changes (including natural hazards) on the built environment is a major policy driver for many jurisdictions. The mitigation of natural hazards including tsunamis, earthquakes and landslides...

Within two projects it is studied how the rapid radiative transfer model JURASSIC (Juelich Rapid Spectral Simulation Code) performs in cluster computing environments. We do so, having data analysis of future atmospheric satellite experiments in mind, which are likely to provide 10 – 100 times more measurement data than todays instruments. First studies presented here are based on radiance measu...

In this paper a telepresence system for microand macroscopic assembly is presented. The proposed system integrates haptic devices on the operator side for reflecting gripping and collision forces as well as artificial scene information. Scaling of the position and force information is implemented to overcome the physical constraints of microas well as macroassembly tasks. Furthermore, the paper...

Developing a distributed application is hard due to the complexity inherent to distributed communication. Moreover, distributed object communication technology is always changing, todays edge technology will become tomorrows legacy technology. This paper proposes an incremental approach to allow a divide and conquer strategy that copes with these problems. It presents a design pattern for distr...

As business processes gain more importance in todays business environment, their unimpeded execution is crucial for a company’s success. Corporate decision makers are faced with a wide spectrum of potential risks on the one hand and a plenitude of security safeguards on the other hand. This paper gives an overview of a new approach for the elicitation of security requirements of business proces...

Reaxys is an authoritative web-based workflow solution designed for chemistry researchers in drug discovery, chemicals and academic research [1]. Reaxys supports research and fuels discovery by integrating searches for reaction and substance data with synthesis planning and chemical sourcing. With historical coverage dating right back to 1771 and continuing through todays cutting-edge research,...

This paper considers the multi-processing module Prefork in the Unix version of Apache, one of the most widely applied software solutions for Web servers in todays Internet. It analyzes its dynamic pool size behavior. For the first time, we propose a queueing model to approximate the performance of the latter. Numerical results computed by advanced matrix-analytic methods are compared with meas...

Electrical Machines areintegraland key equipments for engineering undergraduate, graduate, research scholars& for any processing industries. The modernization & automation of these machines are very much necessary in todays computer based environment. The available techniques for automation are very costly & unaffordable. This paper presents a new low cost, accurate & effective method for the a...