This paper presents experimental results of a coverage analysis in a WCDMA network using the 850 MHz band; an urban electromagnetic propagation environment is considered. Obtained coverage estimation maps are based on Krige statistical method of interpolation. Key performance parameters used in this work are the CPICH and Ec. The results could be used to identify problems and help to optimize c...

We investigate the impossibility of solving certain problems in an unreliable distributed system where multiple processes may fail. A necessary condition is provided for the solvability of problems in the presence of multiple faulty processes, and variants of problems which are unsolvable in the presence of a single faulty pro~~s (such as consensu.s, ehoo~ing a leader, r~g, matching) are shown ...

Electronic structure theory under the influence of apolar solvents suffers from substantial methodical difficulties since in this case the solvent-induced solute polarization originates mainly from specific directional interactions and higher electric multipoles. Continuum solvation models based on the dielectric solvent response such as the PCM approach ignore such interactions and can therefo...