In distributed antenna system (DAS), since the distances from the remote antenna units (RAUs) to the mobile are different, the transmitted power of pilot symbol in orthogonal frequency division multiplexing (OFDM) needs to be optimized to provide a reliable channel estimation for the purpose of coherent detection. In this paper, we present a novel pilot power allocation strategy for OFDM in DAS...

The problem A pilot or feasibility trial in preparation for a randomised trial of effectiveness is a study where part or all of a future trial is carried out on a smaller scale to see whether it can be done and whether we should proceed with it. We know reporting of pilot and feasibility studies is poor, and that these studies are particularly important when designing cluster randomised trials ...

This paper reports on the results obtained by the pilot operation of Trusted Third Parties (TTP) for secure telemedical applications over the WWW. The work reported on herein was carried out within the context of EUROMED-ETS, a R&D project funded by the INFOSEC office of Directorate General XIII of the European Union. The paper discusses the platform used, the security needs of the specific app...

A dynamic model developed in the HYSYS process simulator was validated using experimental data obtained from a pilot scale cyclohexane / n-heptane distillation. The resulting model was linked to the pilot unit’s DeltaV (Emerson Process Management) process control software. This link allowed non-measured parameter estimation to occur in parallel with the operation and control of the pilot plant ...

AIM The aim of this study was to adapt the Quality of Life in Depression Scale to Polish conditions. The scale determines the quality of life, defined in terms of the concept of needs, and focuses on patients with depressive disorders. Since its basic version has been developed, the tool was adapted in many countries, also outside Europe. METHOD The adaptation procedure included the translati...

Large-scale multiple-input multiple-output (MIMO) with high spectrum and energy efficiency is a very promising key technology for future 5G wireless communications. For large-scale MIMO systems, accurate channel state information (CSI) acquisition is a challenging problem, especially when each user has to distinguish and estimate numerous channels coming from a large number of transmit antennas...

In the present work, four green processes have been compared to evaluate their potential to obtain rosemary extracts with in vitro anti-proliferative activity against two colon cancer cell lines (HT-29 and HCT116). The processes, carried out under optimal conditions, were: (1) pressurized liquid extraction (PLE, using an hydroalcoholic mixture as solvent) at lab-scale; (2) Single-step supercrit...

The decimal elimination capacity (DEC) of slow sand filters (SSF) for viruses, bacteria and oocysts of Cryptosporidium has been assessed from full-scale data and pilot plant and laboratory experiments. DEC for viruses calculated from experimental data with MS2-bacteriophages in the pilot plant filters was 1.5–2 log10. E. coli and thermotolerant coliforms (Coli44) were removed at full-scale and ...