The LHCb experiment at CERN is undergoing an upgrade in preparation for the Run 3 data taking period of the LHC. As part of this upgrade the trigger is moving to a fully software implementation ...operating at the LHC bunch crossing rate. We present an evaluation of a CPU-based and a GPU-based implementation of the first stage of the High Level Trigger. After a detailed comparison both options are found to be viable. This document summarizes the performance and implementation details of these options, the outcome of which has led to the choice of the GPU-based implementation as the baseline.
The role of technology is growing in intra-party democracy (IPD) processes. This article presents a proposal for analysing digital IPD, by applying empirical democratic theory dimensions. To test our ...methodology, we analyse two different types of parties, a new digital one, Pos, and a traditional one undergoing reform, the Labour Party. Our analysis shows, first, that the application of technology is not neutral, with a differential impact depending on the specific democratic dimension considered and, secondly, that-due to convergent developments- new and established parties are closer in their digital IPD than expected. These results point out the relevance, for the ongoing debate on the quality of IPD, of considering the impact of digital on different democratic dimensions and its evolution over time.
•The impact of new Italian weather data on building simulation was analysed.•Two simulations were carried out with a dated and an up-dated dataset, for 52 locations.•Italian representative ...multifamily house models were used.•For each model, two cases were studied: uninsulated and insulated constructions.•The results highlight great differences in ideal energy.
Dynamic thermal simulation is attracting the interest of designers thanks to the availability of numerical codes. However, one of the main problems facing the potential users is hourly-weather data availability. In Italy, the main source for the data is drawn upon the IGDG database. It is provided by the EnergyPlus weather site and the related measurements were collected between 1951 and 1970. A new set of files, gathered between 1989 and 2014, has recently become available. Nevertheless, it needs additional work to be directly implemented in energy simulation codes, which can lead users to download and apply the already available IGDG database files. In order to evaluate the ensuing effects, 52 Italian weather file locations were selected, and two simulations were carried out on seven multifamily-house models considering the difference between the results obtained using the old and new weather data. Since the locations of the two databases do not coincide, a matching method was implemented. This paper compares the simulation results arising from the choice of the weather file pertaining to the two databases. The weather files were selected within a 50 km range and 50 m elevation difference, to minimize misrepresentative results due to different climatic conditions. The models are typical of the most widespread building typology of the Italian building stock. For each model, two building fabric types were considered, the former was poorly insulated, the latter was well insulated thanks to an advanced refurbishment activity. Simulations were carried out with the EnergyPlus software.
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