Energy performance assessment of HVAC systems by inspection and monitoring

The paper discusses the collection and processing of energy performance data as part of the inspection of HVAC systems, aimed at identifying technically feasible and cost-effective Energy Conservation Opportunities (ECO), as required by EPBD. Case studies developed by the HARMONAC project have shown that low-cost or no-cost ECO's - mostly related to system operation and management - can be identified with an effective system monitoring. Building Management Systems (BMS) may be a powerful tool for this task, provided their HW and SW architecture is designed with adequate attention to energy monitoring. Dedicated instrumentation - such as electricity meters and temperature loggers - may also be employed as an alternative / integration to BMS monitoring. The paper also discusses the application of data analysis tools - such as "carpet plots" and "energy signatures" - to the identification of component malfunctioning, control problems, inadequate maintenance, or system schedule optimization, and to the evaluation of achieved energy saving

On the long time convergence of potential MFG

We look at the long time behavior of potential Mean Field Games (briefly MFG) using some standard tools from weak KAM theory. We first show that the time-dependent minimization problem converges to an ergodic constant $-\lambda$, then we provide a class of examples where the value of the stationary MFG minimization problem is strictly greater than $-\lambda$. This will imply that the trajectories of the time-dependent MFG system do not converge to static equilibria

On the long time convergence of potential MFG

We look at the long time behavior of potential Mean Field Games (briefly MFG) using some standard tools from weak KAM theory. We first show that the time-dependent minimization problem converges to an ergodic constant −λ, then we provide a class of examples where the value of the stationary MFG minimization problem is strictly greater than −λ. This will imply that the trajectories of the time-dependent MFG system do not converge to static equilibria

Weak KAM theory for potential MFG

We develop the counterpart of weak KAM theory for potential mean field games. This allows to describe the long time behavior of time-dependent potential mean field game systems. Our main result is the existence of a limit, as time tends to infinity, of the value function of an optimal control problem stated in the space of measures. In addition, we show a mean field limit for the ergodic constant associated with the corresponding Hamilton-Jacobi equation

On the long time convergence of potential MFG

We look at the long time behavior of potential Mean Field Games (briefly MFG) using some standard tools from weak KAM theory. We first show that the time-dependent minimization problem converges to an ergodic constant −λ, then we provide a class of examples where the value of the stationary MFG minimization problem is strictly greater than −λ. This will imply that the trajectories of the time-dependent MFG system do not converge to static equilibria

Evaluating soundscape in the Italian language: Validation of the translation of the English standardized perceptual attributes of the ISO/TS 12913-2:2018 and comparison with other Romance languages

The Soundscape Attributes Translation Project (SATP) has successfully translated English standardized perceptual attributes of the ISO/TS 12913-2:2018 into various languages. This paper validates the Italian translation of the widespread use of the soundscape circumplex model attributes for using standardized listening experiments protocol. The Italian translation of the ISO soundscape circumplex model was compared with the original English version. Furthermore, a comparison with other Romance languages (i.e., Portuguese, Spanish, French) that have already concluded the validation was carried out. The study was conducted following three phases: (i) a consensus on the final eight attributes of the Italian language was achieved, (ii) the recruitment of 30 na & iuml;ve normal-hearing Italian listeners and the preparation of the set-up for the listening tests was fostered, (iii) listening tests based on the 27 binaural recordings provided by the SATP project to examine the differences in subjective evaluations of the same sound environment were administrated in the Audio Space Lab of Politecnico di Torino. The main findings of the listening tests consisted in the validation of the Italian translations against English, in the comparison of the perceived loudness in the Italian and English listening tests that showed no significant differences, and in the satisfactory match of Italian translations in comparison with other Romance languages. Although slight differences probably due to cultural aspects were found, these outcomes are helpful to properly develop the Italian version of the ISO 12913-2 and to pursue accurate and replicable soundscape studies