Ricerc@Sapienza

An effective hybrid computational framework is described here in order to assess the nonlinear dynamic response of piezoelectric energy harvesting devices. The proposed strategy basically consists of two steps. First, fully coupled multiphysics finite element (FE) analyses are performed to evaluate the nonlinear static response of the device. An enhanced reduced-order model is then derived, where the global dynamic response is formulated in the state-space using lumped coefficients enriched with the information derived from the FE simulations.

The presented text is an attempt to rethink the educational path of designers, around the modalities in defining morphological choices of design during a processual development, besides the building activity, “form the material’s transformation to an organization, able to

Relative gravity measurements were made at 12 sites on Mount St. Helens and 4 sites far afield during the summers of 2010, 2012, 2014, and 2016. Positive residual gravity changes of 0.05–0.06 ± 0.01 mGal from 2010 to 2016—a sign of mass addition—remain at proximal sites after accounting for the effects of changes in Crater Glacier shape and mass. Modeling of the 2010–2016 monitoring data indicates mass addition in the volcano magma reservoir, the volcano conduit, and/or the shallow hydrothermal aquifer.

OBJECTIVE: To examine whether the gender development of 120 Italian children (40 born to gay fathers [GFs] through surrogacy, 40 born to lesbian mothers [LMs] through sperm donation, and 40 born to heterosexual parents [HPs] through sexual intercourse) aged 3 to 9 years differed as a function of family type and/or child gender. METHODS: Children took part in observed free-play sessions while primary caregivers and nonparent caregivers were administered standardized interviews. Hierarchical linear modeling, analysis of covariance, simple effects analysis, and bootstrapping were conducted.

A progressive iterative approximation technique for rational least squares fitting curves is developed. The format is interesting in CAGD and improve recent algorithms. An improved chord method for root finding based on rational operators is also presented.

This study focuses on multi-hazard analysis for bridges, following a two-tier approach. First, it identifies relevant open issues and recent literature developments in the field, presenting data in a meaningful manner, with specific focus on the issues related with the analysis of hazard chain scenario treated as low probability–high consequence events. Second, it describes a practically useful and sufficiently generic approach for efficient computational investigation of hazard chain scenarios in highway bridges.

In this paper, it is discussed how physiological systems can be regulated by using the control theory as well as methodologies of system analysis, modeling, and identification. In physiology, the natural tendency to homeostasis, despite changes in the environments, implies a feedback-control scheme. The study of the natural regulation in physiological systems could help in its replacing when pathological situations are present. The basic concepts of homeostasis, modeling and control are here recalled, and some case studies are described

This article reports an overview of main issues related to hosting capacity and harmonic disturbances caused by electric vehicle (EV) penetration in a smart grid, taking into account renewable energy sources and energy storage systems as well as nonlinear loads. A new mixed deterministic and probabilistic method based on algorithms and new control strategies, able to perform EVs charging controls, is presented. The methodology shows that it is possible to achieve high levels of power quality, thanks to a pre-evaluation of harmonic disturbance.

Members of the atmospheric and astronomical science communities met to review the current state of the art of the submillimeter spectral region. Knowledge of gas spectroscopy is still questionable at these frequencies but is important to fully exploit upcoming
meteorological satellite measurements.

The design and operation of membrane purification plants implies the prediction and control of dynamic fouling phenomena as a key to succeed. In this research article, the boundary flux theory was used to set-up and control the operating framework and model the performance of a NF membrane operation, for the purification of olive mill wastewater (OMW) previously conducted to different pretreatments. Olive oil is produced by means of a technological process which avoids the use any chemicals.