Search results for " Control"

PROPAGAZIONE DI ONDE GUIDATE IN LAMINATI MULTISTRATO INCOLLATI: ANALISI NUMERICA E SPERIMENTALE

2010

Protective ventilation with high versus low positive end-expiratory pressure during one-lung ventilation for thoracic surgery (PROTHOR): study protoc…

2019

Background: Postoperative pulmonary complications (PPC) may result in longer duration of in-hospital stay and even mortality. Both thoracic surgery and intraoperative mechanical ventilation settings add considerably to the risk of PPC. It is unclear if one-lung ventilation (OLV) for thoracic surgery with a strategy of intraoperative high positive end-expiratory pressure (PEEP) and recruitment maneuvers (RM) reduces PPC, compared to low PEEP without RM. Methods: PROTHOR is an international, multicenter, randomized, controlled, assessor-blinded, two-arm trial initiated by investigators of the PROtective VEntilation NETwork. In total, 2378 patients will be randomly assigned to one of two diffe…

Hydrological simulation using a bivariate approach based on copulas for the assessment of inundation risk scenarios down-stream of flood control rese…

2021

Aim of this study was to assess operational reservoir rules for evaluating flood risk scenarios using a MonteCarlo bivariate framework. It involves a stochastic procedure to calculate flood hydrographs and, then, flood inundation area evaluation through a 2D hydraulic model to estimate the inundation risk and, as consequence, the relative damage evaluation, under different operation strategies of an upstream reservoir. The entire procedure can be summarised as follows: single synthetic stochastic rainfall events have been derived using a Monte Carlo proce-dure through a bivariate copulas analysis; synthetic bivariate stochastic inflow hydrographs have been derived by using a conceptual full…

Randomized trial of primary debulking surgery versus neoadjuvant chemotherapy for advanced epithelial ovarian cancer (SCORPION-NCT01461850)

2020

ObjectiveTo investigate whether neoadjuvant chemotherapy followed by interval debulking surgery is superior to primary debulking surgery in terms of perioperative complications and progression-free survival, in advanced epithelial ovarian, fallopian tube or primary peritoneal cancer patients with high tumor load.MethodsPatients with advanced epithelial ovarian, fallopian tube or primary peritoneal cancer (stage IIIC-IV) underwent laparoscopy. Patients with high tumor load assessed by a standardized laparoscopic predictive index were randomly assigned (1:1 ratio) to undergo either primary debulking surgery followed by adjuvant chemotherapy (arm A), or neoadjuvant chemotherapy followed by int…

Externalizing behaviour and academic performance – the cross-lagged relationship during school transition

2017

The current study examined the over-time association between externalizing behaviour problems and academic performance during school transition in a cross-lagged design. The main focus was to revea...

The interplay between maternal homework involvement, task-avoidance, and achievement among adolescents.

2021

This study examined three aspects of maternal homework involvement (i.e., the quantity, quality, and source of initiative) and their direct and indirect associations with adolescents’ task-avoidant behavior in homework situations and academic achievement. The sample consisted of Finnish mothers and their adolescents who were transitioning from primary to lower secondary school. Mothers rated the quantity of their homework involvement (i.e., monitoring and help), quality of their homework involvement (i.e., autonomy support and psychological control), and source of initiative (i.e., mother- vs. adolescent-initiated monitoring and help) at the beginning of Grade 6. They also reported on adole…

Critical issues and future prospects of the secondary substation in smart grid context

2014

This paper is focused on the new role of the secondary substation in the smart grids context. This innovative view has been proposed and developed in the framework of two Research Projects: NewCabELARC Project and Reipersei Project. The latter provides a concrete and comprehensive low cost solutions for the smart grid monitoring and control, allowing the real diffusion and integration of Distributed Generation and the full exploitation of Renewable Energy Sources. In this field, this paper shows how the secondary substation (SS) takes the role of smart transducer node where innovative devices can be located, collecting the measurement data coming from the field devices (power and energy met…

Temporal spying and concealing process in fibre-optic data transmission systems through polarization bypass

2014

Recent research has been focused on the ability to manipulate a light beam in such a way to hide, namely to cloak, an event over a finite time or localization in space. The main idea is to create a hole or a gap in the spatial or time domain so as to allow for an object or data to be kept hidden for a while and then to be restored. By enlarging the field of applications of this concept to telecommunications, researchers have recently reported the possibility to hide transmitted data in an optical fibre. Here we report the first experimental demonstration of perpetual temporal spying and blinding process of optical data in fibre-optic transmission line based on polarization bypass. We succes…

A universal optical all-fiber omnipolarizer

2012

International audience; Wherever the polarization properties of a light beam are of concern, polarizers and polarizing beamsplitters (PBS) are indispensable devices in linear-, nonlinear- and quantum-optical schemes. By the very nature of their operation principle, transformation of incoming unpolarized or partially polarized beams through these devices introduces large intensity variations in the fully polarized outcoming beam(s). Such intensity fluctuations are often detrimental, particularly when light is post-processed by nonlinear crystals or other polarization-sensitive optic elements. Here we demonstrate the unexpected capability of light to self-organize its own state-of-polarizatio…

The Rise and Fall of the Unhasu Orchestra

2018

The Ŭnhasu Orchestra was a major North Korean ensemble in 2009–2013. It was established by Kim Jong Il (Kim Chŏng’il, 김정일) and was composed of young musicians and singers of both genders, several of them having studied in foreign higher educational institutions in countries like Austria, Italy, Russia and China. Its members represented the core class of the North Korean society. It was ostensibly meant to display the high quality of North Korean art and engage at this level also in international cultural diplomacy, both in terms of physical visits, and in terms of DVD and internet publishing. In addition to domestic concerts, the Ŭnhasu Orchestra performed with visiting Russian artists, and…