Search results for "efficien"
showing 10 items of 3014 documents
Vecāku pašefektivitāte un tās saistība ar bērna tempermentu pirmskolas vecumā
2015
Bakalaura darba mērķis ir noskaidrot, vai atšķiras tēvu un māšu pašefektivitāte un bērna tempermenta vērtējumi, vai pastāv saistība starp vecāku pašefektivitāti un bērna tempermentu, un vai atšķiras pašefektivitāte un bērnu tempermenta saistības tēviem un mātēm. Dati tika ievākti, izmantojot divas aptaujas- “Vecāku kompetences izjūtas skalas” (VKI/Parenting Sense of Competence Scale) apakšskalu “Efektivitāte” un Aptauja par bērnu tempermentu, ļoti īsais variants (Very Short Form of the Children’s Behavior Quetionnaire) (CBQ_VSF)) (Rothbart,Ahadi,Hershey&Fisher,2001)” kura ietver sevī trīs apakškalas: reaktivitāte, reakciju apzināta kontrole un negatīva emocionalitāte. Pētījumā piedalījās 90…
Numerical Simulations of the Flow Field of a Submerged Hydraulic Jump over Triangular Macroroughnesses
2021
The submerged hydraulic jump is a sudden change from the supercritical to subcritical flow, specified by strong turbulence, air entrainment and energy loss. Despite recent studies, hydraulic jump characteristics in smooth and rough beds, the turbulence, the mean velocity and the flow patterns in the cavity region of a submerged hydraulic jump in the rough beds, especially in the case of triangular macroroughnesses, are not completely understood. The objective of this paper was to numerically investigate via the FLOW-3D model the effects of triangular macroroughnesses on the characteristics of submerged jump, including the longitudinal profile of streamlines, flow patterns in the cavity regi…
Pannelli traslucidi preassemblati “a secco” e precompressi realizzati con vetromattoni “modificati”
2011
L’articolo illustra le problematiche connesse al progetto di un pannello preassemblato a secco e precompresso realizzato impiegando vetromattoni “modificati”, energeticamente efficienti. Tra le 21 nuove configurazioni del vetromattone individuate è stata indagata per via analitico-sperimentale quella più efficiente dal punto di vista energetico, al fine di valutarne la resistenza meccanica e conoscere lo stato deformativo che si genera nel giunto adesivo tra conchiglie di vetro e “cintura termica”.Per realizzare un taglio termico tra le due conchiglie di vetro e consentire l’inserimento di una o più lastre all’interno dell’intercapedine del vetromattone è stata, infatti, progettata una “cin…
Performance indicators to assess water & wastewater service criticalities and investments efficiency and effectiveness in the Italian regulatory cont…
2017
EVAPOTRANSPIRATION, CROP COEFFICIENTS AND WATER USE EFFICIENCY OF CYPERUS ALTERNIFOLIUS L. AND TYPHA LATIFOLIA L. IN A PILOT-SCALE HORIZONTAL SUBSURF…
2014
In constructed wetland systems (CWs) for wastewater treatment, the efficiency of the system is highly affected by the system’s water balance. This study shows the results of a series of water balance measurements obtained in 2013 from a pilot horizontal-subsurface flow (HSSF) system in the West of Sicily (Italy). The system included three separate units, one planted with Cyperus alternifolius L., one planted with Typha latifolia L. and an unplanted unit. The system was fed with urban wastewater from an activated-sludge wastewater treatment plant. The aim of the study was to compare evapotranspiration rates (ET), crop coefficients (Kc) and water use efficiency (WUE) of two root emergent macr…
Tribological and Mechanical Properties of the Nanostructured Superlattice Coatings with Respect to Surface Texture
2022
This research is funded by the Latvian Council of Science, project “Carbon-rich self-healing multifunctional nanostructured smart coatings (NSC) for high-tech applications using high-power confined plasma technology for their deposition”, project No. 2019/1-0385.
Energy Efficient Optimization for Wireless Virtualized Small Cell Networks With Large-Scale Multiple Antenna
2017
Wireless network virtualization is envisioned as a promising framework to provide efficient and customized services for next-generation wireless networks. In wireless virtualized networks (WVNs), limited radio resources are shared among different services providers for providing services to different users with heterogeneous demands. In this paper, we propose a resource allocation scheme for an orthogonal frequency division multiplexing-based WVN, where one small cell base station equipped with a large number of antennas serves the users with different service requirements. In particular, with the objective to obtain the energy efficiency in the uplink, a joint power, subcarrier, and antenn…
Computer Networks
2018
This book constitutes the thoroughly refereed proceedings of the 25th International Conference on Computer Networks, CN 2018, held in Gliwice, Poland, in June 2018. The 34 full papers presented were carefully reviewed and selected from 86 submissions. They are organized in topical sections on computer networks; teleinformatics and telecommunications; queueing theory; cybersecurity and quality service.
Online ^{222}Rn removal by cryogenic distillation in the XENON100 experiment
2017
International audience; We describe the purification of xenon from traces of the radioactive noble gas radon using a cryogenic distillation column. The distillation column was integrated into the gas purification loop of the XENON100 detector for online radon removal. This enabled us to significantly reduce the constant$^{222}$ Rn background originating from radon emanation. After inserting an auxiliary$^{222}$ Rn emanation source in the gas loop, we determined a radon reduction factor of $R\,>\,27$ (95% C.L.) for the distillation column by monitoring the$^{222}$ Rn activity concentration inside the XENON100 detector.