Search results for " Technic"
showing 10 items of 154 documents
Skill Biased Technical Change and Misallocation: A Unified Framework
2019
Due to strict reliance on competitive labor markets, standard approaches which measure skill biased technical change (SBTC) conflate labor market distortions which prevent firms from choosing the efficient ratio between skilled and unskilled labor and `true' SBTC. This contrasts with recent evidence on decoupling between wages and productivity. To overcome this limitation, we present a unified framework to estimate SBTC which accounts for factor accumulation (FA) effects, and quantifies the discrepancy (i.e., relative misallocation) between the wage ratio (skilled to unskilled) and the marginal rate of technical substitution (MRTS). The suggested methodology takes advantage of recent develo…
Efficient Perovskite Light-Emitting Diodes: Effect of Composition, Morphology, and Transport Layers
2018
Organic-inorganic metal halide perovskites are emerging as novel materials for light-emitting applications due to their high color purity, band gap tunability, straightforward synthesis, and inexpensive precursors. In this work, we improve the performance of three-dimensional perovskite light-emitting diodes (PeLEDs) by tuning the emissive layer composition and thickness and by using small-molecule transport layers. Additionally, we correlate PeLED efficiencies to the perovskite structure and morphology. The results show that the PeLEDs containing perovskites with an excess of methylammonium bromide (MABr) to lead bromide (PbBr2) in a 2:1 ratio and a layer thickness of 80 nm have the highes…
Towards the electrochemical conversion of CO2 to formic acid at an applicative scale: technical and economic analysis of most promising routes
2021
In the last decade, the electrochemical conversion of CO 2 to formic acid, FA, using Sn‐based cathodes, was widely investigated. In this work, the technical feasibility and economic viability of this process were evaluated considering the most promising electrochemical routes reported in the literature. Five case studies, based on the utilisation of GDE technologies or high CO 2 pressures, were analysed. The cost for producing FA by the electrochemical route was compared with that of the conventional chemical route. Several scenarios were envisioned finding the target figures of merit, the potential bottlenecks (including low FA concentration, GDE cost and high energy consumption) of each t…
Freezing and storage at -20 °C provides adequate preservation of Toxoplasma gondii DNA for retrospective molecular analysis.
2014
Equipe EA MERS; International audience; Nucleic acid-based testing has become crucial for toxoplasmosis diagnosis. For retrospective (forensic or scientific) studies, optimal methods must be employed for DNA long-term storage. We compared Toxoplasma gondii detection before and after DNA storage using real-time PCR. No significant differences were found depending on duration or storage conditions at -20 °C or -80 °C.
Attendibilità dei modelli per la valutazione dei moduli elastici delle murature suggeriti dalle norme tecniche
2012
In this paper the results of an experimental investigation aimed to the assessment of Young moduli, rigidity moduli and other mechanical properties for different types of masonry are shown. The mechanical characteristics predicted by models proposed by some technical codes were compared against experimental data. This study was motivated by the suggestion of the Masonry Standards Joint Committee's (MSJC) code that, while proposing the use of such models, acknowledges the lack of testing in support of their validation. The experimental investigation has included compressive tests on components (blocks and mortar), diagonal compressive tests and ordinary compressive tests (orthogonally to bed…
Combiner prototypage et modèles en ateliers de co-conception de systèmes de culture pour une gestion durable des adventices : apports méthodologiques…
2019
Prod 2019-15déquipe SPEEAGESTADAGROSUPINRADOCT; Afin de concevoir des systèmes de culture conciliant production agricole, biodiversité et faible usage d’herbicides, nous avons combiné, en atelier, du prototypage de systèmes de culture par des agriculteurs avec des experts et différents modèles pour évaluer les systèmes en termes de (1) contrôle de la nuisibilité des adventices pour la production et leur contribution à la biodiversité avec les outils DECIFLORSYS (Colas et al., 2019) et FLORSYS (Colbach et al., 2014), (2) de durabilité, économique sociale et environnementale avec DEXiPM (Craheix et al., 2012) ; (3) d’efficacité vis-à-vis de la gestion des adventices et de leur faisabilité tec…
LU Bibliotēka ver durvis ERASMUS+ viesiem
2017
Raksts sniedz ieskatu dažādu valstu bibliotēku darbinieku gūtajā pieredzē LU Bibliotēkā Eiropas Savienības programmas ERASMUS+ ietvaros.
L’attenzione per il benessere organizzativo nella Pubblica Amministrazione italiana. Analisi critica del questionario CIVIT/ANAC
2018
L'articolo propone una riflessione sugli studi inerenti al benessere organizzativo nel nostro Paese, e un'analisi secondaria sul questionario per la valutazione del Benessere organizzativo nella pubblica amministrazione italiana CIVIT/ANAC realizzata tra il personale tecnico amministrativo di alcuni atenei italiani, con tre obiettivi: confrontare le dimensioni del benessere incluse nel questionario con i fattori considerati nei più noti modelli che in letteratura hanno definito il costrutto del benessere al lavoro; controllare attendibilità e validità dello strumento; identificare la struttura semantica soggiacente alle risposte, prescindendo dall'impostazione precostituita del questionario.
Development of a New Type of Incisal Table for Prosthetic Articulators
2010
This study illustrates the effectiveness of an advanced incisal table surface, featuring adjustable curvature, in the sake of more accurate articulator kinematics in anterior teeth reconstruction. Prosthetic articulators, used by dental technicians in reconstructive dentistry, are adjustable instruments that simulate the motion of mastication between dental casts: usually, the forward motion (protrusion) of the mandible is guided by sliding a pin over a flat table in order to recreate those movements when incisal teeth are missing. However, such protrusion is an approximation of the exact motion, since flat incisal tables have a limited set of adjustments. Customized software has been devel…
Single- and Partial Multiple-Unit Provisional Restorations in the Esthetic Area
2019
The immediate implant-supported provisional restoration in the partially or totally edentulous patients is a predictable and well-accepted procedure in dentistry. The Glossary of Prosthodontic Terms defines a provisional prosthesis as a prosthesis designed to improve or evaluate esthetics, speech, and occlusal function in a period of time between implant placement and final restoration with a definitive prosthesis. Planning and design should always take place during the pre-surgical phase of treatment and constitute a tool for communication among the members of the team, which in most cases is of a multidisciplinary nature (prosthodontist, surgeon, dental technician, and patient).