Search results for "Fidelity"
showing 9 items of 79 documents
SURVEY AND VIRTUAL RECONSTRUCTION OF ANCIENT ROMAN FLOORS IN AN ARCHAEOLOGICAL CONTEXT
2019
Abstract. Despite the consistent development of approaches aimed at the virtual reconstruction of whole houses or archaeological monuments, the variety of technologies involved in virtual reconstruction procedures and the complexity of a rigorous process to provide validation models, seems to limit a univocal and shared standards adoption. For example, compared to the large number of contributions on the virtual reconstruction of whole architectures or cultural heritage sites, only a few works have proposed a rigorous workflow specific to mosaics and ancient floors and to their virtual reconstruction. The goal of this work is to present the first results on the virtual reconstruction of the…
Fundamental bounds on qubit reset
2020
Qubit reset is a basic prerequisite for operating quantum devices, requiring the export of entropy. The fastest and most accurate way to reset a qubit is obtained by coupling the qubit to an ancilla on demand. Here, we derive fundamental bounds on qubit reset in terms of maximum fidelity and minimum time, assuming control over the qubit and no control over the ancilla. Using the Cartan decomposition of the Lie algebra of qubit plus two-level ancilla, we identify the types of interaction and controls for which the qubit can be purified. For these configurations, we show that a time-optimal protocol consists of purity exchange between qubit and ancilla brought into resonance, where the maximu…
Quantum memories with zero-energy Majorana modes and experimental constraints
2016
In this work we address the problem of realizing a reliable quantum memory based on zero-energy Majorana modes in the presence of experimental constraints on the operations aimed at recovering the information. In particular, we characterize the best recovery operation acting only on the zero-energy Majorana modes and the memory fidelity that can be therewith achieved. In order to understand the effect of such restriction, we discuss two examples of noise models acting on the topological system and compare the amount of information that can be recovered by accessing either the whole system, or the zero-modes only, with particular attention to the scaling with the size of the system and the e…
The role of manikins in nursing students' learning: A systematic review and thematic metasynthesis
2021
Abstract Objectives To summarise and synthesise findings from qualitative primary research studies of nursing students' experiences from educational activities using manikins to gain a deeper understanding of the role these manikins play in the students' learning. Design and data sources A systematic review and thematic metasynthesis were conducted. Cinahl+, Ovid Medline, ERIC and Embase were searched systematically. Review methods Sandelowski and Barroso's framework guided the review process. A comprehensive search to identify qualitative studies of nursing students' experiences from learning with manikins was performed in January 2019 and updated in April 2020. Study selection was guided …
Attività extralavorativa durante la malattia: obblighi del lavoratore e contestazione disciplinare
2021
Il contributo analizza una recente pronuncia della Suprema Corte. La sentenza in esame affronta la questione dello svolgimento di attività lavorativa presso terzi da parte del dipendente assente per malattia e si allinea al consolidato orientamento secondo il quale, pur non sussistendo un divieto assoluto di effettuare altra attività durante il periodo di sospensione del rapporto di lavoro, è legittimo il recesso del datore di lavoro quando questa configuri la violazione degli specifici obblighi contrattuali di diligenza e fedeltà, nonché dei doveri generali di correttezza e buona fede. The note analyses a recent judgment of the Supreme Court of Cassation. The decision deals with the work d…
Hacia la implementación de un modelo de atención temprana por parte de una Organización Paraguaya
2020
Implementation science has been developed to help understand why evidence-based practices are not adopted as rapidly as they might. We describe here the process a rehabilitation center in Paraguay is undergoing to transform itself into a state-of-the-art early intervention program. We describe the organization and its contextual strengths and barriers, the model it chose to implement, and the implementation procedures it has attempted. The implications for model fidelity are highlighted, as this organization needed to make adaptations to the model as designed, to fit the particular context of its mission and the Paraguayan culture. Features of the Routines-Based Model are described. La cie…
Data from: Low fitness at low latitudes: wintering in the tropics increases migratory delays and mortality rates in an Arctic breeding shorebird
2020
1. Evolutionary theories of seasonal migration generally assume that the costs of longer migrations are balanced by benefits at the non-breeding destinations. 2. We tested, and rejected, the null hypothesis of equal survival and timing of spring migration for High Arctic breeding sanderling Calidris alba using six and eight winter destinations between 55° N and 25° S, respectively. 3. Annual apparent survival was considerably lower for adult birds wintering in tropical West-Africa (Mauritania: 0.74 and Ghana: 0.75) than in three European sites (0.84, 0.84 and 0.87) and in subtropical Namibia (0.85). Moreover, compared with adults, second calendar-year sanderlings in the tropics, but not in …
Exploring User Acceptance of Free Wireless Fidelity Public Hot Spots : An Empirical Study
2008
Research regarding commercial and free wireless fidelity (Wi-Fi) public hot spots acceptance and adoption is sketchy. Therefore, it has become imperative to understand the critical factors that affect their acceptance. The focus of this study is free Wi-Fi public hot spot users, with the objective to better understand their user acceptance. In doing so, this study integrated two well-established initial acceptance models, specifically, the technology acceptance model and the diffusion of innovation theory. This study was conducted using an on-line survey that collected data from 129 users. It uses the Partial Least Square (PLS) technique to examine the relationship between variables. The re…
Kohti sosioemotionaalisia taitoja ja lasten osallisuutta tukevaa toimintakulttuuria – ProVaka-toimintamallin pilottivaiheen analyysi
2021
Kaikkien lasten osallisuuden tukeminen edellyttää tarvittavan kehityksen ja oppimisen tuen järjestämistä varhaiskasvatukseen. Osallistavan varhaiskasvatuksen toimintakulttuurin kehittämisellä tuetaan koko lapsiryhmän kanssa toteutettavia toimintatapoja tukemaan kaikkien lasten käyttäytymistä ja sosioemotionaalisia taitoja. Käyttäytymispsykologinen Positiivisesti ryhmässä oppiva varhaiskasvatus (ProVaka) -toimintamalli edistää tutkimusnäyttöön pohjautuvien menetelmien käyttöönottoa sosiaalisen käyttäytymisen tukemisessa. ProVaka-toiminnassa korostuvat yhteisesti sovitut ja selkeät käyttäytymisodotukset, toivotun käyttäytymisen systemaattinen opettaminen ja käyttäytymiseen kohdennetulla posit…