Search results for "format"

Enhancing identification of causal effects by pruning

2018

Causal models communicate our assumptions about causes and effects in real-world phe- nomena. Often the interest lies in the identification of the effect of an action which means deriving an expression from the observed probability distribution for the interventional distribution resulting from the action. In many cases an identifiability algorithm may return a complicated expression that contains variables that are in fact unnecessary. In practice this can lead to additional computational burden and increased bias or inefficiency of estimates when dealing with measurement error or missing data. We present graphical criteria to detect variables which are redundant in identifying causal effe…

Ocena jakości informacji w wybranych polskich katalogach stron WWW

2017

Artykuł prezentuje ocenę jakości informacji w wybranych polskich katalogach stron WWW. W pierwszej części artykułu zaprezentowano charakterystykę, klasyfikację i ranking popularności katalogów stron. Następnie przedstawiono metodykę badania oceny jakości informacji w katalogach stron WWW. Do pomiaru jakości informacji zaproponowano kwestionariusz ankietowy. W drugiej części artykułu przedstawiono wyniki ewaluacji jakości informacji w wybranych katalogach stron WWW. Należy podkreślić, że wyniki badań są ograniczone ze względu na niewielką reprezentatywność próby. Artykuł kończy podsumowanie zawierające wnioski oraz wskazówki dotyczące dalszych kierunków badań.

Sexual Satisfaction and Quality of Life in Cardiovascular Patients: The Mediating Role of Anxiety

2023

Background: Cardiovascular diseases represent one of the most important problems for public health. Research indicates that elderly patients consider sexual satisfaction as a fundamental aspect of their quality of life and a better sexual function is related to higher general wellbeing. Objective: The main objective of this study was to investigate the mediating role of anxiety and depression in the relationship between quality of life and sexual satisfaction in cardiovascular (CVD) patients. Methods: The sample comprised 128 adult patients, males and females, hospitalized in a Cardiology Rehabilitation clinical center. To collect data, the following were used: a demographic information she…

Simbolizzazioni e costruzione del setting formativo: verso un modello psicologico della qualità universitaria

2010

Introduzione Il tema della qualità universitaria ha acquisito negli ultimi anni una centralità crescente che si è spesso tradotta nell’adozione di modelli di valutazione dell’offerta formativa di impronta economico-gestionale. Minore risonanza hanno invece avuto proposte che, basate su un’idea della qualità dell’esperienza universitaria come dispositivo capace di favorire l’investimento progettuale degli studenti tramite l’avvio di processi di co-costruzione di significati e di elaborazione della loro domanda di formazione, possano costituire importanti occasioni di empowerment. Obiettivi e metodi Nell’ambito di un più articolato progetto di ricerca finalizzato alla validazione di un modell…

La qualità dei processi formativi

2009

Selective writing and read-out of a register of static qubits

2013

We propose a setup comprising an arbitrarily large array of static qubits (SQs), which interact with a flying qubit (FQ). The SQs work as a quantum register, which can be written or read-out by means of the FQ through quantum state transfer (QST). The entire system, including the FQ's motional degrees of freedom, behaves quantum mechanically. We demonstrate a strategy allowing for selective QST between the FQ and a single SQ chosen from the register. This is achieved through a perfect mirror located beyond the SQs and suitable modulation of the inter-SQ distances.

Modeling and designing a robotic swarm: A quantum computing approach

2023

Nature is a neverending source of inspiration for technology. Quantum physics suggests applications to- ward quantum computing. Swarms’ self-organization leads to robotic swarm developments. Here, quantum computing is applied to swarm robotics. We model local interactions with a quantum circuit, testing it on simulators and quantum computers. To relate local with global behavior, we develop a block matrix-based model. Diagonal sub-matrices contain information on single robots; off-diagonal sub-matrices are the pairwise interaction terms. Comparing different swarms means comparing different block matrices. Choosing initial values and computation rules for off-diagonal blocks (with a particul…

CONTROLLING THE QUANTUM DYNAMICS OF MULTIPARTITE JOSEPHSON CIRCUITS

2011

CONTROLLING THE QUANTUM DYNAMICS OF MULTIPARTITE JOSEPHSON CIRCUITS

Superconducting tunnel junction fabrication on three-dimensional topography based on direct laser writing

2020

Superconducting junctions are widely used in a multitude of applications ranging from quantum information science and sensing to solidstate cooling. Traditionally, such devices must be fabricated on flat substrates using standard lithographic techniques. In this study, we demonstrate a highly versatile method that allows for superconducting junctions to be fabricated on a more complex topography. It is based on maskless direct laser writing and two-photon lithography, which allows writing in 3D space. We show that high-quality normal metal–insulator–superconductor tunnel junctions can be fabricated on top of a 20-lm-tall three-dimensional topography. Combined with conformal resist coating m…

Quantum Information by Adiabatic Passage : Quantum Gates and Decoherence

2007

The first part of this thesis is about adiabatic quantum processes designed for the implementation of quantum logic gates, the elementary components of quantumcomputers, by the interaction of pulsed laser fields with atoms. The adiabaticmethods allow robust processes, i.e. which are not sensitive to the fluctuationsof experimental parameters. The processes described in this thesis only requireaccurate control of the polarisations and the relative static phases of thelaser fields. These processes allow the implementation of a universal set ofquantum gates, which make possible the implementation of all the other quantumgates by combinations.The second part of this thesis concerns the effects …