Search results for "Oise"

Synchronizing Two Superconducting Qubits through a Dissipating Resonator

2021

A system consisting of two qubits and a resonator is considered in the presence of different sources of noise, bringing to light the possibility of making the two qubits evolve in a synchronized way. A direct qubit–qubit interaction turns out to be a crucial ingredient, as well as the dissipation processes involving the resonator. The detrimental role of the local dephasing of the qubits is also taken into account.

“TÄMÄ HYVÄ?” KURKISTUS LUKU- JA KIRJOITUSTAIDOTTOMIEN SUOMENOPPIJOIDEN ESITTÄMIIN KYSYMYKSIIN

2014

Suomi toisena kielenä -alalla on tähän mennessä tutkittu vain vähän sitä, kuinka luku- ja kirjoitustaidottomat tai vähän koulutetut aikuiset oppivat suomea. Tässä artikkelissa tarkastelen neljän luku- ja kirjoitustaidottoman suomenoppijan suullisen kielitaidon kehittymistä. Tutkimuskohteenani ovat osallistujien tuottamat kysyvät lausumat. Olen kerännyt tutkimusaineiston kymmenen kuukautta kestäneen luku- ja kirjoitustaidon koulutuksen aikana. Käytin aineistonkeruussa osallistuvaa havainnointia ja sen pohjalta tehtyjen huomioiden kirjoittamista muistiin sekä oppituntien tallentamista. En sitoudu työssäni tiukasti mihinkään toisen kielen oppimisen teoriaan, sillä ne perustuvat koulutettujen k…

Virhe ei ole kirosana, vai onko? : opettajien käsityksiä virheestä

2023

Meistä monet ehkä muistavat, miten opettaja oli merkinnyt virheet punakynällä kirjoitelmiin ja koepapereihin. Virheiden määrä tavallisesti vaikutti siihen, minkä arvosanan tai pistemäärän suorituksesta sai. Kirjoittamisen ja puhumisen taidoissa virheet ovat tänä päivänäkin usein ratkaisevassa asemassa määriteltäessä oppijan taitoa, vaikka virheisiin keskittymisen sijaan on pyritty siirtämään huomio osaamisen tunnistamiseen. Puhumme arvioinnin ja opetuksen yhteydessä virheistä ja puutteista, mutta mikä virhe oikeastaan on? nonPeerReviewed

Ulkomaalaiset aikuisopiskelijat ja suomen liikeverbien rektiot ja astevaihtelut

1999

Hysteretic Systems Subjected to Delta Correlated Input

1994

The paper deals with the evaluation of the probabilistic response of a single degree of freedom elastic-perfectly plastic system subjected to a delta correlated input process. The probabilistic characterisation of the response is here obtained by considering the accumulated plastic deformations as a compound homogeneous Poisson process independent of the external input. In this case the former can be considered as an external noise acting on the linear system. A closed form solution is also obtained and the analytic expression is compared with the customary Monte-Carlo method.

Stationary and Nontationary Response Probability Density Function of a Beam under Poisson White Noise

2011

In this paper an approximate explicit probability density function for the analysis of external oscillations of a linear and geometric nonlinear simply supported beam driven by random pulses is proposed. The adopted impulsive loading model is the Poisson White Noise , that is a process having Dirac’s delta occurrences with random intensity distributed in time according to Poisson’s law. The response probability density function can be obtained solving the related Kolmogorov-Feller (KF) integro-differential equation. An approximated solution, using path integral method, is derived transforming the KF equation to a first order partial differential equation. The method of characteristic is the…

Phase retrieval of vitreous floaters: simulation experiment

2020

Knowledge of the structure of vitreous floaters is crucial to evaluate the need for surgical removal of these floaters. We simulated the phase retrieval of microstructures simulating vitreous floaters by an algorithm PhaseLift and investigate the effects of various parameters on the retrieved phase. The object under test was modulated and the coded diffraction patterns were calculated. Next, PhaseLift was used to retrieve the phase. In the current study, we simulate the effect of Gaussian and Poison noise on the phase retrieval of pure phase objects. We apply an iterative algorithm PhaseLift for phase retrieval as this algorithm requires a very few modulating masks and is able to retrieve t…

Non Linear Systems Under Complex α-Stable Le´vy White Noise

2003

The problem of predicting the response of linear and nonlinear systems under Levy white noises is examined. A method of analysis is proposed based on the observation that these processes have impulsive character, so that the methods already used for Poisson white noise or normal white noise may be also recast for Levy white noises. Since both the input and output processes have no moments of order two and higher, the response is here evaluated in terms of characteristic function.Copyright © 2003 by ASME

Non-linear systems under parametric alpha-stable LÉVY WHITE NOISES

2005

In this study stochastic analysis of nonlinear dynamical systems under a-stable, multiplicative white noise has been performed. Analysis has been conducted by means of the Ito rule extended to the case of α-stable noises. In this context the order of increments of Levy process has been evaluated and differential equations ruling the evolutions of statistical moments of either parametrically and external dynamical systems have been obtained. The extended Ito rule has also been used to yield the differential equation ruling the evolution of the characteristic function for parametrically excited dynamical systems. The Fourier transform of the characteristic function, namely the probability den…

Application of Periodic Frames to Image Restoration

2014

In this chapter, we present examples of image restoration using periodic frames. Images to be restored were degraded by blurring, aggravated by random noise and random loss of significant number of pixels. The images are transformed by periodic frames designed in Sects. 17.2 and 17.4, which are extended to the 2D setting in a standard tensor product way. In the presented experiments, performances of different tight and semi-tight frames are compared between each other in identical conditions.