Search results for "Motion"

Domain wall motion in a diffusive weak ferromagnet

2019

We study the domain wall motion in a disordered weak ferromagnet, induced by injecting a spin current from a strong ferromagnet. Starting from the spin diffusion equation describing the spin accumulation in the weak ferromagnet, we calculate the force and torque acting on the domain wall. We also study the ensuing domain wall dynamics, and suggest a possible measurement method for detecting the domain wall motion via measuring the additional resistance.

Thermodiffusion motion of electrically charged nanoparticles

2012

AbstractThe present work deals with experimental studies to examine the theoretical model of thermodiffusion of electrically charged nanoparticles. Three different ionic magnetic colloid samples have been synthesized and profoundly analyzed. The theoretical model is a classical one, based on the calculation of the temperature and the electric potential distribution around nanoparticles. The discrepancy between experimental data and theory turns out not to exceed 20%. We focus on applying different approximations between calculated electrical double layer in the theoretical model and experimental determination of the surface charge density of colloidal particles. We assume this is the main r…

Automatic Processing of Changes in Facial Emotions in Dysphoria: A Magnetoencephalography Study

2018

It is not known to what extent the automatic encoding and change detection of peripherally presented facial emotion is altered in dysphoria. The negative bias in automatic face processing in particular has rarely been studied. We used magnetoencephalography (MEG) to record automatic brain responses to happy and sad faces in dysphoric (Beck’s Depression Inventory ≥ 13) and control participants. Stimuli were presented in a passive oddball condition, which allowed potential negative bias in dysphoria at different stages of face processing (M100, M170, and M300) and alterations of change detection (visual mismatch negativity, vMMN) to be investigated. The magnetic counterpart of the vMMN was el…

Brain Functional Effects of Psychopharmacological Treatment in Major Depression: A Focus on Neural Circuitry of Affective Processing

2015

In the last two decades, neuroimaging research has reached a much deeper understanding of the neurobiological underpinnings of major depression (MD) and has converged on functional alterations in limbic and prefrontal neural networks, which are mainly linked to altered emotional processing observed in MD patients. To date, a considerable number of studies have sought to investigate how these neural networks change with pharmacological antidepressant treatment. In the current review, we therefore discuss results from a) pharmacological functional magnetic resonance imaging (fMRI) studies investigating the effects of selective serotonin or noradrenalin reuptake inhibitors on neural activation…

Bayesian semiparametric long memory models for discretized event data

2020

We introduce a new class of semiparametric latent variable models for long memory discretized event data. The proposed methodology is motivated by a study of bird vocalizations in the Amazon rain forest; the timings of vocalizations exhibit self-similarity and long range dependence. This rules out Poisson process based models where the rate function itself is not long range dependent. The proposed class of FRActional Probit (FRAP) models is based on thresholding, a latent process. This latent process is modeled by a smooth Gaussian process and a fractional Brownian motion by assuming an additive structure. We develop a Bayesian approach to inference using Markov chain Monte Carlo and show g…

Music mood annotation using semantic computing and machine learning

2015

EUROPEAN MANAGERIAL PROFESSION AND BEHAVIOR

2009

The European manager‘s behavior must be flexible and adaptable to the behaviors of various employees of the enterprise. Its flexibility enables the manager to act efficiently in the current, so mobile environment

Do opposite ends of same factors underlie life satisfaction vs. depressive symptoms among older people?

2021

Abstract Background Although depressive symptoms are more common among older than younger age groups, life satisfaction tends to remain stable over the life course, possibly because the underlying factors or processes differ. Aim To study whether the factors that increase the likelihood of high life satisfaction also decrease the likelihood of depressive symptoms among older people. Methods The data were a population-based probability sample drawn from community-dwelling people aged 75, 80, and 85 years (n = 1021). Participants’ life satisfaction was measured with the Satisfaction with Life Scale and depressive symptoms with the Centre for Epidemiologic Studies Depression Scale (CES-D). Phy…

Depressive symptoms, sense of coherence, physical activity and genetic factors among older people

2012

Kliinisen improvisaation käynnistämä emotionaalinen prosessointi musiikkiterapiassa masennuksen hoidossa

2011

Tutkimus perehtyy musiikkiterapian kliinisen improvisaation (vapaan soittoimprovisaation) käynnistämään emotionaaliseen prosessointiin masennuksen hoidossa. Se keskittyy tarkastelemaan terapian improvisaation jälkeistä aikaa, selvittäen improvisaation ja sen kuuntelun yhteyttä emotionaaliseen prosessointiin ja hoidon tuloksiin. Tutkimus kuvaa fenomenologisella lähestymistavalla aineistosta nousevia ilmiöitä, joihin liittyviä käsitteitä on haettu analyysin tueksi teoriasta. Tutkimus on laadullinen, vaikka sen tulokset rakentuvat osin myös määrällisesti koodatusta aineistosta. Tutkimusaineisto koostuu Jyväskylän yliopistossa vuonna 2006 käynnistyneen Tuning the Brain for Music -tutkimusprojek…