Search results for " Experimental"
showing 10 items of 3530 documents
Cross-Frequency Coupling in Developmental Perspective
2019
It is generally assumed that different electroencephalogram (EEG) frequency bands are somehow related to different computational modes in the brain. Integration of these computational modes is reflected in the phenomenon of cross-frequency coupling (CFC). On slow temporal scales, CFC may reflect trait-like properties, which posits a question of its developmental trends. This is the first study that explored source-level CFC measures in a developmental perspective using both cross-sectional and longitudinal designs. CFC measures demonstrated good test-retest stability and proved to be higher in adults in cortical areas participating in sensory-motor integration, response inhibition, and atte…
Infection success of Echinoparyphium aconiatum (Trematoda) in its snail host under high temperature: role of host resistance
2014
Background Extreme weather events such as summer heat waves become more frequent owing to global climate change and are predicted to alter disease dynamics. This is because high temperatures can reduce host immune function. Predicting the impact of climate change on host-parasite interactions is, however, difficult as temperature may also affect parasite infective stages and other host characteristics determining the outcome of interaction. Methods Two experiments were conducted to investigate these phenomena in a Lymnaea stagnalis–Echinoparyphium aconiatum (Trematoda) interaction. In the first experiment, the effects of exposure of snails to experimental heat waves [maintenance at 25°C vs.…
First measurement of the |t|-dependence of coherent J/ψ photonuclear production
2021
The first measurement of the dependence on $|t|$, the square of the momentum transferred between the incoming and outgoing target nucleus, of coherent J/ψ photoproduction is presented. The data were measured with the ALICE detector in ultra-peripheral Pb-Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}} = 5.02$ TeV with the J/$\psi$ produced in the central rapidity region $|y| < 0.8$, which corresponds to the small Bjorken-$x$ range $(0.3 − 1.4) \times 10 ^{−3}$. The measured $|t|$-dependence is not described by computations based only on the Pb nuclear form factor, while the photonuclear cross section is better reproduced by models including shadowing according t…
Review of Particle Physics
2020
The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,143 new measurements from 709 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, …
Narrative inquiry and historical skills. A study in teacher training
2017
This paper addresses narrative thinking and literacy levels in future primary school teachers in Spain. It uses the study of a historical synthesis of one of the main narratives in Spanish history: the Christian expansion through Muslim territories in the Iberian Peninsula in the Middle Ages. Accounts by 283 students of the degree in elementary school teaching at the universities of Valencia and Murcia were studied. The aim was to ascertain the students' discursive abilities with respect to their historical thinking skills. The results reveal poor narrative skills in future teachers and a very low level of historical literacy.
Detection of charged kaons using the decay topology in ALICE TPC
2006
Silicon Strip Detectors for the ATLAS End-Cap Tracker at the HL-LHC
2017
El LHC se ha convertido en el acelerador más potente de todos los tiempos. Su principal objetivo es dar respuesta a las limitaciones del Modelo Estándar y revelar la física más allá de él. El descubrimiento del bosón de Higgs en 2012 supuso el comienzo de una era en el campo de la física de partículas donde conseguir la mayor precisión posible en las medidas es vital. En el LHC se aceleran y colisionan protones con una energía nominal de centro de masas de 14 TeV y una luminosidad instantánea nominal de 10^34 cm−2 s−1. Para la máxima luminosidad, los protones son acelerados en paquetes de 1.15 ×10^11 protones cada uno, con una frecuencia de 40 MHz (esto supone una colisión cada 25 ns). Esta…
Longitudinal profiles of mental well-being as correlates of successful aging in middle age
2017
This study analyzed the multidimensional (including emotional, psychological, and social well-being) profiles of mental well-being and their links to various indicators of successful aging (SA; including diseases, cognitive and physical function, and engagement with life). The analyses were based on the Finnish Jyväskylä Longitudinal Study of Personality and Social Development, where the age-cohort participants have been followed from age 8 to 50. Data on 335 participants collected in mid-adulthood were analyzed. Applying Latent Profile Analysis and measures of life satisfaction and psychological well-being at ages 36, 42, and 50 and social well-being at ages 42 and 50, four longitudinal w…
Aesthetic Appeal and Visual Usability in Four Icon Design Eras
2016
Technological artefacts express time periods in their visual design. Due time, visual culture changes and thus affects the design of pictorial representations in technological products, such as icons in user interfaces. Previous research of temporal aspects in human-computer interaction has been focusing on particular interaction situations, but not on the effects of design eras on user experience. The influence of icon design styles of different eras on aesthetic and usability experiences was studied with the method of primed product comparisons. Affective preferences and their processing times were analysed in order to examine visual usability in terms of semantic distance and aesthetic a…
Meaning in life in cancer patients: relationships with illness perception and global meaning changes
2017
BackgroundMeaning in life seems to play an important role at various stages of coping in cancer patients. It can influence the ways in which cancer patients perceive their illness and potential changes in beliefs and goals. The main aim of the current study is to examine how two dimensions – presence of and search for meaning – are related to illness perception and global meaning changes.Participants and procedureThe research was conducted among 231 cancer patients (136 women and 95 men), between 27 and 86 years of age (M = 56.73, SD = 12.64). They were diagnosed with gastrointestinal cancer (stomach, colon, pancreas, liver, large intestine). The following research methods were used: the Me…