Search results for "methods [Diffusion Tensor Imaging]"
showing 10 items of 992 documents
An harmonic test condition for the metrological characterization and the operating principle identification of reactive static meters
2008
This paper faces the problem of the metrological characterization of the static meters for reactive energy in the presence of harmonic distortion. Starting from the only available accuracy test condition in the presence of harmonics introduced in the Standards for active static meters, an experimental approach is proposed for the verification of such meters in the presence of harmonic distortion, as well as for the individuation of their operating principle. A theoretical validation of the obtained results is presented by means of a comparison with a standard and a commercial static meter with a known operating principle.
A Multi-Position Calibration Method for Consumer-Grade Accelerometers, Gyroscopes, and Magnetometers to Field Conditions
2017
This paper presents a calibration method for consumer-grade accelerometers, gyroscopes, and magnetometers. Considering the calibration of consumer-grade sensors, it is essential that no specialized equipment is required to create reference signals. In addition, the less is required from the reference signals, the more suitable the method is on the field. In the proposed method, the novelty in the calibration of the gyroscopes lies in the exploitation of only the known net rotations between the positions in a multi-position calibration. For accelerometers and magnetometers, the innovation is that the direction of reference signals, the gravity and the magnetic field of the Earth, are estimat…
VISUALIZATION IN ASTRONOMY AT GENERAL SCHOOL
2009
This is an International Year of Astronomy (IYA 2009) when we pay great attention to astronomy education. The International Year of Astronomy is a year-long celebration of astronomy, taking place in 2009 to coincide with the 400th anniversary of the first recorded astronomical observations with a telescope by Galileo Galilei. Author presents a modern approach to teaching astronomy and planetary sciences, centered on visual images and simulations of planetary objects. The basic idea is to take the students to other celestial objects as tourists, and to teach science through the observations of various natural phenomena in these new environments. The power of scientific visualization, through…
Two Half-Truths Make a Whole? On Bias in Self-Reports and Tracking Data
2019
The pervasive use of mobile information technologies brings new patterns of media usage, but also challenges to the measurement of media exposure. Researchers wishing to, for example, understand the nature of selective exposure on algorithmically driven platforms need to precisely attribute individuals’ exposure to specific content. Prior research has used tracking data to show that survey-based self-reports of media exposure are critically unreliable. So far, however, little effort has been invested into assessing the specific biases of tracking methods themselves. Using data from a multimethod study, we show that tracking data from mobile devices is linked to systematic distortions in sel…
Bibliometric analysis through methodological quality indicators of Spanish education journals indexed in JCR during the three year period 2014-2016
2019
This study carries out a bibliometric evaluation through methodological quality indicators of the scientific production published during the triennium of 2014 to 2016 in the seven Spanish journals of education indexed in the Journal Citation Reports (JCR): Revista de Psicodidáctica; Comunicar; Revista de Educación; Educación XX1; Enseñanza de las Ciencias, Revista Española de Pedagogía; y Porta Linguarum. Through a bibliometric-descriptive methodology, a sample of articles that totals 479 and selected through a non-probabilistic sampling of deliberate type. Overall, the results obtained indicate that the journals evaluated have achieved levels of compliance with the proposed methodological …
The Large Observatory for X-ray Timing (LOFT)
2012
High-time-resolution X-ray observations of compact objects provide direct access to strong-field gravity, to the equation of state of ultra-dense matter and to black hole masses and spins. A 10 m^2-class instrument in combination with good spectral resolution is required to exploit the relevant diagnostics and answer two of the fundamental questions of the European Space Agency (ESA) Cosmic Vision Theme "Matter under extreme conditions", namely: does matter orbiting close to the event horizon follow the predictions of general relativity? What is the equation of state of matter in neutron stars? The Large Observatory For X-ray Timing (LOFT), selected by ESA as one of the four Cosmic Vision M…
TO BE PSYCHOLOGISTS OR TO BECOME A PSYCHOLOGIST? A STUDY ON UTILITY AND EFFECTIVENESS OF AN EXPERIENTIAL LEARNING GROUP ACTIVITY IN ACADEMIC COURSES.
2015
1 INTRODUCTION Professors of Psychology well know that the most of their students start attending academic courses intending Psychology, and psychological work too, in a not much realistic and strongly idealizing way. This happens, on the one hand, due to an unsatisfactory knowledge of the subject, on the other hand because of a marked discrepancy between the representation/image of the psychologist as presented by media and the one which is shared by the scientific and professional community. According to the representation given by media, for example, anyone in possession of strong empathic and interpretational skills – to be simply strengthened through academic studies – may pursue the c…
Construction et évaluation d’un modèle de simulation dans un contexte interdisciplinaire
2015
Le travail présenté ici s’inscrit dans le cadre de l’ANR TransMonDyn, qui vise à étudier les transformations dans les systèmes de peuplement sur le temps long, au moyen de modèles conceptuels ou implémentés sous forme informatique. Cette étude s’appuie sur un formalisme, développé au sein du projet, définissant la transformation comme une transition entre un régime 1 et un régime 2. Le projet TransMonDyn repose sur l’analyse d’un ensemble de douze cas d’études empiriques, les transitions, dont les localisations autant que les échelles spatiales et temporelles sont extrêmement diverses.
Light-component spectrum of the primary cosmic rays in the multi-TeV region measured by the ARGO-YBJ experiment
2012
The ARGO-YBJ experiment detects extensive air showers in a wide energy range by means of a full-coverage detector which is in stable data taking in its full configuration since November 2007 at the YBJ International Cosmic Ray Observatory (4300 m a.s.l., Tibet, People's Republic of China). In this paper the measurement of the light-component spectrum of primary cosmic rays in the energy region $(5\textdiv{}200)\text{ }\text{ }\mathrm{TeV}$ is reported. The method exploited to analyze the experimental data is based on a Bayesian procedure. The measured intensities of the light component are consistent with the recent CREAM results and higher than that obtained adding the proton and helium sp…
Probing the physics of the solar atmosphere with the Multi-slit Solar Explorer (MUSE): I. Coronal Heating
2022
The Multi-slit Solar Explorer (MUSE) is a proposed NASA MIDEX mission, currently in Phase A, composed of a multi-slit EUV spectrograph (in three narrow spectral bands centered around 171A, 284A, and 108A) and an EUV context imager (in two narrow passbands around 195A and 304A). MUSE will provide unprecedented spectral and imaging diagnostics of the solar corona at high spatial (<0.5 arcsec), and temporal resolution (down to ~0.5s) thanks to its innovative multi-slit design. By obtaining spectra in 4 bright EUV lines (Fe IX 171A , Fe XV 284A, Fe XIX-Fe XXI 108A) covering a wide range of transition region and coronal temperatures along 37 slits simultaneously, MUSE will for the first time …