Search results for "Method"
showing 10 items of 13253 documents
The Industrial Applicability of PEA Space Charge Measurements, for Performance Optimization of HVDC Power Cables
2019
Cable manufacturing industries are constantly trying to improve the electrical performance of power cables. During the years, it was found that one of the most relevant degradation factors influencing the cable lifetime is the presence of space charge in the insulation layer. To detect the accumulated charge, the pulsed electro-acoustic (PEA) method is the most used technique. Despite the wide use of the PEA cell, several issues are still present. In particular, the PEA output signal is strongly disturbed by the acoustic waves reflections within the PEA cell. This causes the distortion of the output signal and therefore the misinterpretation of the charge profiles. This, in turn, may result…
Continuum: A spatiotemporal data model to represent and qualify filiation relationships
2013
International audience; This work introduces an ontology-based spatio-temporal data model to represent entities evolving in space and time. A dynamic phenomenon generates a complex relationship network between the entities involved in the process. At the abstract level, the relationships can be identity or topological filiations. The existence of an identity filiation depends on whether the object changes its identity or not. On the other hand, topological filiations are based exclusively on the spatial component, like in the case of growth, reduction, merging or splitting. When combining identity and topological filiations, six filiation relationships are obtained, forming a second abstrac…
La modélisation de l'information spatio-temporelle
2012
Understanding Urban Fabric with the OH_FET model based on Social Use, Space and Time
2008
The proposed principle for understanding the urban fabric is based on considering the town as a set of complex objects, taking a systemic approach. The town system used to study the urban fabric over large time spans is composed of three sub-systems relating to historical objects from the level of the excavation to that of the former urban space: function (social use), space (location, surface area and morphology) and time (dating, duration and chronology). The historical object is the analytical unit of the space studied. It is the Cartesian product of the three sets, Social use, Space and Time, from which it stems. On the basis of this process, the Historical Object (OH) is broken down in…
Spatial simulation and the real world
2015
Methods for territorial intelligence
2006
Quantitative methods which are used by social sciences for thirty years can provide tools to help territorial actors better managing their territories. This short paper outlines an inventory of the kinds of methods that are usable within this framework.
Joint second-order parameter estimation for spatio-temporal log-Gaussian Cox processes
2018
We propose a new fitting method to estimate the set of second-order parameters for the class of homogeneous spatio-temporal log-Gaussian Cox point processes. With simulations, we show that the proposed minimum contrast procedure, based on the spatio-temporal pair correlation function, provides reliable estimates and we compare the results with the current available methods. Moreover, the proposed method can be used in the case of both separable and non-separable parametric specifications of the correlation function of the underlying Gaussian Random Field. We describe earthquake sequences comparing several Cox model specifications.
Stāstu izmantošana runāšanas prasmju attīstīšanā
2015
Bakalaura darba tēma ir “Stāstu izmantošana runāšanas prasmju attīstīšanā” Darbs veltīts mācīšanas metodēm un aktivitātēm, kas ar stāstījumu palīdzību veicina runāšanas prasmju attīstību. Pētījuma mērķis ir noskaidrot, vai skolēni ar stāstījumu palīdzību var attīstīt savas runāšanas prasmes. Bakalaura darbs sastāv no divām daļām. Pirmā daļa veltīta teorijas diskusijai, kas sastāv no trim nodaļām. Pirmā nodaļa veltīta diskusijai par valodas attīstību, tās apguvi, kā arī metodēm un veidiem, kā iespējams mācīt valodu skolēniem. Otrā nodaļa attiecas uz runāšanas prasmēm, to mācīšanas un novērtēšanas teoriju izpēti. Savukārt trešā nodaļa veltīta stāstu un stāstījumu izmantošanai angļu valodas kā…
Periodismo especializado y especialización política
2015
En este artículo se revisa la bibliografía sobre periodismo especializado y se analizan los rasgos normalmente aducidos para identificar la especialización periodística, que apuntan por lo general al contenido de los textos: la especificidad temática, el enfoque en profundidad, la metodología de investigación, el recurso a fuentes expertas, la necesidad de formación complementaria a la pro-piamente periodística, la orientación a audiencias segmentadas, el uso de géneros textuales con-cretos, o la adecuación lingüística. La aplicación de estos mismos factores a la especialización políti-ca pone de manifiesto la necesidad de cuestionar los rasgos aducidos y considerar otros criterios en el co…
The Gaia-ESO Public Spectroscopic Survey
2012
The Gaia-ESO Public Spectroscopic Survey has begun and will obtain high quality spectroscopy of some 100000 Milky Way stars, in the field and in open clusters, down to magnitude 19, systematically covering all the major components of the Milky Way. This survey will provide the first homogeneous overview of the distributions of kinematics and chemical element abundances in the Galaxy. The motivation, organisation and implementation of the Gaia-ESO Survey are described, emphasising the complementarity with the ESA Gaia mission. Spectra from the very first observing run of the survey are presented.