Search results for " Methods"

Anza palaeoichnological site, Late Cretaceous, Morocco. Part III: Comparison between traditional and photogrammetric records

2020

11 pages; International audience; The present study evaluates a methodological workflow that could identify dinosaur tracks and trackways more comprehensively at outcrop scale. The approach described here is based both on 3D modelling by photogrammetry at different resolutions, and on suitably processed digital elevation models (DEMs). The ichnosite of Anza, Morocco, was chosen to demonstrate the efficiency of the proposed pipeline, because 323 dinosaur and pterosaur tracks discovered there have already been published. One subsector containing 89 tracks, identified in the two companion works that followed a traditional approach, was selected and divided into four subzones. By combining diff…

Mesure et analyse de l'égalité et de l'équité en éducation

1988

Analysing and measuring equity in the education system has been the bread and butter of large number of sociological pieces of research. They are often based on the computation of selectivity indices (according to SES sex...) at given level of education higher education for example. The paper shows that these measures ignore the scarcity of resources existing in the education system. More precisely they ignore the structural dimension of the overall school organization allocation of resources between levels on the one hand quality choices at each level on the other which constitutes the shell itself more or less equalitarian within which are nested the various types of selectivity as they a…

Matrices de pondérations et contexte spatio-temporel en économétrie spatiale

2013

International audience

Geometric optimal control : homotopic methods and applications

2012

This work is about geometric optimal control applied to celestial and quantum mechanics. We first dealt with the minimum fuel consumption problem of transfering a satellite around the Earth. This brought to the creation of the code HamPath which permits first of all to solve optimal control problem for which the command law is smooth. It is based on the Pontryagin Maximum Principle (PMP) and on the notion of conjugate point. This program combines shooting method, differential homotopic methods and tools to compute second order optimality conditions. Then we are interested in quantum control. We study first a system which consists in two different particles of spin 1/2 having two different r…

Ab-Initio Calculations of Oxygen Vacancy in Ga2O3 Crystals

2021

The research has been funded by the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (Grant No. AP08856540). J. Purans and A.I.Popov acknowledge the ERAF project 1.1.1.1/20/A/057 “Functional Ultrawide Bandgap Gallium Oxide and Zinc Gallate Thin Films and Novel Deposition Technologies”. The Institute of Solid State Physics, University of Latvia (Latvia) as the Centre of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD01-2016-2017-Teaming Phase2 under grant agreement No. 739508, project CAMART2.

Searches for anisotropies in the arrival directions of the highest energy cosmic rays detected by the Pierre Auger Observatory

2015

We analyze the distribution of arrival directions of ultra-high energy cosmic rays recorded at the Pierre Auger Observatory in 10 years of operation. The data set, about three times larger than that used in earlier studies, includes arrival directions with zenith angles up to $80^\circ$, thus covering from $-90^\circ$ to $+45^\circ$ in declination. After updating the fraction of events correlating with the active galactic nuclei (AGNs) in the V��ron-Cetty and V��ron catalog, we subject the arrival directions of the data with energies in excess of 40 EeV to different tests for anisotropy. We search for localized excess fluxes and for self-clustering of event directions at angular scales up t…

Acceleration of the AChBP conformational transition using Temperarure Accelerated Molecular Dynamics

2013

Geostatistical computing of acoustic maps in the presence of barriers

2009

Acoustic maps are the main diagnostic tools used by authorities for addressing the growing problem of urban acoustic contamination. Geostatistics models phenomena with spatial variation, but restricted to homogeneous prediction regions. The presence of barriers such as buildings introduces discontinuities in prediction areas. In this paper we investigate how to incorporate information of a geographical nature into the process of geostatistical prediction. In addition, we study the use of a Cost-Based distance to quantify the correlation between locations.

Finanšu terminoloģijas mācīšana pieaugušajiem

2016

Bakalaura darbā tiek pētīti līdzekļi finanšu terminoloģijas mācīšanai. Teorētiskajā daļā apskatītas terminoloģijas un leksikas galvenās īpašības, mācīšanas metodes un aktivitātes, analizēts finanšu diskurss. Empīriskās daļas mērķis ir noskaidrot, kuras metodes un aktivitātes ir piemērotas finanšu terminoloģijas mācīšanai pieaugušajiem. Pētījuma dati tika iegūti analizējot novērojumus un studentu progresu. Iegūtie dati liecina, ka pieaugušie var mācīties finanšu terminoloģiju, izmantojot arī tradicionālās mācīšanas metodes, taču saskaņā ar studentu sniegto informāciju, inovatīvas mācību metodes un aktivitātes ir noderīgākas un patīkamākas. Iegūtos rezultātus var izmantot finanšu terminoloģij…

Statistical methods for adaptive river basin management and monitoring

2018

Decision-making at different phases of adaptive river basin management planning rely largely on the information that is gained through environmental monitoring. The aim of this thesis was to develop and test statistical assessment tools presumed to be particularly useful for evaluating existing monitoring designs, converting monitoring data into management information and quantifying uncertainties. River basin scale monitoring was performed using a wireless sensor network and a data quality control system and maintenance effort was assessed. National-scale, traditional monitoring data and linear mixed effect modelling were used to estimate the uncertainty in two status class metrics (total …