Search results for "Statistical"

Exploitation of traffic counting data for traffic study in urban areas: from traffic assignment to simulation model validation

2013

International audience

Time-integrated Neutrino Source Searches with 10 years of IceCube Data

2020

Physical review letters 124(5), 051103 (1-9) (2020). doi:10.1103/PhysRevLett.124.051103

Statistical Adhockeries Are No Criteria for Legal Decisions—The Case of the Expert Medical Report on the Assessment of Urine Specimens Collected Amon…

2019

Identification of local and allochthonous flint artefacts from the Middle Palaeolithical site ‘Abrigo de la Quebrada’ (Chelva, Valencia, Spain) by ma…

2015

This work summarizes the characterization of flint artefacts from the Middle Palaeolithic site ‘Abrigo de la Quebrada’ (Chelva, Valencia, Spain) and flint geological samples collected in the Chelva area. Additionally, some flint artefacts located outside this geographical zone were also analysed and compared with the samples from the Abrigo de la Quebrada site. Flint samples have been studied using methods of macroscopic description and physicochemical analysis [energy dispersive X-ray fluorescence spectrometry (EDXRF) and X-ray diffraction (XRD)]. Multivariate statistical analysis of the EDXRF data and the determination of the crystalline index of quartz, obtained from the XRD patterns, ar…

Global linear feedback control for the generalized Lorenz system

2006

Abstract In this paper we show how the chaotic behavior of the Chen system can be controlled via feedback technique. We design both a nonlinear feedback controller and a linear one which globally regulate the closed-loop system states to a given point. We finally show that our approach works also for the whole family of the generalized Lorenz system.

Les pistes dinosauroïdes du Trias moyen français : interprétation et réévaluation de la nomenclature

2005

Resume De nombreuses traces de pieds dinosauroides, associees parfois avec la main, ont ete recoltees depuis 1960 dans les diverses formations greseuses de la base du Trias de la bordure orientale du Massif Central. Les niveaux a ichnites, dates par les donnees palynologiques, micropaleontologiques et palichnologiques sont compris dans l'intervalle Anisien-Ladinien inferieur. L'interpretation paleontologique de ces empreintes conduit a evoquer des Reptiles bipedes, digitigrades, aux membres posterieurs parasagittaux, ayant des mains pentadactyles et des pieds fontionnellement tridactyles II–IV, dont l'architecture osseuse est celle des Dinosaures Ceratosaures du Trias superieur. Les squelet…

Chemomechanical preparation by hand instrumentation and by Mtwo engine-driven rotary files, an ex vivo study

2011

Objective: To compare the disinfecting efficacy of the sodium hypochlorite irrigation by root canal preparation with stainless steel hand files, taper 0.02 and nickel-titanium Mtwo files with taper 0.04-0.06. Study Design: 40 extracted human teeth were sterilized, and then inoculated with Enterococcus faecalis (ATCC 29212). After 6 day incubation time the root canals were prepared by hand with K-files (n=20) and by engine-driven Mtwo files (VDW, Munich, Germany) (n=20). Irrigation was carried out with 2.5% NaOCl in both cases. Samples were taken and determined in colony forming units (CFU) from the root canals before and after the preparation with instruments #25 and #35. Results: Significa…

Learning-based multiresolution transforms with application to image compression

2013

In Harten's framework, multiresolution transforms are defined by predicting finer resolution levels of information from coarser ones using an operator, called prediction operator, and defining details (or wavelet coefficients) that are the difference between the exact and predicted values. In this paper we use tools of statistical learning in order to design a more accurate prediction operator in this framework based on a training sample, resulting in multiresolution decompositions with enhanced sparsity. In the case of images, we incorporate edge detection techniques in the design of the prediction operator in order to avoid Gibbs phenomenon. Numerical tests are presented showing that the …

贝叶斯因子及其在JASP中的实现

2018

Statistical inference plays a critical role in modern scientific research, however, the dominant method for statistical inference in science, null hypothesis significance testing (NHST), is often misunderstood and misused, which leads to unreproducible findings. To address this issue, researchers propose to adopt the Bayes factor as an alternative to NHST. The Bayes factor is a principled Bayesian tool for model selection and hypothesis testing, and can be interpreted as the strength for both the null hypothesis H0 and the alternative hypothesis H1 based on the current data. Compared to NHST, the Bayes factor has the following advantages: it quantifies the evidence that the data provide for…

Automating statistical diagrammatic representations with data characterization

2017

The search for an efficient method to enhance data cognition is especially important when managing data from multidimensional databases. Open data policies have dramatically increased not only the volume of data available to the public, but also the need to automate the translation of data into efficient graphical representations. Graphic automation involves producing an algorithm that necessarily contains inputs derived from the type of data. A set of rules are then applied to combine the input variables and produce a graphical representation. Automated systems, however, fail to provide an efficient graphical representation because they only consider either a one-dimensional characterizat…