The article considers the method of non-destructive testing for structural condition monitoring of a mechanical system in normal operating modes and detection of defects with use of Fourier and wavelet analysis of vibration signal. / В статье рассматривается метод неразрушающего контроля состояния конструкции механической системы в нормальных режим...
After an introduction to the traditional flood frequency analysis methods, this article discusses their limits and the risks associated with their thoughtless use: overconfidence in the estimated values of flood quantiles or return periods and systematic underestimation of risks. The article then presents and illustrates the added value of modern B...
In this paper, we propose a frequency domain analysis for characterizing the walking gait in the context of indoor navigation, without assuming that the sensors are rigidly attached to the body. Firstly, frequency analysis is performed using Short Time Fourier Transform (STFT) since the statistical properties of the signal are changing over time bu...
An abundance of methods have been developed over the years to perform the frequency analysis (FA) of extreme environmental variables. Although numerous comparisons between these methods have been implemented, no general comparison framework has been agreed upon so far. The objective of this paper is to build the foundation of a data-based compariso...
The increasing availability of Very High Spatial Resolution images enables accurate digital maps production as an aid for management in the agricultural domain. In this study, we develop a comprehensive and automatic tool for vineyard detection, delineation and characterization using aerial images and without any parcel plan availability. In France...
The availability of an automatic tool for vine plot detection, delineation and characterization would be very useful for management purposes. An automatic and recursive process using frequency analysis (with Fourier Transform and Gabor filters) has been developed to meet this need. This results in the determination of vine plot boundaries determina...
Published in Stochastic Environmental Research and Risk Assessment
Statistical analysis of extremes currently assumes that data arise from a stationary process, although such an hypothesis is not easily assessable and should therefore be considered as an uncertainty. The aim of this paper is to describe a Bayesian framework for this purpose, considering several probabilistic models (stationary, step-change and lin...
Vine-plot mapping and monitoring are crucial issues in land management, particularly for areas where vineyards are dominant, like in some French regions. In this context, the availability of an automatic tool for vineyard detection and characterization would be very useful. Due to the periodic patterns induced by this culture, frequency analysis ap...
The kinetics and thermodynamics of formation of chloromagnesium cements, which involves magnesium oxide, the main component of metallurgical sludge produced in manufacture of magnesium, were studied. The rate constants, activation energy, frequency factor, and thermodynamic constants of the reactions in which crystalline hydrates of composition 3Mg...
The work presented in this report is based on two design standards, which follow an international design philosophy. Eurocode 8 Part 4 - Tanks, Silos and Pipelines, and API Standard 650 - Seismic Design of Storage Tanks. Both are mainly based on the work of Haroun-Housner and Veletsos. Basic assumption is that under seismic excitation liquid contai...
