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See detailAverage first-passage time of a quasi-Hamiltonian oscillator with parametric and forcing excitations
Vanvinckenroye, Hélène ULg; Denoël, Vincent ULg

in Journal of Sound and Vibration (in press)

A linear oscillator simultaneously subjected to stochastic forcing and parametric excitation is considered. The time required for this system to evolve from a low initial energy level until a higher ... [more ▼]

A linear oscillator simultaneously subjected to stochastic forcing and parametric excitation is considered. The time required for this system to evolve from a low initial energy level until a higher energy state for the first time is a random variable. Its expectation satisfies the Pontryagin equation of the problem, which is solved with the asymptotic expansion method developed by Khasminskii. This allowed deriving closed-form expressions for the expected first passage time. A comprehensive parameter analysis of these solutions is performed. Beside identifying the important dimensionless groups governing the problem, it also highlights three important regimes which are called incubation, multiplicative and additive because of their specific features. Those three regimes are discussed with the parameters of the problem. [less ▲]

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See detailInlays
Dolce, Rita; Couturaud, Barbara ULg

in Lebeau, M. (Ed.) Associated Regional Chronologies for the Ancient Near East and the Eastern Mediterranean (in press)

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See detailReconciling Plato’s and Aristotle’s Cosmologies. Attemps at Harmonization in Simplicius
Gavray, Marc-Antoine ULg

in Strobel, Benedikt (Ed.) Die Kunst der philosophischen Exegese bei den antiken Platon- und Aristoteles Kommentatoren (in press)

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See detailLife as Music in Deleuze and von Uexküll (En préparation)
Pieron, Julien ULg

in Wolfe, Charles (Ed.) Forms of Vitalism (in press)

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See detailLes Lumières de la ville : cinéma des premiers temps et espace urbain
Servais, Christine ULg

in Durand, Pascal; Servais, Christine (Eds.) L'intervention du support. Médiation esthétique et énonciation éditoriale (in press)

Cet article propose une analyse du cinéma des premiers temps comme dispositif de médiation. A partir de l'analyse du corpus des films Lumière portant explicitement sur la ville, et en distinguant les vues ... [more ▼]

Cet article propose une analyse du cinéma des premiers temps comme dispositif de médiation. A partir de l'analyse du corpus des films Lumière portant explicitement sur la ville, et en distinguant les vues "de" la ville des vues "sur" la ville, l'auteur conduit une analyse de la manière dont le cinéma des premiers temps a représenté la ville et de la relation à l'espace public que, ce faisant, il proposait à ses spectateurs. [less ▲]

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See detailSpatiotemporal variation of drought characteristics in the context of climate change in the Huang-Huai-Hai Plain, China
Li, Xiang-Xiang; Ju, Hui; Garré, Sarah ULg et al

in Journal of Integrative Agriculture (in press)

Understanding the potential drought characteristics under climate change is essential for reducing vulnerability and establishing adaptation strategies, especially in the Huang-Huai-Hai Plain (3H Plain ... [more ▼]

Understanding the potential drought characteristics under climate change is essential for reducing vulnerability and establishing adaptation strategies, especially in the Huang-Huai-Hai Plain (3H Plain) which is the grain production base in China. In this paper, the variation of drought characteristics including drought event frequency, duration, severity and intensity for the past 50 years (1961-2010) and future scenarios (2010-2099) based on observed meteorological data and RCP 8.5 projections were investigated, respectively. Firstly, the applicability of three climatic drought indices including the Standardized Precipitation Index (SPI), the Standardized Precipitation Evapotranspiration Index based on the Penman–Monteith equation (SPEI-PM) and the Thornthwaite equation (SPEI-TH) were compared in tracing recorded agricultural drought areas. Then, the drought characteristics including drought event, duration, severity and intensity using “run theory” was analyzed for both historical observations and future RCP 8.5 scenarios based on the proper index. Correlation analysis between drought indexes and agricultural drought areas showed that SPEI-PM performed better than SPI and SPEI-TH in the 3H Plain. Based on the results of SPEI-PM, droughts over the past 50 years have experienced reduced drought with shorter durations, and weaker severity and intensity. However, for the future RCP 8.5 scenario, drought is predicted to rise in frequency, duration, severity and intensity from 2010-2099 although drought components during the 2010-2039 were milder compared to historical conditions. This study highlights that the estimations for atmospheric evaporative demand would bring in differences in long term drought trend of drought indexes and consequently the applicability in 3H Plain. The results of this paper can help inform researchers and local policy makers to establish drought risk management strategies. [less ▲]

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See detailLocal Control of AC/DC Converters for Frequency Support Between Asynchronous AC Areas
Papangelis, Lampros ULg; Debry, Marie-Sophie; Panciatici, Patrick et al

in IEEE PES 2017 PowerTech conference proceedings (in press)

This paper proposes a novel control scheme for frequency support among asynchronous AC areas through HVDC grids. It is based on local controllers, each acting on a voltage source converter, using locally ... [more ▼]

This paper proposes a novel control scheme for frequency support among asynchronous AC areas through HVDC grids. It is based on local controllers, each acting on a voltage source converter, using locally available measurements only, and supporting frequency of the adjacent AC area after a significant disturbance. The controller is combined with the existing DC voltage droop technique and is inspired of Model Predictive Control, taking into account various constraints. The coordination of the proposed control scheme with the existing secondary frequency control of an AC area is also discussed. Examples obtained from a test system with a five-terminal DC network connecting two asynchronous areas demonstrate the effectiveness of the proposed control scheme. [less ▲]

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See detailCarte géologique de Wallonie (Belgique) 1/10.000. 59/3 Rochefort
Barchy, Laurent; Dejonghe, Léon; Marion, Jean-Marc ULg

Cartographic material (in press)

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data, produced since the previous edition published in 1900 (Stainier)

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See detailP.Leod. inv. 2: fragment d'un document relatif à un bien immobilier (?)
Ricciardetto, Antonio ULg

in Davoli, Paola; Pellé, Natascia (Eds.) Polymatheia. Studi offerti a Mario Capasso (in press)

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See detailHabiter le trouble, avec Donna Haraway
Pieron, Julien ULg; Caeymaex, Florence ULg; Despret, Vinciane ULg

Book published by Editions Dehors (in press)

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See detailThe Sense of Taste in Eighteenth-Century France. Flavours of Silence and Words of Perception
Von Hoffmann, Viktoria ULg

in De achttiende eeuw : Documentatieblad van de Werkgroep Achttiende Eeuw (in press), 48(1-2), 13-27

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See detailP.Tebt. 526v: A Land Registry from Tebtunis
Nocchi Macedo, Gabriel ULg; Gilbert, Nathan

in Bulletin of the American Society of Papyrologists (in press)

Edition of a Greek land registry from Tebtunis

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See detailBetween Atlantic and Mediterranean: Changes in technology during the Late Glacial in Western Europe and the climate hypothesis
Naudinot, Nicolas; Tomasso, Antonin ULg; Messager, Erwann et al

in Quaternary International (in press)

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See detailUne vaste implantation épigravettienne dans la vallée du Gallero
Olive, Monique; Le Jeune, Yann; Tomasso, Antonin ULg et al

in Olive, Monique (Ed.) Campo delle Piane : un habitat de plein air épigravettien dans la Vallée du Gallero (Abruzzes, Italie centrale) (in press)

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See detailPourquoi l'écriture importe
Pieron, Julien ULg

in Caeymaex, Florence; Despret, Vinciane; Pieron, Julien (Eds.) Habiter le trouble, avec Donna Haraway (in press)

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See detailCarte géologique de Wallonie. Huy-Nandrin n°48/3-4
Mottequin, Bernard; Marion, Jean-Marc ULg

Cartographic material (in press)

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the first edition by Gustave Dewalque & colleagues (1898 ... [more ▼]

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the first edition by Gustave Dewalque & colleagues (1898) published at the scale of 1/40.000 [less ▲]

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See detailImproving pedestrian detection using motion-guided filtering
Wang, Yi; Pierard, Sébastien ULg; Su, Song-Zhi et al

in Pattern Recognition Letters (in press)

In this letter, we show how a simple motion-guided nonlinear filter can drastically improve the accuracy of several pedestrian detectors. More specifically, we address the problem of how to pre-filter an ... [more ▼]

In this letter, we show how a simple motion-guided nonlinear filter can drastically improve the accuracy of several pedestrian detectors. More specifically, we address the problem of how to pre-filter an image so almost any pedestrian detector will see its false detection rate decrease. First, we roughly identify moving pixels by cumulating their temporal gradient into a motion history image (MHI). The MHI is then used in conjunction with a nonlinear filter to filter out background details while leaving untouched foreground moving objects. We also show how a feedback loop as well as a merging procedure between the filtered and the unfiltered frames can further improve results. We tested our method on 26 videos from 6 categories. The results show that for a given miss rate, filtering out background details reduces the false detection rate by a factor of up to 69.6 times. Our method is simple, computationally light, and can be implemented with any pedestrian detector. Code is made publicly available at: https://bitbucket.org/wany1601/pedestriandetection. [less ▲]

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See detailMarty, Husserl, and the (psycho)logical a priori
Seron, Denis ULg

in Fréchette, Guillaume; Taieb, Hamid (Eds.) Meaning and Intentionality in Anton Marty: Debates and Influences (in press)

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