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See detailPREDetector 2.0: Online and Enhanced Version of the Prokaryotic Regulatory Elements Detector Tool
Tocquin, Pierre ULg; Naomé, Aymeric ULg; Jourdan, Samuel ULg et al

E-print/Working paper (2016)

In the era that huge numbers of microbial genomes are being released in the databases, it becomes increasingly important to rapidly mine genes as well as predict the regulatory networks that control their ... [more ▼]

In the era that huge numbers of microbial genomes are being released in the databases, it becomes increasingly important to rapidly mine genes as well as predict the regulatory networks that control their expression. To this end, we have developed an improved and online version of the PREDetector software aimed at identifying putative transcription factor-binding sites (TFBS) in bacterial genomes. The original philosophy of PREDetector 1.0 is maintained, i.e. to allow users to freely fix the DNA-motif screening parameters, and to provide a statistical means to estimate the reliability of the prediction output. This new version offers an interactive table as well as graphics to dynamically alter the main screening parameters with automatic update of the list of identified putative TFBS. PREDetector 2.0 also has the following additional options: (i) access to genome sequences from different databases, (ii) access to weight matrices from public repositories, (iii) visualization of the predicted hits in their genomic context, (iv) grouping of hits identified in the same upstream region, (v) possibility to store the performed jobs, and (vi) automated export of the results in various formats. PREDetector 2.0 is available at http://predetector.fsc.ulg.ac.be/. [less ▲]

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See detailSpeech style manipulations in dysarthria in French-speaking children: Acoustic findings.
Ancelle, Josephine; Moya Gale, G.; Hetrick, B et al

Poster (2016, November)

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See detailMeasurements of reference ISO nozzles by high-speed imaging
De Cock, Nicolas ULg; Massinon, Mathieu ULg; Nuyttens, David et al

in Crop Protection (2016), 89

Agricultural spray characteristics determine the efficiency of a pesticide application because size and velocity affect droplet trajectory and impact behavior. At present, the relevance of different ... [more ▼]

Agricultural spray characteristics determine the efficiency of a pesticide application because size and velocity affect droplet trajectory and impact behavior. At present, the relevance of different characterization techniques remains controversial since discrepancies may be significant between measurements performed in different laboratories. A digital image acquisition technique and analysis algorithm is proposed for droplet size and velocimetry measurements as an alternative to well-established techniques such as the Phase Doppler Particle Analyzer (PDPA) or laser diffraction spectrometry (LDS). The algorithm requires double exposed shadow images acquired in a back-lighted arrangement with a Particle Image Velocimetry (PIV) camera and a pulsed light emitting diode (LED). Spatial illumination heterogeneities are corrected by subtracting from each image a mean background acquired on several images without any particle. The algorithm accuracy is ensured by the rejection of out-of-focus particles using a focus parameter depending on gradient intensity at the particle edges. Thresholds for focus particle selection were determined by studying the evolution of the focus parameter and the error on particle size measurements from images containing droplets with uniform size at various distance of the object plane. Selected droplets were identified on both pairs of images to determine their size and velocity. Droplet size distributions were corrected to account for the uneven sampling probability caused by the volumetric method. Droplet size distributions of a set of reference nozzle/pressure combinations defined in the ISO/DIS 25358 were measured. The image technique was able to distinguish each of the reference sprays well. Comparison with PDPA measurements showed that the imaging technique tends to measure an equivalent Dv50, a lower Dv10 and a higher Dv90 leading therefore to a higher relative span factor. Velocity measurements showed good agreement between both techniques except for one nozzle/pressure combination. [less ▲]

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See detailLa médiation, un "quasi-concept"
Servais, Christine ULg

in Servais, Christine (Ed.) La médiation. Théorie et terrains (2016)

Il s'agit d'une présentation des problématiques qui traversent l'ouvrage à partir du constat d'un écart entre l'approche théorique de la médiation et son approche par les pratiques.

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See detailNonlinear dynamical tunneling of optical whispering gallery modes in the presence of a Kerr nonlinearity
Shim, Jeong -Bo ULg; Schlagheck, Peter ULg; Hentschel, Martina et al

in Physical Review A (2016), 94

The effect of a Kerr nonlinearity on dynamical tunneling is studied, using coupled whispering gallery modes in an optical microcavity. The model system that we have chosen is the “add-drop filter,” which ... [more ▼]

The effect of a Kerr nonlinearity on dynamical tunneling is studied, using coupled whispering gallery modes in an optical microcavity. The model system that we have chosen is the “add-drop filter,” which is comprised of an optical microcavity and two waveguides coupled to the cavity. Due to the evanescent fields scattering on the waveguide, the whispering gallery modes in the microcavity form doublets, which manifest themselves as splittings in the spectrum. As these doublets can be regarded as a spectral feature of dynamical tunneling between two different dynamical states with a spatial overlap, the effect of a Kerr nonlinearity on the doublets is numerically investigated in the more general context of the relationship between cubic nonlinearity and dynamical tunneling. Within the numerical realization of the model system, it is observed that the doublets show a bistable transition in their transmission curve as the Kerr nonlinearity in the cavity is increased. At the same time, one rotational mode becomes dominant over the other one in the transmission, since the two states in the doublet have uneven linewidths. By using coupled-mode theory, the underlying mode dynamics of the phenomena is theoretically modeled and clarified. [less ▲]

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See detailReverse Traceroute with DisNETPerf, a Distributed Internet Paths Performance Analyzer
Wassermann, Sarah ULg; Casas, Pedro

in Proc. Demonstrations of the 41th Annual IEEE Conference on Local Computer Networks (LCN-Demos 2016) (2016)

Traceroute is the most widely used Internet path diagnosis tool today. A major limitation of traceroute when the destination is not controllable by the user is its inability to measure reverse paths, i.e ... [more ▼]

Traceroute is the most widely used Internet path diagnosis tool today. A major limitation of traceroute when the destination is not controllable by the user is its inability to measure reverse paths, i.e., the path from a destination back to the source. In this demo session, we showcase DisNETPerf, a new tool to perform reverse traceroute measurements. DisNETPerf is able to collect measurements from the server to the user for path performance monitoring and troubleshooting purposes, even when the server is not under the control of the experimenter. DisNETPerf uses RIPE Atlas, a largely distributed active measurements platform to perform traceroute measurements from any arbitrarily selected server in the Internet. [less ▲]

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See detailFreedom of religion in the workplace in Belgium
Kéfer, Fabienne ULg

in Camas Roda, Ferran (Ed.) Exercising the right to freedom of religion in the workplace at the international and European level: A comparative study of the United Kingdom, France, Belgium and Spain (2016)

This conference explores the way in which Belgian law deals with situations where labour law engages with the right to freedom of religion and belief and the right not to be discriminated on grounds of ... [more ▼]

This conference explores the way in which Belgian law deals with situations where labour law engages with the right to freedom of religion and belief and the right not to be discriminated on grounds of religion. It starts with the Belgian regime of religious freedom, protection against discrimination and valid reasons for termination of employment. It then considers specific areas of those regimes in Belgian labour relations, such as the work schedule accommodation, the refusal to perform work, clothing and religious symbols in the workplace, and the work in an ethos organization. It relates mainly to Belgian case law but also to the case law of the European courts [less ▲]

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See detailAttack-Prevention and Damage-Control Investments in Cybersecurity
Lam, Wing Man Wynne ULg

Scientific conference (2016, November)

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See detailM. MINÉ, Droit des discriminations dans l'emploi et le travail
Kéfer, Fabienne ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2016), (37), 1783

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See detailSleep and Electroencephalography, Preprocessing and analyses of a specific sleep EEG pattern
Coppieters't Wallant, Dorothe ULg

Doctoral thesis (2016)

Preprocessing and analyses of a specific sleep EEG pattern. Automatic detection methods, self-adjustable to individuals characteristics, were developed in order to remove artefacts from EEG sleep ... [more ▼]

Preprocessing and analyses of a specific sleep EEG pattern. Automatic detection methods, self-adjustable to individuals characteristics, were developed in order to remove artefacts from EEG sleep recordings, detect sleep spindles and analyse NREM power spectrum. Methods are described, assessed and discussed. [less ▲]

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See detailRecension de l'ouvrage de G. Rosoux : Vers une "dématérialisation" des droits fondamentaux?
Bouhon, Frédéric ULg

in Revue de la Faculté de Droit de l'Université de Liège (2016), 2016(3), 631-633

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See detailExtraction Socket Management with Buccal Plate Expansion: Preliminary Results of a Novel Technique
Fernandez Ayora, Alberto; González-Martín, Oscar; ROMPEN, Eric ULg et al

in International Journal of Periodontics & Restorative Dentistry (2016), 36(6),

The primary objective of this pilot study was to evaluate a new socket preservation technique involving the intentional expansion of the extraction socket buccal plate using a flapless internal ... [more ▼]

The primary objective of this pilot study was to evaluate a new socket preservation technique involving the intentional expansion of the extraction socket buccal plate using a flapless internal corticotomy and biomaterials. A total of 11 patients requiring tooth extraction were enrolled in this study. The aim of this technique was to maintain or improve the hard and soft tissue contour of the ridge after tooth extraction. All surgical sites healed uneventfully. Significant alveolar bone dimension changes were observed in the coronal region of the ridge (-1.4 ± 0.9 mm); however, it was only slightly lower at the medium (-0.35 ± 0.7 mm) and apical levels (-0.3 ± 0.8 mm) (P > .05). The ridge dimensional changes were significantly higher in the buccal aspect than in the palatal aspect in all patients. Vertical bone resorption was not significant. Concerning the soft tissue contour, the horizontal distance between the preoperative and postoperative buccal profiles ranged from 0.94 to -2.88 mm. The proposed ridge preservation technique may help maintain the volume of the healed ridge but cannot completely prevent contour changes after tooth extraction. [less ▲]

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See detailRobustness of spatial autocorrelation tests
Ernst, Marie ULg

Poster (2016, November)

Spatial autocorrelation expresses the dependence between values at neighbouring locations. Testing if the spatial autocorrelation is significant may confirm or deny the need to consider spatial analysis ... [more ▼]

Spatial autocorrelation expresses the dependence between values at neighbouring locations. Testing if the spatial autocorrelation is significant may confirm or deny the need to consider spatial analysis over the classical one. Indeed, the analysis of spatial data is only meaningful if the spatial components bring information. Several measures of spatial autocorrelation are defined in the literature. Moran’s index, Geary’s ratio and Getis-Ord statistic are the most used statistics. Tests based on these measures have been developed in the literature using asymptotic and permutation results. They are used in practice in many fields, for instance in geography, economics, biogeosciences, medicine, ... However, these tests should be cautiously applied because they are not robust. A single contaminated observation can significantly modify their results. This poster is composed of two parts. Firstly, the robustness of already available tools for measuring spatial autocorrelation will be analysed. Secondly, alternative methods will be proposed to robustly test the spatial autocorrelation. [less ▲]

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See detailExcited hyperons of the N = 2 band in the 1/Nc expansion
Stancu, Floarea ULg

in Bled Workshops in Physics (2016, November), 17(1), 25-31

The spectrum of excited baryons in the $N$ = 2 band is reanalyzed in the $1/N_c$ expansion method, with emphasis on hyperons. Predictions are made for the classification of these excited baryons into SU(3 ... [more ▼]

The spectrum of excited baryons in the $N$ = 2 band is reanalyzed in the $1/N_c$ expansion method, with emphasis on hyperons. Predictions are made for the classification of these excited baryons into SU(3) singlets, octets and decuplets. [less ▲]

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See detailA scanning Hall probe microscope for high resolution, large area, variable height magnetic field imaging
Shaw, Gorky ULg; Kramer, R. B. G.; Dempsey, N. M. et al

in Review of Scientific Instruments (2016), 87(11),

We present a scanning Hall probe microscope operating in ambient conditions. One of the unique features of this microscope is the use of the same stepper motors for both sample positioning as well as ... [more ▼]

We present a scanning Hall probe microscope operating in ambient conditions. One of the unique features of this microscope is the use of the same stepper motors for both sample positioning as well as scanning, which makes it possible to have a large scan range (few mm) in the x and y directions, with a scan resolution of 0.1 μm. Protocols have been implemented to enable scanning at different heights from the sample surface. The z range is 35 mm. Microstructured Hall probes of size 1-5 μm have been developed. A minimum probe-sample distance <2 μm has been obtained by the combination of new Hall probes and probe-sample distance regulation using a tuning fork based force detection technique. The system is also capable of recording local B(z) profiles. We discuss the application of the microscope for the study of micro-magnet arrays being developed for applications in micro-systems. [less ▲]

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See detailUse of long bolts for beam-to-concrete-filled rectangular hollow section column joints in seismic-resistant frames
Hoang, Van Long; Jaspart, Jean-Pierre ULg; Demonceau, Jean-François ULg

in Steel Construction (2016), 9(4), 305-314

A research on a specific type of unstiffened extended end-plate joint used to connect I-shaped beams to concrete-filled rectangular hollow section columns is presented in this paper. The main idea is to ... [more ▼]

A research on a specific type of unstiffened extended end-plate joint used to connect I-shaped beams to concrete-filled rectangular hollow section columns is presented in this paper. The main idea is to use long bolts throughout the column to connect the beam end-plates, so: (1) avoiding intermediate connecting elements (e.g. a reverse U channel) or special bolts (e.g. blind bolts) that are sometimes used in practice; (2) improving the resistance and stiffness of the joint to be used in seismic resistant frames. Firstly, a test program has been performed within a RFCS European project entitled HSS-SERF “High Strength Steel in Seismic Resistant Building Frames”, 2009-2013. In the test program, specimens subjected to significant bending moments (and shear) or to shear only have been defined. Then, analytical models based on the component approach and aimed at predicting the joint response have been proposed; their validity is demonstrated through comparisons with the test results. Finally, the requirements of EN-1998-1-1 related to full strength resistance for the proposed joint configuration are discussed, accounting for the actual position of plastic hinges and the possible individual over-strength factors for each component. [less ▲]

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See detailAvoir faim au risque d'en mourir ? Le paradoxe de l'anorexie mentale.
Triffaux, Jean-Marc ULg; Moukhaiber, sophie; PIETTE, Catherine ULg

in Revue Médicale de Liège (2016), 71(11), 495-501

Anorexia nervosa is a complex pathology that regularly leads clinicians to a therapeutic impasse. The origin of this disorder is multifactorial. It occurs most often in adolescence and affects mainly ... [more ▼]

Anorexia nervosa is a complex pathology that regularly leads clinicians to a therapeutic impasse. The origin of this disorder is multifactorial. It occurs most often in adolescence and affects mainly women. Paradoxically, hunger is present but dissociated from adequate food function. Somatic and psychological impact can be particularly heavy. The treatment is difficult and requires a multidisciplinary care. An eclectic and integrative approach, moving away from rigid therapeutic methods and integrating the plurality of techniques, seems to be particularly recommended to increase the chances of therapeutic success. This article summarizes the various theoretical models of anorexia nervosa and its modalities of treatment. [less ▲]

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See detailAre there biologic factors of good prognosis after a platelet rich plasma (PRP) injection for tendinopathies ?
Libertiaux, Vincent ULg; Sancerne, Audrey; LE GOFF, Caroline ULg et al

in Journal of Exercise, Sports & Orthopedics (2016), 3(2), 1-4

Background : The aims of this study were to evaluate the effect of a single PRP injection followed by a standardized reeducation protocol among patients suffering from different tendinopathies, but ... [more ▼]

Background : The aims of this study were to evaluate the effect of a single PRP injection followed by a standardized reeducation protocol among patients suffering from different tendinopathies, but otherwise healthy, and to determine the biomarkers that constitute good prognosis factors, if any. Methods : 48 patients suffering from different tendinopathies and refractory to conventional physiotherapy were treated with a single PRP injection. Prior to the injection, a blood sample was drawn and some biological parameters (glycemia, cholesterolemia,...) were measured. A pain assessment was then made using a Visual Analog Scale of pain (VAS) and a pressure algometer. The same assessment was carried out after 6 weeks and 12 weeks when possible. Results : There is an overall significant improvement in VAS score at the end of the 12 weeks follow- up. However, no correlation was found between the evolution of the clinical scores and the biological parameters measured. Conclusion: A PRP injection followed by a program of eccentric rehabilitation positively affects the algo-functional scores of patients with tendinopathies who were refractory to conventional physio- therapy, whatever the initial values of the measuured biological parameters. [less ▲]

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See detailVerhaeren, Poésie complètes, Poèmes en prose
Bertrand, Jean-Pierre ULg

Book published by Archives et Musée de la littérature (2016)

Edition critique de la totalité des poèmes en prose de Verhaeren écrits entre 1886 et 1895, avec un inédit. Ces textes, publiés en revue, sont ici réunis pour la première fois.

Detailed reference viewed: 42 (4 ULg)