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See detailPrinciples of design of a set-reset finite state logic nanomachine
Klein, M.; Levine, R. D.; Remacle, Françoise ULg

in Journal of Applied Physics (2008), 104(4),

Pulsed electrical set and reset inputs are used to simulate the temporal action of a finite state machine in a three terminal configuration for a variety of arrangements. The gate electrode is necessary ... [more ▼]

Pulsed electrical set and reset inputs are used to simulate the temporal action of a finite state machine in a three terminal configuration for a variety of arrangements. The gate electrode is necessary only if it is of interest to tune the tunneling rate and to compensate for background charges. When the output is the current, a source and drain electrodes are required. If the output is determined by measuring charge occupancy, then a single junction suffices. The electron transfer rates are computed from the free energy change for a single electron transfer to or from a quantum dot of size such that only charge quantization matters. For a small enough dot the device could operate at room temperature. An asymmetric configuration of the source and drain favors a longer term time preservation of the memory of the device. An alternative design that operates with the same energetics and kinetic parameters is to pulse the resistance rather than the voltage. (C) 2008 American Institute of Physics. [less ▲]

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See detailVers la création d’un méta-modèle générique de l’information spatiale 3D urbaine
Billen, Roland ULg; Laplanche, François ULg; Zlatanova, Siyka et al

in Revue XYZ (2008), 114(1), 37-42

The need of 3D urban spatial data infrastructures (3D SDI) is now almost commonly accepted. However, their implementation suffers from a lack of standardisation. This is usually due to an underestimation ... [more ▼]

The need of 3D urban spatial data infrastructures (3D SDI) is now almost commonly accepted. However, their implementation suffers from a lack of standardisation. This is usually due to an underestimation of the initial conceptual step, where modelling options should be clearly stated. In this article, we present a modelling ontological approach inspired by our experience in spatial data acquisition techniques. In this ontology, one considers that the universe is composed of free space and occupied space and that their interface is the only measurable feature. On that basis, we present a generic 3D urban spatial information meta-model. This meta-model is compared to the City GML standard through the study of the building object. Expect from some level-ofdetail issues, both models are compatible. [less ▲]

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See detailAnalyse quantitative par spectroscopie proche infrarouge: Application au test d'unifomité de teneur des comprimés
Ginot, Y. M.; Bernard-Moulin, P.; Cinier, R. et al

Conference (2008)

La spectroscopie Proche infrarouge présente un large potentiel d'applications dans l'industrie pharmaceutique par sa capacité à transmettre des informations reliées à la fois à la structure chimique des ... [more ▼]

La spectroscopie Proche infrarouge présente un large potentiel d'applications dans l'industrie pharmaceutique par sa capacité à transmettre des informations reliées à la fois à la structure chimique des échantillons et à leur état physique. Elle peut être mise à profit pour des analyses qualitatives, telles l'identification des matières premières, et également pour des analyses quantitatives telles le dosage d'un principe actif dans un comprimé. Avec pour avantage une rapidité inégalée pour délivrer un résultat comparée aux techniques classiques en vigueur. Attrayante par ses performances, cette spectroscopie nécessite cependant une prise en main qui doit respecter une démarche minutieuse et souvent déroutante par son aspect heuristique (allers-retours) et à la mise en oeuvre d'outils d'analyse statistique multivariée. Si de nombreuses publications témoignent de la puissance de cet outil, il est apparu opportun de rassembler en un même texte la démarche de développement à suivre et les repères à connaître pour permettre son utilisation en analyse quantitative dans un contexte de libération pharmaceutique. Le travail de cette commission a été de rassembler les éléments issus de la pratique industrielle en se concentrant sur l'un des essais les plus intéressants: celui de l'uniformité de teneur des comprimés. Ce test est en effet l'une des applications où la rapidité de mise en oeuvre est le plus appréciable, tout en étant celui qui peut poser le plus de questions quant à la validité des résultats et la prise de décision pharmaceutique. [less ▲]

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See detailQuality evaluation of Apples
Leemans, Vincent ULg; Kleynen, Olivier

in Sun, Da-Wen (Ed.) Computer Vision Technology for Food Quality Evaluation (2008)

The chapter describe how to asses apple quality by using machine vision. The concept of quality of an apple is detailed. The manipulation of the fruits, the lighting and the acquisition techniques are ... [more ▼]

The chapter describe how to asses apple quality by using machine vision. The concept of quality of an apple is detailed. The manipulation of the fruits, the lighting and the acquisition techniques are reviewed. The shape and colour assessment are summarised. The evaluation of the surface defects is [less ▲]

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See detailAcoustique du bâtiment
Embrechts, Jean-Jacques ULg

Learning material (2008)

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See detailSzűz Mária alakja a nők és a feminizmus történetében
Delfosse, Annick ULg; Gabi, Somorjai

in Pannonhalmi Szemle (2008), 16(2), 63-68

The A. offers to study the place of the Marian figure in the women story. She proves to show various points of view: the masculine cleric authorities’ use of the Virgin as an identification norm imposed ... [more ▼]

The A. offers to study the place of the Marian figure in the women story. She proves to show various points of view: the masculine cleric authorities’ use of the Virgin as an identification norm imposed to the women as well as the claim of these latter that the Virgin is also an emancipation tool. [less ▲]

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See detailVibrational computing: Simulation of a full adder by optimal control
Bomble, L.; Lauvergnat, D.; Remacle, Françoise ULg et al

in Journal of Chemical Physics (2008), 128(6),

Within the context of vibrational molecular quantum computing, we investigate the implementation of a full addition of two binary digits and a carry that provides the sum and the carry out. Four qubits ... [more ▼]

Within the context of vibrational molecular quantum computing, we investigate the implementation of a full addition of two binary digits and a carry that provides the sum and the carry out. Four qubits are necessary and they are encoded into four different normal vibrational modes of a molecule. We choose the bromoacetyl chloride molecule because it possesses four bright infrared active modes. The ground and first excited states of each mode form the one-qubit computational basis set. Two approaches are proposed for the realization of the full addition. In the first one, we optimize a pulse that implements directly the entire addition by a single unitary transformation. In the second one, we decompose the full addition in elementary quantum gates, following a scheme proposed by Vedral [Phys. Rev. A 54, 147 (1996)]. Four elementary quantum gates are necessary, two two-qubit CNOT gates (controlled NOT) and two three-qubit TOFFOLI gates (controlled-controlled NOT). All the logic operations consist in one-qubit flip. The logic implementation is therefore quasiclassical and the readout is based on a population analysis of the vibrational modes that does not take the phases into account. The fields are optimized by the multitarget extension of the optimal control theory involving all the transformations among the 2(4) qubit states. A single cycle of addition without considering the preparation or the measure or copy of the result can be carried out in a very competitive time, on a picosecond time scale. (C) 2008 American Institute of Physics. [less ▲]

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See detailInvestigation of carbohydrate binding property of a fungal lectin from Xerocomus chrysenteron and potential use on Myzus persicae aphid.
Jaber, Karimi; Cuartero Diaz, Gaetan; Haubruge, Eric ULg et al

in Communications in Agricultural and Applied Biological Sciences (2008), 73(3), 629-38

In recent years encoding insecticidal Lectins have been suggested as one of the promising methods against insect pests and have been engineered successfully into a variety of crops including wheat, rice ... [more ▼]

In recent years encoding insecticidal Lectins have been suggested as one of the promising methods against insect pests and have been engineered successfully into a variety of crops including wheat, rice, tobacco and potatoes. Xerocomus chrysenteron Lectin (XCL) has a high hemagglutinating activity and results obtained from sugar specificity assay showed to have specific affinity to Galactose and N-Acetylgalactosamine (GalNAc). In previous studies, XCL was shown to have negative effects on some insect pests, including aphids. In the present study, the effects of different carbohydrates including D-glucose, D-mannose, D-galactose and GalNAc, associated with 0.1% XCL (w/v) in artificial diet was investigated to assess the evolution of the lectin toxicity toward Myzus persicae aphid during 7 days. M. persicae, a polyphagous aphid, showed no significant differences of mortality when fed with the XCL lectin associated with Glucose and Mannose or fed on XCL diet only. At the opposite, the mortality rates related to artificial diet supplemented with Galactose or GalNAc and XCL were significantly reduced. There was then a significant mortality difference between M. persicae fed on an artificial diet incorporated specific carbohydrate binding Lectin with those fed with lectin only. The potential use of this particular fungal Lectin (XCL) with more specific carbohydrate binding will be discussed in relation to the development of bio-insecticide and integrated pest management. [less ▲]

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See detailUtiliser la logique floue pour gérer une production
Henry, Valérie ULg

in Tangente (2008), 126

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See detailQuand la politique est conviée sur les planches. Spectacles, patriotisme et morale politique dans les collèges jésuites belges au XVIIe s.
Delfosse, Annick ULg

in Cahiers du Centre de Recherches en Histoire du Droit et des Institutions (2008), 29

Mars enchaîné, tyran renversé, impiété condamnée, paix exaltée : les grandes actions publiques des élèves des collèges des jésuites des provinces belges montrent la dimension très politique du théâtre ... [more ▼]

Mars enchaîné, tyran renversé, impiété condamnée, paix exaltée : les grandes actions publiques des élèves des collèges des jésuites des provinces belges montrent la dimension très politique du théâtre jésuite. Le présent article en étudie les modalités et les objectifs. [less ▲]

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See detailInterférence négative du travail sur la famille et stress au travail : impact du support organisationnel perçu
Hansez, Isabelle ULg; Stinglhamber, Florence; Hanin, Dorothée

in Pettersen, N.; Boudrias, J. S.; Savoie, A. (Eds.) Entre tradition et innovation, comment transformons-nous l'univers de travail? Actes du 15ème congrès de Psychologie du Travail et des Organisations de Langue Française (2008)

Le modèle de Karasek (1979) est l’un des modèles le plus utilisé dans les recherches sur le lien travail-famille et sur le stress professionnel. Parmi les variables qu’il inclut, figurent le support ... [more ▼]

Le modèle de Karasek (1979) est l’un des modèles le plus utilisé dans les recherches sur le lien travail-famille et sur le stress professionnel. Parmi les variables qu’il inclut, figurent le support social du supérieur et des collègues. À notre connaissance, peu d’études ont essayé d’analyser le lien entre l’interférence travail-famille, le stress négatif et d’autres sources de support social tel que le support perçu de l’organisation. Or, en accord avec la méta-analyse de Rhoades & Eisenberger en 2002, nous faisons l’hypothèse que le support organisationnel perçu joue un rôle central dans le lien entre les caractéristiques du travail, l’interférence négative travail-famille et le stress négatif qui en découle. Notre étude s’est réalisée dans un hôpital belge auprès de 266 membres du personnel soignant. Le questionnaire utilisé comprend : le Job Content Questionnaire de Karasek; l’échelle de support organisationnel perçu de Eisenberger (1986), l’échelle d’interférence négative du travail sur la famille (SWING, Geurts, 2004) et le stress négatif (SPPN, Hansez et al., 2004). Il en résulte que le support organisationnel perçu joue un rôle central dans les relations entre certaines caractéristiques du travail, l’interférence négative travail-famille et le stress par le biais d’une double médiation. En outre, l’effet négatif des exigences de travail sur le support organisationnel perçu est modéré par la latitude de décision que les employés peuvent avoir dans leur travail. Les résultats suggèrent qu’introduire le support organisationnel perçu dans des modèles liés aux relations travail-famille enrichirait les deux courants de recherche envisagés dans cette étude. En outre, le type de modèle utilisé dans cette recherche pourrait aussi être appliqué à d’autres types de variables dépendantes (e.g. la performance au travail). [less ▲]

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See detailLe ‘combat pour l’intégration’ des églises congolaises (RDC) d’obédience pentecôtiste
Demart, Sarah ULg

in Revue Européenne des Migrations Internationales (2008), 24(3), 147-165

This article proposes to analyse the discourses on “integration” developed during the last few years within various “ethnics” churches (France-Belgium). Of Pentecostal and Evangelical obedience, these ... [more ▼]

This article proposes to analyse the discourses on “integration” developed during the last few years within various “ethnics” churches (France-Belgium). Of Pentecostal and Evangelical obedience, these churches, stemming from Congolese’s migrations (DRC), can be estimated to several hundreds and even up to a few thousands in Europe. Some constant can be observed in this new branch of Protestantism despite its fragmented and plural movement, particularly the right to think oneself beyond the logics of reduction to otherness. The integrationist discourse produced constitutes a real break with the ideas carried by the autochthon order of both hierarchies and centralities. [less ▲]

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See detailBis-tetrahydroisoquinoline derivatives: AG525E1, a new step in the search for non-quaternary non-peptidic small conductance Ca2+-activated K+ channel blockers
Graulich, Amaury ULg; Lamy, Cédric ULg; Alleva, Livia ULg et al

in Bioorganic & Medicinal Chemistry Letters (2008), 18(11), 3440-3445

So far, small conductance Ca2+-activated K+ channel (SK) blockers mostly consist of quaternary ammonium derivatives or peptides. Due to their physicochemical properties, these blockers are not suitable to ... [more ▼]

So far, small conductance Ca2+-activated K+ channel (SK) blockers mostly consist of quaternary ammonium derivatives or peptides. Due to their physicochemical properties, these blockers are not suitable to study the physiological roles of SK channels in the central nervous system in vivo. Herein, we report the discovery of a chiral bis-tertiary amine with SK blocking properties from chemical modulation of laudanosine. AG525E1 has an affinity for SK channels (K-i = 293 nM) approximately 100-fold higher than the tertiary compound laudanosine (K-i similar to 30 mu M) and similar to the charged compound dequalinium (K-i = 221 nM). AG525E1 equipotently blocks SK1, SK2 and SK3 currents in transfected cell lines. Because of its basic and lipophilic properties, it can reach central SK targets. (c) 2008 Elsevier Ltd. All rights reserved. [less ▲]

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See detailLes incunables et les post-incunables
Adam, Renaud ULg

in Maillard-Luypaert, Monique (Ed.) Séminaire de Tournai : histoire, bâtiments, collections (2008)

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See detailAu fil de l'interprétation. L'apport des registres aux logiciels d'analyse qualitative
Lejeune, Christophe ULg

in Schweizerische Zeitschrift für Soziologie = Revue Suisse de Sociologie (2008), 34(3), 593-603

We call register a set of markers (keywords or idiomatic expressions) allowing to spot social phenomena in textual material. The use of registers is common in qualitative sociology. Among various software ... [more ▼]

We call register a set of markers (keywords or idiomatic expressions) allowing to spot social phenomena in textual material. The use of registers is common in qualitative sociology. Among various software functionalities dedicated to textual analysis, registers remains underdeveloped. Through their experiences, first users of the Cassandre qualitative analysis free software illustrate how registers are build and which difficulties are raised. [less ▲]

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