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See detailContinuous Surface-point Distributions for 3D Object Pose Estimation and Recognition
Detry, Renaud ULiege; Piater, Justus ULiege

in Asian Conference on Computer Vision (2010)

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See detailContinuous synthesis of porous carbon xerogel beads.
Eskenazi, David ULiege; Kreit, Patrick ULiege; Compère, Philippe ULiege et al

in Proceedings of the International Carbon Conference 2012 (2012, June 17)

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See detailA continuous time approach to Robbins' problem of minimizing the expected rank
Bruss, F. Thomas; Swan, Yvik ULiege

in Journal of Applied Probability (2009), 46

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See detailContinuous variables logic via coupled automata using a DNAzyme cascade with feedback
Lilienthal, Sivan; Orbach, Ron; Willner, Itamar et al

in Chemical Science (2017), 8

The concentration of molecules can be changed by chemical reactions and thereby offer a continuous readout. Yet computer architecture is cast in textbooks in terms of binary valued, Boolean variables. To ... [more ▼]

The concentration of molecules can be changed by chemical reactions and thereby offer a continuous readout. Yet computer architecture is cast in textbooks in terms of binary valued, Boolean variables. To enable reactive chemical systems to compute we show how, using the Cox interpretation of probability theory, one can transcribe the equations of chemical kinetics as a sequence of coupled logic gates operating on continuous variables. It is discussed how the distinct chemical identity of a molecule allows us to create a common language for chemical kinetics and Boolean logic. Specifically, the logic AND operation is shown to be equivalent to a bimolecular process. The logic XOR operation represents chemical processes that take place concurrently. The values of the rate constants enter the logic scheme as inputs. By designing a reaction scheme with a feedback we endow the logic gates with a built in memory because their output then depends on the input and also on the present state of the system. Technically such a logic machine is an automaton. We report an experimental realization of three such coupled automata using a DNAzyme multilayer signaling cascade. A simple model verifies analytically that our experimental scheme provides an integrator generating a power series that is third order in time. The model identifies two parameters that govern the kinetics and shows how the initial concentrations of the substrates are the coefficients in the power series. [less ▲]

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See detailContinuous-Flow N-Heterocyclic Carbene Generation and Organocatalysis
Di Marco, Lorenzo; Hans, Morgan; Delaude, Lionel ULiege et al

in Chemistry : A European Journal (2016), 22

Two methods were assessed for the generation of common N heterocyclic carbenes (NHCs) from stable imidazol(in)¬ium precursors using convenient and straightforward continuous-flow setups with either a ... [more ▼]

Two methods were assessed for the generation of common N heterocyclic carbenes (NHCs) from stable imidazol(in)¬ium precursors using convenient and straightforward continuous-flow setups with either a heterogeneous inorganic base (Cs2CO3 or K3PO4) or a homoge¬neous organic base (KN(SiMe3)2). In-line quenching with carbon disulfide revealed that the homogeneous strategy was most efficient for the preparation of a small library of NHCs. The generation of free nucleophilic carbenes was next telescoped with two benchmark NHC-catalyzed reactions, namely, the transesterification of vinyl acetate with benzyl alcohol and the amidation of N-Boc-glycine methyl ester with ethanolamine. Both organocatalytic transfor¬ma¬tions proceeded with total conversion and excellent yields were achieved after extraction, showcasing the first examples of continuous-flow organocatalysis with NHCs. [less ▲]

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See detailContinuous-flow production of alkyl nitrites
Monbaliu, Jean-Christophe ULiege; Jorda, Jeremy; Chevalier, Bérengère et al

in Chimica Oggi = Chemistry Today (2011), 29

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See detailContinuous-flow thermolysis for the preparation of vinylglycine derivatives
Lamborelle, Nicolas ULiege; Simon, Justine ULiege; Luxen, André ULiege et al

in Organic & Biomolecular Chemistry (2015), 13

Syn sulfoxide elimination was carried out under continuous-flow conditions in a mesofluidic thermolysis reactor. The design of the reactor enabled accurate control of reaction time and conditions ... [more ▼]

Syn sulfoxide elimination was carried out under continuous-flow conditions in a mesofluidic thermolysis reactor. The design of the reactor enabled accurate control of reaction time and conditions, affording a convenient scale-independent procedure for the production of N,C-protected vinylglycine derivatives. Thermolysis at 270 °C under 1000 psi of pressure in superheated toluene enabled typical daily outputs ranging from 11 to 46 g per day with excellent selectivities and ee (>97%). The various competitive reaction pathways were studied and rationalized according to a computational study. [less ▲]

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See detailContinuous-state reinforcement learning with fuzzy approximation
Busoniu, Lucian; Ernst, Damien ULiege; De Schutter, Bart et al

in Tuyls, K.; Nowé, A.; Guessoum, Z. (Eds.) et al Adaptive Agents and Multi-Agent Systems III, Adaptation and Multi-Agent Learning (2008)

Reinforcement learning (RL) is a widely used learning paradigm for adaptive agents. There exist several convergent and consistent RL algorithms which have been intensively studied. In their original form ... [more ▼]

Reinforcement learning (RL) is a widely used learning paradigm for adaptive agents. There exist several convergent and consistent RL algorithms which have been intensively studied. In their original form, these algorithms require that the environment states and agent actions take values in a relatively small discrete set. Fuzzy representations for approximate, model-free RL have been proposed in the literature for the more difficult case where the state-action space is continuous. In this work, we propose a fuzzy approximation architecture similar to those previously used for Q-learning, but we combine it with the model-based Q-value iteration algorithm. We prove that the resulting algorithm converges. We also give a modified, asynchronous variant of the algorithm that converges at least as fast as the original version. An illustrative simulation example is provided. [less ▲]

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See detailContinuous-state reinforcement learning with fuzzy approximation
Busoniu, Lucian; Ernst, Damien ULiege; Babuska, Robert et al

in Proceedings of the 7th European Symposium on Adaptive Learning Agents and Multi-Agent Systems (ALAMAS-07) (2007)

Reinforcement learning (RL) is a widely used learning paradigm for adaptive agents. Well-understood RL algorithms with good convergence and consistency properties exist. In their original form, these ... [more ▼]

Reinforcement learning (RL) is a widely used learning paradigm for adaptive agents. Well-understood RL algorithms with good convergence and consistency properties exist. In their original form, these algorithms require that the environment states and agent actions take values in a relatively small discrete set. Fuzzy representations for approximate, model-free RL have been proposed in the literature for the more difficult case where the state-action space is continuous. In this work, we propose a fuzzy approximation structure similar to those previously used for Q-learning, but we combine it with the model-based Q-value iteration algorithm. We show that the resulting algorithm converges. We also give a modif ed, serial variant of the algorithm that converges at least as fast as the original version. An illustrative simulation example is provided. [less ▲]

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See detailContinuous-time susbspace flows related to the symmetric eigenvalue problem
Absil, Pierre-Antoine; Sepulchre, Rodolphe ULiege; Mahony, Robert

in Pacific Journal of Optimization (2008), 4(2), 179--194

The classes of continuous-time flows on Rn×p that induce the same flow on the set of p-dimensional subspaces of Rn are described. The power flow is briefly reviewed in this framework, and a subspace ... [more ▼]

The classes of continuous-time flows on Rn×p that induce the same flow on the set of p-dimensional subspaces of Rn are described. The power flow is briefly reviewed in this framework, and a subspace generalization of the Rayleigh quotient flow [Linear Algebra Appl. 368C, 2003, pp. 343–357] is proposed and analyzed. This new flow displays a property akin to deflation in finite time. [less ▲]

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See detailA Continuum Damage Mechanics based bone remodelling model in a finite strain framework
Mengoni, Marlène ULiege; Ponthot, Jean-Philippe ULiege

in ECCM 2010, 4th European Conference on Computational Mechanics (2010)

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See detailA Continuum Damage Mechanics Model for the Analysis of the Crashworthiness of Composite Structures: A work in progress
Chiu, Louis N S; Falzon, Brian G; Boman, Romain ULiege

in Proceedings of the 15th Australian Aeronautical Conference (2013, February)

The crashworthiness capability of an aircraft structure is dependent on its ability to attenuate crash loading via the controlled deformation of energy absorbing devices. An energy-based constitutive ... [more ▼]

The crashworthiness capability of an aircraft structure is dependent on its ability to attenuate crash loading via the controlled deformation of energy absorbing devices. An energy-based constitutive relation was employed to model the behaviour of carbon fibre reinforced epoxy resin composite material under crush loading. Each of the damage modes in the fibre and matrix was treated separately with its own damage initiation and progression relationships as well as a damage parameter that tracks damage progression. Each damage parameter dictates the reduction in stiffness in the respective principal loading directions. This model was implemented for a 3D solid brick element in contrast to shell-based formulations currently available. Crushing composite structures were modelled and the results validated against experimental data. The force-displacement response / specific energy absorption and the failure modes obtained from the simulation show that the underlying physics of the crushing have been captured by the proposed model but that further work is required for reliable quantitative correlation. [less ▲]

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See detailA continuum damage model for alveolar bone remodeling
Mengoni, Marlène ULiege; Ponthot, Jean-Philippe ULiege

in Fourth International Conference on Advance COmputational Methods in ENgineering - ACOMEN 2008 (2008, May)

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See detailThe continuum of cytokine involvement in the physiology of reproduction
Geenen, Vincent ULiege; Hazee, Marie-Thérèse ULiege; Goxe, Béatrice et al

in GENESIS (1995), 14

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See detailThe continuum of cytokine involvement in the reproductive process
Geenen, Vincent ULiege

Conference (1995, September)

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See detailThe Continuum of Grief: From Scandinavian Mythology to Zen Buddhism: Janet Frame's Intertextual Strategies in Snowman, Snowman
Gabrielle, Cindy ULiege

in Sino-US English Teaching (2012), 9(10), 1627-1636

In the wake of Richards Benton's "Keats and Zen" (published in Philosophy East and West [1966]), this paper sets out to examine Janet Frame's appropriation of Buddhist philosophy in Snowman, Snowman (1962 ... [more ▼]

In the wake of Richards Benton's "Keats and Zen" (published in Philosophy East and West [1966]), this paper sets out to examine Janet Frame's appropriation of Buddhist philosophy in Snowman, Snowman (1962). The novella's allusions to a Buddhist-like epistemology, together with its subtle references to Scandinavian myths, however, have so far remained uncovered and are therefore best approached in the light of what has been called "the suppressed intertextuality in post-colonial writing". The author's intention in this paper is twofold: on the one hand, the author will suggest that post-colonial writers do not necessarily write against the Western canon and that maintaining the contrary amounts to vindicating the centrality of imperial texts in the contemporary literary scene - an endeavour which is hardly post-colonial. On the other hand, the author will go some way towards shifting eastward the core of Frame's ontology by suggesting that her poetics is anchored not only in Western thinking, but also, perhaps more importantly so, in Eastern philosophy. The author’s primary impulse, however, in examining the interplay between canonical and peripheral intertextualities, is to illuminate in fundamental fashion the haunting beauty of the writer's universe and the lyricism of Snowman, Snowman. [less ▲]

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See detailContinuum-level modelling of cellular adhesion and matrix production in aggregates.
Geris, Liesbet ULiege; Ashbourn, Joanna M A; Clarke, Tim

in Computer Methods in Biomechanics & Biomedical Engineering (2011), 14(5), 403-10

Key regulators in tissue-engineering processes such as cell culture and cellular organisation are the cell-cell and cell-matrix interactions. As mathematical models are increasingly applied to investigate ... [more ▼]

Key regulators in tissue-engineering processes such as cell culture and cellular organisation are the cell-cell and cell-matrix interactions. As mathematical models are increasingly applied to investigate biological phenomena in the biomedical field, it is important, for some applications, that these models incorporate an adequate description of cell adhesion. This study describes the development of a continuum model that represents a cell-in-gel culture system used in bone-tissue engineering, namely that of a cell aggregate embedded in a hydrogel. Cell adhesion is modelled through the use of non-local (integral) terms in the partial differential equations. The simulation results demonstrate that the effects of cell-cell and cell-matrix adhesion are particularly important for the survival and growth of the cell population and the production of extracellular matrix by the cells, concurring with experimental observations in the literature. [less ▲]

Detailed reference viewed: 29 (4 ULiège)