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See detailMultistage Downstream Attack Detection in a Cyber Physical System
Qadeer, Rizwan UL; Murguia, Carlos; Ahmed, Chuadhry Mujeeb et al

in 3rd Workshop on the Security of Industrial Control Systems and of Cyber-Physical Systems In Conjunction With ESORICS 2017 (2017, September)

We present a detection scheme for attacks on a Cyber-Physical System (CPS) in which we leverage the connectivity of a multistage process to detect attacks downstream from the point of attack. Our methods ... [more ▼]

We present a detection scheme for attacks on a Cyber-Physical System (CPS) in which we leverage the connectivity of a multistage process to detect attacks downstream from the point of attack. Our methods form a control theoretic approach to CPS security by characterizing a real water treatment facility with a mathematical model; obtaining a residual (error) signal from sensor measurements and sensor measurement estimates; and finally using Cumulative Sum (CUSUM) and Bad-Data detection methods to detect the presence of a sensor attack. In particular, the attacks are designed so that they do not raise alarms on the detectors in the same stage where the attack takes place, requiring detection to take place on a separate part of the system. Proposed scheme is implemented on a real world water treatment facility. Extensive experiments are carried out and results show the significance of the proposed scheme. [less ▲]

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See detailA Multithreading Local Search For Multiobjective Energy-Aware Scheduling In Heterogeneous Computing Systems
Iturriaga, Santiago; Nesmachnow, Sergio; Dorronsoro, Bernabé UL

in European Conference on Modelling and Simulation (ECMS) (2012)

This article introduces an efficient multithreading local search algorithm for solving the multiobjective scheduling problem in heterogeneous computing systems considering the makespan and energy ... [more ▼]

This article introduces an efficient multithreading local search algorithm for solving the multiobjective scheduling problem in heterogeneous computing systems considering the makespan and energy consumption objectives. The proposed method follows a fully multiobjective approach using a Pareto-based dominance search executed in parallel. The experimental analysis demonstrates that the new multithreading algorithm outperforms a set of deterministic heuristics based on Min-Min. The new method is able to achieve significant improvements in both objectives in reduced execution times for a broad set of testbed instances. [less ▲]

Detailed reference viewed: 68 (0 UL)
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See detailA multitrait-multimethod study of assessment instruments for Complex Problem Solving
Greiff, Samuel UL; Fischer, Andreas; Wüstenberg, Sascha UL et al

in Intelligence (2013), 41

Detailed reference viewed: 223 (50 UL)
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See detailA multiuser downlink system combining limited feedback and channel correlaton information
Huang, Yongming; Yang, Luxi; Bengtsson, Mats et al

in Communications (ICC), 2010 IEEE International Conference on (2010)

We address the problem of combining limited feedback information with long-term channel statistical information in the design of downlink SDMA schemes. A novel combining method is developed to improve the ... [more ▼]

We address the problem of combining limited feedback information with long-term channel statistical information in the design of downlink SDMA schemes. A novel combining method is developed to improve the quality of channel knowledge at the base station. More specifically, a set of novel feedback parameters is proposed and a related method is developed to estimate a representation of the multiuser channel vectors at the base station. This method utilizes the hybrid information by combining instantaneous channel feedback and long-term channel statistics, and is based on a channel phase codebook designed using the generalized Lloyd algorithm. The estimated channel knowledge at the base station can be used for joint design of multiuser precoding and opportunistic scheduling. The advantage of the proposed scheme over existing CSI quantization based SDMA schemes is further confirmed by computer simulations. [less ▲]

Detailed reference viewed: 77 (0 UL)
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See detailMultivariate Approach to Creativity: Cognition and Personality
Kirsch, Christiane UL; Houssemand, Claude UL

Scientific Conference (2012, June)

Our study is founded on a multivariate approach to creativity. We analyze cognitive and personality variables in relationship to creative potential. The sample consists of 37 middle aged adults from the ... [more ▼]

Our study is founded on a multivariate approach to creativity. We analyze cognitive and personality variables in relationship to creative potential. The sample consists of 37 middle aged adults from the Grand Duchy of Luxembourg (20 women, 17 men, MAge = 41.03, SD = 7.23, age range: 29-55 years). Whereas ego-strength is positively related to creative potential, it is negatively related to psychoticism. We argue that in a population of academics psychoticism is not an essential condition for creative potential. It is rather the other side of the same coin. Ego-strength is some kind of moderator variable that determines which feature will be uncovered. We conceive that this ensues in three different forms of creativity. The first one relies on mental strength and emotional stability; the second one on emotional vulnerability and finally the third one arises from a confluence of both features. [less ▲]

Detailed reference viewed: 85 (5 UL)
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See detailMultivariate central limit theorems for averages of fractional Volterra processes and applications to parameter estimation
Nourdin, Ivan UL; Nualart, David; Zintout, Rola

Scientific journal (2015)

Detailed reference viewed: 99 (9 UL)
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See detailMultivariate Gaussian approxi- mations on Markov chaoses
Campese, Simon UL; Nourdin, Ivan UL; Peccati, Giovanni UL et al

in Electronic Communications in Probability (2016), 21

Detailed reference viewed: 199 (8 UL)
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See detailMultivariate integration of functions depending explicitly on the minimum and the maximum of the variables
Marichal, Jean-Luc UL

in Journal of Mathematical Analysis & Applications (2008), 341(1), 200-210

By using some basic calculus of multiple integration, we provide an alternative expression of the integral $$ \int_{]a,b[^n} f(\mathbf{x},\min x_i,\max x_i) \, d\mathbf{x}, $$ in which the minimum and the ... [more ▼]

By using some basic calculus of multiple integration, we provide an alternative expression of the integral $$ \int_{]a,b[^n} f(\mathbf{x},\min x_i,\max x_i) \, d\mathbf{x}, $$ in which the minimum and the maximum are replaced with two single variables. We demonstrate the usefulness of that expression in the computation of orness and andness average values of certain aggregation functions. By generalizing our result to Riemann-Stieltjes integrals, we also provide a method for the calculation of certain expected values and distribution functions. [less ▲]

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See detailMultivariate integration of functions depending explicitly on the minimum and the maximum of the variables
Marichal, Jean-Luc UL

in De Baets, Bernard; Maes, Koen C.; Mesiar, Radko (Eds.) Proc. 4th Int. Summer School on Aggregation Operators and their Applications (AGOP 2007), Ghent, Belgium, July 9-14, 2007 (2007, July)

Detailed reference viewed: 67 (2 UL)
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See detailMultivariate normal approximation using Stein's method and Malliavin calculus
Nourdin, Ivan UL; Peccati, Giovanni UL; Anthony, Réveillac

in Annales de l'Institut Henri Poincare (B) Probability & Statistics (2010), 46(1), 45--58

Detailed reference viewed: 139 (2 UL)
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See detailMultivariate stable approximation in Wasserstein distance by Stein's method
Chen, Peng; Nourdin, Ivan UL; Xu, Lihu et al

E-print/Working paper (2019)

Detailed reference viewed: 33 (0 UL)
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See detailMultivariate Wavelet-Based Shape Preserving Estimation for Dependent Observations
Cosma, Antonio UL; Scaillet, Olivier; Von Sachs, Rainer

in Bernoulli (2007), 13(2), 301-329

We present a new approach on shape preserving estimation of probability distribution and density functions using wavelet methodology for multivariate dependent data. Our estimators preserve shape ... [more ▼]

We present a new approach on shape preserving estimation of probability distribution and density functions using wavelet methodology for multivariate dependent data. Our estimators preserve shape constraints such as monotonicity, positivity and integration to one, and allow for low spatial regularity of the underlying functions. As important application, we discuss conditional quantile estimation for financial time series data. We show that our methodology can be easily implemented with B-splines, and performs well in a finite sample situation, through Monte Carlo simulations. [less ▲]

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See detailA Multiverse Axiom Induction Framework
Weydert, Emil UL

in Symposium on the Theoretical Foundations of Mathematics III (2015, September 23)

A MULTIVERSE AXIOM INDUCTION FRAMEWORK The multiverse paradigm in set theory does not only reflect philosophical preferences, or set up a new playground for mathematical investigation, but it also offers ... [more ▼]

A MULTIVERSE AXIOM INDUCTION FRAMEWORK The multiverse paradigm in set theory does not only reflect philosophical preferences, or set up a new playground for mathematical investigation, but it also offers a powerful methodological tool for investigating the conceptual foundations of set theory by guiding the search for and the evaluation of new set-theoretic axioms or facts. The prototypical example is Friedman's Hyperuniverse Program (HUP). Our goal is to develop an abstract inferential framework generalizing the HUP whose (defeasible, inductive) inference methods are meant to identify or validate new axioms. We consider nonmonotonic consequence relations |~, parametrized by specifications of the multiverse and set-theoretic desiderata, which associate with any suitable ZFC + X new - not necessarily classically derivable - candidate truths. The desiderata could, for instance, consist of consistency conditions or maximization demands w.r.t. preorders over universes. There are a number of possible inductive strategies, but it doesn't seem that conceptual considerations at the level of set theory are sufficient to decide among them. The idea is therefore to also assess the inferential level and to use rationality postulates for nonmonotonic inference, heavily investigated within AI for modeling commonsense reasoning, to classify and evaluate such procedures. This is however a non-trivial task because of the special characteristics of axiom induction. [less ▲]

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See detailMultiverzameling
Perucca, Antonella UL

Article for general public (2019)

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See detailMultivoiced research with children: Exploring methodological issues in children's documentation of school projects
Siry, Christina UL; Mick, Carola UL

in Kress, Tricia M.; Curry Stephenson, Malott; Porfilio, Brad J. (Eds.) Challenging Status Quo Retrenchment: New Directions in Critical Research (2013)

In educational sciences, the gathering of video diaries as a form of "student standpoint research" has become increasingly important, and critical developments in educational ethnography support ... [more ▼]

In educational sciences, the gathering of video diaries as a form of "student standpoint research" has become increasingly important, and critical developments in educational ethnography support participatory frameworks of ethnographic research projects. Legitimizing research subjects' voices through their own data collection corresponds to ethical demands of democratic, dialogical, multivoiced research. In this chapter, we combine perspectives from two different research projects in primary schools in Luxembourg to shed light on the methodological and practical underpinnings of collectively gathered audio-visual ethnographic data. Drawing on video data collected by children in schools, we consider ways in which children’s documentation of their school experiences allows for dynamic approaches to space, context, time, reality and identity. As we analyze the coherence between this kind of multiperspectival data and the demands of ethnographic research we seek to demonstrate the extents to which such methods allow for an interpretation of institutionally embedded, highly performative and individualised data authored by the children themselves. [less ▲]

Detailed reference viewed: 64 (2 UL)
See detailMumford curves covering p-adic Shimura curves and their fundamental domains
Amoros Carafi, Laia UL; Milione, Piermarco

E-print/Working paper (2016)

We give an explicit description of fundamental domains associated to the p-adic uniformisa- tion of families of Shimura curves of discriminant Dp and level N ≥ 1, for which the one-sided ideal class ... [more ▼]

We give an explicit description of fundamental domains associated to the p-adic uniformisa- tion of families of Shimura curves of discriminant Dp and level N ≥ 1, for which the one-sided ideal class number h(D,N) is 1. The obtained results generalise those in [19, Ch. IX] for Shimura curves of discriminant 2p and level N = 1. The method we present here enables us to find Mumford curves covering Shimura curves, together with a free system of generators for the associated Schottky groups, p-adic good fundamental domains and their stable reduction- graphs. This is based on a detailed study of the modular arithmetic of an Eichler order of level N inside the definite quaternion algebra of discriminant D, for which we generalise classical results of Hurwitz [20]. As an application, we prove general formulas for the reduction-graphs with lengths at p of the considered families of Shimura curves. [less ▲]

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See detailMunc13 controls the location and efficiency of dense-core vesicle release in neurons.
van de Bospoort, Rhea; Farina, Margherita; Schmitz, Sabine UL et al

in The Journal of cell biology (2012), 199(6), 883-91

Neuronal dense-core vesicles (DCVs) contain diverse cargo crucial for brain development and function, but the mechanisms that control their release are largely unknown. We quantified activity-dependent ... [more ▼]

Neuronal dense-core vesicles (DCVs) contain diverse cargo crucial for brain development and function, but the mechanisms that control their release are largely unknown. We quantified activity-dependent DCV release in hippocampal neurons at single vesicle resolution. DCVs fused preferentially at synaptic terminals. DCVs also fused at extrasynaptic sites but only after prolonged stimulation. In munc13-1/2-null mutant neurons, synaptic DCV release was reduced but not abolished, and synaptic preference was lost. The remaining fusion required prolonged stimulation, similar to extrasynaptic fusion in wild-type neurons. Conversely, Munc13-1 overexpression (M13OE) promoted extrasynaptic DCV release, also without prolonged stimulation. Thus, Munc13-1/2 facilitate DCV fusion but, unlike for synaptic vesicles, are not essential for DCV release, and M13OE is sufficient to produce efficient DCV release extrasynaptically. [less ▲]

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See detailLe Mundaneum, un patrimoine inclassable
Schafer, Valerie UL

in Hermès (2013), 66

« Internet, une histoire belge ? » Cette affiche accueille le visiteur dans le hall du Mundaneum, au cœur de Mons, ville belge qui se prépare à devenir capitale européenne de la culture en 2015. Le slogan ... [more ▼]

« Internet, une histoire belge ? » Cette affiche accueille le visiteur dans le hall du Mundaneum, au cœur de Mons, ville belge qui se prépare à devenir capitale européenne de la culture en 2015. Le slogan est l’un des nombreux signes de l’actuelle volonté de réappropria- tion de l’histoire de l’Internet par les Européens, visant à sortir d’une vision trop centrée sur les États-Unis. Surtout, il inscrit d’emblée le projet d’Henri La Fontaine et Paul Otlet dans la lignée des utopies et travaux que le monde numérique intègre aujourd’hui à sa généalogie. Cette interprétation présentiste de l’histoire a permis d’enrichir la visibilité et le sens d’une institu- tion et d’un projet qui furent reconnus en leur temps pour des raisons différentes: de nos jours, le visiteur se déplace au Mundaneum pour y trouver l’histoire de l’Internet (par exemple grâce à l’exposition tempo- raire « Renaissance 2.0 ») plus peut-être que pour rendre hommage à Paul Otlet – que l’on qualifie de « père de la documentation» – et Henri La Fontaine – prix Nobel de la paix en 1913. Les interprétations et la réception à travers le temps de leur grandiose projet aux multiples ramifications éclairent les évolutions de notre regard sur la classification des savoirs. [less ▲]

Detailed reference viewed: 22 (0 UL)