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See detailIntrusion detection on robot cameras using spatio-temporal autoencoders: A self-driving car application
Amrouche, Faouzi UL; Lagraa, Sofiane UL; Frank, Raphaël UL et al

in 91st IEEE Vehicular Technology Conference, VTC Spring 2020, Antwerp, Belgium, May 25-28, 2020 (2020)

Robot Operating System (ROS) is becoming more and more important and is used widely by developers and researchers in various domains. One of the most important fields where it is being used is the self ... [more ▼]

Robot Operating System (ROS) is becoming more and more important and is used widely by developers and researchers in various domains. One of the most important fields where it is being used is the self-driving cars industry. However, this framework is far from being totally secure, and the existing security breaches do not have robust solutions. In this paper we focus on the camera vulnerabilities, as it is often the most important source for the environment discovery and the decision-making process. We propose an unsupervised anomaly detection tool for detecting suspicious frames incoming from camera flows. Our solution is based on spatio-temporal autoencoders used to truthfully reconstruct the camera frames and detect abnormal ones by measuring the difference with the input. We test our approach on a real-word dataset, i.e. flows coming from embedded cameras of self-driving cars. Our solution outperforms the existing works on different scenarios. [less ▲]

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See detailIntrusion-Tolerant Autonomous Driving
Volp, Marcus UL; Verissimo, Paulo UL

in Proceedings of 2018 IEEE 21st International Symposium on Real-Time Distributed Computing (ISORC) (2018, May 29)

Fully autonomous driving is one if not the killer application for the upcoming decade of real-time systems. However, in the presence of increasingly sophisticated attacks by highly skilled and well ... [more ▼]

Fully autonomous driving is one if not the killer application for the upcoming decade of real-time systems. However, in the presence of increasingly sophisticated attacks by highly skilled and well equipped adversarial teams, autonomous driving must not only guarantee timeliness and hence safety. It must also consider the dependability of the software concerning these properties while the system is facing attacks. For distributed systems, fault-and-intrusion tolerance toolboxes already offer a few solutions to tolerate partial compromise of the system behind a majority of healthy components operating in consensus. In this paper, we present a concept of an intrusion-tolerant architecture for autonomous driving. In such a scenario, predictability and recovery challenges arise from the inclusion of increasingly more complex software on increasingly less predictable hardware. We highlight how an intrusion tolerant design can help solve these issues by allowing timeliness to emerge from a majority of complex components being fast enough, often enough while preserving safety under attack through pre-computed fail safes. [less ▲]

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See detailIntuitionistic basis for IOL
Parent, Xavier UL; van der Torre, Leon UL; Gabbay, Dov M. UL

in Hansson, Sven Ove (Ed.) David Makinson's outsanding contribution to non-classical logic (2014)

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See detailL’intuitonnisme
Sosoe, Lukas UL

in Thiaw-Po-Une, Ludivine (Ed.) Questions d’éthique contemporaine (2006)

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See detailL’invalidità (quasi) satisfattiva nel diritto del lavoro
Ratti, Luca UL

in Lavoro e diritto (2017)

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See detailInvariance in a class of operations related to weighted quasi-geometric means
Devillet, Jimmy UL; Matkowski, Janusz

in Fuzzy Sets and Systems (in press)

Let $I\subset (0,\infty )$ be an interval that is closed with respect to the multiplication. The operations $C_{f,g}\colon I^{2}\rightarrow I$ of the form \begin{equation*} C_{f,g}\left( x,y\right) =\left ... [more ▼]

Let $I\subset (0,\infty )$ be an interval that is closed with respect to the multiplication. The operations $C_{f,g}\colon I^{2}\rightarrow I$ of the form \begin{equation*} C_{f,g}\left( x,y\right) =\left( f\circ g\right) ^{-1}\left( f\left( x\right) \cdot g\left( y\right) \right) \text{,} \end{equation*} where $f,g$ are bijections of $I$ are considered. Their connections with generalized weighted quasi-geometric means is presented. It is shown that invariance\ question within the class of this operations leads to means of iterative type and to a problem on a composite functional equation. An application of the invariance identity to determine effectively the limit of the sequence of iterates of some generalized quasi-geometric mean-type mapping, and the form of all continuous functions which are invariant with respect to this mapping are given. The equality of two considered operations is also discussed. [less ▲]

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See detailInvariance of the BFV complex
Schatz, Florian UL

in Pacific Journal of Mathematics (2010), 248(2), 453-474

The BFV-formalism was introduced to handle classical systems, equipped with symmetries. It associates a differential graded Poisson algebra to any coisotropic submanifold S of a Poisson manifold (M, \Pi ... [more ▼]

The BFV-formalism was introduced to handle classical systems, equipped with symmetries. It associates a differential graded Poisson algebra to any coisotropic submanifold S of a Poisson manifold (M, \Pi). However the assignment (coisotropic submanifold) -> (differential graded Poisson algebra) is not canonical, since in the construction several choices have to be made. One has to fix: 1. an embedding of the normal bundle NS of S into M as a tubular neighbourhood, 2. a connection on NS and 3. a special element Omega. We show that different choices of a connection and an element Omega -- but with the tubular neighbourhood fixed -- lead to isomorphic differential graded Poisson algebras. If the tubular neighbourhood is changed too, invariance can be restored at the level of germs. [less ▲]

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See detailAn invariance principle under the total variation distance
Poly, Guillaume Joseph UL; Nourdin, Ivan UL

in Stochastic Processes & Their Applications (2013)

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See detailInvariance principles for homogeneous sums of free random variables
Deya, Aurélien; Nourdin, Ivan UL

in Bernoulli (2014), 20(2), 586-603

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See detailInvariance principles for homogeneous sums: universality of Gaussian Wiener chaos
Nourdin, Ivan UL; Peccati, Giovanni UL; Reinert, Gesine

in Annals of Probability (2010), 38(5), 1947--1985

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See detailInvariant connections and PBW theorem for Lie groupoid pairs
Laurent-Gengoux, Camille; Voglaire, Yannick UL

E-print/Working paper (2015)

Given a closed wide Lie subgroupoid $\mathbf{A}$ of a Lie groupoid $\mathbf{L}$, i.e. a Lie groupoid pair, we interpret the associated Atiyah class as the obstruction to the existence of $\mathbf{L ... [more ▼]

Given a closed wide Lie subgroupoid $\mathbf{A}$ of a Lie groupoid $\mathbf{L}$, i.e. a Lie groupoid pair, we interpret the associated Atiyah class as the obstruction to the existence of $\mathbf{L}$-invariant fibrewise affine connections on the homogeneous space $\mathbf{L}/\mathbf{A}$. For Lie groupoid pairs with vanishing Atiyah class, we show that the left $\mathbf{A}$-action on the quotient space $\mathbf{L}/\mathbf{A}$ can be linearized. In addition to giving an alternative proof of a result of Calaque about the Poincare-Birkhoff-Witt map for Lie algebroid pairs with vanishing Atiyah class, this result specializes to a necessary and sufficient condition for the linearization of dressing actions, and gives a clear interpretation of the Molino class as an obstruction to simultaneous linearization of all the monodromies. In the course of the paper, a general theory of connections and connection forms on Lie groupoid principal bundles is developed. Also, a computational substitute to the adjoint action (which only exists "up to homotopy") is suggested. [less ▲]

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See detailInvariant dimensions and maximality of geometric monodromy action
Hui, Chun Yin UL

E-print/Working paper (2015)

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See detailInvariant Observer Applied to Anaerobic Digestion Model
Chaib Draa, Khadidja UL; Voos, Holger UL; Alma, Marouane et al

in IEEE 21st International Conference on Emerging Technologies and Factory Automation (ETFA), Berlin, Germany, 2016 (2016, September)

In this note, we design an invariant observer for a two step (acidogenesis-methanogenesis) mass balance nonlinear model, in order to estimate simultaneously all bacteria and substrate concentrations found ... [more ▼]

In this note, we design an invariant observer for a two step (acidogenesis-methanogenesis) mass balance nonlinear model, in order to estimate simultaneously all bacteria and substrate concentrations found in the anaerobic digestion process. The particularity of the designed observer is the use of only the methane flow rate which is cheap to measure and commonly measured online even at industrial scale. [less ▲]

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See detailInvariant Preservation in Interative Modelling (Extended Version)
Amrani, Moussa UL; Lúcio, Lévi; Syriani, Eugene et al

Report (2012)

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See detailInvariant Preservation In Iterative Modeling
Lucio, Levi; Syriani, Eugene; Amrani, Moussa UL et al

in Workshop on Models And Evolution, co-located with MoDELS 2012 (2012)

In a Model-Driven Development project, models are typically built iteratively to better satisfy a set of requirements. Therefore it is crucial to guarantee that one iteration of a model evolution does not ... [more ▼]

In a Model-Driven Development project, models are typically built iteratively to better satisfy a set of requirements. Therefore it is crucial to guarantee that one iteration of a model evolution does not hinder the previous version. In this paper, we focus on invariant preservation of behavioral models expressed in Algebraic Petri Nets. The theory developed is applied to a Multi-Level Security File System modeled iteratively. We also discuss how this approach can be applied on Domain-Specific Languages that are translated to Algebraic Petri Nets. [less ▲]

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See detailInvasive fungal infection and impaired neutrophil killing in human CARD9 deficiency.
Drewniak, Agata; Gazendam, Roel P.; Tool, Anton T. J. et al

in Blood (2013), 121(13), 2385-2392

Caspase recruitment domain-containing protein 9 (CARD9) is an adaptor molecule in the cytosol of myeloid cells, required for induction of T-helper cells producing interleukin-17 (Th17 cells) and important ... [more ▼]

Caspase recruitment domain-containing protein 9 (CARD9) is an adaptor molecule in the cytosol of myeloid cells, required for induction of T-helper cells producing interleukin-17 (Th17 cells) and important in antifungal immunity. In a patient suffering from Candida dubliniensis meningoencephalitis, mutations in the CARD9 gene were found to result in the loss of protein expression. Apart from the reduced numbers of CD4(+) Th17 lymphocytes, we identified a lack of monocyte-derived cytokines in response to Candida strains. Importantly, CARD9-deficient neutrophils showed a selective Candida albicans killing defect with abnormal ultrastructural phagolysosomes and outgrowth of hyphae. The neutrophil killing defect was independent of the generation of reactive oxygen species by the reduced NAD phosphate oxidase system. Taken together, this demonstrates that human CARD9 deficiency results in selective defect in the host defense against invasive fungal infection, caused by an impaired phagocyte killing. [less ▲]

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See detailInventar des Archivs der Stadt St. Vith, Streitsache „Emmelser Wald“ (1897-2008)
Sproten, Vitus UL; Herrebout, Els

Book published by Archives de l'État en Belgique (2018)

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See detailInventing Diseases: Kleptomania, Agoraphobia and Resistance to Modernity
Lenz, Thomas UL; MagShamhráin, Rachel

in Society (2012), 49(3), 279-283

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See detailInventing Luxembourg. Representations of the Past, Space and Language from the Nineteenth to the Twenty-First Century
Kmec, Sonja UL; Majerus, Benoît UL; Margue, Michel UL et al

Book published by Brill, (2010)

This book is divided into three main parts, dealing with historical narration, territory and language. Historical narrations have played a key role in ‘inventing’ national, gendered, ethnic and racial ... [more ▼]

This book is divided into three main parts, dealing with historical narration, territory and language. Historical narrations have played a key role in ‘inventing’ national, gendered, ethnic and racial identities, and in presenting deterministic and essentialist conceptions of time and human action. The importance of (abstract and social) space in the production of history and the equal importance of the temporal dimension in the production of geography have been underlined by Doreen Massey. Her concept of ‘space/time’ abolishes the binary opposition of time and space and defines them as interrelated.This double process of spatial and temporal construction of identity is analysed here in a diachronic way from the late nineteenth to the early twenty-first century, comprising the period traditionally considered as key to nation-building processes as well as current trends towards de-and renationalisation. The scale of this study is limited to discourse in Luxembourg and concerns the production of internal and external borders. Part One retraces the ‘genealogy’ of the master narrative from the early modern period and examines its absorption into public expressions of political self-identity after 1919. It then looks at the dissemination of the master narrative by means of textbooks, celebrations, literature and popular culture. Finally, it highlights the transformations of this narrative, the opening of fields of possibilities and new trends. Part Two examines how representations of space complement the master narrative by embedding past experiences in a certain territory and within certain defined borders. Territorial delimitations are projected back in time and legitimised by reference to the same bounded space in the past. Two different discursive strategies for the creation of ‘collective identity’ are distinguished: the centripetal and the centrifugal. The former characterises the national master narrative, while the latter has more of a supranational, Great Regional or European focus. Part Three traces the evolution of Luxembourgish, which still is in full nationalisation mode. Once again, the watershed here seems to have come in 1919, when the language began to be seen not as a mere dialect of German, but as a distinctly different tongue. On first sight, a native language seems to be a constant of human existence, in the sense both of history and of an individual’s life. As its title indicates, however, this book seeks to deconstruct the notion of a natural language and focuses on the act of creation and on the social actors involved in this process. The evolution of the language is, moreover, placed in a broad context. Th e gradual codification of Luxembourgish was part of a larger movement which aimed to give the comparatively young state a sense of substance and meaning. As in most European nationstates, the state of Luxembourg existed before any systematic attempts at nation-building were undertaken. It was—and still is—heavily involved in this process. Thus, in recent years, Luxembourg has created new national institutions, such as the Central Bank in 1998, the University of Luxembourg in 2003, and the establishment of several Luxembourg-related research institutes between 1995 and 2008. This book investigates whether this nationalisation tendency may be confirmed by the study of the representations of the past, the territory and the language from the mid-nineteenth century to the present day. [less ▲]

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See detail« L'invention » de l'immigré. La psychiatrie belge face à la migration maghrébine dans les années 1960 et 1970
Majerus, Benoît UL; Richel, Julie

in Mouvement Social (2013), n° 242(1), 31--44

Detailed reference viewed: 279 (17 UL)