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See detailWege zur Ernährungsdemokratie. Rückblick auf den 2. Vernetzungskongress der Ernährungsräte in Frankfurt.
Reckinger, Rachel UL; Schneider, Norry

Article for general public (2019)

Face à la mondialisation et l’intégration verticale des maillons de la chaîne alimentaire aux mains des géants multinationaux de l’industrie agroalimentaire, des initiatives alternatives se développent ... [more ▼]

Face à la mondialisation et l’intégration verticale des maillons de la chaîne alimentaire aux mains des géants multinationaux de l’industrie agroalimentaire, des initiatives alternatives se développent pour relocaliser et transformer la gouvernance de nos systèmes alimentaires. Au cœur de ce mouvement, on retrouve l’émergence de Conseils de Politique Alimentaire (en anglais : Food Policy Council). Il s’agit d’organes et de plateformes multi-acteurs qui ont pour objectif d’identifier et de proposer des solutions innovantes et transdisciplinaires en vue d’améliorer les systèmes alimentaires à l’échelle territoriale, en s’assurant qu’ils soient plus durables du point de vue environnemental et plus justes du point de vue social. Le Conseil alimentaire intègre des représentants des différents secteurs tout au long de la chaîne alimentaire (production, transformation, distribution, consommation et recyclage), mais également des acteurs de la gouvernance du système alimentaire (politique, administration, éducation, société civile, recherche). En Allemagne, ces initiatives foisonnent depuis que le premier Cpnseil de politique alimentaire ait été créé en 2016 à Cologne. Le 2ème congrès des initiatives germanophones, à Frankfort fin novembre 2018, a permis une meilleure compréhension de cet instrument participatif de promotion de la souveraineté alimentaire et du droit à l’alimentation et à la nutrition. Si vous voulez en savoir plus, merci de nous contacter : norry@cell.lu et rachel.reckinger@uni.lu [less ▲]

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See detailEffective Legal Remedies and Fair Trial in Tax and Time
Pantazatou, Aikaterini UL

in Haslehner, Werner; Kofler, Georg; Rust, Alexander (Eds.) Time and Tax - Issues in International, EU and Constitutional Law (2019)

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See detailBack to the roots of ARPANET and Internet history with Alexandre Serres
Schafer, Valerie UL; Cooper, Sarah UL; Paloque-Bergès, Camille

in Internet Histories: Digital Technology, Culture and Society (2019)

Alexandre Serres’ PhD, “Aux sources d’Internet: l’!emergence d’ARPANET” (“The origins of the Internet: the Emergence of ARPANET”), defended in 2000, is quite influential in Francophone research literature ... [more ▼]

Alexandre Serres’ PhD, “Aux sources d’Internet: l’!emergence d’ARPANET” (“The origins of the Internet: the Emergence of ARPANET”), defended in 2000, is quite influential in Francophone research literature and discourse on Internet histories. However, yet untranslated, it has remained little known in Anglophone scholarly circles. The results of this thesis, which strongly echoes other articles and interviews, that are part of this special issue on ARPANET, remain still relevant and valid and we have chosen to introduce the reader to the final part of Serres’ research – an inevitable choice within the 600 pages of this work. [less ▲]

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See detailFast and Robust Flight Altitude Estimation of Multirotor UAVs in Dynamic Unstructured Environments Using 3D Point Cloud Sensors
Bavle, Hriday; Sanchez Lopez, Jose Luis UL; de la Puente, Paloma et al

in Aerospace (2018), 5(3),

This paper presents a fast and robust approach for estimating the flight altitude of multirotor Unmanned Aerial Vehicles (UAVs) using 3D point cloud sensors in cluttered, unstructured, and dynamic indoor ... [more ▼]

This paper presents a fast and robust approach for estimating the flight altitude of multirotor Unmanned Aerial Vehicles (UAVs) using 3D point cloud sensors in cluttered, unstructured, and dynamic indoor environments. The objective is to present a flight altitude estimation algorithm, replacing the conventional sensors such as laser altimeters, barometers, or accelerometers, which have several limitations when used individually. Our proposed algorithm includes two stages: in the first stage, a fast clustering of the measured 3D point cloud data is performed, along with the segmentation of the clustered data into horizontal planes. In the second stage, these segmented horizontal planes are mapped based on the vertical distance with respect to the point cloud sensor frame of reference, in order to provide a robust flight altitude estimation even in presence of several static as well as dynamic ground obstacles. We validate our approach using the IROS 2011 Kinect dataset available in the literature, estimating the altitude of the RGB-D camera using the provided 3D point clouds. We further validate our approach using a point cloud sensor on board a UAV, by means of several autonomous real flights, closing its altitude control loop using the flight altitude estimated by our proposed method, in presence of several different static as well as dynamic ground obstacles. In addition, the implementation of our approach has been integrated in our open-source software framework for aerial robotics called Aerostack. [less ▲]

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See detailTowards trajectory planning from a given path for multirotor aerial robots trajectory tracking
Sanchez Lopez, Jose Luis UL; Olivares Mendez, Miguel Angel UL; Castillo Lopez, Manuel UL et al

in 2018 International Conference on Unmanned Aircraft Systems (ICUAS), Dallas 12-15 June 2018 (2018, June)

Planning feasible trajectories given desired collision-free paths is an essential capability of multirotor aerial robots that enables the trajectory tracking task, in contrast to path following. This ... [more ▼]

Planning feasible trajectories given desired collision-free paths is an essential capability of multirotor aerial robots that enables the trajectory tracking task, in contrast to path following. This paper presents a trajectory planner for multirotor aerial robots carefully designed considering the requirements of real applications such as aerial inspection or package delivery, unlike other research works that focus on aggressive maneuvering. Our planned trajectory is formed by a set of polynomials of two kinds, acceleration/deceleration and constant velocity. The trajectory planning is carried out by means of an optimization that minimizes the trajectory tracking time, applying some typical constraints as m-continuity or limits on velocity, acceleration and jerk, but also the maximum distance between the trajectory and the given path. Our trajectory planner has been tested in real flights with a big and heavy aerial platform such the one that would be used in a real operation. Our experiments demonstrate that the proposed trajectory planner is suitable for real applications and it is positively influencing the controller for the trajectory tracking task. [less ▲]

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See detail40 editions of ICSE: the ruby anniversary celebration
Bianculli, Domenico UL; Medvidović, Nenad; Rosenblum, David R.

Book published by self-published (2018)

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See detailA Real-Time 3D Path Planning Solution for Collision-Free Navigation of Multirotor Aerial Robots in Dynamic Environments
Sanchez Lopez, Jose Luis UL; Wang, Min UL; Olivares Mendez, Miguel Angel UL et al

in Journal of Intelligent and Robotic Systems (2018)

Deliberative capabilities are essential for intelligent aerial robotic applications in modern life such as package delivery and surveillance. This paper presents a real-time 3D path planning solution for ... [more ▼]

Deliberative capabilities are essential for intelligent aerial robotic applications in modern life such as package delivery and surveillance. This paper presents a real-time 3D path planning solution for multirotor aerial robots to obtain a feasible, optimal and collision-free path in complex dynamic environments. High-level geometric primitives are employed to compactly represent the situation, which includes self-situation of the robot and situation of the obstacles in the environment. A probabilistic graph is utilized to sample the admissible space without taking into account the existing obstacles. Whenever a planning query is received, the generated probabilistic graph is then explored by an A$^{\star}$ discrete search algorithm with an artificial field map as cost function in order to obtain a raw optimal collision-free path, which is subsequently shortened. Realistic simulations in V-REP simulator have been created to validate the proposed path planning solution, integrating it into a fully autonomous multirotor aerial robotic system. [less ▲]

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See detailZeitschrift für interkulturelle Germanistik
Amann, Wilhelm UL; Dembeck, Till UL; Heimböckel, Dieter UL et al

in ZiG (2018), 9(2),

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See detailAnmerkungen zu Erich Auerbachs Essay "Philologie der Weltliteratur"
Dembeck, Till UL; Heimböckel, Dieter UL

in Zeitschrift für Interkulturelle Germanistik (2018), 9(2), 187-188

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See detailLes regards experts sur l’Est en Allemagne et en Pologne : émergence, cristallisation et révision (1918-1972)
Bunout, Estelle UL

Doctoral thesis (2017)

La 1e Guerre mondiale fut le catalyseur de mutations sociales et techniques, qui suscitent de nouveaux besoins d’administration, matérialisés par l’émergence d’un nouveau groupe social: celui des experts ... [more ▼]

La 1e Guerre mondiale fut le catalyseur de mutations sociales et techniques, qui suscitent de nouveaux besoins d’administration, matérialisés par l’émergence d’un nouveau groupe social: celui des experts. Dans les États modernes allemands et polonais, un groupe particulier d’experts se détache, qui se spécialisent dans une thématique aux profondes racines culturelles : l’Est européen.Les changements de régime et de territoire entre 1918 et 1972 déstabilisent le cadre de référence des sociétés allemandes et polonaises, particulièrement entre 1939 et 1945. Cependant, l’historiographie des sciences de l’Est allemandes (Ostforschung) souligne les continuités personnelles, institutionnelles et conceptuelles fortes dans l’expertise de l’Est du « IIIe Reich » à l’Allemagne de l’Ouest. En Allemagne de l’Est et en Pologne, au contraire, le changement de régime après 1945 rend impossible toute continuité, mais la question de l’évolution de la pensée sur l’Est dans les cercles de l’expertise, qui eux se maintiennent, reste posée.En dépassant l’analyse de l’expertise en termes de subordination aux différents régimes politiques auxquels elle s’adresse, nous mettons en valeur les spécificités de l’expertise de l’Est. Elle se caractérise par un double ancrage dans l’imaginaire collectif et dans les pratiques scientifiques contemporaines, pour exprimer un but politique. Cet ancrage explique l’inertie dans les conceptions allemandes et polonaises de l’Est. L’approche comparatiste souligne tant la diversité des conceptions de l’Est, que les fonctions sociales comparables de l’Est, notamment celle d’ennemi et d’espace de projection nationale, passée et à venir [less ▲]

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