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See detailRaising the Achievement of all Learners in Inclusive Education Project: Rosmini and Sereni
Limbach-Reich, Arthur UL

Scientific Conference (2016, December)

Detailed reference viewed: 106 (2 UL)
See detailNuclear Energy for Peaceful Purposes:
Al Hajjaji, Shams Al Din UL

Presentation (2016, December)

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See detailEine innovative Stahlverbundlösung für komplexe innerstädtische Bauprojekte
Schäfer, Markus UL; Radermacher, Christoph; Braun, Matthias et al

in Stahlbau - Nachrichten (2016), 04/16

The real estate project KONS encountered a two and a half year process of demolition of an existing building and construction of a new building complex in a central, urban location of Luxembourg City ... [more ▼]

The real estate project KONS encountered a two and a half year process of demolition of an existing building and construction of a new building complex in a central, urban location of Luxembourg City opposite of the main railway station. Thereby the ambitious specifications of the investor as well as the requirements of the local authorities could be met only through a comprehensive and intelligent planning process. The complex interrelation between logistics and construction management processes, detailing and overall economic assessment found the solution of steel-composite design highly performant and efficient in every aspect. [less ▲]

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See detailCargo-Kulte. Magie im Zeitalter der Globalisierung.
Amann, Wilhelm UL

in Zeitschrift für Interkulturelle Germanistik (2016), 2(2016), 80-89

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See detailDiscrete Pompeiu problem on the plain
Kiss, Gergely UL

Presentation (2016, December)

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See detailGraph-based Software Knowledge: Storage and Semantic Querying of Domain Models for Run-Time Adaptation
Hochgeschwender, Nico UL; Schneider, Sven; Voos, Holger UL et al

in IEEE International Conference on Simulation, Modeling, and Programming for Autonomous Robots SIMPAR, San Francisco, Dec 2016 (2016, December)

Software development for robots is a knowledge intensive exercise. To capture this knowledge explicitly and formally in the form of various domain models, roboticists have recently employed model-driven ... [more ▼]

Software development for robots is a knowledge intensive exercise. To capture this knowledge explicitly and formally in the form of various domain models, roboticists have recently employed model-driven engineering (MDE) approaches. However, these models are merely seen as a way to support humans during the robot's software design process. We argue that the robots themselves should be first-class consumers of this knowledge to autonomously adapt their software to the various and changing run-time requirements induced, for instance, by the robot's tasks or environment. Motivated by knowledge-enabled approaches, we address this problem by employing a graph-based knowledge representation that allows us not only to persistently store domain models, but also to formulate powerful queries for the sake of run time adaptation. We have evaluated our approach in an integrated, real-world system using the neo4j graph database and we report some lessons learned. Further, we show that the graph database imposes only little overhead on the system's overall performance. [less ▲]

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See detailIntegration of meta-omics data: approaches and applications
Wilmes, Paul UL

Scientific Conference (2016, December)

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See detailSociability-Driven User Recruitment in Mobile Crowdsensing Internet of Things Platforms
Fiandrino, Claudio UL; Kantarci, Burak; Anjomshoa, Fazel et al

in IEEE Global Communications Conference (GLOBECOM), Washington, DC, USA, 2016 (2016, December)

The Internet of Things (IoT) paradigm makes the Internet more pervasive, interconnecting objects of everyday life, and is a promising solution for the development of next- generation services. Smart ... [more ▼]

The Internet of Things (IoT) paradigm makes the Internet more pervasive, interconnecting objects of everyday life, and is a promising solution for the development of next- generation services. Smart cities exploit the most advanced information technologies to improve and add value to existing public services. Applying the IoT paradigm to smart cities is fundamental to build sustainable Information and Communication Technology (ICT) platforms. Having citizens involved in the process through mobile crowdsensing (MCS) techniques unleashes potential benefits as MCS augments the capabilities of the platform without additional costs. Recruitment of participants is a key challenge when MCS systems assign sensing tasks to the users. Proper recruitment both minimizes the cost and maximizes the return, such as the number and the accuracy of accomplished tasks. In this paper, we propose a novel user recruitment policy for data acquisition in mobile crowdsensing systems. The policy can be employed in two modes, namely sociability-driven mode and distance-based mode. Sociability stands for the willingness of users in contributing to sensing tasks. Furthermore, we propose a novel metric to assess the efficiency of any recruitment policy in terms of the number of users contacted and the ones actually recruited. Performance evaluation, conducted in a real urban environment for a large number of participants, reveals the effectiveness of sociability-driven user recruitment as the average number of recruited users improves by at least a factor of two. [less ▲]

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See detailChronique Administration européenne Principes du droit administratif européen
Neframi, Eleftheria UL

in Revue Française d'Administration Publique (2016)

Detailed reference viewed: 87 (1 UL)
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See detailUncertainty quantification for soft tissue biomechanics
Hauseux, Paul UL; Hale, Jack UL; Bordas, Stéphane UL

Poster (2016, December)

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See detailShear strength and stiffness degradation of geomaterials in cyclic loading
Pytlik, Robert Stanislaw UL; Van Baars, Stefan UL

in Soils and Rocks (2016), 39(3), 273-283

Cyclic loading on civil structures can lead to a reduction of strength and stiffness in the loaded materials. The life span of many cyclically loaded structures such as wind turbines, high-speed train ... [more ▼]

Cyclic loading on civil structures can lead to a reduction of strength and stiffness in the loaded materials. The life span of many cyclically loaded structures such as wind turbines, high-speed train tracks and bridges strongly depends on the foundation. The soils and rocks in the foundation can be subjected to cyclic loads from natural and human sources. In order to evaluate the fatigue behaviour of geomaterials, this paper presents static and cyclic triaxial test results for several geomaterials. It was concluded that cyclic loading on different geomaterials can cause different types of effects. The shear strength of cohesionless crumbled limestone increases during cyclic loading; while for cohesive materials, such as gypsum and mortar, the strength decreases. The strength decrease can be seen as a degradation of the cohesion. The most significant factor in the cohesion reduction was found to be the number of applied cycles. It was also noticed that the friction angle for sands does not reduce under cyclic loading. A fatigue limit was not found for cohesive geomaterials; neither a dependence of the strength reduction on the cyclic loading ratios. [less ▲]

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See detailOn the Insecurity of a Method for Providing Secure and Private Fine-Grained Access to Outsourced Data
Rial, Alfredo UL

in Abstract book of 2016 IEEE 8th International Conference on Cloud Computing Technology and Science (CloudCom) (2016, December)

The protection of sensitive data stored in the cloud is paramount. Among the techniques proposed to provide protection, attribute-based access control, which frequently uses ciphertext-policy attribute ... [more ▼]

The protection of sensitive data stored in the cloud is paramount. Among the techniques proposed to provide protection, attribute-based access control, which frequently uses ciphertext-policy attribute-based encryption (CPABE), has received a lot of attention in the last years. Recently, Jahan et al.~(IEEE 40th Conference on Local Computer Networks, 2015) propose a scheme based on CPABE where users have reading and writing access to the outsourced data. We analyze the scheme by Jahan et al.\ and we show that it has several security vulnerabilities. For instance, the cloud server can get information about encrypted messages by using a stored ciphertext and an update of that ciphertext. As another example, users with writing access are able to decrypt all the messages regardless of their attributes. We discuss the security claims made by Jahan et al.\ and point out the reasons why they do not hold. We also explain that existing schemes can already provide the advantages claimed by Jahan et al. [less ▲]

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See detailThe influence of superposition and eccentric loading on the bearing capacity of shallow foundations
Van Baars, Stefan UL

in Computations and Materials in Civil Engineering (2016), 1(3), 121-131

In 1920 Prandtl published an analytical solution for the bearing capacity of a centric loaded strip footing on a weightless in-finite half-space. Reissner (1924) extended this solution for a surrounding ... [more ▼]

In 1920 Prandtl published an analytical solution for the bearing capacity of a centric loaded strip footing on a weightless in-finite half-space. Reissner (1924) extended this solution for a surrounding surcharge and Keverling Buisman (1940) for the soil weight. Terzaghi (1943) wrote this as a superposition of three separate bearing capacity components for the cohesion, surcharge and soil-weight. The first question is to what ex-tent the currently used components are correct. The second question is to what extent the superposition is correct, because the failure mechanisms for these three components are not the same. A number of finite element calculations show that there is indeed an error, which is luckily not too large and leads to predictions on the safe side. Meyerhof (1953) extended the equation of Terzaghi with correction factors for the shape of the footing and the inclination of the load. For eccentric loading however, there are no correction factors. The common practice is to reduce the contact area of the foundation such that its centroid coincides with that of the load, which means that, the area of the foundation outside the effective area, is completely neglected. Therefore the third question is, if this reduction of the foundation area is an accurate method to describe the reduction of the bearing capacity due to eccentric loading. A number of finite element calculations show that this is indeed the case. [less ▲]

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See detailA three-dimensional movement analysis of the spike in fistball
Bund, Andreas UL; Ghorbani, Saeed; Rathjens, Franziska

in Sports (2016), 4(4), 1-12

Due to its relevancy to point scoring, the spike is considered as one of the most important skills in fistball. Biomechanical analyses of this sport are very rare. In the present study, we performed a ... [more ▼]

Due to its relevancy to point scoring, the spike is considered as one of the most important skills in fistball. Biomechanical analyses of this sport are very rare. In the present study, we performed a three-dimensional kinematic analysis of the fistball spike, which helps to specify performance parameters on a descriptive level. Recorded by four synchronized cameras (120 Hz) and linked to the motion capture software Simi Motion® 5.0, three female fistball players of the second German league (24–26 years, 1.63–1.69 m) performed several spikes under standardized conditions. Results show that the segment velocities of the arm reached their maximum successively from proximal to distal, following the principle of temporal coordination of single impulses. The wrist shows maximum speed when the fist hits the ball. The elbow joint angle performs a rapid transition from a strong flexion to a (almost) full extension; however, the extension is completed after the moment of ball impact. In contrast, the shoulder joint angle increases almost linearly until the fistball contact and decreases afterward. The findings can be used to optimize the training of the spike. [less ▲]

Detailed reference viewed: 186 (2 UL)
See detailErinnerungen an die Zwangsrekrutierung im Großherzogtum Luxemburg
Klos, Eva Maria UL

in Stroh, Frédéric; Quadflieg, Peter M. (Eds.) L’incorporation de force dans les territoires annexés par le IIIe Reich. Die Zwangsrekrutierung in den vom Dritten Reich annektierten Gebieten 1939-1945 (2016, December)

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See detailLinear identification of nonlinear systems: A lifting technique based on the Koopman operator
Mauroy, Alexandre UL; Goncalves, Jorge UL

in Proceedings of the 55th IEEE Conference on Decision and Control (2016, December)

We exploit the key idea that nonlinear system identification is equivalent to linear identification of the socalled Koopman operator. Instead of considering nonlinear system identification in the state ... [more ▼]

We exploit the key idea that nonlinear system identification is equivalent to linear identification of the socalled Koopman operator. Instead of considering nonlinear system identification in the state space, we obtain a novel linear identification technique by recasting the problem in the infinite-dimensional space of observables. This technique can be described in two main steps. In the first step, similar to a component of the Extended Dynamic Mode Decomposition algorithm, the data are lifted to the infinite-dimensional space and used for linear identification of the Koopman operator. In the second step, the obtained Koopman operator is “projected back” to the finite-dimensional state space, and identified to the nonlinear vector field through a linear least squares problem. The proposed technique is efficient to recover (polynomial) vector fields of different classes of systems, including unstable, chaotic, and open systems. In addition, it is robust to noise, well-suited to model low sampling rate datasets, and able to infer network topology and dynamics. [less ▲]

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See detailTowards Characterizing Bluetooth Discovery in a Vehicular Context
Bronzi, Walter UL; Derrmann, Thierry UL; Castignani, German UL et al

in Vehicular Networking Conference (VNC), 2016 IEEE (2016, December)

Bluetooth has, in recent years, gained more and more momentum. New commodity objects and wearables im- plementing Bluetooth Smart technology (Low Energy) are re- leased everyday. In particular, the ever ... [more ▼]

Bluetooth has, in recent years, gained more and more momentum. New commodity objects and wearables im- plementing Bluetooth Smart technology (Low Energy) are re- leased everyday. In particular, the ever increasing number of discoverable devices both inside and outside a populated area gives us an encouraging insight on future research directions for this technology. In this paper, based on a sensing system developed as an Android application, we evaluate Bluetooth Classic and Low Energy discovery characteristics from a vehic- ular perspective. By recording information about devices nearby (e.g. the number of discovered devices, their signal strength, manufacturer information) and the GPS location we can derive interesting information about a driver’s situation, as well as his/her environment. Presented results indicate that the amount of discovered devices and signal strengths are dependent on velocity and road category. Finally, future work and discussions address potential use-case applications based only on Bluetooth discovery, such as low energy and privacy friendly road and traffic context awareness. The sensing system used in this article is free online under the MIT License. [less ▲]

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See detailTHE PRIVILEGE AGAINST SELF-INCRIMINATION A Chameleon of Criminal Procedure
Lamberigts, Stijn UL

in New Journal of European Criminal Law (2016), 7(4), 418-438

This article revisits the different justifications of the privilege against self-incrimination and examines two topical issues, the relation between the privilege and documentary evidence and the ... [more ▼]

This article revisits the different justifications of the privilege against self-incrimination and examines two topical issues, the relation between the privilege and documentary evidence and the applicability of the privilege to corporations, in light of these justifications. Although the Presumption of Innocence Directive has recently addressed these two issues, several lingering uncertainties remain. [less ▲]

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See detailTowards Integration on Colored Supermanifolds
Poncin, Norbert UL

in Banach Center Publications (2016, December), 110

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See detailTPTP and Beyond: Representation of Quantified Non-Classical Logics
Wisniewski, Max; Steen, Alexander UL; Benzmüller, Christoph UL

in Benzmüller, Christoph; Otten, Jens (Eds.) ARQNL 2016. Automated Reasoning in Quantified Non-Classical Logics (2016, December)

Detailed reference viewed: 34 (0 UL)

 

 
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