Last 7 days
Bookmark and Share    
Full Text
Peer Reviewed
See detailComparison of design for composite beams in steel and concrete according to Eurocode 4 and Chinese Design Codes
Zhang, Qingjie UL; Schäfer, Markus UL

in XI Conference on Steel and Composite Construction (2017, November 23)

Parallel to the investigation in the second generation of Eurocodes, the Chinese design standards are also updated. At 01/12/2016, a new Chinese Code for the design of composite structures JGJ138-2016 was ... [more ▼]

Parallel to the investigation in the second generation of Eurocodes, the Chinese design standards are also updated. At 01/12/2016, a new Chinese Code for the design of composite structures JGJ138-2016 was put in practice to replace the old JGJ138-2001. Benefit from the vast experience of composite structure applications blooming recently in Chinese, the new code covers much wider topics and is more comparable to Eurocodes 4. Generally, both codes cover topics of composite beams and columns, composite slabs and composite connections. However, JGJ138-2016 covers also the design of composite shear walls, while Eurocode 4 considers more about durability and time effects. It is necessary to compare the materials used for both of codes. In this article, it covers comparison of the mechanic properties such as elastic modulus, characteristic strength and design strength. The analysis includes concrete, reinforcement, and structural steel. The main comparison is the design procedure of composite columns. The application range of the codes will be pointed out first. Both codes allow the design of concrete encased sections and concrete filled rectangular and circular tubes. However different limitations on cross-section sizes and materials can be found. Eurocode 4 represents three different design methods: the simplified method for centric loading, based on the buckling curves; the general method based on 2nd order calculation for action effects and N-M interaction for the determination of resistances; as well as the non-linear method based on stress-strain limitation of material and FE-Analysis. Chinese code gives a simplified method of the calculation of column resistance for centric and eccentric loading. Also the impact of second-order effect are to proof if needed. According to the EN1994-1-1 the impact of creep is to consider for the denervation of the bending stiffness and for ideal buckling resistance and non-dimensional slenderness. JGJ138-2016 do not consider impact of creep for the design. Besides, JGJ138-2016 includes also design for seismic situation. The axial cross-section resistance and normal force-moment interaction curves (N-M curves) will be compared through theoretical analysis and parameter studies. JGJ138-2016 considers mainly transversal shear resistances, while Eurocode 4 further considers shear connection, load introduction and longitudinal shear outside the areas of load introduction. The design shear resistance will be compared in general and within parameter study. [less ▲]

Detailed reference viewed: 16 (1 UL)
See detailKonventionen und Tabus? Deutschlandbilder in Lüttich im langen 19. Jahrhundert
Brüll, Christoph UL

Scientific Conference (2017, November 22)

Detailed reference viewed: 9 (0 UL)
Full Text
Peer Reviewed
See detailMarkers of lesser importance in lecture discourse
Deroey, Katrien UL

Scientific Conference (2017, November 22)

This paper surveys how less important lecture discourse is marked lexicogrammatically in the British Academic Spoken English (BASE) corpus (Deroey and Taverniers, 2012; Deroey, 2014). Such interpersonal ... [more ▼]

This paper surveys how less important lecture discourse is marked lexicogrammatically in the British Academic Spoken English (BASE) corpus (Deroey and Taverniers, 2012; Deroey, 2014). Such interpersonal, metadiscursive devices combine discourse organization with evaluation along a ‘parameter of importance or relevance’ (Thompson and Hunston, 2000: 24). They can help students discern the relative importance of points and so may aid lecture comprehension, note-taking and retention. The markers were first retrieved manually from 40 lectures and then using Sketch Engine from all 160 lectures. They fell into five categories: (i) message status markers (e.g. not pertinent, joke, anyway); (ii) topic treatment markers (e.g. briefly, not look at, for a moment); (iii) lecturer knowledge markers (e.g. not know, not remember); (iv) assessment markers (e.g. not examine, not learn); and (v) attention- and note-taking markers (e.g. ignore, not copy down). This study illustrates the challenge of identifying and quantifying pragmatic features in academic discourse. Few markers explicitly evaluated discourse as being unimportant (e.g. not pertinent) and few had an inherent meaning of lesser importance (e.g. incidentally). Instead, they depended rather heavily on pragmatic interpretation to achieve their effect and could generally be viewed as ‘muted signals’ (Swales and Burke, 2003: 17), expressing importance implicitly or cumulatively (cf. Hunston, 2011). Hence, Hunston’s observation that ‘much evaluative meaning is not obviously identifiable, as it appears to depend on immediate context and on reader assumptions about value’ (2004: 157) is particularly pertinent here. References Deroey, K. L. B. (2014). ‘Anyway, the point I'm making is’: Lexicogrammatical relevance marking in lectures. In L. Vandelanotte, D. Kristin, G. Caroline, & K. Ditte (Eds.), Recent Advances in Corpus Linguistics: Developing and Exploiting Corpora (pp. 265-291). Amsterdam/New York: Rodopi. Deroey, K. L. B., & Taverniers, M. (2012). ‘Ignore that' cause it's totally irrelevant’: Marking lesser relevance in lectures. Journal of Pragmatics, 44(14), 2085-2099. Hunston, S. (2004). Counting the uncountable: Problems of identifying evaluation in a text and in a corpus. In A. Partington, J. Morley, & L. Haarman (Eds.), Corpora and discourse (pp. 157-188). Bern: Peter Lang. Hunston, S. (2011). Corpus approaches to evaluation: phraseology and evaluative language (Vol. 13). New York: Routledge. Swales, J. M., & Burke, A. (2003). " Its really fascinating work": Differences in Evaluative Adjectives across Academic Registers. Language and Computers, 46(1), 1-18.  Thompson, G., & Hunston, S. (2000). Evaluation: An introduction. In Hunston, S., & Thompson, G. (Eds.), Evaluation in text: Authorial stance and the construction of discourse (pp. 1-27). Oxford: OUP. [less ▲]

Detailed reference viewed: 28 (0 UL)
Full Text
Peer Reviewed
See detailA Perspective of Security for Mobile Service Robots
Cornelius, Gary Philippe UL; Hochgeschwender, Nico UL; Voos, Holger UL et al

in Iberian Robotics Conference, Seville, Spain, 2017 (2017, November 22)

Future homes will contain Mobile Service Robots (MSR) with diverse functionality. MSRs act in close proximity to humans and have the physical capabilities to cause serious harm to their environment ... [more ▼]

Future homes will contain Mobile Service Robots (MSR) with diverse functionality. MSRs act in close proximity to humans and have the physical capabilities to cause serious harm to their environment. Furthermore, they have sensors that gather large amounts of data, which might contain sensitive information. A mobile service robot’s physical capabilities are controlled by networked computers susceptible to faults and intrusions. The proximity to humans and the possibility to physically interact with them makes it critical to think about the security issues of MSRs. In this work, we investigate possible attacks on mobile service robots. We survey adversary motivations to attack MSRs, analyse threat vectors and list different available defence mechanisms against attacks on MSRs. [less ▲]

Detailed reference viewed: 67 (35 UL)
Full Text
See detailPan-European pension schemes – a way to close the pension gap
Tkalec, Igor UL

Article for general public (2017)

The pan-European Personal Pension is the Commission led proposal to close the pension gap in a cost-effective manner. Its benefits spread across multiple fronts: improving pension system sustainability ... [more ▼]

The pan-European Personal Pension is the Commission led proposal to close the pension gap in a cost-effective manner. Its benefits spread across multiple fronts: improving pension system sustainability, strengthening current fiscal and macroeconomic coordination framework, unlock long-term investment, and contributing to deeper economic integration. [less ▲]

Detailed reference viewed: 6 (0 UL)
Full Text
Peer Reviewed
See detailEvasive Maneuvering for UAVs: An MPC Approach
Castillo Lopez, Manuel UL; Olivares Mendez, Miguel Angel UL; Voos, Holger UL

in ROBOT'2017 - Third Iberian Robotics Conference, Sevilla, Spain, 2017 (2017, November 22)

Flying autonomously in a workspace populated by obstacles is one of the main goals when working with Unmanned Aerial Vehicles (UAV). To address this challenge, this paper presents a model predictive ... [more ▼]

Flying autonomously in a workspace populated by obstacles is one of the main goals when working with Unmanned Aerial Vehicles (UAV). To address this challenge, this paper presents a model predictive flight controller that drives the UAV through collision-free trajectories to reach a given pose or follow a way-point path. The major advantage of this approach lies on the inclusion of three-dimensional obstacle avoidance in the control layer by adding ellipsoidal constraints to the optimal control problem. The obstacles can be added, moved and resized online, providing a way to perform waypoint navigation without the need of motion planning. In addition, the delays of the system are considered in the prediction by an experimental first order with delay model of the system. Successful experiments in 3D path tracking and obstacle avoidance validates its effectiveness for sense-and-avoid and surveillance applications presenting the proper structure to extent its autonomy and applications. [less ▲]

Detailed reference viewed: 29 (4 UL)
See detailEntre vérité et dire du vrai. Ein geschichtstheoretischer Grenzgang
Fickers, Andreas UL

in Fickers, Andreas (Ed.) Jeux sans frontières? Grenzgänge der Geschichtswissenschaft (2017)

This article reflects on the borderline between factual and fictional storytelling in history, arguing that the different narrative formats of historical storytelling are based on narrative conventions ... [more ▼]

This article reflects on the borderline between factual and fictional storytelling in history, arguing that the different narrative formats of historical storytelling are based on narrative conventions that play with rhetorical and stylistic strategies of authentification and objectivation. [less ▲]

Detailed reference viewed: 3 (0 UL)
Full Text
See detailSexualität und Behinderung
LIMBACH-REICH, Arthur; Limbach-Reich, Arthur UL

Speeches/Talks (2017)

Detailed reference viewed: 21 (2 UL)
See detailCross-border access to electronic evidence: Policy and legislative challenges
Ligeti, Katalin; Robinson, Gavin UL

in Carrera, Sergio; Mitsilegas, Valsamis (Eds.) Constitutionalising the Security Union: Effectiveness, rule of law and rights in countering terrorism and crime (2017)

Detailed reference viewed: 16 (4 UL)
See detailDemystifying multilingualism at work, at home and at school
Kirsch, Claudine UL

Scientific Conference (2017, November 21)

What is multilingualism? How has our understanding of multilingualism, language learning and developing several languages in children at home and at school changed over the last century? Building on the ... [more ▼]

What is multilingualism? How has our understanding of multilingualism, language learning and developing several languages in children at home and at school changed over the last century? Building on the work of several leading scholars such as García, Creese and Blackledge, Li Wei, and Baker as well as on my own research, this interactive presentation will deconstruct traditional understandings of multilingualism and show that translanguaging, the use of one’s entire semiotic repertoire for communication, meaning-making and learning, is a normal practice. In addition, we will examine approaches such as “one-person-one-language” and “one-person-two-languages” and discuss some video excerpts illustrating how children use their multilingual repertoire in a crèche at and school. [less ▲]

Detailed reference viewed: 20 (1 UL)
Full Text
Peer Reviewed
See detailEU citizens’ rights versus the Member States’ right to withdraw from the Union
Gerkrath, Jörg UL

Scientific Conference (2017, November 18)

Detailed reference viewed: 8 (0 UL)
Peer Reviewed
See detailConclusions
Pettiau, Hérold UL; Lemesle, Bruno; Lemaître, Nicole

Scientific Conference (2017, November 17)

This intervention consiste of concluding remarks of a conférence on the office of bishops as administrations of their diocèse within a region encompassing the Low Countries, dthe Duchy of Lorraine, the ... [more ▼]

This intervention consiste of concluding remarks of a conférence on the office of bishops as administrations of their diocèse within a region encompassing the Low Countries, dthe Duchy of Lorraine, the Alsace region, Switzelrand, south-Esastern France and the North of Italy, which were allegedly part of a sort of "catholic front" facing the Reformation. [less ▲]

Detailed reference viewed: 13 (0 UL)
See detailPourquoi et comment enseigner l’histoire luxembourgeoise ? Au-delà de l’amour de la patrie
Kmec, Sonja UL

Article for general public (2017)

L’histoire "transnationale" est souvent perçue comme une sorte de rédemption ou de sortie de secours. Cet article explique cette approche et montre en quoi elle est différente du concept d’histoire ... [more ▼]

L’histoire "transnationale" est souvent perçue comme une sorte de rédemption ou de sortie de secours. Cet article explique cette approche et montre en quoi elle est différente du concept d’histoire "métanationale". Il s'attèlera au paradoxe qui consiste d’un côté à s’émanciper du cadre national et d’un autre côté à se focaliser sur l’histoire de l’espace dans lequel on vit. Le lien entre nous et nos ancêtres (ou les personnes ayant occupé ce même endroit il y a des siècles) doit être problématisé.Ceci permet une auto-réflexion sur la manière dont les historiens produisent le savoir. [less ▲]

Detailed reference viewed: 5 (0 UL)
Full Text
Peer Reviewed
See detailLearning Resource Management through Semantic Annotation Features in Popular Authoring Software
Grevisse, Christian UL; Botev, Jean UL; Rothkugel, Steffen UL

in ICERI 2017 Proceedings (2017, November 16)

The ever-growing set of learning material challenges both students and teachers. While students often need to quickly retrieve resources on a certain topic, teachers have to author high quality documents ... [more ▼]

The ever-growing set of learning material challenges both students and teachers. While students often need to quickly retrieve resources on a certain topic, teachers have to author high quality documents in a limited amount of time, preferably using their favourite tools. In this paper, we propose an open ecosystem of plugins for popular authoring software, enabling teachers to annotate learning resources using domain concepts from ontologies. In addition, a plugin for the Moodle Learning Management System extracts these annotations from the metadata of the provided resources to allow students to get an overview of important concepts and efficiently retrieve corresponding material. [less ▲]

Detailed reference viewed: 13 (3 UL)
Full Text
See detailEuropean Migrations Post WWII; Past, Present and Future?
Paravantis, Spero UL

Speeches/Talks (2017)

Dr Paravantes' presentation, " European Migrations post-WWII: Past, Present and Future, " will discuss the history of migrations and migration/refugee policy within the EU, from the beginning of the ... [more ▼]

Dr Paravantes' presentation, " European Migrations post-WWII: Past, Present and Future, " will discuss the history of migrations and migration/refugee policy within the EU, from the beginning of the integration process and the formation of the European Coal and Steel Community (ECSC) until the present. The talk will focus on earlier migrations within Western Europe, the rules established to regulate internal and external migration, and the steps which the various iterations of the European Union and its individual members took to deal with them. The overarching objective of this presentation is to place current events, and reactions to them, into the context of European integration and to examine misconceptions about migration policy and borders in the EU. [less ▲]

Detailed reference viewed: 10 (1 UL)
See detailEarly life stress reduces neuropathic pain in adulthood -is alteration of spinal microglial reactivity critically involved?
Genty, Julien UL; Tetsi Nomigni, Milène UL; Anton, Fernand UL et al

Poster (2017, November 14)

Growing evidence underlines the association between early life adversity and persistent alterations of neural, endocrine and immune functions that may be accompanied by a host of disease patterns such as ... [more ▼]

Growing evidence underlines the association between early life adversity and persistent alterations of neural, endocrine and immune functions that may be accompanied by a host of disease patterns such as chronic pain in later life. Neuropathy is a debilitating condition presenting a substantial cooccurrence with stress related disorders. Despite the established overlapping of biochemical pathways involved in the etiology of these disorders, the intricacy of their mutual interdependence remains. In this context, immunocompetent cells are largely affected during chronic stress and are a key factor in the sensitization of nociceptive dorsal horn neurons. The goal of the present study was to investigate the impact of maternal separation (MS), a wellestablished model of early life stress in rodents, on chronic constriction injury (CCI)induced neuropathic pain and to reveal the relevance of spinal microglia activation and proinflammatory cytokine regulation. For this purpose 12 groups of rats were exposed to different combinations of stress condition, CCIinjury and pharmacological treatment. Noxious sensitivity was tested during baseline conditions as well as during subsequent neuropathic and pharmacological treatment conditions. Von Frey hair and the cold plate tests were used for the assessment of mechanical and cold hyperalgesia/allodynia. Amphotericin B, a substance known to activate monocytes and macrophages in the periphery and microglial cells in the CNS was administered to subgroups of animals. At the end of the protocol, rats were sacrificed to assess microglial activation using qPCR and immunohistochemistry. Our main finding was that maternal separation led to a reduction of CCIrelated pain hypersensitivity (thermal and mechanical hyperalgesia/allodynia). We concomitantly observed a downregulation of Iba 1, mRNA a marker of microglial cells, and of IL1β mRNA, a proinflammatory cytokine that may be released by microglia. According to preliminary results, Amphotericin B in turn seemed to enhance CCI related pain sensitivity, possibly via an activation of microglia. Our results show that MS may lead to a reduction of neuropathy relatedpain in adult age. Stress related dampening of spinal microglial reactivity may play a critical role in this context. [less ▲]

Detailed reference viewed: 17 (5 UL)
See detailUnderstanding Alpha Decay
Penasse, Julien UL

Presentation (2017, November 14)

Detailed reference viewed: 3 (0 UL)