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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 ▲]

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See detailA Perspective of Security for Mobile Service Robots
Cornelius, Gary Philippe UL; Hochgeschwender, Nico UL; Voos, Holger UL et al

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

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

Future homes will contain Mobile Service Robots (MSR) with diversefunctionality. MSRs act in close proximity to humans and have the physical capa-bilities to cause serious harm to their environment. Furthermore, they have sen-sors that gather large amounts of data, which might contain sensitive informa-tion. A mobile service robot’s physical capabilities are controlled by networkedcomputers susceptible to faults and intrusions. The proximity to humans and thepossibility to physically interact with them makes it critical to think about thesecurity issues of MSRs. In this work, we investigate possible attacks on mobileservice robots. We survey adversary motivations to attack MSRs, analyse threatvectors and list different available defence mechanisms against attacks on MSRs. [less ▲]

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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 ▲]

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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 ▲]

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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)

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See detailEU citizens’ rights versus the Member States’ right to withdraw from the Union
Gerkrath, Jörg UL

Scientific Conference (2017, November 18)

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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 ▲]

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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 ▲]

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See detailProinflammatory T Cell Status Associated with Early Life Adversity
Elwenspoek, M.M.C.; Hemgesch, X.; Leenen, F.A.D et al

in Journal of Immunology (2017)

Early life adversity (ELA) has been associated with an increased risk for diseases in which the immune system plays a critical role. The ELA immune phenotype is characterized by inflammation, impaired ... [more ▼]

Early life adversity (ELA) has been associated with an increased risk for diseases in which the immune system plays a critical role. The ELA immune phenotype is characterized by inflammation, impaired cellular immunity, and immunosenescence. However, data on cell-specific immune effects are largely absent. Additionally, stress systems and health behaviors are altered in ELA, which may contribute to the generation of the ELA immune phenotype. The present investigation tested cell-specific immune differences in relationship to the ELA immune phenotype, altered stress parameters, and health behaviors in individuals with ELA (n = 42) and those without a history of ELA (control, n = 73). Relative number and activation status (CD25, CD69, HLA-DR, CD11a, CD11b) of monocytes, NK cells, B cells, T cells, and their main subsets were assessed by flow cytometry. ELA was associated with significantly reduced numbers of CD69+CD8+ T cells (p = 0.022), increased numbers of HLA-DR+ CD4 and HLA-DR+ CD8 T cells (p < 0.001), as well as increased numbers of CD25+CD8+ T cells (p = 0.036). ELA also showed a trend toward higher numbers of CCR4+CXCR3−CCR6+ CD4 T cells. Taken together, our data suggest an elevated state of immune activation in ELA, in which particularly T cells are affected. Although several aspects of the ELA immune phenotype were related to increased activation markers, neither stress nor health-risk behaviors explained the observed group differences. Thus, the state of immune activation in ELA does not seem to be secondary to alterations in the stress system or health-risk behaviors, but rather a primary effect of early life programming on immune cells. [less ▲]

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See detailAssociative and quasitrivial operations on finite sets (invited lecture)
Marichal, Jean-Luc UL; Couceiro, Miguel; Devillet, Jimmy UL

Scientific Conference (2017, November 10)

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See detailPromotion of diversity in public and corporate entities
Hartung, Anne UL

Speeches/Talks (2017)

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See detailGesundheitsbeschwerden von Schülern in Luxemburg
Heinz, Andreas UL; Kern, Matthias Robert UL; Residori, Caroline UL et al

E-print/Working paper (2017)

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See detailDie allgemeine Lebenszufriedenheit von Schülern in Luxemburg
Kern, Matthias Robert UL; Residori, Caroline UL; Heinz, Andreas UL et al

E-print/Working paper (2017)

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See detailThe Effects of Deskilling and Unemployment on Hiring Decisions
Samuel, Robin UL; Imdorf, Christian; Sacchi, Stefan et al

Scientific Conference (2017, November 08)

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See detailUniversal health coverage: an urgent need for collaborative learning and technology in primary care
Patel, Kunal D.; Mcloughlin, Clodagh; Lygidakis, Charilaos UL et al

in Education for Primary Care (2017)

Universal health coverage is an achievable goal for all health professionals globally. However, for it to be implemented technology and collaboration are essential. This letter focuses on recently ... [more ▼]

Universal health coverage is an achievable goal for all health professionals globally. However, for it to be implemented technology and collaboration are essential. This letter focuses on recently published recommendations for technology in primary care education in respect to Universal Health Coverage. [less ▲]

Detailed reference viewed: 17 (1 UL)