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See detailA New Polytopic Approach for the Unknown Input Functional Observer Design
Bezzaoucha, Souad UL; Voos, Holger UL; Darouach, Mohamed

in International Journal of Control (2017)

In this paper, a constructive procedure to design Functional Unknown Input Observers for nonlin ear continuous time systems is proposed under the Polytopic Takagi-Sugeno framework. An equivalent ... [more ▼]

In this paper, a constructive procedure to design Functional Unknown Input Observers for nonlin ear continuous time systems is proposed under the Polytopic Takagi-Sugeno framework. An equivalent representation for the nonlinear model is achieved using the Sector Nonlinearity Transformation (SNT). Applying the Lyapunov theory and the L2 attenuation, Linear Matrix Inequalities (LMI)s conditions are deduced which are solved for feasibility to obtain the observer design matrices. To cope with the e ffect of unknown inputs, classical approach of decoupling the unknown input for the linear case is used. Both algebraic and solver based solutions are proposed (relaxed conditions). Necessary and su fficient conditions for the existence of the functional polytopic observer are given. For both approaches, the general and particular cases (measurable premise variables, full state estimation with full and reduced order cases) are considered and it is shown that the proposed conditions correspond to the one presented for standard linear case. To illustrate the proposed theoretical results, detailed numerical simulations are presented for a Quadrotor Aerial Robots Landing and a Waste Water Treatment Plant (WWTP). Both systems are highly nonlinear and represented in a T-S polytopic form with unmeasurable premise variables and unknown inputs. [less ▲]

Detailed reference viewed: 90 (2 UL)
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See detailNew Possibilities and Challenges for Assessment through the Use of Technology
Martin, Romain UL

in Scheuermann, Friedrich; Pereira Guimarães, Angela (Eds.) Towards a Research Agenda on Computer-Based Assessment. Challenges and needs for European Educational Measurement (2008)

Detailed reference viewed: 65 (3 UL)
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See detailNew product and service launching in new ventures: A multilevel approach to innovation antecedents
Geraudel, Mickaël UL; Gast, Johanna; Gundolf, Katherine

in Economics of Innovation and New Technology (2017), 26(4), 353-367

Macro-economic policies such as public financing seek to push the development and introduction of innovations; however, entrepreneurs also need support in their “day-to-day” activities to improve their ... [more ▼]

Macro-economic policies such as public financing seek to push the development and introduction of innovations; however, entrepreneurs also need support in their “day-to-day” activities to improve their capability to launch innovations. As this micro-level perspective is rarely studied, we analyze both the micro and macro levels by examining the effects of the entrepreneurs’ individual intention to innovate and public financing. Additionally, we include the meso level, representing entrepreneurs’ network. Entrepreneurs are embedded in social spheres in which they capture resources and identify opportunities. But not all entrepreneurs are equally well supported, and some tend to be completely isolated. We thus focus on multilevel factors explaining new product or service launching in new ventures. Drawing on data of 48,251 French new ventures, we reveal that innovation intention and public financing positively impact new ventures’ product and service innovation launching, while entrepreneurs’ isolation has a negative effect. We also highlight two interaction effects that enhance the multilevel effects of innovation antecedents. [less ▲]

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See detailThe new Protein Topology Graph Library web server
Schäfer, Tim; Bruneß, Daniel; Scheck, Andreas et al

in Bioinformatics (2016), 32(3), 474-6

Summary: We present a new, extended version of the Protein Topology Graph Library (PTGL) web server. The PTGL describes the protein topology on the super-secondary structure level. It allows to compute ... [more ▼]

Summary: We present a new, extended version of the Protein Topology Graph Library (PTGL) web server. The PTGL describes the protein topology on the super-secondary structure level. It allows to compute and visualize protein ligand graphs and search for protein structural motifs. The new server features additional information on ligand binding to secondary structure elements (SSEs), increased usability, and an application programming interface (API) to retrieve data, allowing for an automated analysis of protein topology. Availability: The PTGL server is freely available on the web at http://ptgl.uni-frankfurt.de. The website is implemented in PHP, JavaScript, PostgreSQL and Apache. It is supported by all major browsers. The VPLG software that was used to compute the protein ligand graphs and all other data in the database is available under the GNU public license 2.0 from http://vplg.sourceforge.net. [less ▲]

Detailed reference viewed: 334 (8 UL)
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See detailA new reading of primary sources via the digital analysis of social networks. ‘The Werner Committee and the debates on European economic and monetary integration’
Danescu, Elena UL; Heimbach, Henriette; During, Marten UL et al

Scientific Conference (2016, June 10)

This pilot project was carried out in connection with the CVCE’s strategy of combining humanities and social sciences research with digital tools and publishing the results via its digital research ... [more ▼]

This pilot project was carried out in connection with the CVCE’s strategy of combining humanities and social sciences research with digital tools and publishing the results via its digital research infrastructure on European integration, CVCE.eu. Methods borrowed from social network analysis and qualitative data analysis were applied to a specific section of the digital publication on the 1970 Werner Report, a publication which was compiled on the basis of the ‘traditional’ exploration and interpretation of a vast number of previously unpublished primary sources. 2 The aim of the analysis was to summarise and visualise the negotiations within the Werner Committee so as to shed new light on the historical facts. By using this innovative technique we were able to demonstrate links, affinities and oppositions among the members of the committee, identify the influence of individual Member States in the ongoing dispute between ‘economists’ and ‘monetarists’ which characterised the debates on EMU, and highlight contributions to the political consensus on the Werner Report. [less ▲]

Detailed reference viewed: 62 (6 UL)
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See detailA new rechargeable device for deep brain stimulation: a prospective patient satisfaction survey.
Timmermann, Lars; Schupbach, Michael; Hertel, Frank UL et al

in European neurology (2013), 69(4), 193-9

BACKGROUND: Deep brain stimulation (DBS) is highly successful in treating Parkinson's disease (PD), dystonia, and essential tremor (ET). Until recently implantable neurostimulators were nonrechargeable ... [more ▼]

BACKGROUND: Deep brain stimulation (DBS) is highly successful in treating Parkinson's disease (PD), dystonia, and essential tremor (ET). Until recently implantable neurostimulators were nonrechargeable, battery-driven devices, with a lifetime of about 3-5 years. This relatively short duration causes problems for patients (e.g. programming and device-use limitations, unpredictable expiration, surgeries to replace depleted batteries). Additionally, these batteries (relatively large with considerable weight) may cause discomfort. To overcome these issues, the first rechargeable DBS device was introduced: smaller, lighter and intended to function for 9 years. METHODS: Of 35 patients implanted with the rechargeable device, 21 (including 8 PD, 10 dystonia, 2 ET) were followed before and 3 months after surgery and completed a systematic survey of satisfaction with the rechargeable device. RESULTS: Overall patient satisfaction was high (83.3 +/- 18.3). Dystonia patients tended to have lower satisfaction values for fit and comfort of the system than PD patients. Age was significantly negatively correlated with satisfaction regarding process of battery recharging. CONCLUSIONS: Dystonia patients (generally high-energy consumption, severe problems at the DBS device end-of-life) are good, reliable candidates for a rechargeable DBS system. In PD, younger patients, without signs of dementia and good technical understanding, might have highest benefit. [less ▲]

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See detailA new relationship to unemployment? Its impact on subjective well-being
Thill, Steve UL; Pignault, Anne UL; Houssemand, Claude UL

Scientific Conference (2017, May 18)

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See detailThe new restructuring of internal EU-borders by cross-border migration
Nienaber, Birte UL

Scientific Conference (2011, August 31)

Detailed reference viewed: 35 (0 UL)
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See detailNew routes to sustainable photovoltaics: evaluation of Cu2ZnSnS4 as an alternative absorber material
Scragg, Jonathan J.; Dale, Phillip UL; Peter, Laurence et al

in Physica Status Solidi B. Basic Research (2008), 245(9), 1772-1778

Detailed reference viewed: 103 (0 UL)
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See detailNew services, new travelers, old models? Directions to pioneer public transport models in the era of big data
Fonzone, Achille; Schmocker, Jan-Dirk; Viti, Francesco UL

in Journal of Intelligent Transportation Systems (2016)

Detailed reference viewed: 98 (8 UL)
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See detailA New Set of Quartic Trivariate Polynomial Equations for Stratied Camera Self-calibrationunder Zero-Skew and Constant Parameters Assumptions
Habed, Adlane; Al Ismaeil, Kassem UL; Fofi, David

in Computer Vision – ECCV 2012, 12th European Conference on Computer Vision, Florence, Italy, October 7-13, 2012, Proceedings, Part VI (2012)

This paper deals with the problem of self-calibrating a moving camera with constant parameters. We propose a new set of quartic trivariate polynomial equations in the unknown coordinates of the plane at ... [more ▼]

This paper deals with the problem of self-calibrating a moving camera with constant parameters. We propose a new set of quartic trivariate polynomial equations in the unknown coordinates of the plane at infinity derived under the no-skew assumption. Our new equations allow to further enforce the constancy of the principal point across all images while retrieving the plane at infinity. Six such polynomials, four of which are independent, are obtained for each triplet of images. The proposed equations can be solved along with the so-called modulus constraints and allow to improve the performance of existing methods. [less ▲]

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See detailA new Single-phase PLL based on the input voltage magnitude estimation
Kobou Ngani, Patrick UL; Hadji-Minaglou, Jean-Régis UL; Marso, Michel UL et al

Scientific Conference (2015, December 17)

Many automatic control applications such as wide scale power grid management and local power conditioning rely on the fast and accurate detection of the voltage signal phase and amplitude. These ... [more ▼]

Many automatic control applications such as wide scale power grid management and local power conditioning rely on the fast and accurate detection of the voltage signal phase and amplitude. These information are almost all the time given by the Phase –locked Loop (PLL) systems and can be single-phase or three-phase and have many different structures. Many single-phase PLLs core structure are based on the regulation to zero of the voltage direct component in the rotating d-q frame obtained through the Park-transform. Their accuracy and dynamic rely on how quick and accurate the second voltage’s component in the static α-β frame is estimated. This paper presents a new single-phase PLL structure, also based on the same core structure as described before, but implementing a novel voltage β-component generation. A brief review of some single-phase PLLs is made, then the proposed novel PLL structure is detailed and its performance is compared with that of the other PLL’s taking into consideration the following signal disturbances: amplitude variations, phase step variation and frequency fluctuations as well as harmonic distortion. [less ▲]

Detailed reference viewed: 162 (12 UL)
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See detailA new software architecture for learning managements systems with SCORM support
Casel, Nicolas UL; El Alami, Marc UL; Garot, Damien UL et al

in Proceedings of “IADIS - International Conference on e-Learning” (2007)

Multimodality and standardization are the main requirements to achieve in order to deliver powerful and successful Learning Management Systems (LMS). This paper shows how we designed such a LMS in the ... [more ▼]

Multimodality and standardization are the main requirements to achieve in order to deliver powerful and successful Learning Management Systems (LMS). This paper shows how we designed such a LMS in the context of the “e-FSTC” project, which insures reusability and portability of its features and of learning contents. We sum up current trends in the e-learning domain, and we explain to what extent our LMS matches with them, as well as how it implements a flexible architecture, and how it adopts the SCORM Run-Time Environment for interoperability issues. [less ▲]

Detailed reference viewed: 151 (8 UL)
See detailNew spaces of collective belonging, memory and its fears: Fabricating the self and “others”
Popkewitz, Thomas S. UL; Martins, Catarina S.

in Calogiannakis, P.; Karras, K.; Chiang, T.-H. (Eds.) et al Crisis in education: Modern trends and issues (2014)

Detailed reference viewed: 36 (3 UL)
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See detailNew Speed Records for Montgomery Modular Multiplication on 8-Bit AVR Microcontrollers
Liu, Zhe UL; Groszschädl, Johann UL

in Pointcheval, David; Vergnaud, Damien (Eds.) Progress in Cryptology - AFRICACRYPT 2014, 7th International Conference on Cryptology in Africa, Marrakesh, Morocco, May 28-30, 2014. Proceedings (2014, May)

Detailed reference viewed: 152 (12 UL)
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See detailNew State-of-the-art Results for Cassini2 Global Trajectory Optimization Problem
Danoy, Grégoire UL; Dorronsoro, Bernabé UL; Bouvry, Pascal UL

in International Joint Conference on Artificial Intelligence (IJCAI) (2011)

Detailed reference viewed: 71 (14 UL)
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See detailNew State-of-the-art Results for Cassini2 Global Trajectory Optimization Problem
Danoy, Grégoire UL; Dorronsoro, Bernabé UL; Bouvry, Pascal UL

in Acta Futura : The Journal of the Advanced Concepts Team (2012), 5

Detailed reference viewed: 73 (5 UL)