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12,348 results on '"AUF"'

201. A Peer-to-Peer Based Cloud Storage Supporting Orthogonal Range Queries of Arbitrary Dimension

Author

Benter, Markus, Knollmann, Till, auf der Heide, Friedhelm Meyer, Setzer, Alexander, Sundermeier, Jannik, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Disser, Yann, editor, and Verykios, Vassilios S., editor

Published
2019
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202. Continuous Protocols for Swarm Robotics

Author

Kling, Peter, Meyer auf der Heide, Friedhelm, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Flocchini, Paola, editor, Prencipe, Giuseppe, editor, and Santoro, Nicola, editor

Published
2019
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210. Management practices for postdural puncture headache in obstetrics: a prospective, international, cohort study

Author

Casier, Isabelle, Bryon, Bart, Soetens, Filiep, Dewandre, Pierre-Yves, Lambert, Geraldine, Christiaen, Jan, Schepers, Roel, Van Houwe, Patrick, Kalmar, Alain, Vanoverschelde, Henk, Bauters, Monique, Roofthooft, Eva, Devroe, Sarah, Van de Velde, Marc, Jadrijevic, Ana, Jokic, Aleksandra, Marin, Damjan, Sklebar, Ivan, Mihaljević, Slobodan, Kosinova, Martina, Stourac, Petr, Adamus, Milan, Kufa, Christian, Volfová, Ivana, Zaoralová, Blažena, Froeslev-Friis, Christina, Mygil, Bjoern, Krebs Albrechtsen, Charlotte, Kavasmaa, Tomi, Alahuhta, Seppo, Mäyrä, Anne, Mennander, Susanna, Rautaneva, Kati, Hiekkanen, Tuula, Kontinen, Vesa, Linden, Kirsti, Toivakka, Sara, Boselli, Emmanuel, Greil, Pierre-Édouard, Mascle, Olivier, Courbon, Aurelie, Lutz, Jean, Simonet, Thérèse, Barbier, Marie, Hlioua, Tarik, Meniolle d’Hauthville, Fleur, Quintin, Christine, Bouattour, Karim, Lecinq, Agnès, Soued, Mickaël, Bonnet, Marie-Pierre, Carbonniere, Mathieu, Fischer, Catherine, Picard, Paola-Carla, Bonnin, Martine, Storme, Brigitte, Bouthors, Anne-Sophie, Detente, Thomas, Nguyen Troung, Minh, Keita, Hawa, Nebout, Sophie, Osse, Lauranne, Delmas, Anne, Vial, Florence, Kaufner, Lutz, Hoefing, Christoph, Mueller, Stefan, Becke, Karin, Blobner, Manfred, Lewald, Heidrun, Schaller, Stefan Josef, Muggleton, Ellis, Bette, Birgit, Neumann, Claudia, Weber, Stefan, Grünewald, Matthias, Ohnesorge, Henning, Helf, Antonia, Jelting, Yvonne, Kranke, Peter, von Heymann, Christian, Welfle, Sabine, Staikou, Chryssoula, Stavrianopoulou, Antonia, Tsaroucha, Athanasia, Kalopita, Konstantina, Loukeri, Anastasia, Valsamidis, Dimitrios, Matsota, Paraskevi, Thorsteinsson, Adalbjörn, Tome, Riad, Eidelman, Leonid A., Davis, Atara, Orbach-Zinger, Sharon, Ioscovich, Alexander, Ramona, Iacob, De Simone, Luigi, Pesetti, Barbara, Brazzi, Luca, Zito, Alessandro, Camorcia, Michela, Della Rocca, Giorgio, Aversano, Marco, Frigo, Maria Grazia, Todde, Cristina, Morina, Qamile, Macas, Andrius, Keraitiene, Grazina, Rimaitis, Kestutis, Borg, Francis, Tua, Carl, Kuijpers-Visser, Agnes Geertje, Schyns-van den Berg, Alexandra, Hollmann, Markus W., Van den Berg, Tijs, Koolen, Eric, Dons, Ilse, van der Knijff, Anouk, van der Marel, Caroline, Ruysschaert, Nele, Pelka, Michal, Pluymakers, Christine, Koopman, Seppe, Teunissen, Aart-Jan, Cornelisse, Dick, van Dasselaar, Nick, Verdouw, Bastiaan, Beenakkers, Ingrid, Dahl, Vegard, Hagen, Robert, Vivaldi, Francesco, Eriksen, John Reidar, Wiszt, Radovan, Aslam Tayyaba, Naz, Ringvold, Else-Marie, Chutkowski, Radosław, Skirecki, Tomasz, Wódarski, Bartłomiej, Faria, Maria Aida, Ferreira, Amélia, Sampaio, Ana Catarina, Ferreira, Irene, Matias, Bernardo, Teixeira, Joana, Araujo, Rita, Cabido, Herminia, Fortuna, Rosario, Lemos, Paulo, Cardoso, Carolina, Moura, Fernando, Pereira, Cristiana, Pereira, Sandra, Tavares, Francisca, Vasconcelos, Pedro, Abecasis, Manuel, Lança, Filipa, Muchacho, Paulo, Ormonde, Lucindo, Guedes-Araujo, Isabel, Pinho-Oliveira, Vitor, Paredes, Paulo, Bentes, Carla, Gouveia, Francisco, Milheiro, Ana, Castanheira, Cláudia, Neves, Miriam, Pacheco, Vânia, Cortez, Mara, Tranquada, Raquel, Tareco, Glória, Furtado, Inês, Pereira, Estela, Marinho, Luísa, Seabra, Manue, Bulasevic, Aleksandra, Kendrisic, Mirjana, Jovanovic, Lidija, Pujić, Borislava, Kutlesic, Marija, Grochova, Monika, Simonova, Jana, Pavlovic, Gordana, Rozman, Ales, Blajic, Iva, Graovac, Dragan, Stopar Pintraic, Tatjana, Chiquito, Teresa, Monedero, Pablo, Carlos-Errea, De Joaquin, Guillén-Casbas, Roque, Veiga-Gil, Leonor, Basso, Morena, Garcia Bartolo, Carolina, Hernandez, Cristian, Ricol, Laura, De Santos, Maroto Pinar, Gràcia Solsona, Josep A., López-Baamonde, Manuel, Magaldi Mendaña, Marta, Plaza Moral, Ana María, Vendrell, Marina, Trillo, Lourdes, Perez Garcia, Anibal Ricardo, Alamillo Salas, Clara, Moret, Enric, Ramió, Laura, Aguilar Sanchez, Jose Luis, Soler Pedrola, Maria, Valldeperas Hernandez, Maria Inmaculada, Aldalur, Gorka, Bárcena, Estíbaliz, Herrera, Julia, Iturri, Fernando, Martínez, Alberto, Martínez, Leire, Serna, Rosa, Gilsanz, Fernando, Guasch Arevalo, Emilia, Iannuccelli, Fabrizio, Latorre, Julieta, Rodriguez Roca, Cristina, Pérez Pardo, Osvaldo Ceferino, Sierra Biddle, Natalia, Suárez Cendaña, Ceferina, Hernández González, Lourdes, Remacha González, Caridad, Sánchez Nuez, Raquel, Anta, Diego, Beleña, Jose M., García-Cuadrado, Carmen, Garcia, Irene, Manrique, Susana, Suarez, Elena, Hein, Anette, Arbman, Elisabet, Hansson, Helena, Tillenius, Monika, Al-Taie, Ruaa, Ledin-Eriksson, Susanne, Lindén-Söndersö, Anja, Rosén, Ola, Austruma, Evija, Gillberg, Lars, Darvish, Bijan, Gupta, Anil, Nordstöm, Johan L., Persson, Jan, Rosenberg, Jan, Brühne, Lars, Forshammar, Johan, Ugarph Edfeldt, Malin, Rolfsson, Håkan, Hellblom, Anna, Levin, Katarina, Rabow, Sofus, Thorlacius, Karin, Bansch, Peter, Robertson (Baeriswyl), Moira, Stamer, Ulrike, Mathivon, Stanislas, Savoldelli, Georges, Auf der Maur, Pia, Filipovic, Miodrag, Dullenkopf, Alexander, Brunner, Maya, Girard, Thierry, Vonlanthen, Claudia, Ozbilgin, Sule, Gunaydin D, Berrin, Corman Dincer, Pelin, Tas Tuna, Ayca, Magnuson, Anders, Fernando, Roshan, Mercier, Frédéric J., and Schyns-van den Berg, Alexandra M.J.V.

Published
2020
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215. Uncovering microstructural architecture from histology

Author

Georgiadis, Marios, primary, auf der Heiden, Franca, additional, Abbasi, Hamed, additional, Ettema, Loes, additional, Nirschl, Jeffrey, additional, Moein Taghavi, Hossein, additional, Wakatsuki, Moe, additional, Liu, Andy, additional, Ho, William Hai Dang, additional, Carlson, Mackenzie, additional, Doukas, Michail, additional, Koppes, Sjors A., additional, Keereweer, Stijn, additional, Sobel, Raymond A., additional, Setsompop, Kawin, additional, Liao, Congyu, additional, Amunts, Katrin, additional, Axer, Markus, additional, Zeineh, Michael M., additional, and Menzel, Miriam, additional

Published
2024
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227. Social Comparison and Body Image in Teenage Users of the TikTok App

Author

Ibn Auf, Anas Ibn Auf Abbas, primary, Alblowi, Yassmeen Hmoud, additional, Alkhaldi, Raghad Oudah, additional, Thabet, Salman Anwar, additional, Alabdali, Ahmed Ali H, additional, Binshalhoub, Fahad Hisham, additional, Alzahrani, Khalid Ali S, additional, and Alzahrani, Reem Abdulrhman I, additional

Published
2023
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229. Online Top-k-Position Monitoring of Distributed Data Streams

Author

Mäcker, Alexander, Malatyali, Manuel, and der Heide, Friedhelm Meyer auf

Subjects
Computer Science - Data Structures and Algorithms, F.1.2
Abstract

Consider n nodes connected to a single coordinator. Each node receives an individual online data stream of numbers and, at any point in time, the coordinator has to know the k nodes currently observing the largest values, for a given k between 1 and n. We design and analyze an algorithm that solves this problem while bounding the amount of messages exchanged between the nodes and the coordinator. Our algorithm employs the idea of using filters which, intuitively speaking, leads to few messages to be sent, if the new input is "similar" to the previous ones. The algorithm uses a number of messages that is on expectation by a factor of O((log {\Delta} + k) log n) larger than that of an offline algorithm that sets filters in an optimal way, where {\Delta} is upper bounded by the largest value observed by any node.

Published
2014

230. Quality of Service in Network Creation Games

Author

Cord-Landwehr, Andreas, Mäcker, Alexander, and der Heide, Friedhelm Meyer auf

Subjects
Computer Science - Computer Science and Game Theory, G.2.2, F.2.2
Abstract

Network creation games model the creation and usage costs of networks formed by n selfish nodes. Each node v can buy a set of edges, each for a fixed price \alpha > 0. Its goal is to minimize its private costs, i.e., the sum (SUM-game, Fabrikant et al., PODC 2003) or maximum (MAX-game, Demaine et al., PODC 2007) of distances from $v$ to all other nodes plus the prices of the bought edges. The above papers show the existence of Nash equilibria as well as upper and lower bounds for the prices of anarchy and stability. In several subsequent papers, these bounds were improved for a wide range of prices \alpha. In this paper, we extend these models by incorporating quality-of-service aspects: Each edge cannot only be bought at a fixed quality (edge length one) for a fixed price \alpha. Instead, we assume that quality levels (i.e., edge lengths) are varying in a fixed interval [\beta,B], 0 < \beta <= B. A node now cannot only choose which edge to buy, but can also choose its quality x, for the price p(x), for a given price function p. For both games and all price functions, we show that Nash equilibria exist and that the price of stability is either constant or depends only on the interval size of available edge lengths. Our main results are bounds for the price of anarchy. In case of the SUM-game, we show that they are tight if price functions decrease sufficiently fast., Comment: An extended abstract of this paper has been accepted for publication in the proceedings of the 10th International Conference on Web and Internet Economics (WINE)

Published
2014

233. Impact of nanoscale fluctuations and cap-layer thickness in buried InGaN single quantum wells probed by tip-enhanced Raman scattering.

Author

Ries, M., Poliani, E., Nippert, F., Seidlitz, D., Greif, L. T. H., Koslow, I., Bläsing, J., Auf der Maur, M., Hoffmann, A., Esser, N., and Wagner, M. R.

Subjects
RAMAN scattering, QUANTUM wells, INDIUM gallium nitride, SEMICONDUCTOR thin films, SUPERLATTICES, QUANTUM fluctuations, CARRIER density
Abstract

Ternary semiconductors such as InGaN thin films, quantum wells, and superlattices commonly exhibit alloy fluctuations that become increasingly pronounced with higher In-content. The thickness fluctuations of quantum wells and their thin cap-layers further introduce nanoscale inhomogeneities that alter the potential landscape. In this work, we present a combined theoretical and experimental study of InGaN single quantum wells with thin GaN cap-layers to unravel the influence of cap-layer thickness, compositional inhomogeneity, and thickness fluctuations on their electronic and optical properties. A pronounced spectral shift of quantum well emission for thin cap-layers between 1 and 10 nm is observed by micro-photoluminescence spectroscopy. The origin of this shift is explained by calculations of electronic band profiles and probability density overlap of carriers in the quantum well. The impact of alloy fluctuations and homogeneity for different cap-layer thicknesses is studied on both the microscale and nanoscale using UV micro-Raman scattering and tip-enhanced Raman spectroscopy (TERS). On the microscale, the alloy composition as determined by micro-Raman mapping appears very homogeneous except for the thinnest 1 nm cap-layer where small fluctuations are visible. On the nanoscale, TERS reveals local fluctuations on a 20–30 nm length scale. The influence of the cap-layer thickness on the TERS spectra is discussed regarding both the nanoscale homogeneity and the depth resolution of the near-field Raman scattering technique. Our results demonstrate the capabilities of TERS to resolve nanoscale thickness fluctuations and compositional inhomogeneities in ultra-thin semiconductor layers, even when they are buried by thin cap-layers with thicknesses below 10 nm. [ABSTRACT FROM AUTHOR]

Published
2023
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236. Hierarchies

Author

der Heide, Friedhelm Meyer auf and Swierkot, Kamil

Subjects
Computer Science - Computational Complexity
Abstract

We study the complexity theory for the local distributed setting introduced by Korman, Peleg and Fraigniaud. They have defined three complexity classes LD (Local Decision), NLD (Nondeterministic Local Decision) and NLD^#n. The class LD consists of all languages which can be decided with a constant number of communication rounds. The class NLD consists of all languages which can be verified by a nondeterministic algorithm with a constant number of communication rounds. In order to define the nondeterministic classes, they have transferred the notation of nondeterminism into the distributed setting by the use of certificates and verifiers. The class NLD^#n consists of all languages which can be verified by a nondeterministic algorithm where each node has access to an oracle for the number of nodes. They have shown the hierarchy LD subset NLD subset NLD^#n. Our main contributions are strict hierarchies within the classes defined by Korman, Peleg and Fraigniaud. We define additional complexity classes: the class LD(t) consists of all languages which can be decided with at most t communication rounds. The class NLD-O(f) consists of all languages which can be verified by a local verifier such that the size of the certificates that are needed to verify the language are bounded by a function from O(f). Our main results are refined strict hierarchies within these nondeterministic classes.

Published
2013

237. Strain evolution in GaN Nanowires: from free-surface objects to coalesced templates

Author

Hugues, M., Shields, P. A., Sacconi, F., Mexis, M., der Maur, M. Auf, Cooke, M., Dineen, M., Di Carlo, A., Allsopp, D. W. E., and Zúñiga-Pérez, J.

Subjects
Condensed Matter - Materials Science
Abstract

Top-down fabricated GaN nanowires, 250 nm in diameter and with various heights, have been used to experimentally determine the evolution of strain along the vertical direction of 1-dimensional objects. X-ray diffraction and photoluminescence techniques have been used to obtain the strain profile inside the nanowires from their base to their top facet for both initial compressive and tensile strains. The relaxation behaviors derived from optical and structural characterizations perfectly match the numerical results of calculations based on a continuous media approach. By monitoring the elastic relaxation enabled by the lateral free-surfaces, the height from which the nanowires can be considered strain-free has been estimated. Based on this result, NWs sufficiently high to be strain-free have been coalesced to form a continuous GaN layer. X-ray diffraction, photoluminescence and cathodoluminescence clearly show that despite the initial strain-free nanowires template, the final GaN layer is strained.

Published
2013
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242. A Dynamic Distributed Data Structure for Top-k and k-Select Queries

Author

Feldkord, Björn, Malatyali, Manuel, Meyer auf der Heide, Friedhelm, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Böckenhauer, Hans-Joachim, editor, Komm, Dennis, editor, and Unger, Walter, editor

Published
2018
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243. A Communication-Efficient Distributed Data Structure for Top-k and k-Select Queries

Author

Biermeier, Felix, Feldkord, Björn, Malatyali, Manuel, Meyer auf der Heide, Friedhelm, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Solis-Oba, Roberto, editor, and Fleischer, Rudolf, editor

Published
2018
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244. Non-clairvoyant Scheduling to Minimize Max Flow Time on a Machine with Setup Times

Author

Mäcker, Alexander, Malatyali, Manuel, Meyer auf der Heide, Friedhelm, Riechers, Sören, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Solis-Oba, Roberto, editor, and Fleischer, Rudolf, editor

Published
2018
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