TY - CHAP A1 - Ellinger, Frank A1 - Meister, Tilo A1 - Grosa, Patrick A1 - Jamshidi, Kambiz A1 - Ihle, David A1 - Franchi, Norman A1 - Wagner, Jens A1 - Richter, Andreas A1 - Fettweis, Gerhard A1 - Fitzek, Frank A1 - Kreissig, Martin A1 - Klessig, Henrik A1 - Kraemer, Rolf A1 - Richter, Klaus A1 - Frotzscher, Andreas A1 - Löhr, Robert A1 - Winkler, Wolfgang A1 - Zoeke, Dominik A1 - Carot, Alexander A1 - Bluschke, Andreas T1 - Project FAST - Fast Actuators Sensors & Transceivers T2 - Microwave Conference (LAMC), IEEE MTT-S Latin America, 12-14 Dec. 2016 Puerto Vallarta, Mexico Y1 - 2016 SN - 978-1-5090-4287-6 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Staron, Peter A1 - Beckmann, Felix A1 - Lippmann, Thomas A1 - Stark, Andreas A1 - Oehring, Michael A1 - Pyczak, Florian A1 - Salgado, Mario A1 - Hort, Norbert A1 - Eckerlebe, Horst A1 - Kainer, Karl Ulrich A1 - Müller, Martin A1 - Schreyer, Andreas T1 - In situ studies of light metals with synchrotron radiation and neutrons T2 - Materials Science Forum Y1 - 2011 SN - 1662-9752 IS - 690 SP - 192 EP - 197 ER - TY - GEN A1 - Prein, Andreas A1 - Gobiet, Andreas A1 - Suklitsch, Martin A1 - Truhetz, Heimo A1 - Awan, N. K. A1 - Keuler, Klaus A1 - Georgievski, Goran T1 - Added value of convection permitting seasonal simulations T2 - Climate Dynamics Y1 - 2013 U6 - https://doi.org/10.1007/s00382-013-1744-6 VL - 41 SP - 2655 EP - 2677 ER - TY - GEN A1 - Kenda, Andreas A1 - Kraft, Martin A1 - Tortschanoff, Andreas A1 - Scherf, Werner A1 - Sandner, Thilo A1 - Schenk, Harald A1 - Luettjohann, Stephan A1 - Simon, Apolline T1 - Development, characterization and application of compact spectrometers based on MEMS with in-plane capacitive drives T2 - Next-generation spectroscopic technologies VII, 5 - 6 May 2014, Baltimore, Maryland, United States Y1 - 2014 SN - 978-1-62841-038-9 SP - 910102-1 EP - 910102-10 PB - SPIE CY - Bellingham, Wash. ER - TY - CHAP A1 - Ulrich, Rainer G. A1 - Schlegel, Matthias A1 - Mertens, Marc A1 - Groschup, Martin H. A1 - Schmidt-Chanasit, Jonas A1 - Plenge-Bönig, Anita A1 - Jacob, Jens A1 - Pelz, Hans-Joachim A1 - Freise, Jona A1 - Wenk, Matthias A1 - Thiel, Jörg A1 - Triebenbacher, Cornelia A1 - Schmolz, Eric A1 - Kurth, Andreas A1 - Krüger, Frank A1 - Rühe, Ferdinand A1 - Kiffner, Christian A1 - Ansorge, Hermann A1 - Gerwin, Werner A1 - Wegener, Wolfgang A1 - Müller, Jörg A1 - Bemmann, Margit A1 - Wolf, Ronny A1 - Otto, Lutz-Florian A1 - Oehme, Rainer A1 - Pfeffer, Martin A1 - Heckel, Gerald A1 - Schex, Susanne A1 - Essbauer, Sandra S. T1 - Netzwerk Nagetier-übertragene Pathogene: Monitoring von Hantavirus-Infektionen in Deutschland T2 - Wildhygiene, Wildtierkrankheiten, Parasiten, Epidemiologie Y1 - 2009 SN - 978-378-88131-2-3 SN - 1436-3895 SP - 229 EP - 250 PB - Ges. für Wildtier- und Jagdforschung CY - Halle/Saale ER - TY - GEN A1 - Kleefeld, Andreas A1 - Reißel, Martin T1 - The Levenberg-Marquardt method applied to a parameter estimation problem arising from electrical resistivity tomography T2 - Journal of Applied Mathematics and Computation N2 - An efficient and robust electrical resistivity tomographic inversion algorithm based on the Levenberg-Marquardt method is considered to obtain quantities like grain size, source discrimination and particle size distribution. The corresponding model in two-dimensions is based on the Maxwell equations and leads to a partial differential equation with mixed Dirichlet-Neumann boundary conditions. The forward problem is solved numerically with the finite-difference method. However, the inverse problem at hand is a classic nonlinear and ill-posed parameter estimation problem. Linearizing it and applying the Tikhonov regularization method yields an iterative scheme, the Levenberg-Marquardt method. Several systems of equations of large size have to be solved efficiently in each iteration step which is accomplished by the conjugate gradient method without setting up the corresponding matrix. Instead fast matrix-vector multiplications are performed directly. Therefore, the derivative and its adjoint for the parameter-to-solution map are needed. Numerical results demonstrate the performance of our method as well as the possibility to reconstruct some of the desired parameters. KW - Levenberg-Marquardt method KW - Fréchett derivative KW - nonlinear and ill-posed problem KW - estimation problem KW - parameter estimation problem Y1 - 2011 SN - 0096-3003 VL - 217 IS - 9 SP - 4490 EP - 4501 ER - TY - GEN A1 - Wätzold, Frank A1 - Drechsler, Martin A1 - Armstrong, Claire W. A1 - Baumgärtner, Stefan A1 - Grimm, Volker A1 - Huth, Andreas A1 - Perrings, Charles A1 - Possingham, Hugh P. A1 - Shogren, Jason F. A1 - Skonhoft, Anders A1 - Verboom-Vasiljev, Jana A1 - Wissel, Christian T1 - Ecological-economic modeling for biodiversity management: Potential, pitfalls, prospects Y1 - 2006 ER - TY - GEN A1 - Schloffer, Martin A1 - Iqbal, Farasat A1 - Gabrisch, Heike A1 - Schwaighofer, Emanuel A1 - Schimansky, Frank-Peter A1 - Mayer, Svea A1 - Stark, Andreas A1 - Lippmann, Thomas A1 - Göken, Mathias A1 - Pyczak, Florian A1 - Clemens, Helmut T1 - Microstructure development and hardness of a powder metallurgical multi phase gamma-TiAl based alloy T2 - Intermetallics Y1 - 2012 U6 - https://doi.org/10.1016/j.intermet.2011.11.015 SN - 0966-9795 IS - 22 SP - 231 EP - 240 ER - TY - GEN A1 - Schoder, Melanie A1 - Armbruster, Udo A1 - Martin, Andreas T1 - Heterogen katalysierte Hydrierung von Kohlendioxid zu Methan unter erhöhten Drücken T2 - Chemie Ingenieur Technik KW - Katalyse Y1 - 2013 SN - 1522-2640 VL - 85 IS - 3 SP - 344 EP - 352 ER - TY - GEN A1 - Lange, Felix A1 - Armbruster, Udo A1 - Martin, Andreas T1 - Heterogeneously-Catalyzed Hydrogenation of Carbon Dioxide to Methane using RuNi Bimetallic Catalysts T2 - Energy Technology KW - Katalyse Y1 - 2015 U6 - https://doi.org/10.1002/ente.201402113 SN - 2194-4296 VL - 3 IS - 1 SP - 55 EP - 62 ER -