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2012


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Centrality of the Mammalian Functional Brain Network

Besserve, M., Bartels, A., Murayama, Y., Logothetis, N.

42nd Annual Meeting of the Society for Neuroscience (Neuroscience), 2012 (poster)

ei

[BibTex]

2012


[BibTex]


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Kernel Mean Embeddings of POMDPs

Nishiyama, Y., Boularias, A., Gretton, A., Fukumizu, K.

21st Machine Learning Summer School , 2012 (poster)

ei

[BibTex]

[BibTex]


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Arabidopsis defense against Botrytis cinerea: chronology and regulation deciphered by high-resolution temporal transcriptomic analysis

Windram, O., Madhou, P., McHattie, S., Hill, C., Hickman, R., Cooke, E., Jenkins, DJ., Penfold, CA., Baxter, Ll., Breeze, E., Kiddle, SJ., Rhodes, J., Atwell, S., Kliebenstein, D., Kim, Y-S., Stegle, O., Borgwardt, KM., others

The Plant Cell Online, 24(9):3530-3557, 2012, all authors: Oliver Windram,Priyadharshini Madhou,Stuart McHattie,Claire Hill,Richard Hickman,Emma Cooke,Dafyd J. Jenkins,Christopher A. Penfold,Laura Baxter,Emily Breeze,Steven J. Kiddle,Johanna Rhodes,Susanna Atwell,Daniel J. (article)

ei

Web DOI [BibTex]

Web DOI [BibTex]


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Improved Linear Mixed Models for Genome-Wide Association Studies

Listgarten, J., Lippert, C., Kadie, CM., Davidson, RI., Eskin, E., Heckerman, D.

Nature Methods, 9, pages: 525–526, 2012 (article)

ei

DOI [BibTex]

DOI [BibTex]


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Calibration of Boltzmann distribution priors in Bayesian data analysis

Mechelke, M., Habeck, M.

Physical Review E, 86(6):066705, 2012 (article)

ei

DOI [BibTex]

DOI [BibTex]


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CSB: A Python framework for computational structural biology

Kalev, I., Mechelke, M., Kopec, K., Holder, T., Carstens, S., Habeck, M.

Bioinformatics, 28(22):2996-2997, 2012 (article)

Abstract
Summary: Computational Structural Biology Toolbox (CSB) is a cross-platform Python class library for reading, storing and analyzing biomolecular structures with rich support for statistical analyses. CSB is designed for reusability and extensibility and comes with a clean, well-documented API following good object-oriented engineering practice. Availability: Stable release packages are available for download from the Python Package Index (PyPI), as well as from the project’s web site http://csb.codeplex.com.

ei

Web DOI [BibTex]

Web DOI [BibTex]


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Semi-Supervised Domain Adaptation with Copulas

Lopez-Paz, D., Hernandez-Lobato, J., Schölkopf, B.

Neural Information Processing Systems (NIPS), 2012 (poster)

ei

PDF [BibTex]

PDF [BibTex]


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Design of a Haptic Interface for a Gastrointestinal Endoscopy Simulation

Yu, S., Woo, H. S., Son, H. I., Ahn, W., Jung, H., Lee, D. Y., Yi, S. Y.

Advanced Robotics, 26(18):2115-2143, 2012 (article)

ei

DOI [BibTex]

DOI [BibTex]


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Evaluation of Whole-Body MR-Based Attenuation Correction in Bone and Soft Tissue Lesions

Bezrukov, I., Mantlik, F., Schmidt, H., Schwenzer, N., Brendle, C., Schölkopf, B., Pichler, B.

Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC), 2012 (poster)

ei

[BibTex]

[BibTex]


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Significant global reduction of carbon uptake by water-cycle driven extreme vegetation anomalies

Zscheischler, J., Mahecha, M., von Buttlar, J., Harmeling, S., Jung, M., Randerson, J., Reichstein, M.

Nature Geoscience, 2012 (article) In revision

ei

[BibTex]

[BibTex]


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The PET Performance Measurements of A Next Generation Dedicated Small Animal PET/MR Scanner

Liu, C., Hossain, M., Bezrukov, I., Wehrl, H., Kolb, A., Judenhofer, M., Pichler, B.

World Molecular Imaging Congress (WMIC), 2012 (poster)

ei

[BibTex]

[BibTex]


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Measurement and calibration of noise bias in weak lensing galaxy shape estimation

Kacprzak, T., Zuntz, J., Rowe, B., Bridle, S., Refregier, A., Amara, A., Voigt, L., Hirsch, M.

Monthly Notices of the Royal Astronomical Society, 427(4):2711-2722, Oxford University Press, 2012 (article)

ei

DOI [BibTex]

DOI [BibTex]


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From Dynamic Movement Primitives to Associative Skill Memories

Pastor, P., Kalakrishnan, M., Meier, F., Stulp, F., Buchli, J., Theodorou, E., Schaal, S.

Robotics and Autonomous Systems, 2012 (article)

am

Project Page [BibTex]

Project Page [BibTex]


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Image analysis for cosmology: results from the GREAT10 Galaxy Challenge

Kitching, T. D., Balan, S. T., Bridle, S., Cantale, N., Courbin, F., Eifler, T., Gentile, M., Gill, M. S. S., Harmeling, S., Heymans, C., others,

Monthly Notices of the Royal Astronomical Society, 423(4):3163-3208, Oxford University Press, 2012 (article)

ei

DOI [BibTex]

DOI [BibTex]


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Fourier-transform photocurrent spectroscopy using a supercontinuum light source

Petermann, C., Beigang, R., Fischer, P.

APPLIED PHYSICS LETTERS, 100(6), 2012 (article)

Abstract
We demonstrate an implementation of frequency-encoded photocurrent spectroscopy using a super-continuum light source. The spectrally broad light is spatially dispersed and modulated with a special mechanical chopper design that permits a continuous wavelength-dependent modulation. After recombination, the light beam contains a frequency encoded spectrum which enables us to map the spectral response of a given sample in 60 ms and with a lateral resolution of 10 mu m. (C) 2012 American Institute of Physics.

pf

DOI [BibTex]

DOI [BibTex]


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Eine neue Form von Cavity Enhanced Absorption Spectroscopy

Petermann, C., Fischer, P.

DE Gruyter, 79(1), 2012, Best paper award OPTO 2011 (article)

Abstract
Wir stellen eine Kopplungsmethode für resonatorgestützte Absorptionsmessungen vor, bei der Licht durch einen im Resonator platzierten akustooptischen Modulator aktiv ein- und ausgekoppelt wird. Dies ermöglicht es Cavity-Ring-Down-Spektroskopie (CRDS) mit breitbandigen und zeitlich inkohärenten Lichtquellen niedriger spektraler Leistungsdichte durchzuführen. Das Verfahren wird zum ersten Mal mit einer breitbandigen Superkontinuum-Quelle demonstriert.

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A new coupling scheme for cavity enhanced absorption spectroscopy makes use of an intracavity acousto-optical modulator to actively switch light into (and out of) a resonator. This allows cavity ringdown spectroscopy (CRDS) to be implemented with broadband temporally incoherent light sources with low spectral power densities. The method is demonstrated for the first time using a broadband supercontinuum source. Best paper award OPTO 2011.

pf

link (url) [BibTex]

link (url) [BibTex]


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First SN Discoveries from the Dark Energy Survey

Abbott, T., Abdalla, F., Achitouv, I., Ahn, E., Aldering, G., Allam, S., Alonso, D., Amara, A., Annis, J., Antonik, M., others,

The Astronomer's Telegram, 4668, pages: 1, 2012 (article)

ei

[BibTex]

[BibTex]


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Two-dimensional autonomous microparticle manipulation strategies for magnetic microrobots in fluidic environments

Pawashe, C., Floyd, S., Diller, E., Sitti, M.

IEEE Transactions on Robotics, 28(2):467-477, IEEE, 2012 (article)

pi

Project Page [BibTex]

Project Page [BibTex]


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Variants of guided self-organization for robot control

Martius, G., Herrmann, J.

Theory in Biosci., 131(3):129-137, Springer Berlin / Heidelberg, 2012 (article)

al

link (url) DOI [BibTex]

link (url) DOI [BibTex]


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Vortex dynamics in nonparabolic potentials

Langner, H. H., Kamionka, T., Martens, M., Weigand, M., Adolff, C. F., Merkt, U., Meier, G.

{Physical Review B}, 85(17), 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Micromagnetic simulations on GPU, a case study: Vortex core switcing by high-frequency magnetic fields

Van de Wiele, B, Vansteenkiste, A., Kammerer, M., Van Waeyenberge, B., Dupré, L., De Zutter, D.

{IEEE Transactions on Magnetics}, 48(6):2068-2072, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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On the energetics of transversal and longitudinal fluctuations of atomic magnetic moments

Dietermann, F., Sandratskii, L. M., Fähnle, M.

{Journal of Magnetism and Magnetic Materials}, 324(18):2693-2695, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Gradual softening of Al-Zn alloys during high-pressure torsion

Mazilkin, A. A., Straumal, B. B., Borodachenkova, M. V., Valiev, R. Z., Kogtenkova, O. A., Baretzky, B.

{Materials Letters}, 84, pages: 63-65, North-Holland, Amsterdam, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Direct imaging of phase relation in a pair of coupled vortex oscillators

Vogel, A., Drews, A., Weigand, M., Meier, G.

{AIP Advances}, 2, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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A sensorimotor paradigm for Bayesian model selection

Genewein, T, Braun, DA

Frontiers in Human Neuroscience, 6(291):1-16, October 2012 (article)

Abstract
Sensorimotor control is thought to rely on predictive internal models in order to cope efficiently with uncertain environments. Recently, it has been shown that humans not only learn different internal models for different tasks, but that they also extract common structure between tasks. This raises the question of how the motor system selects between different structures or models, when each model can be associated with a range of different task-specific parameters. Here we design a sensorimotor task that requires subjects to compensate visuomotor shifts in a three-dimensional virtual reality setup, where one of the dimensions can be mapped to a model variable and the other dimension to the parameter variable. By introducing probe trials that are neutral in the parameter dimension, we can directly test for model selection. We found that model selection procedures based on Bayesian statistics provided a better explanation for subjects’ choice behavior than simple non-probabilistic heuristics. Our experimental design lends itself to the general study of model selection in a sensorimotor context as it allows to separately query model and parameter variables from subjects.

ei

DOI [BibTex]

DOI [BibTex]


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Three-dimensional microfiber devices that mimic physiological environments to probe cell mechanics and signaling

Ruder, W. C., Pratt, E. D., Bakhru, S., Sitti, M., Zappe, S., Cheng, C., Antaki, J. F., LeDuc, P. R.

Lab on a Chip, 12(10):1775-1779, Royal Society of Chemistry, 2012 (article)

pi

[BibTex]

[BibTex]


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Active visual search in unknown environments using uncertain semantics

Aydemir, Alper, Pronobis, Andrzej, Jensfelt, Patric, Sj, Kristoffer, Aydemir, Alper, Jensfelt, Patric, Aydemir, A, Jensfelt, P, Aydemir, A, Jensfelt, P, others

Transactions, 1, pages: 2329-2335, IEEE, 2012 (article)

pi

[BibTex]

[BibTex]


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Modelling of conductive atomic force microscope probes for scanning tunnelling microscope operation

Ozcan, O, Sitti, M

IET Micro \& Nano Letters, 7(4):329-333, IET, 2012 (article)

pi

[BibTex]

[BibTex]


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Shape memory polymer-based flexure stiffness control in a miniature flapping-wing robot

Hines, L., Arabagi, V., Sitti, M.

IEEE Transactions on Robotics, 28(4):987-990, IEEE, 2012 (article)

pi

[BibTex]

[BibTex]


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Micro-manipulation using rotational fluid flows induced by remote magnetic micro-manipulators

Ye, Z., Diller, E., Sitti, M.

Journal of Applied Physics, 112(6):064912, AIP, 2012 (article)

pi

Project Page [BibTex]

Project Page [BibTex]


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Risk-Sensitivity in Bayesian Sensorimotor Integration

Grau-Moya, J, Ortega, PA, Braun, DA

PLoS Computational Biology, 8(9):1-7, sep 2012 (article)

Abstract
Information processing in the nervous system during sensorimotor tasks with inherent uncertainty has been shown to be consistent with Bayesian integration. Bayes optimal decision-makers are, however, risk-neutral in the sense that they weigh all possibilities based on prior expectation and sensory evidence when they choose the action with highest expected value. In contrast, risk-sensitive decision-makers are sensitive to model uncertainty and bias their decision-making processes when they do inference over unobserved variables. In particular, they allow deviations from their probabilistic model in cases where this model makes imprecise predictions. Here we test for risk-sensitivity in a sensorimotor integration task where subjects exhibit Bayesian information integration when they infer the position of a target from noisy sensory feedback. When introducing a cost associated with subjects' response, we found that subjects exhibited a characteristic bias towards low cost responses when their uncertainty was high. This result is in accordance with risk-sensitive decision-making processes that allow for deviations from Bayes optimal decision-making in the face of uncertainty. Our results suggest that both Bayesian integration and risk-sensitivity are important factors to understand sensorimotor integration in a quantitative fashion.

ei

DOI [BibTex]

DOI [BibTex]


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Accurate dosimetry in scanning transmission X-ray microscopes via the cross-linking threshold dose of poly(methyl methacrylate)

Leontowich, A. F. G., Hitchcock, A. P., Tyliszczak, T., Weigand, M., Wang, J., Karunakaran, C.

{Journal of Synchrotron Radiation}, 19(6):976-987, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Biogenic potassium salt particles as seeds for secondary organic aerosal in the amazon

Pöhlker, C., Wiedemann, K. T., Sinha, B., Shiraiwa, M., Gunthe, S. S., Smith, M., Su, H., Artaxo, P., Chen, Q., Cheng, Y., Elbert, W., Gilles, M. K., Kilcoyne, A. L. D., Moffet, R. C., Weigand, M., Martin, S. T., Pöschl, U., Andreae, M. O.

{Science}, 337, pages: 1075-1078, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Metal@COFs: Covalent organic frameworks as templates for Pd nanoparticles and hydrogen storage properties of Pd@COF-102 hybrid material

Kalidindi, S. B., Oh, H., Hirscher, M., Esken, D., Wiktor, C., Turner, S., Van Tendeloo, G., Fischer, R. A.

{Chemistry-a European Journal}, 18(35):10848-10856, VCH Verlagsgesellschaft, Weinheim, Germany, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Ion beam lithography for direct patterning of high accuracy large area X-ray elements in gold on membranes

Nadzeyka, A., Peto, L., Bauerdick, S., Mayer, M., Keskinbora, K., Grévent, C., Weigand, M., Hirscher, M., Schütz, G.

{Microelectronic Engineering}, 98, pages: 198-201, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Remotely addressable magnetic composite micropumps

Diller, E., Miyashita, S., Sitti, M.

Rsc Advances, 2(9):3850-3856, Royal Society of Chemistry, 2012 (article)

pi

[BibTex]

[BibTex]


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Micro- and nanoscale fluid flow on chemical channels

Dörfler, Fabian, Rauscher, Markus, Koplik, Joel, Harting, Jens, Dietrich, S.

{Soft Matter}, 8(35):9221-9234, 2012 (article)

mms

link (url) DOI [BibTex]

link (url) DOI [BibTex]


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Novel characterization of the adsorption sites in large pore Metal-Organic Frameworks: Combination of X-ray powder diffraction and thermal desorption spectroscopy

Soleimani Dorcheh, A., Dinnebier, R. E., Kuc, A., Magdysyuk, O., Adams, F., Denysenko, D., Heine, T., Volkmer, D., Donner, W., Hirscher, M.

{Physical Chemistry Chemical Physics}, 14(37):12892-12897, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Tunnel contacts for spin injection into silicon: The Si-Co interface with and without a MgO tunnel barrier - A study by high-resolution Rutherford backscattering

Dash, S. P., Goll, D., Kopold, P., Carstanjen, H. D.

{Advances in Materials Science and Engineering}, 2012, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Fast spin-wave-mediated magnetic vortex core reversal

Kammerer, M., Stoll, H., Noske, M., Sproll, M., Weigand, M., Illg, C., Woltersdorf, G., Fähnle, M., Back, C., Schütz, G.

{Physical Review B}, 86(13), 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Deformation-driven formation of equilibrium phases in the Cu-Ni alloys

Straumal, B. B., Protasova, S. G., Mazilkin, A. A., Rabkin, E., Goll, D., Schütz, G., Baretzky, B., Valiev, R. Z.

{Journal of Materials Science}, 47, pages: 360-367, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Nanosponges for hydrogen storage

Schlichtenmayer, M., Hirscher, M.

{Journal of Materials Chemistry}, 22, pages: 10134-10143, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Magnetic and electronic properties of the interface between half metallic Fe3O4 and semiconducting ZnO

Brück, S., Paul, M., Tian, H., Müller, A., Kufer, D., Praetorius, C., Fauth, K., Audehm, P., Goering, E., Verbeeck, J., Van Tendeloo, G., Sing, M., Claessen, R.

{Applied Physics Letters}, 100, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Amorphous interlayers between crystalline grains in ferromagnetic ZnO films

Straumal, B. B., Protasova, S. G., Mazilkin, A. A., Baretzky, B., Myatiev, A. A., Straumal, P. B., Tietze, T., Schütz, G., Goering, E.

{Materials Letters}, 71, pages: 21-24, 2012 (article)

mms

DOI [BibTex]

DOI [BibTex]


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Model-free reinforcement learning of impedance control in stochastic environments

Stulp, Freek, Buchli, Jonas, Ellmer, Alice, Mistry, Michael, Theodorou, Evangelos A., Schaal, S.

Autonomous Mental Development, IEEE Transactions on, 4(4):330-341, 2012 (article)

am

[BibTex]

[BibTex]


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Shape-Programmable Soft Capsule Robots for Semi-Implantable Drug Delivery

Yim, S., Sitti, M.

Mechatronics, IEEE/ASME Transactions on, 2012 (article)

pi

Project Page [BibTex]

Project Page [BibTex]


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Control of multiple heterogeneous magnetic microrobots in two dimensions on nonspecialized surfaces

Diller, E., Floyd, S., Pawashe, C., Sitti, M.

IEEE Transactions on Robotics, 28(1):172-182, IEEE, 2012 (article)

pi

[BibTex]

[BibTex]


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Gecko-Inspired Controllable Adhesive Structures Applied to Micromanipulation

Mengüç, Y., Yang, S. Y., Kim, S., Rogers, J. A., Sitti, M.

Advanced Functional Materials, 22(6):1245-1245, WILEY-VCH Verlag, 2012 (article)

pi

Project Page [BibTex]

Project Page [BibTex]