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1144 results (View BibTeX file of all listed publications)

2000

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High-performance nanocrystalline PrFeB-based bonded permanent magnets

Goll, D., Kleinschroth, I., Kronmüller, H.

In Proceedings of the 16th International Workshop on Rare-Earth Magnets and Their Applications, pages: 641-650, Japan Institute of Metals, 2000 (inproceedings)

mms

[BibTex]

2000

mms Goll, D., Kleinschroth, I., Kronmüller, H. High-performance nanocrystalline PrFeB-based bonded permanent magnets In Proceedings of the 16th International Workshop on Rare-Earth Magnets and Their Applications, pages: 641-650, Japan Institute of Metals, 2000 (inproceedings)

[BibTex]

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High-performance permanent magnets

Goll, D., Kronmüller, H.

{Naturwissenschaften}, 87, pages: 423-438, 2000 (article)

mms

[BibTex]

mms Goll, D., Kronmüller, H. High-performance permanent magnets {Naturwissenschaften}, 87, pages: 423-438, 2000 (article)

[BibTex]

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Age-momentum correlation (AMOC)

Stoll, H.

In Construction and Use of an Intense Positron Source at new Linac Facilities in Germany, FZR-295, pages: 44-49, Wissenschaftlich-Technische Berichte, 2000 (incollection)

mms

[BibTex]

mms Stoll, H. Age-momentum correlation (AMOC) In Construction and Use of an Intense Positron Source at new Linac Facilities in Germany, FZR-295, pages: 44-49, Wissenschaftlich-Technische Berichte, 2000 (incollection)

[BibTex]

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Nonlinear magnetoelastic coupling coefficients from simultaneous measurements of magnetostrictive stress and anisotropy in epitaxial magnetic films

Fähnle, M., Komelj, M.

{Journal of Applied Physics}, 88, pages: 2781-2786, 2000 (article)

mms

[BibTex]

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Reconstruction of the Mo(100) surface: a tight-binding study

Haas, H., Wang, C. Z., Ho, K. M., Fähnle, M., Elsässer, C.

{Surface Science}, 457, pages: L397-L403, 2000 (article)

mms

[BibTex]

mms Haas, H., Wang, C. Z., Ho, K. M., Fähnle, M., Elsässer, C. Reconstruction of the Mo(100) surface: a tight-binding study {Surface Science}, 457, pages: L397-L403, 2000 (article)

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The strain-softening phenomenon of icosahedral Al-Pd-Mn single quasicrystals

Brunner, D., Plachke, D., Carstanjen, H. D.

{Materials Science and Engineering A}, 294-296, pages: 773-776, 2000 (article)

mms

[BibTex]

mms Brunner, D., Plachke, D., Carstanjen, H. D. The strain-softening phenomenon of icosahedral Al-Pd-Mn single quasicrystals {Materials Science and Engineering A}, 294-296, pages: 773-776, 2000 (article)

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Corrosion behaviour of the protective and decorative TiN coatings on large area steel strips

Vershinin, N., Filonov, K., Straumal, B., Gust, W., Wiener, I., Rabkin, E., Kazakevich, A.

{Surface and Coatings Technology}, 125, pages: 229-232, 2000 (article)

mms

[BibTex]

mms Vershinin, N., Filonov, K., Straumal, B., Gust, W., Wiener, I., Rabkin, E., Kazakevich, A. Corrosion behaviour of the protective and decorative TiN coatings on large area steel strips {Surface and Coatings Technology}, 125, pages: 229-232, 2000 (article)

[BibTex]

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Investigation of Virtual Reality Interface for AFM-based Nano Manipulation

Horiguchi, S., Sitti, M., Hashimoto, H.

IEEJ Transactions on Electronics, Information and Systems, 120(12):1948-1956, The Institute of Electrical Engineers of Japan, 2000 (article)

pi

[BibTex]

pi Horiguchi, S., Sitti, M., Hashimoto, H. Investigation of Virtual Reality Interface for AFM-based Nano Manipulation IEEJ Transactions on Electronics, Information and Systems, 120(12):1948-1956, The Institute of Electrical Engineers of Japan, 2000 (article)

[BibTex]

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Fast learning of biomimetic oculomotor control with nonparametric regression networks

Shibata, T., Schaal, S.

In International Conference on Robotics and Automation (ICRA2000), pages: 3847-3854, San Francisco, April 2000, 2000, clmc (inproceedings)

Abstract
Accurate oculomotor control is one of the essential pre-requisites of successful visuomotor coordination. Given the variable nonlinearities of the geometry of binocular vision as well as the possible nonlinearities of the oculomotor plant, it is desirable to accomplish accurate oculomotor control through learning approaches. In this paper, we investigate learning control for a biomimetic active vision system mounted on a humanoid robot. By combining a biologically inspired cerebellar learning scheme with a state-of-the-art statistical learning network, our robot system is able to acquire high performance visual stabilization reflexes after about 40 seconds of learning despite significant nonlinearities and processing delays in the system.

am

link (url) [BibTex]

am Shibata, T., Schaal, S. Fast learning of biomimetic oculomotor control with nonparametric regression networks In International Conference on Robotics and Automation (ICRA2000), pages: 3847-3854, San Francisco, April 2000, 2000, clmc (inproceedings)

link (url) [BibTex]

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Interaction of rhythmic and discrete pattern generators in single joint movements

Sternad, D., Dean, W. J., Schaal, S.

Human Movement Science, 19(4):627-665, 2000, clmc (article)

Abstract
The study investigates a single-joint movement task that combines a translatory and cyclic component with the objective to investigate the interaction of discrete and rhythmic movement elements. Participants performed an elbow movement in the horizontal plane, oscillating at a prescribed frequency around one target and shifting to a second target upon a trigger signal, without stopping the oscillation. Analyses focused on extracting the mutual influences of the rhythmic and the discrete component of the task. Major findings are: (1) The onset of the discrete movement was confined to a limited phase window in the rhythmic cycle. (2) Its duration was influenced by the period of oscillation. (3) The rhythmic oscillation was "perturbed" by the discrete movement as indicated by phase resetting. On the basis of these results we propose a model for the coordination of discrete and rhythmic actions (K. Matsuoka, Sustained oscillations generated by mutually inhibiting neurons with adaptations, Biological Cybernetics 52 (1985) 367-376; Mechanisms of frequency and pattern control in the neural rhythm generators, Biological Cybernetics 56 (1987) 345-353). For rhythmic movements an oscillatory pattern generator is developed following models of half-center oscillations (D. Bullock, S. Grossberg, The VITE model: a neural command circuit for generating arm and articulated trajectories, in: J.A.S. Kelso, A.J. Mandel, M. F. Shlesinger (Eds.), Dynamic Patterns in Complex Systems. World Scientific. Singapore. 1988. pp. 305-326). For discrete movements a point attractor dynamics is developed close to the VITE model For each joint degree of freedom both pattern generators co-exist but exert mutual inhibition onto each other. The suggested modeling framework provides a unified account for both discrete and rhythmic movements on the basis of neuronal circuitry. Simulation results demonstrated that the effects observed in human performance can be replicated using the two pattern generators with a mutually inhibiting coupling.

am

link (url) [BibTex]

am Sternad, D., Dean, W. J., Schaal, S. Interaction of rhythmic and discrete pattern generators in single joint movements Human Movement Science, 19(4):627-665, 2000, clmc (article)

link (url) [BibTex]

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Locally weighted projection regression: An O(n) algorithm for incremental real time learning in high dimensional spaces

Vijayakumar, S., Schaal, S.

In Proceedings of the Seventeenth International Conference on Machine Learning (ICML 2000), 1, pages: 288-293, Stanford, CA, 2000, clmc (inproceedings)

Abstract
Locally weighted projection regression is a new algorithm that achieves nonlinear function approximation in high dimensional spaces with redundant and irrelevant input dimensions. At its core, it uses locally linear models, spanned by a small number of univariate regressions in selected directions in input space. This paper evaluates different methods of projection regression and derives a nonlinear function approximator based on them. This nonparametric local learning system i) learns rapidly with second order learning methods based on incremental training, ii) uses statistically sound stochastic cross validation to learn iii) adjusts its weighting kernels based on local information only, iv) has a computational complexity that is linear in the number of inputs, and v) can deal with a large number of - possibly redundant - inputs, as shown in evaluations with up to 50 dimensional data sets. To our knowledge, this is the first truly incremental spatially localized learning method to combine all these properties.

am

link (url) [BibTex]

am Vijayakumar, S., Schaal, S. Locally weighted projection regression: An O(n) algorithm for incremental real time learning in high dimensional spaces In Proceedings of the Seventeenth International Conference on Machine Learning (ICML 2000), 1, pages: 288-293, Stanford, CA, 2000, clmc (inproceedings)

link (url) [BibTex]

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Experimental and theoretical study of the Verwey transition in magnetite

Brabers, V. A. M., Brabers, J. H. V. J., Walz, F., Kronmüller, H.

In Proceedings 8th International Conference on Ferrites, pages: 123-125, Japan Society of Powder and Powder Metallurgy, 2000 (inproceedings)

mms

[BibTex]

mms Brabers, V. A. M., Brabers, J. H. V. J., Walz, F., Kronmüller, H. Experimental and theoretical study of the Verwey transition in magnetite In Proceedings 8th International Conference on Ferrites, pages: 123-125, Japan Society of Powder and Powder Metallurgy, 2000 (inproceedings)

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Influence of substrate irradiation on critical density and microstructure in YBCO thin films

Leonhardt, S., Albrecht, J., Warthmann, R., Habermeier, H.-U., Kronmüller, H.

{Physica C}, 341-348, pages: 1979-1980, 2000 (article)

mms

[BibTex]

mms Leonhardt, S., Albrecht, J., Warthmann, R., Habermeier, H.-U., Kronmüller, H. Influence of substrate irradiation on critical density and microstructure in YBCO thin films {Physica C}, 341-348, pages: 1979-1980, 2000 (article)

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Channeling of high-energy particles in bent crystals - experiments at the CERN SPS

Baurichter, A., Biino, C., Clement, M., Doble, N., Elsener, K., Fidecaro, G., Freund, A., Gatignon, L., Grafström, P., Gyr, M., Hage-Ali, M., Herr, W., Keppler, P., Kirsebom, K., Klem, J., Major, J., Medenwaldt, R., Mikkelsen, U., Moller, S. P., Siffert, P., Uggerhoj, E., Vilakazi, Z. Z., Weisse, E.

{Nuclear Instruments and Methods in Physics Research B}, 164-165, pages: 27-43, 2000 (article)

mms

[BibTex]

mms Baurichter, A., Biino, C., Clement, M., Doble, N., Elsener, K., Fidecaro, G., Freund, A., Gatignon, L., Grafström, P., Gyr, M., Hage-Ali, M., Herr, W., Keppler, P., Kirsebom, K., Klem, J., Major, J., Medenwaldt, R., Mikkelsen, U., Moller, S. P., Siffert, P., Uggerhoj, E., Vilakazi, Z. Z., Weisse, E. Channeling of high-energy particles in bent crystals - experiments at the CERN SPS {Nuclear Instruments and Methods in Physics Research B}, 164-165, pages: 27-43, 2000 (article)

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Evolution of microstructure and microchemistry in the high-temperature Sm(Co, Fe, Cu, Zr)z magnets

Zhang, Y. W., Hadjipanayis, G. C., Goll, D., Kronmüller, H., Chen, C., Nelson, C., Krishnan, K.

In Proceedings of the 16th International Workshop on Rare-Earth Magnets and Their Applications, pages: 169-178, Sendai, Japan, 2000 (inproceedings)

mms

[BibTex]

mms Zhang, Y. W., Hadjipanayis, G. C., Goll, D., Kronmüller, H., Chen, C., Nelson, C., Krishnan, K. Evolution of microstructure and microchemistry in the high-temperature Sm(Co, Fe, Cu, Zr)z magnets In Proceedings of the 16th International Workshop on Rare-Earth Magnets and Their Applications, pages: 169-178, Sendai, Japan, 2000 (inproceedings)

[BibTex]

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Magnetoelastic effects in ultrathin epitaxial Ni films: An ab-initio study

Komelj, M., Fähnle, M.

{Journal of Magnetism and Magnetic Materials}, 222, pages: L 245-L 250, 2000 (article)

mms

[BibTex]

mms Komelj, M., Fähnle, M. Magnetoelastic effects in ultrathin epitaxial Ni films: An ab-initio study {Journal of Magnetism and Magnetic Materials}, 222, pages: L 245-L 250, 2000 (article)

[BibTex]

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Evidence for near-grain boundary lattice rotations in an Fe(Si) alloy.

Rabkin, E., Semenov, V., Bischoff, E.

{Zeitschrift f\"ur Metallkunde}, 91, pages: 165-170, 2000 (article)

mms

[BibTex]

mms Rabkin, E., Semenov, V., Bischoff, E. Evidence for near-grain boundary lattice rotations in an Fe(Si) alloy. {Zeitschrift f\"ur Metallkunde}, 91, pages: 165-170, 2000 (article)

[BibTex]

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Fundamental investigations and industrial applications of magnetostriction

Hirscher, M., Fischer, S. F., Reininger, T.

In Modern Trends in Magnetostriction Study and Application. Proceedings of the NATO Advanced Study Institute on Modern Trends in Magnetostriction, 5, pages: 307-329, NATO Science Series: II: Mathematics, Physics and Chemistry, Kluwer Academic Publishers, Kyiv, Ukraine, 2000 (inproceedings)

mms

[BibTex]

mms Hirscher, M., Fischer, S. F., Reininger, T. Fundamental investigations and industrial applications of magnetostriction In Modern Trends in Magnetostriction Study and Application. Proceedings of the NATO Advanced Study Institute on Modern Trends in Magnetostriction, 5, pages: 307-329, NATO Science Series: II: Mathematics, Physics and Chemistry, Kluwer Academic Publishers, Kyiv, Ukraine, 2000 (inproceedings)

[BibTex]

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Electron focusing in metals and semimetals

Heil, J., Böhm, A., Gröger, A., Primke, M., Wyder, P., Keppler, P., Major, J., Bender, H., Schönherr, E., Wendel, H., Wolf, B., Würz, U., Grill, W., Herrenberger, S., Knauth, S., Lenzner, J.

{Physics Reports}, 323, pages: 387-455, 2000 (article)

mms

[BibTex]

mms Heil, J., Böhm, A., Gröger, A., Primke, M., Wyder, P., Keppler, P., Major, J., Bender, H., Schönherr, E., Wendel, H., Wolf, B., Würz, U., Grill, W., Herrenberger, S., Knauth, S., Lenzner, J. Electron focusing in metals and semimetals {Physics Reports}, 323, pages: 387-455, 2000 (article)

[BibTex]

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Analysis of the electronic structure of intermetallic compounds and application to structural defects in B2 phases

Börnsen, N., Meyer, B., Bester, G., Fähnle, M.

{Journal of Alloys and Compounds}, 308, pages: 1-14, 2000 (article)

mms

[BibTex]

mms Börnsen, N., Meyer, B., Bester, G., Fähnle, M. Analysis of the electronic structure of intermetallic compounds and application to structural defects in B2 phases {Journal of Alloys and Compounds}, 308, pages: 1-14, 2000 (article)

[BibTex]

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Melt-spun precipitation-hardened Sm2(Co,Cu,Fe,Zr)17 magnets with abnormal temperature dependence of coercivity

Goll, D., Kleinschroth, I., Sigle, W., Kronmüller, H.

{Applied Physics Letters}, 76, pages: 1054-1056, 2000 (article)

mms

[BibTex]

mms Goll, D., Kleinschroth, I., Sigle, W., Kronmüller, H. Melt-spun precipitation-hardened Sm2(Co,Cu,Fe,Zr)17 magnets with abnormal temperature dependence of coercivity {Applied Physics Letters}, 76, pages: 1054-1056, 2000 (article)

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Hydrogen-induced phase transition of GdZn1-xMgx compounds

Reule, H., Hirscher, M.

{Journal of Alloys and Compounds}, 298, pages: 1-8, 2000 (article)

mms

[BibTex]

mms Reule, H., Hirscher, M. Hydrogen-induced phase transition of GdZn1-xMgx compounds {Journal of Alloys and Compounds}, 298, pages: 1-8, 2000 (article)

[BibTex]

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The influence of a finite bandwidth on the Verwey transition in magnetite

Brabers, J. H. V. J., Walz, F., Kronmüller, H.

{Journal of Physics: Condensed Matter}, 12, pages: 5437-5452, 2000 (article)

mms

[BibTex]

mms Brabers, J. H. V. J., Walz, F., Kronmüller, H. The influence of a finite bandwidth on the Verwey transition in magnetite {Journal of Physics: Condensed Matter}, 12, pages: 5437-5452, 2000 (article)

[BibTex]

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Dynamics of a bouncing ball in human performance

Sternad, D., Duarte, M., Katsumata, H., Schaal, S.

Physical Review E, 63(011902):1-8, 2000, clmc (article)

Abstract
On the basis of a modified bouncing-ball model, we investigated whether human movements utilize principles of dynamic stability in their performance of a similar movement task. Stability analyses of the model provided predictions about conditions indicative of a dynamically stable period-one regime. In a series of experiments, human subjects bounced a ball rhythmically on a racket and displayed these conditions supporting that they attuned to and exploited the dynamic stability properties of the task.

am

link (url) [BibTex]

am Sternad, D., Duarte, M., Katsumata, H., Schaal, S. Dynamics of a bouncing ball in human performance Physical Review E, 63(011902):1-8, 2000, clmc (article)

link (url) [BibTex]

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Inverse kinematics for humanoid robots

Tevatia, G., Schaal, S.

In International Conference on Robotics and Automation (ICRA2000), pages: 294-299, San Fransisco, April 24-28, 2000, 2000, clmc (inproceedings)

Abstract
Real-time control of the endeffector of a humanoid robot in external coordinates requires computationally efficient solutions of the inverse kinematics problem. In this context, this paper investigates methods of resolved motion rate control (RMRC) that employ optimization criteria to resolve kinematic redundancies. In particular we focus on two established techniques, the pseudo inverse with explicit optimization and the extended Jacobian method. We prove that the extended Jacobian method includes pseudo-inverse methods as a special solution. In terms of computational complexity, however, pseudo-inverse and extended Jacobian differ significantly in favor of pseudo-inverse methods. Employing numerical estimation techniques, we introduce a computationally efficient version of the extended Jacobian with performance comparable to the original version . Our results are illustrated in simulation studies with a multiple degree-of-freedom robot, and were tested on a 30 degree-of-freedom robot. 

am

link (url) [BibTex]

am Tevatia, G., Schaal, S. Inverse kinematics for humanoid robots In International Conference on Robotics and Automation (ICRA2000), pages: 294-299, San Fransisco, April 24-28, 2000, 2000, clmc (inproceedings)

link (url) [BibTex]

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Fast and efficient incremental learning for high-dimensional movement systems

Vijayakumar, S., Schaal, S.

In International Conference on Robotics and Automation (ICRA2000), San Francisco, April 2000, 2000, clmc (inproceedings)

Abstract
We introduce a new algorithm, Locally Weighted Projection Regression (LWPR), for incremental real-time learning of nonlinear functions, as particularly useful for problems of autonomous real-time robot control that re-quires internal models of dynamics, kinematics, or other functions. At its core, LWPR uses locally linear models, spanned by a small number of univariate regressions in selected directions in input space, to achieve piecewise linear function approximation. The most outstanding properties of LWPR are that it i) learns rapidly with second order learning methods based on incremental training, ii) uses statistically sound stochastic cross validation to learn iii) adjusts its local weighting kernels based on only local information to avoid interference problems, iv) has a computational complexity that is linear in the number of inputs, and v) can deal with a large number ofâ??possibly redundant and/or irrelevantâ??inputs, as shown in evaluations with up to 50 dimensional data sets for learning the inverse dynamics of an anthropomorphic robot arm. To our knowledge, this is the first incremental neural network learning method to combine all these properties and that is well suited for complex on-line learning problems in robotics.

am

link (url) [BibTex]

am Vijayakumar, S., Schaal, S. Fast and efficient incremental learning for high-dimensional movement systems In International Conference on Robotics and Automation (ICRA2000), San Francisco, April 2000, 2000, clmc (inproceedings)

link (url) [BibTex]

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Macro to Nano Tele-Manipulation Towards Nanoelectromec hanical Systems

Sitti, M., Hashimoto, H.

Journal of Robotics and Mechatronics, 12(3):209-217, FUJI TECHNOLOGY PRESS LTD., 2000 (article)

pi

[BibTex]

pi Sitti, M., Hashimoto, H. Macro to Nano Tele-Manipulation Towards Nanoelectromec hanical Systems Journal of Robotics and Mechatronics, 12(3):209-217, FUJI TECHNOLOGY PRESS LTD., 2000 (article)

[BibTex]

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Untersuchung von Magnetisierungsprozessen in dünnen Nd2Fe14B-Schichten

Melsheimer, A.

Universität Stuttgart, Stuttgart, 2000 (phdthesis)

mms

[BibTex]

mms Melsheimer, A. Untersuchung von Magnetisierungsprozessen in dünnen Nd2Fe14B-Schichten Universität Stuttgart, Stuttgart, 2000 (phdthesis)

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Influcence of vortex-vortex interaction on critical currents across low-angle grain boundaries in YBa2Cu3O7-δ

Albrecht, J., Leonhardt, S., Kronmüller, H.

{Physical Review B}, 63, 2000 (article)

mms

[BibTex]

mms Albrecht, J., Leonhardt, S., Kronmüller, H. Influcence of vortex-vortex interaction on critical currents across low-angle grain boundaries in YBa2Cu3O7-δ {Physical Review B}, 63, 2000 (article)

[BibTex]

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Symmetrical Tilt Grain boundaries in body-centred cubic transition metals: An ab-initio local-density-functional study

Ochs, T., Beck, O., Elsässer, C., Meyer, B.

{Philosophical Magazine A}, 80, pages: 351-372, 2000 (article)

mms

[BibTex]

mms Ochs, T., Beck, O., Elsässer, C., Meyer, B. Symmetrical Tilt Grain boundaries in body-centred cubic transition metals: An ab-initio local-density-functional study {Philosophical Magazine A}, 80, pages: 351-372, 2000 (article)

[BibTex]

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The liquid ferromagnet Co80Pd20 and its critical exponent γ

Bührer, C., Beckmann, M., Fähnle, M., Maier, K.

{Journal of Magnetism and Magnetic Materials}, 212, pages: 211-224, 2000 (article)

mms

[BibTex]

mms Bührer, C., Beckmann, M., Fähnle, M., Maier, K. The liquid ferromagnet Co80Pd20 and its critical exponent γ {Journal of Magnetism and Magnetic Materials}, 212, pages: 211-224, 2000 (article)

[BibTex]

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Irreversible magnetization processes in a soft magnetic platelet

Hertel, R., Kronmüller, H.

{Physica B}, 275, pages: 1-4, 2000 (article)

mms

[BibTex]

mms Hertel, R., Kronmüller, H. Irreversible magnetization processes in a soft magnetic platelet {Physica B}, 275, pages: 1-4, 2000 (article)

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Micromagnetic and microstructural analysis of the temperature dependence of the coercive field of Sm2(Co, Cu, Fe, Zr)17 permanent magnets

Goll, D., Sigle, W., Hadjipanayis, G. C., Kronmüller, H.

In Proceedings of the 16th International Workshop on Rare-Earth Magnets and Their Applications, pages: 61-70, Kaneko, H.; Homma, M.; Okada, M., 2000 (inproceedings)

mms

[BibTex]

mms Goll, D., Sigle, W., Hadjipanayis, G. C., Kronmüller, H. Micromagnetic and microstructural analysis of the temperature dependence of the coercive field of Sm2(Co, Cu, Fe, Zr)17 permanent magnets In Proceedings of the 16th International Workshop on Rare-Earth Magnets and Their Applications, pages: 61-70, Kaneko, H.; Homma, M.; Okada, M., 2000 (inproceedings)

[BibTex]

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Measurement of the Zener relaxation in high-purity FeCr single crystals

Hirscher, M., Brossmann, U., Henes, R.

{Materials Transactions, JIM}, 41, pages: 82-86, 2000 (article)

mms

[BibTex]

mms Hirscher, M., Brossmann, U., Henes, R. Measurement of the Zener relaxation in high-purity FeCr single crystals {Materials Transactions, JIM}, 41, pages: 82-86, 2000 (article)

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Ab-initio statistical mechanics for alloy phase diagrams and ordering phenomena including the effect of vacancies

Lechermann, F., Fähnle, M.

{Physical Review B}, 63, 2000 (article)

mms

[BibTex]

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MeV Positron Beams

Stoll, H.

In Positron Beams and Their Applications, pages: 237-257, World Scientific, Singapore, 2000 (incollection)

mms

[BibTex]

mms Stoll, H. MeV Positron Beams In Positron Beams and Their Applications, pages: 237-257, World Scientific, Singapore, 2000 (incollection)

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Reactions in TiO2/Ti3Al and TiO2/TiAl bilayers: Application of target-factor analysis in auger electron spectroscopy

van Lier, J., Baretzky, B., Zalar, A., Mittemeijer, E. J.

{Surface and Interface Analysis}, 30, pages: 124-129, 2000 (article)

mms

[BibTex]

mms van Lier, J., Baretzky, B., Zalar, A., Mittemeijer, E. J. Reactions in TiO2/Ti3Al and TiO2/TiAl bilayers: Application of target-factor analysis in auger electron spectroscopy {Surface and Interface Analysis}, 30, pages: 124-129, 2000 (article)

[BibTex]

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Ab-initio treatment of noncollinear spin systems within the atomic-sphere approximation and beyond

Grotheer, O., Ederer, C., Fähnle, M.

{Physical Review B}, 62, pages: 5601-5608, 2000 (article)

mms

[BibTex]

mms Grotheer, O., Ederer, C., Fähnle, M. Ab-initio treatment of noncollinear spin systems within the atomic-sphere approximation and beyond {Physical Review B}, 62, pages: 5601-5608, 2000 (article)

[BibTex]

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On-line learning for humanoid robot systems

Conradt, J., Tevatia, G., Vijayakumar, S., Schaal, S.

In Proceedings of the Seventeenth International Conference on Machine Learning (ICML 2000), 1, pages: 191-198, Stanford, CA, 2000, clmc (inproceedings)

Abstract
Humanoid robots are high-dimensional movement systems for which analytical system identification and control methods are insufficient due to unknown nonlinearities in the system structure. As a way out, supervised learning methods can be employed to create model-based nonlinear controllers which use functions in the control loop that are estimated by learning algorithms. However, internal models for humanoid systems are rather high-dimensional such that conventional learning algorithms would suffer from slow learning speed, catastrophic interference, and the curse of dimensionality. In this paper we explore a new statistical learning algorithm, locally weighted projection regression (LWPR), for learning internal models in real-time. LWPR is a nonparametric spatially localized learning system that employs the less familiar technique of partial least squares regression to represent functional relationships in a piecewise linear fashion. The algorithm can work successfully in very high dimensional spaces and detect irrelevant and redundant inputs while only requiring a computational complexity that is linear in the number of input dimensions. We demonstrate the application of the algorithm in learning two classical internal models of robot control, the inverse kinematics and the inverse dynamics of an actual seven degree-of-freedom anthropomorphic robot arm. For both examples, LWPR can achieve excellent real-time learning results from less than one hour of actual training data.

am

link (url) [BibTex]

am Conradt, J., Tevatia, G., Vijayakumar, S., Schaal, S. On-line learning for humanoid robot systems In Proceedings of the Seventeenth International Conference on Machine Learning (ICML 2000), 1, pages: 191-198, Stanford, CA, 2000, clmc (inproceedings)

link (url) [BibTex]

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Humanoid Robot DB

Kotosaka, S., Shibata, T., Schaal, S.

In Proceedings of the International Conference on Machine Automation (ICMA2000), pages: 21-26, 2000, clmc (inproceedings)

am

[BibTex]

am Kotosaka, S., Shibata, T., Schaal, S. Humanoid Robot DB In Proceedings of the International Conference on Machine Automation (ICMA2000), pages: 21-26, 2000, clmc (inproceedings)

[BibTex]

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Wing transmission for a micromechanical flying insect

Fearing, R. S., Chiang, K. H., Dickinson, M. H., Pick, D., Sitti, M., Yan, J.

In Robotics and Automation, 2000. Proceedings. ICRA’00. IEEE International Conference on, 2, pages: 1509-1516, 2000 (inproceedings)

pi

[BibTex]

pi Fearing, R. S., Chiang, K. H., Dickinson, M. H., Pick, D., Sitti, M., Yan, J. Wing transmission for a micromechanical flying insect In Robotics and Automation, 2000. Proceedings. ICRA’00. IEEE International Conference on, 2, pages: 1509-1516, 2000 (inproceedings)

[BibTex]

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Is d-Al-Cu-Co a random tiling?

Zeger, G., Plachke, D., Carstanjen, H. D., Trebin, H. R.

{Materials Science and Engineering A}, 294, pages: 291-294, 2000 (article)

mms

[BibTex]

mms Zeger, G., Plachke, D., Carstanjen, H. D., Trebin, H. R. Is d-Al-Cu-Co a random tiling? {Materials Science and Engineering A}, 294, pages: 291-294, 2000 (article)

[BibTex]

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Nonlinear magnetoelastic coupling coefficients in Fe from an ab-initio calculation

Komelj, M., Fähnle, M.

{Journal of Magnetism and Magnetic Materials}, 220, pages: L 7-L 12, 2000 (article)

mms

[BibTex]

mms Komelj, M., Fähnle, M. Nonlinear magnetoelastic coupling coefficients in Fe from an ab-initio calculation {Journal of Magnetism and Magnetic Materials}, 220, pages: L 7-L 12, 2000 (article)

[BibTex]

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Current densities in low-angle grain boundaries of YBCO

Albrecht, J., Warthmann, R., Leonhardt, S., Kronmüller, H.

{Physica C}, 341-348, pages: 1459-1460, 2000 (article)

mms

[BibTex]

mms Albrecht, J., Warthmann, R., Leonhardt, S., Kronmüller, H. Current densities in low-angle grain boundaries of YBCO {Physica C}, 341-348, pages: 1459-1460, 2000 (article)

[BibTex]

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The hydrogen desorption kinetics of Pd-coated LaNi5-type films

Cuevas, F., Hirscher, M.

{Journal of Alloys and Compounds}, 313, pages: 269-275, 2000 (article)

mms

[BibTex]

mms Cuevas, F., Hirscher, M. The hydrogen desorption kinetics of Pd-coated LaNi5-type films {Journal of Alloys and Compounds}, 313, pages: 269-275, 2000 (article)

[BibTex]

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The structure of the trihydride GdH3

Ellner, M., Reule, H., Mittemeijer, E. J.

{Journal of Alloys and Compounds}, 309, pages: 127-131, 2000 (article)

mms

[BibTex]

mms Ellner, M., Reule, H., Mittemeijer, E. J. The structure of the trihydride GdH3 {Journal of Alloys and Compounds}, 309, pages: 127-131, 2000 (article)

[BibTex]

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Corrosion resistance of the vacuum arc deposited Ti, TiN and TiO2 coatings on large area glass substrates

Vershinin, N., Filonov, K., Straumal, B., Gust, W., Dimitriou, R., Kovalev, A., Camacho, J.

{Surface and Coatings Technology}, 125, pages: 223-228, 2000 (article)

mms

[BibTex]

mms Vershinin, N., Filonov, K., Straumal, B., Gust, W., Dimitriou, R., Kovalev, A., Camacho, J. Corrosion resistance of the vacuum arc deposited Ti, TiN and TiO2 coatings on large area glass substrates {Surface and Coatings Technology}, 125, pages: 223-228, 2000 (article)

[BibTex]

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Is the insulator-metal transition in perovskites associated with the bulk magnetic phase transition?

Baszynski, J., Walz, F., Tolinski, T.

{Sensors and Actuators}, 81, pages: 37-39, 2000 (article)

mms

[BibTex]

mms Baszynski, J., Walz, F., Tolinski, T. Is the insulator-metal transition in perovskites associated with the bulk magnetic phase transition? {Sensors and Actuators}, 81, pages: 37-39, 2000 (article)

[BibTex]