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64 results (View BibTeX file of all listed publications)

2004

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On the representation, learning and transfer of spatio-temporal movement characteristics

Ilg, W., Bakir, GH., Mezger, J., Giese, M.

International Journal of Humanoid Robotics, 1(4):613-636, December 2004 (article)

ei

[BibTex]

2004

ei Ilg, W., Bakir, GH., Mezger, J., Giese, M. On the representation, learning and transfer of spatio-temporal movement characteristics International Journal of Humanoid Robotics, 1(4):613-636, December 2004 (article)

[BibTex]

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Insect-inspired estimation of egomotion

Franz, MO., Chahl, JS., Krapp, HG.

Neural Computation, 16(11):2245-2260, November 2004 (article)

Abstract
Tangential neurons in the fly brain are sensitive to the typical optic flow patterns generated during egomotion. In this study, we examine whether a simplified linear model based on the organization principles in tangential neurons can be used to estimate egomotion from the optic flow. We present a theory for the construction of an estimator consisting of a linear combination of optic flow vectors that incorporates prior knowledge both about the distance distribution of the environment, and about the noise and egomotion statistics of the sensor. The estimator is tested on a gantry carrying an omnidirectional vision sensor. The experiments show that the proposed approach leads to accurate and robust estimates of rotation rates, whereas translation estimates are of reasonable quality, albeit less reliable.

ei

PDF PostScript Web DOI [BibTex]

ei Franz, MO., Chahl, JS., Krapp, HG. Insect-inspired estimation of egomotion Neural Computation, 16(11):2245-2260, November 2004 (article)

PDF PostScript Web DOI [BibTex]

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Efficient face detection by a cascaded support-vector machine expansion

Romdhani, S., Torr, P., Schölkopf, B., Blake, A.

Proceedings of The Royal Society of London A, 460(2501):3283-3297, A, November 2004 (article)

Abstract
We describe a fast system for the detection and localization of human faces in images using a nonlinear ‘support-vector machine‘. We approximate the decision surface in terms of a reduced set of expansion vectors and propose a cascaded evaluation which has the property that the full support-vector expansion is only evaluated on the face-like parts of the image, while the largest part of typical images is classified using a single expansion vector (a simpler and more efficient classifier). As a result, only three reduced-set vectors are used, on average, to classify an image patch. Hence, the cascaded evaluation, presented in this paper, offers a thirtyfold speed-up over an evaluation using the full set of reduced-set vectors, which is itself already thirty times faster than classification using all the support vectors.

ei

PDF DOI [BibTex]

ei Romdhani, S., Torr, P., Schölkopf, B., Blake, A. Efficient face detection by a cascaded support-vector machine expansion Proceedings of The Royal Society of London A, 460(2501):3283-3297, A, November 2004 (article)

PDF DOI [BibTex]

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Learning kernels from biological networks by maximizing entropy

Tsuda, K., Noble, W.

Bioinformatics, 20(Suppl. 1):i326-i333, August 2004 (article)

Abstract
Motivation: The diffusion kernel is a general method for computing pairwise distances among all nodes in a graph, based on the sum of weighted paths between each pair of nodes. This technique has been used successfully, in conjunction with kernel-based learning methods, to draw inferences from several types of biological networks. Results: We show that computing the diffusion kernel is equivalent to maximizing the von Neumann entropy, subject to a global constraint on the sum of the Euclidean distances between nodes. This global constraint allows for high variance in the pairwise distances. Accordingly, we propose an alternative, locally constrained diffusion kernel, and we demonstrate that the resulting kernel allows for more accurate support vector machine prediction of protein functional classifications from metabolic and protein–protein interaction networks.

ei

PDF Web [BibTex]

ei Tsuda, K., Noble, W. Learning kernels from biological networks by maximizing entropy Bioinformatics, 20(Suppl. 1):i326-i333, August 2004 (article)

PDF Web [BibTex]

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Masking effect produced by Mach bands on the detection of narrow bars of random polarity

Henning, GB., Hoddinott, KT., Wilson-Smith, ZJ., Hill, NJ.

Journal of the Optical Society of America, 21(8):1379-1387, A, August 2004 (article)

ei

[BibTex]

ei Henning, GB., Hoddinott, KT., Wilson-Smith, ZJ., Hill, NJ. Masking effect produced by Mach bands on the detection of narrow bars of random polarity Journal of the Optical Society of America, 21(8):1379-1387, A, August 2004 (article)

[BibTex]

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Support Vector Channel Selection in BCI

Lal, T., Schröder, M., Hinterberger, T., Weston, J., Bogdan, M., Birbaumer, N., Schölkopf, B.

IEEE Transactions on Biomedical Engineering, 51(6):1003-1010, June 2004 (article)

Abstract
Designing a Brain Computer Interface (BCI) system one can choose from a variety of features that may be useful for classifying brain activity during a mental task. For the special case of classifying EEG signals we propose the usage of the state of the art feature selection algorithms Recursive Feature Elimination and Zero-Norm Optimization which are based on the training of Support Vector Machines (SVM). These algorithms can provide more accurate solutions than standard filter methods for feature selection. We adapt the methods for the purpose of selecting EEG channels. For a motor imagery paradigm we show that the number of used channels can be reduced significantly without increasing the classification error. The resulting best channels agree well with the expected underlying cortical activity patterns during the mental tasks. Furthermore we show how time dependent task specific information can be visualized.

ei

DOI [BibTex]

ei Lal, T., Schröder, M., Hinterberger, T., Weston, J., Bogdan, M., Birbaumer, N., Schölkopf, B. Support Vector Channel Selection in BCI IEEE Transactions on Biomedical Engineering, 51(6):1003-1010, June 2004 (article)

DOI [BibTex]

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Distance-Based Classification with Lipschitz Functions

von Luxburg, U., Bousquet, O.

Journal of Machine Learning Research, 5, pages: 669-695, June 2004 (article)

Abstract
The goal of this article is to develop a framework for large margin classification in metric spaces. We want to find a generalization of linear decision functions for metric spaces and define a corresponding notion of margin such that the decision function separates the training points with a large margin. It will turn out that using Lipschitz functions as decision functions, the inverse of the Lipschitz constant can be interpreted as the size of a margin. In order to construct a clean mathematical setup we isometrically embed the given metric space into a Banach space and the space of Lipschitz functions into its dual space. To analyze the resulting algorithm, we prove several representer theorems. They state that there always exist solutions of the Lipschitz classifier which can be expressed in terms of distance functions to training points. We provide generalization bounds for Lipschitz classifiers in terms of the Rademacher complexities of some Lipschitz function classes. The generality of our approach can be seen from the fact that several well-known algorithms are special cases of the Lipschitz classifier, among them the support vector machine, the linear programming machine, and the 1-nearest neighbor classifier.

ei

PDF PostScript PDF [BibTex]

ei von Luxburg, U., Bousquet, O. Distance-Based Classification with Lipschitz Functions Journal of Machine Learning Research, 5, pages: 669-695, June 2004 (article)

PDF PostScript PDF [BibTex]

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cDNA-Microarray Technology in Cartilage Research - Functional Genomics of Osteoarthritis [in German]

Aigner, T., Finger, F., Zien, A., Bartnik, E.

Zeitschrift f{\"u}r Orthop{\"a}die und ihre Grenzgebiete, 142(2):241-247, April 2004 (article)

Abstract
Functional genomics represents a new challenging approach in order to analyze complex diseases such as osteoarthritis on a molecular level. The characterization of the molecular changes of the cartilage cells, the chondrocytes, enables a better understanding of the pathomechanisms of the disease. In particular, the identification and characterization of new target molecules for therapeutic intervention is of interest. Also, potential molecular markers for diagnosis and monitoring of osteoarthritis contribute to a more appropriate patient management. The DNA-microarray technology complements (but does not replace) biochemical and biological research in new disease-relevant genes. Large-scale functional genomics will identify molecular networks such as yet identified players in the anabolic-catabolic balance of articular cartilage as well as disease-relevant intracellular signaling cascades so far rather unknown in articular chondrocytes. However, at the moment it is also important to recognize the limitations of the microarray technology in order to avoid over-interpretation of the results. This might lead to misleading results and prevent to a significant extent a proper use of the potential of this technology in the field of osteoarthritis.

ei

[BibTex]

ei Aigner, T., Finger, F., Zien, A., Bartnik, E. cDNA-Microarray Technology in Cartilage Research - Functional Genomics of Osteoarthritis [in German] Zeitschrift f{\"u}r Orthop{\"a}die und ihre Grenzgebiete, 142(2):241-247, April 2004 (article)

[BibTex]

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A Compression Approach to Support Vector Model Selection

von Luxburg, U., Bousquet, O., Schölkopf, B.

Journal of Machine Learning Research, 5, pages: 293-323, April 2004 (article)

Abstract
In this paper we investigate connections between statistical learning theory and data compression on the basis of support vector machine (SVM) model selection. Inspired by several generalization bounds we construct "compression coefficients" for SVMs which measure the amount by which the training labels can be compressed by a code built from the separating hyperplane. The main idea is to relate the coding precision to geometrical concepts such as the width of the margin or the shape of the data in the feature space. The so derived compression coefficients combine well known quantities such as the radius-margin term R^2/rho^2, the eigenvalues of the kernel matrix, and the number of support vectors. To test whether they are useful in practice we ran model selection experiments on benchmark data sets. As a result we found that compression coefficients can fairly accurately predict the parameters for which the test error is minimized.

ei

PDF [BibTex]

ei von Luxburg, U., Bousquet, O., Schölkopf, B. A Compression Approach to Support Vector Model Selection Journal of Machine Learning Research, 5, pages: 293-323, April 2004 (article)

PDF [BibTex]

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Experimentally optimal v in support vector regression for different noise models and parameter settings

Chalimourda, A., Schölkopf, B., Smola, A.

Neural Networks, 17(1):127-141, January 2004 (article)

Abstract
In Support Vector (SV) regression, a parameter ν controls the number of Support Vectors and the number of points that come to lie outside of the so-called var epsilon-insensitive tube. For various noise models and SV parameter settings, we experimentally determine the values of ν that lead to the lowest generalization error. We find good agreement with the values that had previously been predicted by a theoretical argument based on the asymptotic efficiency of a simplified model of SV regression. As a side effect of the experiments, valuable information about the generalization behavior of the remaining SVM parameters and their dependencies is gained. The experimental findings are valid even for complex ‘real-world’ data sets. Based on our results on the role of the ν-SVM parameters, we discuss various model selection methods.

ei

PDF DOI [BibTex]

ei Chalimourda, A., Schölkopf, B., Smola, A. Experimentally optimal v in support vector regression for different noise models and parameter settings Neural Networks, 17(1):127-141, January 2004 (article)

PDF DOI [BibTex]

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Protein ranking: from local to global structure in the protein similarity network

Weston, J., Elisseeff, A., Zhou, D., Leslie, C., Noble, W.

Proceedings of the National Academy of Science, 101(17):6559-6563, 2004 (article)

Abstract
Biologists regularly search databases of DNA or protein sequences for evolutionary or functional relationships to a given query sequence. We describe a ranking algorithm that exploits the entire network structure of similarity relationships among proteins in a sequence database by performing a diffusion operation on a pre-computed, weighted network. The resulting ranking algorithm, evaluated using a human-curated database of protein structures, is efficient and provides significantly better rankings than a local network search algorithm such as PSI-BLAST.

ei

Web [BibTex]

ei Weston, J., Elisseeff, A., Zhou, D., Leslie, C., Noble, W. Protein ranking: from local to global structure in the protein similarity network Proceedings of the National Academy of Science, 101(17):6559-6563, 2004 (article)

Web [BibTex]

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Statistical Performance of Support Vector Machines

Blanchard, G., Bousquet, O., Massart, P.

2004 (article)

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PostScript [BibTex]

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Asymptotic Properties of the Fisher Kernel

Tsuda, K., Akaho, S., Kawanabe, M., Müller, K.

Neural Computation, 16(1):115-137, 2004 (article)

ei

PDF [BibTex]

ei Tsuda, K., Akaho, S., Kawanabe, M., Müller, K. Asymptotic Properties of the Fisher Kernel Neural Computation, 16(1):115-137, 2004 (article)

PDF [BibTex]

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Some observations on the effects of slant and texture type on slant-from-texture

Rosas, P., Wichmann, F., Wagemans, J.

Vision Research, 44(13):1511-1535, 2004 (article)

Abstract
We measure the performance of five subjects in a slant-discrimination task for differently textured planes. As textures we used uniform lattices, randomly displaced lattices, circles (polka dots), Voronoi tessellations, plaids, 1/f noise, “coherent” noise and a leopard skin-like texture. Our results show: (1) Improving performance with larger slants for all textures. (2) Thus, following from (1), cases of “non-symmetrical” performance around a particular orientation. (3) For orientations sufficiently slanted, the different textures do not elicit major differences in performance, (4) while for orientations closer to the vertical plane there are marked differences between them. (5) These differences allow a rank-order of textures to be formed according to their “helpfulness”– that is, how easy the discrimination task is when a particular texture is mapped on the plane. Polka dots tend to allow the best slant discrimination performance, noise patterns the worst. Two additional experiments were conducted to test the generality of the obtained rank-order. First, the tilt of the planes was rotated to break the axis of gravity present in the original discrimination experiment. Second, the task was changed to a slant report task via probe adjustment. The results of both control experiments confirmed the texture-based rank-order previously obtained. We comment on the importance of these results for depth perception research in general, and in particular the implications our results have for studies of cue combination (sensor fusion) using texture as one of the cues involved.

ei

PDF [BibTex]

ei Rosas, P., Wichmann, F., Wagemans, J. Some observations on the effects of slant and texture type on slant-from-texture Vision Research, 44(13):1511-1535, 2004 (article)

PDF [BibTex]

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Minimizing the Cross Validation Error to Mix Kernel Matrices of Heterogeneous Biological Data

Tsuda, K., Uda, S., Kin, T., Asai, K.

Neural Processing Letters, 19, pages: 63-72, 2004 (article)

ei

PDF [BibTex]

ei Tsuda, K., Uda, S., Kin, T., Asai, K. Minimizing the Cross Validation Error to Mix Kernel Matrices of Heterogeneous Biological Data Neural Processing Letters, 19, pages: 63-72, 2004 (article)

PDF [BibTex]

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A Tutorial on Support Vector Regression

Smola, A., Schölkopf, B.

Statistics and Computing, 14(3):199-222, 2004 (article)

ei

Web [BibTex]

ei Smola, A., Schölkopf, B. A Tutorial on Support Vector Regression Statistics and Computing, 14(3):199-222, 2004 (article)

Web [BibTex]

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Bayesian analysis of the Scatterometer Wind Retrieval Inverse Problem: Some New Approaches

Cornford, D., Csato, L., Evans, D., Opper, M.

Journal of the Royal Statistical Society B, 66, pages: 1-17, 3, 2004 (article)

Abstract
The retrieval of wind vectors from satellite scatterometer observations is a non-linear inverse problem.A common approach to solving inverse problems is to adopt a Bayesian framework and to infer the posterior distribution of the parameters of interest given the observations by using a likelihood model relating the observations to the parameters, and a prior distribution over the parameters.We show how Gaussian process priors can be used efficiently with a variety of likelihood models, using local forward (observation) models and direct inverse models for the scatterometer.We present an enhanced Markov chain Monte Carlo method to sample from the resulting multimodal posterior distribution.We go on to show how the computational complexity of the inference can be controlled by using a sparse, sequential Bayes algorithm for estimation with Gaussian processes.This helps to overcome the most serious barrier to the use of probabilistic, Gaussian process methods in remote sensing inverse problems, which is the prohibitively large size of the data sets.We contrast the sampling results with the approximations that are found by using the sparse, sequential Bayes algorithm.

ei

PDF [BibTex]

ei Cornford, D., Csato, L., Evans, D., Opper, M. Bayesian analysis of the Scatterometer Wind Retrieval Inverse Problem: Some New Approaches Journal of the Royal Statistical Society B, 66, pages: 1-17, 3, 2004 (article)

PDF [BibTex]

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Feature Selection for Support Vector Machines Using Genetic Algorithms

Fröhlich, H., Chapelle, O., Schölkopf, B.

International Journal on Artificial Intelligence Tools (Special Issue on Selected Papers from the 15th IEEE International Conference on Tools with Artificial Intelligence 2003), 13(4):791-800, 2004 (article)

ei

Web [BibTex]

ei Fröhlich, H., Chapelle, O., Schölkopf, B. Feature Selection for Support Vector Machines Using Genetic Algorithms International Journal on Artificial Intelligence Tools (Special Issue on Selected Papers from the 15th IEEE International Conference on Tools with Artificial Intelligence 2003), 13(4):791-800, 2004 (article)

Web [BibTex]

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Phenotypic Characterization of Human Chondrocyte Cell Line C-20/A4: A Comparison between Monolayer and Alginate Suspension Culture

Finger, F., Schorle, C., Söder, S., Zien, A., Goldring, M., Aigner, T.

Cells Tissues Organs, 178(2):65-77, 2004 (article)

Abstract
DNA microarray analysis was used to investigate the molecular phenotype of one of the first human chondrocyte cell lines, C-20/A4, derived from juvenile costal chondrocytes by immortalization with origin-defective simian virus 40 large T antigen. Clontech Human Cancer Arrays 1.2 and quantitative PCR were used to examine gene expression profiles of C-20/A4 cells cultured in the presence of serum in monolayer and alginate beads. In monolayer cultures, genes involved in cell proliferation were strongly upregulated compared to those expressed by human adult articular chondrocytes in primary culture. Of the cell cycle-regulated genes, only two, the CDK regulatory subunit and histone H4, were downregulated after culture in alginate beads, consistent with the ability of these cells to proliferate in suspension culture. In contrast, the expression of several genes that are involved in pericellular matrix formation, including MMP-14, COL6A1, fibronectin, biglycan and decorin, was upregulated when the C-20/A4 cells were transferred to suspension culture in alginate. Also, nexin-1, vimentin, and IGFBP-3, which are known to be expressed by primary chondrocytes, were differentially expressed in our study. Consistent with the proliferative phenotype of this cell line, few genes involved in matrix synthesis and turnover were highly expressed in the presence of serum. These results indicate that immortalized chondrocyte cell lines, rather than substituting for primary chondrocytes, may serve as models for extending findings on chondrocyte function not achievable by the use of primary chondrocytes.

ei

[BibTex]

ei Finger, F., Schorle, C., Söder, S., Zien, A., Goldring, M., Aigner, T. Phenotypic Characterization of Human Chondrocyte Cell Line C-20/A4: A Comparison between Monolayer and Alginate Suspension Culture Cells Tissues Organs, 178(2):65-77, 2004 (article)

[BibTex]

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Kernel Methods and their Potential Use in Signal Processing

Perez-Cruz, F., Bousquet, O.

IEEE Signal Processing Magazine, (Special issue on Signal Processing for Mining), 2004 (article) Accepted

ei

PostScript [BibTex]

ei Perez-Cruz, F., Bousquet, O. Kernel Methods and their Potential Use in Signal Processing IEEE Signal Processing Magazine, (Special issue on Signal Processing for Mining), 2004 (article) Accepted

PostScript [BibTex]

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Uncompensated spins in a micro-patterned CoFeB / MnIr exchange bias system

Eimüller, T., Kato, T., Mizuno, T., Tsunashima, S., Quitmann, C., Ramsvik, T., Iwata, S., Schütz, G.

{Applied Physics Letters}, 85(12):2310-2312, 2004 (article)

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[BibTex]

mms Eimüller, T., Kato, T., Mizuno, T., Tsunashima, S., Quitmann, C., Ramsvik, T., Iwata, S., Schütz, G. Uncompensated spins in a micro-patterned CoFeB / MnIr exchange bias system {Applied Physics Letters}, 85(12):2310-2312, 2004 (article)

[BibTex]

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Comparative study of magnetization reversal in isolated and strayfield coupled microcontacts

Meier, G., Eiselt, R., Bolte, M., Barthelmess, M., Eimüller, T., Fischer, P.

{Applied Physics Letters}, 85(7):1193-1195, 2004 (article)

mms

[BibTex]

mms Meier, G., Eiselt, R., Bolte, M., Barthelmess, M., Eimüller, T., Fischer, P. Comparative study of magnetization reversal in isolated and strayfield coupled microcontacts {Applied Physics Letters}, 85(7):1193-1195, 2004 (article)

[BibTex]

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Grain boundary faceting close to the \Sigma3 coincidence misorientation in copper

Straumal, B., Polyakov, S., Bischoff, E., Mittemeijer, E.

{Zeitschrift f\"ur Metallkunde}, 95, pages: 939-944, 2004 (article)

mms

[BibTex]

mms Straumal, B., Polyakov, S., Bischoff, E., Mittemeijer, E. Grain boundary faceting close to the \Sigma3 coincidence misorientation in copper {Zeitschrift f\"ur Metallkunde}, 95, pages: 939-944, 2004 (article)

[BibTex]

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Photoelectron spectroscopy on Pt atoms and clusters deposited on C(0001)

Fauth, K., Schneider, N., He\ssler, M., Schütz, G.

{European Physical Journal D}, 29(1):57-61, 2004 (article)

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[BibTex]

mms Fauth, K., Schneider, N., He\ssler, M., Schütz, G. Photoelectron spectroscopy on Pt atoms and clusters deposited on C(0001) {European Physical Journal D}, 29(1):57-61, 2004 (article)

[BibTex]

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Enhanced flux line pinning by substrate induced defects in YBCO thin films

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

{Physica C}, 404, pages: 18-21, 2004 (article)

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[BibTex]

mms Albrecht, J., Leonhardt, S., Habermeier, H.-U., Brück, S., Spolenak, R., Kronmüller, H. Enhanced flux line pinning by substrate induced defects in YBCO thin films {Physica C}, 404, pages: 18-21, 2004 (article)

[BibTex]

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Amorphous carbon nanotubes produced by a temperature controlled DC arc discharge

Liu, Y., Song, X., Zhao, T., Zhu, J., Hirscher, M., Phillipp, F.

{Carbon}, 42(8-9):1852-1855, 2004 (article)

mms

[BibTex]

mms Liu, Y., Song, X., Zhao, T., Zhu, J., Hirscher, M., Phillipp, F. Amorphous carbon nanotubes produced by a temperature controlled DC arc discharge {Carbon}, 42(8-9):1852-1855, 2004 (article)

[BibTex]

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Initial oxidation of quasicrystals - an investigation by high-resolution RBS and ERDA

Plachke, D., Khellaf, A., Kurth, M., Szökefalvy-Nagy, A., Carstanjen, H. D.

{Journal of Non-Crystalline Solids}, 334-335, pages: 524-531, 2004 (article)

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[BibTex]

mms Plachke, D., Khellaf, A., Kurth, M., Szökefalvy-Nagy, A., Carstanjen, H. D. Initial oxidation of quasicrystals - an investigation by high-resolution RBS and ERDA {Journal of Non-Crystalline Solids}, 334-335, pages: 524-531, 2004 (article)

[BibTex]

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First-principles modeling of magnetism and phase equilibria in binary alloys

Diaz-Ortiz, A., Drautz, R., Fähnle, M., Dosch, H.

{Journal of Alloys and Compounds}, 369, pages: 27-32, 2004 (article)

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[BibTex]

mms Diaz-Ortiz, A., Drautz, R., Fähnle, M., Dosch, H. First-principles modeling of magnetism and phase equilibria in binary alloys {Journal of Alloys and Compounds}, 369, pages: 27-32, 2004 (article)

[BibTex]

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Critical thicknesses of domain formations in cubic particles and thin films

Kronmüller, H., Goll, D., Hertel, R., Schütz, G.

{Physica B}, 343(1-4):229-235, 2004 (article)

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[BibTex]

mms Kronmüller, H., Goll, D., Hertel, R., Schütz, G. Critical thicknesses of domain formations in cubic particles and thin films {Physica B}, 343(1-4):229-235, 2004 (article)

[BibTex]

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Critical sizes for ferromagnetic spherical hollow nanoparticles

Goll, D., Berkowitz, A. E., Bertram, H. N.

{Physical Review B}, 70(18), 2004 (article)

mms

[BibTex]

mms Goll, D., Berkowitz, A. E., Bertram, H. N. Critical sizes for ferromagnetic spherical hollow nanoparticles {Physical Review B}, 70(18), 2004 (article)

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Grain boundary wetting by a solid phase; microstructural development in a Zn-5 wt\textpercent Al alloy

Lopez, G. A., Mittemeijer, E. J., Straumal, B. B.

{Acta Materialia}, 52(15):4537-4545, 2004 (article)

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[BibTex]

mms Lopez, G. A., Mittemeijer, E. J., Straumal, B. B. Grain boundary wetting by a solid phase; microstructural development in a Zn-5 wt\textpercent Al alloy {Acta Materialia}, 52(15):4537-4545, 2004 (article)

[BibTex]

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Electronic correlations, magnetism, and structure of Fe-Al subsystems: An LDA+U study

Lechermann, F., Fähnle, M., Meyer, B., Elsässer, C.

{Physical Review B}, 69, 2004 (article)

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[BibTex]

mms Lechermann, F., Fähnle, M., Meyer, B., Elsässer, C. Electronic correlations, magnetism, and structure of Fe-Al subsystems: An LDA+U study {Physical Review B}, 69, 2004 (article)

[BibTex]

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Interaction of hydrogen isotopes with carbon nanostructures

Haluska, M., Hirscher, M., Becher, M., Dettlaff-Weglikowska, U., Chen, X., Roth, S.

{Materials Science and Engineering B}, 108, pages: 130-133, 2004 (article)

mms

[BibTex]

mms Haluska, M., Hirscher, M., Becher, M., Dettlaff-Weglikowska, U., Chen, X., Roth, S. Interaction of hydrogen isotopes with carbon nanostructures {Materials Science and Engineering B}, 108, pages: 130-133, 2004 (article)

[BibTex]

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Formation of nanograined structure and decomposition of supersaturated solid solution during high pressure torsion of Al-Zn and Al-Mg alloys

Straumal, B. B., Baretzky, B., Mazilkin, A. A., Phillipp, F., Kogtenkova, O. A., Volkov, M. N., Valiev, R. Z.

{Acta Materialia}, 52, pages: 4469-4478, 2004 (article)

mms

[BibTex]

mms Straumal, B. B., Baretzky, B., Mazilkin, A. A., Phillipp, F., Kogtenkova, O. A., Volkov, M. N., Valiev, R. Z. Formation of nanograined structure and decomposition of supersaturated solid solution during high pressure torsion of Al-Zn and Al-Mg alloys {Acta Materialia}, 52, pages: 4469-4478, 2004 (article)

[BibTex]

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Ab-initio modeling of nonlinear magnetoelastic coupling in epitaxial films

Komelj, M., Fähnle, M.

{Journal of Magnetism and Magnetic Materials}, 272-276, pages: e1587-e1588, 2004 (article)

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[BibTex]

mms Komelj, M., Fähnle, M. Ab-initio modeling of nonlinear magnetoelastic coupling in epitaxial films {Journal of Magnetism and Magnetic Materials}, 272-276, pages: e1587-e1588, 2004 (article)

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Effective exchange interaction in a quasi-two-dimensional self-assembled nanoparticle array

Wiedwald, U., Cerchez, M., Farle, M., Fauth, K., Schütz, G., Zürn, K., Boyen, H., Ziemann, P.

{Physical Review B}, 70, 2004 (article)

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DOI [BibTex]

mms Wiedwald, U., Cerchez, M., Farle, M., Fauth, K., Schütz, G., Zürn, K., Boyen, H., Ziemann, P. Effective exchange interaction in a quasi-two-dimensional self-assembled nanoparticle array {Physical Review B}, 70, 2004 (article)

DOI [BibTex]

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How well does total electron yield measure x-ray absorption in nanoparticles?

Fauth, K.

{Applied Physics Letters}, 85(15):3271-3273, 2004 (article)

mms

DOI [BibTex]

mms Fauth, K. How well does total electron yield measure x-ray absorption in nanoparticles? {Applied Physics Letters}, 85(15):3271-3273, 2004 (article)

DOI [BibTex]

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Ordering and magnetism in Fe-Co: Dense sequence of ground-state structures

Drautz, R., Diaz-Ortiz, A., Fähnle, M., Dosch, H.

{Physical Review Letters}, 93(6), 2004 (article)

mms

[BibTex]

mms Drautz, R., Diaz-Ortiz, A., Fähnle, M., Dosch, H. Ordering and magnetism in Fe-Co: Dense sequence of ground-state structures {Physical Review Letters}, 93(6), 2004 (article)

[BibTex]

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Thermal reversal of elongated ferromagnetic particles misoriented to the applied field

Goll, D., Bertram, H. N.

{IEEE Transactions on Magnetics}, 40(4):2416-2418, 2004 (article)

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[BibTex]

mms Goll, D., Bertram, H. N. Thermal reversal of elongated ferromagnetic particles misoriented to the applied field {IEEE Transactions on Magnetics}, 40(4):2416-2418, 2004 (article)

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Anisotropy of the orbital moments and the magnetic dipole term Tz in CrO2: An ab-initio study

Komelj, M., Ederer, C., Fähnle, M.

{Physical Review B}, 69, 2004 (article)

mms

[BibTex]

mms Komelj, M., Ederer, C., Fähnle, M. Anisotropy of the orbital moments and the magnetic dipole term Tz in CrO2: An ab-initio study {Physical Review B}, 69, 2004 (article)

[BibTex]

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Core-shell iron-iron oxide nanoparticles: magnetic properties and interactions

Theil-Kuhn, L., Bojesen, A., Timmermann, L., Fauth, K., Goering, E. J., Johnson, E., Meedom Nielsen, M., Morup, S.

{Journal of Magnetism and Magnetic Materials}, 272-276, pages: 1485-1486, 2004 (article)

mms

[BibTex]

mms Theil-Kuhn, L., Bojesen, A., Timmermann, L., Fauth, K., Goering, E. J., Johnson, E., Meedom Nielsen, M., Morup, S. Core-shell iron-iron oxide nanoparticles: magnetic properties and interactions {Journal of Magnetism and Magnetic Materials}, 272-276, pages: 1485-1486, 2004 (article)

[BibTex]

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Measurement of very low bulk concentrations (below 1 atppm) of hydrogen using ERDA

Tripathi, A., Kruse, O., Carstanjen, H. D.

{Nuclear Instruments and Methods B}, 219-220, pages: 435-439, 2004 (article)

mms

[BibTex]

mms Tripathi, A., Kruse, O., Carstanjen, H. D. Measurement of very low bulk concentrations (below 1 atppm) of hydrogen using ERDA {Nuclear Instruments and Methods B}, 219-220, pages: 435-439, 2004 (article)

[BibTex]

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Unusual doublet structure in proton magnetic-resonance spectra of yttrium and lutetium trihydrides

Majer, G., Telfah, A., Grinberg, F., Barnes, R. G.

{Physical Review B}, 70(13), 2004 (article)

mms

[BibTex]

mms Majer, G., Telfah, A., Grinberg, F., Barnes, R. G. Unusual doublet structure in proton magnetic-resonance spectra of yttrium and lutetium trihydrides {Physical Review B}, 70(13), 2004 (article)

[BibTex]

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Kinetics of primary nanocrystallization in Al-rich metallic glass with quenched-in nuclei

Wang, J. Q., Zhang, H. W., Gu, X. J., Lu, K., Sommer, F., Mittemeijer, E.

{Materials Science and Engineering A}, 375-377, pages: 980-984, 2004 (article)

mms

[BibTex]

mms Wang, J. Q., Zhang, H. W., Gu, X. J., Lu, K., Sommer, F., Mittemeijer, E. Kinetics of primary nanocrystallization in Al-rich metallic glass with quenched-in nuclei {Materials Science and Engineering A}, 375-377, pages: 980-984, 2004 (article)

[BibTex]

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3-dimensional Wulff diagrams for \Sigma3 grain boundaries in Cu

Straumal, B., Kucherinenko, Y., Baretzky, B.

{Reviews on Advanced Materials Science}, 7(1):23-31, 2004 (article)

mms

[BibTex]

mms Straumal, B., Kucherinenko, Y., Baretzky, B. 3-dimensional Wulff diagrams for \Sigma3 grain boundaries in Cu {Reviews on Advanced Materials Science}, 7(1):23-31, 2004 (article)

[BibTex]

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First-principles study of the interplay between magnetism and phase equilibria in Fe-Co systems

Diaz-Ortiz, A., Drautz, R., Fähnle, M., Dosch, H.

{Journal of Magnetism and Magnetic Materials}, 272-276, pages: 780-782, 2004 (article)

mms

[BibTex]

mms Diaz-Ortiz, A., Drautz, R., Fähnle, M., Dosch, H. First-principles study of the interplay between magnetism and phase equilibria in Fe-Co systems {Journal of Magnetism and Magnetic Materials}, 272-276, pages: 780-782, 2004 (article)

[BibTex]

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Magnetic field optimization of permanent magnet unulators for arbitrary polarization

Bahrdt, J., Frentrup, W., Gaupp, A., Scheer, M., Englisch, U.

{Nuclear Instruments and Methods in Physics Research A}, 516, pages: 575-585, 2004 (article)

mms

[BibTex]

mms Bahrdt, J., Frentrup, W., Gaupp, A., Scheer, M., Englisch, U. Magnetic field optimization of permanent magnet unulators for arbitrary polarization {Nuclear Instruments and Methods in Physics Research A}, 516, pages: 575-585, 2004 (article)

[BibTex]