Multivariate and Psycho-Physiological Functions of DSIP (Delta-Sleep-Inducing Peptide), (9999)
Schoenenberger, Guido A., Ernst, A., Schneider-Helmert, D.
Delta-Sleep-Inducing-Peptide (DSIP) beside humoral sleep induction acts upon the circadian rhythmicity of the locomotor activity and transmitter concentrations in the brain as well as on that of...
Quantitative analysis of clumps in the tidal tails of star clusters (2008)
Just, A., Berczik, P., Petrov, M. I., Ernst, A.
Tidal tails of star clusters are not homogeneous but show well defined clumps in observations as well as in numerical simulations. Recently an epicyclic theory for the formation of these clumps was...
Hughes, I. D., Daene, M., Ernst, A., Hergert, W., Lueders, M., Staunton, J. B., ...
We describe an ab initio theory of finite temperature magnetism in strongly-correlated electron systems. The formalism is based on spin density functional theory, with a self-interaction corrected...
Lanthanide contraction and magnetism in the heavy rare earth elements (2007)
Hughes, ID, Däne, M, Ernst, A, Hergert, W, Lüders, M, Poulter, J, ...
Becker, S., Richl, P., Ernst, A.
The abundance and distribution of Synechococcus spp. in the autotrophic picoplankton of Lake Constance, were followed in the pelagic and littoral habitat by qPCR over 2 years. One genotype,...
Giant spin splitting through surface alloying. (2007)
Ast, C. R., Henk, J., Ernst, A., Moreschini, L., Falub, M. C., Pacile, D., ...
Lanthanide contraction and magnetism in the heavy rare earth elements. (2007)
Hughes, I. D., Däne, M., Ernst, A., Hergert, W., Lüders, M., Poulter, J., ...
N-body models of rotating globular clusters (2007)
Ernst, A., Glaschke, P., Fiestas, J., Just, A., Spurzem, R.
In this paper we examine the dynamical evolution of rotating globular clusters with direct N-body models. Our initial models are rotating King models, and we obtain results both for equal-mass...
Elter, M., Ernst, A., Küblbeck, C.
We present a low-cost, passive 3d scanning system using an off-the-shelf consumer digital camera for image acquisition. We have developed a state of the art structure from motion algorithm for camera...
Face detection and tracking in video sequences using the modified census transformation (2006)
A detailed description of our face detection method
Large spin effects in Coulomb blockade of Fe/MgO/Fe tunnel junctions (2005)
Wulfhekel, W., Ernst, A., Henk, J., Bruno, P., Kirschner, J., Zavaliche, F., ...
Self-interaction correction in multiple scattering theory (2005)
Lüders, M., Ernst, A., Däne, M., Szotek, Z., Svane, A., Ködderitzsch, D., ...
Weakly dispersive band near the Fermi level of GaMnAs due to Mn interstitials (2005)
Ernst, A., Sandratskii, L.M., Bouhassoune, M., Henk, J., Lüders, M.
Stereo image based collision prevention using the census transform and the snow classifier (2005)
Küblbeck, C., Ach, R., Ernst, A.
In this paper we show an approach for a stereo-camera based system on a moving roboter to avoid obstacles. We propose the "census transformation" for generating the feature for the...
Lindsay, R, Wander, A, Ernst, A, Montanari, B, Thornton, G, Harrison, NM
The relaxation of the prototypical metal oxide surface, rutile TiO2(110)1x1 has been elucidated using quantitative low energy electron diffraction. Successful structure determination entailed the...
Weakly dispersive band near the fermi level of GaMnAs due to Mn interstitials (2005)
Ernst, A, Sandratskii, LM, Bouhassoune, M, Henk, J, Lüders, M
Self-interaction correction in multiple scattering theory (2005)
Lüders, M, Ernst, A, Däne, M, Szotek, Z, Svane, A, Ködderitzsch, D, ...
Anisotropic gaseous models of tidally limited star clusters -- comparison with other methods (2004)
Spurzem, R., Giersz, M., Takahashi, K., Ernst, A.
We present new models of the evolution and dissolution of star clusters evolving under the combined influence of internal relaxation and external tidal fields, using the anisotropic gaseous model...
Self-interaction correction in multiple scattering theory (2004)
Lüders, M., Ernst, A., Däne, M., Szotek, Z., Svane, A., Ködderitzsch, D., ...
We propose a simplified version of self-interaction corrected local spin-density (SIC-LSD) approximation, based on multiple scattering theory, which implements self-interaction correction locally,...
Positron annihilation study of polyphenylene dendrimers (2003)
Marek,T., Süvegh,K., Vertes,A., Ernst,A., Bauer,R., Weil,T., ...
The free volume of a series of rigid polyphenylene dendrimers was studied by positron lifetime spectroscopy and the experimental data were compared with results from molecular dynamics calculations....
Spin polarization of the L-gap surface states on Au(111) (2003)
Henk, J., Ernst, A., Bruno, P.
The electron spin polarization (ESP) of the L-gap surface states on Au(111) is investigated theoretically by means of first-principles electronic-structure and photoemission calculations. The surface...
Positron annihilation study of polyphenylene dendrimers (2003)
Marek, T., Süvegh, K., Vertes, A., Ernst, A., Bauer, R., Weil, T., ...
The free volume of a series of rigid polyphenylene dendrimers was studied by positron lifetime spectroscopy and the experimental data were compared with results from molecular dynamics calculations....
Fast frontal-view face detection using a multi-path decision tree (2003)
This paper presents a novel approach to the real-time detection of frontal faces in static grey images. The faces may be rotated in-plane from -60degrees to 60degrees which suffices for most...
Novel imaging technique of the magnetic Brillouin Zone of thin films and magnetic surfaces (2002)
Berakdar, J., Ernst, A., Morozov, A., Samarin, S. N., Hillebrecht, F. U., Kirschner, J.
Exchange interactions in NiO and at the NiO(100) surface (2002)
Ködderitzsch, D., Hergert, W., Temmermann, W. M., Szotek, Z., Ernst, A., Winter, H.
Robust face detection at video frame rate based on edge orientation features (2002)
Fröba, B., Ernst, A., Küblbeck, C.
In this paper, we present a novel approach to real-time face detection in arbitrary grey images and video streams using a multi-stage detection pipeline. It is based on edge orientation matching...
Exchange interactions in NiO and at the NiO(100) surface (2002)
Ködderitzsch, D, Hergert, W, Temmerman, W M, Szotek, Z, Ernst, A, Winter, H
A second nitrogenase in vegetative cells of a heterocyst-forming cyanobacterium.
Thiel, T, Lyons, E M, Erker, J C, Ernst, A
In many filamentous cyanobacteria nitrogen fixation occurs in differentiated cells called heterocysts. Filamentous strains that do not form heterocysts may fix nitrogen in vegetative cells, primarily...
An insertion element prevents phycobilisome synthesis in N2-fixing Synechocystis sp. strain BO 8402.
The unicellular diazotrophic cyanobacterium Synechocystis sp. strain BO 8402, isolated from Lake Constance, contains a novel insertion sequence, IS8402, in the apcA gene encoding a pigmented protein...
GlbN (cyanoglobin) is a peripheral membrane protein that is restricted to certain Nostoc spp.
Hill, D R, Belbin, T J, Thorsteinsson, M V, Bassam, D, Brass, S, Ernst, A, ...
The glbN gene of Nostoc commune UTEX 584 is juxtaposed to nifU and nifH, and it encodes a 12-kDa monomeric hemoglobin that binds oxygen with high affinity. In N. commune UTEX 584, maximum...
Maldener, I, Fiedler, G, Ernst, A, Fernández-Piñas, F, Wolk, C P
Mutant M7, obtained by transposon mutagenesis of the cyanobacterium Anabaena sp. strain PCC 7120, is impaired in the development of mature heterocysts. Under aerobic conditions, the mutant is unable...
Reuter, W, Westermann, M, Brass, S, Ernst, A, Böger, P, Wehrmeyer, W
The phycobiliproteins of the unicellular cyanobacterium Synechocystis sp. strain BO 8402 and its derivative strain BO 9201 are compared. The biliproteins of strain BO 8402 are organized in...
Ernst, A, Black, T, Cai, Y, Panoff, J M, Tiwari, D N, Wolk, C P
Mutants of Anabaena sp. strain PCC 7120 that are incapable of sustained growth with air as the sole source of nitrogen were generated by using Tn5-derived transposons. Nitrogenase was expressed only...
Böhm, I, Halbherr, A, Smaglinski, S, Ernst, A, Böger, P
Nitrogenase of the heterocystous cyanobacterium Anabaena variabilis was inactivated in vivo (S. Reich, H. Almon, and P. Böger, FEMS Microbiol. Lett. 34:53-56, 1986). Partially purified and modified...
In the heterocystous cyanobacterium Anabaena variabilis, a change in nitrogenase activity and concomitant modification of dinitrogenase reductase (the Fe protein of nitrogenase) was induced either by...