Essentiality and Damage in Metabolic Networks Abstract (2007)
N. Lemke, C. K. Barcellos, F. Herédia
Understanding the architecture of the metabolism from annotated genome sequences of organisms is a major task for postgenomic biology. Recent studies of metabolic networks have focused on the...
Computational Investigation of the Robustness of the Protein Network of Helicobacter pylori (2003)
Schmith Jose Mombach, J. Schmith, N. Lemke, C. K. Barcellos
In an organism proteins perform many biological functions through a complex network of interactions. The characterization of the properties of these networks are important to the understanding of the...
EasyKEGG: A data filtering and standardization (2003)
System For The, R. A. Ferreira, J. Schmith, C. K. Barcellos, N. Lemke, ...
We are witnessing an exponential increase of organisms with sequenced genomes. A large amount of data is produced and genomics and functional databases are created to store these informations....
Micellization in the presence of polyelectrolyte (2001)
Lemke, N., Arenzon, Jeferson J., Levin, Yan
We present a simple model to study micellization of amphiphiles condensed on a rodlike polyion. Although the mean field theory leads to a first order micellization transition for sufficiently strong...
SCHWARM - Microsatellite formation flying in the Earths's magnetosphere. (2001)
Guelman, M., Bedrich, S., Lemke, N., Büchner, J., Nikutowski, B., Woch, J.
Stretched exponential relaxation and independent relaxation modes (2000)
We discuss the origin of stretched exponential relaxation in disordered Ising spin systems by writing the master equation on the phase space, and the evolution of local and global spin...
Stretched Exponential Relaxation on the Hypercube and the Glass Transition (2000)
We study random walks on the dilute hypercube using an exact enumeration Master equation technique, which is much more efficient than Monte Carlo methods for this problem. For each dilution $p$ the...
Finite temperature phase transition in the two-dimension Randomly Coupled Ferromagnet (1999)
We show using extensive simulation results and physical arguments that an Ising system on a two dimensional square lattice, having interactions of random sign between first neighbors and...
Usage of Two-Directional Link Techniques for Determination of Satellite State for GNSS-2 (1999)
Hammesfahr, J., Hornbostel, A., Hahn, J., Trautenberg, H., Rapp, C., Specht, W., ...
Die Ergebnisse einer Studie zur Verbesserung des Satelliten-Zustandsvektors einschließlich Position, Zeit und Integrität werden zusammengefasst. Simulationsergebnisse bezüglich der Verbesserung 1)...
Results from the GPS Experiment on Equator-S (1999)
Lemke, N., Eissfeller, B., Balbach, O., Enderle, W., Schmidhuber, M.
An encouraging concept for position determination of geostationary satellites is the use of the Global Positioning System (GPS). Although the geostationary orbit is well beyond the orbits of the GPS...
The Spin Glass Transition : Exponents and Dynamics (1998)
Bernardi, L. W., Lemke, N., Mari, P. O., Campbell, I. A., Alegria, A., Colmenero, J.
Numerical simulations on Ising Spin Glasses show that spin glass transitions do not obey the usual universality rules which hold at canonical second order transitions. On the other hand the dynamics...
GPS Performance for GEOs and HEOs - The Equator-S Spacecraft Mission (1998)
Enderle, W., Schmidhuber, M., Gill, E., Montenbruck, O., Braun, A., Eissfeller, B., ...
The successfully usage of spaceborne GPS receivers for orbit- and attitude determination has in the past mainly been applied for spacecraft in near-circular Low Earth Orbits (LEO), e.g....
Two dimensional Ising spin glasses with non-zero ordering temperatures (1996)
We demonstrate numerically that for Ising spins on square lattices with ferromagnetic second neighbour interactions and random near neighbour interactions, two dimensional Ising spin glass order with...
Chaotic Dynamics of High Order Neural Networks (1994)
Lemke, N., Arenzon, J. J., Tamarit, F. A.
The dynamics of an extremely diluted neural network with high order synapses acting as corrections to the Hopfield model is investigated. As in the fully connected case, the high order terms may...