@phdthesis{Dines2006,
  author    = {Dines, Nicoleta},
  title     = {Elliptic operators on corner manifolds},
  pages     = {174 S. : graph. Darst.},
  year      = {2006},
  language  = {en}
}
@article{Koechy2006,
  author    = {K{\"o}chy, Martin},
  title     = {Stochastic time series of daily precipitation for the interior of Israel},
  year      = {2006},
  abstract  = {This contribution describes a generator of stochastic time series of daily precipitation for the interior of Israel from c. 90 to 900 mm mean annual precipitation (MAP) as a tool for studies of daily rain variability. The probability of rainfall on a given day of the year is described by a regular Gaussian peak curve function. The amount of rain is drawn randomly from an exponential distribution whose mean is the daily mean rain amount (averaged across years for each day of the year) described by a flattened Gaussian peak curve. Parameters for the curves have been calculated from monthly aggregated, long-term rain records from seven meteorological stations. Parameters for arbitrary points on the MAP gradient are calculated from a regression equation with MAP as the only independent variable. The simple structure of the generator allows it to produce time series with daily rain patterns that are projected under climate change scenarios and simultaneously control MAP. Increasing within-year variability of daily precipitation amounts also increases among-year variability of MAP as predicted by global circulation models. Thus, the time series incorporate important characteristics for climate change research and represent a flexible tool for simulations of daily vegetation or surface hydrology dynamics.},
  language  = {en}
}
@phdthesis{ValenciaMolina2006,
  author    = {Valencia Molina, Sergio},
  title     = {Element-selective study of charge localization processes in manganite thin films},
  address   = {Potsdam},
  pages     = {155 S. : graph. Darst.},
  year      = {2006},
  language  = {en}
}
@article{RaynaudJondNecandMarcilhacetal.2006,
  author    = {Raynaud, Fabrice and Jond-Necand, Carole and Marcilhac, Anne and F{\"u}rst, Dieter and Benyamin, Yves},
  title     = {Calpain 1-gamma filamin interaction in muscle cells : a possible in situ regulation by PKC-alpha},
  issn      = {1357-2725},
  doi       = {10.1016/j.biocel.2005.09.020},
  year      = {2006},
  abstract  = {Calpains are a family of calcium-dependant cysteine-proteases involved in cytoskeleton remodelling and muscle differentiation. In a recent study, we observed the presence of calpain I in the muscle contractile apparatus and specifically in the N1- and N2-fines. This calpain isoform was found to be involved in the degradation of muscle fibres via proteolysis of key proteins in Z-disk and costameric junctions. The goal of this study was to determine whether gamma-filamin - a specific muscle isoform of the filamin family - is a calpain, I substrate and to characterise this interaction. gamma-Filamin is a major muscle architectural protein located in the Z-fine and under the sarcolemmal membrane. This protein is a component of the chain binding the sarcolemma to the sarcomeric structure. In this study, we found that gamma-filamin formed a stable complex in vitro and in cells with calpain I in the absence of calcium stimulation. We also located the binding domains in the C-terminus of gamma-filamin with a cleavage site between serine 2626 and serine 2627 in the hinge 2 region. The catalytic (80 kDa) and regulatory (28 kDa) subunits of calpain I are both involved in high affinity binding at gamma-filamin. Moreover, we showed that phosphorylation of the filamin C- terminus domain by PKC alpha protected gamma-filamin against proteolysis by calpain I in COS cells. Stimulation of PKC activity in myotubes, prevented gamma-filamin proteolysis by calpain and resulted in an increase in myotube adhesion.},
  language  = {en}
}
@article{GrossD'LimaBlasius2006,
  author    = {Gross, Thilo and D'Lima, Carlos J. Dommar and Blasius, Bernd},
  title     = {Epidemic dynamics on an adaptive network},
  issn      = {0031-9007},
  doi       = {10.1103/Physrevlett.96.208701},
  year      = {2006},
  abstract  = {Many real-world networks are characterized by adaptive changes in their topology depending on the state of their nodes. Here we study epidemic dynamics on an adaptive network, where the susceptibles are able to avoid contact with the infected by rewiring their network connections. This gives rise to assortative degree correlation, oscillations, hysteresis, and first order transitions. We propose a low-dimensional model to describe the system and present a full local bifurcation analysis. Our results indicate that the interplay between dynamics and topology can have important consequences for the spreading of infectious diseases and related applications},
  language  = {en}
}
@article{MileoSchaub2006,
  author    = {Mileo, Alessandra and Schaub, Torsten},
  title     = {Extending ordered disjunctions for policy enforcement : preliminary report},
  year      = {2006},
  language  = {en}
}
@article{DelgrandeSchaubTompits2006,
  author    = {Delgrande, James Patrick and Schaub, Torsten and Tompits, Hans},
  title     = {An Extended Query language for action languages (and its application to aggregates and preferences)},
  year      = {2006},
  language  = {en}
}
@article{DelgrandeLiuSchaubetal.2006,
  author    = {Delgrande, James Patrick and Liu, Daphne H. and Schaub, Torsten and Thiele, Sven},
  title     = {COBA 2.0 : a consistency-based belief change system},
  year      = {2006},
  language  = {en}
}
@article{KawanabeBlanchardSugiyamaetal.2006,
  author    = {Kawanabe, Motoaki and Blanchard, Gilles and Sugiyama, Masashi and Spokoiny, Vladimir G. and M{\"u}ller, Klaus-Robert},
  title     = {A novel dimension reduction procedure for searching non-Gaussian subspaces},
  issn      = {0302-9743},
  doi       = {10.1007/11679363_19},
  year      = {2006},
  abstract  = {In this article, we consider high-dimensional data which contains a low-dimensional non-Gaussian structure contaminated with Gaussian noise and propose a new linear method to identify the non-Gaussian subspace. Our method NGCA (Non-Gaussian Component Analysis) is based on a very general semi-parametric framework and has a theoretical guarantee that the estimation error of finding the non-Gaussian components tends to zero at a parametric rate. NGCA can be used not only as preprocessing for ICA, but also for extracting and visualizing more general structures like clusters. A numerical study demonstrates the usefulness of our method},
  language  = {en}
}
@article{GlattBuschKaiseretal.2006,
  author    = {Glatt, Erik and Busch, Hauke and Kaiser, Friedemann and Zaikin, Alexei A.},
  title     = {Noise-memory induced excitability and pattern formation in oscillatory neural models},
  issn      = {1539-3755},
  doi       = {10.1103/Physreve.73.026216},
  year      = {2006},
  abstract  = {We report a noise-memory induced phase transition in an array of oscillatory neural systems, which leads to the suppression of synchronous oscillations and restoration of excitable dynamics. This phenomenon is caused by the systematic contributions of temporally correlated parametric noise, i.e., possessing a memory, which stabilizes a deterministically unstable fixed point. Changing the noise correlation time, a reentrant phase transition to noise- induced excitability is observed in a globally coupled array. Since noise-induced excitability implies the restoration of the ability to transmit information, associated spatiotemporal patterns are observed afterwards. Furthermore, an analytic approach to predict the systematic effects of exponentially correlated noise is presented and its results are compared with the simulations},
  language  = {en}
}
@article{MeinelWang2006,
  author    = {Meinel, Christoph and Wang, Long},
  title     = {Building content clusters based on modelling page pairs},
  doi       = {10.1007/11610113_85},
  year      = {2006},
  abstract  = {We give a new view on building content clusters from page pair models. We measure the heuristic importance within every two pages by computing the distance of their accessed positions in usage sessions. We also compare our page pair models with the classical pair models used in information theories and natural language processing, and give different evaluation methods to build the reasonable content communities. And we finally interpret the advantages and disadvantages of our models from detailed experiment results},
  language  = {en}
}
@phdthesis{Mueller2006,
  author    = {M{\"u}ller, Christoph},
  title     = {Climate change and global land-use patterns : quantifying the human impact on the terrestrial biosphere},
  address   = {Potsdam},
  pages     = {XII, 104, XXII S. : graph. Darst.},
  year      = {2006},
  language  = {en}
}
@article{Karolewski2006,
  author    = {Karolewski, Ireneusz Pawel},
  title     = {Civil society and its discontents},
  isbn      = {978-3-949469-40-7},
  year      = {2006},
  language  = {en}
}
@article{DonnerSeehaferSanjuanetal.2006,
  author    = {Donner, Reik Volker and Seehafer, Norbert and Sanjuan, Miguel Angel Fernandez and Feudel, Fred},
  title     = {Low-dimensional dynamo modelling and symmetry-breaking bifurcations},
  series = {Physica. D, Nonlinear phenomena},
  volume    = {223},
  journal   = {Physica. D, Nonlinear phenomena},
  number    = {2},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0167-2789},
  doi       = {10.1016/j.physd.2006.08.022},
  pages     = {151 -- 162},
  year      = {2006},
  abstract  = {Motivated by the successful Karlsruhe dynamo experiment, a relatively low-dimensional dynamo model is proposed. It is based on a strong truncation of the magnetohydrodynamic (MHD) equations with an external forcing of the Roberts type and the requirement that the model system satisfies the symmetries of the full MHD system, so that the first symmetry-breaking bifurcations can be captured. The backbone of the Roberts dynamo is formed by the Roberts flow, a helical mean magnetic field and another part of the magnetic field coupled to these two by triadic mode interactions. A minimum truncation model (MTM) containing only these energetically dominating primary mode triads is fully equivalent to the widely used first-order smoothing approximation. However, it is shown that this approach works only in the limit of small wave numbers of the excited magnetic field or small magnetic Reynolds numbers (\$Rm ll 1\$). To obtain dynamo action under more general conditions, secondary mode},
  language  = {en}
}
@article{FeldmeierNikutta2006,
  author    = {Feldmeier, Achim and Nikutta, Robert},
  title     = {Nonlocal radiative coupling in non monotonic stellar winds (Research note)},
  issn      = {0004-6361},
  doi       = {10.1051/0004-6361:20053380},
  year      = {2006},
  abstract  = {There is strong observational evidence of shocks and clumping in radiation-driven stellar winds from hot, luminous stars. The resulting non nous monotonic velocity law allows for radiative coupling between distant locations, which is so far not accounted for in hydrodynamic wind simulations. In the present paper, we determine the Sobolev source function and radiative line force in the presence of radiative coupling in spherically symmetric flows, extending the geometry-free formalism of Rybicki \& Hummer (1978, ApJ, 219, 654) to the case of three-point coupling, which can result from, e. g., corotating interaction regions, wind shocks, or mass overloading. For a simple model of an overloaded wind, we find that, surprisingly, the flow decelerates at all radii above a certain height when nonlocal radiative coupling is accounted for. We discuss whether radiation-driven winds might in general not be able to re- accelerate after a non monotonicity has occurred in the velocity law},
  language  = {en}
}
@article{GerloffEliasBaruaMoelichetal.2006,
  author    = {Gerloff-Elias, Antje and Barua, Deepak and M{\"o}lich, Andreas and Spijkerman, Elly},
  title     = {Temperature- and pH-dependent accumulation of heat-shock proteins in the acidophilic green alga Chlamydomonas acidophila},
  issn      = {0168-6496},
  doi       = {10.1111/j.1574-6941.2006.00078.x},
  year      = {2006},
  abstract  = {Chlamydomonas acidophila, a unicellular green alga, is a dominant phytoplankton species in acidic water bodies, facing severe environmental conditions such as low pH and high heavy metal concentrations. We examined the pH-, and temperature-dependent accumulation of heat-shock proteins in this alga to determine whether heat-shock proteins play a role in adaptation to their environment. Our results show increased heat-shock proteins accumulation at suboptimal pHs, which were not connected with any change in intracellular pH. In comparison to the mesophilic Chlamydomonas reinhardtii, the acidophilic species exhibited significantly higher accumulations of heat-shock proteins under control conditions, indicating an environmental adaptation of increased basal levels of heat-shock proteins. The results suggest that heat- shock proteins might play a role in the adaptation of C. acidophila, and possibly other acidophilic algae, to their extreme environment},
  language  = {en}
}
@article{GorfmanTsirelsonPucheretal.2006,
  author    = {Gorfman, Semen and Tsirelson, Vladimir and Pucher, Andreas and Morgenroth, Wolfgang and Pietsch, Ullrich},
  title     = {X-ray diffraction by a crystal in a permanent external electric field : electric-field-induced structural response in alpha-GaPO4},
  issn      = {0108-7673},
  doi       = {10.1107/S0108767305036111},
  year      = {2006},
  abstract  = {For the first time, site-selective distortion has been investigated for two different structural units in the ternary compound alpha-GaPO4 under the influence of a permanent external electric field. Based on 54 measured reflection intensities, the electric-field-induced distortion of PO4 and GaO4 tetrahedra in alpha-GaPO4 crystals is evaluated using a model of pseudoatomic displacements introduced recently [Gorfman, Tsirelson \& Pietsch (2005). Acta Cryst. A61, 387- 396]. A stronger variation of the P-O bond lengths in the PO4 tetrahedron was found compared to the bonds in the GaO4 tetrahedron. The different distortions of the tetrahedra owing to the electric field were analysed in terms of the valence charge density of alpha-GaPO4 and its topological characteristics. The larger charge of the P pseudoatom compared to the Ga atom was recognized as the main reason for the higher sensitivity of the PO4 tetrahedron to a permanent external electric field},
  language  = {en}
}
@article{LeimuKoricheva2006,
  author    = {Leimu, Roosa and Koricheva, Julia},
  title     = {A meta-analysis of genetic correlations between plant resistances to multiple enemies},
  issn      = {0003-0147},
  doi       = {10.1086/505766},
  year      = {2006},
  abstract  = {Genetic correlations between plant resistances to multiple natural enemies are important because they have the potential to determine the mode of selection that natural enemies impose on a host plant, the structure of herbivore and pathogen communities, and the success of plant breeding for resistance to multiple diseases and pests. We conducted a meta-analysis of 29 published studies of 16 different plant species reporting a total of 467 genetic correlations between resistances to multiple herbivores or pathogens. In general, genetic associations between resistances to multiple natural enemies tended to be positive regardless of the breeding design, type of attacker, and type of host plant. Positive genetic correlations between resistances were stronger when both attackers were pathogens or generalist herbivores and when resistance to different enemies was tested independently, suggesting that generalists may be affected by the same plant resistance traits and that interactions among natural enemies are common. Although the mean associations between resistances were positive, indicating the prevalence of diffuse selection and generalized defenses against multiple enemies, the large variation in both the strength and the direction of the associations suggests a continuum between pairwise and diffuse selection},
  language  = {en}
}
@article{DialloKuleshHolschneideretal.2006,
  author    = {Diallo, Mamadou Sanou and Kulesh, Michail and Holschneider, Matthias and Scherbaum, Frank and Adler, Frank},
  title     = {Characterization of polarization attributes of seismic waves using continuous wavelet transforms},
  issn      = {0016-8033},
  doi       = {10.1190/1.2194511},
  year      = {2006},
  abstract  = {Complex-trace analysis is the method of choice for analyzing polarized data. Because particle motion can be represented by instantaneous attributes that show distinct features for waves of different polarization characteristics, it can be used to separate and characterize these waves. Traditional methods of complex-trace analysis only give the instantaneous attributes as a function of time or frequency. However. for transient wave types or seismic events that overlap in time, an estimate of the polarization parameters requires analysis of the time-frequency dependence of these attributes. We propose a method to map instantaneous polarization attributes of seismic signals in the wavelet domain and explicitly relate these attributes with the wavelet-transform coefficients of the analyzed signal. We compare our method with traditional complex-trace analysis using numerical examples. An advantage of our method is its possibility of performing the complete wave-mode separation/ filtering process in the wavelet domain and its ability to provide the frequency dependence of ellipticity, which contains important information on the subsurface structure. Furthermore, using 2-C synthetic and real seismic shot gathers, we show how to use the method to separate different wave types and identify zones of interfering wave modes},
  language  = {en}
}
@article{SchmidtkeBellWeithoff2006,
  author    = {Schmidtke, Andrea and Bell, Elanor M. and Weithoff, Guntram},
  title     = {Potential grazing impact of the mixotrophic flagellate Ochromonas sp. (Chrysophyceae) on bacteria in an extremely acidic lake},
  volume    = {28},
  number    = {11},
  publisher = {Oxford University Press},
  address   = {Oxford},
  issn      = {0142-7873},
  doi       = {10.1093/plankt/fbl034},
  pages     = {991 -- 1001},
  year      = {2006},
  abstract  = {Flagellates are important bacterial grazers in most planktonic food webs. The prey-size preference of the mixotrophic flagellate, Ochromonas sp. (Chrysophyceae), isolated from an extremely acidic lake, Lake 111 (pH 2.6), was determined using fluorescently labelled microspheres (beads). According to grazing experiments with cultured bacteria, also isolated from Lake 111, the potential grazing impact on Lake 111"s single-celled bacterial production was calculated. Ochromonas sp. ingested the smallest beads offered (0.5 µm diameter) at the highest rate. Ingestion rate declined with increasing bead size. The highest prey volume-specific ingestion was measured for Ochromonas sp. feeding on intermediate-sized beads (1.9 µm). Ingestion rates were low due in part to the large fraction of inactive flagellates observed. According to the bacterial ingestion rate, a mean of 88\% (epilimnion) and 68\% (hypolimnion) of in situ single- celled bacterial production is potentially grazed daily by Ochromonas sp. In the epilimnion of Lake 111, the heterotrophic carbon gain is three times higher than the autotrophic production. Alongside carbon uptake, Ochromonas sp. also benefits from ingesting bacteria through the uptake of phosphorus. A biovolume minimum corresponding to the prey size at which Ochromonas sp. feeds most efficiently occurred in the Lake 111 epilimnetic bacterial community, implying top-down control of the bacterial community by Ochromonas sp.},
  language  = {en}
}