Institut für Physik und Astronomie
Refine
Year of publication
Document Type
- Postprint (136) (remove)
Language
- English (136) (remove)
Keywords
- diffusion (16)
- anomalous diffusion (9)
- models (3)
- nonergodicity (3)
- transport (3)
- azobenzene (2)
- brushes (2)
- dynamics (2)
- films (2)
- first passage time (2)
- first-passage time (2)
- fractional Brownian motion (2)
- impact (2)
- model (2)
- oscillations (2)
- perovskite solar cells (2)
- photochemistry (2)
- photoluminescence (2)
- photovoltaics (2)
- random diffusivity (2)
- stars: abundances (2)
- superstatistics (2)
- surface (2)
- surface-relief gratings (2)
- 2D perovskites (1)
- 3 body recombination (1)
- 4-nitrobenzenethiol (1)
- AG (1)
- AU (1)
- Amazon rainforest (1)
- Anisotropy (1)
- Antibiotics (1)
- Atlantic meridional overturning circulation (1)
- Auger electron spectroscopy (1)
- Auger–Meitner (1)
- BESSY II. (1)
- BL Lacertae objects: individual (1)
- Bacterial biofilms (1)
- Biofilms (1)
- Biological defense mechanisms (1)
- Bose-Einstein condensates (BECs) (1)
- Bragg peak (1)
- Brownian motion (1)
- Brownian yet non-Gaussian diffusion (1)
- CM(-1) (1)
- Chebyshev inequality (1)
- Complementarity (1)
- Coster–Kronig (1)
- Cystic fibrosis (1)
- Debye screening (1)
- Dictyostelium cells (1)
- Dielectric Relaxation Spectroscopy (DRS) (1)
- Differential Scanning Calorimetry (DSC) (1)
- Donor-Acceptor (DA) interface (1)
- Electronic and spintronic devices (1)
- Escherichia-coli (1)
- FLASH (1)
- Greenland (1)
- Hong-Ou-Mandel effect (1)
- Hypothesis Test (1)
- ISOS-L-1I protocol (1)
- Kuramoto model (1)
- L-Asterisk (1)
- Langevin equation (1)
- Lasers (1)
- Lattice dynamics (1)
- Levy walks (1)
- Lévy flights (1)
- Lévy walks (1)
- MU-M (1)
- Magnetism (1)
- Mode function (1)
- N400 (1)
- NEXAFS (1)
- NM (1)
- Ornstein–Uhlenbeck process (1)
- Ott–Antonsen equation (1)
- P300 (1)
- PIP3 waves (1)
- Perovskite solar cell (1)
- Perovskites (1)
- Phase Synchronization (1)
- Phonons (1)
- Pseudomonas aeruginosa (1)
- Quantum optics (1)
- RIXS (resonant inelastic X-ray scattering) (1)
- Resolved and unresolved sources as a function of wavelength (1)
- Semiconductors (1)
- Shockley-Queisser model (1)
- Sputum (1)
- Supernovae (1)
- Surrogate Data (1)
- Thermal effects (1)
- Thermodynamic properties (1)
- Thin films (1)
- Ultrafast X-ray diffraction (1)
- Vacuum fields (1)
- X-ray (1)
- X-ray absorption (1)
- X-ray emission (1)
- X-ray photoelectron spectroscopy (1)
- X-ray probe (1)
- actin cytoskeleton (1)
- actin polymerization (1)
- activator–inhibitor models (1)
- ageing (1)
- algorithms (1)
- alpha (1)
- aminothiophenol (1)
- amp (1)
- approximate methods (1)
- aspect ratio (1)
- astrophysical plasmas (1)
- atmosphere (1)
- atomic force microscopy (AFM) (1)
- atomic-force; nano-objects (1)
- attribution (1)
- autoregressive models (1)
- azobenzene containing polymer films (1)
- azobenzene elastomers (1)
- bacteria (1)
- bandgap (1)
- behavior (1)
- bidirectional reflectance (1)
- bifurcation theory (1)
- binaries: spectroscopic (1)
- biological physics (1)
- birefringence (1)
- cambridge cb4 0wf (1)
- cambs (1)
- carbon-dioxide emissions (1)
- catalysis (1)
- cesium lead halides (1)
- chains (1)
- channel (1)
- chaotic neural dynamics (1)
- charge-transfer (1)
- chemistry (1)
- chemoattractant (1)
- chemotaxis (1)
- chimera (1)
- chimera states (1)
- chromophore orientations (1)
- circulation (1)
- climate (1)
- climate trends (1)
- climate variability (1)
- cluster analysis (1)
- cluster-analysis (1)
- co-monomer content (1)
- co2 emissions (1)
- codifference (1)
- coefficient (1)
- coefficients (1)
- coherence (1)
- collapse (1)
- color change (1)
- combustion (1)
- complementarity (1)
- complex networks (1)
- confinement (1)
- consequences (1)
- continuation (1)
- continuous time random walk (1)
- cortical network models (1)
- cortical oscillations (1)
- costs (1)
- coupled rotators (1)
- critical avalanche dynamics (1)
- critical phenomena (1)
- crystal orientation (1)
- cyclic-gmp (1)
- cylindrical geometry (1)
- cytoskeleton (1)
- design concepts (1)
- dictyostelium-discoideum (1)
- diffusing diffusivity (1)
- diselenide (1)
- donor (1)
- droughts (1)
- drug-delivery (1)
- dynamics simulation (1)
- efficiency (1)
- elastomers (1)
- electromagnetic radiation (1)
- electron-transfer (1)
- electrons (1)
- electrostatic interactions (1)
- ena/vasp proteins (1)
- energy (1)
- energy use (1)
- england (1)
- enhanced raman-scattering (1)
- ensemble and time averaged mean squared displacement (1)
- entanglement (1)
- entropy production (1)
- equation approach (1)
- erasure (1)
- eukaryotic chemotaxis (1)
- excitable networks (1)
- excitonic materials (1)
- expanding medium (1)
- exploit (1)
- exposed water ice (1)
- extremal values (1)
- fastest first-passage time of N walkers (1)
- ferroelectric polymers (1)
- fill factor losses (1)
- financial time series (1)
- finite-size effects (1)
- fired power plants (1)
- first-hitting time (1)
- first-passage (1)
- first-passage time distribution (1)
- first-reaction time (1)
- flagellum (1)
- flexible (1)
- fluctuating surfaces (1)
- fluorinated organic spacer (1)
- forced symmetry breaking (1)
- fractional dynamics (1)
- galaxies: high-redshift (1)
- gamma-rays: general (1)
- gas (1)
- gas phase electron spectroscopy (1)
- gene regulatory networks (1)
- general relativity (1)
- generalised langevin equation (1)
- genomic DNA conformation (1)
- geometric Brownian motion (1)
- giant planets (1)
- global jets (1)
- global surface warming (1)
- gradients (1)
- grafted polymers (1)
- gravity (1)
- ground based gamma ray astronomy (1)
- harmonic traps (1)
- helical magnetic fields (1)
- heterojunction silicon solar cells (1)
- hierarchical modular networks (1)
- hydrogels (1)
- hysteresis (1)
- ice absorption features (1)
- induced deformation (1)
- inference (1)
- inorganic perovskites (1)
- instability (1)
- interface engineering (1)
- interfaces (1)
- interstellar ice (1)
- intrinsic neuronal diversity (1)
- inventory (1)
- irregular firing activity (1)
- kinetic instabilities (1)
- kink instability (1)
- large-deviation statistic (1)
- laser pulses (1)
- light-induced deformation (1)
- linearized gravity (1)
- literature review (1)
- living cells (1)
- magnetosphere (1)
- magnetospheric physics (1)
- magnetostriction (1)
- mass conservation (1)
- mass-transport (1)
- maximum and range (1)
- mean versus most probable reaction times (1)
- mechanisms (1)
- membrane (1)
- membrane channel (1)
- memory and delay (1)
- metal (1)
- metal halide perovskites (1)
- metal nanoparticles (1)
- methodology (1)
- mhd turbulence (1)
- microscopy (1)
- mid-temperature transition (1)
- migration (1)
- milton rd (1)
- mixed boundary conditions (1)
- molecular bottle brushes (1)
- molecular dynamics (1)
- molecule (1)
- monte-carlo (1)
- motion (1)
- motion of adsorbed nano-particles (1)
- motivation (1)
- murchison meteorite (1)
- mutual information (1)
- nanoparticles (1)
- nanoscale heat transfer (1)
- narrow escape problem (1)
- negative thermal expansion (1)
- network (1)
- neuronal networks (1)
- next generation Cherenkov telescopes (1)
- nitrogen (1)
- noisy systems (1)
- non-Gaussian diffusion (1)
- non-Gaussianity (1)
- non-radiative interface recombination (1)
- non-radiative recombination (1)
- nonfullerene acceptors (1)
- nonlinear waves (1)
- nonlocally coupled phase oscillators (1)
- nonradiative voltage losses (1)
- northern (1)
- nucleobases (1)
- numerical simulations (1)
- ocean heat uptake (1)
- one-dimensional Bose gas (1)
- optical manipulation (1)
- optical near-field (1)
- organic solar cell (1)
- organic solar cells (1)
- origins (1)
- osmotic-pressure (1)
- osmotic-stress (1)
- particle-in-cell simulations (1)
- particles (1)
- pattern formation (1)
- pause hiatus (1)
- pedagogical content knowledge (PCK) (1)
- pedagogical reasoning (1)
- ph-responsive microgels (1)
- phase purity (1)
- phase synchronization (1)
- phase transition (1)
- phonon modes (1)
- phosphorylation (1)
- photo-isomerization kinetics (1)
- photo-sensitive surfactant (1)
- photocatalysis (1)
- photocontrol (1)
- photoelectron (1)
- photofragmentation (1)
- photon recycling (1)
- photoresponsive surfactants (1)
- photosensitive surfactants (1)
- photostability (1)
- physics education (1)
- picosecond ultrasonics (1)
- piezoelectric polymers (1)
- pitch angle (1)
- planetary wave resonance (1)
- plasma (1)
- plasma-membrane (1)
- poly (acrylic acid, sodium salt) (1)
- polyelectrolyte adsorption (1)
- posttranslational protein translocation (1)
- potential-energy surface (1)
- power spectral analysis (1)
- power spectrum (1)
- pp-wave solutions (1)
- pre-service teachers (1)
- prediction (1)
- projections (1)
- protein search (1)
- protonation (1)
- pyroelectric polymers (1)
- quantum mechanics (1)
- quasi-Fermi level (1)
- quasi-Fermi level splitting (1)
- quasi-steady-state photoinduced absorptions (1)
- radiative limit (1)
- radio (1)
- raman (1)
- raman-scattering (1)
- random walk (1)
- random-walk (1)
- random-walks (1)
- reaction cascade (1)
- recognition (1)
- recombination (1)
- recombinations (1)
- rectification (1)
- refined consensus model (RCM) (1)
- reflecting boundary conditions (1)
- region (1)
- relativistic jets (1)
- repertory grid (1)
- resolution infrared-spectroscopy (1)
- resonant inelastic X-ray scattering; (1)
- roughness (1)
- royal soc chemistry (1)
- scattering (1)
- science park (1)
- science teaching (1)
- selective bond cleavage (1)
- self-sustained activity (1)
- semantic incongruity (1)
- seperation (1)
- sequence-controlled polymers (1)
- series (1)
- shell-like geometries (1)
- signaling system (1)
- simulations (1)
- single chain folding (1)
- single trajectories (1)
- single trajectory analysis (1)
- single-particle tracking (1)
- single-stranded-dna (1)
- soft X-ray beamline (1)
- soft X-ray spectroscopy (1)
- solar coronal mass ejections (1)
- solar storm (1)
- solid-state nanopores (1)
- soliton (1)
- space-dependent diffusivity (1)
- spatial localization (1)
- spectra (1)
- spectroscopy (1)
- spectrum (1)
- splitting (1)
- spontaneous parametric down-conversion (1)
- stability (1)
- star formation (1)
- stars: AGB and post-AGB (1)
- stars: Wolf-Rayet (1)
- stars: atmospheres (1)
- states (1)
- stationary stochastic process (1)
- stellar coronal mass ejections (1)
- stochastic models (1)
- stochastic processes (1)
- stochastic resetting (1)
- structured polynucleotides (1)
- subdiffusion (1)
- sulfur (1)
- swelling behavior (1)
- synchronization transition (1)
- tandem solar cells (1)
- teaching practice (1)
- temperature (1)
- temperature dependence (1)
- temperature fluctuation (1)
- thermodynamics (1)
- theta (1)
- thin films (1)
- thin-films (1)
- thiouracil (1)
- thomas graham house (1)
- time (1)
- time averaging (1)
- time series analysis (1)
- time-averaged mean squared displacement (1)
- tracking (1)
- transduction (1)
- transfer dynamics (1)
- travelling waves (1)
- ultrafast dynamics (1)
- ultrafast photoacoustics (1)
- ultrafast x-ray diffraction (1)
- uncertainties (1)
- unferring cellular networks (1)
- up-down states (1)
- urbanization (1)
- vacuum fields (1)
- variables (1)
- vinylidenefluoride (VDF)-based polymers (1)
- voltage losses (1)
- water-vapor (1)
- wavelength (1)
- young stellar objects (1)
- Æ Recurrence Plots (1)
Institute
A method for the multivariate analysis of statistical phase synchronization phenomena in empirical data is presented. A first statistical approach is complemented by a stochastic dynamic model, to result in a data analysis algorithm which can in a specific sense be shown to be a generic multivariate statistical phase synchronization analysis. The method is applied to EEG data from a psychological experiment, obtaining results which indicate the relevance of this method in the context of cognitive science as well as in other fields.
In order to investigate the temporal characteristics of cognitive processing, we apply multivariate phase synchronization analysis to event-related potentials. The experimental design combines a semantic incongruity in a sentence context with a physical mismatch (color change). In the ERP average, these result in an N400 component and a P300-like positivity, respectively. The synchronization analysis shows an effect of global desynchronization in the theta band around 288ms after stimulus presentation for the semantic incongruity, while the physical mismatch elicits an increase of global synchronization in the alpha band around 204ms. Both of these effects clearly precede those in the ERP average. Moreover, the delay between synchronization effect and ERP component correlates with the complexity of the cognitive processes.
Phase synchronization analysis, including our recently introduced multivariate approach, is applied to event-related EEG data from an experiment on language processing, following a classic psycholinguistic paradigm. For the two types of experimental manipulation distinct effects in overall synchronization are found; for one of them they can also be localized. The synchronization effects occur earlier than those found by the conventional analysis method, indicating that the new approach provides additional information on the underlying neuronal process.
In Allefeld & Kurths [2004], we introduced an approach to multivariate phase synchronization analysis in the form of a Synchronization Cluster Analysis (SCA). A statistical model of a synchronization cluster was described, and an abbreviated instruction on how to apply this model to empirical data was given, while an implementation of the corresponding algorithm was (and is) available from the authors. In this letter, the complete details on how the data analysis algorithm is to be derived from the model are filled in.
Bacterial chemotaxis-a fundamental example of directional navigation in the living world-is key to many biological processes, including the spreading of bacterial infections. Many bacterial species were recently reported to exhibit several distinct swimming modes-the flagella may, for example, push the cell body or wrap around it. How do the different run modes shape the chemotaxis strategy of a multimode swimmer? Here, we investigate chemotactic motion of the soil bacterium Pseudomonas putida as a model organism. By simultaneously tracking the position of the cell body and the configuration of its flagella, we demonstrate that individual run modes show different chemotactic responses in nutrition gradients and, thus, constitute distinct behavioral states. On the basis of an active particle model, we demonstrate that switching between multiple run states that differ in their speed and responsiveness provides the basis for robust and efficient chemotaxis in complex natural habitats.
We report on the detection of very high energy (VHE; E > 100 GeV) gamma-ray emission from the BL Lac objects KUV 00311-1938 and PKS 1440-389 with the High Energy Stereoscopic System (H.E.S.S.). H.E.S.S. observations were accompanied or preceded by multiwavelength observations with Fermi/LAT, XRT and UVOT onboard the Swift satellite, and ATOM. Based on an extrapolation of the Fermi/LAT spectrum towards the VHE gamma-ray regime, we deduce a 95 per cent confidence level upper limit on the unknown redshift of KUV 00311-1938 of z < 0.98 and of PKS 1440-389 of z < 0.53. When combined with previous spectroscopy results, the redshift of KUV 00311-1938 is constrained to 0.51 <= z < 0.98 and of PKS 1440-389 to 0.14 (sic) z < 0.53.