2,222 research outputs found
Dante's Inferno
We present a simple two-field model of inflation and show how to embed it in
string theory as a straightforward generalization of axion monodromy models.
Phenomenologically, the predictions are equivalent to those of chaotic
inflation, and in particular include observably large tensor modes. The whole
high-scale large-field inflationary dynamics takes place within a region of
field space that is parametrically subplanckian in diameter, hence improving
our ability to control quantum corrections and achieve slow-roll inflation
Multibondic Cluster Algorithm
Inspired by the multicanonical approach to simulations of first-order phase
transitions we propose for -state Potts models a combination of cluster
updates with reweighting of the bond configurations in the
Fortuin-Kastelein-Swendsen-Wang representation of this model. Numerical tests
for the two-dimensional models with and show that the
autocorrelation times of this algorithm grow with the system size as , where the exponent takes the optimal random walk value of
.Comment: 3 pages, uuencoded compressed postscript file, contribution to the
LATTICE'94 conferenc
Anwendungs- und Haftungsfragen zum Deutschen Corporate Governance Kodex
Am 26.02.2002 hat die von der Bundesministerin der Justiz auf Empfehlung der Regierungskommission Corporate Governance eingesetzte Kodex-Kommission den Deutschen Corporate Governance Kodex (im folgenden: DCG-Kodex/Kodex) vorgelegt. Mit Inkrafttreten des Transparenz- und Publizitätsgesetzes4, voraussichtlich im August 2002, werden Vorstand und Aufsichtsrat börsennotierter Aktiengesellschaften künftig jährlich zu erklären haben, ob sie den Empfehlungen des Kodex folgen, und, soweit dies nicht der Fall ist, Abweichungen offen zu legen haben. Im folgenden ist zunächst das Kodex-Konzept, das dem angelsächsischen Rechtskreis entstammt, zu erläutern und die mit dem DCG-Kodex verfolgte Zielsetzung vorzustellen (dazu B.). Dem schließt sich ein Überblick über Regelungstechnik und Inhalt des DCG-Kodex sowie dessen gesetzliche „Flankierung“ durch das TransPuG an (dazu C.). Sodann werden die Entsprechens-Erklärung (dazu D.) sowie Haftungsfragen im Zusammenhang mit dem DCG-Kodex (dazu E.) behandelt
Identification of Bed Zones and Flow Regimes in Single and Multiple Spout-Operated Beds by Digital Image Processing and Pressure Probes
Proteomics-on-a-chip for Biomarker discovery
In proteomics research still two-dimensional gel electrophoresis (2D-GE) is currently used for biomarker discovery. We applied free flow electrophoresis (FFE) separation technology combined with biomolecular interaction sensing using Surface Plasmon Resonance (SPR) imaging in an integrated proteomics-on-a-chip device as a proof of concept for biomarker discovery
Surface effects in the crystallization process of elastic flexible polymers
Investigating thermodynamic properties of liquid-solid transitions of
flexible homopolymers with elastic bonds by means of multicanonical Monte Carlo
simulations, we find crystalline conformations that resemble ground-state
structures of Lennard-Jones clusters. This allows us to set up a structural
classification scheme for finite-length flexible polymers and their freezing
mechanism in analogy to atomic cluster formation. Crystals of polymers with
"magic length" turn out to be perfectly icosahedral
Classically entangled optical beams for high-speed kinematic sensing
Tracking the kinematics of fast-moving objects is an important diagnostic
tool for science and engineering. Existing optical methods include high-speed
CCD/CMOS imaging, streak cameras, lidar, serial time-encoded imaging and
sequentially timed all-optical mapping. Here, we demonstrate an entirely new
approach to positional and directional sensing based on the concept of
classical entanglement in vector beams of light. The measurement principle
relies on the intrinsic correlations existing in such beams between transverse
spatial modes and polarization. The latter can be determined from intensity
measurements with only a few fast photodiodes, greatly outperforming the
bandwidth of current CCD/CMOS devices. In this way, our setup enables
two-dimensional real-time sensing with temporal resolution in the GHz range. We
expect the concept to open up new directions in photonics-based metrology and
sensing.Comment: v2 includes the real-time measurement from the published version.
Reference [29] added. Minor experimental details added on page
Effects on honey bee colonies following a granular application of Santana® containing the active ingredient clothianidin in maize in 2010 and 2011
- …