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In the late 1980’s Hitchin [51] and Simpson [71] discovered deep connections
between representations of fundamental groups of surfaces and algebraic geometry.
ASSESSMENT OF SENSOR CHARACTERISTICS OF AN AIRBORNE LASER SCANNER USING GEOMETRIC REFERENCE TARGETS
laser scanning accuracy high resolution point clouds sensor specifi cations
2015/8/13
In order to get an experimental insight on the characteristics of a modern airborne laser scanning system, we carry out
a set of experiments using geometrical targets on an air strip and use differen...
Extrinsic curvature, geometric optics, and lamellar order on curved substrates
Two-dimensional layer model layer bend geometric constraints and physical effects
2014/12/19
When thermal energies are weak, two-dimensional lamellar structures confined on a curved substrate display complex patterns arising from the competition between layer bending and compression in the pr...
Geometric symmetries in superfluid vortex dynamics
Quantization vortex line fluid dynamics fluid flow vortex dynamics
2014/12/18
Dynamics of quantized vortex lines in a superfluid feature symmetries associated with the geometric character of the complex-valued field, w(z)=x(z)+iy(z), describing the instant shape of the line. Al...
THE FUTURE SPACEBORNE HYPERSPECTRAL IMAGER ENMAP: ITS IN-FLIGHT RADIOMETRIC AND GEOMETRIC CALIBRATION CONCEPT
Geometric Calibration Radiometric Calibration Hyper spectral Satellite
2014/4/25
The German Aerospace Center DLR – namely the Earth Observation Center EOC and the German Space Operations Center GSOC – is responsible for the establishment of the ground segment of the future German ...
Geometric numerical schemes for the KdV equation
KdV equation symplectic scheme multi-symplectic scheme solitonic gas wave turbulence
2012/5/29
Geometric discretizations that preserve certain Hamiltonian structures at the discrete level has been proven to enhance the accuracy of numerical schemes. In particular, numerous symplectic and multi-...
Geometric shape dependence of coercivity for patterned magnetic thin films
Coercivity E-beam lithography Micro-structure Shaped-dependence Canting
2011/11/30
The micro-strips with patterned magnetic domains using electron beam lithography have been made to study the geometric shape dependence of coercivity. The size of the micro-strip is 10 lm]30 lm with 0...
Relativistic Quantum State, Geometric Phase and Dissipationless Spin current
Relativistic Quantum State Geometric Phase Dissipationless Spin current
2011/8/11
Abstract: Spin current of a Dirac particle is shown to be given by the geometric phase and in terms of the later, a closed form expression is obtained for the dissipationlessness of the spin current.
Geometric relation for neutrino mixing angles and theta(13)
Geometric relation neutrino mixing angles theta(13)
2011/8/3
Abstract: Inspired by the recent T2K indication of a relatively large theta(13) angle in the neutrino mixing matrix we propose here a definite geometric relation between the three usually thought "ind...
A geometric derivation of the linear Boltzmann equation for a particle interacting with a Gaussian random field
Processes in random environments Quantum field theory Coherent states Kinetic theory of gases
2011/8/25
Abstract: The linear Boltzmann equation is derived from a microscopic quantum model of a particle interacting, in the weak coupling limit, with a translation invariant and centered Gaussian random fie...
A ten-dimensional action for non-geometric fluxes
ten-dimensional action non-geometric fluxes High Energy Physics - Theory
2011/7/28
Abstract: The NSNS Lagrangian of ten-dimensional supergravity is rewritten via a change of field variables inspired by Generalized Complex Geometry. We obtain a new metric and dilaton, together with a...
Geometric Allocation Approach for Transition Kernel of Markov Chain
Markov chain Transition kernel Geometric allocation Reversibility
2011/7/28
Abstract: We introduce a new geometric approach that constructs a transition kernel of Markov chain. Our method always minimizes the average rejection rate and even reduce it to zero in many relevant ...
Geometric Allocation Approach for Transition Kernel of Markov Chain
Markov chain, Transition kernel, Geometric allocation, Detailed balance, Reversibility
2011/9/14
We introduce a new geometric approach that constructs a transition kernel of Markov chain. Our method always minimizes the average rejection rate and even reduce it to zero in many relevant cases,whic...
Role of Azimuthal Energy Flows in the Geometric Spin Hall Effect of Light
Light beam Circular polarization Oblique incidence Lateral shift Transverse energy flow Angular momentum
2011/8/29
In an oblique section of a paraxial beam with angular momentum, the beam center of gravity (CG) is shifted with respect to its position in the normal cross section. We relate this shift with the inter...
Differential geometric formulation of the Cauchy Navier equations
differential geometry differential forms lie derivatives linear elasticity Cauchy Navier equations
2011/7/25
Abstract: The paper presents a reformulation of some of the most basic entities and equations of linear elasticity - the stress and strain tensor, the Cauchy Navier equilibrium equations, material equ...