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Scattering from dielectric frequency selective structures

A plane wave impinges on a laterally double-periodic inhomogeneous lossy dielectric structure. Using a wave splitting approach, and an expansion of the fields and permittivity in global and local basis functions, respectively, the scattered fields are determined via a propagator. The formulation is useful for a permittivity which varies abruptly as well as in a continuous fashion. A subdomain basis

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Using ’critical friends’ as a strategy to enhance teaching and learning within an educational program

Controlling Combustion Phasing of Recompression HCCI with a Switching Controller

Homogeneous charge compression ignition (HCCI) is more efficient and produces significantly less NOx emissions compared to spark ignitions. Using an exhaust recompression strategy to achieve HCCI, however, produces cycle-to-cycle coupling which makes the problem of controlling combustion phasing more difficult. In the past, a linear feedback controller designed with a single linearized model is ef

Local Density of States and Interface Effects in Semimetallic ErAs Nanoparticles Embedded in GaAs

“At the Expense of the State: Politics of Rent Allocations in the Gul Oil monarchies"

Will new technology be sufficient to solve the problem of air pollution caused by Swedish transport.

Generalisation Methods for Propagating Updates between Cartographic Data Sets

Automation is increasingly important in producing and maintaining cartographic data sets. This thesis deals with automatic methods to propagate updates between cartographic data sets. The major idea is to update only the most detailed data set (master data set) and then propagate these updates automatically to less detailed data sets (target data sets). The approach used is firstly to formulate li

Projective invariants for affine shapes of point configurations

Risk in practice – Senior bank managers at work?

High-frequency switching and Kerr effect - nonlinear problems solved with nonstationary time domain techniques

A time domain method building on the concept of wave splitting is used to study direct wave propagation phenomena in weakly nonlinear media. The starting point is the linear wave equation with time-dependent coefficients. This means that the studied nonlinear medium in some sense has to be approximated with a nonstationary medium which changes while the wave passes through. For the nonstationary e

Sum Rules for Parallel Plate Waveguides: Experimental Results and Theory

An experimental approach to verify the forward scattering sum rule for periodic structures is presented. This approach allows an upper bound on the total cross section integrated over a bandwidth from a simple static problem to be found. Based on energy conservation, the optical theorem is used to construct a relation between the total cross section and the forward scattering of periodic structure

Pedagogiska verktyg för att förebygga plagiat - en plattform för samarbete mellan bibliotek och ämne

Looking for the "common sense" or what a compost heap tells us about the environment

Experienced life-situation in persons with severe chronic illness and injuries. Interviews about loss, problems, coping and quality of life.

Public perceptions and values and perceptions of importance for Sustainable Consumption policy?

A reduced complexity Viterby equalizer used in conjunction with a pulse shaping method

Real-Time Visualisation of Large Fibre Networks

Heavy flavor production in PHENIX.