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On physical limitations for broadband electromagnetic scattering --- high order spherical waves

Limitations on the scattering matrix are derived for a wide class of objects, restricting their broadband interaction with electromagnetic vector spherical waves in terms of their size, shape and static material properties. In particular, it is seen that the order of the dominating term for electrically small objects increases with the order of the spherical wave. The results are applicable to man

I ett andetag : En kulturanalys av astma som begränsning och möjlighet

Though asthma is a commonly occurring disorder today, the development and introduction of anti-inflammatory drugs in treating it has changed the possibilities of living with it. At the same time, the Swedish guidelines for asthma care have changed: the patient is to take responsibility for her or his chronic illness to attain full quality of life. The study aims to make a cultural analytical inves

Aurea Norma

The aim of this thesis was mainly to find out the conditions under which a modernisation of the standardisation process could realistically take place, in order to allow the inclusion of parameters that are currently ignored. The necessary balance between private interests and public good issues, and the need to take into the discussions leading to the adoption of standards, their generally heavy

IP security – a disruptive or sustaining technology shift?

The shift towards IP-based security products and systems is often touted as an example of a disruptive technology that have had – and will continue to have – profound consequences for the electronic security industry as a whole. Based on Clayton Christensen’s theories on disruptive innovation, this document argues that the in- troduction of IP-based technology has different effects depending on th

Local Capacity Building: A Logistics Perspective in Disaster Relief

With the growing number of natural and social crisis in recent years, and the main impact being on countries with poor social and physical infrastructure, as part of the bigger aim of humanitarian sector in helping communities develop, building local capacities becomes an important issue to consider. Considering logistics taking up more than three fourth of relief operations, the purpose of this p

Dynamics of Excitation Transfer and Charge Separation in Polymeric Semiconductors

Dynamics of optically excited electronic states have been studied in solid films and solutions of semiconducting polymers and model compounds. Transient absorption, monitored in the spectral range from 0.9 eV to 2.5 eV with a time resolution of about 100 fs, was the main experimental technique. Transient anisotropy, obtained from different polarizations of light, was employed to trace the dipole m

Parametric Study of Emissions from Low Calorific Value Syngas Combustion, with Variation of Fuel Distribution, in a Prototype Three Sector Burner

The emission composition is measured for a prototype burner while varying the equivalence ratio in discrete portions of the burner. The burner is a three sector system, consisting of a separate igniter, pilot/stabilizer and main burner. The design allows for discrete control of equivalence ratio in each of the three sectors. The ignition sector, designated RPL (Rich- Pilot-Lean), operates from ric