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Understanding the interaction between electromagnetic waves and matter is vital in applications ranging from classical optics to antenna theory. This paper derives physical limitations on the scattering of electromagnetic vector spherical waves. The assumptions made are that the heterogeneous scatterer is passive, and has constitutive relations which are on convolution form in the time domain and
Popular Abstract in Swedish Syftet med den här licentiatuppsatsen är dels att beskriva äldre människors intresse av och möjligheter till att använda TV:n till annat än traditionellt TV-tittande, dels att beskriva olineariteterna i den designprocess i vilken detta arbete ägde rum. Konceptet ”Den utsträckta TV:n” utvecklades och provades (av äldre människor, deras anhöriga och personal) i en ny våThe aim of this licentiate thesis is twofold: 1) to describe old people’s interest in and prospects of using the television for something other than traditional TV viewing, and 2) to describe the nonlinearities in the design process in which this research was performed. A concept called The Extended TV was developed and tested (by old people, their relatives and care workers) in a new nursing home
Design of buildings is a complex task in which ideas are sketched and communicated, by representations that are incrementally elaborated from the early rough sketches to the final design. We claim, that today’s model–based design tools are restricted from fully supporting this process as they are founded on the principle that objects are instances of static types. Such systems do not offer work wi
This report comprises the article "Efficient approximation of the inductance of a cylindrical current sheet" and two supplementary sections. The first section treats the question of how to calculate the inductance of a coil. The second section is aimed at providing a theoretical background to the computed approximations of the article. The second section is also intended to demonstrate that the ef
Bangladesh has made significant progress in health indicators in recent years in spite of her low level of income. This is mainly due to the commitment of the state supported by donors in providing preventive care with respect to child health and family planning. However, there are serious problems related to both access and quality of curative care that hurt the poor most. Infrastructures for ser
