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Popular Abstract in Swedish En enkel beskriving av atomen kan utgå från Bohrs atommodell (som emellertid ej är användbar för en exaktare beskrivning): runt kärnan, som består av positivt laddade protoner och neutrala neutroner, kretsar elektroner. Vilket grundämne det är bestäms av antalet protoner i kärnan. Antalet elektroner för en atom är detsamma som antalet protoner i kärnan. Tillförs atomen Atomic data are needed in many different areas of science and technology. Examples of users are the astronomical community and the lighting industry. In this work, the purpose of the projects has been to produce reliable atomic data needed to solve specific astrophysical problems. Oscillator strengths, which are needed when analysing stellar absorption spectra as well as spectra of emission line o

The field of cadastre holds an inherent complexity much based on its interdisciplinary characteristics and the national uniqueness of each cadastral system. In addition, some cadastral terminology is vague or ambiguous, why omission of the explicit sense and context of a particular term may bring obscurity to international comparisons and analyses. The concept legal coordinated cadastre, occasiona

According to medieval canon law, a marriage could be declared invalid if the consent had been given through force or fear. This ruling was a natural consequence of the insistence on free consent as the only requirement for a valid marriage. It did, however, entail a number of both practical and theoretical problems. It could be difficult to prove force and fear within the family, but also to defin

The use of control-based methods for resource management in real-time computing and communication systems has gained a substantial interest recently. Applications areas include performance control of web-servers, dynamic resource management in embedded systems, traffic control in communication networks, transaction management in database servers, error control in software systems, and autonomic co

This thesis presents a new technique to prove the convergence of finite difference methods applied to nonlinear Systems arising in computational fluid dynamics. The underlying Systems are either hyperbolic such as the Euler equations or mixed hyperbolic-parabolic like the Navier-Stokes equations. We analyze implicit finite-difference methods. As the argument is based on the concept of consistency

Direct and inverse scattering from dispersive media are studied in the time domain. The media are one-dimensional and homogeneous but can be impedance mismatched to the surrounding media. A time domain method is introduced where the reflection and transmission kernels are obtained from Volterra equations of the second kind. Numerical examples are given based upon both synthetic and measured data f

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