Filtyp
Purpose - The purpose of this paper is to present some methods to analyse and determine the performance of compact heat exchangers; show the applicability of various computational approaches and their limitations, provide examples to demonstrate the methods, and present results to highlight the opportunities and limitations of the considered methods. Design/methodology/approach - Engineering metho
Sweden is one of the countries in Europe with the largest percentage of volunteers in the population. At the same time, challenges in the society are increasing. Events such as the migration crisis 2015, the wildfires 2018 and the Covid-19 pandemic have shown an expanding interest among people to contribute to society. As a private person it can be hard to know where to start when wanting to becom
Nuclear Quadrupole Resonance (NQR) is a radio frequency (RF) technique that can be used to detect the presence of quadrupolar nuclei, such as the 14N nucleus prevalent in many explosives and narcotics. The technique has been hampered by low signal-to-noise ratios and is further aggravated by the presence of RF interference (RFI). To ensure accurate detection, proposed detectors should exploit the
This paper explores the processing of sensitive personal data for genealogical purposes by studying how the privacy policies of three direct-to-consumer genetic testing companies relate to the general Data Protection Regulation (GDPR). The methodological approach is content analysis. The privacy policies are analysed in relation to the three core principles of 1) adherence to GDPR; 2) transparent
We study the solvability for a system of pseudodifferential operators. We will assume that the systems is of principal type, i.e., the principal symbol vanishes of first order on the kernel, and that the eigenvalue close to zero has constant multiplicity. We prove that local solvability is to condition (PSI) on the eigenvalues as in the scalar case. This condition rules out any sign changes from -
It is suggested that Proto-Nordic /r/ was velar or uvular and /z/ postdental. It is suggsted that the two pronunciations were preserved in different areas after the phonemic merger: postdental in central Sweden and Norway and velar/uvular in the south of Scandinavia. The idea that the velar /r/ was imported from France int he 17th or 18th century is rejected.
Eighty patients with monoradicular sciatica were examined by myelography, computed tomography (CT) and magnetic resonance imaging (MRI) and all had subsequent surgery. The images were evaluated by a decision-analytic regret function. The largest amount of diagnostic information was gained from CT followed by MRI and myelography. Myelography was not significantly informative. The results suggest th
