Sökresultat

The identification of nonlinear chirp signals has attracted notable attention in the recent literature, including estimators such as the variational mode decomposition and the nonlinear chirp mode estimator. However, most presented methods fail to process signals with close frequency intervals or depend on user-determined parameters that are often non-trivial to select optimally. In this work, we

The Sustainable Development Goals (SDGs) with their 169 targets and 231 indicators epitomise the trend of global governance by numbers. This article suggests the notion of a global “indicator reporting trajectory” that is shaped by three main elements: the politics of indicators, a reporting infrastructure and indicator advocacy. I propose that indicator reporting trajectories may result either in

Background: The etiology of giant cell arteritis (GCA) and its predictors are incompletely understood. Previous studies have indicated reduced risk of future development of GCA in individuals with obesity and/or diabetes mellitus. There is limited information on blood lipids before the onset of GCA. The objective of the study was to investigate the relation between apolipoprotein levels and future

Current literature show that frequency diverse arrays (FDAs) are able of producing range–angle-dependent and time-variant transmit beampatterns, but the resulting time and range dependencies and their characteristics are still not well understood. This paper examines the FDA transmission model with an emphasis on analyzing the beam auto-scanning characteristics and the equivalence with the MIMO be

In this paper, we considered the real-time modeling of an underwater channel impulse response (CIR), exploiting the inherent structure and sparsity of such channels. Building on the recent development in the modeling of acoustic channels using a Kronecker structure, we approximated the CIR using a structured and sparse model, allowing for a computationally efficient sparse block-updating algorithm

In an epilogue, Daniel Hjorth and Chris Steyaert aim to further multiply the new movements in academic entrepreneurship that this volume identifies. Therefore, they introduce a conceptual quartet that makes and keeps movement going: provocation, mobilization, affirmation, and experimentation. Their conceptual contribution, which has to be seen as an attempt to stir and disturb, relates these four

This article presents an online survey with 323 respondents and 28 semi-structured interviews performed to investigate people’s perceptions of fire evacuation training and their attitudes towards it. The survey results showed that respondents with experience in fire evacuation training judge a fire in buildings that feature non-combustible materials to be more severe than other people, but no effe

Background Early life factors may predict cardiovascular disease (CVD), but the pathways are still unclear. There is emerging evidence of an association of early life factors with apolipoproteins, which are linked to CVD. The study objective was to assess the associations between birth variables and adult apolipoproteins (apoA1 and apoB, and their ratio) in a population-based cohort. Methods The L