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Time-domain maximum-likelihood (ML) estimators of time and frequency offsets are derived for three orthogonal frequency division multiplexing (OFDM) signal models: a pulse-shaped one-shot OFDM signal, a stream of multiple OFDM signals and an OFDM signal in a dispersive channel environment. We then develop structures to simplify their implementation. Simulation results show the relative performance
A modification of the constrained geometry optimization method by Anglada and Bofill (Anglada, J. M.; Bofill, J. M. J. Comput. Chem. 1997, 18, 992-1003) is designed and implemented. The changes include the choice of projection, quasi-line-search, and the use of a Rational Function optimization approach rather than a reduced-restricted-quasi-Newton-Raphson method in the optimization step. Furthermo
All stars are formed in some form of cluster or association. These environments can have a much higher number density of stars than the field of the galaxy. Such crowded places are hostile environments: a large fraction of initially single stars will undergo close encounters with other stars or exchange into binaries. We describe how such close encounters and exchange encounters will affect the pr
Flexible goniometers are useful for direct movement measurements. Crosstalk due to rotation between the endblocks is well known. However, even without any rotation, some crosstalk can occur. The objective of this study was to elucidate the effect of, and compensate for, the inherent crosstalk in biaxial goniometers, with specific relevance for applications with one dominating movement direction. S
Over the past decade, numerous assays for forensic age estimation based on the analysis of DNA methylation markers have been developed, demonstrating significant potential for use in criminal investigations. Despite these advancements, only few comprehensive evaluation studies were published. In this study, we present findings of an extensive inter-laboratory evaluation of the VISAGE Enhanced Tool
Natural history museum collections (NHC) represent an underutilized yet valuable resource for tracking environmental changes and anthropogenic impacts on marine ecosystems. Historical samples, particularly foraminifera collected during marine expeditions from the late 1800s to mid-1900s, offer crucial baseline data pre-dating significant human influence. These collections, often accompanied by oce
An experimental study of smoke propagation from an apartment to an escape route corridor in a real-scale residential building is presented in this paper. The experiments were performed using the same experimental setup but with different ventilation and apartment door opening times. The setup consisted of a fire in a two-seater sofa in an apartment connected to a corridor and other apartments. A t
Literature reviewsfrom various countries indicate a difference between calculated and measuredbuilding energy use, often known as the ‘energy performance gap’. This articleexplores the existence and magnitude of the energy performance gap in Swedenand identifies possible reasons behind it. A general evaluation of Swedishbuildings showed a median discrepancy between 10–20%. To explore causes,semi-s
In the active exploration of novel biobased semicrystalline polyesters to replace petrochemical plastics, AB-type aromatic condensation polymerizations are relatively rarely investigated but gain growing attention due to the straightforward synthesis of AB-type monomers from diverse asymmetric biobased feedstocks. However, achieving high molecular weights through AB-type melt polycondensations is
Professor emeritus Contact details Email: per [dot] samuelsson [at] jur [dot] lu [dot] seOrganisation Department of Law Service point: 56 WebpagePer Samuelssons profile in Lund University research portalOther affiliations Researcher Lund University Centre for Business Law (Swedish abbr: ACLU) Visiting professor Department of Business Law Profile area member LTH Profile Area: Circular Building Sect
https://www.law.lu.se/samuelsson - 2026-05-09
Microsoft Word - National PhD Course in Political Geography VT17 proposal.docx National PhD Course in Political Geography Spring 2017, 7.5 ECTS Course organizers: Dr. David Jansson, Department of Social and Economic Geography, Uppsala University (david.jansson@kultgeog.uu.se) Dr. Madeleine Eriksson, Department of Geography and Economic History, Umeå University (madeleine.eriksson@geography.umu.se)
https://www.keg.lu.se/sites/keg.lu.se/files/nationella_forskarkurser_-_political-geography_2017.pdf - 2026-05-10
