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Sparse sums of Lorentzians can give good approximations to functions consisting of linear combination of piecewise continuous functions. To each Lorentzian, two parameters are assigned: translation and scale. These parameters can be found by using a method for complex frequency detection in the frequency domain. This method is based on an alternating projection scheme between Hankel matrices and f
The Usushwana Complex of the south-eastern Kaapvaal Craton (South Africa and Swaziland), intrudes the ca. 3.6-3.1 Ga basement of the craton, as well as the Mesoarchaean volcanic and sedimentary cover succession of the Pongola Supergroup. New high-precision U-Pb dating of gabbros belonging to the Piet Retief Suite of the Usushwana Complex yield ages of 2989 +/- 1 Ma, 2990 +/- 2 Ma and 2978 +/- 2 Ma
Background: The understanding of the influence of smoking and sex on lung function and symptoms is important for understanding diseases such as COPD. The influence of both genes and environment on lung function, smoking behaviour and the presence of respiratory symptoms has previously been demonstrated for each of these separately. Hence, smoking can influence lung function by co-varying not only
We discuss how techniques from multiresolution analysis and phase space transforms can be exploited in solving a general class of evolution equations with limited smoothness. We have wave propagation in media of limited smoothness in mind. The frame that appears naturally in this context belongs to the family of frames of curvelets. The construction considered here implies a full-wave description
The Southern Ocean is split into several biogeographical provinces between convergence zones that separate watermasses of different temperatures. Recent molecular phylogenies have uncovered a strong phylogeographic structure among rockhopper penguin populations, Eudyptes chrysocome sensu lato, from different biogeographical provinces. These studies suggested a reclassification as three species in
We present a new implementation of the time-resolved fluorescence anisotropy technique for the analysis of carbon nanoparticles directly in a Bunsen-type propane flame. By exploiting femtosecond laser excitation, UV-visible laser-induced fluorescence and time resolution of the experimental set-up, small soot nanoparticles have been identified within the flame. From the measurement of the decay tim
Secreted proteins playa crucial role in intercellular communication during embryogenesis and in the adult. We recently described a novel method, designated as secretion cloning, that allows identifying extracellular proteins exclusively based on their ability to be secreted by transfected cells. In this paper, we present the results of a large-scale screening of more than 90,000 clones from three
In TSP with neighborhoods (TSPN) we are given a collection S of regions in the plane, called neighborhoods, and we seek the shortest tour that visits all neighborhoods. Until now constant-factor approximation algorithms have been known only for cases where the neighborhoods are of approximately the same size. In this paper we present the first polynomial-time constant-factor approximation algorith
The addition of a carbon nutrient feed to a fed-batch cultivation is often not enough to obtain satisfactory growth and/or production. In some cases, an additional feed with for example supplementary amino acids or complex media is required. This work presents the development of feeding strategies where more than one feed is required and the knowledge of the growth requirements is low. Simulations
The vitamin K-dependent anticoagulant protein S binds with high affinity to C4b-binding protein (C4BP), a regulator of complement. Despite the physiological importance of the complex, we have only a patchy view of the C4BP-binding site in protein S. Based on phage display experiments, protein S residues 447-460 were suggested to form part of the binding site. Several experimental approaches were n
During the last years, the importance of antibacterial peptides has attracted considerable attention. We report here that peptides derived from the fifth domain of beta-2 glycoprotein I (beta(2)GPI), a human heparin binding plasma protein, have antibacterial activities against Gram-positive and Gram-negative bacteria. Streptococcus pyogenes, an important human pathogen that can survive and grow in
In 2018, the Swedish government decided to invest 350 million SEK in welfare technology as a response to the increasing population of the elderly. The aim of this study was to investigate implementation managers’ descriptions of their work and use of welfare technology. The interviews were conducted at three long-term facilities for the elderly in the municipality of Burlöv, Helsingborg, and Hässl
Purpose: The purpose of this thesis is to critically explore how a regulatory, community and organizational stakeholder perceive their role in the context of sustainability reporting as well as identify convergence and divergence between these different stakeholder perceptions. Methodology: We chose a qualitative-abductive approach to our case study of sustainability reporting by interviewing th
This study aims to identify important market characteristics that affect international market establishments in the IT consulting industry. A qualitative case study has been conducted at an IT consulting firm, where Osterwalder's Business Model Canvas has been used as a tool to identify and compare market characteristics to existing theory regarding internationalisation in the Knowledge-Intens
This thesis is a thematic analysis of two major themes in the poetry of Sylvia Plath: Death and rebirth. The idea is to look at selected poems by Plath without taking into account biographical data. The thesis investigates death as perfection, the act of dying and the performative aspect of rebirth. It also takes a closer look at the meaning of the color red and the movement upwards (the ascent) a
In this thesis, I investigate the use of the concept of the poor within Latin American liberation theology, with the aim to construct a common point of orientation for the different contexts of academic liberation theology. Drawing on Clodovis Boff's observation that there is a fundamental dissonance between liberation theologians’ discourse on the poor and the theologians’ conversation with t
