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This thesis consists of three different essays, all of which have arisen from a practical problem. In the first essay, “Technical efficiency and ownership: The case of booking centers in the Swedish Taxi Market” the purpose is to examine the question of competition on an equal basis between privately and publicly owned booking centers in the Swedish taxi market. One way to answer this question is
A common denominator in most design literature is the goal of improving methods and techniques for the design process, thus contributing to increased efficiency of the design activities. It is a striking fact that the majority of the improvements suggested focus solely on qualitative methods and techniques, thereby neglecting to recognize the improvement potential inherent in quantitative methods
Ett i den politiska debatten centralt område är arbetsrehabilitering. Inom detta område går det att se en ökad politisk aktivitet som många gånger mynnar ut i begreppet "samverkan". Ropet på samverkan beror möjligen på att det blir allt svårare för enskilda myndigheter att såväl överblicka som hantera sitt verksamhetsfält i takt med att omvärlden ter sig allt mer komplex. Föreliggande rapport byg
The production of ethyl esters (EE) from ethanol and cod-liver oil by an immobilised lipase in supercritical carbon dioxide (SCCO2) is described. This reaction results in a complex mixture of lipid components consisting of triglycerides, diglycerides, monoglycerides and ethyl esters. The primary goal has been to carry out enzymatic reaction and product separation simultaneously, by selectively ext
Context: Value stream mapping (VSM) as a tool for lean development has led to significant improvements in different industries. In a few studies, it has been successfully applied in a software engineering context. However, some shortcomings have been observed in particular failing to capture the dynamic nature of the software process to evaluate improvements i.e. such improvements and target value
The ripeness of fruits is commonly assessed by the visual appearance, but this method is not very accurate and there can be a large variability. We have developed a hand-held sensor based on laser-induced fluorescence to provide more objective guidance. The instrument incorporates a 412 nm continuous wave semiconductor laser and a miniature spectrometer. It was used for monitoring of tropical frui
X-ray ptychography is often implemented for nanoimaging at synchrotron radiation sources and extensions are being developed to make experiments faster. This work is on multi-beam ptychography with Fresnel zone plates that have a small lateral separation, enabling the imaging of an extended field of view without increasing exposure time. Sectional zone inversion is implemented for coding respective
Surgical site infections (SSI) are a clinical and economic burden. Suture-associated SSI may develop when bacteria colonize the suture surface and form biofilms that are resistant to antibiotics. Thrombin-derived C-terminal peptide (TCP)-25 is a host defense peptide with a unique dual mode of action that can target both bacteria and the excessive inflammation induced by bacterial products. The pep
BACKGROUND. The reported prevalence of serious bacterial infections (SBI: urinary tract infection (UTI), bacteremia, and meningitis) among febrile infants ≤60 days of age varies from 8% to 23%. There are indications that the prevalence of infections differs between the sexes. Infants with fever at home but afebrile at the pediatric emergency department (PED) might have a lower risk of SBIs. Furthe
Vad består materia av? Det är en fundamental fråga som mänskligheten försökt besvara i tusentals år. Vårt svar på den frågan har utvecklats enormt de senaste 200 åren. Atomer, från grekiskans ord för odelbar, bygger upp materian vi ser omkring oss. Det antogs längeatt atomer verkligen var odelbara, men strax innan sekelskiftet år 1900, kom experimentellt bevis från J. J. Thomson, som påvisade att The papers in this thesis all concern the treatment of colors in perturbative QCD, both in the context of hard scattering cross sections and for parton showers. The complexity of the color structure of QCD increases quickly with the number of external partons. One way of tackling this issue is by using an orthogonal, group theory based, type of bases, called multiplet bases. This is the topic of p
To meet complex needs in persons and families within specialist palliative care, care team members are expected to work together in performing a comprehensive assessment of patient needs. Team type (how integrated team members work) and team maturity (group development) have been identified as components in team effectiveness and productivity. The aim of the study reported in this paper was to ide
Bloggpost på nutritionsfakta.se.EAT-Lancetkommissionen lanserade 2019 sin ”the great food transformation”, en modell för hälsosamma matvanor för en växande global befolkning som skulle hålla livsmedelssystemet inom planetens gränser.En uppföljande svensk studie har tagit fram ett eget index för att mäta följsamheten till EAT-Lancetkosten, med en poängsättning som gör det möjligt att se hur väl en
I projektet MDSEG (Myndighetsdriven Datadelning och Samverkan för EffektivareGodstransporter) strävar vi efter att främja ökad effektivitet inom lokal och regionalgodstransport genom datadelning och samarbete mellan olika aktörer. Vårtövergripande mål är att bidra till optimering av rutter för transporter och samordningav logistiken för att minska klimatpåverkan och öka effektiviteten. Vi har geno
We investigate mean-field games from the point of view of a large number of indistinguishable players, which eventually converges to infinity. The players are weakly coupled via their empirical measure. The dynamics of the states of the individual players is governed by a non-autonomous pure jump type semi group in a Euclidean space, which is not necessarily smoothing. Investigations are conducted
Irradiation-induced phase segregation in mixed methylammonium halide perovskite samples such as methylammonium lead bromide-iodide, MAPb(IxBr1-x)3, is being studied intensively because it limits the efficiency of wide band gap perovskite solar cells. It has been postulated that this phenomenon depends on the intrinsic ionic (in)homogeneity in samples already induced during film formation. A deeper
In this study, a coupled transient thermomechanical finite element model is developed to examine the laser powder bed fusion (L-PBF) process of the Inconel 718 (IN718) and Oxide Dispersion Strengthened (ODS) superalloys (ODS-IN718). The linear isotropic elastic perfectly plastic constitutive model is implemented for the mechanical part whereas all the thermophysical properties are defined as fully
Predictions of total dissolved solids (TDS) in water bodies including rivers and lakes are challenging but essential for the effective management of water resources in agricultural and drinking water sectors. This study developed a hybrid model combining Grey Wolf Optimization (GWO) and Kernel Extreme Learning Machine (KELM) called GWO-KELM to model TDS in water bodies. Time series data for TDS an
Background: The debate over legalizing medical assistance in dying (assisted dying) is ongoing, also in Nordic countries such as Sweden where assisted dying is illegal. A 2020 survey by the Swedish Medical Association highlighted varied perspectives, with 41% of physicians supporting and 34% opposing legalization. Professionals in palliative care were more negative toward it. Objective: To ass
Dyspnea is a common and highly distressing symptom in patients with advanced illnesses. Many patients continue to experience chronic dyspnea despite optimal management of underlying disease(s) and various non-pharmacologic interventions, necessitating the consideration of pharmacologic therapies for palliation of dyspnea. One commonly asked question by clinicians is whether benzodiazepines have a
