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We identify, through a change of variables, solution operators for evolution equations with generators given by certain simple first-order differential operators acting on Fock spaces. This analysis applies, through unitary equivalence, to a broad class of supersymmetric quadratic multiplication-differentiation operators acting on L2.Rn/ which includes the elliptic and weakly elliptic quadratic op
Biohythane is a hydrogen-methane blend with hydrogen concentration between 10 and 30% v/v. It can be produced from different organic substrates by two sequential anaerobic stages: a dark fermentation step followed by a second an anaerobic digestion step, for hydrogen and methane production, respectively. The advantages of this blend compared to either hydrogen or methane, as separate biofuels, are
Over the last decades, the Western world has seen millions of relatively well-paid manufacturing jobs disappear. Some have shifted to low-income countries, while other have been permanently lost due the introduction of labor-saving technologies. Concurrently, many comparatively low-wage jobs have been created in services, for example in fast food and retailing. This paper uses a dynamic panel of 2
Drawing on contemporary publications in German and Swedish/Scandinavian journals and biographies as well as conference proceedings of the German Society of Urology (DGU), this paper examines the Swedish impressions of the 1929 DGU meeting in Munich. It focusses on why the Swedish delegates visited the congress and how they evaluated their congress experiences for their Scandinavian peers. Finally,
In 2007 Finland changed ownership rights to inventions from its employees - "the professor's privilege" - to universities. We investigate how this change affected academic patenting using new data on inventors and patenting in Finland for the period 1995-2010. Matched sample panel data regressions using difference-in-differences show that patenting by individuals dropped by at least 29 percent aft
This communication proposes to use the 1-λ resonant mode of slot radiator with single feeding for bandwidth enhancement. The impedance of a simple slot radiator is studied using computer simulation. Since operating the slot radiator in the 1-λ resonant mode requires a longer slot length, a large square slot is used at both ends of the slot to reduce the required slot length. The results of the stu
I rapporten från SNS Konjunkturråd 2018 analyserar och diskuterar tre nationalekonomer kapitalbeskattningens förutsättningar i Sverige. Författarna finner brister i kapitalinkomsternas beskattning och föreslår en enhetligare beskattning. De förespråkar också en löpande fastighetsskatt för både småhus och bostadsrätter men lägre skatt på omsättning av fastigheter. Rapporten pekar också på att en sk
Background: Soft-tissue sarcomas (STSs) are a group of rare, heterogeneous, and aggressive tumors, with high metastatic risk and relatively few efficient systemic therapies. We hypothesized that the Genomic Grade Index (GGI), a 108-gene signature previously developed in early-stage breast cancer, might improve the prognostic assessment of patients with early-stage STS. Patients and methods: We col
Background: Steroid nasal irrigation for chronic rhinosinusitis patients following endoscopic sinus surgery reduces symptom recurrence. There are minimal safety data to recommend this treatment. This study evaluated the safety of betamethasone nasal irrigation by measuring its impact on endogenous cortisol levels. Methods: Participants performed daily betamethasone nasal irrigation for six weeks.
One of the most widely used tools for assessing and communicating scienti c uncertainty is Grading of Recommendations Assessment, Development, and Evaluation (GRADE), a system for rating the quality of evidence and grading strength of recommendations in healthcare. More than 100 organisations around the world—WHO included1— are using GRADE or have endorsed it.In GRADE, a quantitative assessment of
Among adults, acute myeloid leukemia (AML) is the second most frequent type of leukemia. In spite of recent improvements in the treatment of this disease, a majority of patients develop drug resistance, leading to poor overall survival. One of the factors behind this is mutations in the tyrosine kinase receptor (FLT3). It is one of the most commonly mutated genes and is present in almost 40% of th
The impedance matching concept is employed in this paper to select the optimum gain of a VSC-HVDC damping controller. The damping controller of the DC link is based on control of active power in proportion to the difference in local frequency at the VSC-HVDC converter stations. To explain impedance matching, the small-disturbance electro-mechanical dynamics of a power system is transformed to an e
Den 14 januari började det nya året enligt den rysk-ortodoxa julianska kalendern. Vad kan man då anta att år 2013 kommer innebära för Ryssland och ryssarna? Spekulerande är en vansklig syssla, men jag ska ändå försöka skissa ett tänkbart scenario. Texten nedan är alltså en personlig reflektion över de tendenser man kan se i Ryssland just nu, och vad dessa skulle kunna innebära för utvecklingen und
Public sector organisations and voluntary sector organisations represent different organisational archetypes. All the same, they share two fundamental characteristics. However, in practice interaction seems to be coupled with several problems but the organisations favour interaction as a way of attaining mutual benefits. The aim of this paper is to introduce some hypotheses on factors that influen
This paper highlights recent development of fuel cell hybrid vehicle (FCHV) models using the Fuel Cell Library (FCL), the Vehicle Dynamics Library (VDL), and Electrification Library (EL) from Modelon. A flexible model architecture is implemented to support physical modeling of such large scale, multi-domain vehicle system. The top-level model consists of a hydrogen fuel cell subsystem with detaile
