The treatment of the stochastic linear quadratic optimal control problem with finite time horizon requires the solution of stochastic differential Riccati equations. We propose efficient numerical methods, which exploit the particular structure and can be applied for large-scale systems. They are based on numerical methods for ordinary differential equations such as Rosenbrock methods, backward di

We consider high-order splitting schemes for large-scale differential Riccati equations. Such equations arise in many different areas and are especially important within the field of optimal control. In the large-scale case, it is critical to employ structural properties of the matrix-valued solution, or the computational cost and storage requirements become infeasible. Our main contribution is th

We consider approximations to the solutions of differential Riccati equations in the context of linear quadratic regulator problems, where the state equation is governed by a multiscale operator. Similarly to elliptic and parabolic problems, standard finite element discretizations perform poorly in this setting unless the grid resolves the fine-scale features of the problem. This results in unfeas

Alternative jet fuels can be radically different from conventional fuels in composition, and the consequences of these differences are a subject of ongoing research. Numerical combustion simulations are vital to this research, and require chemical reaction mechanisms that accurately capture the chemical pathways of combustion. For turbulent combustion, these mechanisms must also be compact and eff

Diabetes is a highly ageing-related disease manifesting with a deteriorated capacity of insulin secretion and uncontrolled blood glucose-raising, hyperglycemia. In this thesis, we aim to explore the underlying roles of CaV channels and aging-associated genetic changes in the development of Type 2 diabetes (T2D).In pancreatic β-cells, the active of voltage-gated calcium (CaV) channels play an essen

OPINION He refuses to enter into the collective wage agreements that define the West’s most corporatist economy.

To what extent can we identify sites where metallurgy has been conducted by studying the ceramic residue found at the site? Ceramic tools used for metal casting, such as crucibles, claymoulds and tuyères- so called ‘technical ceramics' - are often used as indicators of metalcrafts.Their often vitrified and sintered appearance is, on many occasions, used as traits of identification.This article discu

English teachers in Swedish upper secondary school often focus on Standard British and American English, although they agree with the syllabus that different varieties of English should be included in teaching. This study aimed to investigate to what extent English teachers include different varieties of English in the classroom. Previous work has failed to provide a comprehensive overview of the

The paper is about how society effects art when society goes through different social processes. The study is limited to the period referred to as the Vasa era and to paintings. What is meant with Vasa era is the 16th century. During that period, society goes through a social centralization in Europe and the question arises if this is, or becomes, noticeable in the art. This is another angle on so

This paper analyses the pivotal gothic novel Frankenstein by Mary Shelley through a close queer reading, focusing on excerpts featuring the artificially created creature and their maker, Victor Frankenstein. The queer perspective is applied to the gender identity and expression of the creature, which is a reading that lends itself to the teaching of the novel to Swedish upper-secondary students be

Research about grammar teaching practices in Sweden has shown that grammar is something which many teachers value. To further facilitate the development of different teaching practices the present thesis hopes to provide teachers with a reference point for how different teaching practices are constructed. The specific aim of the thesis is to discover how grammar teaching practices are influenced b

The aim of this study is to investigate how John Marsden’s Tomorrow, when the war began (1993) could be used for reading-between-the-lines practice in the English language classroom. It answers questions relating to how reading between the lines can be understood in relation to Grice’s cooperative principle, the effects of implicature in the text and how teachers can use this information to facili

We analyse conservatism and regret of stochastic model predictive control (SMPC) when using moment-based ambiguity sets for modeling unknown uncertainties. To quantify the conservatism, we compare the deterministic constraint tightening while taking a distributionally robust approach against the optimal tightening when the exact distributions of the stochastic uncertainties are known. Furthermore,

In this article some initial results from the projects "Bronsildems deglar" (en. "Bronze Age melting crucibles") and "Deglarna frin Bokenäs" (en. "The crucibles from Bokenäs") are presented. The aim of the projects is to expand our knowledge of the production, use and discard of technical ceramics in south Sweden using laboratory analysis. This article describes the results and conclusions made byIn this article some initial results from the projects "Bronsildems deglar" (en. "Bronze Age melting crucibles") and "Deglarna frin Bokenäs" (en. "The crucibles from Bokenäs") are presented. The aim of the projects is to expand our knowledge of the production, use and discard of technical ceramics in south Sweden using laboratory analysis. This article describes the results and conclusions made by

Patients with Wilms tumor (WT) in general have excellent survival, but the prognosis of patients belonging to the subgroup of WT with diffuse anaplasia (DA) is poor due to frequent resistance to chemotherapy. We hypothesized that DA WT cells might undergo changes, such as acquiring a persistent tolerance to DNA damage and copy number aberrations (CNAs), which could eventually lead to their resista

Background: Tuberculosis (TB) disease has been associated with pregnancy complications. However, the potential impact of TB infection (TBI) on pregnancy outcome is unknown. To investigate this, we conducted a register-based study in immigrant women screened with QuantiFERON assays for TBI in antenatal care in Sweden. Methods: Women with history of immigration from TB-endemic countries were eligibl

This paper focuses on Bronze Age melting crucibles in southern Scandinavia. The shape and purpose of the crucibles have long been known, but the process of making one has not been studied thoroughly. The crucibles have in some cases been reconstructed in order to replicate the casting process or the finished product, but have rarely been the main subject of research. In this paper crucibles found

Eutrophication and brownification are ongoing environmental problems affecting aquatic ecosystems. Due to anthropogenic changes, increasing amounts of organic and inorganic compounds are entering aquatic systems from surrounding catchment areas, increasing both nutrients, total organic carbon (TOC), and water color with societal, as well as ecological consequences. Several studies have focused on

Background: In Sweden, information on seroprevalence of tick-borne encephalitis virus (TBEV) in the population, including vaccination coverage and infection, is scattered. This is largely due to the absence of a national tick-borne encephalitis (TBE) vaccination registry, scarcity of previous serological studies and use of serological methods not distinguishing between antibodies induced by vaccin

Efficient scheduling is vital for railway maintenance, which is increasingly challenged by rising train traffic and infrastructure wear. Trackwork often necessitates the reduction of train speeds and the partial or complete closure of tracks. Despite advancements in maintenance technology, the efficiency of planning processes, especially the repetitive tasks of planners and the adaptation to unfor