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Tidigare studier har dokumenterat ett flertal fossila meteoriter samt höga koncentrationer av utomjordisk kromit (ett järn-kromoxidmineral) i cirka 467 miljoner år gamla, mellanordoviciska sedimentlager. Fynden antas vara resultaten av ett tillfälligt förhöjt inflöde av meteoritiskt material, efter uppbrytningen av en kropp i asteroidbältet – de så kallade L-kondriternas föräldrakropp – för omkriNumerous fossil meteorites and high concentrations of sediment-dispersed extraterrestrial chromite (EC) grains with typical ordinary chondritic composition have previously been documented from 467±1.6 Ma Ma lower Kundan (Middle Ordovician) strata. These finds most likely reflect a temporarily enhanced influx of ordinary chon- dritic matter, following the disruption of the L chondrite parent body i

Artificiella Neurala Nätverk (ANN) är en form av maskininlärning som är populär just nu. Den har många användningsområden inom dagens teknik, till exempel som bildigenkänning. Att programmera ett sådant nätverk är dock inte det lättaste man kan göra. Ett vanligt problem som uppstår när ett ANN byggs upp är överträning, vilket sker när nätverket är för kraftfullt för problemet det ska lösa. En vanlL2 regularization is a common method used to prevent overtraining in artificial neural networks. However, an issue with this method is that the regularization strength has to be properly adjusted for it to work as intended. This value is usually found by trial and error which can take some time, especially for larger networks. This process could be alleviated if there was a mathematical relationsh

När syndafloden kommer När havsnivån stiger och nederbörden ökar riskerar upp till 29 utav Lunds stifts ca 500 kyrkobyggnader att drabbas av översvämningar. Detta betyder att behovet av skydd mot översvämningar troligtvis kommer öka för dessa miljöer i framtiden. Förekomsten av översvämningar förväntas öka till följd av klimatförändringen. Utav de ca 500 kyrkobyggnaderna i Lunds stift kan upp tThe occurrence of floods is expected to increase due to climate change, which may lead to destruction or loss of value of cultural heritage sites. There are approximately 500 church buildings in Lund diocese. The aim of this study was to investigate how this might affect the church buildings, their inventory, and cemeteries within Lund diocese, which are protected under Swedish law. The aim was al

This report presents how far NCC current VDC tools and methods in building construction can be implemented in road and infrastructure projects also what new tools, methods that can be created helped by pre-selected software’s. VDC is well developed within the construction of building and research and resources in the field have been spent under a longer period of time unlike in road and infrastruc

Objectives: To develop evidence based recommendations for the management of hand osteoarthritis (OA). Methods: The multidisciplinary guideline development group comprised 16 rheumatologists, one physiatrist, one orthopaedic surgeon, two allied health professionals, and one evidence based medicine expert, representing 15 different European countries. Each participant contributed up to 10 propositio

What is the relation between scientific explanation and understanding? The thesis investigates a notion of understanding that is believed to be central to scientific explanation. The role of understanding in explanation is double: it is both an essential component, as well as a criterion, by which we select bona fide explanations from non-explanations. The model of explanation that is outlined in

There are few studies on how social workers deal with cases regarding transnational surrogacy. Our study intends to contribute to filling this gap. In Sweden, surrogacy as an assisted reproductive technology method is not permitted. As a result, many prospective parents have turned abroad, mainly to India, for surrogacy. There are no laws regulating surrogacy in Sweden, and difficulties have arise

Rationale and Objectives: To compare the ability of normalized versus non-normalized metabolite ratios to differentiate recurrent brain tumor from radiation injury using magnetic resonance spectroscopy (MRS) in previously treated patients. Materials and Methods: Twenty-five patients with previous diagnosis of primary intracranial neoplasm confirmed with biopsy/resection, previously treated with ra

Popular Abstract in Swedish En populärvetenskaplig sammanfattning Det faktum att vårt minne förändra's med åldern är ett välkänt och väldokumenterat fenomen. Vilka faktorer som bidrar till denna förändring och hur de samverkar för att påverka vårt minne är däremot till stora delar forfarande ett mysterium. Minnesforskare delar vanligtvi's upp vårt minne i flera olika minnessystem. Dessa dela's upThe aim of this thesis was to examine the importance of environmental, non-cognitive, and person-based variables for memory performance in old adults. Study I was conducted in cooperation with the Gerontology Research Centre and the Department of Psychology in Lund. The investigation included 69 people with an age-range from 55-94 years and examined if certain personality factors could explain th

Atmospheric inversions have been used for the past two decades to derive large-scale constraints on the sources and sinks of CO2 into the atmosphere. The development of dense in situ surface observation networks, such as ICOS in Europe, enables in theory inversions at a resolution close to the country scale in Europe. This has led to the development of many regional inversion systems capable of as

Matrisfunktioner och deras applikationer spelar en viktig roll inom olika vetenskaps- och teknikområden. Matrisexponentialen är en av de viktigaste och mest använda funktionerna av matriser. Beräkningen av exponentialen av en matris är ett intressant ämne som har studerats mycket genom åren. Det finns flera sätt att beräkna matrisexponentialen men det är en utmaning att hitta vilken metod som är bMatrix functions and their applications play an important role in different fields of science and engineering. The matrix exponential is one of the most important and extensively used function of matrices. The computation of the exponential of a matrix is an interesting topic that has been extensively studied over the years. There are several ways computing the matrix exponential but there is a pu

Studier av palaeostormfloder ger bakgrund till inom vilka intevall stormar av olika storlek förväntas återkomma och träffa olika områden. Denna information kan användas vid modellering, riskbedömning och stadsplanering. Genom att använda de marina ekvationerna av Nittrouer och Sternberg (1981; The formation of sedimentary strata in an allochthonous shelf environment: the Washington continental sheStudies of palaeostorm surges provides background into at what frequencies storms of different magnitudes are expected to return and hit different areas. This information can be used when modelling, doing risk assesments and city planing. Using the marine equations of Nittrouer and Sternberg (1981; The formation of sedimentary strata in an allochthonous shelf environment: the Washington continenta

1 Gastrointestinal infections modulate the risk for insulin autoantibodies as the first-appearing autoantibody in the TEDDY Study Short Running Title: GI infections modulate autoantibody-risk Maria Lönnrot MD PhD1, Kristian F. Lynch PhD2, Marian Rewers MD PhD3, Åke Lernmark PhD4 Kendra Vehik PhD2, Beena Akolkar PhD5, William Hagopian MD PhD6, Jeffrey Krischer PhD2, Rickhard A. McIndoe PhD7, Jorma

https://www.teddy.lu.se/sites/teddy.lu.se/files/2023-12/155_MP22b_Lonnrot_Diab%20Care_2023_Accepted%20version.pdf - 2026-06-06