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Topology Optimization (TO) of static structures with fixed loading is a very interesting topic in structural mechanics that has found many applications in industrial design tasks. The extension of the theory to dynamic loading for designing a Multibody System (MBS) with bodies which are lighter and stronger can be of high interest. The objective of this thesis work is to investigate one of the pos
Syftet med denna studie är att undersöka hur samhällsnormer och utbildningsinstitutioner kan påverka unga tjejer som spelar gitarr och att förstå varför så få av dem väljer att satsa på att bli gitarrister på högre nivå. Vi har genomfört kvalitativa intervjuer med gitarrlärare, musiker och ungdomar där vi har lyft fram ämnen som förebilder, normer, stereotyper, skola och andra pedagogiska organisaThe purpose of this study is to investigate how social norms and educational institutions can influence young girls playing the guitar and understand why so few of them choose to aim to become guitarists at a higher level. We conducted qualitative interviews with guitar teachers, musicians and adolescents where we have raised different topics as role models, norms, stereotypes, school and other ed
I Sverige finns det idag mellan 400 000 – 500 000 geoenergianläggningar och det uppskattas att nettotillskottet energi från geoenergianläggningar är ungefär 18 – 20 TWh per år. Geoenergianläggningar använder markens översta 300 – 500 metrar för att utvinna värme eller kyla. Vid anläggning av geoenergisystem kan man använda olika borrtekniker, mer eller mindre lämpliga beroende på olika geologiska There are about 400 000 – 500 000 shallow geothermal energy systems in Sweden and every year the net additions of energy from geothermal energy systems are about 18 – 20 TWh. Usually it is the upper 300 – 500 meters of the ground that are used for extracting heat or cold from cored strata. When constructing a shallow geothermal energy system, there are different drilling techniques available for u
Our purpose was to study different actors opinion about what reasons there are to homelessness among young abusers in Malmö. When we are talking about young abusers we mean those who are under 25 years old. Our central questions were: Which reasons could different actors see? Were the actor’s view of the reasons the same or were there any difference? How was the cooperation between the different a
Några utav de vanligaste orsakerna till att en brand uppkom mellan 2010 och 2020 var ”bränder som medvetet startades” samt ”bränder som startats av gnistor vid tågbromsning”. Av den totala mängden bränder som uppkom stod tågbromsning för cirka 1.1 % av dem och den anledning som stod för absolut störst andel bränder var ”bränder startade utav okänd anledning” vilket stod för 43%. Klimatförändringa
Shopping for groceries often means that, as consumers, we travel to the grocery store ourselves, by ear, bike or on foot. At the store we pick out the groceries that we want, go the register and pay for them. During the last couple of years consumers in Sweden have been given the opportunity to let someone else select and transport the groceries to their home instead, so called home shopping. As t
The radome, a portmanteau of the words radar and dome, is a protective dielectric cover to protect a radar from its surrounding environment. The surrounding environment can be rain, wind, sand, dust and whatever else that might harm the radar. Radomes come in many different shapes, materials and thicknesses, where each of these parameters are decided based on the need for the given radar applicati
In this paper regularization of the correlation matrix between futures contracts is examined. With starting point in the recently established HPCA framework (Avellaneda, 2019), a couple of different extensions to the one-factor model is suggested. Extensions are made in terms of adjusting the model according to different cluster structures. The data consists of futures contracts on a wide variety
In this study I intend to examine how textile companies address water in its operations. This is of particular interest due to the fact that water is used in huge amounts in the manufacturing process, when growing fibres for the cloth, when dyeing and washing it and in other related processes, and therefore especially important to address because of the increasing water crises all over the world –
One of the overall main purposes for a structural engineer is to design structures and structural elements so that they meet society’s safety requirements, yet use as little material as possible. In order to do so, the designer has to understand and simplify a complex reality. The strut-and-tie method is such a simplification model which allows engineers to design reinforced concrete structures wh
I den svenska skadeståndsrätten finns endast en begränsad möjlighet till ersättning då en individ drabbats av en ideell skada. Med Europakonventionen och dess ökade inflytande i rättstillämpningen har dock denna möjlighet utvidgats, med förutsättning att en kränkning av en rättighet i konventionen har kunna konstaterats. Efter inkorporeringen av konventionen i svensk lag blev det ännu tydligare atIn Swedish tort law there is a very limited right to non-pecuniary damages if an individual has suffered moral injury. However, the right to compensation has expanded with the European Conventions on Human Rights and its influence over the application of law in the Swedish courts. This of course granted a violation of a provision in the Convention has been confirmed. After the incorporation of the
For a long time, laboratory work has been an important part of science teaching. Curricular objectives of laboratory work have remained mostly unchanged for over a century but have changed somewhat over the past sixty years as a result of political decisions and educational trends. Technology development is reflected in the increased use of digital equipment, which has also led to continuously cha
Down feathers are the first feather types that appear in both the phylogenetic and the ontogenetic history of birds. Although it is widely acknowledged that the primary function of downy elements is insulation, little is known about the interspecific variability in the structural morphology of these feathers, and the environmental factors that have influenced their evolution. Here, we collected sa
Objective To evaluate the effect of midlife lipid levels on Alzheimer brain pathology 20 years later in cognitively normal elderly individuals.Methods This is a longitudinal cohort study of 318 cognitively normal individuals with data on fasting lipid levels at midlife (mean age 54 years). Presence of β-amyloid (Aβ) and tau pathologies 20 years later (mean age 73 years) were detected by quantifyin
The current presence of three species of seals along the Baltic coast; the grey seal (Halichoerus grupys), the harbor seal (Phoca vitulina) and the ringed seal (Pusa hispida) is a result of successful conservation management. However, seals cause severe economic losses to small-scale fisheries and are considered to threaten traditional fishing communities and thereby cultural values, tourism, and
Repeated administration of monoclonal antibodies (mAb) directed against the CD4 lymphocyte receptor may induce specific, long-lasting unresponsiveness to fully MHC-mismatched cardiac allografts in rats without additional immunosuppression. We assessed the effect of a single dose of murine anti-rat depleting anti-CD4 mAb (OX-38) on allograft survival in high- and low-responder rat strain combinatio
Purpose - Distribution arrangements are becoming increasingly complex and dynamic in business as well as in consumer markets. The purpose of the present paper is to explore and discuss the theoretical frameworks available to interpret these distribution arrangements, to uncover how they are interrelated and to suggest extensions. Design/methodology/approach - A survey of extant research is underta
