Filetype
Hydropower in Brazil stands for 64.5% of all energy sources in the country. The largest number of hydropower plants are located in the Paraná basin, which together have an installed capacity of approximately 40 GW including the world’s largest producing hydropower plant, Itaipu. The wet season during Brazilian summer (January-March) is the most important for hydropower. Occasionally, extreme, su
In digital control systems, the state is sampled at given sampling instants and the input is kept constant between two consecutive instants. With the optimal sampling problem, we mean the selection of sampling instants and control inputs, such that a given function of the state and input is minimized. In this paper, we formulate the optimal sampling problem and we derive a necessary condition of t
In this thesis I extend the chirality-flow method to the full standard model at tree-level by including massive particles and electroweak interactions. The chirality-flow method is a new diagrammatic method for calculating Feynman diagrams that is based on the spinor-helicity formalism, that before this thesis was written had been worked out for massless QED and QCD at tree-level. I summarize what
To control an accelerating proton beam that travels close to the speed of light, a large number of beam diagnostic instruments are needed. One of the instruments that will be used at the accelerator of the European Spallation Source is a Non-invasive Profile Monitor (NPM). Once installed, this system will measure the transverse beam profile by imaging the fluorescent gas induced by the accelerated
Cow horn has been a craftig material in Europe for 1000s of years. Yet, in the last 100 years the material has disappeard from our pool of commonly used materials. Today it is mostly used for dogfood and gelatine. I believe that horn could again become a commonly used crafting material, especially for modern and sustainable products. Among my many visions for horn, I see it as a beautiful, natu
Background TitanX Engine Cooling is a global supplier of powertrain cooling solutions to commercial vehicles, both for OEMs and the independent aftermarket. The company with annual sales of over 1.6 billion SEK (US$ 192 million) has some 800 employees worldwide. TitanX is headquartered in Gothenburg, Sweden and has manufacturing sites in Sweden, USA, Brazil, China and Mexico. Its manufacturing fac
Background TitanX Engine Cooling is a global supplier of powertrain cooling solutions to commercial vehicles, both for OEMs and the independent aftermarket. The company with annual sales of over 1.6 billion SEK (US$ 192 million) has some 800 employees worldwide. TitanX is headquartered in Gothenburg, Sweden and has manufacturing sites in Sweden, USA, Brazil, China and Mexico. Its manufacturing fac
Society faces multiple and interconnected crises that require transformation. Education has long been theorized as key to transformation, yet an important driver of transformation, imagination, is marginalised within pedagogical approaches to sustainability. This thesis examines Beyond the Fossil Era (BFE), a pedagogy that invites learners to become co-creators of a speculative museum looking back
The chirality-flow formalism has been proven to simplify the calculation of helicity amplitudes, both analytically and in a first numerical implementation developed as an extension of MadGraph5_aMC@NLO. Expanding on this work, two new implementations have been developed. The first provides an alternative algorithm for the evaluation of diagrams, where helicity amplitudes are obtained by combining
The EU procured for roughly 202000 MEUR (14% of the EU GDP) during 2021 in the public sector. The majority of these contracts are traditional, linear business model purchases. The EU has been developing several strategies, guidelines, and policies for sustainable purchasing, with Circular Public Procurement for a Circular Economy (CE) being one of them, but the implementation rate is low. Electron
The growing importance of organisations becoming more sustainable has reached a crucial point. To aid the journey of becoming more sustainable information systems and specifically business intelligence is an appropriate solution to help manage and measure sustainable development. However previous research suggests the use of business intelligence in the context of sustainability is not as prevalen
Palmers Green is a faltering neighbourhood; a place that continually settles on temporary fixes, such as shop changes that suit only select groups, coupled with an absence of communal facilities or activities. The result is a lack of overarching sense of community - perhaps a natural manifestation of the co-presence of multiple diverse cultures. But does it have to be this way? A more engaged comm
Finding vulnerabilities in open source software is an important part of software security. Software security is in turn a vital part in risk management and making risk assessments. The purpose of this thesis is to help organisations make decisions about vulnerabilities they have in their software programs by helping them make their own risk assessment. Our research uses the Common Vulnerability Sc
The increased use of plastics has become an environmental problem where plastics, due to the slow degradation, accumulate in the oceans and landfills. Although plastics are a very cheap and useful material with desirable properties and a wide variety of applications, they are primarily made from petroleum-based resources which are non-renewable and of fossil origin. An alternative to these non-ren
The Internet of Things is coming. With it comes security challenges not present on common, more capable, devices such as desktop computers or servers. We argue that traditional channel security needs to be complemented with object security to cope with the constrained nature of small devices and Low Power Lossy Networks. The main reason for a partial transition to object security being heavy use o
We derive a fundamental existence theorem for the equation u(t)'(x,t) - div(vertical bar del(x)u vertical bar(p-2)del(x)u) = 0 with continuous initial and boundary data in a space-tithe cylinder.
