Sökresultat

In this report the characteristics of the electron applicator system for an Elekta SLi Plus linear accelerator have been studied. The investigation will serve as a basis for a new applicator design that will give less radiation leakage. The present applicator system does not fully comply with the recommendations of the International Electrotechnical Commission (IEC) Standards recording radiation l

The literature suggests that executives still doubt the real contribution of HR, and one reason for this is that it is difficult to measure the Return on Investment in HR activities. In addition to this, earlier studies on the value creation of IT seems to discount the intangible value creation that IT investments bring to organizations. The purpose of this thesis is to investigate and compare how

https://www.isk.lu.se/forskning/forskningsprojekt-0/doktorandprojekt/dynamics-crisis-communication - 2026-06-03

This is a master thesis where I investigate if there is an environmental awareness, willingness and commitment in the municipal housing companies to reduce the energy use in the building sector. Furthermore I investigate if the concept passive house or some other type of low - energy houses are used as measures. The government has imposed a state investment. The main purpose of the investment su

Artificial Intelligence has existed for many years and keeps developing. AI has become better at generating new works, for example music, which raises a question of whether AI can potentially infringe on copyright. This thesis examines the legal framework regarding copyright and AI and whether AI used in music can constitute a copyright infringement. The question that is focused on is “To what ext

När en utredare observerar en olycksplats är bevisen de kan hitta viktiga. Bevisen är det som gör att de kan återskapa hur olyckan hände och förstå vad som hände. Men om de inte förstår bevisen, eller använder dom för att återskapa olycksplatsen på fel sätt, kan svaret de får vara fel. Inom partikelfysik kolliderar vi atomkärnor med extrema energier för att se vilka hemligheter universum har. För The purpose of this thesis was to implement an alternative method to calculate the overlap function, which describe to what extent two protons overlap with each other spatially, into PYTHIA8 in order to determine how it affected the average number of multiparton interactions. The new overlap function is based on an explicit impact parameter picture, whereas PYTHIA8s overlap function uses an implic

I denna uppsats härleds och testas en ny omviktningsalgoritm med vars hjälp det nativa tillståndet av aminosyresekvenser, bestående av 16 aminosyror, kan förutspås. Algoritmen används till att kartlägga de neutrala näten av α-helixes och β-sheets inom ett kontinuerligt proteinmodell. För att undersöka omviktningsalgoritmens potential för att förutsäga den termodynamiska stabiliteten av olika aminIn this thesis, a new reweighting algorithm for predicting the native conformations of amino acid sequences, consisting of 16 residues in a reduced representation continuous protein model, is derived and tested to map neutral nets of α-helices and β-sheets. For examining the potential of the reweighting algorithm for predicting the thermodynamic stability of amino acid sequences, it is applied to

Den mänskliga hjärnan är kanske det mest avancerade och komplexa system som vi känner till. Den är kapabel både till att skapa kreativa tankar och idéer och också till att skapa och minnas erfarenheter och lära sig från dem. Vetenskapen har kommit långt i utforskningen av hjärnans struktur, och idéer om hur vi kan ta till oss och använda den kunskapen är många. I hjärnan finns ett nätverk av nervcThe Maxout network is an alternative to artificial neural networks that use fixed activation functions. By adding extra layers of linear nodes the Maxout network is able to learn both the relationship between the hidden nodes and the activation function that they use. The idea was presented as a natural companion to the dropout technique when training large convolutional networks, showing state-of

I samband med att teknologin har utvecklats, har också vår förmåga att observera mindre och mindre objekt utvecklats. Detta är för att partiklar kan accelereras till högre och högre fart och därmed till högre energier. Utforskningen av hadroner, med partikelacceleratorer som Large Hadron Collider (LHC), har givit forskare en djupare förståelse om hur kvantkromodynamik (QCD), en av lärorna om materIn this thesis, the information loss from the modified Mass-Drop tagging of a Z to qqbar jet is studied for a pp collision at LHC centre-of-mass energies in PYTHIA 8 using FastJet 3. The jet created by the Z has minimum transverse momentum of 200 GeV. This is then searched for subjets via two methods: a Cambridge/Aachen algorithm and a modified Mass-Drop Tagger with different z-cut values. The sub

Mörk materia upptäcktes redan på 1930-talet av astronomer via sin enorma gravitationella påverkan på galaxer. Trots detta, har alla försök att hitta dess beståndsdelar via experiment misslyckats. Ledande modeller för den mörka materians natur brukar beskriva den som uppbyggd av så kallade ”WIMP:s” (weakly interacting massive particles) som översätts till ungefär: ”svagt interagerande massiva partiRecently, a number of experiments have been proposed with the aim of finding light dark matter. In particular, the proposed LDMX experiment is meant to utilize electron scattering off metal nuclei to excite dark matter emissions. Motivated by this, we construct an event generator for electrons scattering off metal nuclei. The relevant kinematics are presented in detail. The matrix element for the

Seemingly neglected post-industrial spaces have often become crucial assets for movements seeking to inscribe new commons and public places in the urban fabric. Appropriating abandoned "Brachen" landscape or older factory complexes has allowed movements a foothold to build an urban world that is theirs. However, also movements clearly connected to industrialization, most notably the labor movement

This study is about changes of institutional values in the procedur of public procurement. The results show that there is a change of focus from government values to market values in the policies and recommendations from the Swedish Competition Authority. The method of the study is a text analysis of the material presented on the homepage of the Swedish Competion Authority and also covers analysis