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The energy and mass measurements of jets are crucial tasks for the Large Hadron Collider experiments. This paper presents a new calibration method to simultaneously calibrate these quantities for large-radius jets measured with the ATLAS detector using a deep neural network (DNN). To address the specificities of the calibration problem, special loss functions and training procedures are employed,
The importance of using efficient bases for current expansion in numerical computations of electromagnetic field problems has been emphasized for several decades. It is well known that the basis functions should approximate the physical current (electric or magnetic) to some extent. Moreover, for efficiency, it is reasonably to require that only a few basis functions are needed in order to obtain
We present the fabrication and characterization of single mode waveguides fabricated monolithically in SU-8. SU-8 is a negative resist, which can be structured by UV lithography followed by a baking step to induce cross-linking. As a material platform, SU-8 is well suited for systems used for biochemical analysis, as it possesses very high chemical resistance and good mechanical stability. Here we
Increasing the amount of renewable generation in distribution networks is a fundamental part of the energy transition. Multiple methods exist to increase the hosting capacity in a grid, to allow larger injections of generation and more efficiently utilize existing infrastructure before operational limits are breached. In this thesis, the method studied for this is network reconfiguration. Many dis
Precision measurements of electron reconstruction, identification, and isolation efficiencies and photon identification efficiencies are presented. They use the full Run 2 data sample collected by the ATLAS experiment in pp collisions at a centre-of-mass energy of 13 TeV during the years 2015–2018, corresponding to an integrated luminosity of 139 fb−1. The measured electron identification efficien
Permanent Magnet Synchronous Motor (PMSM) is a main component in electrical aircraft and electric vehicles. Due to its advantages, it is gaining the attention of manufacturers. This machine is highly efficient and reliable. It has a high torque to weight ratio. Due to its criticality in application, we need to detect the faults at the initiation stage. The faults associated with PMSM can be electr
Under hösten år 2017 delade tusentals svenska kvinnor och icke-binära i upprop under #metoo med sig av sina upplevelser av sexuella trakasserier och övergrepp samt ställde krav på förändring. #metoo-rörelsen kom att förändra diskussionen om sexualbrott och frågan kan ställas vad som utgör ett sexuellt ofredande, vilket är den lägsta gränsen för sexualbrott i 6 kap. brottsbalken. När så många deladDuring the autumn of 2017 thousands of Swedish women and non-binary signed petitions under #metoo and shared their experiences of sexual harassment and assault and demanded a change. The #metoo-movement changed the discussion concerning sexual offences and therefore the question can be asked, what constitutes a sexual molestation according to chapter 6 section 10 in the Swedish Penal Code, the lim
If the individual characteristics and background of each learner affect their ability to optimally learn the teacher must be flexible and willing to adapt in order to optimally teach. The aim of this study was to observe and document operationalized differentiated English as a second language teaching in one upper secondary school in the southwest of Sweden. The method used was that of an explanat
The growing influence of private military and security companies (PMSCs) in the international arena has altered the dynamics of security governance, challenging states’ monopoly on the use of force. The industry’s mushroom growth has not been accompanied by requisite regulation at national and international level. The lack of oversight and accountability has resulted in PMSCs, predecessor of merce
This thesis work has has been done at Sensative in Lund and the goal has been to build a prototype of a product which the company then may build further upon. The product aims to combine IoT with social responsibility by preventing drowning accidents with the data that is generated and sent via the product. Based of an initial description of the product provided by Sensative, the work then was div
In this thesis we perform error analysis of a nuclear model based on density-functional theory developed in Lund. The Lund model allows us to perform calculations of nuclear spectra more efficiently by constructing a simple effective Hamiltonian reproducing the quadrupole deformation and pairing interaction strength parameters of a spherical Hartree-Fock reference functional. This constraining of
In pursuit of energy efficiency and sustainable development, goals have been set by the EU and Sweden to improve the energy performance of buildings and reduce their environmental impact. Renovating the existing building stock is a path to achieving the energy and climate goals. This study investigates and analyses various retrofitting options for multifamily residential buildings in Skåne, Sweden
Det svenska vägnätet är uppdelat i allmänna vägar, kommunala gator och enskilda vägar. De allmänna vägarna sköts generellt av staten via Trafikverket. Ansvaret kan emellertid, om regeringen lämnat ett förordnande om det, överlämnas till den berörda kommunen. Förordnandet kan gälla för ett helt område, eller enskilda vägar. Kommunen är väghållare för de kommunala gatorna inom detaljplan med kommunaA municipality in Sweden has two different choices regarding how to plan and build transportational infrastructure such as roads. The most used way is to use the planning and building act and establish a detailed development plan, but the municipality could also establish a road plan according to the road act. This paper examines the connection between the two laws and how those apply on the munic
The automated machining is typically performed by CNC (Computer Numerical Control) machinery due to the high stiffness and accuracy provided by these machines, which are expensive and comparably big. For softer materials, such as aluminum, machining is possible using the less stiff industrial robot arm. This is attractive because the robot arm has a much lower cost than CNC combined with a larger
Migrating cells under various force fields in microfluidic devices has been used as a tool to study the cell properties. Cells respond to the same force field in different ways depending on their properties, resulting in different migration velocities and trajectories which are obtained by cell tracking. The cells that are to be tracked are typically labelled with fluorescent dyes to enhance the c
Title: After-Market Spare Parts Forecasting at Sandvik Stationary Crushing & Screening. Authors: Arian Marofkhani and Artur Jusopov Supervisors: Professor Gudrun Kiesmüller, Lund University, Faculty of Engineering, Division of Production Management. Macarena Ribalta, Planning & Logistics Manager, Sandvik Stationary Crushing & Screening. Examiner: Professor Johan Marklund, Lund Univ
This report covers the development process of finding the best attach method for a plastic cover to a metal chassis of a sensor. Several manufacturers of electronic equipment use screws as a semi-permanent way of attaching a cover to their product. However, this method is not always appreciated as it takes up volume in the product and makes the exterior of the product unattractive. The project has
Purpose: The high failure rate of M&As is still one of the main puzzles. The purpose of this research is to identify how concepts of failures changed after the global financial crisis and to see the main causes of such failures according to the research in the set time frame. Theoretical framework: Motives of M&A failure are categorized into synergy motive and self -managerial motives. Ba
