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Femtosecond pulse shaping is a versatile tool that enables the generation of ultrashort laser pulses with nearly arbitrary temporal shapes. Among others, the technique is of use in ultrafast spectroscopy experiments where it can be employed for dispersion control and the generation of well-defined laser pulse sequences. In this work, a Fourier-transform pulse shaper based on a pixelated liquid crys
A multi-pass Raman spectroscopy setup, consisting of a measuring cell built as a cavity, using two concave circular mirrors, has been constructed and optimized. As the light reflects between the mirrors, the Stokes Raman signal is enhanced with every pass through the cavity. The setup is tested by measurements of species in ambient laboratory air, N2 gas flowing through a transparent plastic tube,
Climate change and global warming is driving development toward use of more sustainable production processes such as microbial manufacturing of renewable compounds. Yarrowia lipolytica is a non-conventional, oleaginous yeast that can accumulate high amounts of lipids in response to stress conditions, and is therefore of special interest in the biotechnological industry. The goal with this study wa
Recent developments in the field of optical clocks and quantum information have fueled the necessity for both fiber phase noise cancellation and laser stabilisation. The Quantum Information group at Lund University is conducting research on quantum computation experiments based on rare earth ion doped crystals and also application of slow light effects induced by spectral hole burning in these rar
In this thesis work, a highly linear passive attenuator and mixer were designed to be used in a wide-band Transmission Observation Receiver (TOR). The TOR is a low IF receiver that accepts RF frequencies from 2GHz to 7GHz, and produces corresponding IF bandwidths of 280MHz to 990MHz respectively, using low side LO injection. The dynamic range is maximized by using passive topologies for both the a
Den svenska bostadsmarknaden står idag inför oanade prövningar. En ständig befolkningsökning och höjda priser på bostäder försvårar för vissa segment. Nyproduktionstakten de senaste åren ha inte varit vad som önskats, och flertalet fastighetsbolag har svårt att få ihop sina kalkyler. År 2002 lagstadgades en ny upplåtelseform i Sverige, kooperativ hyresrätt, med förhoppning att kunna få fart på nyp
In this master thesis we investigate the predictive performance of several well-known Value at Risk (VaR) estimation methods, given a specific company setting. The thesis is conducted at a Swedish financial institution that wants to be able to measure foreign exchange (FX) risk induced by cross-currency transactions carried out by the company. The goal of the thesis is to provide empirical evidenc
Embedded systems are hard to debug and the field of control software testing is relatively unexplored. Progress in these areas could provide better testing heuristics and safer systems. More specifically, hardware emulation is a potentially powerful tool that can help improve the speed and quality of the development cycle. Therefore, this study developed a hardware emulator for supporting embedded
Bakgrund: På grund av otillräcklig stöttning och anpassning inom grundskolan når mindre än hälften av barnen med autismspektrumtillstånd (AST) kunskapsmålen. Internationella erfarenheter och studier av arbetsterapeutiska interventioner för att stödja dessa elever visar på positiva effekter avseende aktivitetsutförande och skolresultat. I Sverige är dock användningen av arbetsterapeutiska intervent
The Laser Interferometer Space Antenna (LISA) is a space borne gravitational wave detec- tor set to launch in 2034, with the objective of detecting and studying the Gravitational Waves (GWs) of our universe. So far, ground-based detectors such as the Laser Interferometer Gravitational-Wave Observatory (LIGO) have been successful in detecting GWs, but the limitations of ground based detectors is wh
Intelligent reflective surfaces (IRS) are envisioned to have a significant number of applications in future wireless network systems by reconfiguring the signal propagation to improve system performance. In particular, the IRS's cell elements can independently reflect the incident signal by tuning its phase and achieving passive beamforming to enhance the received signal of the user equipment.
Titel Riskhantering i Byggprojekt – Metoder och tillvägagångsätt för att hantera risker Författare Marc Carlsson & Simon Eriksson Handledare Radhlinah Aulin, Avdelningen för byggproduktion, Lunds universitet Examinator Anne Landin, Avdelningen för byggproduktion, Lunds universitet Syfte & mål Syftet med studien är att undersöka hur byggföretag utför riskhanteringsprocessen och hur de sTitle Risk management in construction projects - methods and approaches to manages risk Authors Marc Carlsson & Simon Eriksson Supervisor Radhlinah Aulin, Department of Construction Production, Lunds University Examinator Anne Landin, Department of Construction Production, Lunds University Aim & goal The purpose of the study is to investigate how companies perform risk management proce
Machine learning as a field has expanded in an explosive manner, with more companies interested in using the technology. One of these companies, Spiideo, uses Machine learning to automatically stream and record sports, highlighting key events - all automatically without a cameraman. However, these cameras have to undergo a lengthy calibration process involving manual feature extraction. This work
In Sweden, prostate cancer is the most common type of cancer among men. The care need within prostate cancer will get higher as the population increases and gets older. With this in mind, there is a need to streamline the care pathway. One way to do this is with a clinical decision support system. Here natural language processing (NLP) plays an important role to handle the big amount of free text
Nedströmsprocesser för rening av biologiska läkemedel som monoklona antikroppar rör sig från batch-processer till kontinuerliga, och vidare till helt automatiska, kontinuerliga nedströmsprocsser. En del av visionen för automatiska reningsprocesser är möjligheten att automatiskt analysera från olika steg av reningen. Orbit är ett program som tillåter advancerad styrning av ÄKTA kromatografisystem fDownstream processes for purification of biological pharmaceuticals such as monoclonal antibodies are moving from batchwise to not only fully continuous, but also fully automated production. A part of the vision for fully automated purification processes is to be able to automatically analyze from sample streams of the purification steps. Orbit is a software that allows for advanced control of ÄKT
Det här examensarbetet utvecklar ett koncept för infästning av fenor på jetboards som inte intränger på befintliga patent. Det resulterande konceptet medför handlingsfrihet (FTO) och följaktligen tillåter produktion av fenor med originell design. FTO innebär möjligheten till att producera och sälja en produkt utan rättsligt ansvar gentemot ägare av patent. Examensarbetet presenterar och diskuterarThis master thesis generates a concept for the means of attaching fins onto jetboards without infringing on existing patents. The resulting concept establishes freedom to operate (FTO) and enables production of fins with original designs. FTO meaning the possibility of producing and selling a product without legal liability to any patent holders. The thesis further presents and discusses user need
Ungdomar har varit föremål för straffrättslig särbehandling i flera sekel. Den nuvarande särbehandlingen föreskrivs i 29 kap. 7 § BrB och medför att om någon begår brott innan hen fyllt 21 år så ska dennes ungdom särskilt beaktas vid straffmätningen. Detta resulterar i en straffnedsättning, s.k. straffrabatt som minskar i förhållande till ökad ålder. Straffrabatten motiveras utifrån ungdomars brisYoung offenders have been specially treated in Swedish criminal law for centuries. Regulations of today are to be found in 29 kap. 7 § BrB and prescribes that anyone who commits a crime before the age of 21 should receive a reduction of their penalty because of their youth. This results in a so-called “penalty discount” that reduces as the age increase. The reasons for the existence of the penalty
Geographic information system multi-criteria decision analysis (GIS-MCDA) procedure can combine criterion maps together and associated the criterion weights to acquire an overall value for each spatial location in the research area. Analytical Hierarchy Process (AHP), Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS), Ordered Weighted averaging (OWA) are three generic algo
Förtillverkade betongkonstruktioner har inte någon naturlig sammanhållning av stommen, som i en platsgjuten konstruktion, vilket medför stora krav på de mekaniska kopplingarna mellan de prefabricerade betongelementen avseende bärförmåga och deformationskapacitet. Dagens mekaniska kopplingar utgörs ofta av ingjutna raka kamstänger och har därför en begränsad deformationskapacitet vilket medför att Precast concrete structures has no natural coherence of the frame as when the structure is cast in situ, which puts great demands on the ties between the prefabricated concrete elements regarding the resistance and deformation capacity. The ties that are used today often consist of straight ribbed bars embedded in concrete and therefore have limited deformation capacity. This means that the opport
