Filetype
A digital filter for intermediate frequency filtering in mobile communication systems is presented. The purpose of the work is to show an alternative to the analog filters which are used in most of today's heterodyne receivers. Bit-serial arithmetic is applied on a twelfth-order wave digital lattice filter algorithm. The paper also shows a method for retiming such algorithms. The power consumption
Amelogenin is a protein which has been found to have many interesting properties. Its biological function is a key part in organizing the crystals of the enamel and it has been found to have a clinical use for periodontal regeneration. Its self-assembling properties also makes amelogenin a suitable material for the fabrication of biomaterials. The aim of this project is to investigate the possibil
This thesis explores the state-of-the-art methods for the optimization of Wireless Power Transfer (WPT) for Radio Frequency (RF) energy harvesting with a view of increasing the efficiency of the Radio Frequency to Direct Current (RF-to-DC) conversion, which is a key parameter in the creation of Zero Energy Devices (ZEDs) in the context of Internet of Things (IoT). The research focuses on waveform
Some of the shortcomings of the Standard Model of particle physics are the 'unnatural' value of the mass of the Higgs boson and the fact that the model cannot account for the process of baryogenesis - a mechanism which generates the observed asymmetry between matter and anti-matter in the Universe. The former is related to the fundamental scalar nature of the Higgs boson, connected to quad
This study presents the case for taking an ontological approach to metadata analysis as a means of facilitating enhanced interoperability across spatial and non-spatial datasets in GIS. A detailed literature review was undertaken in order to understand metadata definitions, concepts and usage, particularly as a “primary interoperability enabler” (Danko, 2008). Interoperability, within the context
Sports have been shown to influence and shape humans in many ways. However, how sports background influences decision-making in early stage entrepreneurial ventures has not been examined closely. Hence, this thesis addressed this gap and explored how sports backgrounds influence decision-making in early-stage ventures. More specifically, it delved into how experience as an elite team sports athlet
A central part of the risk assessment of contaminated sites is to conduct surveys of the area to assess the need for remediation. Through literature and interview studies this essay examined how geophysical methods can help to improve the environmental risk assessment of contaminated sites in Sweden. The results point to five main strengths in combining geophysical methods with the conventional me
This study explores the possibility of detecting otherwise overlooked important innovations by analysis of journalistic texts through naïve text mining techniques. The over 1,000 articles serving as the source data come from the SWINNO, a database constructed through the Literature Based Innovation Output method, where they serve as sources for information on innovations. The contents of the texts
We have implemented an Intelligent Tutoring System (ITS) prototype for teaching multi-column addition and subtraction to children aged 5-10, using a digitalized version of the Montessori bank game exercises. An Intelligent Tutoring System is a piece of software that teaches a certain subject to its users, and that typically uses artificial intelligence related algorithms to personalize the educati
This thesis has been performed at Saab Technologies in Gothenburg. Saab is a global defense- and security company that specializes in air-, land and marine defense. Saab in Gothenburg develops effective solutions for monitoring, warning, location and defense systems. The thesis work which has been initiated by Saab, involves development of methods and tools in order to dimension the network compon
People are moving from rural to urban areas at an unprecedented rate, resulting in a high concentration of people subsisting on outside resources being constantly brought in. This presents a variety of complex sustainability problems. It is a resource-intensive system susceptible to supply shocks which could threaten food security. Many foods grow in cities, such as fruits on city trees, so utilis
This thesis has two major purposes: (1) to create a 3D virtual “reconstructive” model of the peristyle with the nymphaeum wall (room b) of the house V 1,7 (House of the Bronze Bull) in Pompeii, and (2) to prepare a probability map based on this model that will show the reliability level for each individual part. The author underlines the importance of recording paradata of the entire workflow. The
This thesis explores the value of collaboration in the development of temporary use in urban voids. By examining the role of different actors and capabilities of municipalities, the thesis investigates the conditions needed in order to realize the temporary use. Two cases in various geographical contexts, a temporary use in Malmö and a vacant lot in Arlöv, are studied. In addition to studying thes
Av den svenska befolkningen är det ca 15 % som lider av födoämnesallergi. Små mängder av ett allergent ämne kan orsaka allvarliga konsekvenser. Därför har alla livsmedelsföretag i Sverige ett lagstadgat ansvar att producera allergensäkra livsmedel. Otillfredsställande hantering av allergener vid de olika produktionsstegen kan ligga till grund för allergenkorskontaminering. Goda grundförutsättninga15 % of the Swedish population suffers from food allergy. Low doses of an allergenic substance may cause serious consequences. Therefore, it is mandatory by law for all food producing companies in Sweden to produce allergenic safe food. Unsatisfactorily handling of allergenic substances in the different steps of food production may cause allergenic cross contamination. Sound prerequisites are of m
Omfattande studier på Lunds Tekniska Högskola (LTH) har under de senaste åren inriktats på hur egenskaperna i asfaltbruk kan optimeras eftersom de har avgörande betydelse för asfaltens funktion. Förutom naturligt förekommande filler i asfaltmassa har tillsatser såsom vaxer, fibrer och polymerer blivit allt vanligare. Hur dessa tillsatser påverkar asfaltbrukets egenskaper är viktigt att utreda för The durability of asphalt can be investigated with fatigue tests, which unfortunately are very laborious and costly. Therefore, they are not used as often as they should. At LTH in Lund, an alternative method is utilized using a dynamic shear rheometer, DSR, on asphalt’s mastic for fatigue properties testing. The properties of asphalt mastic are crucial for the asphalt pavements ability to withsta
Tonkilometermetoden används för beräkning av andelstal för enskilda vägar som är gemensamhetsanläggningar. Den trafikmängd som olika fastighetstyper genererar återspeglas i vissa framtagna schablonvärden. Eftersom det saknas framtagna schablonvärden för specialfastigheter såsom vindkraftverk och vattenkraftverk har jag genom detta examensarbete undersökt möjligheten att ta fram schablonvärden för
