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Successful development of software systems depends on the quality of the requirements engineering process. Use cases and scenarios are promising vehicles for eliciting, specifying and validating requirements. This thesis investigates the role of use case modelling in requirements engineering and its relation to system verification and validation. The thesis includes studies of concepts and represe
The elliptic flow coefficient (v(2)) of identified particles in Pb-Pb collisions at root s(NN) = 2.76 TeV was measured with the ALICE detector at the Large Hadron Collider (LHC). The results were obtained with the Scalar Product method, a two-particle correlation technique, using a pseudo-rapidity gap of |Delta eta| > 0.9 between the identified hadron under study and the reference particles. The v
The versatility of cuboidal Mo3S4Co clusters for the preparation of complexes with different numbers of valence shell electrons (VSE) in the cluster is described. The reaction of the geometrically incomplete cuboidal cluster salt [(eta(5)-Cp')(3)Mo3S4][pts] (pts = p-toluenesulfonate) with one molar equivalent of [Co-2(CO)(8)] afforded almost quantitatively the electroneutral 60 VSE cluster [(eta(5
Software quality is an important factor of a large and complex software system. Hence, there is a need for measuring and controlling quality. Software quality has, however, many different f actors and involves implicit expectations of the behaviour of the software. This thesis investigates two aspects of improving the software quality, in particular the reliability factor. The first part of this
Haemophilia management is not uniform among countries, even within western Europe, that have close economic, social and cultural relationship. The European Paediatric Network PedNet aims to share experiences in the field of the care of boys with haemophilia. In 1998, a PedNet survey has shown significant disparities in 20 centres from 16 countries, particularly as regards the implementation of pro
Anandamide acts as a full vanilloid receptor agonist in many bioassay systems, but it is a weak activator of primary afferents in the airways. To address this discrepancy, we compared the effect of different vanilloid receptor agonists in isolated airways and mesenteric arteries of guinea pig using preparations containing different phenotypes of the capsaicin-sensitive sensory nerve. We found that
Objective. Our study describes sick leave during 3 years before and 3 years after diagnosis of rheumatoid arthritis (RA) in relation to referents and identifies predictors for sick leave during the third year after diagnosis of RA. Methods. One hundred twenty patients (76% women) from the Swedish early RA study TIRA were included. Disease activity and disability were registered regularly during 3
Epithelial shedding occurs in health and, extensively, in inflammatory airway diseases. This study describes deepithelialisation, reepithelialisation and associated events in guinea-pig trachea after shedding-like epithelial denudation in vivo. Mechanical deepithelialisation of an 800-microns wide tracheal zone was carried out using an orotracheal steel probe without bleeding or damage to the base
The isotope effects in formaldehyde photolysis are the key link between the delta D of methane emissions and the delta D of atmospheric in situ hydrogen production. A few recent studies have suggested that a pressure dependence in the isotopic fractionation can partly explain enrichment of deuterium with altitude in the atmosphere. The mechanism and the extent of this pressure dependency is, howev
A method for simultaneous measurements of fluorescence lifetimes of two species along a line is described. The experimental setup is based on picosecond laser pulses from two tunable optical parametric generator/optical parametric amplifier systems together with a streak camera. With an appropriate optical time delay between the two laser pulses, whose wavelengths are tuned to excite two different
With an increasing awareness of environmentalism, the transportation sector is also understanding its duty to protect the natural resources given to humankind. For the sector it is increasingly important to decrease the weight of transportation vehicles to save fuel and electrical energy. For a severe weight reduction Volvo Buses plans to launch a lighter bus structure in the coming years. This in
Liquid-liquid emulsions can be created using different mixing techniques and the equipment used for processing has a large impact on the final emulsion. Rotor-stator mixers are one of the most commonly used mixers today with multiple application areas. The droplet size is a key parameter during industrial mixing and emulsification, since it influences both the stability and quality of the product.
The main purpose of this study is to assess the impact of environmental conditions on paper-based flexible laminates tendency to curl. Any deviation in flatness may indeed affect materials processability. Two different paper-based flexible laminates are considered: a widely processed heat-sealable yogurt lid (paper / metallized polyethylene terephthalate / heat-sealing lacquer) and a prototype lam
This report is the result of a master thesis project conducted at the Global R&D Dish Care Department at Electrolux, Stockholm. The master thesis has been carried out through the Division of Machine Design, Department of Design Sciences at the Faculty of Engineering (LTH), Lund University. Electrolux is a developer and producer of household appliances active on the global market. Their focus
The accelerating impacts of climate change are seen worldwide but are particularly critical in Africa, showing the importance of the UN Agenda 2030 for sustainable development. As part of this agenda, energy transition is vital. Kenya offers ideal conditions for solar photovoltaic systems, making solar energy a compelling solution for its growing electricity needs. The purpose of the thesis is to
Writing a Renaissance: The New Negro and the path to a new Black nationalism 1917–1925 The New Negro: an Interpretation (1925), edited by the philosopher and critic Alain Locke, is regarded as a central text concerning the literary movement known as the Harlem Renaissance. Widely viewed as documenting the transition of Black American litterature into the age of modernism. The anthology sought to
Brevmall Postal address Box 117, 221 00 Lund Visiting address Main university building Telephone +46(0)46 222 12 54, +46 (0)46 222 00 00, Email john.westerlund@rektor.lu.se Vice-Chancel lor Guidelines on information security at Lund University Background The University generates and handles large amounts of information. This information must be managed in a way that ensures that the University’s n
https://www.staff.lu.se/sites/staff.lu.se/files/2023-05/Guidelines-on-information-security-at-Lund-University.pdf - 2026-07-10
