This thesis is a study of long-term voltage stability in power systems following a severe disturbance. An optimization method for solving the optimal power flow problem is used on power system models. The method tries to optimize the generated active power while fulfilling the requirements from the consumers. Dynamic limitations of the generators are taken into account and an extension of the opt

Background: The ability to hear changes in a sound envelope is called temporal resolution and is assumed to have a key role in binaural speech segmentation. The development of temporal resolu-tion is not fully explored, but studies indicate that it develops into adult-like efficiency at approxi-mately 8-13 years of age, while binaural speech segmentation has an extended development up until approx

Interest in modelling electricity prices has, despite its relatively short history, resulted in widespread types of models that tend to be too intricate to incorporate most price characteristics. This thesis pursues a flexible approach that comprehends stylized facts of electricity prices while it still handles complexity in order to facilitate calibration and forecasting. Although time-varying tr

Popular science summary Reductive evolution in fungi? It has been shown that the super kingdoms of Bacteria and Archaea are under the influence of reductive evolution compared to Eukaryotes. Even if the process of reductive evolution is not the predominant mode of evolution amongst Eukaryotes, since the majority of species are not growth optimized, the process may still be present. It has been

Popular science summary Are drugs only drugs for human being? An experiment to see if some of the anthropogenic pharmaceuticals are toxic contaminants for the aquatic environment. All kinds of pharmaceuticals have been using widely and the amount has been increased significantly during the last few decades. Concerns about the occurrence of pharmaceuticals releasing into different matrixes of th

Problem/bakgrund Att inte våga eller vilja vittna för polis och domstol är ett bekymmer för rättsväsendet, och för samhället i stort. Medias framställning av rädsla om hot, trakasserier och våld mot människor som vittnar, skapar negativa föreställningar och myter hos allmänheten. Syfte och frågeställningar Uppsatsens syfte är att utifrån ett organisatoriskt perspektiv på en geografiskt lokal n

This essay is written in collaboration with the Environment Department in Malmö. The essay is a study in how the recycling of waste caused by visitors at major public events works. These events last for a shorter period of time and usually attract large numbers of visitors, thus large amounts of waste are produced during this short period. Previous investigations show that only a few major events

The importance and future of smallholder farming is controversial, with many scholars advocating for its development in order to eradicate poverty, while few others see small-scale farming as an obstacle for development. Regardless of which theory one supports, solving the smallholders issue is not an overnight project rather a long process. While the future of this group, which represents over 80

Popular science summary You are what you eat In this project I used a method called stable isotope analysis. This method is based on the principle ‘you are what you eat.' To begin whith, isotopes are forms of the same element sharing the same number of electrons but differ from each other in its number of neutrons in the nucleus. For example, stable isotope of 13carbon has one extra neutron

Lärande bedömning är den kanske starkaste pedagogiska riktningen inom svensk skola just nu. Bedömning ska enligt den inte användas i första hand för att sätta betyg och sortera, utan vara en utgångspunkt för att eleven ska lära sig mer. Kamrat- och självbedömning blir viktiga ingredienser i undervisningen. Ensemblespel i grundskolans högre årskurser involverar de allra flesta kunskapskrav i den ny

Popular science summary To Migrate or Not to Migrate! An interesting experiment to test how gender, personality traits, size, and condition affect migration in Roach (Rutilus rutilus). Partial migration is a phenomena in which migration does not take place in every individual’s lifecycle. The reason for this type of migration has not yet been totally understood. However, there has been studies

The adhesive properties in packaging material have been simplified for a long time. As more advanced packages are developed the correct mechanical properties for the adhesive strength is needed to make packages cost efficient and reliable. The problem today is that no good evaluation technics have been developed for determining the mechanical properties of adhesives. Different test methods for de

Reportaget innehåller en intervju med 2 tjejer som driver eget företag inom personlig träning i Stockholm. Dessutom intervjuer med olika akademiker och representanter för utbildare av personliga tränare. Detta för att få en så bred bild som möjligt på hur de nya trenderna påverkas människorna och folkhälsan.

Titel: Strategier för relationskommunikation via sociala medier Författare: Eric Malmquist Handledare: Jörgen Eksell Nyckelord: Marknadsföring (relationsmarknadsföring, industriell marknadsföring), sociala medier, B2B, kommunikation (strategisk kommunikation, marknadskommunikation, relationskommunikation), meningsskapande, dialog och konsumentbeteende Problem: Problemet och kunskapsluckan som jTitle: Operational strategies for relationship communication in social media Author: Eric Malmquist Advisor: Jörgen Eksell Keywords: Marketing (Industrial marketing, relationship marketing), Communication (strategic communication, marketing communication, relationship communication), B2B, Social media, Meaning creation, Dialogue and Consumer behaviour. Problem: There are very few studies regard

The main purpose of this explorative master thesis is to describe, explain and understand the main success factors that lie behind the regional innovation system in Silicon Wadi in Israel. This is done in order to suggest some tentative ideas on how to further develop the emerging ICT cluster in Malmö/Lund. Four sub purposes have been applied in order to achieve the main purpose: To understand why

Purpose The purpose of the report is to look into the effect of changing from air shipments to sea shipments at Tetra Pak Technical Service AB and the economical and environmental impact of such a change on the supply chain. Methodology The report is carried out by collecting the data regarding the different transportation modes in interviews with responsible persons within Tetra Pak and the trans

The importance of technology as a source of competitive advantage has made the technological development an important part of the strategic management of a company. Since investment in technological development can be expensive and can involve a high risk it is essential to integrate the company’s technologies with its general commercial strategy. To be able to do that it is important to have an u

Depletion of onshore and shallow water reserves, in combination with new subsea technology, has made the petroleum industry advance into deeper water. However, new technology also brings new risks. Since most widely accepted standards and regulations are not directly aimed for subsea systems, new methods have to be developed. By developing a LOPA-model, which can be used specifically for subsea co

Popular science summary Spatial Memory Accuracy in Marsh tits (Poecile palustris) - an experimental study Food hoarding is a prevalent food protection behaviour in nature and it is performed by variety of animals including some mammals and birds. Two main food hoarding strategies have been observed among animals; larder hoarding and scatter hoarding. Larder hoarders aggregate all their food in

Microelectrodes today and nanoelectrodes tomorrow further studies in fields of science such as neurobiology and electrophysiology, and are already in use as neural prosthetics. When electronic devices are used in biomedicine, especially when needed for chronic implantation, their ongoing downscaling is largely motivated by two aspects: biocompatibility and specificity. It has been shown that downs