Vehicle rollover accidents are a particularly dangerous form of road accident. Commercial vehicles are especially prone to rollover accidents due to their high centres of gravity. A nonlinear control strategy is presented which guarantees asymptotic tracking of a yaw rate reference while bounding the roll angle, thus preventing rollover. A new computationally-efficient control allocation strategy

Resource-optimization of the infrastructure for service oriented applications require accurate performance models. In this paper we investigate the performance dynamics of a MySQL/InnoDB database server with write-heavy workload. The main objective of our investigation was to understand the system dynamics due to the buffering of disk operations that occurs in database servers with write-heavy wor

The microflora of Herrgård cheese produced at three dairies was compared after three and six months maturation. The microflora of cheeses from two of the dairies was dominated by a spontaneous microflora of Lactobacillus after three months of ripening, while starter bacteria still dominated in cheese from the third dairy after six months. Isolates were typed by the PCR-based method Randomly Amplif

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Popular Abstract in Swedish Det finns många kemikalier i vår miljö där vissa har visat sig göra hanliga fiskar honliga, äggskalen tunnare hos fåglar och som kan göra honliga snäckor hanliga, och det verkar ju inte vara en bra framtid för dessa djur. Sådana kemikalier går under benämningen endokrina störare, eftersom de stör naturliga biologiska processer som är viktiga för djurs utveckling av orgaCommunities are composed of organisms that interact with each other and with the non-biological environment. There are also anthropogenic pollutants in the environment that also interact with the organisms. Estrogenic endocrine disrupting compounds, for example 17α-ethinylestradiol (EE2, the active compound in contraceptive pills), released into surface waters can have negative effects on the orga

Protein structure and stability are inherent in the amino acid sequence and governed by non-covalent interactions. The cooperation between forces is, however, perplexing and not well understood. In order to elucidate and predict protein folding and stability, detailed studies of non-covalent interactions are required. Presented in this thesis are detailed studies on electrostatic interactions in

Popular Abstract in Swedish Syftet med min avhandling är att skildra de grundläggande drag som bär upp den politiska kulturen för att synliggöra förutsättningarna för politiskt engagemang. Utifrån olika vardagssituationer beskrivs hur det går till att ”göra” politik. Jag följer två nämndordföranden i Helsingborgs kommun i deras politiska vardagsarbete och lyfter fram olika situationer för att konkPolitical Culture and Social Engagement. An ethnological study of everyday parliamentary life in Helsingborg. The goal of my thesis is to, by examining foundational features which support political culture, make visible prerequisites for political engagement. Using diverse everyday situations, the thesis describes how one “does” politics. I follow two committee chairpersons in the municipality of

Anomaly detection is becoming a powerful and necessary component as wireless networks gain popularity. In this paper, we evaluate the efficacy of PCA based anomaly detection for wireless mesh networks (WMN). PCA based method [1] was originally developed for wired networks. Our experiments show that it is possible to detect different types of anomalies, such as Denial-of-service (DoS) attack, port

Popular Abstract in Swedish Högt blodtryck (hypertoni) och åldersdiabetes (typ 2 diabetes) är två av västvärldens vanligaste folksjukdomar, i Sverige är förekomsten ca 15% respektive 3,5%. Båda tillstånden ger upphov till hjärta-kärlkomplikationer såsom hjärtinfarkt, hjärtsvikt och stroke och orsakar hög sjuklighet och dödlighet i befolkningen. Kombinationen av hypertoni och typ 2 diabetes ökar ytThe causes of hypertension (HT) and type 2 diabetes (T2DM) are mainly unknown, but they arise from interplay between several genetic and environmental factors. The aim of this thesis was to investigate whether polymorphisms in putative candidate genes for HT increase the susceptibility to HT and/or T2DM. The DD genotype of the angiotensin converting enzyme (ACE) gene I/D polymorphism was associate

Human papillomavirus (HPV) type 16 is the major cause of cervical intraepithelial neoplasia and anogenital cancers. The antibody response to papillomaviruses is a key determinant of protective immunity and forms the basis for prophylactic vaccine development as well as for seroepidemiology. The present thesis has evaluated different methods for HPV antibody measurements, determinants of the HPV an

Replacing fossil fuels by biofuels and increasing energy efficiency are often considered to be options for reducing the net emission of greenhouse gases. This thesis presents the results of analyses of energy efficiency, emission and cost of whole energy system chains, from the natural resource to the end user when heating detached houses in a Swedish context. External costs and taxes of the energ

Low rate codes can be used to achieve coding gain in spread spectrum applications such as direct-sequence code division multiple access. Super-orthogonal- and maximum free distance convolutional codes as well as super-orthogonal turbo codes have previously been reported to be suitable for such systems. We focus on the design of component codes for low rate turbo coding schemes targeting the frame-

In every gathered group of people, one person will be appointed the leadership. The choice of leader will be mutual and based on that this person has the most appropriate and trained talent for leadership and is best prepared for the task. Ultimately there should be a team of leaders that support each other and co operate in the leadership, or take turns. Leadership is dependent on the human facto

Popular Abstract in Swedish En avgörande skillnad mellan encelliga organismer såsom bakterier och multicellulära som oss själva är behovet av kommunikation och samarbete mellan cellerna. Redan under fosterstadiet måste cellerna meddela sig med varandra avseende var de skall ta vägen och vilka uppgifter var och en skall åta sig. Exempelvis måste en cell fortlöpande få information om huruvida den skThe pro-inflammatory effect of leukotrienes is an important element in the pathogenesis of multiple disorders, including asthma and inflammatory bowel diseases (IBD). A serious concern for IBD patients is the increased risk of developing colorectal cancer and since there seems to be a general connection between inflammation and cancer we hypothesised that LTD4 induced signalling events could be in

The acid-catalyzed rearrangement of 1,4,5,8-tetramethylnaphthalene was used to determine the acidity of media used for EPR spectral studies of radical cations. The radical cations of methyl-substituted naphthalenes were shown to undergo dimerization reactions. The apparent persistency of the radical cation of hexamethylbenzene was due to the slow oxidation when thallium(III) trifluoroacetate was