Filetype
The subject of this thesis is theoretical examination of freezing phenomena inside fire sprinkler systems during activation at low temperatures in the surroundings. Many sprinkler systems are installed in environments such that they must be operable at subfreezing temperature conditions. During activation of such a system, water is assumed to penetrate a significant distance and without interrupti
This Master’s Thesis, under the Division of Machine Design at Lund Institute of Technology, was conducted at Presona AB located in Tomelilla, Sweden during the first half of 2006. Presona AB is a leading manufacturer of equipment for handling and compression of waste. The object of the thesis is to reduce the manufacturing cost of Presona’s heavy duty stationary compactor. This is acquired by rede
The human race has for a long time contributed to an increase of the environmental problems, however in recent times they have begun to deploy measures to counter this. One of these measures is environmental classification systems, which is used in the construction- and property sector. Environmental classification systems are methods which evaluate a building's environmental performance in or
Since the adoption of the Charter of the United Nations the pattern of conflict in the international arena has drastically changed. From largely being a scene for inter-state conflicts, internal conflicts have predominated the post-war era. The few international conflicts that the post-war world has witnessed have originated in civil conflicts. The principle of non-intervention implies the duty fo
In a democracy the people should be able to communicate with the politicians and express their opinions. Social movements, being part of the civil society, have their own ways of influencing and making their voices heard. Theories about institutionalisation state that social movements are radical in the beginning, but become more and more professional and less radical the more they grow. They have
The increasing demand for solid biofuels, such as logging residue fuels, has highlighted the importance of considering that, in contrast to fossil fuels, biofuels are produced in dynamic ecosystems. The environmental effects of changes in management policy, whether positive and negative, are not obvious. For example, calculations of the carbon budget in single forest stands show that the carbon ba
Biophysical models that describe the outcome of white matter diffusion MRI experiments have various degrees of complexity. While the simplest models assume equal-sized and parallel axons, more elaborate ones may include distributions of axon diameters and axonal orientation dispersions. These microstructural features can be inferred from diffusion-weighted signal attenuation curves by solving an i
Popular Abstract in Swedish Det är en utbredd uppfattning att gränserna mellan högkulturen och masskulturen blivit mindre skarpa i vår postmoderna kultur. Den höga litteraturen lånar friskt former, motiv och grepp från masskulturen – och viceversa. Hur skall man tolka den estetiska trafiken mellan kulturella sfärer – höga respektive låga – som länge ansetts oförenliga? Vad består trafiken av och The Struggle for High and Low Culture. Studies in the Late Twentieth Century Novel’s Relationship to Mass Culture and Modernity. It is a widespread opinion that the boundaries between high culture and mass culture have become less defined in our postmodern culture. How is the aesthetic exchange to be interpreted between cultural spheres – high and low respectively – long considered incompatible?
Popular Abstract in Swedish På grund av den förutspådda energi krisen som föranleds av att oljan tar slut, är det viktigt att söka efter alternativa energikällor. Att utnyttja solljuset via en artificiell fotosyntes är en intressant möjlighet. Det långsiktiga målet för forskning på detta område är att bygga molekylära och/eller fasta material som kan använda solljus för att dela vatten i dess bestDue to the predicted energy crisis when fossil fuels will be exhausted it is important to search for alternative energy sources. Utilizing sunlight via artificial photosynthesis is an interesting possibility. The long-term goal for research in this area is to design and build molecular and/or solid state systems that can use sunlight to split water and produce fuel (e.g. hydrogen). Nature tells us
This paper is built upon recognizing the need that digital forensic investigators are required in many cases to investigate, understand and report on all kind of cyber-crime including novel security breaches which have not been performed in the past. When an investigator is faced with the challenge to explore a new threat, we argue that the inquiry dynamics do not differ from an organisational emp
Objective Fetal and neonatal alloimmune thrombocytopenia (FNAIT) is a rare disease that can result in severe bleeding in a fetus or newborn, including intracranial hemorrhage. Maternal-fetal human platelet antigen (HPA)-1a incompatibility is a prerequisite to maternal HPA-1a alloimmunization, which may result in FNAIT. The risk of HPA-1a alloimmunization is approximately 25-times higher in HPA-1
The purpose of this thesis is to examine how the president of Venezuela, Hugo Chávez, is described in Swedish mass media. The research question of the paper is "How was president Hugo Chávez portrayed in Swedish newspapers in the 2004 Venezuelan referendum?". The answer of this question provides information about how the mass media form the image of current political events which is an i
This essay examines contemporary political discourses about the Mau Mau insurgence, which took place in Kenya in 1952-1960. During the Mau Mau, the people living in the Central Highlands region, mainly of the Kikuyu ethnic group rebelled against colonial rule. The British came down hard on the Mau Mau, detaining, killing and torturing large portions of the Kikuyu population. There was a divide wit
We propose a rational fabrication method for nanoimprinting moulds by scanning probe lithography. By wet chemical etching, different kinds of moulds are realized on Si( 110) and Si( 100) surfaces according to the Si crystalline orientation. The structures have line widths of about 200 nm with a high aspect ratio. By reactive ion etching, moulds with patterns free from the limitation of Si crystall
This investigation makes a survey of the spread of fire and the fire development in low-rise residential building areas through obtaining the literal knowledge of factors having influence on a fire in one burning building and fire spread between buildings within a group of single-family houses. The purpose of the investigation was, on basis of the knowledge, to propose improved measures and the ch
Popular Abstract in Swedish För att öka förståelsen för hur ljud sprider sig och strålar från byggnadskonstruktioner utförda i lättbyggnadsteknik så behövs teoretiska beräkningsmodeller. Sådana modeller presenteras i avhandlingen. Med lättbyggnadsteknik avses konstruktioner som inte är massiva, exempelvis väggar och bjälklag bestående av trä- eller stålreglar/bjälkar. Stegljudet, det vill säga detIn order to increase our knowledge of the sound transmission and radiation processes of lightweight wall and floor structures, theoretical models are needed. Detailed models may form a valuable tool. In lightweight floor structures, impact sound insulation is perhaps the most important property to consider. This thesis presents an overview of various solution strategies that may be useful in findi
Iran has one of the highest rates of road traffic accidents worldwide and according to a recent UNICEF report, the current rate of road accidents in Iran is 20 times more than the world average. Using extensive interviews with a variety of Iranians from a range of backgrounds, this book explores their dangerous driving habits and the explanations for their disregard for traffic laws. It argues tha
Popular Abstract in SwedishDjurgravpoesi är en form av tillfällespoesi och en subgenre till den vanliga begravningspoesin, som skrevs över människor. Den som skapade förutsättningarna för att denna diktart skulle få fäste i Sverige var änkedrottning Hedvig Eleonoras hovpoet Erik Lindschöld; hans gravdikter över änkedrottningens tikar är sannolikt skrivna på 1670-talet. Här börjar en linje som går This dissertation examines a hitherto neglected genre in Swedish poetry of the 17th and 18th centuries: the animal epitaph. From 1670 to 1760 a considerable number of such poems were composed by several of the leading poets of the day. In this dissertation, besides tracing the history of the genre back to its origins in the ancient Greek epigram, I am chiefly concerned with the functions that the
