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As road networks are becoming increasingly utilised, it is increasingly important to be able to accurately predict travel times for disseminating information among road users and to support traffic management decisions and planning. Over the past few years, a new way of making such predictions utilising the space-time autoregressive integrated moving average (STARIMA) model has been introduced. Th
Modern military multi-role combat aircrafts need an emergency power system (EPU) to maintain back-up power supply for all normal and degraded flight modes. The reason for this requirement is that modern combat aircrafts are designed with built-in relaxed or negative stability. Inability of the Flight Control System to perform continuous, corrective control surface actuation, due to loss of power
Nature is a key component in many kinds of tourism experiences and is commonly perceived as an explicit goal of doing tourism. This is a long-standing feature in the histories of tourism, and presently in many contemporary, service-based economies it coincides with a cultural emphasis on nature in many other commercial representations and manifestations. This can be seen e.g. in how permutations o
This thesis consists of theoretical studies of the evolutionary consequences of environmental change in ecological communities. Paper I and II are concerned with the origin of diversity, i.e. how a single lineage can split into two, under the influence of selection induced by competitive interactions (evolutionary branching). In paper I we find that environmental fluctuations may affect the likeli
Environmental manipulation experiments showed that species respond individualistically to each environmental-change variable. The greatest responses of plants were generally to nutrient, particularly nitrogen, addition. Summer warming experiments showed that woody plant responses were dominant and that mosses and lichens became less abundant. Responses to warming were controlled by moisture availa
Popular science summary: Healing: what we can learn from white mice Stem cells are a cell type responsible for building the body. They are the ancestor cells from which all the cells making up the body’s tissues are created. Stem cells play an important role in maintaining the body in shape by repairing damages as they occur during life. We believe that if we had a better understanding of how t
Enzyme engineering for a better future It is essential for many organisms on this planet to be able to digest plants. One of those organisms is the blue mussel, which uses certain enzymes in its stomach to break down sugar fibers in the algae that it eats. But how does this really work, and can we use it for anything? Plant cells have very strong walls, protecting them from environmental stress.
The aim of this thesis has been to implement a computer program capable of modelling radial compressors. The work was conducted at the Division of Thermal Power Engineering, Department of Energy Sciences at the Faculty of Engineering, Lund University. With such a large field as radial compressors, some decomposition of the subject was necessary. This thesis focuses on modelling the impeller and di
The aim of this thesis has been to implement a computer program capable of modelling radial compressors. The work was conducted at the Division of Thermal Power Engineering, Department of Energy Sciences at the Faculty of Engineering, Lund University. With such a large field as radial compressors, some decomposition of the subject was necessary. This thesis focuses on modelling the impeller and di
Ett alternativ till att investera i ett traditionellt inhouse-system är att hyra en tjänst eller ett system av en tredje part. Detta fenomen kallas för Software as a Service (SaaS). SaaS kan enligt litteraturen bidra med fördelar för företag i form av kostnadsbesparingar och korta implementeringstider. Men det finns också kritiker till SaaS som menar att det kan medföra säkerhetsbrister och minska
Background: The observation of differences in the way apparently similar patients are treated from one health care setting to another, i.e., practice variation, have been recognized in numerous studies. The variations across the health care settings have been shown to exist for different outcomes. However, any measurement of any system will reveal some form of variation and this normal inevitable
Even enterprises with very advanced management systems seldom monitor efficiency of energy usage and materials flows within their processes and have, therefore, difficulty to effectively manage their resource efficiency. This paper is built upon experiences from a pilot implementation of a new tool for promotion of energy management and cleaner production, developed within the Energy Management an
This thesis was done in collaboration with the department of Food Technology at LTH, Aventure AB, and Arwa Foodtech AB. The aim of the project was to develop the base for a baobab based, spoonable protein snack, comparable to quarg but free from ingredients of animal origin. At the time of writing, one of the biggest if not the biggest trend in the food industry is the replacement of animal-source
Commercial private equity as an investment industry have quickly grown since its formation in the late 80’s, and now account for a significant part of the investments made both globally and in Sweden. In 2014 the Swedish commercial private equity companies had a combined turnover of 311 billion SEK, accounting for around 9 % of Sweden’s GNP. The sector has been studied extensively by the investmen
This article is a case study of the contacts between the music sector in Sweden and the GDR in the 1970s, 1980s and 1990s. The case is the activities of the East-German musicologist and music administrator Gerd Schönfelder (1936–2000) in Sweden at that time, and the debate that arose in the early 1990s when he was accused of having worked for the East German security service, Stasi. The purpose is
The transport sector accounts for approximately 20% of EU-27 greenhouse gas (GHG) emissions, and 27% of U.S. GHG emissions. With the Kyoto Protocol, Sweden and several other nations have agreed to reduce these emissions. Often, solutions that involve consolidating freight and moving it to more carbon-efficient transport technologies are advocated as the most advantageous. For such initiatives the
Scalable and reliable distributed object-oriented computing (DOC) middleware systems is an important technology in, for example, telecommunications service logic and distributed web servers. The Common Object Request Broker Architecture (CORBA), developed by the Object Management Group (OMG) is a speci cation of a common platform for DOC systems. CORBA acts as middleware, by inserting itself betwe
Working from anywhere, often associated with digital nomadism, is a growing trend that blurs the boundaries between work and leisure, with individuals choosing to work from tourist destinations. The phenomenon has caught the attention of academics, who mainly focus on the lifestyle aspects of digital nomadism. However, destination management organizations, as well as the tourism and hospitality in
During WWII, the botanist Hylander (1943, 1949) studied the floristic composition of lawns in 249 landscape gardens mostly in Sweden and concluded that they all harboured multiple, but largely the same, non-native species and genotypes that had most likely been introduced together by the sowing of some im- ported grass seed mix. As demonstrated by the later additions by, for example, Ohlsén (1947)During WWII, the botanist Hylander (1943, 1949) studied the floristic composition of lawns in 249 landscape gardens mostly in Sweden and concluded that they all harboured multiple, but largely the same, non-native species and genotypes that had most likely been introduced together by the sowing of some im- ported grass seed mix. As demonstrated by the later additions by, for example, Ohlsén (1947)
