Vid analys av fluider med akustisk spektroskopi finns ett behov av att finna multivariata metoder för att utifrån akustiska spektra prediktera storheter såsom viskositet och densitet. Användning av artificiella neurala nätverk och bayesiska nätverk för detta syfte utreds genom teoretiska och praktiska undersökningar. Förbehandling och uppdelning av data samt en handfull linjära och olinjära multivariata analysmetoder beskrivs och implementeras. Prediktionsfelen för de olika metoderna jämförs och PLS (Partial Least Squares) framstår som den starkaste kandidaten för att prediktera de sökta storheterna..

If customers respond differently to a campaign, it is worthwhile to find those customers who respond most positively and direct the campaign towards them. This can be done by using so called incremental response analysis where respondents from a campaign are compared with respondents from a control group. Customers with the highest increased response from the campaign will be selected and thus may increase the company?s return. Incremental response analysis is applied to the mobile operator Tres historical data.

Föreliggande uppsats har som främsta syfte att skapa en prognosmodell för bruttoregionalprodukten (BRP) för Sveriges 21 län. Behovet av en prognosmodell motiveras av att Statistiska centralbyrån (SCB) i dagsläget redovisar de definitiva siffrorna av BRP med två års fördröjning. Det kan därmed finnas ett intresse hos regionala beslutsfattare att få en uppfattning om hur BRP utvecklats under de två senaste åren. Metoden som används är bayesian model averaging (BMA), vilken kommer att utvärderas samt jämföras med två andra metoder: En multipel linjär modell som skattas med minsta kvadratmetoden där variabelselektion utförs med best subset selection (BSS). Den andra metoden är en tidsseriemodell och kallas här för en longitudinell modell (LM).

The problem of separating a non-rectangular foreground image from a background image is a classical problem in image processing and analysis, known as matting or keying. A common example is a film frame where an actor is extracted from the background to later be placed on a different background. Compositing of these objects against a new background is one of the most common operations in the creation of visual effects. When the original background is of non-constant color the matting becomes an under determined problem, for which a unique solution cannot be found. This thesis describes a framework for computing mattes from images with backgrounds of non-constant color, using Bayesian statistics.

The tourism industry is growing and with its growth competition between destinations rises. In competition, cooperation and collaboration between tourism operators seem beneficial when creating an attractive and dynamic tourist destination.The purpose of this study is to describe and discuss the significance and influence of tourist related networks at a tourist destination, and therefore this study aims to examine the question: What significance do the tourist related networks have at a tourist destination?This study focuses on seven networks on Gotland that are tourism related, and the representatives of the networks were interviewed in order to get their view on the network and its significance to the destination. The study shows that networks have an important role in creating a unified tourist product of the destination, and in reaching out to the potential visitors through joint destination marketing. The study also shows that the tourism related networks helps to improve the reception of the tourist at a destination and to secure the quality of the tourist destination and its tourist products..

The aim of our study was to examine how Swedish journalists use the three social networks Facebook, Twitter and blogs to find news. We wanted to study which group of journalists that were using these networks most frequently and why. We also wanted to find out which of the three networks they use the most.We made a questionnaire which we sent out by e-mail to 400 Swedish journalists. 215 of them participated in our study.We analyzed the results of the responses from the questionnaire and discussed patterns and relations between them.The study establishes that the majority of the respondents believe that the networks are very useful and effective in their work.Our results show that out of the three social networks the journalists who participated in our study prefer to use blogs as sources in their line of work, as they are full of information from individuals and contain unique facts and stories.Alongside the results we discussed how social networks might be used in the future of journalism. Most of the respondents are aware of the possibility that they may need to increase the usage of them eventually, and that they will be an important part of the journalistic work process in the future. .

The major aim of the thesis is to describe the networks, relations and marketing of some university libraries and their customers in the year 2000. I illustrate how these issues interact and whether they have changed due to the recent development of technology and if so, how. The thesis is based on interviews with two directors of libraries and two librarians at two different libraries. A small survey with 16 questionnaires has also been performed in order to get a more general view on librarians' opinions in these questions. The thesis mainly shows that the networks in which the respondents take part primarily exist in the library sphere and towards the universities.

The major aim of the thesis is to describe the networks, relations and marketing of some university libraries and their customers in the year 2000. I illustrate how these issues interact and whether they have changed due to the recent development of technology and if so, how. The thesis is based on interviews with two directors of libraries and two librarians at two different libraries. A small survey with 16 questionnaires has also been performed in order to get a more general view on librarians' opinions in these questions. The thesis mainly shows that the networks in which the respondents take part primarily exist in the library sphere and towards the universities.

The major aim of the thesis is to describe the networks, relations and marketing of some university libraries and their customers in the year 2000. I illustrate how these issues interact and whether they have changed due to the recent development of technology and if so, how. The thesis is based on interviews with two directors of libraries and two librarians at two different libraries. A small survey with 16 questionnaires has also been performed in order to get a more general view on librarians' opinions in these questions. The thesis mainly shows that the networks in which the respondents take part primarily exist in the library sphere and towards the universities.

Moldova is one of Europe?s poorest countries with a struggling business environment and an unpredictable political situation. The purpose of this thesis is to understand the implications of corruptions and why networks have come to play a key role in the Moldovan culture and if the formations of network are due to heritage or an effect of functionalism. The focus of the study is also to explain how the networks develop and the formation and maintenance of loyalty and trust among the members of the network. The study is of a qualitative nature that uses a key informant sampling method to get access to members of different business networks.

The major aim of the thesis is to describe the networks, relations and marketing of some university libraries and their customers in the year 2000. I illustrate how these issues interact and whether they have changed due to the recent development of technology and if so, how. The thesis is based on interviews with two directors of libraries and two librarians at two different libraries. A small survey with 16 questionnaires has also been performed in order to get a more general view on librarians' opinions in these questions. The thesis mainly shows that the networks in which the respondents take part primarily exist in the library sphere and towards the universities.

The major aim of the thesis is to describe the networks, relations and marketing of some university libraries and their customers in the year 2000. I illustrate how these issues interact and whether they have changed due to the recent development of technology and if so, how. The thesis is based on interviews with two directors of libraries and two librarians at two different libraries. A small survey with 16 questionnaires has also been performed in order to get a more general view on librarians' opinions in these questions. The thesis mainly shows that the networks in which the respondents take part primarily exist in the library sphere and towards the universities.

The internet has become an increasingly part of everyday life with digital artefacts like smartphones and tablets. We?re looking at the usage of social networks and how the usage relates to traditional addiction. We conducted a quantitative research where 84 poeple finished our web survey. Our research focused on addiction, time spent on social networks, normal and non-normal usage and general user patterns.

The purpose of this thesis was to illustrate the connection between personal networks and entrepreneurial business in the music industry. It also aims to examine how and why entrepreneurs in the music industry use personal networks in their entrepreneurial business activities. In order to explore the extent to which entrepreneurs in the music industry obtain support through personal networks, a case study was conducted based on interviews with entrepreneurs in various areas of the music industry. The study has shown that entrepreneurs in the music industry clearly see distinct advantages through the use of their personal networks, especially in terms of an enhanced supply of resources and through an increased amount of business opportunities. Personal networks have also shown to constitute a considerable amount of moral support for the entrepreneurs in the development process of the entrepreneurial business.

The aim of this study was to enlighten social workers experiences of social networks direct influence in Swedish social services, and in which ways those influences are manifested. Some of the issues that are being explored in this study are: The separation of the private sphere and professional duties; boundaries and dual relationships that occurs inside social networks; the use of social networks as a control-instrument in authority exercise towards clients; and social networks arising impact on social work. The empirical material was collected with nine qualitative interviews with social workers stationed at different social service departments in a Swedish municipality. Also one qualitative e-survey was sent out to, and answered by four social workers with a managerial position in the same municipality.The results reveal that several informants have experienced different problematic situations involving clients within the social networks. This study shows that the informants are very restrictive with what information (text and pictures) they publish on their facebook-profiles, because of their position of authority and the awareness of the possibility of always being watched.