Voice over IP (VoIP) is a relatively new technology that enables voice calls over data networks.With VoIP it is possible to lower expenses, and increase functionality and flexibility. FromSwedish Armed Forces point of view, the security issue is of great importance, why the focus inthis report is on the security aspect of the two most common open-source VoIP-protocols H.323and SIP, some of the most common attacks, and counter-measures for those attacks.Because of the level of complexity with a network running H.323 or SIP, and the fact that it hasyet to stand the same level of trial as of traditional telephony, a VoIP-system includes manyknown security-issues, and probably at present many unknown security flaws.The conclusion is that it takes great knowledge and insight about a VoIP-network based onH.323 or SIP to make the network satisfyingly safe as it is today, and is therefore perhaps not asuitable solution for the Swedish Armed Forces today for their more sensitive communications..

The aim of this study has been to investigate actors? methods for acquiring information that is necessary for their profession, with a focus on the more random methods they might possibly use. The study is based on the following questions: What information needs do actors have in relation to their profession? Which methods do actors use to procure information? Which information systems do actors use? What role does the library play in the actors? acquisition of information? Through an interview study with 10 informants a picture is formed of the actors? information behavior. With the help of theoretical ideas regarding random methods of acquisition, we describe which information needs actors have and how they acquire that information.

Syftet med studien är att undersöka hur lärare och elever på musik- eller kulturskola kommunicerar med varandra i enskild undervisning med fiol som instrument. Med hjälp av videoobservation som metod har tre lärare och deras elever observerats. Studiens teoretiska utgångspunkter utgörs av ett designteoretiskt och multimodalt perspektiv. I resultatet framkommer att lärarna använder sig av ett flertal olika kommunikationssätt i sin undervisning. Kommunikationssätten är instruerande, frågeställande, förevisande, metaforiskt och humoristiskt kommunikationssätt.

Dogs with behavioral problemsThis study was made to investigate if there was a problem in today?s society regarding dogs showing for example excessive aggression and/or anxiety. The main questions in this study was "is there a problem today" and "if there is a problem, what can we do to prevent it". To investigate these questions interviews were made with six different professions concerning the dog domain. The result of the study shows that three of the interviewed considered it to be a problem, one did not have an opinion on the matter and two choose not to call it a dog related problem because it mostly depends on the owner.

Andelen som arbetar vid bildskärm fördubblades i Sverige mellan 1989-1999, vilket har medfört en växande oro över en ökad risk för muskuloskeletala besvär. Syfte: förändrade ergonomisk anpassning respektive progressiv avspännig symptombilden i nack- och skulderregionen hos datorarbetare. Metod: 16 personer med mer än ett års datorvana och som arbetade i Boden deltog i projektet. Som utvärderingsinstrument användes ett frågeformulär som besvarades före och efter en interventionsperiod på fem veckor. Deskriptiv databehandling.

I denna studie undersöker jag barn i förskolan mellan fyra och fem år. Vad de har för tankar i ett möte med för dem ett okänt djur, vattenloppan. Aktiviteten där jag även ställt frågor till barnen angående bl.a. vattenloppans utseende och livsmiljö. Samtidigt som jag filmat har jag kunnat observera två grupper som möter dessa djur antingen med hjälp av bild och video eller med verkliga djur.

The aim of this paper is in part to distinguish the ideas raised in the Swedish political debate on the new discrimination law in relation to protection of groups. Is protection by law against discrimination needed for the individual or the group? If it is needed for members of groups, are these groups viewed on as static or variable. Are there any conflicts present between group interests? We link these ideas to three different theoretical perspectives: multiculturalism, feminism and intersectionality and further examine the differences and contradictions between the perspectives represented by members of parliament.

This thesis takes on a broader perspective of the modern age phenomenon we call spam. One of the aims of this thesis is to present and to compare the variety of methods used in the day-to-day fight against spam, as far they have evolved today, but also to present and discuss some alternative methods for suggested future use. The properties of a common e-mail spam are analyzed to show how the components that make up the structure in an e-mail can be used to classify spam. Furthermore I explain the naïve Bayesian classification methods, the signature-based method, the commonly used rule-based method and the challenge and response method and discuss these. The widespread use of blacklists is also explained and a close new variant to blacklisting, Turntide is presented and discussed.

The purpose of this Master Thesis was to study the reader in the informal reading group. To fulfil our purpose we have used the following questions: how did the reader become a reader and what does her reading look like, why do people choose to participate in a reading group, how may the group influence the individual member in her reading and interpretation of a book, does the reading group have a therapeutic function, how does the informant find the group dynamics and different roles in the reading group, and finally how does the informant experience the discussion in the reading group. We have used two studies about reading groups, one by Elizabeth Long and one by Jenny Hartley. Our theory is divided into reading and group psychology. We have interviewed seven women belonging to different reading groups.

Detta kandidatarbete undersöker problemet med konvergeringen av narrativ och interaktion och varför en konvergering mellan dessa hämmar deltagarens inlevelse i ett spel. Utifrån spelet Traverser redovisas i detta kandidatarbete processen och resultatet av hur ett interaktivt narrativ kan väcka inlevelse hos deltagaren genom att låta berättandet ske subtilt och icke-linjärt, där spelaren uppmanas till att vilja utforska narrativet på egen hand i form av en miljö i Traverser. This bachelor?s thesis discusses the problem of converging narrative and interaction and why the convergence between the two tends to arrest the participants immersion within a game. Through an interactive narrative by letting the narration take place subtly and nonlinearly, this bachelor?s thesis reports the process and result of how an interactive narrative could provoke immersion within the game Traverser, where the actor is urged to explore the narrative independently in the shape of an environment.

Title: The process of gentrification ?the transformation of declined neighbourhoods into attractive ones Gentrification = ?A social process of change where people with high socioeconomic status move into neighbourhoods which traditionally has been dominated by people from the lower classes or from ethnical minorities.? (Nationalencyklopedin 2010).In many cities around the world, disinvested neighbourhoods become the place to be, where everything happens. This usually occurs when different social groups, such as bohemians, homosexuals and artists, move into a declined and disinvested neighbourhood. After a while, people from the middleclass move in to the area due to its increased attractiveness, and start to renovate their properties. This usually leads to higher rents, which force some of the original inhabitants to leave the neighbourhood.

The aim of this study is to investigate a number of class teachers' thoughts on the use of information and communications technology (ICT) in early literacy learning. The study has been conducted as a qualitative study, interviewing five teachers with the help of an interview guide. Three central questions were posed.What perception do the teachers have about the use of ICT in their tuition?What perception do the teachers have about the pupils' literacy learning in teaching with ICT tools?What perception do the teachets have about teaching and learning by means of ICT when it comes to pupils with reading and writing difficulties/dyslexia?The overall theoretical basis of the study is Vygotskij's sociocultural theory.In conclusion, the result of the study is as follows.Most class teachers feel that the training they have undergone in ICT education was adequate, but they also call for skill development.Most teachers believe that the use of ICT tools provide opportunities to adapt their teaching to pupils' knowledge level. The teachers' opinion is that ICT in teaching is useful for pupils' progress in early literacy learning.Most teachers also believe that ICT tools in teaching can be of some help for pupils with reading and writing difficulties/dyslexia.One obstacle in helping these pupils is lack of time.Therefore, the majority of the teachers hand these pupils over to special education outside the classroom..

AbstractThe aim of the studie was to investigate if the Pediatric Early Warning Score system, PEWS, is an useful instrument on a children's inpatient ward, regarding the detecting of deterioration in children's vital signs. For this, a quantitative descriptive design with qualitative elements was used. Method: Study specific questionnaires were distributed to 86 persons (helpnurses, nurses and doctors). Of these, 36 answered and sent back the surveys. Results: Of 36 responses 25 felt experienced a faster detection of deterioration of vital signs in the child.

With many different elective courses to choose between, a lot of students  experience anxiety over deciding which courses to study next semester. The  choice of a specific course can have a big impact on the students future studies  and/or employment. Therefore the anxiety is justified. At the same time the  number of students applying for a course often vary from year to year. This  creates issues for the responsible teachers because of the ever-changing  resource requirements.There are several different theories on decision making, addressing the  different time related states as well as the different habitual styles.

Urban planning is not only a matter of architectural trends; it is first and foremost political. This thesis seeks to understand the links between political ideas and visions for the city and the physical structure of the city. The study aims to construct a model to help understand these links, a helpful tool in analysing a city, focusing on the one hand at the physical structure of what I call "The City as a Welfare Provider" and on the other hand at "The City as a Growth Engine". It also sets out to test this model in an empirical study of Stockholm and the soon-to-be built district of Norra Station in the same city.The analysis shows that Stockholm has ambitions to be a welfare provider to its citizens, but have also adopted to a discourse of interurban competition which stresses the importance for the city to enhance economical growth. What is interesting is that the physical structures promoted in the planning documents of Stockholm are nearly exclusively those associated with the model of "The City as a Growth Engine"..