The use of insecure networks -such as the Internet- to send and receive information has made the need for preventing unauthorised people reading it yet more important. One of the easiest way to do this is through public key cryptography. However, the problem with this solution is how to tie a specific public key to a certain subject. This is solved by letting a trusted third party issue a certificate that holds, as a minimum, the name of the subject and the subject's public key along with the issuer's digital signature on the information. The rules we make for issuing, revoking and verifying of certificates and the entities that are being used to do so are called PKI - Public Key Infrastructure.

This thesis uses the ?What's the problem?-approach developed by Carol LeeBacchi. This approach studies how the problem that a certain policy is supposedto take care of is represented. Each representation will rest upon certainassumptions and will accordingly support certain solutions while other solutionswill be considered less suitable to the problem as it is represented.The thesis therefore evaluates the competing problem representations forgender mainstreaming in Sweden. The theory chapter explores two developmentpossibilities for gender mainstreaming, based on diversity and deliberativedemocracy.

The purpose of this investigation is to see if there is any difference in how long pupils are staying in the activity of the music- and culture schools in the country. I have compared this with how large the teachers engagements are in average at each school, how many teachers each school holds and if one teacher is teaching within different areas, e.g. on different instruments. Thru mail contact with the headmasters at the music- and culture schools I have gathered data concerning the length of which the pupils are staying at the schools, the number of teachers at each school, the size of the teachers services and in how many different areas each teacher is teaching.It has been hard to get to any results in the investigation since the music- and culture schools don?t compile statistics on how long their pupils are staying at their schools.

This Masters Thesis is about the Swedish National Council for Cultural Affairs and the arms length principle. The principle is used to explain the separation of power between two parts with a common interest. The main purpose is to elucidate if, and if so in what way, the arms length principle can be used to explain the relation between the National Council for Cultural Affairs and the Ministry of Education and Culture, i.e. the Swedish government, but also to examine the structures of power and relations within the Council. In the thesis we show that in the field of cultural policy the content of the arm lengths principle varies due to the many interpretations of the meaning.

Most of the sea areas within the European Union are overfished and the catches are estimated to be up to five times lager then the amount to achieve a sustainable fishery. In doing so, the management of EU's marine resources comes to be questioned. The purpose of this study was to analyze EU's administration of marine fisheries and to explore which steps that can be undertaken to counteract the negative trend. The questions of the study were: How does the EU administrate today?s marine fishery recourses? And: How can the problem whit overfishing be discouraged? To answer these questions a comparative analyses were used to compare and evaluate administrative systems.

The purpose of this study was to investigate what competence social workers have, don´t have and ask for in the work with unaccompanied children, how a lack of competence and guidelines has been compensated in the practical work and how the social workers view the future work with unaccompanied children. This has been done through eight semi-structured interviews with social workers who work with unaccompanied children. The result has been analyzed with help of the theoretical perspective globalization connected to social work and showed that none of the social workers felt not having the competence to work with the children. However, everyone mention one or more areas where they ask for competence development. The study showed that lack of education has been compensated through practical experiences, knowledge exchange with others and that guidelines now have been formed.

Sand pits are a valuable habitat which can hold many sand living species including several endangered ones. As many sand habitats with exposed sand are declining, sand pits have a potential as a substitute habitat. This study was conducted to see what effect the area of a sand pit has on species number and composition of ground beetles (Coleoptera: Carabidae). Also, the effects of other environmental variables were tested, for example the proportion open sand, vegetation cover, sun exposure and tree cover. The study was conducted in the county of Uppsala in 2008 and included 13 sand pits with areas between 200 and 180,000 m2.

Japanese encephalitis virus (JEV) is one of the leading causes of acute encephalitis in humans. The virus is spread by mosquitoes, mainly belonging to the Culex species. The main reservoirs are considered to be birds and pigs, with pigs constituting the most important reservoir in regard to human infection. During the last few decades the production of pork has increased significantly in Vietnam. With 90% of pigs being kept in households owning 10 pigs or less, pigs are widely spread across most parts of the country.

Hip-hop music has long been an expressive medium used by individuals from marginalized areas in Sweden to address social issues and shape their identities. Through interviews with Swedish hip-hop artists and analysis of lyrics, this bachelor thesis explores the self-expression of the artists and how they express their views of society. It focuses on how social problems are expressed and understood, as well as on how the artists view the depiction of contemporary Swedish hip-hop music in media. Additionally, the study investigates how hip-hop artists themselves perceive the significance of their music lyrics. Furthermore, I explore the impact of music on the identity of hip-hop artists from marginalized areas, as perceived by the artists themselves. To gain a comprehensive understanding, the ethnographic study employs semi-structured interviews and participant observation with four non-ethnically Swedish hiphop artists who live or have grown up in disadvantaged areas in Sweden.

Perfluoroalkyl substances (PFASs) are ubiquitous in the environment today and they have been detected even in remote areas such as the Arctic. PFASs can be transported by the atmosphere and ocean currents but the transport mechanism is not fully understood. PFASs may be harmful to organisms due to their persistence in the environment, bio-accumulation potential and toxicity. Studies have shown that PFASs can cause adverse effects on the metabolism as well as the endocrine- and reproduction systems in organisms. In this study, PFASs were investigated in glaucous gull (Larus hyperboreus) (n=5) and black guillemot (Cepphus grylle) (n=4) from Svalbard.

The aim of this paper was to investigate how 40 typical speakerswith Finnish accent, aged 65-84 years, performed in speech assessmentthrough Dysartribedömningen, a Swedish dysarthria assessment instrument.Their results were compared with results of a matched Swedish nativespeaking reference group. Both groups were assessed in areas offunction/structure, prosody/intelligibility and through a survey oncommunication. Results indicated that the performances of the Finnishparticipant group were estimated as more deviant than the Swedish,considering all areas. The Finnish participants were deviant in articulationand they had a significantly lower speech rate in reading. They also hadsignificantly lower scores in intelligibility compared to the reference group.The results of the survey of communication showed that the Finnishparticipants estimated their levels of activity and participation to besignificantly more limited compared to the reference group.

The purpose of this study is to investigate if there is enough consideration taken to sensitive forest areas close to water or wetlands during clear cutting assignments, and to estimate the extent of damage made by forestry machines used at that time. A field and literature study is used to show how to improve and prevent the damage made in the wake of the machines. This study is made for Sydved, and shall culminate in a policy to prevent ground damage during their clear cutting assignments. The areas which were part of the field studies were clearcuttings on fine grained soil close to water and wetlands. The purpose was to find out if the water had been affected, what had been done to prevent ground damages and what more could have been done. The results of the field studies show that more work needs to be done to reach up to expectations. More information about the assignment area, better planning of sensitive regions, and strengthening of the main haul roads with brush are some of the improvements that can be done. There is also a need for more exact guidelines, follow-ups and education for everyone involved to have the same goals and understanding to prevent ground damage..

The aim of this report is to describe the deglaciation in an area on west Greenland in the vicinity of Kangerlussuaq. To do this, the geomorphological landforms were mapped by studying areal photographs and by a two week field study where key areas were examiend. The landforms were transferred to a map using ArcGis and each key area were interpreted.The majority of the geomorphological formations were formed during the last deglaciation and consists of morain ridges, kettle topography in both till and glacifluvium, glacifluvial deltas, two fossil sandurs, and lateral terraces. Based on key areas and an inversion model a geomorphological map was created to illustrate the deglaciation, using the least complex explanation of the genesis of the landforms. The results show that the ice played a major role by damming lakes which enabled formation of many meltwater chanels and delta formations on higher elevations.

AbstractMy study is about working memory and working memory abilities for children with concentration difficulties. I have looked at literature and current research. I have also done an interview study on three pedagogues who have experience of the problem area.The conclusion I can draw from my investigation is, when it comes to working memory and what children with concentration difficulties can have problem with, is often shown when instruction is given in several stages and when the child come to the last instruction they sometimes have forgotten what the first instruction was. Special questions, image, image schedules and written instruction can help the child to remember. I also found that the pedagogues not only looked at working memory, but they also examined how the child hear and see, therefore they look at the ability of how the child notice what they hear and see and how they use it in their every day living.

Abstract:I studien undersöks hur myndighetspersoner upplever att samverkan fungerar, samt vad det finns för likheter samt skillnader på samverkan i Uppsala respektive Östersunds kommun. Dessa aktörer är betydelsefulla i arbetet med våldsutsatta kvinnor, därför är det en viktig förutsättning att ta tillvara varandras kompetenser för en god samverkan. Ämnet våld i nära relationer är fortfarande nytt för socialtjänsten, vilket gör att det finns bristande kunskap i arbetet för våldsutsatta kvinnor. Detta är en kvalitativ studie som är grundad på semistrukturerade intervjuer, respondenterna till undersökningen arbetar på socialtjänsten och kvinnofridsverksamheter. Resultatet i studien kan sammanfattas med att samverkan mellan verksamheterna och organisationerna är nödvändiga och att samarbetet leder till bättre insatser samt förutsättningar i arbetet med våldsutsatta kvinnor.