This master thesis has been done in cooperation with Sweco Viak AB in Sundsvall. The aimwith the project is to investigate the purifying effect of percolation filter due to iron andmanganese. The overall goal was to investigate how the parameters surface load,sandfractions, and burden time affect the purifying effect. The expectation is to optimize thedesign and find a demouldning of the filter that gives sufficient purifying with a highersurface load. As an attempt to accelerate the curing of the filter, experiments with a layer ofsand which surface has been covered with manganese ore (MnO2) on top of the filter havebeen done.As test filters 10 L bars were used and the experimental work was performed at thewaterworks in Hassela and Munkbysjön.In Hassela different sandfractions were tested.

IT utgör en stor del av majoriteten av folks vardagliga liv. Smartphones och surfplattor har om möjligt ytterligare ökat vår användning av tekniska enheter och prylar på en daglig basis. Arbetet tas med hem i en större grad med hjälp av laptops, VPN och molnmöjligheter. Mail kan tas emot i princip var och närsomhelst på dygnet. Men hur bra är säkerheten? På arbetsplatsen hanteras mycket av IT-säkerheten och ansvaret för den ofta av erfarna och dedikerade anställda, men hur ser det ut hemma där användaren själv har ansvaret för sin IT-säkerhet?I denna studie analyseras och identifieras risker och problem vid hantering av olika aktiviteter relaterade till IT-säkerhet i hemmet.

The project is a practical and theoretical test of IP telephony with Skype in order to form a base for a comparison between IP-Telephony with Skype and the Public Switched Telephony Network (PSTN). PSTN is the common standard that most of us use for telephony today. The objective for the study is to simplify the choice between PSTN and IP-Telephony for the Swedish private customer user group. The project is supposed to answer the following questions. - How easy is it to start using IP-telephony with Skype? - How is the quality of IP-telephony compared to PSTN? - Are all services provided by PSTN available and accessible using the IP-solution? - How are the usability and the availability of support with IP telephony? - Is IP-telephony a cheaper solution and in that case under which circumstances? Within the project a collection of practical and theoretical tests have been performed to be able to form an opinion on the IP-solution in the following areas, installation, function, quality, usability, costs, accessibility and security.

The aim of this paper is to analyze and problematize the content in the teaching media Känslan för ord through an integrative perspective. This is done by using two sets of questions based on two of the didactic questions what and how. How is the content of the Swedish subject constructed in Känslan för ord? and How is this content integrated in Känslan för ord? The used material consists of a fairly large amount of literature which provides different approaches, priorities, and methods about the Swedish subject. This literature forms the base for the model used to analyze the course books.The results are based on an analysis of the exercise culture (uppgiftskultur) in the two books and are extensive.

The aim with this independent degree project of master thesis is to find what the user opinions of the intranet in a county council is. The paper seeks how the question about how the culture in the organisation was affected by the use of the intranet. An important part is to explore the expectations and acceptance of the intranet and get a picture of which functions and services support day-to-day work with good quality. One goal is to find out how the intranet users feel that the communication, information and usability can be developed.The focus group interview is a qualitative method that has been applied for gathering data from the respondents, who participate in the investigation from the county council. The used method is unstructured focus groups containing the three dominating categories of staff in the county council.

The main purpose of this bachelor thesis is to create a product in the form of a database that can be used for cost estimates of equipment within bio refineries. Through interviews and literature searches the key components and their costs were identified. The database was constructed in Microsoft Excel with different tabs for different categories of components; these tabs are further divided into three parts: one part with costs, one part with calculations and an information part. Most of the part with costs contains the expenses found in scientific papers during the literature study, the calculating part converts different capacities according to user preferences and the currency to euro (?) from 2010 and the information part consists of references and information about what is included in the cost.The database is a good tool for making cost estimates for bio refineries.

The main purpose of this bachelor thesis is to create a product in the form of a database that can be used for cost estimates of equipment within bio refineries. Through interviews and literature searches the key components and their costs were identified. The database was constructed in Microsoft Excel with different tabs for different categories of components; these tabs are further divided into three parts: one part with costs, one part with calculations and an information part. Most of the part with costs contains the expenses found in scientific papers during the literature study, the calculating part converts different capacities according to user preferences and the currency to euro (?) from 2010 and the information part consists of references and information about what is included in the cost.The database is a good tool for making cost estimates for bio refineries.

This paper is a research review in the realm of censorship systems andfiltering systems. It applies ethical considerations to the creation of censorshipsystems bringing forward discussion on the ethics of technology with thepurpose of limiting access to information.There is active research being done in the area of automatic content filteringand censorship systems. These are systems that can filter out undesiredmaterial, typically from the Internet, automatically. Used in some nations,many schools and even mandated in some libraries there are many ethicalquestions raised concerning censorship and access to information.Part of the review concerns the level of accuracy of these systems presentedby researchers in the field and the different approaches used. Reviewedarticles centre around automatic content classification and filtering ofpotentially harmful materials with regards to minors while some relate tocensorship technology in a wider sense.Results show a general lack of discussion concerning the ethics of thetechnology in the research reviewed.

Several radioactive nuclides were deposited in Sweden after the Chernobyl accident in 1986. The greatest attention was given to 137Cs because of its relative long physical half life of about 30 years. 137Cs will be present in nature for more than 100 years before it has vanished completely. When radiocaesium decays to a stable end product ionizing radiation is emitted, which can cause cancer in humans that has been exposed to a high radiation dose. Radiocaesium behaves like potassium and is easily taken up into biological systems.

?Facebook has become as natural as having a phone? The use of social media in three libraries in the Umeå region ? an evaluationSocial media has come to be an integral part of people?s everyday life, as well as the business world in terms of communication and marketing. More and more libraries also embark in the use of social media, and the purpose of this study is to evaluate the use of social media in three libraries in the Umeå region. The libraries all use Facebook as their current, primary social media. Thus this study focuses partly on the analysis of the content on each library?s Facebook page, and partly on the experiences of the responsible librarians. The evaluation is based on a mix of existing tools in evaluating social media that are relevant in a library context.

TeliaSonera har sedan ett tag tillbaka inlett ett projekt med ett antal företag inom byggbranschen. Projektet går ut på att ta fram kontrolltekniker som kontinuerligt mäter en byggnads tillstånd genom hela dess livstid, så att eventuella brister kan upptäckas innan de blir till ett problem. Med andra ord är tanken att ha någon form av teknik som kontinuerligt avläser diverse egenskaper i en byggnad som exempelvis fuktighetshalten i väggarna, om ventilationen fungerar som den ska och halten av olika ämnen i luften.Det praktiska syftet var att verifiera om trenden kontinuerlig kontrollmätning efterfrågas genom att ta kontakt med branschexperter inom såväl byggbranschen som vissa andra parallella branscher och se om även de uppmärksammat denna. Under antagandet att de gjort det, var intentionen vidare att försöka urskilja de så kallade lead users. Lead users är användare vilka erfar behov före marknaden som helhet samt som är benägna till att vara innovativa, då en lösning på deras behov förväntas medföra stor nytta för dem.

This thesis investigates in which way principles and theories of usability is revelant when evaluating interactive systems for children aged 10-12. It also investigates whether there are specific factors that you should keep in mind while developing interactive products for the targeted group.The results of the qualitative study shows that priciples and theories of usability is relevant when evaluating interactive systems for the targeted group. However there is one concept that is more significant than the others. Our study shows that our targeted group is sensitive to time-consuming activities such as loading times etc. which has to do with the efficiency of the system.

This thesis evaluates the user board of the elememtary school in Veberöd, Sweden. In this process an evaluation model is developed. The model itself gets evaluated in a meta-evaluation to improve the model for future use.The starting point of the evaluation is the deliberative democracy theory. Although Sweden is a representative democracy an official desire exists to have a democracy with deliberative qualities. The evaluation model is constructed to fit this context and is therefore, not only, set out from classical goal-based evaluation but also from deliberative democratic evaluation.

This bachelor thesis is titled Who is an extremist?  - A qualitative content analysis of the agglutination of right- and left-wing groups and is written by Måns Hoffsten within the discipline of political science. This essay aims to illuminate in which way the Swedish government has tackled extreme forms of left-wing and right-wing activism during the period 1980 ? 2013. By looking at how governmental policy-suggestions and reports concerning extremism are formulated during this period this essay explores when and how the two groups first started to become a part of the same problem-representation and on what premises this is built.

The purpose of this Masters thesis is to investigate if gender stereotypes are mediated to children between 0-3 years through books suitable for their age. This thesis concerns books that are available in public libraries. The content will be analysed by using a combination of methods, both content analysis of all the books in our study and a qualitative analysis of a smaller number of these books. With inspiration from both Robert Connell and Yvonne Hirdman and their theories of gender and gender stereotypes, this material was read and we wanted to examine if books for very young children might establish stereotypes. Our analysis showed that many known stereotypes are common in these books.