In nature there are about 4,500 minerals identified. These can roughly be divided into two groups, opaque phases and non-opaque phases, with the exception that some opaque phases also may act as a non-opaque phase in different circumstances. The division is made on the basis of the optical properties. Opaque phases are nontransparent, which means that a different type of microscope must be used. A conventional microscope uses transmitted light while the microscope for opaque phases or the ore microscope uses reflected light.

The paper examines Philosophy with children as a pedagogical method for schools to practice. The questions I have posed are:Why philosophize with children and teenagers?How does Philosophy with children work?What, in the organized structure of the philosophical inquiry, can be emphasized as favourable for learning?How carefully is the structure of the philosophical inquiry really followed in practice?How can philosophy be applied as a pedagogical model?The theoretical framework of this inquiry consists of a discussion about a thirst for learning that exceeds the explicit and direct usability that motivates vocational training.I have used two different kinds of methods. The main method is a literary analysis of some of the literature in this field. This analysis is compared to field observations of children participating in communities of inquiry in school.The basic assumption is that practicing the ability of philosophical thinking can help children develop a more profound way of understanding who they are and how the world in which they exist works.

Då dagens samhälle mer och mer styrs av någon form av informationssystem, ställs det också krav på att medborgarna numera även ska kunna identifiera sig i den digitala världen. Samhällskritiska tjänster som adressändring, bankärenden och deklaration har förflyttats in i den digitala världen i besparingssyfte då företag och verksamheter söker effektivare och mer lönsamma lösningar för dess verksamheter, och säker identifikation blir således viktigt för framtidens handel via elektroniska tjänster. Det är inte bara själva identifieringen som är av vikt för processen, utan även hur en identitet kan säkerställas på så vis att det verkligen är rätt person som döljer sig bakom den elektroniska identiteten. Utifrån detta ämnas denna rapport påvisa huruvida det faktiskt finns någon användbarhetsrelaterad problematik med den nuvarande e-legitimationen.För att ge svar på den forskningsfråga och uppfylla studiens syfte kommer en deduktiv ansats att antas i rapporten. Denna ansats sker med hjälp av enenkätundersökning med både kvantitativa såväl som kvalitativa inslag, och slutligen utmynnar detta i att forskningsfrågan besvaras..

The aim of this study is to get a deeper understanding about user tests as well as answer the question about if testing for users is necessary at all times. I've done a comparison between what the literature says, and what a company says, about testing. The tests that's been in focus in this study is prototyping and card sorting tests. Prototyping aims to give the developer feedback about the design and check if there are any obvious problems with the design. A card sorting test can be used to get input about how information architecture should be constructed.

Facebook has over 665 million users worldwide and has created a new venue for companies to interact with their stakeholders. However, since it is a new phenomenon it brings some uncertainty and confusion as how to manage the communication on Facebook, and it is only recently that research and literature has become available on this topic.The purpose of this study is to investigate how three chosen companies within the travel industry communicate on Facebook. We also compare the results to the existing literature to see how they can improve from a theoretical point of view. We thereby hope to shed a light on, and add knowledge to, a research area where we have identified weaknesses. In order to fulfill our purpose, we used a quantitative content analysis as well as qualitative interviews.The major findings in our study on Facebook communication include a lack of strategy and target audience awareness, as well as a self-centered communication.

This exam report has been developed in association with Strangbetong AB, Sweden.The natural gravel that is being used as fine aggregate for concrete production today is an ending natural recourse and the Swedish government has decided to strongly reduce the extraction from the year of 2020. The only reasonable replacement is aggregates from crushed rocks but this material has other properties than natural aggregates. The concrete manufacturers now have to learn how to use these new fine aggregates in a cost effective way in order to ensure the quality of their concrete production.In this project, crushed aggregates and combination of crushed and natural aggregates have been tested with existing formulas for fresh concrete. The two parameters yield stress and plastic viscosity have been measured which gives a good description of the workability of the fresh concrete. Different methods to make measurements on the dry fine aggregates, has also been tested, to find out if there is any correlations between these parameters and the parameters from the measurement on the fresh concrete..

IKEA HaparandaTornio employ some two-hundred people in its furniture retail store.Keeping track of staff statistics and employee information has previously been achievedthrough the use of a basic Microsoft Office Excel spreadsheet. The store?s human resourcesdepartment requested an upgrade to this system with the hope of speeding up andsimplifying the administrative process, as well as to make it easier to monitor HR-relatedtarget statistics. The following report documents the development process of that upgrade ascarried out by the author. The project draws on research in usability design and cognitivepsychology to develop a user-friendly interface.

This thesis concerns partial discharges in stator windings and the possibility of analyzing data using statistical methods. Partial discharges, or PD, are a physical phenomenon in which discharges occur locally due to large electric fields. PD can occur in or adjacent to the insulation of stator windings and causes breakdown of the insulating materials. PD measurement can provide an idea of how widespread the PD activity is. A technique to measure and analyze PD that has become very popular over the last few decades is phase resolved PD patterns.

Detta examensarbete har haft till syfte att åskådliggöra eventuella skillnader och/eller likheter i den upplevda användbarheten vid användandet av en webbplats skapad via mobile first design och desktop first design. Målsättningen med examensarbetet har varit att ta fram en hifi-prototyp, skapad utifrån mobile first design, som visualiserade ett designförslag för flygfotoföretaget HimlaFotos startsida. Jämförelsen har utgått ifrån en egendefinierad version av begreppet användbarhet baserad på ISO:s definition, där användbarhet består av tre faktorer; kraftfullhet, effektivitet och tillfredställelse. För att samla in data om den upplevda användbarheten har användartester genomförts. Flera likheter har identifierats gällande användbarhetsmåtten kraftfullhet och effektivitet, medan skillnader har funnits vid måttet för tillfredställelse.

Six different Digital Proofing Systems from three different techniques have been evaluated as totechnique, printing quality, economy and usability. Digital proof from two paper qualities, coatedand uncoated, has been compared with references printed in offset, to see how good they match eachother. Only two Proofing Systems manage to print on reference paper. The other Proofing Systemsuse special paper for digital proof.Measurements and visuell judgement show that the Digital Proofing Systems visualise referencepictures with quite good quality. Proof optimised for coated paper visualise the colours with goodresult.

To be able to plan different treatments, accurate data is required. The collection of data is often expensive and that?s why the aim is to lower the inventory costs without loosing the accuracy of the data. Holmen Skog has in its strive to lower the costs, decided to evaluate two different methods for forest delineation, computer aided forest delineation and digital stereo view. This study?s purpose is to evaluate these two methods in regard to usability for a beginner and how good the delineation gets.

The commercial real estate market makes up a large part of Sweden's property portfolio, as well as other open, free markets in the real estate market it is regulated by supply and demand. There are several factors that affect the supply and demand in the commercial real estate market, for instance the price, type of real estate and the condition of the real estate. In order to achieve success in the commercial real estate market it requires that real estate agents have a certain expertise and flexibility in their thinking to adapt commercial real estates to supply and demand. Active investors on the commercial real estate market are for instance private real estate agents, their knowledge and experience will help increase the value of commercial real estate in the long run. In order to provide the market flexibility in its real estate portfolio, vacancy is a factor that can be used.

This paper shortly describes the coronavirus family, bovine corona viruses (BCV) properties and two diseases that BCV causes, winter dysentery and calf diarrhoea. The purpose of the study was to compare different diagnostic methods to detect BCV. Different methods are discussed, PCR, ELISA, immunofluorescense and virus isolation. Investigations were made in three different herds with winter dysentery; one dairy cattle farm with about 100 cows of different ages, one testing station for bulls with about 150 bulls and another small dairy cattle farm with 26 cows and 20 replacement heifers and calves. Faeces and nasal swabs were analysed with PCR and ELISA. The result shows that PCR seems to be a reliable method for detecting BCV but that the ELISA test can not be used as a reliable diagnostic method to analyse samples from animals with winter dysentery..

In this report a study is carried out with the aim to identify added values of EPC projects implemented in schools in order to increase the interest of EPC projects on the market. The report examines how the planned maintenance, supervision, maintenance and corrective maintenance is affected, how insurance premiums and terms are affected, the indoor environment and how the tasks of the operating staff is changing. A literature study of energy savings, energy use in schools, maintenance and insurance as well as how energy efficiency improvements are related to the Swedish environmental objectives has been made. Visits were carried out in Ludvika, interviews were also carried out with operation technicians and local strategists in Ludvika as well as employees of insurance companies.Schools often have neglected maintenance and problems with ventilation and indoor environment. Schools also have a large energy saving potential due to their low utilization, mainly because they are empty parts of the year.

Noise is a growing health problem. People are not always aware of the injuries that noise can cause. The media culture of today has a big influence on teenagers. This is caused by portable music players, computers, concerts etc. The schools are having larg classes and that can cause a lot irrelevant speech during lessons.