To render outdoor scenes with lots of vegetation in real time is a big challenge. This problem has important applications in the areas of visualization and simulation. Some progress has been made the last years, but a previously unsolved difficulty has been to combine high rendering quality with abundant variation in scenes. I present a method to mathematically generate and render vegetation in real time, with implementation in the scene graph Gizmo3D. The most important quality of the method is its ability to render scenes with many unique specimens with very low aliasing.

The purpose of this study is to investigate the teachers? described experiences of advantages as well as disadvantages of Arne Trageton?s write to read-method (?ASL?) in contrast to the code-oriented traditional way of teaching. The aim of this study is furthermore to depict the teachers? opinions on whether they experience that the ASL-method is unfavourable for students in general. This study will also investigate the teachers? standpoint regarding choice of reading and writing method.

The purpose of our study is to examine whether stress among social workers is present, and ifso, what strategies they and their supervisors use to manage work-related stress. The study isbased on a qualitative method. The data consist of interviews, with six social workers andthree supervisors. The study?s theoretical framework is based on KASAM, SOC-sense ofcoherence by Antonovsky, demand- control- support model by Karasek & Theorell, stresstheory by Hans Selye and coping strategies by Lazarus.

The title of the paper aims at a comment by one of the students during an interview. It reflects how most of the students experience the lunches in a specific school where the investigation is made. The question of pedagogical lunches has always interested me. Here I have used a method called the Grounded theory. I carried out a qualitative investigation with a number of methods such as interviews and participating observations.

Title: What is violineurhythmics? Students' and parents' thoughts and reflections about violineurhythmics. The purpose of the investigation is to present students' and parents' thoughts and reflections about violineurhythmics. Data consists of qualitative interviews with students and parents who experienced the method during the last years. Violineurhythmics can be seen like a genre of the method of the rhythmic.

This report contains a study of replacing nuclear power with biofuel. The nuclear plant, OKG north of Oskarshamn in Sweden has been chosen and an extensive literature study about the nuclear plant has been implemented. The main aspect of this report is the availability of biofuels and whether it would be economically sustainable. Sweden?s most common biofuels are examined with regard to scope of use and potential.

Biogas is a gaseous fuel, rich in methane, produced through a biological route in an anaerobic digester. A gas engine generates combined heat and power, which can be used at the farm to reduce energy cost. The process also generates a digestate, with better utilization of nutrient compared to cattle manure. The aim of this study is to analyze the profitability of a farm-scale biogas plant for combined heat and power (CHP) at Wapnö. Wapnö is an agriculture company located in the southern part of Sweden.

The purpose of this thesis is to describe the work process and the results of our work with developing a web based auction system for students at Linköpings University. The present options open for students to sell objects within the University is limited to a billboard that doesn?t support bidding. Because of that a system was developed to offer an environment where they could present there objects and let demand set the final price level. A new function in this process is the option of alternate ways to end an auction with the intention of eliminating some of the problems that exists within the currently available web based auction systems with last second biding..

Every year, 12,000 people in Sweden are diagnosed with aphasia. Many people with aphasia supplement their logopedic treatment by participating in an aphasia group. Aphasia groups provide both social and linguistic stimulation. The aim of the present thesis was to study the social interaction between participants, and between participants and leaders in aphasia groups.In the present study, eleven persons with aphasia and four leaders participated divided into three aphasia groups. The groups were video recorded during sessions with a total of four sessions.

The aim of our research in this study, which has a qualitative attempt, is to investigate participation concerning to a few co-workers in the old-age care. The co-workers experience of participation and their definition of participation, and how participation is related to our different themes. Our themes are the present and wanted assumptions, to make participation possible. Further more does this study discuss participation in relation to the themes communication, competence education and to physical and psychic health. The method we used was primary semi-structured interviews and some observations.

This report describes the planning and the accomplishment of the final diploma workat the study program Mechanical Engineering, Department of Engineering Sciences, Uppsala University. Two students carried out the diploma work at GE HealthcareHusbyborg in Uppsala.The aim of the diploma work was to develop and improve existing processequipment for 11C-radiochemistry in PET. The process equipment was to be dividedinto smaller independent modules to make it more flexible. Part of the existingprocess equipment is an oven that is supposed to perform a specific chemicalreaction. One of the main goals was to study and improve this oven.The work could be divided into three main phases: 1.Present concepts for one module, and interface between different modules.

The purpose of this study is to examine the importance of a working laboratory in mathematics education, how it influences students? learning and the confidence the teacher has in the laboratory component. Focus has been placed upon the advantages and disadvantages that could follow in the working method.The method used in this essay is qualitative in order to answer all the questions that arise along the way, and in order to use this method in interviews. The interviews that has taken place has been with five class teachers that are currently teaching at a elementary school between the years of 1-5. The purpose of this study has been answered by using its literature and the qualitative method with the class teachers.The results of the research show that teachers express gratitude towards the method in use for mathematics studies.

Semantic feature analysis (SFA) is a treatment technique used foraphasic word finding difficulties after stroke. The method has earlier beenevaluated with positive outcome regarding words that have been trainedduring intervention while more varied results have been presented regardinguntrained words. The aim of this study was therefore to evaluate the effectsof the method on naming in untrained nouns and verbs, in both confrontationnaming and in discourse. The present study is the first to evaluate SFA withSwedish-speaking persons. A single-subject design was used.

In this report I will describe how an art-directed fluid effect for motion picture can be achieved. This effect will be an explosion with a visual style that is congruent with Pixar's movie Up. To begin with I will analyze the visual components that are used in Up and control the fluid simulation to get the desired visual style. I will briefly explain the background of my thesis, why it is interesting to create designed effects and why it is hard to design fluid effects. In the method I will explain my work process and some of the challenges that arises.

This report describes the planning and the accomplishment of the final diploma workat the study program Mechanical Engineering, Department of Engineering Sciences, Uppsala University. Two students carried out the diploma work at GE HealthcareHusbyborg in Uppsala.The aim of the diploma work was to develop and improve existing processequipment for 11C-radiochemistry in PET. The process equipment was to be dividedinto smaller independent modules to make it more flexible. Part of the existingprocess equipment is an oven that is supposed to perform a specific chemicalreaction. One of the main goals was to study and improve this oven.The work could be divided into three main phases: 1.Present concepts for one module, and interface between different modules.