The Master Thesis work this report is based upon has been conducted in cooperation with Svea Teknik AB. Svea Teknik is a consultant firm which is developing parts of a Tunnel boring machine on behalf of Atlas Copco. The machine is being developed to mechanically excavate hard rock by fixating itself in the tunnel and then press a large rotating cutter-wheel equipped with disc-cutters against the tunnel wall. The disc-cutters are the tools that are in direct contact with the hard rock and are therefore exposed to extensive wear and needs to be replaced on a regular basis.The purpose of this Master Thesis has been to develop a service equipment that will enable time effective and safe changes of disc-cutters. The disc-cutters have a diameter of 17 inches and weigh about 130 kg.

The aim in this essay is to investigate students? attitudes to homework in grade six, and closerstudy the attitudes of the students who think homework is difficult and boring. I have chosento investigate and find out why homework is perceived as boring and cumbersome for somestudents in sixth grade. I hope to identify the aspects that contribute to the negativeconsequences that arise in connection with the homework. The following questions are usedto make the study: Do some students experience homework as boring and difficult? Do somestudents get any form of support at home, if so, how do students perceive the support fromhome? How do students feel that homework affects their leisure?What is the reason that the homework is perceived as difficult and boring according to thestudents? How should the shape of homework change according to the students who believethat homework is difficult and boring?I have chosen to do the study with older students who have more experience with homework.I used both qualitative and quantitative methods, those are interviews and questionnaires.

I have in this thesis looked at the reasons for why boys, in upper school classes, read so little fiction. Several surveys show that boys in their teenage years stop reading fiction. If they read fiction it is only as a school assignment and not as leisure. There has been research done in boys attitude towards literature, but there hasn?t been any research done asking them about why they don?t read fictionI have interviewed a group of boys about their reasons, and attitude, for why they don?t choose to read fiction on their spare time after school.

Abstract (in English)The work that lead to a CE- marking and the creation of a total drawing foundation on an existing machine carried out on the company Polytec Composites Sweden AB in Ljungby. The company have design an machine that exist in six example that runs in the production. To be able to use the machine the company have to work out a CE-marking. The process that summed up all the document that needs for the machine to make a CE-marking. The documentation includes a total drawing over the machine and a risk analysis performed by a group employers on the company.

Resignations are common in all business sectors and can also be found among forest machine operators in the forest business. As the industry today faces a lack of forest machine operators it is justified to determine why machine operators choose to quit their jobs. The aim of this study was to a) find out the number of machine operators that have resigned b) identify and analyse the cause for these resignations c) identify the reasons why the machine operators started to work in the forest and d) give suggestions on different measures that will limit resignations amongst forest machine operators. A questionnaire was sent to machine operators who have quit working as employees, contractors or as employees for contractors with Holmen Skog during 2003-2007. 32 machine operators responded to the questionnaire. Interviews were made with 10 machine operators who had answered the questionnaire to gather more qualitative data. The results of the study indicate that fewer forest machine operators change profession than employees in other occupations in Sweden.

The purpose of this Master Thesis has been to investigate the possibilities for a new type of noise reduction solution that could decrease the negative effects resulting from larger traffic roads. The idea has been to construct a noise barrier with a roof ? like a tunnel placed on a road. The choice of material has been focused on transparent materials in order to lower visual intrusion and barrier effects. This project idea is called the Noise tunnel.After having investigated the current offer of noise solutions, it has been concluded that these solutions rarely provide a sufficient level of noise reduction ? at least not when government regulations of acceptable noise levels are applied.

Our greatest interest within crop farming is to grow sugarbeets, that?s why we want to write about something new in this sector. We heard that a new concept had come to Sweden so we wanted to find out everything about this machine. This new technique was a self-propelled cleaning loader for sugarbeets. This machine is supposed to replace a loader and a cleaning machine when the sugarbeets is going to be loaded, cleaned and delivered to the sugerbeet factory. The cleaning loader picks up the sugarbeets with rollers from the pile, which is placed close to the road.

Today there is no way of measuring or simulating turbulent flow in high Reynolds numberenvironments. The computational power required to simulate these conditions is not expectedto be available for several decades so instead the CICLoPE project aims at solving thisshortage by the construction of a long carbon fiber wind tunnel in which real measurementscan be made. To do accurate measurements it is of importance that the wind tunnel, 0.9 metersin diameter and 110 meters long, is as straight as possible.This master thesis treat the design and construction of a device which may be used to align thetunnel along a reference laser beam. A design is presented which allows the pipe to be alignedwithin about a quarter of a millimeter along its entire length. Contents span over severalscience fields such as physics, mechanics, control theory and electronics.The result is a theoretically correct design.

AbstractWe have been honored to work with a company called Frimeko AB. Frimeko is located in Halmstad where they make and sell furniture for school and office environment. Our task is to construct a new, more modern sewing machine table for schools. The task is to use the same function as before, ease the storage and production of sewing machine.Efforts to develop the new sewing machine table resulted in that we came up with an innovative design that the company is pleased with.During this project the group has used the method from ?Fredy Olsson Konstruktion? .

When harvesting ley you hope to get a fast drying and a faster harvest. If there is a system with round bales, you need to have a dry matter close to 45 %. To make this as fast as possible, there is made a machine which pick up the grass with an pick-up. It turn the grass over and put it behind the machine (figure 2 and 4). There are few tests to prove the efficiency of this machine.

This study has been performed with the help of forest machine operators in order to improve the forestry planning at Holmen Skog Örnsköldsvik-region. For Holmen Skog forestry planning is basic for a successful forestry. In a survey I have investigated what can be improved in some areas that are planned for harvesting. The result of the investigation will be used to support the machine operators as much as possible. The study has generated 49.5 % of responses and because of this low response rate, no clear conclusions to anyone else except the responding machine operators can be drawn. It has been proved that there are some details in the forestry planning system that are inadequate, such as marked routs for trails, tractor paths and buffer zones against streams. The quality of forestry planning varies greatly between different locations, as much as 50 % of the responding machine operators thought so. Over 40 % of the responding machine operators claim that the information from Holmen is insufficient. One thing that would improve the forestry planning within Holmen would be to educate all forestry planners and then do continuous follow-ups..

Deposits can be formed in the paper machine due to sticky materials from wood and recycled paper. These deposits get stuck on process equipment and cause the product quality to deteriorate and the efficiency of the paper machine is reduced. The purpose of this thesis is to increase the understanding about deposits among machine operators, and to suggest methods that can be used to reduce the amount of deposits formed in Bravikens paper machines.To fulfill the purpose of the thesis a pre-study, a literature review and interviews with machine operators and production staff, were carried out. These methods led to the planning and creation of an education about deposits for machine operators.The education about deposits for machine operators consisted of an interactive lecture to introduce the subject of deposits and a subsequent discussion. This approach was chosen to give the machine operators the opportunity to discuss their work situation on the paper machines related to their new knowledge about deposits.

There is a need for productivities data and data for different types of machines for comminution of logging residues. The lack of data and studies on GROT comminution makes it difficult to evaluate different chains for handling of residue fuels and make system analyses.Four types of machines with three different working principles were compared at six studies during winter conditions. Three to eleven trials during 9.5 to 30.7 minutes were made on each machine. Samples from the produced material at each study were sieved to determine the size distribution of the comminuted material. Samples were also taken from the studies for determination of moisture content.

AbstractThe purpose of this study has been to find out what attitude fifth graders have towards mathematics. This is done to get a better understanding of student?s feelings regarding about mathematics and what it is that makes mathematics fun or boring. My questions have been: What do the students think is fun, boring and difficult about mathematics? How do students think that a good mathematics teacher should be? Do the students see a difference in the mathematics teaching in easy compulsory school years?To find answers to my questions I have looked into prior research on students attitudes towards mathematics.

The comprehensive goal in this study was to examine important factors in an introduction of a new machine team. The aim was to identify what elements should be part of an introduction program for new machine team. The examination was done together with Stora Enso Skog. A new machine team and their supervisors where analyzed during a six month period. The evaluation was done with open interviews of the team members and their supervisors. The main question was what should be included in an introduction program to develop a successful machine team as effective as possible? Interviews of the new team and analyses gave good indications how the procedure should be done.