The aim of my study is to investigate how last year students in upper secondary schoolunderstand certain mathematical concepts, in particular the unit circle and its trigonometry.I have used intentional analysis to interpret student?s actions when they solve certain tasks onthe basis of a cognitive, situated and cultural context.Interviews with four university teachers in mathematics about the unit circle, trigonometry,and mathematical understanding, serve both as background for the study and as basis for adiscussion, where I relate students understanding to what the teachers want new students toknow about these concepts when they begin university studies in mathematics.The students were arranged in three groups with three students in each group. Each group waspresented with two tasks, one in which they were asked to calculate the cosine values for onepointed, one blunt and one straight angle, each located in a separate triangle. They were alsoasked to decide whether the points (0,71; 0,71) and d (1 2 , 3 2 ) are located on the unit circleor not.My conclusion is that students mainly have an operational conception of the unit circle andtrigonometry. The lack of structural conceptions result in difficulties in seeing connectionsbetween the concepts in unfamiliar situations.

Subject: This paper is about Brand Extension and if the process differs when a company extends its brand from a service to a product in comparison to an extension from a product to a product. As an example we have analyzed the mobile phone business and the mobile phone operators who launch their private branded mobile phonesPurpose: The purpose of this paper is to analyze how companies use brand extension from service to product as a part of their brand extension strategy.Method: A literature study was done in the brand extension area, but also in the area of brands to have a deeper understanding for the subject. A qualitative study with interviews was combined with a quantitative survey study. On the basis of the theories we could analyze the collected data and fulfill the papers purpose. Results: Important features and differences in services and products were identified and the importance of a strong brand identity before an extension.

The Ericsson R380 is a so-called smartphone, combining an advanced mobile phone with a Personal Digital Assistant (PDA). To evaluate the usability of the Ericsson R380 and benchmark it against the Nokia 9110 Communicator and the Motorola A6188 Accompli, a repeated measurements experiment was performed. 18 subjects (10 men and 8 women) with no previous experience of any of the interfaces participated. Half of the subjects had extensive experience from using Ericsson mobile phones and half of the subjects had extensive experience from using Nokia mobile phones. A set of 9 tasks to be solved on each interface was presented to the subjects.

Mobiltelefonen är ständigt närvarande i vår vardag. Den är ett kraftfullt verktyg som hjälper oss med allt från att surfa på nätet till att kolla när bussen går eller att betala räkningarna. Den har också gjort att vi kan dela med oss av våra liv och hålla kontakten med våra nära och kära var vi än befinner oss. Kort sagt har den ändrat hur vi beter oss i de flesta situationer. Men alla dessa ändringar är kanske inte lika positiva.

Asymptotically flat spaces are widely studied because it is one natural way of describing an isolated system in general relativity. In this thesis we study what happens to the Lanczos potential at spacelike infinity in such spacetimes. By transformations of the Weyl-Lanczos equation, we derive expressions for the limiting equations on both the timelike unit hyperboloid, and the timelike unit cylinder. Finally the Newman-Penrose formalism is used to get a component version of the equations..

The purpose of this study is to describe and analyzes how the bookmobile librarians approach to purchase and selection and the range of views that may exist. The study is based on a qualitative method using a document study and three interviews included. The document study looking closely at public libraries library plans in Vastra Gotalands county. The qualitative interviews gets a closer look at librarians´approach regarding the purchase and selection and also if there are any similarities or differences between mobile library activities versus the main library.The theoretical framework is based on Sanna Taljas study where she has identified three different perspectives on the library´s music department. These are categorized as the interpretative repertoires and involves three categories of approach to quality.

The aim of this paper is to investigate to what degree the groups in our inquiry work independently. It is a qualitative research, which points to a well?functioning unit, that by definition is not self-governing, but has many traits of self- government. We have reached to the conclusion, that complete self?government does not have to be the best solution, if you want both quality and efficiency.

ESAB is a world leader in production of welding consumables and equipment. The company manufactures, among other things, welding electrodes. A roller straightening unit is used in the cutting process to straighten the wire, which the welding electrode consists of, by adjusting some of the rollers during operation. According to ESAB?s standard and the European machinery directives, moving parts of machinery, such as rollers of the roller straightening unit, must be out of the operator?s reach.

This thesis has been done on a haulage contractor company named GP-Last (AB Gustav Perssons Åkeri) and the purpose with the paper was to analyse their traffic from Malmö to Stockholm and leave suggestions on efforts that GP-Last can use to increase their level of transportation quality. This has been done with two main questions, which problem do they have today and which efforts they need to do to solve their problems? Through a case study with interviews as method to collect data it showed that GP-Last had four main problems.        Not enough information about their freights. The transport planning unit in Malmö doesn?t have the exact delivery address when GP-Last begins to bring in the gods.        There are no clear routes.

Smartmobilens användande har successivt ökat och blivit en central del i vår vardag. I och med detta har antalet olika applikationer ökat och numera finns det en mängd olika typer av applikationer som tillfredsställer användarens behov. I den här studien har vi därför försökt ta reda på om träningsapplikationer har förmågan att motivera användaren vid träning. Vi har observerat fem kvinnor och tre män, med varierande erfarenheter av träningsapplikationer, som har deltagit i en fyra veckor lång studie bestående av två faser. Under Fas 1 har respondenterna laddat ned två valfria träningsapplikationer som de testat och under Fas 2 har de använt en specifik applikation.

Användningen av mobila system ökar idag. I takt med att användningen ökar ställshögre krav på god usability. Nästan 50 % av defekterna i programvaror kan härröras tillusability?problem. Denna uppsats behandlar unika begränsningar och möjligheter hosmobila geografiska informationssystem, GIS, utifrån ett usability?perspektiv.

Today bonuscards are used widely to encourage customers to return for more purchases. Many of those bonuscards are today made of paper which is negative for the environment and since they are not very valuable they are also easy to misplace. The mobile version of these cards most often needs an active download and/or other processes before use and are therefore not so easy to use spontaneous. This project aims to make it easier to handle these bonuscards with today?s smartphones and solve the given problems.

ESAB is a world leader in production of welding consumables and equipment. The company manufactures, among other things, welding electrodes. A roller straightening unit is used in the cutting process to straighten the wire, which the welding electrode consists of, by adjusting some of the rollers during operation. According to ESAB?s standard and the European machinery directives, moving parts of machinery, such as rollers of the roller straightening unit, must be out of the operator?s reach.

The environmental demands are increasing when it comes to product development. EcoDesign isabout minimizing the environmental impact of a product, considering the entire life cycle of it,without compromising other qualities like function or cost. In this master of science thesis amobile phone has been analysed with Ten Golden Rules in EcoDesign regarding production, useand End of Life. Also a functional and an environmental profile were made. The goal was tomake a new concept phone, based on the previous analysis, which communicates userfriendlinessand sustainable development.

This thesis describes the redesign ofequipment designed for drying bags thatis used in Fresenius Kabis´manufacturing of their nutritionmedicine in Uppsala. The need of thistask arise during the start of thedevelopment of a new packaging line werethis equipment were meant to be used. Anevaluation of the bagdryers capacity andcapability was necessary.The work started with gathering ofinformation from suppliers of the usedcomponents and from the responsibleengineers for this equipment. Aneducation to learn how the equipmentworked and how to operate it were taken.That was followed by the creation of astudy plan were the tests were plannedto test different parameters effect onthe drying result and to see if thebagdryer managed to handle the bags ofthe correct format in the pace that theequipment should be designed for.The test results detected a need ofdesigning a unit with a function thatholds the bags in place while passingthrough the dryer in order to attainhigh quality results. The results werelater used for optimization of thedesign.