In this qualitative study of students? methods of calculating subtractions, I have used interviews, subtraction exercises and analysis of teaching material. The purpose of my study was to explore which methods students in grade three uses when calculating subtractions. I also wanted to highlight which strategies the students use and their comprehension of the concept of subtraction. In the study, I also highlight the different pedagogical ideas on which the teaching material is based on and the students? choice of methods.  The study shows that the students choose to use the methods?deduct? and ?kind of number? independently.

During spring 2012, six students at the Royal Institute of Technology in Stockholm carried out agroup project in the field of mechatronics as part of the thesis for the bachelor degree. The resultwas a robot with active balancing and the purpose of this report is to describe the development,manufacturing and problems that arose during the project. The finished robot has two wheelsmounted in line with each other, like a bicycle. Measurement data from an accelerometer and agyroscope are used together in a complementary filter for determining the angle from the verticalplane. For balancing, a PID controller was used to control the rotation of a reaction wheel, whenaccelerating causes a straightening torque.

Examensarbetet undersöker om det är möjligt att utföra en nivåmätning där underlaget är ojämnt med en begränsad budget och ändå få ett tillförlitligt resultat.För att kunna testa det så används tre stycken ultraljud sensorer i ett skåp som simulerar en container. Varje sensor utför mätningen och sedan filtreras värdena. Hela systemet filtreras sedan med ytterligare ett filter och då blir noggrannheten ca 4 cm från den riktiga fyllnaden. Miljöpåverkan skulle bli mindre om det framtagna systemet installerades i alla containrar vid de miljöstationer som finns i Sverige. Lastbilarna som ska tömma innehållet behöver aldrig köra till en ha lvtom container vilket även drar ner kostnaderna för miljöstationerna.

This is a qualitative case study of young womens? experiences of blogging about One Direction on the social media/microblogging platform Tumblr. The aim of this study was to find out what fan blogging is and why fans blog. We did this by creating an account on Tumblr where we invited young women between the ages of 16?29, who had active fan blogs dedicated to One Direction, to answer an open-ended questionnaire.

This is a qualitative case study of young womens? experiences of blogging about One Direction on the social media/microblogging platform Tumblr. The aim of this study was to find out what fan blogging is and why fans blog. We did this by creating an account on Tumblr where we invited young women between the ages of 16?29, who had active fan blogs dedicated to One Direction, to answer an open-ended questionnaire.

This is a qualitative case study of young womens? experiences of blogging about One Direction on the social media/microblogging platform Tumblr. The aim of this study was to find out what fan blogging is and why fans blog. We did this by creating an account on Tumblr where we invited young women between the ages of 16?29, who had active fan blogs dedicated to One Direction, to answer an open-ended questionnaire.

This is a qualitative case study of young womens? experiences of blogging about One Direction on the social media/microblogging platform Tumblr. The aim of this study was to find out what fan blogging is and why fans blog. We did this by creating an account on Tumblr where we invited young women between the ages of 16?29, who had active fan blogs dedicated to One Direction, to answer an open-ended questionnaire.

Because of the mass tourism industry that exploits sensitive locations all over our planet a new kind of tourism came into focus in the 1980?s. This new form of tourism was named ecotourism, and as the name reveals ecotourism deals with low-impact travel. Today, all sorts of places can be gazed upon in a flick of a switch; all you need is a television set. It is well known that destination marketing successfully uses visual media as a tool to sell trips to potential tourists.

This is a qualitative case study of young womens? experiences of blogging about One Direction on the social media/microblogging platform Tumblr. The aim of this study was to find out what fan blogging is and why fans blog. We did this by creating an account on Tumblr where we invited young women between the ages of 16?29, who had active fan blogs dedicated to One Direction, to answer an open-ended questionnaire.

This thesis has been conducted at Saab Bofors Dynamics AB. The purpose was to investigate if a non-linear missile model could be stabilized when the optimal control signal is computed considering constraints on the control input. This is particularly interesting because the missile is controlled with rudders that have physical bounds. This strategy is called Model Predictive Control. Simulations are conducted to compare this strategy with others; firstly simulations with step responses and secondly simulations when the missile is supposed to hit a moving target.

Multiplikatorer används ofta som ett byggblock vid konstruktion av kretsar som digitala filter, FFT-processorer och aritmetiska enheter. Olika trädstrukturer används i"höghastighet"applikationer för multiplikatorer. En typ av träd,"overturned-stairs"(OS) som är ett adderarträd av första ordningen har uppvisat lika optimal prestanda med avseende på hastighet som Wallace-träd, vid 18 eller färre ingångar. I moderna integrerade kretsar, ger ledningar och kopplingar upphov till fördröjningar och parasitiska laster. I en jämförelse mellan Wallace-träd, och OS1-träd har det sistnämda kortare och mindre komplicerad ledningsdragningar och är därför mer ändamålsenlig för VLSI implementationer..

This report describes what wireless local area networks are and the use and configuration of them. These WLAN as they also are called can be used both in new installations and expansion of existing networks. Further on this report reveals security in this area. Security is incredible important in all networks not at least wireless because you don?t have to be in the environment physically to get the information, you only have to be in the coverage area that can be several hundred meters.

This report describes the manufacture and control of a flying platform. The report describes the basic and fundamental theories required to get the platform flying. It touches on subjects such as A/D-conversion. PWM-control and PID-control. The sensors used in the platform are a gyro and an accelerometer.

The aim of this essay is to investigate whether the role of the teacher and the teaching in the classroom is affected when the Ipad is introduced in an one-to-one situation, and if so how these effects occur. Previous research show that the introduction of new technology in education offers hope of a more effective way of learning but that this at the same time leads to challenges for traditional ways of teaching and traditional views on knowledge (Säljö & Linderoth (red.) 2009, Erixon (red.) 2014).The method used is a qualitative interview in combination with observations used as a complement to the interviews. Four teachers working on an upper secondary school have been interviewed and one lesson in English taught as a foreign language and one lesson in social science have been observed.The results show that the use of Ipad changes how the teachers relate to and use the teaching material, as all material can be gathered in the Ipad and accessed at all times and can also be shared with the pupils. The Ipad also makes it easier for the teachers to offer pupils individual instructions which the teachers view as positive. In addition, the Ipad enables a change in regards to the pupils as they switch from being users to becoming producers in the use of the Ipad which in the teachers? opinions offers more profound ways of learning..

Lifestyle magazines portray women in different manners and have an influence on how media consumers create self-images. The importance of knowing how different visual representation of the female acts out in magazines with large target audiences is therefore of weight for the magazines? readers to understand. This thesis analyze how the two lifestyle magazines ELLE and LOVE portrays women in images and how they in turn create ideal images of women.The thesis has been conducted through a qualitative analysis of 5 images from each magazine that represents the magazines artistic styles. The theories used in this study are semiotic image analysis and visual text analysis viewed from a gender- and discourse perspective.The conclusion of this thesis is that ELLE portrays women as strong, happy and feminine, with at tendency towards androgyny, while LOVE describes women as inferior and sexual objects constructed for the male gaze.