The purpose of this project was to further develop and complete a quadcopter that had been built in an earlier course at KTH, so that it could be used for demonstration and education at the school. The quadcopter was at the beginning of the project completed when it came to hardware, and there was some software functionality implemented but no system for automatic stabilization. The main goal of the project was to implement such a system, and to combine it with the previous functionality to make the quadcopter operable and able to fly. To create a functioning and stable ground multiple basic software features has been implemented, and on top of that additional software to improve the safety, stability and functionality. The most important part is the control system that is responsible for converting sensor and control signals to suitable motor values.

In Stockholm, Johanneshov the Slaughterhouse area (Slakthusområdet) can be found. A number of companies have gathered there providing the Stockholmers with meat products. This area has a great need for cooling to supply large cold storages. To facilitate this, a central cooling system has been built, supplying the area with effective and safe cooling.The aim of this master thesis study is to give hints to energy efficient and reliable changes that can be put in place at a low marginal cost depending on the future activities in the area. The suggested changes will be presented to the company Bravida (managing the system), which also desires a deeper understanding of the energy flows through the central cooling system.Firstly visiting the site with proper guidance, we have then tried to understand the function of the system including which machines and media that are used.

En publicerad metod för undersökning av noggrannhet hos DNA polymeraser har undersökts. Metoden bygger på in vitro replikation av lacZ? genen i pUC18 och identifiering av mutationer genom blå vit selektion efter transformation av reaktionsprodukten. I arbetet visas att framställning av templatet till polymerasreaktionen kan göras enligt beskrivning, men att utbytet blev lågt. Polymerasreaktionen med det framställda templatet fungerade även det enligt beskrivning men mängden erhållen produkt var för liten för att ge kolonier efter transformationssteget.

Inbyggda system blir allt vanligare i dagens samhälle. De inbyggda systemen finns i nästan allt nuförtiden, från diverse fordon till leksaker för barn.Dagens teknik innebär bland annat att gårdagens lösningar kan realiseras på en bråkdel av den tidigare ytan. Allt mer blir ytmonterat med mindre och mer komplexa kretsar. Detta är inte alltid till utvecklarnas fördel då montering av prototypkort blir en svår och/eller dyr process.Målet är att ta fram ett inbyggt system med en ARM-processor. Systemet ska innehålla USB-OTG, ethernet, minne av olika slag som FRAM och microSD samt en display med pekskärm för användargränssnitt.

The aim of this study is to examine the possibilities to use gamification to reach thepolitical goals for the transportation system in the Stockholm region. The study has aninterdisciplinary approach and is based around two main building blocks: gamificationand the transportation system in the Stockholm region. The first part examinesgamification. This includes contemporary use, debate, academic definition and aninvestigation of how gamified applications should be developed. One of the mainfindings is a suggestion that gamification should be seen as a process rather that a setof predefined game mechanics that can be applied to any activity.

The purpose of this study was to create a picture of Södra´s round wood transporters usage, and positive or negative experiences of the KOLA-system. The KOLA-system, owned and managed by SDC, is a program for handling timber orders and displaying their locations on digital maps. The study was conducted as a twenty-three question internet-based survey. Of those asked to complete the survey, 57 percent chose to answer the questions. The results of the study indicated that several of the transporters found the system quite good and used it to a large extent. The system also had many deficiencies however, and there was clear potential for further increasing the usage of the system.

Modebranschen kan betraktas som föränderlig och dess meningar och betydelser ändras över tiden, vilket ofta avspeglas inom kulturen. Människor kommer därför att konsumera kläder olika beroende på vilken kultur de tillhör. Östeuropas tillväxt och förändring har varit stor sedan kommunismens fall. Ekonomin har öppnats, tillgängligheten till nya varor har kraftigt ökat och konsumenters påverkan av västvärlden gör sig tydligt gällande. Förändringar har skett, från kommunistiskt präglade samhällen med begränsade möjligheter i människors beslutsfattande, till demokratiska och mer pluralistiska samhällen där konsumentfrihet ses som en naturlig del av livet.

The purpose with this study is to compare different systems of grain storage from a financial point of view. Grain that is supposed to be fed to laying hens. The systems that were compared were different airtight storage of grain and a system of conventional storage. To make this case study I choose to compare four different systems. In the case study there was one system with bin drying of the grain, two systems with airtight storage of the grain and one system where you buy dried grain during the season. I made several of capital investment appraisal where I found the cost of each system, then I took the cost and divided it with the total grain use and calculated the cost for each kilogram of grain, and also the cost of the feed. Then I compared the cost from my case study with the cost of buying feed. All the systems except for one, gave a lower cost for the hen feed than buying feed from a dealer The best system, witch were bin drying lower the cost with about 80 000:- SEK.

The Thesis purpose is in the context of system development validate the Scrum Methodology. Projects concerning information technology are difficult to manage and tend to fail in quality, time or costs. Scrum presents a new view of the system development. Better cooperation between customers and developers, continuous follow-up on daily basis and extensive communication in the development team are all characteristics of Scrum. Scrum is described as a new paradigm by its founders but has been criticized by experts of system development too.

This thesis is based on an assignment from a unit within an international group manufacturing industrial products. The purpose of the thesis is to analyze and suggest ways to improve the cost accounting system in use at the unit. The main source of empirical data has been interviews with employees. The theoretical framework is based on a comparison between traditional/standard costing and activity-based costing (ABC). The cost accounting system in use is described in detail and classified as a traditional/standard cost accounting system.

Customer Relationship Management (CRM) har fått ökad uppmärksamhetunder de senaste decennierna. Sökningar i vetenskapligaartiklar och litteratur visar att det finns behov av kunskap om CRM ochdess funktionalitet. Företaget som studeras i detta arbete är ett friståendeIT? och managementföretag som bland annat erbjuder CRMochERP?system (Enterprise Resource planning) till kunder i olikabranscher. Företaget upplever att kunderna har olika behov och uppfattningarom funktionaliteten inom CRM?system och även kring CRMfunktionalitetsom kan finnas i andra system såsom ERP?system.

This thesis investigates in which way principles and theories of usability is revelant when evaluating interactive systems for children aged 10-12. It also investigates whether there are specific factors that you should keep in mind while developing interactive products for the targeted group.The results of the qualitative study shows that priciples and theories of usability is relevant when evaluating interactive systems for the targeted group. However there is one concept that is more significant than the others. Our study shows that our targeted group is sensitive to time-consuming activities such as loading times etc. which has to do with the efficiency of the system.

I denna uppsats presenteras grundläggande delar av hyperbolisk geometri. Uppsatsen är indelad i två kapitel. I första kapitlet studeras Möbiusavbildningar på Riemannsfären. Andra kapitlet presenterar modellen av hyperbolisk geometri i övre halvplanet H, skapad av Poincaré på 1880-talet.Huvudresultatet i uppsatsen är Gauss ? Bonnét´s sats för hyperboliska trianglar..

Denna undersökning handlar om hur användandet av CRM-system (Customer Relationship Management) påverkar företag och dess kundrelationer. Forskningen om detta visar att CRM-system kan ge stora fördelar för både kunderna, företaget och relationerna där emellan. Men det finns många delar som påverkar hur mycket ett CRM-system förändrar relationerna mellan företag och deras kunder. Resultatet från denna undersökning kan vara av intresse för företag som går i tankarna att skaffa ett CRM-system eller förnya det som dem redan har. Vilket leder fram till vår problemfråga: Hur påverkar CRM-system företag och dess kundrelationer?Syftet med uppsatsen är att beskriva och analysera hur ett CRM-system påverkar företag och dess kundrelationer.Undersökningen baseras på en teoriram som ger en inblick i vad relationer är och vilken betydelse kundrelationer har för företag, även behandlas CRM-system och dess effekter på företag.

Unjustified enrichment is used as legal basis when a part claims compensation. Unjustified enrichment can be illustrated as: (A) made a profit on someone else?s loss (B) and if the profit is"unjustified"and has"no legal basis"it shall be returned, which then make it possible for B to claim compensation from A referring to the profit. B has in this case lost something that he owns. To be able to claim A for compensation must the loss of B also be a benefit for A.