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.

Wind power is expanding rapidly in Sweden. Increasing amounts of wind power sets higher requirements on balancing power and grid expansions and would affect the whole Swedish electricity system. The aim of this report is to examine the factors affecting the wind power expansion in Sweden. How many wind power plants projects will obtain building permissions and what costs and revenues can be expected? How much balancing power will be required and does a changing geographical distribution of the wind power plants reduce the need of balancing power?A survey of the county board?s official applications has been made and out of all the applications, corresponding to 80 TWh produced per year, about half of the applications are expected to obtain a permit with a major portion of them located in the north of Sweden.Especially older wind power plants, deriving revenue from Nord pool, find themselves today in a complicated financial situation.

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.

An increasing number of applications are becoming more or less network based today.The traditional architecture for network based applications is client-server, but as usageof download services are going up, so is the Peer-to-Peer architecture. This report is acomparison between the Peer-to-Peer and client-server model, and can serve as a basiswhen a decision between them needs to be taken. In the report, the performancebetween the different architectures is compared in different contexts. Our basis is ageneral implementation of both architectures in a test that is derived from a previousreport. On top of this, the performance of the different architectures are measured,implemented in a gaming-context.

Lansen Technology develops and sells alarm systems. The communication between the system devices are wireless. The radio protocol used by the system is developed by Lansen with the purpose to be energy efficient. The alarm systems target groups are individuals, businesses and government agencies. The current system is installed, configured and controlled from a control panel for all audiences.

Radio frequency identification (RFID) is a versatile wireless technology usedworldwide. The fields of applications are many and its popularity constantlygrows due to smaller in size, better and less expensive components. RFID isused to identify, track or share information about an object using radio waves.This master thesis describes the process of designing and implementing ahandheld UHF RFID reader. The goal was to, based on a UHF RFID-chipdesign a fully functional, small in size and power efficient device. Amicrocontroller provides the user interface and is also used to control theRFID-chip and a Bluetooth device.

Denna rapport är resultatet av kursen Examensarbete i Informatik på Högskolan Dalarna. Examensarbetet är uppdelat i två delar. Ena delen har som syfte att ge en förstagångsanvändare en introduktion i Mobile.NET. Här beskrivs även vissa skillnader mot traditionell ASP. Andra delen, som uppfyller målet har varit att utveckla en tjänst som gör det möjligt att spela in tv-program på en dator från olika mobila enheter samt pc.

In many clinical applications, it is desirable to transmit sensor information wireless. In earlier research, investigation transmit ECG signal using Bluetooth, was performed. However, when Bluetooth has some drawbacks it is of interest to investigate alternative methods, one such method is ZigBee. Bluetooth has higher data rate speed (1Mbps) than ZigBee (250kbps). However, Bluetooth consumes more power.

The aim of this thesis is to examine how teachers use computer based assessment in their work and what user barriers they experience while working with computer based assessments. The result of the thesis is meant to provide an understanding of which factors affect the use of computer based assessments and how a company who provide computer based assessments applications can increase the rate of use amongst teachers.To investigate this, the author examined a company in Sweden who provide a computer based assessment application for both universities and high schools. The study was carried out at two different schools, a university and a high school, both located in Stockholm. In total nine teachers were interviewed. The author also conducted observations at the company whose computer based assessment application was examined.The author?s findings suggest that a lack of functions within the application and lack of costumer support from the company all negatively impacted the teacher?s use of the application.

Libraries all over the world struggle against the threat of decreased funding and a lack of governmental interest. In countries with an under-developed library sector the interest from the government is often minimal or non-existent. Since the 80´s Sida, the Swedish International Development Cooperation Agency has contributed to the library development in Central America through the Royal Library of Sweden. Nicaragua was the first country to be counterpart in the project. For a period of eight weeks I have completed a field study in Nicaragua and visited the National Library Rubén Darío and public libraries in the country.

Dagens teknik har bidragit till att mobiltelefonens användningsområden har expanderat avsevärt de senaste åren. Detta har lett till att alltfler mobila tjänster har dykt upp på marknaden. Uppgiften i detta examensarbete består i att utveckla en version anpassad för mobiltelefoner av den existerande produkten TelMe, som är en webbtjänst för vikarietillsättning inom olika verksamheter. Den mobilanpassade versionen kommer att gå under namnet TelMe Mobile. Problemställningen var att implementera de väsentliga funktionerna i produkten med avsikt för att göra dessa tillgängliga för mobiltelefoner.

Lansen Technology develops and sells alarm systems. The communication between the system devices are wireless. The radio protocol used by the system is developed by Lansen with the purpose to be energy efficient. The alarm systems target groups are individuals, businesses and government agencies. The current system is installed, configured and controlled from a control panel for all audiences.

This report is part of the major thesis carried out at Stoneridge Electronics in Bromma,Stockholm during autumn and winter 2005-2006. The background to the thesis is the trendwithin the automotive industry where color displays have become more common for presentationof information to the driver, a trend that has come to the commercial vehicle market. Thepurpose of the thesis has been to evaluate whether programmable logic, with respect to FPGAtechnology, could be suitable for display control and graphics generation of these more complexcolor displays in automotive environment.Within the scope of the thesis the FPGA technology has been investigated, i.e. whatopportunities and threats there are with aspect to environmental and security requirements. Inaddition, the market of FPGAs and pre-built IP-cores has been investigated.

Bygglovsprocessen är en vital del i den totala byggprocessen eftersom ett bygglov är nödvändigt i nästan alla fall av nybyggnation och större renoveringar. I dagens samhälle där byggprocessen är under utveckling och allt större tidspress finns så är bygglovsprocessen ofta en flaskhals innan bygget kan påbörjas. Därför behöver bygglovsprocessen utvecklas för att bli effektivare.Syftet med denna undersökning att utreda vad tidigare kunder hos Stadsbyggnadskontoret (SBK) Göteborg anser om bygglovshanteringen. Utifrån de resultat som erhålls presenteras vilka delar i bygglovsprocessen som kan förbättras och effektiviseras. Dessutom ges förslag på förändringar för att uppnå detta.Kundundersökningen genomfördes med en enkät som skickades ut via e-post till kunder som fått godkänt bygglov i februari 2014.

The purpose of this essay is to investigate the airline industry and its part in the mobile community. Further on, to investigate the factors that throughout history are having an impact on the airline industry and have lead to the condition of today. Through this information we are outlining the future of the airline industry.This essay has been written in a qualitative approach. The empirical gathering has been made through interviews based on open discussions between the interviewers and respondents. We started out with creating a theoretical pre-understanding and continued by comparing how well these theories matched the reality.The gathering of the theoretical material was chosen on the basis how well it matches the subject of our essay.