Biogas is a renewable energy produced through anaerobic digestion, which means that organic matter is degraded by microorganisms under anaerobic conditions. The produced biogas can then be used for cogeneration, electricity, heat or upgraded to vehicle gas. Eskilstuna Energy & Environment AB has four digesters at Ekeby water sewage treatment plant, Eskilstuna. One of the biogas reactor (RK4) is equipped with a jet-mixing system while the remaining digester uses top-mixing. The mixing system is an important parameter to achieve optimum operating conditions for the process regarding gas production and degree of digestion.

De flesta företag använder sig av något slags system för att kontrollera arbetsflödet. Dessa system används av alla på företaget och därmed är det viktigt att undersöka, hur medarbetarna upplever detta system. Med en explorativ utgångspunkt gjordes en enkätstudie på ett företag i Västsverige. Resultatet visade att deltagarna, förutom några få procent i stort sett hade liknande positiva upplevelser. Ingen skillnad fanns heller mellan grupperingarna ung/gammal eller antal år de arbetat på företaget.

Precis som titeln avslöjar handlar rapporten om att utveckla ett system som kananvändas vid utvärdering av övningsmoment. Idag saknas ett liknande system somvara ett stöd för hemvärnets instruktörer vid utvärderingar som har till syfte att ökaförståelsen hos övande personal. Systemet består av en mobilapplikation och enwebbapplikation. Mobilapplikationen loggar hur en soldat har framryckt under ettövningsmoment och sedan sammanställs data från en eller flera mobilapplikationer ien webbapplikation där data visas på en interaktiv karta. Kartan ger möjlighet attstega sig igenom händelseförloppet.

This report is a bachelor thesis presented at the department of Computer Science andEngineering at Chalmers University of Technology. The aim for the project is to find a simplemethod to measure and display physical quantities in a three dimensional room.The report describes a method to construct a system for measuring differentphysical quantities via sensors. The system must be built in a modular and expandable way tobe adaptable to different tasks.The system explained in the report consists of two parts;A physical scanner with moveable probes for carrying sensors and a microcontroller forcontrolling the probes and communicating with the next part.An application written in Java for storing the measured values and presenting them in a lucidperspective.It is possible to construct the scanner with different designs and circuitry, with multiplexers andflip-flops, to ensure that an unspecified number of probes can be added to the system and thatthey can be operated simultaneously.The Java application is written in a modular way, using a design pattern that separates eachindividual part of the application. It contains exceptions and interfaces that ensure a safe andexpandable application..

This is a thesis project in the field of information technology which begins by evaluating existing food price comparison systems and subsequently aims to design an improved, web based system for said purpose. The system features interfaces for price reporting, price comparisons as well as various search and review functions. The objective is to create a system able to compete with existing price comparison systems, which requires careful selection of products that can be found in all foodstores that also represent different households; a user-friendly price reporting and price comparison interface and an efficient tool for ensuring the validity of reported prices.The designed system features a more accurate formula for calculating average prices in events where the real price is missing; a more reliable security mechanism forv alidation of reported prices and a more comprehensible interface for viewing price reports, reporting prices, reviewing stores and products in comparison with existing systems. The system does, however, suffer from some optimization issues primarily in the form of inefficient database modeling; SQL queries and JavaScript code although testing has shown that these shortcomings do not hamper overall performance to such a degree that usability is compromised. Further usability testing performed on the system with five test subjects shows that a high level of overall user-friendliness has been achieved even though some special features, such as the detailed report containing price information per product for each store need to be improved.It is not possible to say at this time whether or not the designed system will be able to compete with existing ones or if the very concept of food price comparisons per se is viable in terms of profitability and marketability.

Today all buildings contain some form of home automation. It might be heating controlled by athermostat or motion detectors controlling outdoor lighting.This paper,The Intelligent House, deals with the planning of a house in Kiruna, in the north ofSweden and further immerses itself in home automation or intelligent control in single-familyhomes. The house has been entirely planned, from layout to structural design and plumbing.The purpose of the paper has been to investigate the possibilities in home automation in singlefamilyhomes and to choose a suitable home automation system for the house being planned.The system has been designed and the costs and energy savings have been calculated.The system chosen for the house is called KNX and is the largest system for home automation inSweden. It is used to control heating, ventilation, lighting and alarm systems in the house. Is hasbeen found that KNX is very expensive and that the amount of energy, possible to save in thehouse, using the system, is relatively small.

Even though terrorism has been on the political agenda for several years there is no general accepted definition of the phenomena of terrorism. Several scientist do also apply that terrorism have changed after the 9/11-attacks. The purpose with this thesis was to analyze and compare the image of terrorism represented by the United States, United Kingdom, Sweden and Norway, in an attempt to draw conclusions about similarities and differentials. The material that was used was these four nations individual counter terrorism strategy. This was made by using idea analysis and self constructed dimensions based on earlier science about security, terrorism and international law.

The aim of the project is to develop a tool for a management system at the advertising agency ofConfetti. The company has during a longer period of time felt a need of introducing a quality and environmentalsystem but have a lack in resources of knowledge, time and money. Their goal is to have aconcrete documentation which describes their quality policy and the function of the activity.The work has been performed by mapping and analyzing the processes of the company according tothe process model with focus on one pilot process. New routines have been developed and documentedin a management system.Confetti would like their management system to fulfil the ISO-standard so that they eventually inthe future can be certified. Therefore a literature study has been done according to management systemsand standards.

Many research reports mention the fact that a huge number of all system development projects never reach a successful ending; with other words never fulfil formulated goals. By identifying and forming success factors (and in some aspect risk factors) that the project manager in practice can use, this study may be seen as a step in the direction towards minimising the high number of failed system development projects. The purpose of this research report is to investigate how a system development project, where the development process is based on a specific development or process model (in this case the Waterfall model), can and should be driven. I aim to clarify what is demanded of a project leader for the specific development process and give an account for which eventual leadership qualities that can be well suited for given situation in relation to the need for technical competence. Among other things the project manager should inspire confidence, drive, be a decision maker, engage and own some form of basic knowledge in the field of system development.

Den svenska app- industrin befinner sig i ett skede där flera framgångsrika appföretagutvecklas. Det flesta av appföretagen klassar sig som born globals även fast de intealltid innehar marknadsandelar utanför Sverige men där deras tekniska grund tillåter deatt ha en global marknadsnärvaro. Men att göra dess marknadsnärvaro till enmarknadsandel är en process som kräver mycket mer än att bara kalla sig för bornglobal. Entreprenörer måste fylla en stor roll när det kommer till att skapa dessamarknadsandelar, där entreprenören även måste ta viktiga beslut i bland annat valet avinvesterare eller riskkapitalister, vilket kan bidra till att öka chansen för appföretagenatt bli framgångsrika globalt.Den teoretiska referensramen som används för att komma underfund med problemethar huvudsakligen varit, born global teorin, Nätverksperspektivet och InternationelltEntreprenörskaps teori. Där man även kan hitta underrubriker under några teorier.I analysen har vi analyserar vår teoretiska referensram med det empiriska insamladedata för att tillsammans kunna få en slutgiltig analys genom att kombinera teorin,empirin och våra egna tankar.Vi har kunnat dra slutsatsen att det är viktigt för Svenska appföretag att knyta till siginvesterare och riskkapitalister med kunskap och nätverk för att kunna lyckasinternationellt.

Detta examensarbete vänder sig till personer som är intresserade att använda nya miljövänligametoderna för elproduktion eller personer som redan använder små vindkraftverk ochsolpaneler med behovet av en extra energikälla i små stugor eller avlägsna platser där tillgångentill elnät är omöjligt. Syften i detta arbete är först och främst att bygga ett system förelproduktion med hjälp av en cykel. Sedan bestämma mängden av elektrisk energi en personkan alstra med systemet. Slutligen svara om detta system skulle kunna använda som ettstödsystem för elproduktion i småskalighet.Den första målsättningen är att utforma ett system med användning av kraftelektronik där denkraften som genereras matar lasterna. Den mekaniska delen kommer att konstrueras som en delav energikällan, därefter kommer det att utformas en kontroll för att styra effekten viaelektroniska komponenter, de elektriska belastningarna matas av systemet, kommer attsimuleras.

Regulation of rivers by dams and reservoirs is a good example where anthropogenic impact could be considerable both in the local environment, but also has major implications upstream and downstream. This study was accomplished as a literature study of the river Nile, which is extremely important for water supply. The purpose of this study was to investigate the consequences of the construction of the Aswan High Dam, to obtain a consistent flow for water supply, irrigation and power generation in Egypt. Since Egypt has a very hot and dry climate large amounts of water in reservoir is lost to the Nubian aquifer system and by evaporation. The consequences from constructing the dam are considerable.

Within the interconnected global markets of today; people, products, and information travel at a pace never met before. In light of the global retail markets recent integration, consumers are opened up to new products and are beginning to develop a vetted interest in the heritage of those products. Within literature this process has been coined "Country of Origin" COO, and its impacts on consumer attitudes, product value- assessment, and overall behaviors has been one of the most emphasized areas of "international business" studies, during the last three decades. Numerous studies have shown a correlation between positive or advantageous associations to a country of origin, and the actual products representing and coming out of that country. It is by this synergetic process that so-called positive COO-effects are brought forth.The goal of this thesis stems directly from the still unexplored potential for Swedish firms to differentiate their products and brands on new international markets, through a strategic and coherent communication of relevant Swedish COO-effects.

Den svenska app- industrin befinner sig i ett skede där flera framgångsrika appföretagutvecklas. Det flesta av appföretagen klassar sig som born globals även fast de intealltid innehar marknadsandelar utanför Sverige men där deras tekniska grund tillåter deatt ha en global marknadsnärvaro. Men att göra dess marknadsnärvaro till enmarknadsandel är en process som kräver mycket mer än att bara kalla sig för bornglobal. Entreprenörer måste fylla en stor roll när det kommer till att skapa dessamarknadsandelar, där entreprenören även måste ta viktiga beslut i bland annat valet avinvesterare eller riskkapitalister, vilket kan bidra till att öka chansen för appföretagenatt bli framgångsrika globalt.Den teoretiska referensramen som används för att komma underfund med problemethar huvudsakligen varit, born global teorin, Nätverksperspektivet och InternationelltEntreprenörskaps teori. Där man även kan hitta underrubriker under några teorier.I analysen har vi analyserar vår teoretiska referensram med det empiriska insamladedata för att tillsammans kunna få en slutgiltig analys genom att kombinera teorin,empirin och våra egna tankar.Vi har kunnat dra slutsatsen att det är viktigt för Svenska appföretag att knyta till siginvesterare och riskkapitalister med kunskap och nätverk för att kunna lyckasinternationellt.

When constructing a new house many questions appear, from architecture to decisions regarding installations. Sweden is situated in a cold part of the planet and questions regarding which heating system to install face everyone who decides to build a new house. This thesis describes a construction solution of a villa in Kiruna. The extended essay analyzes which heating system is most suitable for the construction. The options are geothermal, district and pellet heating systems.