Arvika Fjärrvärme AB, a district heating company from Arvika, today cover 74 % of their total energy production with biofuel wich runs a 16 MW bioler giving process water at saturated liquid state.In recent years Vaporel AB has introduced a new tecnique that gives an external generation of steam after boilers. The concept is built on an adiabatic pressure drop of the saturated liquid in a so called Flashbox which makes a small part of the liquid to evaporate. The generated steam is lead into a turbine where electricity is in a conventional manner.The purpose with this rapport was to do a basic study for the specific system at Arvika where it?s possible to see the potential production of electricity that follows an installation of a flasbox.The final goal was to introduce an economic analysis of a flashox installation at given conditions.To reach our goals we have created a model in Excel where we used the given conditions at Arvika Fjärrvärme to do our calculations. The model has been tested at three different states, of process water returning to potboiler, to be able to decide the optimal operation for the system at present.The studies have resulted in a pressure of the processwater at 14,5 bar (at) and a pressuredrop to 9,5 bar (at) in the flashbox.

This study is about to see whether the two models representing the strategies of lean production is to use and apply in different companies. The models are structured in two different ways in which one of them is checking the softer elements of lean production in the form of leadership and strategies. This model is called Lesat and is based on interviewquestions. The second model, called "learning to see" is about identifying flows. This, together shall then give an idea of how mature companies are when it comes to a whole in the concept of lean production, and susceptibility to use these models to their respective companies. The study is conducted in two companies, SKF couplings systems and AQ parkoprint.

This work has been done to develop a plan for a future dairy barn at theGästgivaregården and to show the space needed for cows and replacement heifers. Itwould also show the storage that will be needed. The design was largely based on resultsfrom studies on six different farms, but also the facts that are taken from research papersand articles in order to compare theory with practice. Because some farms only whereinterviewed by phone I have used a query form to obtain comparable resultes.The aim is to build a new barn with Automatic milking. I've drawn a milking stable for120 milking cow and replacement heifers with the capability to house up to 140 milkingcows if the farm would expand in the future.Calculations of feed amounts and space requirements have been made to see how manyhectares are needed to supply the cows and replacement heifers with feed and to knowabout what size of storage space is required.The investigations made in this writing are to answer questions about the AMS-unit`sposition and how to best maintain a good health status in the herd.

Essingeleden in Stockholm is the most heavily congested road segment in Scandinavia and it is ofgreat importance for as well traffic within the city as for transit traffic. The capacity of Essingeledenand Norra Länken is not enough to accommodate all traffic. At times it is not moving at all, whichresults in long queues and an augmented risk of accidents. Consequently measures for increasing thecapacity on E4/E20, which will reduce congestion and the risk of accidents, are implemented byTrafikverket. In fall 2012 one lane of three at Pampas will be closed and so will the exit fromEssingeleden to Norra Stationsgatan, called Parkeringsbron.

Mosquitoes are found in extremely large numbers in the lower parts of the River Dalälven. In the year 2000 the mosquito nuisance was especially high, resulting in foundation of the Biological mosquito control project. Since 2001 mosquito larvae are controlled by using a biological pesticide BTI (Bacillus thuringiensis ssp israelensis). The mosquito fauna in the area is dominated by flood water mosquitoes, a group of mosquitoes that are very aggressive and form new generations of mosquitoes during every single flooding event during the summer. To be able to efficiently control the mosquitoes it is essential to know the extension and locality of the flooding.

När en värdering av ett företag skall göras finns det flera olika typer av värderingsmetoder som kan användas. Bakgrunden till den här studien är att uppsatsförfattarna blev kontaktade av ägarna till ett företag som undrade vad deras företag skulle vara värt vid en eventuell försäljning. Det specifika med företaget är att det endast arbetar mot en kund, samt att företaget nästan inte har några materiella tillgångar.Syfte: Syftet är att kartlägga de olika värderingsmodeller som används vid värdering av företag, för att därefter klargöra vilken eller vilka metoder som är bäst lämpade för vårt fallföretag. Detta syftar till att resultera i en värdering av vårt fallföretag.Metod: Vi har använt oss av en kvalitativ metod i form av en grundlig litteraturstudie, samt en genomgång av tidigare forskning. Vidare har ett antal e-postintervjuer genomförts och slutligen presenteras en modell för värdering av vårt fallföretag.Teori: Den teoretiska delen av denna studie består av de värderingsmetoder som beskrivs i den litteratur som finns inom området.

Ett nytt produktionskoncept på Saab Automobile AB ? Lean Automation ? är under implementering och utveckling. Inriktningen är att utveckla automationslösningar som stödjer principer och arbetsätt inom Lean Produktion. En gemensam nämnare är automation som byggs upp av enkel, standardiserad och modulariserad utrustning och som kan omkonfigureras av egen personal.Två pilotinstallationer har gjorts under 2010: Transport med enkel AGV (Lean AGV) samt Lean Automation Robot Cell (LARC). Dessa komponenter ingår i denna studie som inriktar sig på förändringar i det totala produktionssystemet med sikte på en konstant hög produktivitetsnivå även vid frekventa förändringar i volym och produktinnehåll.Studien pekar på vikten av att samla produktionspersonalen för att underlätta balansering, men även för att skapa en visuell process där fel snabbt kan upptäckas och åtgärdas.

The society is developing fast and the development is constantly on-going, new technology results in new opportunities and new problems for both companies and consumers. The use of Internet has heavily increased around the world; this means that the companies can use Internet as a channel of communication to reach the consumers. The most recent type of marketing is web marketing. The fact that web marketing is constantly changing raise the question of how effective different types of web marketing are.The purpose of this study is to investigate four selected types of web marketing. This is achieved by comparing the response from the consumers and the cost for the different types of web marketing.

The purpose of this study is to describe and analyze a group of participants (social workers, contact families and the young adults who had been given a contact family as children) and monitor their experience of the intervention contact family and its goals, contents and design. We also wanted to look into what goals and guidelines are available regarding the interventions design and contents. We also looked into parts of the intervention which the participants found most useful for them individually. The method we used in our study was qualitative interviews. We compared and analyzed our results to research made on the subject and the theoretical frame.

Evaluations of open Ditch status and function, with an assessment of suitability of a conversion to a two stage ditch as a low maintenance alternative. To illustrate Swedish drainage problems this work focused on two agricultural drainage associations assessed in detail with a new method called MADRAS (Minnesota Agricultural Ditch Reach Assessment for Stability). With the assessment of the MADRAS method estimates were made to conclude the ditches operating problems. This was made through measurements of sediment depths, mass bank failures etc. in order to quantify ditch problems and propose practical actions for improved ditch stability and water quality. The MADRAS surveys were conducted in two main ditches that drains 2900 hectares of land on the northern shores of Mälaren. In the study measurements of the ditch cross-sections were also conducted to compare actual profiles with the original map profiles. The evaluation showed that parts of the studied ditch sections were operatively poor; main reason was mass bank failure, undercut channel banks, sediment aggregations and narrowed ditches. The profile survey shows that a majority of the profiles 80 % has sediment accumulations there remains only 64 % of the original profile from the map.

Stockholms vattenskärning AB in Kungsängen has through the acquisition of a company begun to design and produce aircraft heaters whose origin is early 1970s which follows a high inefficiency in terms of energy consumption and size.The aircraft heater, which is sold worldwide, serves its purpose for customer satisfaction and has done so ever since it was developed in the 70s.Stockholms vattenskärning AB is now investigating the possibility in making the aircraft heaters more efficient, both in terms of energy consumption but also on a more efficient design with the belief that it would lead them to an edge in the market. The aircraft heater consists of several main components whose function altogether is to keep passenger aircrafts warm while they are on the ground.This project has been limited to the further development of the heat exchanger package which accounts for the conversion of the hot medium to the fresh air being carried in to the aircraft cabin. Work has been divided into different phases in order to create a better understanding of the project range and to make it easier to divide the various elements in the time available, 10 weeks. These phases are literature review, situation analysis, concept generation, CAD, concept comparison and writing reports.After the initial literature review was made, a fundamental theory was written which is essential in understanding the remaining parts of the project.With the theoretical part as support, measurements and calculations were made on the current heat exchange package in a situation analysis to ensure its operation and efficiency.In the concept generation phase, the collected facts from the literature review was used as the basis for creating a matrix. The purpose of the matrix was to indicate the two most suitable types of heat exchangers to develop four new concepts out of.In the CAD phase the four concepts was drawn up and then described with text and images.The last phase is the concept comparison where a concept selection matrix is used to function as a decision basis for further production at Stockholms vattenskärning AB. The four concepts have been developed based on the current heat exchanger and is gradually changed into a design of a cross-flow heat exchanger constructed out of stainless sections. The purpose of this is to have gradual upgrading of the heat exchanger as an option, in order not to saturate the market..

The research group Soil and Water Management at the department of Soil and Environment at theSwedish University of Agricultural Sciences in Uppsala are studying greenhouse gas emissions fromcultivated peat soils. To measure carbon dioxide emissions from peat soils in the field the researchgroup are now using two portable carbon dioxide meters (Vaisala GMP343). For practical reasons,they plan to acquire a new type of automated field meter. The aim of this study is to evaluate thepresent meters to see how environmental conditions and instrument settings affect the results,which is meant to facilitate the introduction of the new field meter when the meters needs to becompared. As a part of the study the relationship between groundwater level and carbon dioxideemissions from peat soils will be investigated.The evaluation of the two carbon dioxide meters was made by connecting them to one single airtightsystem, with the aim of creating identical measurement environments.

Since the year 2005 listed companies are supposed to use international accounting standards when they set up their group accountancy. One thing that has changed with the new standards is the accounting of goodwill and long-lived intangible assets. Earlier companies were supposed to write of their goodwill during the years they had expected the extra profit to arise. According to the new regulation, an impairment test shall be done annually, as well as when there is an indication of decreased value. According to IAS 36 point 134, the company shall provide information in their accountancy about the impairment test.The aim of this study is to find out if some companies may be willing to reveal less information in their accountancy, and if there are any factors that affect this.

Denna rapport beskriver arbetet med utvecklingen av en ny modell för kaplanturbiner. Utvecklingen bygger på två kopplade differentialekvationer som under arbetets gång anpassats och implementerats i turbinmodellen.Modellen beskriver hur vattenflöde och turbinmoment påverkas av avvikelsen från den optimala kombineringskurvan för vinklarna på turbinens ledskena och löphjul, och är anpassad för ett referensaggregat med tillgängliga provdata. Även övriga enheter i vattenkraftaggregatet modelleras och sätts samman med frekvensregulator och elnät för att simulera aggregatets reglerstabilitet i önätsdrift.Verifieringen av turbinmodellen sker genom försök att återskapa de befintliga verkningsgradskurvorna med hjälp av modellen. Resultatet visar en god följning av de verkliga kurvformerna, dock med något lägre maximal verkningsgrad.Verifieringen av önätmodellen sker genom att prova stabiliteten i nätfrekvens och turbineffekt vid stegpålastningar. Resultatet ger en stabilare reglerstabilitet än i verkligheten, men uppfyller ändå förväntningarna på en fungerande modell.This report describes the development of a new kaplan turbine model.

Denna studie behandlar ett försök att applicera Lean-teorier på informationshantering. Lean är ett managementkoncept som togs fram i USA under 60- och 70-talet. Dess popularitet har gått i vågor men är idag en utbredd standard inom bil- och verkstadsindustrin. Grundstenarna i Lean-filosofin är att hantera resurser snålt genom att eliminera slöseri och processer som inte tillför värde till kunden. Att applicera Lean-teorier på informationshantering är ett relativt nytt och i dagsläget finns ej vedertagna och allmänt erkända verktyg och metoder.