When several production units provide a district heating network, water is pumped from different directions. When the flows from the plants finally meet in the network, the water can be completely still. These places are called zero flow zones. In district heating networks with several plants, which also have different supply temperatures, large and frequent temperature fluctuations can occur when the zero flow zones move. This may cause wear on the pipes, a phenomenon called low cycle fatigue.For this reason it is important to examine where and when zero flow zones that cause temperature changes occur.

AbstractTitel: Ur elden in i askan. En kvalitativ studie om det sociala nätverkets betydelse för ensamkommande barnKeywords: unaccompanied refugee children, social network, risk and resilience, social work.Authors: Karin Bodå och Leila Silva The main purpose of this study is to illuminate and describe the importance of having a social network for unaccompanied refugee children in Sweden. Using qualitative interviews this study looks at their possibilities to create a social network in Sweden and how their network helps them to solve problems. Knowledge of this subject is important for social workers, in order to be able to encourage and help unaccompanied refugee children to build a social network. The base for our analysis is attachment theory, coping theory, social network theory, KASAM theory, risk and resilience theory, system theory are used to give deeper insight into experiences of four unaccompanied refugee boys.

AbstractTitel: Ur elden in i askan. En kvalitativ studie om det sociala nätverkets betydelse för ensamkommande barnKeywords: unaccompanied refugee children, social network, risk and resilience, social work.Authors: Karin Bodå och Leila Silva The main purpose of this study is to illuminate and describe the importance of having a social network for unaccompanied refugee children in Sweden. Using qualitative interviews this study looks at their possibilities to create a social network in Sweden and how their network helps them to solve problems. Knowledge of this subject is important for social workers, in order to be able to encourage and help unaccompanied refugee children to build a social network. The base for our analysis is attachment theory, coping theory, social network theory, KASAM theory, risk and resilience theory, system theory are used to give deeper insight into experiences of four unaccompanied refugee boys.

A wastewater treatment plant has the task to refine the wastewater from substances that should not be released into the environment. The decomposition process can, in a simple way, be described as follows: micro-organisms breathe oxygen and eat unwanted substances. The environment in which the micro-organism lives is known as sludge and the correct amount of oxygen available in the sludge is important for the decomposition to be effective. The oxygenation of the sludge alone stands for about 30% of the plant?s energy consumption.

Microproduction, also called distributed generation, is something that has become more and more popular in the electric grid. Microproduction can however lead to unacceptable performance if several units are installed in the same low voltage network. It is therefore good to know a limit where the performance of the low voltage network becomes unacceptable based on given parameters. This limit is usually called hosting capacity.In this report the hosting capacity with respect to voltage and current have been studied in three low voltage networks which are located in Falu Elnäts concession area. This has been done by simulations in a GIS-program where critical times of the grid have been simulated.

I dagens samhälle har många kundföretag problem med datalagringen vilket beror på att behovet av att lagra data började öka kraftigt under 2000-talet och har fortsatt öka sedan dess. När kundföretagen började använda sig av virtualisering så expanderade även datastorleken. I samband med att datastorleken växte ville företagen att data inte skulle lagras lokalt utan att den skulle vara lagrad på en central plats som en serverhall och vara överskådlig.Studien utfördes på tre sätt, först undersöktes vilka datalagringslösningar som fanns och det skedde genom litteraturstudier. Därefter kontaktades företag som använde olika lösningar för datalagring. Nästa steg var att kontakta de leverantörer som kundföretag använde sig av och som levererade lösningarna.Under arbetets gång upptäcktes olika lösningar på problematiken med ett ökat datalagringsbehov.

The main objective of the essay is to define the meaning of the termgovernance network on the basis of democratic values ? both normative andimperial - with the aim to analyse the prospects to develop an effective anddemocratic governance. Democratic values as well as civil participation,enlightenment, responsibility and approachability are discussed, but also moreeffectivness orientated values.It is clear from the presentation how normative and democracy models putdifferent values in focus, with the consequence that other values are played downor pushed aside. Compared to imperial research in partnership ? by definition atype of network arrangement - and with a starting point in democracy andefficiency, the networks are discussed as political formation.In what sense can the actual existing network arrangements meet and fulfil thedefined political values? As no straight forward answer exists, there is an ongoingconflict between the political demand for slowness and the effectiveness demandfor flexibility and mobility..

The purpose of this thesis is to show how to use vulnerability testing to identify and search for security flaws in networks of computers. The goal is partly to give a casual description of different types of methods of vulnerability testing and partly to present the method and results from a vulnerability test. A document containing the results of the vulnerability test will be handed over and a solution to the found high risk vulnerabilities. The goal is also to carry out and present this work as a form of a scholarly work.The problem was to show how to perform vulnerability tests and identify vulnerabilities in the organization's network and systems. Programs would be run under controlled circumstances in a way that they did not burden the network.

The aim of this study was to examine former criminals? experiences of help and support of importance to leave a criminal life style. The study consists of six interviews with former criminals and earlier studies on the subject. These studies show that relapse in crime are most common among those who are socially excluded from society. They also show that important factors to end a life in criminality are for example a supportive social network.

SammanfattningDetta examensarbete har haft till syfte att ta fram nya metoder för automatiseradtestning och validering av information som skickas över CAN (Controller-Area-Network)i en tung Lastbil. Signalinnehållet realiseras i flertalet komplexa och distribueradesystem. En implementering har gjorts där loggad CAN-trafikdata från en HIL (HardwareIn the Loop) miljö automatiskt analyserats och testats.Testen har genomförts på två nivåer: funktionell och ickefunktionell. Där denickefunktionella delen har testat tidkrav på meddelanden med kompensation förtändningsstörningar. Dessutom har signalinnehållet testats för att finna ogiltigafelflaggor.

Internet is growing every day and this is leading to an address depletion of the current IPv4 addresses. A new version of IPv4, called IPv6, is the protocol for addressing computers that will deal with this problem. IPv4 and IPv6 are unfortunately not compatible with each other. IPv4 and IPv6 have to co-exist for a long time until IPv6 will be the dominant protocol.The purpose of this thesis is to examine how a transition could be done or more correctly, how to deploy IPv6 in an already existing IPv4 network. After that part of the report a case study at the local Internet service provider Junet AB will be conducted.

The purpose of this study is to increase the understanding of how venture capitalists can use their network in order to reduce information asymmetries between themselves and the venture management team. A qualitative approach with semi-structured interviews, consisting of open questions, have been used to receive gradate information in order to reach our explorative purpose. Our theoretical framework consists of relevant studies made on the dynamics of networks and the problems that can arise in the complex relationship between a principal and an agent. We have been interviewing two venture capital firms and therepresentatives from two business angel networks. We also made an additional interview with an influential financial actor in order to try to verify our conclusions Our conclusions are that an extensive network can be used by venture capitalists in order to; verify ventures? technologies, complement the competences in the venture management team, and arrange co-investments, resulting in reduced information asymmetries between themselves and the venture management team.

Uppsatsen syftar till att undersöka hur controllerns roll ser ut i ett stort tjänsteföretag samt hur denna samverkar med chefer på den operativa nivån. Vidare studeras även vilket inflytande controllern har på den operativa nivåns arbete.  Studien bygger på intervjuer med controllern och ekonomidirektören på PayEx Solutions, ett företag som utvecklar elektroniska betalningslösningar. Därutöver har en enkätundersökning besvarats av chefer på den operativa nivån inom företaget.Controllerns uppgifter är inte väldefinierad i litteraturen och den har idag många olika arbetsuppgifter beroende på vilket företag som den är verksam i. De olika förväntningarna personer inom en organisation har på controllern påverkar också controllerns roll.

Due to increasing regulations regarding new diesel vehicles particulate matteremissions the new Scania truck, Scania Euro 6, has been equipped with a particulatefilter. This component effectively stores the particles in the exhaust gas but must becleaned in order to prevent itself from clogging. The filter is cleaned through aprocess named regeneration which is a thermodynamic process in which thetemperature of the filter is raised through fuel supplied to the exhaust gas.The purpose of this thesis is to contribute to the development of improved controlstrategies of the temperature during the regeneration process through thedevelopment of model-based controllers. These controllers are designed in order tohave good performance in stationary as well as automatic regeneration.In order to develop these model-based controllers a model of the system isconstructed. The model is described as a linear thermodynamic grey-box model withflow varying parameters, showing good results in validation.The model provides a simulation environment during the controller design, which isfocused around the development of linear regulators with the exhaust gas mass flowas a scheduling variable whose size determines controllers? mode of operation.

Syfte: Att kartlägga samt analysera förändringar inom ekonomistyrningsområdet avseende controllerns roll, arbetsområde och styrmedel i svensk praktik Metod: En webb-baserad enkät skickades ut till 1000 controller i Sverige. Enkäten var utformad som en replikat från studien av Scapens et al (2002). Kvantitativa och statistiska metoder användes vid bearbetning av materialet Teoretiska perspektiv: Vi utgår ifrån att externa strukturella processer, s.k. förändringsdrivare, utvecklade av Lukka och Granlund (1998), som genom ekonomiska, normativa och tvingande tryck, samt efterliknelseprocesser, skapar homogeniserande praktiker i controllerns arbete. Slutsats:Några signifikanta skillnader mellan service- och industrisektorn i Sverige avseende controllerrollen, arbetsområdet och styrmedel kunde inte verifieras.