This thesis examines a possible control strategy to minimize flow fluctuations in Uppsala?s district heating system. High variations in flow rate may lead to complications caused by hydraulic constraints in the district heating system. These complications, such as inadequate pressure and temperature levels, increase the risk of heat delivery failures. It is therefore important to avoid such situations both for the producer and for the customers.Typically, the forward temperature is controlled by using a rough correlation with respect to the outdoor temperature.

Today?s political debate on environmental issues and environmental thinking, alongside the Swedish presidency of the EU and Climate Conferences shows that the environment is an important topic. Environment is important, not only in politics, but also for companies and the demand of environmental strategies and environmental reports has increased. This leads to an increased pressure on firms to begin to report on environmental concerns and to create active systems for environmental thinking.The aim of the present study is to examine why firms in the transport sector, mainly lorry transports, reports environmental aspects and what drives these companies to create these reports.Based on stakeholder and institutional theory we aim to examine to which extent stakeholders affects the environmental accounting and reporting. We also aim to explain how the organization is influenced to incorporate external and societal environmental procedures.

Lättelement located in Örnskoldsvik AB is one of Sweden's leading companies in the development of building elements in the form of roofs, walls and floors made ??out of light beams. The company has clients from Lund to Kiruna, and from Norway. This means that the elements have high standards when they have to take many different loads from wind and snow due to such wide geographic variation.The roof elements are structured so that the main body is made of light beams with an I?profile.

Background: The nursing profession involves meetings and situations which can be stressful. The work environment can cause additional stress in the form of time pressure, lack of support from colleagues, management or disgruntled family members and patients. This places the nurse in a position that requires a sharpened ability to handle stress. It can become overwhelming and unmanageable and cause a serious threat to the nurse's health and wellbeing. To handle stress the nurses uses different coping strategies.Aim: The aim of the review was to gain a better understanding of how nurses deal with occupational stress.Method: A systematic literature overview study based on eleven articles, including both qualitative and quantitative studies.Results: Nurses deal with stress in different ways based on their own resources.

The overarching goal of this paper is to explain the intensive occurrence of partnerships ? regarded as a specific organizational structure ? in the formulation and implementation of Regional Growth Programs.By using theoretical concepts from new institutionalism, the paper tries to examine the explanatory capacity of this theory in the specific case of partnerships. The basis is a skeptical stance towards the conventional interpretation that views partnerships as rational organizational tools. Hence, the purpose of the paper is also to compare our own institutional explanation with the conventional.The paper finds that the occurrence of partnerships can be understood as the effect of an intensive institutional pressure. The government has, in what we regard as the institution for regional development, prescribed the partnership as a rational solution ? a rationalized myth - to the regional growth problem.

Recent years have been very turbulent for most private equity firms. Especially the financial meltdown in global economy has affected the industry, but also the public pressure has made private equity houses change their control strategies towards more conventional methods used in public companies. This thesis aims to put light on the control methods used in listed private equity houses which use a buyout strategy. The paper describes how the control methods change over the different phases the asset experience and how different value generating strategies use altered control methods. Using Merchant's (2003) framework for management control systems and Berg and Gottschalg's (2004) research on value generating strategies in buyouts the thesis shows that action controls as designing instructions for the board and a business plan, together with goal alignment is the commonly used control strategy directly after the acquisition.

The purpose of this degree-project was to investigate the possibilities for primary air preheating into the two smallest waste incineration boilers of Halmstad Energy and Environment. The investigation is a pre-study which has the primary goal to evaluate technical and financial offers from companies that manufacture primary air preheater, and investigate if it is technically and financially profitable to do a purchase on primary air preheaters in the future.In the pre-study it is proposed that it is most efficient to have individual primary air preheater, one for each incineration boiler and the primary air are also proposed to be preheated by hot water in the pre-study. Further in the pre-study it is proposed that the heat-exchanger should have plain tubes instead of finned tubes, to avoid getting dirty fast. The space in the boiler-room is limited, and therefore the major problem was to fit in the primary air preheaters into the boiler-room. By comparing the different offers from the companies, the result in the pre-study shows that the offer from the company C.A.

The purpose of this degree-project was to investigate the possibilities for primary air preheating into the two smallest waste incineration boilers of Halmstad Energy and Environment. The investigation is a pre-study which has the primary goal to evaluate technical and financial offers from companies that manufacture primary air preheater, and investigate if it is technically and financially profitable to do a purchase on primary air preheaters in the future.In the pre-study it is proposed that it is most efficient to have individual primary air preheater, one for each incineration boiler and the primary air are also proposed to be preheated by hot water in the pre-study. Further in the pre-study it is proposed that the heat-exchanger should have plain tubes instead of finned tubes, to avoid getting dirty fast. The space in the boiler-room is limited, and therefore the major problem was to fit in the primary air preheaters into the boiler-room. By comparing the different offers from the companies, the result in the pre-study shows that the offer from the company C.A.

The purpose of this work is to design and construct a device able to measure the mechanical attrition of oxygen carrier particles. Those particles are used in chemical looping combustion and in the present situation there is a lack of knowledge in how the attrition process work and in which extension. To find already tested solutions trying to answering this problem a literature study wascarried out and the best solution found was the so called Grace-Davison Jet-Cup method. This method is supposed to emulate the attrition caused by a cyclone separator and its advantages are that it is possible to use small test amounts, 5-10 g, and a thirty minutes long test will be enough to acquire useable results. An device was designed based on the Jet-Cup method with some slight modifications.

Today we have more game species than ever before in our landscape, both regarding number of species and number of individuals. The increasing number of wild species is an increase in game recourse for the countryside. The increase of game species, however, has negative effects on forests and agriculture land. The negative effects for forestry are damages on economic important trees, due to losses in production and quality. However there are ways to decrease the damage on valuable and important trees.

Unhealthiness is not just a damaged back or asbestos. The fact that mental ill-health seems to increase in our society is well known. Statistics from Arbetsmiljöverket proves a fourfold increase of work-related disorders since 1997. These are primarily caused by organizational and social factors, 60% are considered caused by stress and a heavy workload. Sick leave due work related fatigue and depressions are scarily common today.

Hypertoni är en folksjukdom som drabbar en femtedel av den svenska befolkningen. Orsaker till hypertoni kan vara livsstilsrelaterade, som stress, övervikt eller fysisk inaktivitet. Distriktssköterskor har som uppdrag att kontrollera patienters blodtryck, ge stöd och rådgivning till förändrad livsstil. Detta för att främja hälsa och förebygga hypertoni eller förbättra ett förhöjt blodtryck.Syftet med examensarbetet är att sammanställa befintlig kunskap från litteratur om distriktssköterskors hälsofrämjande omvårdnadsåtgärder till patienter med hypertoni.Examensarbetet är en litteraturstudie där kunskap från 12 vetenskapliga studier förts samman till ett nytt övergripande resultat, en metasyntes. Resultatet visar att de hälsofrämjande omvårdnadsåtgärder distriktssköterskor utför till patienter med hypertoni sker som Hälsoutbildning på standardiserat eller personcentrerat sätt.

The purpose of this study was to look for tendencies that social media can contribute to exposing users to a stronger perception of opinion polarization, and further to see if the daily presence of social networking sites can put normative pressure on the users. The study was made using a survey with participants from Umea? University during the time frame of november-december 2014. The theoretical framework behind the study was mainly drawn from The Spiral Of Silence by Elisabeth Noelle-Neumann and was further supplemented with more current research, studying the effects from The Spiral Of Silence in the modern and more fragmented media landscape that exists now then when her theory was written. Further theoretical tools for analysis of the results came from Michel Foucault and his discussions in Discipline and punish, specifically his views on how surveillance can be discontinous in practice, but still permanent in it?s effects.The results of this study indicates that social media users tend to isolate themselves from uncomfortable opinions, and do not follow or read opinions they do not already agree with.

The purpose of this degree-project was to investigate the possibilities for primary air preheating into the two smallest waste incineration boilers of Halmstad Energy and Environment. The investigation is a pre-study which has the primary goal to evaluate technical and financial offers from companies that manufacture primary air preheater, and investigate if it is technically and financially profitable to do a purchase on primary air preheaters in the future.In the pre-study it is proposed that it is most efficient to have individual primary air preheater, one for each incineration boiler and the primary air are also proposed to be preheated by hot water in the pre-study. Further in the pre-study it is proposed that the heat-exchanger should have plain tubes instead of finned tubes, to avoid getting dirty fast. The space in the boiler-room is limited, and therefore the major problem was to fit in the primary air preheaters into the boiler-room. By comparing the different offers from the companies, the result in the pre-study shows that the offer from the company C.A.

Bakgrund: Sällskapsdjur har ett flertal positiva hälsoeffekter på människor och det har lett till att viidag använder djur inom vården, främst hundar.Syfte: Syftet med denna litteraturstudie var att undersöka hundens användande inom vården, attbeskriva och förklara dess effekt på människor.Metod: Metoden var en litteraturstudie och elva vetenskapliga artiklar granskades. Dessaanalyserades och sammanställdes utifrån gemensamma teman.Resultat: Vårdhundar inom vården kan i de flesta fall reducera ångest och acceptansen av vårdhundär mycket god både bland patienter, anhöriga och personal. Minskning av blodtryck ochhjärtfrekvens råder det delade meningar om, då vissa studier visar en minskning av dessa och andragör det inte. Vårdhundar kan användes till att vara motivationshöjande för patienten.Slutsats: Vårdhundar har många positiva effekter på människor, men fler studier behövs för att seom dessa resultat inte bara gäller för de grupper som har undersökts i studien utan även äröverförbara till andra grupper..