In Uppsala CHP Plant, there are six pressure reducing valves to reduce the pressure from 15 to 3 bars, before six absorption heat pumps. During the process the energy is conserved but losses occur in form of exergy. The aim of this thesis is to reduce the losses of exergy. This can be done by letting turbines replace the pressure reducing valves.In this thesis an investigation has been done of the conditions today, the conditions after the change from pressure reducing valves to turbines and a comparison of three different types of turbine solutions. The three examined solutions are one turbine, several helical screw expanders and several small turbines in parallel with asynchronous generators.The six absorption heat pumps have been divided into two groups; one group of four and one group of two absorption heat pumps.

Hyresbostadsfonder är en ny placeringsform i Sverige som erbjuder privatpersoner, företag och institutioner att äga hyresfastigheter och erhålla avkastning från förvaltningsöverskott och värdeökning. I denna studie jämförs aktie- och obligationsfonder med en simulerad hyresbostadsfond ur ett risk kontra avkastningsperspektiv. Fonden baseras på data över den svenska fastighetsmarknaden från Svenskt Fastighetsindex och Investment Property Database, därför att placeringsformen är ny och det råder brist på historisk data från verkliga aktörer.Målet med studien är att besvara om hyresbostadsfonder är ett konkurrenskraftigt alternativ till aktie- och obligationsfonder. Utöver finansiella jämförelser redogör författarna eventuella dolda risker och nackdelar med placeringsformen.Resultatet från studien visar att hyresbostadsfonden har presterat bättre än både aktie- och obligationsfonderna under perioden 1988-2008. Bidragande faktorer till denna utveckling har identifierats och redovisats.

AbstractDespite that e-business nowadays is established scepsis against it amongst consumers exists. We, as consumers, suppose that this skepticism is caused by bad communication from the e-business companies. This has lead to our suggestion that some con-sumers refrain from e-business because of bad communication or deficient trust.Our purpose with this paper was to investigate factors of communication between companies and consumers within e-business (B2C) from the consumers? point of view. We thereby have drawn conclusions regarding consumers? choice of e-business company.

Syftet med examensarbetet är att redogöra för hur ett system baserat påExcel kan migreras till en webb- och databasplattform. Initiativtagare tillarbetet är en avdelning vid Ericsson AB i Linköping. Avdelningen använderExcel till datalagring och presentation av testmiljöbeskrivningar ochönskade migrera detta Excelbaserade system till ett webbaserat dito. Någraav de problem som uppkommer vid migration är: nya säkerhetsrisker; hurdata ska ordnas i databasen för att uppnå sökbarhet och versionshanteringsamt hur presentation av data ska styras.För att svara på dessa frågor har vi utfört en förstudie och enimplementation av systemet Node Network Plan Database (NNP DB),vilket ämnar ersätta det Excelbaserade systemet. Rapporten beskriver hur:säkerhetsrisker har minimerats genom att införa lämpliga skydd; databasenhar designats för att uppnå sökbarhet och versionshantering; presentation avdata kan styras.NNP DB visar sig vara effektivare, ur ett tidsperspektiv, än detExcelbaserade systemet.

Most of today?s concrete structures that are built on site are mainly constructed in a traditional fashion with a lot of artisanal operations. One step towards industrializing the in-situ construction of concrete is to use prefabricated reinforcement. Through this method there can be a lot of savings when each bar doesn?t have to be placed and fixed separately on site.

Electronic availability of information resources has increasingly become an important part of academic libraries everyday vocation. This is a fact that puts impetus on the libraries to know more about the way in which electronic information is being dispersed and handled. This thesis aims to comparatively evaluate Uppsala university library´s own metadata system Summon with the publicly available equivalent Google scholar. The evaluation is based on Péter Jacsó´s theories on database evaluation which concretely puts focus on Summon and Google scholar via the use and application of ten different criteria. The uses of precision and relevance criteria were also implemented as additional evaluation tools.

The aim of this study was to determine the self-perceived learning needs in patients with Coronary Heart Disease (CHD). CHD is the leading cause of death worldwide. Poor compliance is one of the causes of rehospitalisation. Patients suffering from CHD need education in order to manage their disease and prevent readmission to hospital. As hospital stays diminish the time available for patient education is limited.

AbstractLean production has become one common concept within industries to make the work more effective and to meet today?s hard competition. A challenge for Chinese production is the threat from new low cost countries. It will become very difficult to succeed to produce to a lower cost than these countries; this led to that Chinese companies must develop new strategies, according to Lee and Zhou (2000). This will put China in front of new challenges and new strategies can be needed to retain their strong competitive advantages.

Syfte:Syftet med vår uppsats är att kartlägga nötköttsbranschen med avsikten att vidare utreda de bakomliggande faktorerna till varför det, i butiker, skiljer så mycket i pris mellan svenskproducerat och utländsk importerat nötkött. Metod:I vår uppsats har vi utgått ifrån en deduktiv ansats, med vissa induktiva inslag. Vi har använt oss av en kvalitativ metod, där vi har insamlat material främst via intervjuer. Teoretiskt perspektiv:Vi har använt oss av teorier i form av de fem konkurrenskrafterna och Strategic Cost Management. De fem konkurrenskrafterna möjliggör en kartläggning av nötköttsbranschen och genom Strategic Cost Management har vi analyserat värdekedjan, vilket köttet passerar igenom från producenten till butikerna.

Every year more than 6000 thefts, to a value of 1.5 billion SEK, are reportedwithin the Swedish building trade. Plus all the indirect costs of having theconstruction site standing still.SafeTool is a newly started company that will try to prevent this problem witha modern technology solution.The key to SafeTool?s solution is RFID ? Radio Frequency Identification ? andthe solution looks like this;All tools are stored in a container on the construction site. Every tool isequipped with a RFID-tag that uniquely identifies the tool. With antennas in thecontainer it is possible to detect when a tool is leaving the container and whenit comes back.

The purpose of this thesis was to create a strategic/tactical road access plan. This was done by designing an analytical method which gives the road manager a template to create long-term road access plans. The analytical method will help to identify and appraise roads to be upgraded and give information when it is time for building new roads. The study method involved developing an analytical method. The method was comprised of five main parts: the harvest plan, analysis of the road network, transport costs, quality and storage costs and finally, identification of investment alternatives.

The energy that the earth receives from the sun hourly has potential to cover a year?s energy demand in the world. Further, this type of energy is environmentally friendly, natural and free of cost. This report covers solar energy in an urban environment and consists of a case study of installations of photovoltaic cells in a part of the city of Stockholm. It is mainly the economic aspects that are covered but there is also a discussion about the practical consequences and the sustainability as a result of integration of solar energy in an urban environment. The aim of the study is to present results from economic calculations for utilization of solar energy in chosen buildings in Kungsholmen in Stockholm.

The task to this thesis has been to create an application, Katana-databas 1.0, for analysing c-code. The generated output gets stored in a data structure which content in the end of the program run gets written in a textfile which gets used by Katana. It's a tool for reverse engineering, developed by Johan Kraft at Mälardalens institute.Katana-databas has got the following limitations. (1) It can only handle preprocessed files, meaning it doesn't contain any rows beginning with "#". (2) Only complete files can be handled.

To regularly remove woody vegetation along the roadside of forest roads is an important part of the road maintenance, since the vegetation binds moisture in the road side and, thus, the removal makes the road drying faster with results in improved bearing capacity. Vegetation removal also makes it easier to upgrade the road by material recycling from the ditch and, moreover, the visibility along the road is maintained.The aim of the study was to evaluate what type of chain flail is the best and most cost-effective for removal of different kind of woody vegetation along forest roadsides.Time studies were made on two chain flails when removing woody vegetation in three different classes; easy-, middle- and heavy shrub removal. The studied flails were one light and rather simple flail named Optimal M160 and a heavier and more advanced flail named Slagkraft H210. The removal was made according to Holmen Skogs? specification and the quality of the cleaning was measured by objective belt inventory.The productivity was higher with the heavy flail within all cleaning classes.

The financial crisis in 2008, effected companies around the globe and forced them to change their operational strategies, in order to survive. Companies with international links needed to consider external effects and due to that adapt their strategies on a global level. Demands for goods and service were decreasing and companies could only manage the cost during a recession to not face bankruptcy. Organisations need to reconsider their optimal strategy as this will determine their future outcome when managing a crisis as the one in 2008. British Airways - Air Cargo is a global company with an international network which serves about 80 countries, with about 200 destinations.