The control of indoor temperature must be able to handle large time constants and both measureable disturbances like outdoor temperature, and non-measurable disturbances, like waste heat from appliances. Due to cheaper microcontrollers (small computers with designated tasks) with better performance, more advanced and computation-demanding methods for control can be used.In this thesis, Generalized Predictive Control (GPC) has been implemented and tested on a theoretically derived model of a house. GPC states that a model of the system is estimated in every sample, and the control is carried out simultaneously, based on predictions of the model. Disturbances like solar radiation can be estimated and used in the control as well. The control signals are determined by quadratic programming, which makes it possible to consider conditions, for example limitations on the control signals.GPC requires a number of parameters to be defined, like model order and control signal penalty, but is relatively robust for variations in them.

Bankruptcy is a problem for the society in form of high costs for including suppliers, customers, employees, investors, banks, insurance companies etc. The purpose of this study is to confirm or dismiss a bankruptcy prediction model that has been developed in a previous Swedish study, in order to predict bankruptcy with help of specific key figures. The model has only been tested in a larger perspective where the population consisted of all small firms in Sweden, in this study the model´s reliability is tested by that it instead been applied to a minor perspective, where the population only includes Stockholm. With a quantitative approach of 12 different key figures from a total of 60 Swedish smaller registered companies in Stockholm between the years 2005-2007, has been studied. The companies are divided into two groups, companies with good financial health and companies that have ended up in bankruptcy.The results shows that the model is applicable in a smaller population, but some of the key figures do not generate essential or any type of information about bankruptcy, but the majority of the key figures in the model did.

Drinking water is produced from raw water and is either from groundwater or surface water. This thesis aims to find out if the cleaning process of raw water is sufficiently effective. This is important because consumers are otherwise at risk of waterborne infection caused by pathogens. There are three groups of pathogens; bacteria, virus and parasite. These have different characteristics which mean that they require different water treatment to be separated.

The purpose of this study is to examine the change in consumer behaviour regarding the intention towards buying fruit when the layout of the fruit section has been altered. We want to increase the probability of making impulse purchases by altering the layout. In our study we have combined structured quantitative observations with structured quantitative as well as qualitative interviews, with secondary data in the form of sales data from two selected ICA-stores. We chose to use this triangulated approach in order to cross-examine our findings and overcome the limitations of one method by the use of another. Further, the Latin square design was used for the observations as a means to acknowledge the calendar effect during the experiment.

A frequently asked question in real estate marketing is at what time of the year it is optimal to invest or sell. The aim of the project was to answer this question and to generate a prediction model over real estate located in the centre of Stockholm that takes seasons into account. With acquired sales statistics in Stockholm between 2010 and 2013 it was possible to perform a linear least square regression, also known as Ordinary Least Square (OLS), with describing qualities and season of sale as parameters. Statistical problems such as Multicollinearity and Heteroskedasticity have been taken into account when deriving the model. The result was a highly accurate prediction model indicating the profitability of investing in real estate during the summer and selling during the autumn..

Nowadays the majority of the thinnings made in Swedish forests are done by machines, harvesters and forwarders. The most common model in thinning with a harvester is strip-road operated thinning and stand-operated thinning with one intermediate passage between the strip-roads. This study is a time study with some quality follow ups on a strip-road operated thinning model, a stand-operated thinning model with one intermediate passage between the strip-roads and a stand-operated thinning model with two intermediate passages between the strip-roads. The machines in the study were a small harvester (Forestline MPM C90) and a medium sized forwarder (Timberjack 1110). The study was made in Litsnäset outside the city of Östersund in Sweden and was made during the autumn 2007. In a lodgepole pine stand six study units (0,6 ha) were thinned with the three different models, two study units per model.

The goal of this project was to make the requirement process at the Swedish Coastguard more effective. The first step to achieve this was done by locating bottle necks in the process with value stream mapping method. The result of this study showed that the biggest restriction in the requirement process was while examining older requirement documents to understand what elements were suitable for the particular project. This was followed by a study of literature, interviews and theory of Lean Production with the ambition to investigate how the requirement process was handled on other companies and how to improve the process on the Swedish coast guard. This led to a number of potential enhancements of the process which later was evaluated. Requirements written by different people in different organizations were analyzed in order to sort out if there were some similarities? which could be used as standard elements in a future standardization of the process.

This master thesis covers the development of an automatic tuning process for the existing speed controller for drive systems. The drive systems are resonant two-mass systems where a motor is used to drive a load connected by a shaft. The developed method relies heavily on system identification and the construction of a complete mechanical model of the process. With this approach, the common problem with poor load speed control that derives from measuring only the motor speed can be addressed and solved for a majority of such processes.The automatic tuning method has along with general test functions been implemented in a complete tool for automatic tuning, testing and performance evaluation and reporting for drive systems..

This paper investigates the ongoing talks between the Swedish libraryassociation (Svensk Biblioteksförening) and the Swedish Publishers?Association (Svenska Förläggareföreningen) regarding a new payment modelfor e-book loans in Swedish public libraries. The current model allows an ebookto be lent an infinite number of times and for each loan the library paystwenty Swedish kronor to the supplier, Elib, which in turn passes half of thatsum on to the publicers.The reason for the talks is that both libraries and publishers have reason to bedispleased with the current model. For the libraries it has proven to be aneconomic challenge, for the already strained library economies, sincepayment is made directly by the individual library from the media budget.The publishers also have reasons to want a change of model since thecompensation they receive from the libraries is not enough for them tocontinue publishing e-books and making a profit. They argue that to protectthe commercial e-book market the principle of free loans has to be replacedby a model that introduces ?friction? in the form of limitations on how manytimes a title can be loaned.This study is based on interviews with representatives from both sidesinvolved in the talks, along with a representative from Elib and a librarian.An analytical tool has been constructed by the author to aid in the process ofuncovering arguments and standpoints in the interviews.

Internal working models of attachment are claimed to be unconscious structures operating outside the conscious awareness. Existing measures of attachment are almost exclusively explicit, either self-reports or interviews and it is questionable whether these instruments are able to tap into unconscious attachment attitudes. The main purpose of the present study is to develop Implicit Association Test (IAT) tools for assessing adult attachment and to examine their construct validity. Two sets of implicit attachment measures, based on the two-dimensional attachment model (Bartholomew & Horowitz, 1991), were developed. Convergent validity was assessed by examining (1) the relationship between implicit model of self and implicit self-esteem and (2) the relationship between the implicit model of other and implicit sociability.

Being a successful global business player depends on firm?s ability to mobilize its resources worldwide. For this reason getting the right people with the right skills, at the right time, at the right place is crucial and makes expatriation one of the most important issues of today?s business world agenda. In terms of expatriation; national culture provides the context for the whole process.

In this final thesis two simulation models have been integrated. The simulation models are models of JAS 39 Gripen?s fuel system, software and hardware. The time consuming and costly work to develop software has made the department of fuel system to build two models in Xmath/Systembuild. The software model also simplifies the comprehension of how the software in the control computer of the fuel system works.

This report brings up the question - ?Is BIM profitable when planning a single-family home??.The methodology for finding the answer to this question is firstly to state the definitions of BIMand the company that is projecting by using the BIM-model. The answer is then obtained byanalyses of the factors of profitability with respect to: time, opportunity of revision, problemvisualization, preference adjustments and energy. A BIM-model has been made simultaneously asthe writing has proceeded to get a perception of how a BIM-model really matters for the analysis.The analysis shows that the answer for the question depends on further factors. The factors thatare mostly discussed are the company?s intentions and the complexity of the house.

Background Swedish nurses are required by law to document nursing care. Studies have proved scarce in nursing documentation with regard to written language, the nursing process and the nurse´s caring perspective. Educating nurses in using the VIPS model have improved nursing documentation. Few studies have included nursing documentation of psychiatric care.Aim The aim of this study was to describe nursing documentation within psychiatric care of inpatient settings.Method A quantitative, retrospective descriptive research design was applied. A total of 60 nursing journals from a psychiatric department of six wards were studied.

Pre-workout (PWO) is one, fast-growing, supplement on the market that promise fat burning, bigger muscels and energy and by buying these expensive supplements, you can get your dreambody faster than others. This study is mainly about researching why people use PWO and what experiences they have about using these supplements. By using a qualitative method I have found out that the participants mainly uses PWO to get energy and focus. This study also shows that my participants thinks that there is a difference in energy between using and not using PWO..