Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active databases is usually specified in ECA-rules.

Background: Our daily lives and personal interactions are increasingly featuring social media and social networks in particular. Topics regarding social media, its impact on society at large ? both on corporate as well as individual behavior ? has been the focus of many research papers. Personal use of social networks are regularly being mapped out by researchers aiming at clarifying concepts such as engagement, trust and interactivity, and mapped by companies seeking to maximize return on investment concerning their marketing efforts. The aim of our study is (i) to map how companies and/or organizations operating on the Swedish market use their company?s pages on the social media as a way of communicating with their followers and audience, as well as (ii) identifying whether ?Real-Time Marketing?, in our own definition, is used or not.Methods: The research methods used included both quantitative and qualitative content analysis.

Increased trade and eased policy restrictions have brought markets closer together. Prices at different locations are much likely to affect each other to a certain extent. Since the adaption of Common Agricultural Policy in 1995 the Swedish wheat market has been exposed to the world market and Swedish farmers are facing new challenges. A broader knowledge about market integration and price transmission will facilitate Swedish farmers, banks and politicians in making rational decisions. Therefore the aim of this research is to explain how global wheat prices are transmitted on Swedish wheat prices.

The Profession of Real Estate Agents has by tradition been a male profession. However during later years the profession has changed. It is now many young women that are pursuing a career as a Real Estate Agent.In the light of this background we have researched how Real Estate Agents employed by Fastighetsbyrån and Svensk Fastighetsförmedling perceive their profession from an equality perspective.The investigation has been limited to include the counties of Värmland and Närke and have been conducted by interviewing Real Estate Agents of different age and sex and the managers of the firms.The study show that the Real Estate Agents perceive their profession in a positive way and that the work is divided equal. However it emerged that there were a division regarding different real estate types in certain agencies. The Real Estate Agents believe that the gender of the manager is of no importance.

The visual complexity in real-time applications, like computer games, is increasing with customer demands on vissual apperance. This trend is supported by even better graphics cards from the hardvare industry. This must be taken into consideration when the architecture of a new graphics engine is to be designed. The engines renderer is responsible of generating a picture of scene data. The renderer must cope with increasingly more complex scenes, and must be able to render them depending on available hardvare capasity.

This thesis treats the subject of a complete steady state and dynamic model of the VSC-HVDC covering both the AC and DC system-side of the converter. The topology of the model is recreated after the scheduled transmission line in the south of Sweden, called SydVa?stla?nken. The topology covers both a simple two terminal connection as well as a multi-terminal one. This model is to be implemented in the power system simulation program ARISTO.

Virtualisering är en ökande trend där man istället för att ha en separat hårdvaruplattform förvarje system, så exekverar flera virtuella system på en och samma maskin. Dessa system kanha olika egenskaper och krav, exempelvis kan ett delsystem med hårda realtidskravinteragera med ett annat delsystem utan realtidskrav. Ett exempel på detta är ett industrielltstyrsystem där ena delsystemet samlar in tidskritisk systemdata i realtid medan det andradelsystemet utför icke tidskritiska åtgärder som är baserad på denna information, som tillexempel att grafiskt åskådliggöra systemstatus.Att dela upp system mellan olika virtuella delsystem ställer höga krav på delning av data. Ettsätt att dela data på ett säkert och strukturerat sätt är att använda sig av en realtidsdatabas.I detta exjobb har vi undersökt möjligheten att anpassa den kommersiella realtidsdatabasenMimer SQL Real-Time Edition för att användas i det virtualiserbara realtidssystemet INtime.Arbetet omfattar undersökningar av olika modeller för delat minne samt synkroniseringmellan systemen. Resultaten av dessa undersökningar har inkorporerats i en version avMimer SQL Real-Time Edition anpassad för virtualisering i INtime.

To render outdoor scenes with lots of vegetation in real time is a big challenge. This problem has important applications in the areas of visualization and simulation. Some progress has been made the last years, but a previously unsolved difficulty has been to combine high rendering quality with abundant variation in scenes. I present a method to mathematically generate and render vegetation in real time, with implementation in the scene graph Gizmo3D. The most important quality of the method is its ability to render scenes with many unique specimens with very low aliasing.

This report is introduced with a presentation of fundamental electromagnetic theories, which have helped a lot in the achievement of methods for calculation and design of microstrip transmission lines and circulators. The used software for the work is also based on these theories. General considerations when designing microstrip solutions, such as different types of transmission lines and circulators, are then presented. Especially the design steps for microstrip lines, which have been used in this project, are described. Discontinuities, like bends of microstrip lines, are treated and simulated.

This thesis has the overall objective to develop the optimum sealing system between the retarder and transmission. Today, there is a pressure-relief and two radial seals separation between the retarder and transmission. It has been found that carbon residue formation may occur between retarder axle and seal lips with, in some cases, leakage as a result.We have in this thesis tried to explain the phenomenon of carbon residue, how it is formed and why it can be seen just on the seals? A rig test was conducted where we show how friction, speed, transmission temperature and mitigation phases of the retarder affects temperatures in the sealing environment. Factors affecting the coke structure are reported, together with proposals for measures that provide a mitigating seal environment.

In recent time Hemnet has faced an intensified criticism because of the latest introduction of ad-fees, and not least because of the take-over regarding Swedbank Fastighetsbyrån and Svensk Fastighetsförmedling. There is a growing concern amongst real estate agents about the development for which the Swedish real estate advertising market is taking. Many of the competitors on the market that have previously experienced difficulties in establishing on the market now see their opportunity to make use of the situation that has emerged regarding Hemnet. By offering better and more lucrative terms they could potentially bring in enough real estate agencies to pose a real threat on the advertising market.Hemnet is part-owned by four organizations, Fastighetsbyrån, Svensk Fastighetsförmedling, Mäklarsamfundet and Fastighetsmäklarförbundet. All of which have a 25 percent share in Hemnet.

Real estate managers work in a hard branch with big competition and skeptical customers. For most people, buying a property is the biggest private purchase of their lives. This puts a big pressure on the real estate agent to make the process run smooth. But how does the customer know which real estate manager to choose? We have researched what effect the real estate managers clothing has on the customers? first impression and how clothing affects customers? choice of real estate agents.To answer our questions we´ve done 13 projective interviews with ten customers and three real estate agents, where we showed four pictures with the same person dressed in different styles.

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..

This report is an outcome of a master degree project at Linköpings University in co-operation with Micronic Laser Systems AB. The purpose with this master degree project was to investigate how to implement a receiver in a data transfer system. The system consists of several data channels, where every channel consists of three parts: driver, transmission lines and receiver. The driver send low amplitude differential signals via the transmission lines to the receiver that amplifies and converts it to a single-ended signal. The receiver has to be fast and be able to feed an output signal with high voltage swing.

The conservation of great apes faces many challenges, one of which is the threat of infectious disease outbreaks. Zoonotic transmission of respiratory diseases from humans to wild great apes has recently been confirmed. Since respiratory disease is one of the major causes of death in both gorillas and chimpanzees, this gives reason for major concern. Little is known about the risks of disease transmission from humans to great apes in natural environments, and there is a need for systematic risk evaluation. Researchers, conservation staff and tourists spend time in very close proximity of wild great apes, sometimes during long time periods, which poses a potential risk of disease spillover. However, the presence of researchers and tourists has been shown to decrease the risk of poaching, making the matter increasingly complex.