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.

Datorer och annan informations- och kommunikationsteknik har på flera sätt underlättat arbetet för många användare, men kan också bidra till kognitiva arbetsmiljöproblem och teknikstress. För att undersöka hur teknikstress uppstår på den moderna arbetsplatsen, där tekniken är en mobil och integrerad del av användarnas arbetsmiljö, behövs ett perspektiv på interaktionen mellan människan och tekniken som utforskar hela omgivningen. I den här uppsatsen föreslås ett distribuerat perspektiv på människans interaktion med teknik för att skapa en ökad förståelse för teknikstressens orsaker. Det distribuerade perspektivet har tagit undersökningen ut på fältet för att genom direktobservation och videoinspelning studera olika aspekter av interaktionen med teknik som över tid kan leda till teknikstress för användaren. Även en välbeprövad enkät om teknikstress delades ut för att samla in information om den kognitiva arbetsmiljön.

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.

A student at the Technical University in Jönköping was given an assignment from Falköping municipality. The assignment was to evaluate their IT systems 'users' awareness of information security and even present suggestions for IT-Users to improve their information security within Falköping municipality.Falköping municipality consists today of seven administrations. The target groups for the study of the information security are a pilot group consisting of 30 IT Users and four different managers from various administrations within Falköping Municipality.The purpose of this work is mainly to indicate an understanding of the importance of the information security knowledge among IT Users in Falkopings municipality, mainly those who use their smartphones and tablets for work-related activities.This work aims to answer the following questions:? How wide is the awareness of information security among municipality's IT users?? How can information security improve among the municipality's IT users?Theories that work consists of are mainly what information security is, how it is handled and the threats and risks that may create problems for the municipality, basically when IT Users use their smart phones and tablets.The Work Implementation started with sending surveys to a pilot group of IT- system users and the student even interviewed four general managers working in Falköpings municipality. Both the questionnaires results and interviews results are presented in diagram and text.The result from both surveys and interviews was very positive and it shows that the municipality investigated IT-Users are very aware and have knowledge about information security, when they use their smart phones and tablets.

The study aims to investigate the feasibility of small-scale electricity production with solar electricity systems, also known as PV (photovoltaic) systems, in Australia. Due to the global warming, sustainable energy has in recent years become an increasingly important issue, both internationally and in Australia. With one of the largest dependencies on fossil energy sources in the world, the country's abundant solar radiation is a possible solution to this issue.Both the technical and the economic feasibility of small-scale PV systems were investigated. On the technological side, the electricity generation, distribution and consumption systems were studied. On the economical side, the parameters that drive the profitability of a PV investment were investigated.

Detta examensarbete är utfört på Saab Training Systems AB i Huskvarna. Saab Training Systems utvecklar, tillverkar och säljer kompletta militära träningssystem.Syftet med arbetet var att minska ledtiderna, då korta leveranstider blir ett allt viktigare konkurrensmedel. Arbetet innebar en kartläggning av nuvarande reserv- och reparationsflöde samt att identifiera problem och komma fram till förbättringsförslag.Vidare har vi studerat reservdelslagrets lagernivå och dess kapitalbindning.Arbetet genomfördes med hjälp av intervjuer med berörd personal, observationer, enkätundersökning samt statistiska studier. Vi har även arbetat med Supply Chain Operations Reference Model som är en öppen referensmodell med vars hjälp man kan kartlägga, förändra och optimera sin verksamhet.Saab Training Systems har som mål att ledtiderna för reservdelsflödet och reparationsflödet skall vara 14 dagar, men i själva verket är det inte så. Dessa ledtider är idag längre, hur långa är dock oklart.De långa ledtiderna beror främst på att i flödena förekommer det mycket passiv tid.

Tillverkande företag har ett stort behov av att ett tillförlitligt informationsflöde stödjer det interna materialflödet. Det kan ske med hjälp av affärssystem, vilka är komplexa och verksamhetsövergripande informationssystem. Denna studie behandlar hur ett nytt affärssystem kan påverka det interna materialflödet i ett tillverkande företag. Syftet med studien var att undersöka vilka verksamhetsförändringar som sker vid ett affärssystemsinförande och vilka förändringar som uppkommer i informations-, arbets- och materialflödet i detta samband. Tyngdpunkten ligger i att förklara om informationsflödet, som genereras ur affärssystemet, via arbetsflödet, har haft en inverkan på materialflödet.

This thesis deals with the goods classification of the Nordic alcoholmonopolies, viz. Alko in Finland, Rúsdrekkasøla Landsins in the FaroeIslands, Systembolaget in Sweden, Vínbúðin in Iceland, andVinmonopolet in Norway. The focus of the study is the web pages of thecompanies (as they appeared April 10th 2011) and the printed pricecatalogue of Alko, from which information on class division has beenexcerpted. The emphasis lies on the division into product groups and theinformation about origin. Within these facets, which partly overlap insome of the classification systems, the principles of division and thehierarchical relations between classes are studied.

Optimizing energy systems is, in Sweden, as in many other countries, of growing interest. District heating systems are no exception. In 2012, 285 out of 290 municipals in Sweden had district heating in use and the majority of these systems have a higher return temperature than that which is possible with an error-free substation of day current technology. To, when possible, lower the return temperature is a way of increasing the effectiveness of the district heating system.This study means to investigate, through simulations and calculations, how big of a reduction in production cost a lower temperature in the city of Ystad?s district heating system would correspond to.

During 2007 the City of Stockholm installed five grid connected photovoltaic systems. The aim of this master thesis is to quantify the amount of produced energy and recommend routines to collect and analyse production data, to make production data accessible by the public and to gain experience for future installations.The total amount of produced energy until March 2009 is 227 000 kWh, with an annual rate of 150 000 kWh. The expected annual rate was 148 000 kWh.All system owners are positive about their plants and see economical benefits in scaling up such systems.The installations need very little attendance and maintenance, however it is recommended that an alarm function is installed for automatic feedback in case of a system failure. All future systems should be inspected during full operation to determine if the actual capacity is matching the installed capacity..

Six different Digital Proofing Systems from three different techniques have been evaluated as totechnique, printing quality, economy and usability. Digital proof from two paper qualities, coatedand uncoated, has been compared with references printed in offset, to see how good they match eachother. Only two Proofing Systems manage to print on reference paper. The other Proofing Systemsuse special paper for digital proof.Measurements and visuell judgement show that the Digital Proofing Systems visualise referencepictures with quite good quality. Proof optimised for coated paper visualise the colours with goodresult.

The aim of this essay is to examine three separate Swedish public libraries and their respective websites on the grounds of the usability sciences. I firstly had to summarize the main properties of the usability-field in order to gain an extended knowledge of its purposes and possible usage for today?s library systems. I was then able to apply the extended knowledge in the examination of the three library websites and the purpose of determining whether or not they were designed according to the standards set by the usability-sciences.Usability is a rather new science that deals with the dissection and examination of computer-based systems, in order to find the key components that make systems user-friendlier. With user needs being the main focus of its research, usability tries to meet all the different needs of the modern user and construct systems that are less system-centered and more user-centered.

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.

The purpose of this thesis is to investigate if there are environments that use some kind of central authentication system within institutions/schools. The hypothesis is that an institution not using a form of central authentication service has more need for maintenance and as such is considered a higher cost for the organization. The gathering of data has been done through interviews with technical personal at Blekinge Tekniska Högskola and Linköpings Universitet. Based on the technical background of the authors, and the system limited to discussing Windows and UNIX operating systems, a discussion and analysis of the systems working today has been done, with emphasize on the hypothesis..

The Swedish energy system will be influenced by many future changes, such as energy and climate policy objectives. The installation of more renewable electricity could increase by using solar energy. Over the recent years, grid-connected photovoltaic (PV) systems have increased dramatically in Sweden, partly due to various support systems and compensation models. These support systems have been designed to make it easy for individuals and businesses to invest in self-generated electricity and thus contribute to the transformation of the energy system.The introduction of a higher proportion of solar energy may in turn affect the Swedish electricity system. This could mean that the electricity companies will be facing a number of changes in the near future.