Vid idrifttagning av banljussystemet på Bana 3, Arlanda flygplats, uppstod vissa driftsproblem. Problemen yttrade sig så att de regulatorer, så kallad CCR (Constant Current Regulator), som försörjer informations- och anvisningsskyltar, löste ur för framförallt överström. Det berodde på att kretsen var ovanligt oscillativ. Problemen uppstod enbart på de kretsar som hade skyltar som last. Som belysning i skyltarna används lysrör.

Flera undersökningar har visat att svenska elevers kunskaper inom områdena taluppfattning och aritmetik har blivit sämre. I denna uppsats står därför taluppfattning, med multiplikation som utgångspunkt, i fokus. Syftet med det här arbetet har varit att analysera hur olika läromedels framställning av räknesättet multiplikation samt strukturering av inlärningen av de grundläggande multiplikationskombinationerna kan påverka elevers möjlighet att utveckla god taluppfattning. För att svara på vårt syfte har vi gjort en läromedelsanalys av fem olika läromedel i matematik, avsedda för åk 1-3. Resultatet pekar på att några av de analyserade läromedlen framställer multiplikation på ett begränsat sätt vilket kan antas ha negativ inverkan på elevers möjlighet att utveckla förståelse för räknesättet multiplikation och därmed också på taluppfattningen.

This is a literature study of learning mathematics in general and algebra in particular. The goal is to explore and investigate the learning procedure and the difficulties pupils have with their understanding. Furthermore, to understand what qualities is requested of pupils in their effort to be successful in mathematics and algebra. I have also explored different pupil thinking styles in mathematics and what consequences that has on their learning and understanding. Moreover, I have investigated some different learning styles and how they can be addressed in teaching of mathematics in general and algebra in particular.

The European identity plays an important role for the EU and especially within its will to further integrate its citizens, hence it is a way for individuals to not only identify with its nation, yet also with Europe. Previous research has already established that an individual can possess two territorial identities, such as a national and a European identity, above all it has established how the identities can equally interplay. Further it has been explained how territorial identities are composed of two aspects: civic and cultural. While the previous research has stated how the European identity possesses both aspects, though to varying degrees, little attention has been put to examine how individuals who possesses multiple territorial identification, defines its European identity. This study therefore aims to study which aspects, civic or cultural, individuals with a citizenship who possess multiple territorial identification, assign their European identity.

Studien går ut på att jämföra tre olika styrsystem för ventilation, nämligen CAV (Constant Air Ventilation), VAV (Variabel Air Ventilation) och DCV (Demand Controlled Ventilation). Dessa styrsystem ställs mot varandra i tre olika lokaltyper, med syfte att identifiera det mest energieffektiva styrsystemet. Ett syftet med studien är också att upptäcka vid vilka flöden det lönar sig att arbeta med VAV- och DCV-styrsystemen..

Denna rapport är ett examensarbete på C-nivå som görs i sammarbete med teknikkonsulten Ramböll. Det vanligaste sättet att ventilera en byggnad idag är med så kallad CAV-ventilation (Constant Air Volume). Denna metod bygger på att ett luftflöde bestäms för rummet och upprätthålls med konstant flöde. En annan metod är så kallad VAV (Variable Air Volume) som bygger på att flödet varierar efter behovet. Anledningen till varför man väljer VAV istället för CAV är att med CAV finns det ofta en stor risk att man överventilerar ett rum eller byggnad, just på grund av att flödet är konstant. Problemet med VAV är att det är en högre investeringskostnad än för CAV så metoden lämpar sig bara där energibesparingen är så stor så den täcker mellanskillnaden i pris.

?Medicines are available in different forms and often have different types of compound components. More and more drugs are found on the market. This means that professionals who handle different medicines must have access to more and more information.The information available includes information about side effects, active substances, interactions and pill identification. You may want to access different information, depending on your profession.

The use of marketing research panels are a more and more frequently used source of information for studies within many different branches. The purpose of this report is to investigate the demographic composition of panels and compare it with the population of Sweden, a possible change in behaviour of respondents, and if the source of recruitment is the cause of possible differences in study results. The study was commissioned by Norstats Linkoping office. Sources for the data material include Norstat?s recruitment process and their two main panels with different recruitment sources.

Multi-brand portfolios are characterized by comprising many brands in the same product category. Companies that have chosen to organize their products according to this strategy are facing both possibilities, such as expanding the accessible market size, and challenges such as how to organize the brands, their individual roles and their relation and position to the other brands in the category to maximize revenues. To address these aspects of multi-brand portfolios, I have investigated four product categories where multiple brands are represented at Mölnlycke Health Care, Unilever, Fagerhult and L?Oréal; how the multi-brand portfolios are organized, how the segmentation, positioning and product differentiation are done and what advantages and disadvantages that are associated with this strategy. My conclusions are that multi-brand portfolios can be organized in many different ways and to become successful, they have to be set in relation to the company?s whole brand architecture.

Popular Culture is inherently political and the connection between popular culture and world politics in particular is something that has been established through years of research by multiple scholars. In this essay, my aim is to analyze how American Power is represented in popular culture. This is done in context of the decline of the American led liberal hegemony and a new Multiplex world order. A world order with multiple influential actors with varying levels of power. To analyze the way popular culture portrays American power, I have used the movie Top Gun: Maverick (2022) as an example and analyzed scenes from the movie.

The purpose of the study is to investigate the possible effects of an unstable ventilation system and its influence on energy use and thermal comfort. The report also explores how qualified personal working with HVAC view and handles system control.In order to meet the requirements in energy efficiency and a comfortable indoor climate control regulation is a prerequisite. With optimized increased complexity of the climate systems, it becomes more challenging to control the system and the risk of unstable control increases. No previous studies about what affect an unstable system can have on energy use and thermal comfort have been found.The report is based on several tests were the controlling variable has been increased until the system becomes unstable. Two different types of unstable systems have been investigated.

The purpose of the study is to investigate the possible effects of an unstable ventilation system and its influence on energy use and thermal comfort. The report also explores how qualified personal working with HVAC view and handles system control.In order to meet the requirements in energy efficiency and a comfortable indoor climate control regulation is a prerequisite. With optimized increased complexity of the climate systems, it becomes more challenging to control the system and the risk of unstable control increases. No previous studies about what affect an unstable system can have on energy use and thermal comfort have been found.The report is based on several tests were the controlling variable has been increased until the system becomes unstable. Two different types of unstable systems have been investigated.

Word-of-mouth marketing (WOM) has been considered as one of the most effective marketing tools, yet the least understood. While its lucrative effects have been well proven in academic studies worldwide, little is yet known of why consumers engage in WOM, and what factors actually drive this sought-after behavior, particularly in an online context. While today's research lacks holistic views on the simultaneous effects of multiple WOM-drivers, this paper takes on a meta-analytic approach by building on the pertinent literature to construct an aggregated model, including several previously acknowledged drivers divided into two categories: (1) Brand related drivers and (2) Personal and situational drivers. The authors then empirically examine what drivers are the most influential on WOM in an online social media context. By doing so, this thesis does not only contribute to marketing managers' better understanding of online communications management, it also sheds light on the theoretical knowledge of the behavioral drivers of WOM.

The problem of separating a non-rectangular foreground image from a background image is a classical problem in image processing and analysis, known as matting or keying. A common example is a film frame where an actor is extracted from the background to later be placed on a different background. Compositing of these objects against a new background is one of the most common operations in the creation of visual effects. When the original background is of non-constant color the matting becomes an under determined problem, for which a unique solution cannot be found. This thesis describes a framework for computing mattes from images with backgrounds of non-constant color, using Bayesian statistics.

Syftet med denna systematiska litteraturstudie var att beskriva hur livskvaliteten påverkas hos personer med Multipel Skleros (MS) och vad som kan göras för att öka livskvaliteten. I syftet ingick även att beskriva hur personer med MS upplever fatigue som är ett av huvudsymtomen av sjukdomen samt vad som kan göras för att lindra följderna av fatigue. Artiklarna har sökts i databaserna Elin@Dalarna och Cinahl, tillgängliga via Högskolan Dalarnas proxyserver och granskats med hjälp av en granskningsmall för att säkerställa att de var av en god kvalitet. Sökord som användes var: ?multiple sclerosis?, ?quality of life?, ?nursing? och ?fatigue?.