This study has been conducted in order to determine the existence of predictability for the Stockholm stock exchange. With this purpose the Random walk theory has been raised against the theory of mean reversion in order to determine which theory is the most substantial. Data has been collected from Nasdaq OMX Nordic and furtherly been processed using the statistical software EViews. Swedish listed companies? daily share values between 2000-2014 have been analyzed using two tests; an Augmented Dickey Fuller test and a Variance Ratio test.

 I uppsatsen undersöks effektiviteten av de tre nordiska aktieindexterminerna OMXS30, OBX och OMXC20 vars underliggande index representerar den svenska, norska respektive den danska aktiemarknaden. Analysen baseras på den svaga formen av den effektiva marknadshypotesen och den närbesläktade Random walk hypotesen. Aktieindexterminerna undersöks under perioden januari 1997 till december 2008 samt under perioder då den nordiska marknaden karaktäriseras av bull och bear perioder. Testresultaten av Augmented Dickey-Fuller (ADF) samt Kwiatkowski, Phillips, Schmidt och Shin (KPSS) testet tyder på att aktieindexterminerna följer en Random walk och att nordiska aktieindexterminer är effektiva under den undersökta perioden. Då testen utförs för de kortare bull och bear perioderna erhålls motsägelsefulla resultat vilket medför att slutsatser om huruvida aktieindexterminerna är effektiva under dessa perioder ej kan dras. .

Studiens syfte är att se huruvida OMX Stockholm 30 är svagt effektiv. Studien bygger på de kurser Stockholmsbörsen publi-cerar för OMX Stockholm 30. Vi har valt en strikt de-duktiv ansats. Utgångspunkten är Famas teorier om den effektiva marknaden, där vi valt att inrikta oss på den svaga formen av effektivitet. Vi genomför ett antal tester för att se ifall vi kan urskilja ett mönster i index-kurserna eller om priserna följer en ?Random walk?..

Syftet med denna uppsats är att undersöka två monetära modellers prognosförmåga för den svenska kronan. Detta är den första studie som utvärderar prognoser på den svenska kronan under rörlig växelkurs. Modellerna som används är ?flexible price monetary model? samt ?sticky price monetary model?. Modellerna jämförs dels med en Random walk-modell, men även mot varandra för att kunna påvisa eventuella skillnader modellerna emellan.

The forecast ability of four well-known exchange rate models for theSwedish krona is tested in this thesis. The models that are tested arethe purchase power parity, the real interest differential model, thesticky-price model and a productivity model. In addition to thebenchmark, the Random walk, they are also compared to each other.They are all tested on three different horizons one quarter, two quartersand four quarters. The mean squared forecast error criteria and thedirection of change criteria are used for evaluation of the forecastability. Only in a couple of cases are the forecast ability of thetheoretical based models significant better than the Random walk..

Many interactive products constructed today is not produced towards a specific targetaudience and how they will interact with the product. This master's thesis follows the designprocess in the development of the Let's Walk webapplication. In the designprocess has users of the webapplikation been identified, prototypes developed and an interactive version has been evaluated. The Let's Walk webapplication is a fully working system used to administrate Let's Walk, an exercise competition between companies. Experts and users have been involved to evaluate the Let's walk high-fidelity webapplication prototype.

Randomness is a complex area of computer science, where only pseudo random numbers are possible to generate algorithmically.This report presents established algorithms for random number generation by conducting a basic study of relevant literature, while testing distribution and speed of the algorithms contained within the C++11 Random library. The results are compared to the algorithm XORShift and a modified version of it. The study shows that the modified algorithm passes all tests in Small Crush, andthat the run time is shorter than for those in the Random library. The conclusion is that it is possible to, with simple means, modify an algorithm to outperform the algorithms of the C++11 Random library..

Many interactive products constructed today is not produced towards a specific targetaudience and how they will interact with the product. This master's thesis follows the designprocess in the development of the Let's Walk webapplication. In the designprocess has users of the webapplikation been identified, prototypes developed and an interactive version has been evaluated. The Let's Walk webapplication is a fully working system used to administrate Let's Walk, an exercise competition between companies. Experts and users have been involved to evaluate the Let's walk high-fidelity webapplication prototype.

Forecasting stock market returns is an interesting topic since more and more Swedes enter and invest in this market. Theory implies, however, that such exercises should be impossible. The aim of this thesis is to investigate the possibility to forecast future stock returns by looking at macroeconomic variables? history. The study is limited to the Swedish market as it is based on the OMXS30-index which represents the 30 most exchanged stocks on Stockholms¬börsen, the Swedish stock exchange.

Bakgrund: Den 20:e april 2010 inträffade en explosion på BP:s oljeplattform Deepwater Horizon i Mexikanska Golfen. Explosionen uppstod på grund av metangas som under högt tryck expanderade på plattformen och sedan antändes. Detta ledde senare till att oljeplattformen sjönk och ett stort okontrollerat oljeläckage uppstod på cirka 1500 meters djup.          Att explosionen i den mexikanska golfen har påverkat BP negativt och varit mycket kostsamt för företaget är uppenbart, börskursen hade som mest sjunkit med cirka 60 procent. Det kan vara intressant att undersöka huruvida denna katastrof, utlöst av en enskild aktör, också har spridit sig över till andra aktörer i Olja & Gas sektorn.Syfte: Syftet med denna C-uppsats är att undersöka huruvida BP:s katastrof i den Mexikanska golfen har påverkat andra aktörer i samma sektor (Olja & Gas sektorn).Metod: Sekundärdata presenteras som en kvantitativ ansats i form av siffror och för att kunna dra slutsatserna använder vi oss av en deduktiv ansats.I denna studie tillämpas en metodikteknik i form av en eventstudie, där beräkningar av den abnorma och förväntade avkastningen baseras på marknadsmodellen. Vidare har två hypoteser testats, där syftet med Hypotes I är att pröva huruvida information om händelsen i den Mexikanska Golfen påverkar andra företag i samma sektor som BP.

This study compares the sample variance of the mean in a simple random sample (SRS) and a systematic sample from a surface. The study also compares the prediction error variance in a SRS and systematic sample from a random field. Recommendations are presented on which method to use in the clearance and exemption process in the nuclear industry. The results indicate that quadratic systematic sampling outperformed SRS in most instances and proved to be especially efficient in the presence of a long-ranged covariance function and high sampling intensity (i.e. short distances between observations).

I den här uppsatsen testas huruvida Stockholmsbörsen är predicerbar, i motsats till den icke-predicerbara teorin ? Random walk theory. Till skillnad från majoriteten av tidigare studier, undersöker jag predicerbarhet för enskilda aktier, och inte bara som ett aggregerat fenomen i form av ett index. Resultatet av studien visar att Stochholmsbörsen som en homogen grupp inte gå att predicera. Däremot, då varje aktie undersökts i isolerad form, uppvisar majoriteten av aktierna ett predicerbarat beteende ? i form av Mean Reversion, alternativt Mean Aversion..

The aim of this study was to determine a method to habituate treadmill-naive Labrador Retrievers to walk and trot on a treadmill. 17 Labradors was equipped with reflective markers glued to the skin. Their motions were captured with six 240 Hz infra-red cameras as they walked and trotted on a treadmill three times a day for two days. Also the heart-rate was recorded. We then used QTM and custom built software to analyze the measurements.

Nature and culture are often described as opposites, but at the same time nature is often de-scribed as culture and past. This essay examines how nature and the past are culture. I study how 51 people make shifting distinctions between nature and the past in relation to culture, the present and the future. By using the concept of Orientation of Sarah Ahmed I analyze how the informants direct themselves against nature, past and culture through a questionnaire, ob-servations and walk-alongs. I discuss how their ideas about nature and the past differ with their different starting points and are shaped through their physical meetings with them.

Nature and culture are often described as opposites, but at the same time nature is often de-scribed as culture and past. This essay examines how nature and the past are culture. I study how 51 people make shifting distinctions between nature and the past in relation to culture, the present and the future. By using the concept of Orientation of Sarah Ahmed I analyze how the informants direct themselves against nature, past and culture through a questionnaire, ob-servations and walk-alongs. I discuss how their ideas about nature and the past differ with their different starting points and are shaped through their physical meetings with them.