Syftet med vår uppsats var att med hjälp av Model Confidence Set (MCS) finna de bättre presterande modellerna bland de mest ?kända? och undervisade volatilitetsmodellerna. Vidare har vi även rankat dessa modeller inbördes. Eftersom prognoser om volatiliteten är mycket viktigt vid prissättningen på derivat, i detta fall ett räntederivat, är ämnet ständigt intressant. Med Model Confidence Set fann vi ett set av bättre presterande modeller utifrån vårt urval av ursprungliga modeller.

There exist several known methods for calculation of radio coverage for ground-based systems. As far as we know there are no equivalent methods for the case of flying platforms when the altitudes and speeds are significantly different to those of ground-based systems. This thesis describes the theoretical concepts behind calculations of radio coverage for flying platforms. An investigation is made to sort out what is important and possible to employ in a model for simulations. A method is described and implemented in a program for evaluation of flying radio systems.

ABSTRACT Infertility is a medical condition that affects approximately 16 % of Swedish couples in childbearing age and is a condition found in both men and women. When a couple has been trying to conceive for more than 12 months without success they need to see a health care provider. Infertility can be treated with medicine, insemination or assisted reproductive technology such as in-vitro fertilization (IVF) and intra-cytoplasmic sperm injection (ICSI). The aim of this study was to validate a morphokinetic selection model, KIDScore? D3 Basic, against morphological selection model that is currently in use at the Fertility unit at University hospital in Orebro.

This bachelor thesis has the purpose to visualize and document the air movementsprovided by different ventilation principles in an operating theatre. The visualizationwill be made as simple as possible in a physical model. The model and thedocumentation should be able to use in educational purposes.The study is based on the two most common systems for airflow, currently used inoperating theatres. The first principle is displacement ventilation in which the air issupplied at low velocity along the floor. The second principle is vertical parallel laminarairflow in which the air is compressed like a piston from ceiling to the floor.A review of literature resulted in the choice of size, design, and scale factor for themodel, as well as choices of ventilation principles and airflows.

ABSTRACT Title: The new Public ServiceAuthors: Hanna Haeggström, Sara Marklund, Madeleine OlssonLevel: Bachelor thesis in Media and Communications Studies Supervisor: Olof HulténLocation: School of Communication and Design, University of Kalmar, spring 2008Language: SwedishNumber of pages: 55There is an ongoing change of the media industry where new types of media emerge as a result of technological advancements. The audience and their use of the media have changed where available range has expanded while the size of the audience has remained the same. For media companies this implies a fight for the audience, where the right approach is vital for keeping as well as attracting new customers. Public service is an issue under current debate and its future role in the media industry has been brought into question. This survey investigates the roll of public service in Scandinavia in a new and changing media industry and how they should act to be important for their audience.

The consumer society exploits the earth?s resources more than the earth itself has capability to produce. This over-consumption causes a mass production of products, which mean that more greenhouse gases are being emitted to the atmosphere. This is one of the reasons why the earth?s temperature is rising, where the result of it is worldwide disasters.

We have been looking at three different types of agriculture in Södermanland, in the middle east of Sweden. We call the different types for Intensive, Extensive and Mix. The purpose is to get an economic defensible plan for how to run different farm sizes. We also have been looking at the working hours and how many hours the different types will give. We have a farm called Taxinge Gods as our pilot farm. Taxinge Gods grow 407 ha land and is located 60 km southwest from Stockholm.

This essay is about the religious change that Jing-cult underwent 600-1500 A.D. It is a historical-critical essay based on literature studies, using Ha?kan Rydving?s theory of religious change. In chronological order, it will go through the religious change from ancient Japan to the late Muromachi-period when Shinto was created. It describes the early temple- cult, buddhism's mission to Japan and how the Jingikan was created.

In this essay we aim at finding an appropriate flash estimator of the quarterly Swedish private consumption (PK). With the aid of the statistics program TRAMO we study if monthly data from the consumer survey (HIP) and retail industry (DH) can be used in a transfer function model (TFM) to forecast PK. In the work of assessing the state of the market and the business trend, fast information from the national accounts is needed for making decisions for the economic politics in Sweden. A way to speed up the information process is to use leading economic indicators to asses this development. Another way to get information faster is to use a flash estimate.

I denna studie har vi haft som avsikt att jämföra två modeller som förklarar avkastningen på aktiemarknaden. Modellerna är Capital Asset Pricing Model (CAPM) och Fama-French trefaktormodell(FF3). Undersökningen har gjorts på Nasdaq OMX Nordic Stockholm över perioden 2002 till 2012. Vi har valt att göra denna undersökning för att se huruvida FF3 med två extra faktorer kan förklara avkastningen på aktiemarknaden bättre än CAPM. Sex portföljer konstruerades och vi har visat att FF3 statistiskt signifikant förklarar mer än CAPM för fem av sex portföljer.

Accounting for financial instruments can either be based on a transactions approach or an eco-nomic approach. Under a transactions approach instruments are reported at cost whereas under an economic approach instruments are reported at fair value. Hence, under a transactions approach realization becomes a criterion for recognizing fair value fluctuations as revenue whereas under an economic approach it does not. A mixed model is defined as a combination of the transactions approach and the economic approach insofar it records some accounting items at cost and other items at fair value. The mixed model gives rise to an issue commonly referred to as an accounting mismatch.

The aim of this thesis is to examine the occurrence of Cosmetic Earnings Management (CEM) among Swedish companies. CEM refers to the small upward rounding of reported net income to reach cognitive reference points. Important cognitive reference points are multiples of ten (N*10^x) of reported net income and rounding towards these has been documented in other markets around the world over the last 20 years. The occurrence of CEM on the Swedish market is studied using digital analysis, frequency testing and Benford's law. Firstly, reported net income of publicly traded companies between 1996 and 2010 is examined.

The purpose of this study has been to examine what it is in the situation that affects which leadership that is applied on the members of the organization. Our questions that we have explored were; What is it in the situation that influences the leadership applied on an individual or staff group? What similarities and differences have emerged by Hersey and Blanchards situational leadership model?Further, we used qualitative semi-structured interviews at the interview procedures with three managers and three employees. Hersey and Blanchards situational leadership model and Goffmans theory in the book "The presentation of self in everyday life" have been used as a foundation and inspiration in this study.We have found that circumstances like the size of the staff group along with the organizations financials and the resources affect the leadership behavior and how well it is matched with the employees. The function of the leaders position in the context, and the purpose of the situation influences how the leadership is formed.

Fuktskador på uteluftsventilerade vindar är ett ökat problem, i det mer miljömedvetna Sverige. Genom tjockare vindsbjälklagsisolering minskar både energiförlusten genom bjälklaget och uppvärmningsbehovet i huset, men hur många funderar på vad som händer med det förändrade klimatet på vinden och hur det kan påverka fuktförhållandena i utsatta delar av konstruktionen.Studier från Chalmers Tekniska Högskola har framställt ett fuktberäkningsprogram för uteluftsventilerade vindar vid namn Simple Cold Attic Model. Programmets funktion och potential har prövats i denna rapport genom en beräkningsanalys av en uteluftsventilerad vindskonstruktion. Försök till att förbättra fuktsäkerheten i konstruktionen har utförts och redovisas i rapporten. Studien har påvisat att den studerade konstruktionen inte är fuktsäker om den uppförs i Stockholmsområdet. Det visades även att aktiva val i konstruktionen kan förebygga fuktskador. Studien har påvisat vikten av inte beräkna med medelår för klimat och hur det påverkar beräkningsresultatet av mögeltillväxt.

Companies worldwide strive to reduce costs and capital tied up in stock. At the same time, the need for short delivery times requires efficient logistic flows. In order to meet customer demands an efficient warehouse activity is required.The purpose of this study is to develop a model for designing a warehouse system regarding to working environment and safety. The model is primarily designed and based on literature reviews of scientific articles and books, own knowledge and the authors previous work experience in the industry.The thesis has been done at Sandvik AB, the department Precision strip in Sandviken. Sandvik is a high-technology engineering group with advanced products and a world-leading positions within selected areas.