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In this report the motor side of a converter driven AC-locomotive is studied and modeled. The motor side consists of an asynchronous electrical engine, an indirect self controller, a voltage converter, a Pulse Width Modulator(PWM) and the train mechanics. The converter is supplied with voltage from a DC-link. The link is connected to a line converter which transfers energy from the railway net to

As China’s Guangdong Province has been in the forefront of Chinese growth, and it is one of the biggest contributions to Chinese economy, this paper compares the development process of industrial structure between Mainland China Guangdong province and one of Asian four tigers’ Taiwan. This paper is aim to see if the structure components are similar or difference during the growth process. Taking a

Kommuner i Sverige har vanligen ett stort markinnehav vilket medför att deras försäljning av mark är central för byggnationen av nya bostäder. Utöver detta har kommunen planmonopol, vilket ger dem ensamrätt att besluta om markanvändningen. Dessa två faktorer ger kommunen makt att påverka och styra bostadsbyggandet i stor utsträckning. För nybyggnation av bostäder är byggherrarna beroende av att fåMunicipalities in Sweden usually have large land holdings, which means that their sale of land is central for construction of new housing. In addition to this the municipalities have planning monopoly, which gives them the exclusive right to decide on land use. These two factors give the municipality power to influence and control the construction of new housing extensively. When it comes to const

In this thesis, a new bridge type is proposed. It is a steel bridge with a slab of cross-laminated timber elements. The bridge is intended for road traffic, and it has a span length of 26 m. It aims to be competitive when a short construction time is important. Long construction time could be a critical issue when launching a bridge over a railway where disruption of traffic flow is associated wit

Machine learning and its application within finance have gained popularity the last decade. The traditional trading roles are changing rapidly and are being increasingly automated with algorithmic trading strategies, by proprietary trading firms, market makers, and other financial institutions. FX trading often involves strategies in the form of technical analysis – suggesting that the efficient m

Problem: • How much climate impact dose a general concrete bridge have today? • Which is the lowest climate impact you can reach with today’s best options? • Is it possible to build a climate neutral concrete bridge 2050? Purpose: Today climate change is a important and debated subject. The purpose of this master thesis is to compare today's emissions to what might be possible in the future. T

Aquaculture is an expanding industry, supplying closer to 50% of the total fish consumption. Commercialized fish production faces sustainability challenges which are important to address. Aquaponics uses wastewater from aquaculture to grow plants using hydroponics. This is a step towards making the industry more sustainable, but the practice is not straightforward. The plants and the fish thrive a

This thesis has as a purpose the investigation of sustainable requirements compliance with regards to competition in public procurement contracts. This paper looks into Directive 2014/24 and notably its primary law influence in order to understand the legal foundations underlying sustainability and competition. It showcases, firstly, that Article 18(1) wording and legal interpretation provides a l

The purpose of this project is studying heat transfer to indexable cutting tools during milling of a selection of titanium alloys, relevant to the industry. To achieve this goal, both experimental and theoretical models were contemplated to formulate the current thesis. The experimental set-up was designed and executed at Seco Tools AB, supporting the project as industrial collaborator. The therm

The emergence of gamification in the field of talent acquisition evoked the interests in researchers and practitioners alike. However, as research on this topic is still in its infancy, we sought to explore the intersection of both fields within a PSF to extend the perspective on the understanding of the use of gamification in similar contexts. The purpose of this research was to explore how gamif

Det finns i dagsläget ingen generell modell för arbets-gången vid fastighetsutveckling. Detta gäller såväl Stads-fastigheter i Malmö som för andra svenska fastighetsbolag i allmänhet. Problem kan uppstå för fastighetsägaren vid beslut av strategisk och taktisk art för beståndet. Dessa problem kan eventuellt härledas till ett bristfälligt besluts-underlag på grund av att något eller några delmoment

To accelerate the materials discovery and development process for a sustainable technology advancement it is imperative to explore and develop combined high-throughput material synthesis and analysis workflows. In this work, we investigate a method of combinatorial inkjet-printing to tune the composition of the inorganic cesium lead mixed halide perovskite solid solution, CsPb(BrxI1-x)3. The compo

OBJECTIVE Growth hormone (GH) deficiency is associated with insulin resistance and diabetes. The aim of the current study was to determine incidence of diabetes during GH replacement therapy (GHRT) and the effect of GHRT on fasting plasma glucose concentrations and HbA(1c) in adult patients with GH deficiency. RESEARCH DESIGN AND METHODS-A total of 5,143 GH-deficient patients (male 49.9%; mean age

Recent advances in high-intensity electron and X-ray pulsed sources now make it possible to directly observe atomic motions as they occur in barrier-crossing processes. These rare events require the structural dynamics to be triggered by femtosecond excitation pulses that prepare the system above the barrier or access new potential energy surfaces that drive the structural changes. In general, the

Can states by introducing taxes, change the way their citizens consume? Can states tax away the sins of their population? In this following paper, I have examined varies excise taxes in Denmark. More specificly I have analyzed Denmark’s tobacco- and alcoholtax and their failed sugar tax. How effective are they and what made the sugar tax fail? What are the correlation between the taxes and what ar

Rendering volumetric clouds is a compute-intensive process which makes it difficult to use in real-time applications. At the same time, the need for volumetric clouds is evident as game developers look for new places to increase the realism of their games. Skyboxes and flat textures work well in 3D scenes where the camera is expected to be far away from the clouds and not move over large distances

Historiskt sett har människor byggt sina hus med de material som den omgivande naturen gav. Både vass och lera är två sådana material som förekommer naturligt. Det som bl.a. skiljer dessa material åt är de processer som krävs för att de ska kunna användas som taktäckningsmaterial. Vassen skördas och torkas medan leran bearbetas och bränns för att slutligen bli en användbar produkt. I tidigare svenHistorically, people built their houses with the materials that the surrounding nature gave. Reeds and clay are two such materials occurring naturally. A difference between these materials is the processes required for them to be used as roofing material. Reed is harvested and then dried while the clay is processed and fired to finally become the useful product. In earlier Swedish history roofs we

The purpose of this composition was to examine which international and Swedish laws exist to govern the protection of asylum seekers claiming persecution on the grounds of sexual orientation. Additionally I wanted to look at what the need for such a right to refuge would be based upon, i.e. why asylum seekers ought to be granted such protection. In order to fulfil my objectives I based my material