Det här examensarbetet förklarar i olika stor utsträckning några av de vanligaste riskmåtten för marknadsrisker. Störst fokus får Value at Risk och de tre vanligaste metoderna att beräkna detta: Historisk simulation, Varians-Kovariansmetoden och Monte Carlo-simulation. Utvalda riskmått och funktioner har dessutom undersökts och förklarats för tre olika mjukvarupaket designade för att beräkna risk. Skillnader i programmen har lyfts fram, dissikerats och diskuterats..

This essay is a case study based on two sources of empirical data, qualitative interviews and responses from a questionnaire, which examines upper secondary school students? attitudes to history teaching in a museum context. The students? answers are further analyzed in relation to the concept of historical consciousness. Thus, history teaching in the museum, from a student perspective, and the students? capacity of expressing a historical consciousness in their answers, constitute the core of this essay.

The exhaust arrangement on a Scania V8 consists of one manifold at each bank connected to a twin entry turbine (8-2-2). A study in GT-Power has shown improved performance and reduced cylinder to cylinder variations using two manifolds at each bank in combination with a single entry turbine (8-4-1). This thesis work analyses the difference in performance shown in simulation and verify it by engine test.The initial work was focused on simulation in GT-Power. Investigating how exhaust manifold volume and pulses effects the turbine efficiency and the mean effective pressure during the gas exchange. To verify GT-Power simulations four engine tests with different exhaust arrangement have been made.The results from GT-Power simulation indicate that a larger exhaust volume improve the turbine efficiency.

Heat and power stations are often in need of optimizations. A simulation model is a tool for findingways to optimize the plant. The scope of this diploma work is to develop a simulation model ofBoiler 5 at Mälarenergi AB. Boiler 5 is a circulated fluidized bed boiler that was taken into service inyear 2001. Among the included parts in the boiler are cyclone, convection part andINTREX-chambers.

Examensarbetet syftar till att jämföra nya alternativ till olika system för användning i laborationer i reglerteknikkurser för olika studentkategorier. Det skall utredas vilket av ett antal alternativ till mjukvaruplattformar som är bäst lämpat att användas vid reglerteknikundervisningen i ITN:s reglerlaboratorium vid Linköpings universitet. Tidigare laborationer i berörda kurser skall även modifieras så att dessa kan genomföras i de nya systemen.Examensarbetet resulterade i en rad modifierade laborationer och system att tillämpa i dessa. De nya systemen medför att all reglering sköts direkt från en dator istället för tidigare variant med externa apparater som programmeras. På så sätt kan större fokus läggas på regleringen i sig och inte de system som tillämpas för att utföra den..

This thesis of 15 hp has been implemented at Halmstad University, in collaboration with Saab Dynamics in Linköping. Saab Dynamics is a company operating in the defence industry where competition is tough. This necessitates new ways to increase efficiency in the company, which is the basis for this thesis. Saab Dynamics wants to introduce simulation driven design. Since Saab Dynamics engineers have little experience of simulation, required a user methodology with clear guidelines.

Abstract:According to the curriculum of the Swedish school the pupils should develop their historical consciousness. The aim of this study was to find out which pupils develop this consciousness by listing to an historical novel, talking about that book and writing stories. The study went on for four weeks and the subject of the teaching was the Middle Ages. 28 pupils took part and a variety of methods were used: 1: questionnaire about the lives of the pupils, 2: Making observations of their attitude to the teaching and 3: story writing. The results show that the social background does not influence the development of an historical consciousness.

This thesis work contains a litterature study about electrical motors in general and how PWM-patterns for brushless DC-motors can be made. A suitable method has been implemented as a simulation model in VHDL. A simulation model of a brushless DC-motor which describes the phasecurrents, torque and angular velocity has also been made. The motor model made simulations easier for the complete PWM-system. The design was synthesised and tested with a prototypeboard including a SPARTAN II FPGA.

This thesis of 15 hp has been implemented at Halmstad University, incollaboration with Saab Dynamics in Linköping. Saab Dynamics is a companyoperating in the defence industry where competition is tough. This necessitatesnew ways to increase efficiency in the company, which is the basis for this thesis.Saab Dynamics wants to introduce simulation driven design. Since SaabDynamics engineers have little experience of simulation, required a usermethodology with clear guidelines. Due to lack of time, they chose to assign thetask to students, which resulted in this thesis.The aim of the thesis is to develop a methodology in mechanical design, wherethe designer uses the FE analysis early in the design process to develop thestructures' mechanical properties.

Simulation is a vital tool during development of JAS 39 Gripen, since money and time can be saved.The Auxiliary and Emergency Power System, AEPS, is a subsystem of the secondary power system in Gripen. It has the function of providing the aircraft with electrical and hydraulical power before activation and after deactivation of the main engine. The system also functions as backup in case of a safety critical problem in the main power supply system. The system basically consists of a control unit and an auxiliary gearbox. The gearbox is driven by an air turbine.

This essay investigates how teacher sees and uses mainstream movies as a teaching method. The main question approached is: How does teachers use feature films as a teaching method? Which movies are used and how does their working methods surrounding the movies look like? The purpose of the essay is to make the reader reflect over what influence mainstream media has over the historic knowledge of the students and how teachers use that for educational purposes. The business around historical film has grown over the years and is now a million dollar industry. The conclusion is that teachers mostly use feature films to provoke emotional reactions from the students.

The following is an assignment about the use of the word terrorism throughout history. This assignment contains a conceptual historical analysis of the term terrorism. The aim of this assignment is the following: To discern, through a conceptual historical analysis, how the term terrorism has been used and how the meanings of the term terrorism has changed in time.To provide an answer to this thesis is the assignment tries to answer the following questions:1) How can conceptual historical analysis be applied to the term terrorism?2) How can the term terrorism be defined?3) How has the term terrorism been used throughout history, with specific focus on the academic world and even some contemporary texts?4) Is it possible to point out some clear changes in the use of the term from the moment of its first use until current time?5) Which meanings has the term terrorism received and how are these meanings associated with the term terrorism?The assignment initially highlights different theories on conceptual historical research as well as links these theories to the actual term terrorism. After this some difficulties with defining terrorism as a term are pointed out and the impact this has on research within the field of terrorism.

Fluids are important to the Visual Effects Industry but extremely hard to control and simulate because of the complexity of the governing equations. Fluid solvers can be divided into two categories, those of the Eulerian point of reference and those of the Lagrangian. Both categories have different advantages and weaknesses and hybrid methods are popular. This thesis examines Smoothed Particle Hydrodynamics, a Lagrangian method for physically based uid simulations. To allow the artist the exibility given by shorter simulation times and increased number of iterations, the performance of the solver is key.

In this thesis, the Train Power System Simulator (TPSS) has been compared and verified with the commercial simulator TracFeed® Simulation (TracFeed). The basis for the comparison was a given part of the Swedish railway system, with steel transportation trains. Primarily, emphasis was placed on running time and energy consumption in simulation results. Two transformer systems were analyzed, booster and auto transformers. The high voltage transmission line, parallel to the railroad track, was disconnected in some simulations.

This essay investigates how teacher sees and uses mainstream movies as a teaching method. The main question approached is: How does teachers use feature films as a teaching method? Which movies are used and how does their working methods surrounding the movies look like? The purpose of the essay is to make the reader reflect over what influence mainstream media has over the historic knowledge of the students and how teachers use that for educational purposes. The business around historical film has grown over the years and is now a million dollar industry. The conclusion is that teachers mostly use feature films to provoke emotional reactions from the students.