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999 Uppsatser om Simulation techniques - Sida 20 av 67

Solvärme på Utö

The guest harbor on Utö, Utö Gästhamn, is currently using electricity for heating all of the water used in the showers and taps. Because of the large amount of visitors, especially during the summer months, the hot water usage gets very high and that is also the case for the electrical bills. During the year of 2011 the cost of electricity for Utö Gästhamn reached a total of 257 500 kr. Out of these 257 500 kr approximately 142 000 kr, 55 % of the total cost, were because of the water heating.The report is the result of a cooperation with Skärgårdsstiftelsen, the Green Islands-project and Utö Gästhamn where the mutual goal is to dimension a solar energy system, to promote the sustainable development.Initially the different techniques for the solar energy system are researched. The techniques are plane solar collectors, evacuated tube collectors, pool collectors and photovoltaic cells.

Gulliver Simulation - En systemarkitektur f or n atverkssimulering av

Nowadays, a lot of resources are spent on developing systems that will make it possible forvehicles to act autonomously, and make them more effective. One of the projects that isworking on this is the Gulliver Project. Gulliver has constructed a number of miniaturevehicles equipped with various sensors, to use as a physical testbed for autonomousdriving. One big disadvantage with this method is the long iteration time that occursduring the development and testing of a new software.This project has improved this process by developing a system architecture of a virtualtestbed where it is possible to simulate autonomus vehicles that communicates throughany type of wireless network. The testbed has made it possible to simulate autonomusvehicle systems that with a reasonable margin of error, acts like the system would actin a physical test.

Information som inspiration : en studie av yrkesverksamma konstnärers behov och användning av information

The main purpose of this essay is to investigate professional artists experience of the need and use of information in their creative work. I have collected the material through qualitative interviews with four professional artist working with different materials and techniques. One of the results of the study is that the artists first of all used information as a source of inspiration in their creative work. They gathered their information from various scources, for example; pictures, exhibitions, visual arts, books and novells, depending on what project they are working with. Other important information scources were colleges, especially for the technical information need.

Vana texturerare : En uppsats om minsta motståndets väg, invanda mönster och liknande gränssnitt

This essay brings up how experienced texture artists in game development can get comfortable in their workflow and therefore not spend time on learning new techniques that in the end could be more efficient. We base this on theories that people often choose the path of least resistance, which in the case of an experienced texture artist would be the path they have learned and are comfortable with. We also talk about the popularity of Photoshop and that many of today?s texture artists in the game industry are using it and that this could be because Photoshop was one of the first programs that could be used well for texturing. Because of this many learned to use it and stuck by it and then taught Photoshop to new texture artists because that is the program that they know.

Sammanfogning av videosekvenser från flygburna kameror

The usage of Unmanned Aerial Vehicles (UAV) for several applications has in-creased during the past years. One of the possible applications are aerial imagecapturing for detection and surveillance purposes. In order to make the captur-ing process more efficient, multiple, cameraequipped UAV:s could fly in a for-mation and as a result cover a larger area. To be able to receive several imagesequences and stitch those together, resulting in a panoramavideo, a softwareapplication has been developed and tested for this purpose.All functionality are developed in the language C++ by using the software li-brary OpenCV. All implementations of different techniques and methods hasbeen done as generic as possible to be able to add functionality in the future.Common methods in computervision and object recognition such as SIFT, SURF and RANSAC have been tested..

Link QualityControl (LQC) i GPRS/EGPRS

This master thesis has been done at Enea Epact AB. The purpose of this thesis is to develop and implement a Link Quality Control algorithm for GPRS/EPGRS in the current testing tool. A Link Quality Control (LQC) shall take quality values from mobile stations and base stations and decide a codingsscheme that opimizes the throughput of data. The Advantage with LQC is that it adapts the used coding scheme to the channel quality. If the channel quality is too bad for the used coding scheme, a slower coding scheme with more redundancy should be selected.

Simulering av filtrerade skärmfärger

This report present a working model for simulation of what happens to colors displayed on screens when they are observed through optical filters. The results of the model can be used to visually, on one screen, simulate another screen with an applied optical filter. The model can also produce CIE color difference values for the simulated screen colors. The model is data driven and requires spectral measurements for at least the screen to be simulated and the physical filters that will be used. The model is divided into three separate modules or steps where each of the modules can be easily replaced by alternative implementations or solutions.

Det handlar om träd. Ett utforskande mönsterprojekt för textil

This is a pattern project for textiles, with main purpose to develop and challenge my design process and to experiment with a mix of different printing techniques. The goal of the project was to create three textile individuals as representatives of my experiments, inspired by natural surfaces.The world of fashion have been an inspiration and has been the model for these textiles, with its powerful and playful patterns. With the world of fashion as a model, I also chose to work with the materials habotai silk and silk velvet. The qualities of these materials has also been influential in my design language.The work has been very focused on experiementation and exploration, and resulted in three printed fabrics that I have chosen to call Björkalm, Lindstam and Lavbädd..

Evaluation of creditability and risk minimisation : The effect of accounting for intangibles

The recent history knows numerous examples of creditor?s inability to evaluate financial solvency of the client correctly. Creditors? risks do not only concern individual relations between the two parties but the economy in general. The standard loan-giving procedure considers evaluation based on a number of financial ratios.

Simulering av kötider för en alternativ trucklösning vid Holmens kombinat i Iggesund : Simulation of queueing times for an alternative unloading solution at the integrated milll in Iggesund

Dagens låga lagervolymer vid industrierna har inneburit högre krav på transportstyrningen av ankommande virke för att säkerhetsställa en kontinuerlig råvaruförsörjning. Kombinatet i Iggesund, som är en del av Holmen AB, har sett potential att effektivisera sin vedhantering vid det massabruk samt sågverk som utgör kombinatet. Vedhanteringen är idag tydligt separerad mellan massabruk och såg. Studiens syfte var att kvantifiera effekten av ett samarbete med vedhanteringen mellan massabruk och såg samt en förändring i lossningsresurser med avseende på relativa kötider för virkesfordon som ankommer till kombinatet. Med händelsestyrd simulering skapades en modell över kombinatet.

Modellering av hydrauliskt aktuatorsystem

This report treats a Master Thesis performed at Scania CV AB. The task was to create a computer model of a hydraulic actuator system in the software AVL Hydsim. The system consists of two spring-loaded masses with surrounding hydraulic components. The purpose of the model is to study phenomenon and problems in the system, as well as to be a support in the development of the system. It is not supposed to be used to study absolute values in its current form.

Optimering av multiprocessorsystem med hjälp av schemaläggning

A well known optimization-problem of multiprocessor system is scheduling of tasks. In this paper I use a variant of previous known algoritm, (Fast Critical Path) for scheduling real-time tasks on a multiprocessor system. This is made in a simulation study in MATLAB. The system architecture is assumed to be a MIMD- machine, (Multiple Instruction stream Multiple Data stream) with bus-typologi and message-architecture. Scheduling was made on this system where the number of processors varying from five to ten.

Avloppsvattenbehandling med membranbioreaktor : En jämförande systemanalys avseende exergi, miljöpåverkan samt återföring av närsalter

In the pilot plant at Hammarby Sjöstad, Sjöstadsverket, several new methods are tested in order to achieve a good use of resources. When a new technique is considered it is often the performance of the technique itself, under given conditions, that is evaluated. However, in order to evaluate the overall function the whole picture is needed. With a system analysis it becomes possible to make a comparison where all the positive aspects are put up against the negative ones, for the technique itself as well as its requirements. In this way the influence that minor components have on an entire system can be considered.This report presents a system analysis of an anaerobic membrane reactor (MBR) with a VSEP-membrane (Vibratory Shear Enhanced Process).

Ljusspridningsvariationer i finpapperstillverkning

The purpose of this Master's thesis is to find possible explanations of variation in light scattering in a fine paper. Samples were collected from each second tambour during a time period of two weeks from a paper machine at MoDo Paper, Husum. Two data sets, consisting of 20 and 95 observations, were selected for extensive analysises of tensile and structual properties. The data was evaluated with multivariate data techniques using the programs Simca and Extract. The results of PCA- and PLS- analysises pointed out 3 of 52 variables as important for the variations in light scattering.

Coaching: - att tävla och vinna i livet

In recent years coaching has become an increasingly popular phenomenon outside of the sports world. More and more people have found coaching to be a helpful tool for achieving greater performance and fulfillment in their lives. This thesis is a comparative literature study of three books about coaching where the authors use different theoretical bases to explain and teach coaching. The aim of the thesis is to explain how coaching as a phenomenon is described and compare these descriptions as well as to look at the ideals and norms that are produced and reproduced in the use of coaching. The study compares the three books from six different themes and shows that, in the use of coaching, the ideal of a rational and action oriented individual is constructed and the aim for this individual is some form of success.

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