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727 Uppsatser om Extended Kalman filter - Sida 13 av 49

Portning och utökning av processor för ASIC och FPGA

In this master thesis, the possibilities of customizing a low-cost microprocessor with the purpose of replacing an existing microprocessor solution are investigated. A brief survey of suitable processors is carried out wherein a replacement is chosen. The replacement processor is then analyzed and extended with accelerators in order to match set requirements.The result is a port of the processor Lattice Mico32 for the FPGA curcuit Xilinx Virtex-5 which replaces an earlier solution using Xilinx MicroBlaze. To reach the set requirements, accelerators for floating point arithmetics and FIR filtering have been developed. The toolchain for the processor has been modified to support the addition of accelerated floating point arithmetics.A final evaluation of the presented solution shows that it fulfills the set requirements and constitutes a functional replacement for the previous solution..

Nätverk till ett mobilt larmsystem

Embedded Internet Systems Laboratories (EISLAB) har fått i uppdrag av Vendolocus AB att utveckla en prototyp till ett larmsystem som är en del i ett större systemkoncept. Larmet ska vara en box som placeras ut på en strategisk plats för att detektera avvikelser i vibrationer med hjälp av ett digitalt filter. Larmet har ett brett användningsområde för mobila och stationära applikationer. Larmboxen kommer vara ansluten till Internet via en inbyggd mobiltelefon (GPRS). Där finns också en inbyggd GPS-mottagare för att bestämma boxens position.

Koden i ljuset av lagen : DRM, upphovsrätt och det digitala samhället

This is a qualitative case study of young womens? experiences of blogging about One Direction on the social media/microblogging platform Tumblr. The aim of this study was to find out what fan blogging is and why fans blog. We did this by creating an account on Tumblr where we invited young women between the ages of 16?29, who had active fan blogs dedicated to One Direction, to answer an open-ended questionnaire.

Optimering av informationsinsamlingvid prototyptillverkning

This report discusses a method to detect divers in harbour environments usingpassive acoustic detection. The goal was to achieve as high detection as possiblewithout having too high false alarm rate. A short execution time was also desirable.By using the characteristic of an inhalation a band-pass filter was applied to the signalto improve the signal to noise ratio. After the filtering an energy estimation of thesignal was made. This energy estimation was later used in a frequency analysis, whichcould tell us if there were enough energy in the frequencies that correspond to adivers breathing frequency.

Tillblivelsen av "Klassifikationssystem för svenska bibliotek"

The study's aim is to create an understanding for the question why Sweden in 1921chose to create its own classification system for public libraries instead of adapting e.g.the Dewey-system which - at this time - was internationally we11 spread. It examines thesocial changes which proceeded the creation of the Swedish Library Association (SLA)in 1915 and discusses in depth the work of the committee appointed by SLA to createthe classification system. Special interest is also given to the relation between SLACSand the Dewey-system.The study shows that the main influence on the codttee's work was the formerSwedish tradition of classification practice. The Dewey-system was seen as inappropriateto adapt in the Swedish libraries because of the vast changes that wouldhave to be done, and the fact that the decimal notation was practically unused in anylibraries in Sweden.From a methodological point of view, the study tries to apply a critical hermeneuticalapproach as developed by Paul Ricoeur.The study contains an extended English summary..

Validering av Inertial Measurment Units som insamlare av data för drivande av OpenSim-modell

The purpose of this paper is to investigate the possibility of replacing data from highspeed filming (Qualisys motion capture) with data from Inertial Measurement Units (X-io technologies), when used to run a model of torso and pelvis in OpenSim. Qualisys motion capture data is used as the golden standard to validate the result visually and with Bland-Altman plots.In order to obtain comparable data experiments are conducted where both methods of collecting data are used simultaneously. Data from the IMU's then need to be processed in Matlab before it can be used to run the OpenSim modell. Several Matlab programs rotate the IMU data to a static reference frame, filter and integrate it, then create viritual markers that correspond to Qualisys' optical markers.The conclusion is that using IMU as a method for collecting data can replace Qualisys in some applications, but not in ones that require high precision. However, this paper only begins the examination of IMU's and there are most likely improvements to be made..

"They Don't Know About Us" : Fanbloggandets vad, hur och varför på Tumblr

This is a qualitative case study of young womens? experiences of blogging about One Direction on the social media/microblogging platform Tumblr. The aim of this study was to find out what fan blogging is and why fans blog. We did this by creating an account on Tumblr where we invited young women between the ages of 16?29, who had active fan blogs dedicated to One Direction, to answer an open-ended questionnaire.

Radarmodul till cykel för upptäckt av bakomvarande trafik

Detta projekt har syftat till att undersöka möjligheten att implementera en dopplerradar för använding av cyklister i trafik med hjälp av radarkomponent TRX_024_06 från Silicon Radar. Tanken är att radarkomponenten skall vara en del av ett varningssystem som uppmärksammar användaren för bakomvarande trafik.En dopplerradar har implementerats med hjälp av TRX_024_06 tillsammans med en USB-ansluten A/D-omvandlare (NI USB-6216), filter, förstärkare och en bärbar dator med studentversion av LabView installerat.De experiment som har utförts har visat radarkomponentens egenskaper i inomhusmiljö och i trafik, där signalbehandling sker med hjälp av program i LabView. De parametrar som har varit föremål för undersökning är hastighet och riktning hos de fordon som befinner sig bakom cykel.Det har även gjorts försök att ta fram tryckta Yagi-Uda antenner för mottagning och sändning av radiovågor. Dessa har tillverkats på kretskortlaminat och testats i nätverksanalysator och tillsammans med radarkomponenten..

Balanced Scorecard utifrån ett hållbarhetsperspektiv : En studie av statliga företags hållbarhetsrapporter och dess möjlighet till integrering med ett Balanced Scorecard

Today, companies work with issues concerning Corporate Social Responsibility (CSR). A higher demand from customers and other stakeholders as well as an extended legislation are great reasons. Framework and guidelines for sustainability reporting has been developed which includes indices that companies are able to report. Though, for a long term work with sustainability a functional system and internal tool is necessary. Balanced Scorecard, BSC, is a useful tool and efforts have been made to integrate BSC and CSR with purpose to establish the work with sustainability in a more concrete and clear way.

Passive acoustic diver detection

This report discusses a method to detect divers in harbour environments usingpassive acoustic detection. The goal was to achieve as high detection as possiblewithout having too high false alarm rate. A short execution time was also desirable.By using the characteristic of an inhalation a band-pass filter was applied to the signalto improve the signal to noise ratio. After the filtering an energy estimation of thesignal was made. This energy estimation was later used in a frequency analysis, whichcould tell us if there were enough energy in the frequencies that correspond to adivers breathing frequency.

Reformation of the credit rating industry - Is there a need?

The credit rating industry is a complex and fascinating industry. Its history stretches back more than 150 years and has gradually increased in importance. During its history the dynamics of the industry have changed. The extended-principal-agent model was developed by synthesizing different principal-agent-relationships into one model. This model provides a holistic understanding of the credit rating industry and illustrates the interdependence between the different relationships.

Varje litet liv ska vara en vän : om djurens rätt till hänsyn och rättvisa

Öland?s Business Office is on the verge of developing a strategy for the island?s future tourism. Before any work with developing Öland can be carried out, it is essential to gain an understanding of how the place is perceived today.The purpose of this essay is to study the island?s current image and make recommendations for how the place brand could be developed.The methods used are literature studies and qualitative group interviews. The participants have been inhabitants of Öland and returning visitors from the Kalmar region.

Introduktion till icke-standard analys - Ett bevis av transferprincipen och en explicit konstruktion av Brownsk rörelse

I denna rapport konstrueras inledningsvis hyperreella tal från reella tal. Vi definierar aritmetik för skuggor av hyperreella tal och presenterar en icke-standard teori för serier och konvergens utifrån denna konstruktion.Förfarandet generaliseras sedan genom att skapa en icke-standard modell till matematisk analys utifrån en mängdteoretisk modell i ZF, som ett led i konstruktionen presenteras teori för filter och ultraprodukter. Vi visar sedan transferprincipen och bygger upp internalitetsbegreppet för att studera relationer mellan standard ochicke-standard modellerna för att kunna härledda standardresultat från icke-standard resultat. Avslutningsvistillämpas teorin för att skapa en explicit icke-standard konstruktion av Brownsk rörelse och vi ger ett bevis föratt denna konstruktion är ekvivalent med standard formuleringen..

Utveckling och design av WiGID

The Center for Genomics and Bioinformatics (CGB) is an academic department at Karolinska Institute. Generally stated, the CGB department is committed to the generation and management of genetic information by approaches aiming at elucidating the connection between genes, protein and function.WiGID is a genome information database that is available through WAP (Wireless Application Protocol).Our version of WiGID is based on WML, PHP and PostgreSQL as a database server.One of the changes on the old WiGID application was the creation of a relational database with seven tables and one view, instead of the file that represented the database on the old version. We also changed the script language from python to PHP.The search engine ability has been extended with three new search alternatives for a user to choose from. Each choice leads to other, sometimes multiple choices.A GUI has been created for the administrator, to be able to insert information into the database.The structure of the search engine is primarily for narrowing down the search result on the phone display, thereby making the search efficient..

Riskuppfattningar kring spårspring : Fokus på lokförare och personal på Trafikverket

Learning Management Systems (LMSs) hold great potential to support learning activities, for example by providing teachers and students with new and extended spaces for interaction and collaboration. However, this potential appears to be difficult to realize, and despite their perceived learning benefits, the reality is that LMSs are being used primarily for administrative purposes. Meanwhile, external pedagogical tools are successfully put into practice to improve learning outcomes, and the aim of this study is therefore to identify and discuss benefits and disadvantages associated with the LMS as a concept. By interviewing secondary school teachers, we disentangle the idea of integrating administrative and pedagogical aids into a single platform, providing detailed insight into the use of digital tools in secondary education. The study contributes to a deepened understanding of integrated learning environments, and we conclude that there is a conflict between structure and flexibility that needs to be addressed before determining the design of a digital learning space..

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