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2187 Uppsatser om Digital Signal Processing - Sida 5 av 146
Databashanterare i Visual C++ för flygradiostationer
Examensarbetet som är utfört för SAS Flight Academy innebär att modernisera
hanteringen av flygradiostationer
för en flygsimulator från 1968. Detta görs med hjälp en PC som kopplas till det
nuvarande datorsystemet med ett
parallellkort. I PC:n finns en Microsoft Access databas där all data lagras om
världens alla flygradiostationer.
Informationen om flygradiostationerna finns lagrade på en CD-ROM som
uppdateras ett antal gånger per år.
Klienten till databasen är programmerad i Visual C++ och använder Microsofts
programbibliotek MFC för hantering
av databasen. Klienten har två uppgifter dels sköta hanteringen och dels
uppdateringar av databasen.
NATURMINNENS F?RVALTNING OCH SKYDD: Inventering i V?stra G?taland
Natural monuments are natural objects with special protection due to their high natural value or cultural significance. The natural value is determined by the occurrence of signal species found on and near the natural monument. The law surrounding natural monuments has evolved a lot since the first ones were declared, and today the title natural monument can be replaced with the title tree with high conservation value. The title has come later and can sometimes overlap natural monument. Some natural monuments lack the qualities required to be classified as a natural monument or a tree with high conservation value, but have a cultural importance.
Ultraljudsmätare för bubbelfälla
This bachelor thesis is about an ultrasonic sensor, implemented in a bubble chamber in Artis. The sensor consists of the piezoelectric sensor and an electronic control circuit. The control circuit consists of a programmable microprocessor, PIC18F2420 and a circuit, which sends the excitation signal to the piezoelectric sensor, and later receives the echo. This bachelor thesis consists also of a theoretical study, which examines different techniques of liquid level sensing in a chamber. The study discusses which factors are important in liquid level sensing and examine accepted methods.
Barns sociala samspel vid användning av digitalteknik i förskolan
The use of digital technology in preschool has been a question aboutif it will be used. By the new curriculum for preschool, it now is a question about how it will be used. My experience shows that many pedagogues are still afraid that the children will miss the interaction whit other children when they are using digital technology.The aim of the study is to see if it is social for the children to use digital technology in preschool.This study is made by inquiry, qualitative interviews and observations.My result shows that children are social active with each other while using digital technology. Turn taking and time determines who will play and what the conditions are. The thesis concludes that children perform social interaction when using digital technology.
Konstruktion av förstärkare och insamplingssteg till en PSAADC i 0.25 um CMOS
The aim and goal of this work has been to design and implement a voltage reference network for a 12-bit PSAADC, Parallell Successive Analog to Digital Converter. A chip containing the design has been sent away for fabrication. Because of the long processing time, no measurement data are presented. The main specifications for the voltage reference generator is to generate stable reference voltages with low noise and a good PSRR. Efforts has also been made to minimize the power consumption..
Digital kompetensportfolio för designkompetens : - Hur kan en digital kompetensportfolio sto?dja utveckling och synliggo?rande av designkompetens
Digitala kompetensportföljer ökar i popularitet och deras användningsområde har under de senaste åren ökat. En digital kompetensportfölj kan demonstrera en individs framsteg, prestationer och hjälpa till att visa upp hur väl en student behärskar den kompetensen som krävs inom ett visst yrkesområde. Forskning pekar på att designkompetens och designförmåga är någonting som är svårt att fånga samt förmedla då en stor del av en designers designprocess genomförs inne i huvudet på designern. Jag har genom en kvalitativ studie, intervjuat olika roller gällande deras tankar om hur designkompetens kan utvecklas och synliggöras. Studien resulterade i riktlinjer hur en digital kompetensportfolio kan stödja utveckling och synliggörande av designkompetens..
Implementation av CUSUM/SPRT-algoritm för kvalitetsövervakning i realtid av robotsvetsning
Under början av 1990-talet inledde Volvo Personvagnar i Olofström en process
där övervakning av robotiserad MIG/MAG-svetsning var i fokus. Det ledde fram
till ett forskningsprojekt som resulterade i att Stefan Adolfsson, Lunds
tekniska högskola/Blekinge tekniska högskola, 1998 presenterade avhandlingen
Automatic Quality Monitoring in GMA Welding using Signal Processing Methods
[5]. I den presenterades ett SPRT-baserat övervakningskoncept för övervakning
av MIG/MAG-svetsning med kort- och spraybåge.
För att få fram ett kostnadseffektivt övervakningssystem uppkom tanken att
använda vanliga PC-datorer som plattform. De erbjuder hög beräkningskapacitet
till förhållandevis låg kostnad. Examensarbetets mål är att implementera det
SPRT-baserade övervakningskonceptet i LabVIEW på en PC och utvärdera
realtidsegenskaperna.
ZigBee-teknikens möjligheter att trådlöst överföra EKG-signaler
In many clinical applications, it is desirable to transmit sensor information wireless. In earlier research, investigation transmit ECG signal using Bluetooth, was performed. However, when Bluetooth has some drawbacks it is of interest to investigate alternative methods, one such method is ZigBee. Bluetooth has higher data rate speed (1Mbps) than ZigBee (250kbps). However, Bluetooth consumes more power.
Interaktiva, digitala lärresurser : Med underhållning kommer motivation
Earlier research has shown that combining education with entertainment can improve students motivation in school. With this study we aim to learn more about interactive digital learning resources and how they should be designed to entertain and thereby contribute to motivation. We have identified aspects of educational games that also could be considered when developing interactive digital learning resources, to make them more entertaining and motivating. We have chosen to study and evaluate an interactive digital learning resource called ?Grasp the Disaster?, a fictional online adventure created for students in the ages between 13-15.
Filmproduktionsprocesser : En jämförande studie om att filma analogt kontra digitalt
The art of producing films have been around for more than a century and the technology just continues to evolve. But although much has happened in 100 years, there are also processes, theories and practices that look the same now as then. I write this thesis because I want to find the differences between the analogue and the digital way of production. This study is based on a qualitative approach because my ambition is to seek the views concerning film production processes. The advantages of analogue film is that it contains more information than the digital formats and that it has a more cinematic style.
Att upptäcka det oväntade : En studie av begreppet serendipitet och dess förekomst på det digitala folkbiblioteket
The purpose of this study is to examine if digital public libraries are serendipitous environments. Serendipity in this instance is defined as finding something unexpected and valuable, while searching for something else.A survey was conducted at two Swedish digital public libraries, where the patrons were asked to fill in a questionnaire online. The questions were based on the work on serendipitous digital environments by Lori McCay-Peet, as well as considerations of human factors that could possibly influence serendipity.The result indicate that a majority of patrons experience serendipity at the digital library, although it?s still more common to do so at the physical library or on other web sites. The result also confirms the importance of taking human factors into account when studying serendipity.
En studie i realtidsgenererat binauralt ljud
Många av dagens dator och TV-spelsljud är anpassade för högtalaruppspelning, i
många fall även
flerkanalssystem som 5.1 surround och liknande. Få spel är anpassade för
uppspelning genom
hörlurar och för att få en bra ljudlokalisering i hörlurar behövs ofta någon
form av
surroundhörlurar. Vi tror att man kan skapa trovärdig (Riktnings)återgivning av
ljud i hörlurar
genom bara två ljudkanaler genom så kallat binauralt ljud. Vi kommer i detta
arbete att beskriva
de faktorer som spelar roll i vår stereohörsel, varför de fungerar samt vilka
svagheter som finns i
detta system. Vi kommer att skapa ett system för att behandla realtidsgenererat
binauralt ljud för
spel och beskriva de verktyg vi valt och den generella arbetsprocessen.
Vi gör det för barnets bästa : En intervjustudie om samverkan mellan förskola och socialtjänst
The purpose of this study is to examine if digital public libraries are serendipitous environments. Serendipity in this instance is defined as finding something unexpected and valuable, while searching for something else.A survey was conducted at two Swedish digital public libraries, where the patrons were asked to fill in a questionnaire online. The questions were based on the work on serendipitous digital environments by Lori McCay-Peet, as well as considerations of human factors that could possibly influence serendipity.The result indicate that a majority of patrons experience serendipity at the digital library, although it?s still more common to do so at the physical library or on other web sites. The result also confirms the importance of taking human factors into account when studying serendipity.
Analys av fyra svenska företags kundtidningar : Kundrelation och varumärke byggs när redaktionellt material anpassas för både tryck och webb
This paper aims to clarify how four customer magazines and digital versions of the magazines are being used by their target group. It focuses on the Ikea customer magazine specifically. After the analysis the conclusion is that out of the four companies customer magazines only one, Ikeas Live magazine, fully re-used the editorial content from the printed magazines on their digital platform. The interviewees were six readers of Ikeas customer magazine Live and two experts from a Stockholm based content firm. After the conducted interviews it became clear that none of the interviewees read the digital version of Ikeas magazine Live.
Online?: En kvalitativ studie av digitala affärsrelationer
Internet and digital technology has changed the way we live our lives. As individuals we've found new ways to communicate, educate and experience. But what's the effect on B2B marketing? Previous research presents transactional benefits such as lower costs and easier access to information, but there is limited research done on more complex and long term relationships as well as on modern digital tools. The purpose of this thesis is to investigate whether a deeper long term B2B relationship can be created and nurtured using digital tools for communication, and if so, how these tools and processes can be described and understood.