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2187 Uppsatser om Digital Signal Processing - Sida 32 av 146

Odysseus och de gulliga katterna : En kvalitativ studie av tre dagstidningars digitala kulturjournalistik

Den här studien kommer belysa om kulturjournalistiken i tre svenska dagstidningar har förändrats till följd av deras digitala publicering och i så fall hur. Denna utveckling bör ses i en större kontext med en utmanande ekonomisk situation för dagspressen, färre prenumeranter och därför även vikande annonsintäkter, utöver ökad konkurrens från Internet, sociala medier och webbtidningar. Webbpublicering har gjort det möjligt att ständigt mäta hur läsare tar till sig artiklar, om texter blir klickade och om de blir lästa. Genom kvalitativa intervjuer med tre kulturredaktörer på tre olika dagstidningar kommer denna studie belysa kulturredaktörens publicistiska ställningstaganden. Analysen tar upp en rad frågeställningar som gäller det journalistiska innehållet, språk, typ av textgenres som publiceras, sätt att skriva, förhållningssätt hos kulturredaktören samt olika sätt att arbeta journalistiskt, och undersöker om det var något av detta som framstår som en extra tydlig utveckling i relation till digital publicering.

Utomhuspedagogik? Det är en jävligt bra fråga! : Idrottslärares definitioner och uppfattningar om utomhuspedagogik i ämnet idrott och hälsa.

AbstractIn this text the attitudes towards and using of blogs in teaching Swedish toteenagers will be explored. The results are based on a survey made amongst 17teachers and 58 students from all over Sweden. The end results show that theusage of blog still hasn?t found a permanent way into the classrooms, but has anappeal to and is being used by predominantly younger teachers both, male andfemale, with a positive response from students regardless of gender. Theconclusion is that using web tools like the blog is an easy first step for schools toconnect to the digital society of the 21stcentury and take advantage of the perksavailable in the digital classroom.Svensk titel:Blogg + Svenska =Sant? ? Bloggande i undervisningen i svenska.Engelsk titel:Blog + Swedish =True? ? Blogging in teaching Swedish.Ämnesord: Blog, Web 2.0, digitalt klassrum, svenska, undervisning,kompetensutveckling.

Digital mobbning - Att vara barn i det nya mediasamhället

Denna studies syfte är att försöka förstå och diskutera den digitala mobbningen utifrån det mediasamhälle vi befinner oss i. Frågeställningarna som är grunden för studien är: Hur kan vi förstå digital mobbning? Hur kan denna förståelse leda vidare till metoder för att angripa problemet? Hur upplever pedagoger respektive elever den digitala mobbningen? Vad säger lagen om mobbning? Vad kan vara viktigt att tänka på i samband med Internet? Studien bygger på kvalitativa och kvantitativa undersökningar gjorda på två olika skolor. Den kvantitativa undersökningen bestod av enkäter som delades ut i tre klasser i år sex. Den kvalitativa undersökningen bygger på intervjuer med två pedagoger knutna till dessa klasser.

Social samvaro i sociala medier : En studie om digitalt utanförskap hos äldre

This study focuses on trying to understand the attitudes of people born in the 1940?s concerning their view on social media. This 1940?s group has been growing on the social networks such as Facebook, but their usage is not active. Therefore, the purpose of this report is to understand in what way they are affected by the using of these platforms.

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.

Mätning av partikelmassa i avgaser från en dieselmotor

This master thesis was a continuation of a previous study in the diesel exhaust characterization, which is part of the academical work embedded in the EMIR-1 project. The main objective of this thesis work was to finish the installation and make the proper modifications of the particulate mass measuring system located in one of the engine test cells at KTH, in order to be able to measure the mass of the particles from the exhaust of diesel engines.This experiment requires a diluted flow sample from the exhaust that should be sent to the device that makes possible the measurement of particle mass, called TEOM. In the first stage of this project, the objective was to study and make the proper modifications in the existing KTH diluter because there were several problems to obtain a constant dilution ratio from it during tests.This modifications were made and it resulted in a great improvement in the maximum inlet and outlet flow that this diluter can handle. Therefore another modification is proposed for controlling the inlet exhaust flow so it will be possible to regulate the dilution ratio and make it constant along a wide range of engine loads and speeds.The second and most important stage was to make particulate mass measurements possible by analyzing the frequency signal from the TEOM device. The idea was to obtain the frequency of oscillation from the tapered element in the TEOM, and therefore with the proper correlations, be able to predict the particulate mass concentration in the exhaust flow from the engine.An electrical problem in the TEOM circuit was detected and corrected, so the signal that carries the frequency from the TEOM can be analyzed properly.

Miljövärdeflödesanalys av Risifruttiproduktionen : En utvärdering av värdeflödesanalys och miljövärdeflödesanalys

This report is the result of a thesis work carried out on the Risifrutti production at the company Procordia Food AB. The thesis is at a master level and is the final work for the author to receive a Master of Science in Innovative production at Mälardalen University. The thesis comprises 30 credits and has lasted for 18 weeks. The thesis is mainly a research on whether it is possible to perform an Environmental Value Stream Map (E-VSM) in a food processing industry and an evaluation if the tools E-VSM and Green Performance Map (GPM) are useful in this type of industry. An extra part to this research is to use the results from the E-VSM and give Procordia Food AB information on improvement potentials in the Risifrutti production. The author has found it difficult to collect some of the quantitative data to the E-VSM, mainly regarding energy, but by using the Value Stream Mapping (VSM) tool and other Lean tools the author was able to identify and quantify several wastes in the Risifrutti production. Recommendations for improvements based on these wastes have been given to the company. In the research part of this report the utility of the Value Stream Map, Environmental Value Stream Map and Green Performance Map in a food processing industry have been analyzed. The author has found that the Value Stream Map has been a useful tool since waste and unevenness in the tact of the production has been identified. The Environmental Value Stream Map and the Green Performance Map are also great tools when a company wants to analyze their environmental impact and then invest in environmental improvements. However, no profound energy analyzes has been done in the Risifrutti production because of the lack of energy meters for steam, electricity and compressed air in the production lines..

E-arkivering hos stadsarkiv : Mellanarkivslösning i sitt sammanhang

Digital preservation is a relatively new subject to Swedish archives. Alhough computers have been used for a long time, preservation has been made on paper and stored on shelves. These days a lot of cities in Sweden have investigated how to best secure the digital information for the future through electronic archiving, e-archives. One option is to hand in the information as soon as possible, but to let the producer keep the information ownership yet some time. The idea is to let the producers of the information answer questions and hand out material, since they are more competent on their field.

"Antingen så lägger man sig ner och dör eller så försöker man" : En intervjustudie om några förläggares och bibliotekariers inställning till e-bokshantering på svenska folkbibliotek

This master thesis aims to examine how public libraries in Sweden are practically and ideologically equipped to deal with e-books, outside of the dominant distributor Elib. The study also aims to find out what?s required of the book market and the public libraries to make further progress in the question of e-books. In Sweden e-books are still representing only a small amount of all the library loans and an even smaller amount of the commercial book market.The methodological and theoretical ground for the thesis is Grounded Theory, and the survey is based on interviews with publishers, librarians and distributors.The conclusions of this thesis are that the public libraries lack resources to invest in e-books, and that they also lack in knowledge about the media and its readers. It also exposes that both internal and external collaboration efforts need to be further developed.

Full duplex Konferenstelefon

Denna rapport analyserar ekosläckning för en full duplex högtalartelefon. Systemet bygger på en LMS-algoritm som har implementerats på en TMS320C3 1 signalprocessor. Arbetet har gått ut på att undertrycka ekon genom utnyttja så mycket som möjligt av processoms kapacitet. Möjligheterna för att två eller fler personer skall kunna tala med varandra på att ledigt sätt genom en högtalartelefon påverkas mycket av de ekon som finns i systemet. Högtalartelefonens mikrofon fångar upp ljudet ifrån sin egen högtalare och skickar detta ljud tillbaka genom telefonnätet. Utan någon form av ekokontroll uppstår ett irriterande eko av sin egen röst i telefonen. Ju längre fardröjning som telefonnätet tillför, ju mer irriterande blir ekot. Konventionella högtalartelefoner använder röstaktivering av mikrofonen för att bli av med ekot.

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..

Den virtuella mötesplatsen : Om de ungas användning av datorer och Internet i vardagen

The purpose of this study was to illustrate how children of the "digital generation" used their computers in their everyday practice. The important in the study was children's perspective on computers interactions and communications in a digital arena.An essential item about understanding children's way to think about computers was to let children themselves speak by taking part in the study, because children's voices are seldom heard in public. The empirical material used was interviews with sex children between 13 and 15 years old. My method was qualitative.The main results showed that social relations are very important for children. The Internet gives children access to an arena where they are able to make new contacts with others as well as transcend their biological as their physical identity.An important accepts for the children in the study was the option to be anonymous.

Business Potential of Software Defined Radio Technology

The business potential of software defined radio (SDR) technology is studied by evaluating whether or not its characteristics correspond to those particular to a disruptive technology. The maturity of the SDR technology concept is illuminated by analyzing the opinions and perspectives of a selection of representatives for different stakeholders in the wireless communications market. Characteristics as, for example, the degree of consensus about the utility of SDR technology and the awareness of features and limitations are studied by application of the theory of technological frames. This theory helps us understand how and when technology evolution takes place. Finally we describe the value network structures of some potentially viable application areas for SDR and suggest some possible business opportunities based on SDR technology.This thesis is carried out as a case study and the research data is obtained from secondary sources, such as literature and Internet publications as well as interviews with people well experienced in the field of wireless communications.

Digital 3d landskapsmodellering : detaljeringsgradens betydelse för läsbarheten hos digitala tredimensionella landskapsmodeller

In this paper I have sought a suitable level of abstraction in my models describing the landscape; the models are made to be viewed from eyelevel. Because of the spectator being ?in the model? the objects included need a certain degree of realism. I have sought what is needed in the model to be able to comprehend that the model is showing a landscape. Some details might be unnecessary.

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.

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