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1076 Uppsatser om Audio Frequency Track Circuit - Sida 43 av 72
Telekrig mot bandspridningsteknik
I denna uppsats betraktas två olika bandspridningstekniker och vilken påverkan de har på telekrigsförmågan. Uppsatsen svarar på frågan:Vilka möjligheter finns att bedriva signalspaning och störning mot radiokommunikation som använder bandspridningsteknikerna frekvenshopp eller direktsekvens?Inledningsvis beskrivs en modell för telekrig mot radiokommunikation, ?telekrigcykeln?. Därefter beskrivs principer för ett radiosystem samt de två bandspridningsteknikerna frekvenshopp och direktsekvens. Slutligen analyseras bandspridningsteknikernas påverkan med hjälp av telekrigcykeln och resultaten diskuteras.Uppsatsen kommer fram till att båda signalerna går att spana mot, direktsekvens innebär större svårigheter för signalspaningen än frekvenshopp.
En jämförande studie kring några av dagens produkter inom Store and Forward och Live
SVT is Sweden?s largest TV-network and broadcasts more then 22 000 hours of TV each year. SVT is a public service company where the basic idea is to reflect the world from different perspectives and news is very important for providing neutral and versatile information in a variety of areas. An important part of the flow of information is to continuously receive reports from all corners of the world around the clock. This places very high demands on the technology used and it is important that it function and develops to meet current and future growing needs.
När kultur var i rörelse : Kulturbegreppets förändring under sextiotalet, speglad genom tidskriften Ord&Bild
The aim of this thesis is to analyse and problematize the concept of culture and its changes during the 1960s. By examining articles out of the periodical Ord&Bild 1962-1972, I show how an aesthetically marked concept, closely related to the concept of art, changes into an anthropological perspective where attention is drawn to the social, economical, political and ideological aspects. This change is viewed in relation to the works of three prominent cultural theorists from the 1960s: Raymond Williams, Marshall McLuhan and Herbert Marcuse.The change that the concept of culture undergoes can be illuminated in several ways. Epistemologically questions of art, its objectivity and relation to reality, are replaced by questions of the function of art and of its role as reproducing ideas and norms of a bourgeois society. Economical and social aspects are used as critical factors in discussing the role and conception of culture, a perspective that gives the discussion a political and ideological edge.
Våld i film : En evolutionärbiologisk förklaring till vår fascination
Denna uppsatsen undersöker varför våld i film är så utbrett och populärt. Jag använder mig av ett evolutionärbiologiskt perspektiv, som tidigare inte använts vid filmforskning i så stor utsträckning. Istället har filmforskning och andra studier på människans beteende oftast utgått ifrån ett socialkonstruktivistiskt perspektiv. Uppsatsen är av typen ?forskningsöversikt? vilket innebär att jag inte har gjort någon klassisk analys på ett filmiskt verk eller empiriskt material, utan har sammanställt en stor mängd forskning från andra forskare.
Förstudie av gränssnitt och styrprogram till SD-180
En av Glimek AB:s mest förekommande maskiner är SD-180 som används för degavvägning. Den finns i flera olika varianter. Den enklaste har enbart start- och stoppknapp och en potentiometer för att ställa hastigheten och en mer avancerad variant har en operatörspanel där olika möjligheter till inställningar finns.Konstruktionen på denna maskin hade inte uppdaterats på många år och behövde en uppdatering av användargränssnitt, programvara och elkonstruktion. Arbetet har framförallt koncentrerat sig på användargränssnittet till panelen.En del av arbetet var att undersöka om det var möjligt att utesluta PLC ur konstruktionen och använda en mer avancerad programmerbar frekvensomformare. Eftersom det blev problem med lanseringen av programvara till frekvensomformaren och enbart en mindre bra fungerande demoversion fanns tillgänglig så var detta tyvärr inte möjligt.I arbetet har olika varianter på operatörspaneler utretts.
Idrottslärares syn på kamratbedömning inom ämnet idrott och hälsa i grundskolan
AimThe aim of the study is to gain insight into how physical education teachers reflect on peerassessment in Physical Education (PE). The study was limited to investigate teachers? conception of peer assessment. The study also examines whether teachers can describe anymethods of peer assessment that they use or have used in their teaching, and what strategic choices they talk about when they describe their methods.MethodQualitative interviews were used to collect data. The interviews can be referred to as in-depthinterviews with a particular focus on concepts.
Design of automatic measurements systems for characterizing RF-components
Arbetet bygger på att de informationssystem som används idag men som blir allt äldre och därigenom inte klarar de krav som ställs på dem. Detta medför att informationssystemen måste migreras till modernare plattformar, då företagen dels inte klarar sig utan dess nuvarande funktionalitet och dels måste vidareutveckla systemen.Detta arbete tar upp olika sätt som detta kan genomföras på och vilka problem som kan komma att uppstå när detta sker. För att kunna undersöka detta så genomfördes ett antal migrationer. Språken som migrationen kommer att ske mellan är Visual Basic 6 och Visual Basic .net. Migrationerna kommer att ske med hjälp av ett migrationsverktyg, samt ett ramverk som i arbetet skräddarsys för just arbetets typ av migrationer.Det arbetet kommer fram till är att det sker problem vid användande av ett verktyg och även att det inte ger tillräckligt med respons på vad som gått snett under migrationerna..
Identifiering av synkronmaskinsmodell genom SSFR-test
At the Division of Electricity at Uppsala University there is an experimental rig forhydroelectric generators. The experimental rig?s vital part is a 12-pole synchronousmachine, whose electrical characterizing parameters (resistances, inductances andtime constants) are unknown. The aim of this thesis is to characterize the machine inits current state by perform a Standstill Frequency Response (SSFR) test. From theanalysis of the measurement data, which is a part of the test, a set of basic parametershave been received.
Framställningen av Judas Iskariot : En förändringsprocess?
The purpose of this essay is to identify the criticism that has been directed towards the traditional description of Judas Iscariot as a traitor. After a survey and analysis of the critical revisionists' arguments, a discussion follows regarding the possible effects this may have on future ways of describing Judas Iscariot.Based on the results that have been elucidated, this essay concludes that the traditional description of Judas in recent times has been forced to endure fairly strong criticism. To summarize this criticism, the main argument raised by today?s revisionists consists of linguistic and historical phenomena. According to these Judas Iscariot has been subject to a, according to some, deliberate demonization; where he over time has become portrayed as more blameworthy.
Huawei going Sweden : En studie om etableringshinder i Sverige ur ett kinesiskt perspektiv
In the year of 2001, China launched their new international marketing strategy Going Global. As an effect of this, the frequency of Chinese establishments in Sweden has increased heavily in the last ten years. One of the larger Chinese establishments in Sweden happened in 2003, by the telecom company Huawei. This essay illustrates the obstacles that a Chinese company faces when setting up their business on the Swedish market. Previous studies have focused on Swedish establishment abroad.
Blixten & Ida, två elever med synnedsättning möter läs- & skriftspråket
By studying recent literature and following current research we know that language awareness and a rich language is important to all children when learning reading and writing and that decoding and understanding of the words are the fundamental processes in reading. How do pupils with visual impairment learn how to read and write? What strategies do they use in their contacts with reading and writing? What are the advantages do pupils with visual impairment have when learning to read and write? These questions have been the starting points in a study we have done by following two pupils with visual impairment. By meeting and discussing with the children, their parents, teachers, and lowvisiontherapists we have got a deeper knowledge in how these children meet the language in reading and writing. We have also come to an understanding regarding people surrounding the children have to make reading and writing comprehensive, enjoying, and meaningful.The problem for a child with visual impairment is the decoding, to catch letters and pictures of words good enough with the sight.
1-D Modellering av Piezoelektrisk Injektor
A piezoelectric injector was modeled, in this Master Thesis Project which was carried out at Scania CV AB in Södertälje, in GT-Fuel. GT-Fuel is simulation program from Gamma Technology.The simulation model for the piezo injector was divided into a hydro-mechanical system and an electrical system (Piezoelectric element). First the hydro-mechanic model was duplicated from Advance Continuous Simulation Language model (ACSL). The simulation results were then compared to the ACSL, to verify that the hydro-mechanical system was modeled correctly. The simulation results for the electrical model were also compared with a Simulink model.
Rapportera Mera?: En kvalitativ studie av hur svenska finanschefer uppfattar kravet på kvartalsrapportering
The purpose of this paper is to study how Swedish CFOs perceive that the requirement for companies to issue quarterly reports affect business operations in the company. The fact that it is regulations on the Stockholm Stock Exchange, and not the law, that requires companies to issue quarterly reports makes Sweden unique in Europe. The paper is based on interviews with CFOs from 32 companies quoted on the Stockholm Stock Exchange. The major finding in the study is that a majority of the CFOs perceive that the pressure for short term results, created by quarterly reports, affect their work and the investment decisions made in the company. Also CFOs feel that the market over interprets the information given in quarterly reports.
Används både formativ och summativ utvärdering i ett projekt?
In companies today, it is becoming more and more common for employees to work in a project based environment, as a result many companies have developed their own project models. Companies with a well developed product culture are striving to improve their existing models, and businesses relatively new in the marketplace are aiming to reach a high level of maturity as well as reach high levels of efficiency in the shortest time possible. As the number of mature and efficient companies with well developed project model increase, so does the level of competition in the market. Since a well developed project model often leads to a more efficient and accurate way of carrying out the project, which in turn leads to shorter delivery time towards the client. This is crucial as time is one of the most valuable parameters of competition in today?s business environment.
Smartphoneapplikationer ? ett värdeskapande verktyg? : I bank- och livsmedelsbutiksbranschen
The smartphone market is growing rapidly, between Google Play and App Store more than 25 billion apps have been downloaded since 2008. Today many companies develop their own smartphone applications (apps) for their customers. We believe that many apps are developed without much consideration about the actual value it brings to the customer, and through them, value for the company. Instead they create applications with hope of keeping the company modern. Developing and implementing apps in a business is neither easy nor free and must therefore add value to the business in some way.