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1037 Uppsatser om Radio frequency (RF) - Sida 2 av 70

"Ring P1 på syra" : Om Radio 1, den kommersiella pratradion i Sverige

I april 2011 startade MTG den kommersiella pratradiokanalen Radio 1. I och med lanseringen introducerades ett nytt begrepp i det svenska medielandskapet: kommersiell a?siktsradio. Denna uppsats so?ker att besvara hur Radio 1:s utbud och inneha?ll ser ut, vilka som kommer till tals i Radio 1, vilka influenser man kan finna fra?n den amerikanska fo?rlagan samt vilken position Radio 1 har pa? den svenska radiomarknaden.

Design and implementation of a 5GHz radio front-end module

The overall goal of this diploma work is to produce a design of a 5 GHz radio frontend using Agilent Advanced Design System (ADS) and then build a working prototype. Using this prototype to determine if RF circuits at 5 GHz can be successfully produced using distributed components on a laminate substrate. The design process for the radio front-end consists of two stages. In the first stage the distributed components are designed and simulated, and in the second stage all components are merged into a PCB. This PCB is then manufactured and assembled.

?Vi är inga maskiner? : En studie om P4-redaktionernas kommunikation via Facebook

The purpose of this study is to see how five different local radio stations, P4, within the public service organization Sveriges Radio communicate with their listeners through Facebook and how they differ from each other.We have also studied how the radio stations follow Sveriges Radios? policies for socialmedia usage and how the communication through Facebook can benefit thetraditional radio. Our study contains a combination of quantitative content analysis with qualitative interviews. We studied the five stations? Facebook pages from for the quantitative content analysis and interviewed those who were responsible for the social media pages, such as web editors and channel managers.Our conclusions are that the P4-stations communicate through Facebook to create a dialogue with the listeners and to reach two-way communication; the stations published mostly written updates that encouraged interactivity.

Känd från radio: En studie om medial förvirring

Many media buyers annually spend money on advertising which will not be of benefit to their own brand; the fact that consumers confuse from which brand they have heard or seen commercials, comes as news to nobody. The phenomenon of media confusion has however earned much less attention. As a greater part of the total marketing budget is being spent on the media investments, on behalf of the actual advertising production, the more interesting it turns out to maximize the effects of the media expenses. The search for optimization is somewhat practised today by brand managers who are daringly adding a few more media channels to support their TV-campaigns. Buying ad space in TV is nevertheless much more expensive than the radio equivalent.

Förbränningslära för bubblandefluidbädd

Radio Frequency Identification, RFID, is a convenient way to enable contactless identification which does not require any physical nor optical contact. As with any radio-based communication the signal can be intercepted, thus making the technology vulnerable to several kinds of attacks. Interception of communication is not the only threat. Since RFID tags might contain personal information or information that will grant the owner access to secure areas, skimming and spoofing attacks are also major threats against this technology. In this thesis report,  the perspective of an adversary is portrayed in an RFID-enabled environment by presenting where RFID is used and how it could be abused.

Fotboll i radio eller TV?

Den här uppsatsen är en jämförande undersökning av hur kommentatorer för fotboll jobbar i radio respektive television (TV). Kommentator som arbetar med expertkommentator är fokuseringen i detta arbete. Metoden jag använde för att komma fram till ett svar var att jag analyserade landskampen mellan Wales och Sverige för att se skillnader och likheter hur kommentatorerna jobbar i de olika medierna. Från matchen har jag sen valt ut viktiga och intressanta situationer som jag studerat närmare. Jag har även gjort kvalitativa intervjuer med kommentatorerna Paul Zyra (Radiosporten) och Jesper Hussfelt (TV4) som arbetade med den ovannämnda matchen.

Design av stimuligenerator för radarmålsökare

During the development of microwave based sensors such as radar target seekers, input signals are needed to verify the performance of the system. Therefore, a channel board has been developed by previous thesis projects at Saab Bofors Dynamics. It uses a technique called Digital Radio Frequency Memory (DRFM). The purpose of this board is to sample and digitally store radio frequency signals in order to reconstruct them after a certain delay.The aim of this thesis project was to use the channel board named above to construct a portable instrument for generation of stimuli signals. This assignment has been divided into two tasks: firstly, to construct and put together the hardware components and secondly, to implement a graphical user interface for the instrument.

Optimering av ultraljudssändare- och mottagare avseende räckvidd, strålningsvinkel och energiförbrukning

Embedded Systems Lab at Umeå University is currently part of a research project with the purpose to examine the behavior of dairy cows inside a barn. Each cow needs to be tracked with a precision of 50 cm, and since GPS-technique has poor functionality at indoor environments, an indoor positioning system needs to be developed.Embedded Systems Lab has already developed an indoor positioning system using IR-light and radio, but since this system demands extensive infrastructure and is rather expensive, an alternate positioning system using ultrasonic pulses and radio is being examined.In this report the range, beam angle and current consumption of ultrasonic transmitters- and receivers are investigated. Three different driver stages for the transmitter is tested, and two amplifier solutions for the receiver. The report also describes how the length of the transmitted ultrasonic pulse affects the received signal, accessibility of a ?shadowed? signal, and the effect of different sound frequency..

Windbelt

Radio Frequency Identification, RFID, is a convenient way to enable contactless identification which does not require any physical nor optical contact. As with any radio-based communication the signal can be intercepted, thus making the technology vulnerable to several kinds of attacks. Interception of communication is not the only threat. Since RFID tags might contain personal information or information that will grant the owner access to secure areas, skimming and spoofing attacks are also major threats against this technology. In this thesis report,  the perspective of an adversary is portrayed in an RFID-enabled environment by presenting where RFID is used and how it could be abused.

Analys av säkerheten av RFID i inpasseringssystem

Radio Frequency Identification, RFID, is a convenient way to enable contactless identification which does not require any physical nor optical contact. As with any radio-based communication the signal can be intercepted, thus making the technology vulnerable to several kinds of attacks. Interception of communication is not the only threat. Since RFID tags might contain personal information or information that will grant the owner access to secure areas, skimming and spoofing attacks are also major threats against this technology. In this thesis report,  the perspective of an adversary is portrayed in an RFID-enabled environment by presenting where RFID is used and how it could be abused.

Testprogram till hårdvara på en viktindikator

Radio Frequency Identification, RFID, is a convenient way to enable contactless identification which does not require any physical nor optical contact. As with any radio-based communication the signal can be intercepted, thus making the technology vulnerable to several kinds of attacks. Interception of communication is not the only threat. Since RFID tags might contain personal information or information that will grant the owner access to secure areas, skimming and spoofing attacks are also major threats against this technology. In this thesis report,  the perspective of an adversary is portrayed in an RFID-enabled environment by presenting where RFID is used and how it could be abused.

Sveriges Radio - Public Service : Den digitala vägen till nya användare

The purpose of this report was to study how the Swedish radio channel Sveriges Radio (SR) website changed over time. What are the differences between various media websites? How many people listen to normal and web-radio and what are the differences between the various services offered on the SR website?Reports from the BBC, Statistics Sweden, Mediavision and the Swedish National Post and Telecom Agency were compared. Several theoreticians have been studied, including Donald A Norman, Jonas Löwgren, Karen Holtzbratt, Jacob Nielsen and Geoffrey Moore.The method used by the author comprised a systematic mapping of statistics from webTrends, KiaIndex, SiteCensus, TNS Gallup/K2analys and reports from RUAB. The data studied have been collected from telephone interviews, postal surveys, internet panels, and from log files.

Från telegrafi till HF2000 : Arbetet på Tingstäde Radio och Marinens Radio 1957-2010

Syftet med denna uppsats är att undersöka hur personalen upplever att arbetet inom Marinen har utvecklats över tid. Vilka skillnader upplevdes under perioden år 1957-2010? Hur utvecklades verksamheten och arbetsuppgifterna? Vilken kompetens behövdes? Ändrades kompetenskraven under perioden, och i så fall hur? Hur påverkade tekniska framsteg arbetssättet? Dominerade civilt eller militärt betonade uppgifter?.

"Aha, det är bara studentradio" : En kvalitativ studie om medielandskapets underdog och kampen om legitimitet

The Bachelor thesis ?Oh, it?s only student radio? is a qualitative study of the Swedish student radio and its members. The study aims to investigate the professionalisation of the radio hosts through Pierre Bourdieu?s theories of field and habitus as well as theories of profession. In order to do so, it?s also necessary to establish the radiostations? perceived role in today?s media landscape by analysing their ambition in relation to other media organisations.

Vetenskapsjournalistik i radio - Vad får vi veta? : En innehållsanalys av vetenskapsradions nyhetssändningar hösten 2004

AbstractPurpose/Aim: The aim of this essay is to paint a picture of science news reporting in the Swedish Public Service science programme, vetenskaps-radion. Key issues to be adressed are: What areas in science are prioritised? How much of the total broadcast time are devoted to each area? Are there any differences in reporting between weeks? How well does the swedish science radio match common interets? Are the news in the form of short ?soundbites? or are they more lengthy in-depth?Material/Method: Quantitative analysis of radio programmes. The variables used are based on the different major areas in natural sciences.Main results: This study shows that most broadcast time is devoted to news regarding biology and medicine and that the news rather are in the form of short snippets of news than more lengty in-depth stories. This is put in light of how journalistes tend to present news and that the subjects involved has to relate to peoples everyday lives.

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