The aim of this paper is to study the different parts of a wireless system in order to better understand the signal properties and what key factors changes the signal during its transmission. Two transmitters were created, an FM transmitter that transmits analog data and an Arudino board programed to convert data to bits before its transmission. The acquired signals were then compared to the original signal noting how differently the data had changed. To understand the antennas contribution to the system a simulation was done using High Frequency Structural Simulator. A description of the analysis on the different acquired signals was done to determine the best applications they might have.

The trioxacarcins are structurally complex, highly oxygenated bacterial isolates that potently inhibit the growth of human cancer cells in culture as a consequence of their ability to alkylate guanosine residues of duplex DNA. This dissertation presents a component-based synthetic route to the trioxacarcin structural class, broadly defined, which resulted in fully synthetic routes to trioxacarcin A (1), DC-45-A1 (10), and a diverse collection of analogs. / Chemistry and Chemical Biology

Generators, or expressions capable of producing a sequence of results during evaluation, are found in one form or another in a number of programming languages. The use of generators has been limited by a lack of understanding of their operation. Control structures for generating expressions are usually patterned after the control structures found in conventional language designs. A notation for describing the static aspects of generators is presented in this dissertation. This notation is used to describe the operation of the generator-based control structures in Icon and to introduce several novel control structures based upon generator evaluation. Co-expressions are introduced as the expression-level equivalent of coroutines, and combined with generators to provide a powerful programming facility. Finally, machine and language independent models for implementation of goal-directed evaluation and co-expressions are presented.

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The EQ-VAS, a measure of self-reported health status, has been operationalized in ways that depart from the original format. The primary purpose of the study was to examine the equivalence of the original paper-based vertical format with a touch screenbased horizontal format. Non-probability sampling was used to recruit 314 subjects intended to reflect the primary socio-demographic characteristics of the general adult population. A two-part questionnaire completed roughly 10 minutes apart was administered in a randomized crossover design. One part was the original paper-based 20cm vertical EQ-VAS; the other part was touch screen computer-based (designed by Assist Technologies) and included, among other items/scales, a horizontal EQ-VAS, the SF-36, and socio-demographic items. A mean difference of ± eight points between the two versions was specified as the minimally important difference (MID). Almost a third (30.1%) of the respondents reported identical scores on both formats and 80.1% of the respondents had difference scores within ± 8 points. The 95% confidence intervals for both samples indicated that the difference in scores was relatively small and below our equivalence threshold. In addition, data collected via touch screen may be more reliable since 22% of subjects did not complete the EQ-VAS paper format as instructed. These results provided evidence for the measurement equivalence of the touch screen EQ-VAS with the original paper format. A secondary purpose was to examine the psychometric properties of an electronic version of the SF-36. Floor and ceiling effects were comparable to that observed in other studies using the paper SF-36 in the general population. All reliability coefficients exceeded 0.70; the range was from 0.75 to 0.93. There was support for the construct validity of the touch screen SF-36, as the direction and strength of the correlations between the SF-36 scales and the EQ-5D domains were as hypothesized. Overall, there was a high level of correspondence between the touch screen SF-36 scores and previously reported paper based SF-36 scores in the general population. The comparable psychometric properties and low level of missing data make touch screen questionnaires a very viable alternative to their paper-based formats.

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. The statistics have then been compared and in some cases tables have been cross-correlated. The results from the various studies showed that SR is following the rising trend displayed by a few of the media websites reviewed. It is of particular interest to note that web-radio listening between the final period 2004 and 2005 almost doubled. The next stage will be to offer the listener/user a more central position. By listening to users, and above all non-users, the function and content can be adapted to the larger group of pragmatists and conservative listeners that are looking for sustainable and convenient solutions. Key words [Streaming, on demand, radio, analogue, web-radio] / Avsikten med den här rapporten var att ta reda på hur Sveriges Radios (SR) sajt förändras över tid. Vilka skillnader finns det mellan olika mediesajter. Hur många lyssnar på vanlig- kontra webbradio samt vad finns det för skillnader mellan olika tjänster på SR:s sajt. Jämförelser har gjorts mellan BBC, SCB, Mediavision samt Post & Telestyrelsens rapporter. Flera teoretiker har studerats som Donald A Norman, Jonas Löwgren, Karen Holtzbratt, Jacob Nielsen och Geoffrey Moore. Författarens metod bestod av att systematiskt kartlägga statistik från webTrends, KiaIndex, SiteCensus, TNS Gallup/K2analys samt RUAB:s rapporter. De data som undersökts kommer från telefonintervjuer, postenkäter, Internetpaneler samt loggfiler. Statistiken har jämförts med varandra samt i vissa fall har tabellerna korskörts. Resultaten från de olika undersökningarna visar att SR följer den uppåtgående trend som några av de undersökta mediesajterna har. Men det mer intressanta är att webbradiolyssningen mellan sista perioden 2004 och 2005 nästan fördubblats. Nästa steg blir att se till att lyssnarna/användarna står mer i centrum. Genom att lyssna på användare, men framför allt icke-användare så skulle funktion och innehåll kunna anpassas till den större gruppen pragmatiker och konservativa som vill ha hållbara och bekväma lösningar.