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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
411

Välkommen till Rapport, men först, det här är Dagens Eko : En kvantitativ innehållsanalys om vilka nyhetsgenrer som får plats i SVT:s Rapport kontra SR:s Ekot. / Welcome to Rapport, but first, this is Dagens Eko : A quantitative content analysis of which news genres are presented in SVT:s Rapport versus SR:s Ekot.

Karlsson, Simon January 2022 (has links)
The aim of the study is to see what topics the news programmes Rapport on Swedish Television and Ekot on Swedish Radio report on in their broadcasts and to see how different news genres take their place in the programmes. Rapport and Ekot are two of Sweden's biggest news programmes and I want to analyse what is similar in their broadcasts and what is different. The study has been conducted on seven different broadcasts from each medium, which means that the sample amounts to 14 broadcasts from Rapport at 18.00 on SVT (SVT1) and Ekot at 16.45 on SR (P1 and P4). The broadcasts are taken from a period of seven months. I have investigated which news genres is featured in each broadcast and, in particular, studied which news genres are generally the three most common. Furthermore, I have studied how much space news stories, telegrams and commentaries get in comparison to each other. I have also studied how much time covid-19 and the weather get in the news broadcasts compared to other news. The results showed that both SVT and SR spend a lot of time on news stories. Furthermore, the study showed that Rapport reports more on the pandemic, while Ekot focuses more on foreign news. The study also showed that crime news is often top news along with news about politics. News about the weather forecast is more featured on TV than on radio, according to my study on my analysis units.
412

An examination of the use of television in political campaigns

Ford, James William 01 January 1971 (has links)
The objective of this thesis is to make a comparative study of President Nixon’s use of television during his two presidential campaigns. Specific emphasis will be placed on Nixon’s use of television in both of the political campaigns. The final objective of this thesis is to record for future researchers one presidential candidate’s use of television, in two political campaigns for the presidency. One of the campaigns he lost by a narrow margin of the vote, and the second one he won by a small percentage of the popular vote. The accomplishment of the objectives will answer the questions; How was television used in President Nixon’s two presidential campaigns? How did it vary in the two presidential campaigns of 1960 and 1968? This thesis is not intended to deal with some of the other questions that might be asked about the two campaigns, such as how did Nixon’s relationship vary with the press, or how did he use the modes of proof in his television speeches.
413

Retained Woody Structure In 1-Year-Old Loblolly Pine Plantations In Mississippi, Louisiana, And Arkansas

Neu, Justin 09 December 2011 (has links)
I evaluated effects of 4 common site preparation techniques on residual structure while comparing 2 techniques commonly used to estimate CWD volume in Southeast loblolly pine (Pinus taeda) commercial pine plantations in 2 ecoprovinces. The strip plot method (SPM) estimated greater volume than the line intercept method (LIM; 9.7 m3/ha and 11.4 m3/ha respectively). The SPM had lesser volume estimate variability and appears more appropriate for the Southeast. Mechanical sites had the greatest densities of green trees and fewest snag retention and overall were least decayed. Chemical preparation combinations had lesser green tree densities but greater snag densities. Piled CWD volumes were greatest in mechanical treatments and least in chemical plus burn treatments. The Outer Coastal Plain Mixed Forest Ecoprovince had 20% less volume than the Southeastern Mixed Forest Ecoprovince. Chemical plus burn site preparations had the least densities of remnant trees, snags, piled and individual CWD pieces.
414

“I’m Going to Use My Voice”: The Underrepresentation of Women in Digital Content Production

Olson, Christine 01 January 2014 (has links) (PDF)
Digital content production on user generated Internet media sites has opened up new channels for creators to publish and exhibit their work. This exploratory study uses content analysis, survey, and interview responses from the “I Love Ladies” survey circulating on YouTube, an initiative to encourage dialogue about women and digital content production, in order to identify the cultural and structural aspects of the medium which shape women’s participation and recognition. This community-driven initiative is used as an entry point into the user experiences, site structure, and socio-cultural context of YouTube to better understand how inclusion and exclusion function in discourse communities on commercial, user-generated Internet media sites. By tracking disparities between what is discussed and what is not referenced by participants of this initiative, I developed a series of possible interventions to foster more equal and meaningful participation in Internet content production. The study is therefore designed to forward the feminist agenda toward social justice and greater equality with regard to distribution, recognition, and representation for women (Fraser, 2010). This study contributes empirical evidence and actual user perspectives to work towards a more nuanced understanding of how commercial, user-generated Internet media content can enable and constrain civic engagement for historically underrepresented groups.
415

Vilification in Fox's "24"

Drew, Shara M. 01 January 2010 (has links) (PDF)
This paper explores vilification in the popular counterterrorism show, Fox’s "24." A critical, in-depth analysis of three prominent antagonists from the show illustrates the different ways in which they are vilified. Each of the three characters is examined to understand which type of villain he or she embodies in "24," which of the show’s moral codes the villain affronts, and how he or she is punished or treated as a result. The analysis considers the broadcast of the show’s first six seasons in relation to neoconservative and Christian Right values that characterized the George W. Bush administration after 9/11. It finds that the show’s characterizations of all three villains—an Islamic extremist, a femme fatale, and a shirking bureaucrat—reinforce dominant xenophobic, patriarchal, and hypermasculine values, which underscored the Bush administration’s war on terror.
416

Bullying on Teen Television: Patterns across Portrayals and Fan Forum Posts

Walsh, Kimberly R. 01 January 2012 (has links) (PDF)
The primary goal of this thesis was to provide a snapshot of the portrayal of bullying on teen television. Drawing from contextual factors studied in the National Television Violence Study (Smith et al., 1998), a content analysis of 82 episodes (representing 10 series) and 355 acts of bullying was conducted to examine portrayals of physical, verbal, indirect, and cyber bullying in terms of bully and victim social status, motivations, humor, punishments/rewards, character support for bullies, harm shown to victims, interventions by third parties, and anti-bullying episode themes. The analysis revealed significant differences across bullying types for all variables except third party intervention, with portrayals of physical and verbal bullying identified as most “high-risk” (i.e. depicting bullying in ways that research suggests increase the likelihood of negative effects), and portrayals of cyber bullying identified as least “high-risk” for the majority of contextual elements. More generally, the analysis demonstrated that a substantial amount of bullying on teen television sends some concerning messages to young viewers, including the notion that bullying can be funny, harmless, and go without punishment. Complementing the content analysis, an exploratory textual analysis of 294 online fan posts related to bullying portrayed on Glee was performed to capture a representation of potential audience interpretations and intertexts (consumed alongside the television text). The analysis pointed to four major themes across posts: categories of bullying, messages about bullying promoted by characters, contextual elements of bullying, and feelings about characters involved in bullying. In terms of audience responses, the themes highlighted how some fans think critically about bullying portrayals and their implications, distinguish between different types of bullying, and identify with characters. In terms of intertexts, the trends suggested that fans might be exposed to a variety of messages that both criticize and support high-risk depictions of bullying, and defend and rebuke bullying behavior (depending on the characters involved). Combined, the content analysis and textual analysis underlined the importance of media bullying as a topic of scholarly inquiry, revealing that teen bullying is a unique and complex media phenomenon that audiences respond to and interpret in a multitude of ways.
417

ARTIFICIAL INTELLIGENCE-BASED SOLUTIONS FOR THE DETECTION AND MITIGATION OF JAMMING AND MESSAGE INJECTION CYBERATTACKS AGAINST UNMANNED AERIAL VEHICLES

Joshua Allen Price (15379817) 01 May 2023 (has links)
<p>This thesis explores the usage of machine learning (ML) algorithms and software-defined radio (SDR) hardware for the detection of signal jamming and message injection cyberattacks against unmanned aerial vehicle (UAV) wireless communications. In the first work presented in this thesis, a real-time ML solution for classifying four types of jamming attacks is proposed for implementation with a UAV using an onboard Raspberry Pi computer and HackRF One SDR. Also presented in this thesis is a multioutput multiclass convolutional neural network (CNN) model implemented for the purpose of identifying the direction in which a jamming sample is received from, in addition to detecting and classifying the jamming type. Such jamming types studied herein are barrage, single-tone, successive-pulse, and protocol-aware jamming. The findings of this chapter forms the basis of a reinforcement learning (RL) approach for UAV flightpath modification as the next stage of this research. The final work included in this thesis presents a ML solution for the binary classification of three different message injection attacks against ADS-B communication systems, namely path modification, velocity drift and ghost aircraft injection attacks. The collective results of these individual works demonstrate the viability of artificial-intelligence (AI) based solutions for cybersecurity applications with respect to UAV communications.</p>
418

MIMO Communication Capacity: Antenna Coupling and Precoding for Incoherent Detection

Bikhazi, Nicolas W. 17 November 2006 (has links) (PDF)
While the capacity of multiple-input multiple-output (MIMO) systems has been explored in considerable detail, virtually all literature on this topic ignores electromagnetic considerations. This dissertation explores electromagnetic effects on the capacity performance of these multi-antenna architectures. Specifically, it examines the impact of superdirectivity for compact antenna arrays, the effect of antenna mutual coupling, and MIMO performance of multi-mode optical fiber with non-linear detection. Superdirectivity can lead to abnormally large capacity bounds in a MIMO communication system, especially when the antennas are placed close together. Because superdirective behavior is difficult to achieve in practice, this work formulates an approach for limiting the impact of superdirectivity by introducing finite ohmic loss into the capacity expressions. Results show that even a small amount of ohmic loss significantly affects the achievable system capacity and suppresses superdirective solutions. This formulation allows a more detailed examination of the capacity of MIMO systems for compact arrays. For channels which do not vary in time, placing antennas closer together generally reduces the system capacity. However, recent work has demonstrated that for a MIMO system operating in a fast fading environment where the transmitter and receiver know the channel covariance information, the capacity increases as antennas are placed near each other due to an increase in spatial correlation. Analysis of this behavior illustrates that when these capacity gains (due to closely spaced antennas) are observed the radiated power is also increased. Constraining the radiated power leads to superdirective solutions in which the ohmic loss constraint developed must be used to properly determine the capacity behavior of this system. Application of this constraint then leads to an optimum antenna spacing in contrast to the findings of previous research which indicate that antennas should be as close together as possible. Additionally, this section provides an analysis regarding the number of spatial modes that can be used for various system configurations. Recent research has shown that it is possible for MIMO communication techniques to be used with multimode optical fibers to increase the available distance-bandwidth. However, implementation of traditional MIMO schemes requires the use of coherent optical detection which can lead to high system complexity and cost. This dissertation proposes a multimode fiber MIMO system architecture which allows simultaneous transmission of unique streams to different users on the same fiber while using incoherent detection with amplitude and phase modulation at the transmitter. The resulting capacity scales nearly linearly with the number of transmitters and receivers. Because the architecture requires channel state information at the transmitter, a training scheme appropriate for use with optical intensity detection is also discussed.
419

A Study of the Impact of Three Films Upon LDS College Students' Acceptance of Certain Patterns of Affection

Cunningham, William R. 01 January 1969 (has links) (PDF)
The purpose of this investigation was to try to measure the perceived effect of three films upon L. D. S. college student's attitudes toward premarital affection immediately after viewing each film and over a time interval of three to four weeks. The sample consisted of seven health classes (180 males and 195 females in total) in the Department of Health Education at the Brigham Young University. A questionnaire was devised by the investigator and used as the instrument to determine the student's perceived attitudes toward premarital affection.The students evidenced significance change in the conservative direction only after viewing the film "How Do I Love Thee." None of the three films effected attitude change over the time interval of three to four weeks. The favorable response, positive respones, and the perceived contributed information given for each film dropped over the time interval of three to four weeks.
420

A Descriptive Analysis of the Effectiveness of Broadcasting by The Church of Jesus Christ of Latter-Day Saints in the Northern States Mission Area

Donigan, Robert W. 01 January 1964 (has links) (PDF)
There has been no systematic study of the effectiveness of broadcasting by the Church of Jesus Christ of Latter-day Saints since the advent of TV and the nation-wide telecasting of the Annual and Semi-Annual General Conferences of the Church each April and October. In addition to determining effectiveness, there is a need to discover to what degree people watch or listen to religious programming in general, and what types of religious programs they wouldm most like to have available.The Northern States Mission of the Church, including all or part of Illinois, Wisconsin, Iowa, and Indiana, was seleceted as a represntative area for the purpose of the survey. Data was obtained by means of a questionnaire utilized in door-to-door proselyting by the L.D.S. missionaries in the mission area. The survey was conducted over a period of seven months, from October, 1963, through April, 1964, thus encompassing the broadcasting of two church General Conferences.

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