[pt] A presente dissertação tem como tema de estudo a caracterização do canal do Global Positioning System (GPS) para ambientes urbanos. O objetivo do presente estudo é determinar a influência de diversos tipos de ambiente urbano no erro de posição horizontal do receptor GPS, com a finalidade de corroborar se, sob estas condições, o sistema oferece um serviço de posição de acordo com os requerimentos da Federal Communications Commission.Apresentam-se nos diferentes capítulos da dissertação os conceitos básicos do GPS, os procedimentos utilizados na campanha de medidas, as características mais importantes dos ambientes nos quais as mesmas se realizaram e os resultados obtidos, assim como suas análises. Além disso, apresentam-se as configurações dos ambientes utilizados nas simulações, os cálculos para determinar a relação entre azimute e elevação para cada um dos tipos de ambiente adotados, os resultados das simulações e as análises das mesmas. Finalmente, apresentam-se as conclusões para os resultados obtidos durante a campanha de medidas e as simulações, assim como indicações para estudos futuros. / [en] The present dissertation analyzes the propagation channel of the Global Positioning System (GPS) for urban environments. The objective of the study is to determine the influence of different types of urban environments in the error of the horizontal position provided by the GPS receiver. In particular, it investigates if, under degraded conditions, the system is still able to offer a positioning service in accordance to the requirements of the Federal Communications Commission (FCC). The different chapters of the dissertation present the basic GPS concepts, the adopted procedures to perform measurements, as well as the most relevant characteristics of the environments where measurements took place. In continuation, results are described, followed by their analysis. The configurations of environments used in the simulations are depicted, as well as the computations to determine the relationship between azimuth and elevation for each type of environment. Results of such computations and their corresponding analyses are presented for each simulation case. Finally, conclusions on the results obtained from the measurement campaigns and simulations, as well as suggestions for future studies are presented.

This study applies a critical discourse analysis framework to an examination of the constitutive effects of three regulatory proceedings, called “The Computer Inquiries,” on contemporary notions about communications infrastructure policy. The Computer Inquiries are a trio of interrelated U.S. Federal Communications Commission (FCC) dockets focused on problems posed by the convergence of regulated telephony with unregulated computing services. The Inquiry docket texts, which date from the mid-1960s to the late 1980s, are a basis for the liberalization of common carrier1 regulation and are the empirical evidence that the dissertation draws upon to trace the incremental evolution of terms used to define the boundaries between these converging services. Datasets include the 23 documents contained in three case studies: Computer Inquiry I (FCC Docket 16979), Computer Inquiry II (FCC Docket 20828), and Computer Inquiry III (FCC Docket 85-229). The first case study traces the incremental construction of a concept called “hybrid” services as the foundation for an FCC policy of “maximum industry separation” between common carriers and data processing companies. The second case study illustrates how the FCC subsequently re-engineered the hybrid concept into regulatory categories of “basic” and “enhanced” services. This definitional shift justified liberalizing the FCC’s maximum separation policy into a “modified” policy based upon a resale structure. The third case study demonstrates how the FCC further relaxed the resale policy by implementing accounting controls to distinguish between regulated common carriers providing the telecommunications infrastructure (conduit) used by unregulated information services (content) companies. Research reveals the malleable and somewhat arbitrary nature of regulatory distinctions between content and conduit as a basis for the FCC’s shifting jurisdictional authority over common carriers. During the course of the Inquiries, the FCC transitioned from a proactive to a reactive regulator with a discursive strategy involving what the dissertation calls “linguistic engineering.” Finally, the study notes the lack of attention to First Amendment and democracy concerns in all three Inquiry dockets. The dissertation concludes by calling for a Fourth Computer Inquiry to reconsider the legacy of the Computer Inquiries through which the principle of nondiscriminatory carriage of information by telecommunications providers has been eroded. / text

Philosophiae Doctor - PhD / The deliberate and sometimes unwitting complicity of psychology with apartheid social formations has received little attention in the psycho-historical literature. This, study in an attempt to break the silence, offers a descriptive characterization of South African psychology by tracing its origins, evolution, formalization and development to its ethnoscientific, colonial and apartheid roots. The study begins with an examination of the globalization of Euro-American psychology. The proliferation and domination of Euro-American psychology closely correlates with the emergence and globalization of colonial power that is intimately connected to the missionary discourses of conquest and conversion and to the doctrines of scientific racism. Western explorers, soldiers, missionaries, and social scientists are among the figures who participated in the occupation and conversion of the 'Dark Continent' of Africa. Within the context of colonialism, psychology became an enterprise of conquest and conversion that endeavoured to understand how people of colour, 'marginal beings', could be transformed into active subjects The history of South African psychology provides an illuminating illustration of how psychological discourse and practice may be employed for the purposes of oppressive social engineering. Besides projecting psychological intervention as vital to the alleviation of economic, social and industrial problems, psychologists utilized their expert roles in the Carnegie Poor White Study, in the Air-force and in industry and objects of Western racial and economic exploitation. The history of South African psychology provides an illuminating illustration of how psychological discourse and practice may be employed for the purposes of oppressive social engineering. Besides projecting psychological intervention as vital to the alleviation of economic, social and industrial problems, psychologists utilized their expert roles in the Carnegie Poor White Study, in the Air-force and in industry to rationalize and bolster White economic and political hegemony. The racial overtones that characterized the establishment of a professional association represents a startling example of how apartheid ideology was reproduced within the profession itself Unfortunately, oppressive discourse appears to continue to inform the research agenda, practices and theoretical concerns of many South African psychologists, thereby creating the impetus for the present crisis within the discipline. The crisis relates to, among other issues, the failure of Euro-American psychology to represent the psychological experiences of people of colour. Attempts at resolving the crisis are stymied by the production and reproduction of conceptual paradoxes within the fields of family therapy, community psychology and cross-cultural psychology, fields that are often portrayed as the solution to the crisis. Despite the increasing levels of theoretical complexity and ideological scrutiny each of these fields offer, South African psychology still faces various epistemological challenges and communieentric biases. A content analysis of 977 articles that appear in the South African Journal of Psychology, Psychologia Africana, the Journal of Behavioural Science, Psychology in Society, Humanitas. Psygram and the South African Psychologist confirms that the crisis in psychology continues. Details obtained from the analytical review show South African psychology, between 1948 and 1988, to be characterized by five features. First, Whites and males affiliated to the open liberal universities and Afrikaans universities dominate knowledge-production in the discipline. Blacks and women authors, especially those affiliated to the historically Black universities, tend to occupy mainly co-authorship positions at the level of publication. Second, the majority of articles reviewed are written in English. Third, whereas the bulk of articles analysed are empirical in nature, there is an increasing trend towards theoretical articles that examine the ideological and philosophical premises of the discipline. Fourth, empirical studies tend -to select subjects from both male and female gender groups, who are mainly White, and mostly affiliated to institutional settings. Fifth, research is dominated by an emphasis on conventional areas such as psychometrics, research methodology, industrial psychology and educational psychology. The more recently evolved fields such as community psychology and the psychology of oppression receive little attention. By moving to a point beyond critique and characterizations, the study concludes with an exploration of the dynamic quest for liberatory psychology, central to which is the formulation of an emancipatory agenda. An emancipatory agenda may well propel progressive psychologists towards systematically addressing the silences within the field, securing the centralization of Blacks and women at the levels of knowledge production and political representation and creating liberatory epistemologies.

This study sets forth events surrounding a law suit filed by Red Lion Broadcasting Co. against the Federal Communications Commission and the Democratic National Committee in 1965. The study found these events were major factors in the decision by John M. Norris, president and owner of Red Lion, to pursue his objection to the FCC's Fairness Doctrine to the U.S. Supreme Court, resulting in the court's landmark decision in Red Lion vs. FCC (1969). Research methodology combined techniques of historical research and case study. On-site research of company records, personal letters and records are included as primary sources.

Master of Arts / Department of Economics / Dennis L. Weisman / The Internet is a network that consists of content providers and users connected to each other through the communication lines managed by network providers. Network neutrality rules are designed to protect independent content providers from unjust discrimination by network providers. This report explores the economic rationale for net neutrality rules, how the regulation should be enforced, and its potential effects on competition. The report finds that net neutrality encourages competition among content providers by subsidizing content provider access but concentrates the market for network providers by forcing network providers to compete primarily through price competition. It considers this to be a beneficial arrangement for economic growth, but observes that there is a potential for all sides of the market to be subsidized by advertiser fees. It also shows that despite the Federal Communications Commission's heavy involvement with network neutrality rules, these rules are actually based in a long history of antitrust regulation. It concludes, however, that the current regulatory environment is sufficient for enforcing net neutrality rules.

Net neutrality is currently one of the most topical government policies up for debate. In the following paper, I will examine three cases in which net neutrality has been threatened by internet service providers and the Federal Communications Commission and reinforced by public interest groups, major website companies, and the public. The online regime has been a critical instrument in the outcome of all three cases, highlighting the role and influence of internet users in the virtual and physical public spheres. Some say that the battle is already lost. FCC Chairman Ajit Pai and his Republican majority in the agency are set on and have the capacity to push through legislation that will undo strict regulation of ISPs set by the Obama administration. The vote has yet to take place later this month, but the result should not detract the democratic nature and value from the decade-long debate. Net neutrality has been demonstrative of a civil society, one that uses all the tools, techniques, and platforms available to them in the fight against corporate interest. For its relation to First Amendment rights, its goals of redeeming public interest to rightful owners, and its use of new public spheres to organize civic participation, net neutrality is not only necessary for the success of the Internet, but the debate around it is also indicative of and essential to the growth of democratic debates around public policy.

This paper examines the Net neutrality, or argument that the Internet should remain and open and equal platform, debate in the United States up to November 2010. After critically examining the past regulatory and legislative efforts, the feasibility of alternate solutions invested in protecting citizens' interests is examined.

The purpose of this project was to develop a semester length community college curriculum for a course in the theory and servicing of digital-high definition television for the students in the service technology field of electronics at Santa Ana Community College in Santa Ana, California. Additionally, it is designed with the current electronic service industry in mind.

This study explored the development of the Federal Communications Commission's Fairness Doctrine policy from its beginnings in the 1920's until the FCC eliminated most of its requirements in 1987. The chapters discuss the Reverend Carl D. McIntire's battle with the FCC concerning the policy's impact on free speech in broadcasting. McIntire lost his battle with the FCC and became the first broadcaster to lose his license for Fairness Doctrine violations. The problem in this study focused on the difficulty of reconciling government regulation of broadcasting with the rights of licensees to speak freely and be heard by their listeners. The study concluded that today the FCC advocates First Amendment protection for broadcasters but it remains questionable whether present policy will continue.

In 1971, radio station KGBS, Los Angeles, developed a format featuring a male host taking telephone calls from females only who discussed explicit sexual experiences over the air. Many other radio stations in the United States programmed this "sex-talk" format until 1973, when the Federal Communications Commission took steps to eliminate it. This study examines the origin, development, success, causes for eventual demise, and impact upon the broadcasting industry of the sex-talk format. The United States Congress pressured the FCC to act on the sex-talk format, and the study concludes that broadcasters would not have succumbed to government pressure if they had not feared governmental intrusion in programming and Congressional rejection of license renewal legislation.