No description available.

published_or_final_version / Economics / Master / Master of Social Sciences

by Chun-kit Chan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1995. / Includes bibliographical references (leaves 68-[73]). / Chapter 1 --- A High-Speed All-Optical Tunable-Channel Multi-Access (TCMA) Network --- p.1 / Chapter 1.1 --- Introduction --- p.1 / Chapter 1.2 --- Tunable-Channel Multi-Access (TCMA) Networks --- p.4 / Chapter 1.3 --- Protocols For TCMA Networks --- p.5 / Chapter 1.3.1 --- Media Access Procedure For ACTA Protocol --- p.6 / Chapter 1.3.2 --- Cyclc Utilization & Adaptive Algorithm --- p.8 / Chapter 1.3.3 --- Advantages of ACTA Protocol --- p.9 / Chapter 1.4 --- Proposed High-Speed Photonic TDM Implementation --- p.10 / Chapter 1.4.1 --- Centralized Pulse Source --- p.12 / Chapter 1.4.2 --- Channel-Tunable Transmitter --- p.14 / Chapter 1.4.3 --- High Speed All-Optical Demultiplexing --- p.22 / Chapter 1.4.4 --- Timing and Synchronization --- p.23 / Chapter 1.4.5 --- Advantages of the Proposed Scheme --- p.24 / Chapter 1.5 --- Other Network Issues --- p.25 / Chapter 1.5.1 --- Scalability --- p.25 / Chapter 1.5.2 --- Surviability --- p.26 / Chapter 1.5.3 --- Cost-Effectiveness --- p.27 / Chapter 1.6 --- Conclusion --- p.28 / Chapter 2 --- Theoretical Analysis of High Repetition Rate Optical Pulse Multiplication using Fiber Coupler Loop Configuration --- p.29 / Chapter 2.1 --- Introduction --- p.29 / Chapter 2.2 --- Single Coupler Loop Configuration --- p.30 / Chapter 2.3 --- Cascaded Coupler Loop Configuration --- p.34 / Chapter 2.4 --- Discussion --- p.36 / Chapter 2.5 --- Conclusion --- p.38 / Chapter 3 --- Spectrum Analysis of Multichannel CATV Systems --- p.39 / Chapter 3.1 --- Introduction --- p.39 / Chapter 3.2 --- Considerations of Analysis of Multichannel CATV Systems --- p.41 / Chapter 3.3 --- Effects of Incomplete-cycle Sampling --- p.43 / Chapter 3.4 --- Methods to Alleviate the Incomplete-cycle Sampling Effcct --- p.48 / Chapter 3.4.1 --- Windowing --- p.48 / Chapter 3.4.2 --- Correction --- p.54 / Chapter 3.5 --- Nonlinear Distortion in Multichannel CATV Systems --- p.55 / Chapter 3.5.1 --- Two-tone Third Order Distortion Estimation --- p.56 / Chapter 3.5.2 --- Composite Triple Beat Estimation --- p.62 / Chapter 3.6 --- A Procedure of Spectrum Analysis for Multichannel CATV Systems --- p.64 / Chapter 3.7 --- Conclusion --- p.67 / Bibliography --- p.68 / Chapter A --- Implementation of a high-speed TCMA optical network --- p.74 / Chapter A.1 --- System Setup --- p.74 / Chapter A.2 --- Channel-tunable Delay Line Circuit --- p.75 / Chapter A.3 --- DFB Laser diode --- p.76 / Chapter A.4 --- Erbium-doped Fiber Amplifier (EDFA) --- p.76 / Chapter A.5 --- 1 Gb/s to 16 Gb/s Fiber Multiplexer --- p.77 / Chapter A.6 --- Nonlinear Amplifying Loop Mirror (NALM) --- p.77 / Chapter A.7 --- Decision Circuit --- p.78 / Chapter B --- Frequency Assignment Scheme of CATV Systems --- p.79 / Chapter C --- Derivation --- p.80 / Chapter C.1 --- Channel Carrier Power Level Variation with Rectangular Window --- p.81 / Chapter C.2 --- Channel Carrier Power Level With Hanning Window Function ´Ø --- p.82 / Chapter C.3 --- Correction Factor for the Channel Carriers --- p.83 / Chapter C.4 --- Correction Scheme for Distortion Terms --- p.83

The Cable Television Channel Planning and Management Regulations, which was promulgated on December 13 in 2004, indicate clearly that each cable station¡¦s third channel is ¡§the public channel¡¨ to practice community people¡¦s ¡§media access rights¡¨. Its major purposes are to protect the freedom of speech, to ensure citizens having channels to express their opinions, and to facilitate the diverse social developments. Theoretically, public access channel should be viewed as the public sphere. Practically, due to the characteristics of local cable television, it is expected to preserve local culture, to educate the local people the functions of regional media, and to contribute to community development. Especially in today Taiwan¡¦s media environment, most media are controlled by the political and business forces and vested interest organizations, the local voice could not be heard in the mainstream media. This survey chose the public accessible channel 3 of the local cable stations in Tainan County (thereinafter referred as Tainan County Third Public Television Service) as study objects. There were three purposes of this study¡Xfirst of all, to understand the current situation of public access channels operated by local cable television stations and how public access channels apply to public affairs; second, to propose the appropriate operational modes for cable television stations by evaluating the difficulties and problems of practicing public affairs; and third, to discuss how public policy could be extend and constructed to create community interaction and hence a citizen society by exploring the interaction between local government and media and analyzing the best operational mode of public access channel. The results of this study indicated that due to the mutual interest structure of politics and businesses, the local government does not fulfill the role of administrator. The responsibility of media to promote civic society was abandoned or fulfilled just merely nominal by the local cable television owners. The channel for public participation is turned back to the communities. Based on the findings of this study, there are two suggestions for policy revision: first, amending the Cable Radio and Television Law and enacting the clauses of rewards and punishments for channel management to ensure the participation of public affairs; second, the public access channels of cable television stations should serve as a platform for video production for the public. This study mainly explored the possibility of using the public access channels of cable television to practice public affairs. Due to the scopes and limits of research design, the case examined was limited to the case of Tainan County. Advance studies could be focused on the performance of the provision of programs (i.e. programs in social community education, etc.) to contribute to the public sphere and civic society.

Abstract At present, the pervasion of cable television (CATV) is over 85% in Taiwan, so that the digitalization of CATV has brought an important influence to the Taiwan television industry. The purposes of this study are to explore the key factors of influencing digital cable television (CDTV) user¡¦s adoptive behavior by technology acceptance model (TAM). An extended TAM incorporating the notion of compatibility, trialability, observability, habits and network externality. Collecting data form one CDTV operators by convenience sampling. This study found that compatibility, trialability, observability, habites are directly positive to the perceived usefulness and perceived ease of use, whereas, the network externality was negative to perceived usefulness and perceived ease of use. In addition, network externality, perceived usefulness and perceived ease of use were directly positive to the behavioral intention to use. This study suggest that CATV operators could especially regard for providing ample and quality digital content and beta test of CDTV and making the CDTV simple to manipulate, while promote CDTV.

Thesis (M.S.)--Kutztown University of Pennsylvania, 1991. / Source: Masters Abstracts International, Volume: 45-06, page: 2724. Abstract precedes thesis as 3 preliminary leaves. Typescript. Includes bibliographical references (leaf 48).

Thesis (Ph. D.)--Michigan State University. Dept. of Telecommunication, Information Studies and Media, 2006. / Title from PDF t.p. (viewed on June 19, 2009) Includes bibliographical references (p. 108-116). Also issued in print.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 84-86). Also available via the Internet.

No description available.

No description available.