The enterprises of cable TV have to face much more pressure than ever; the reason is not only the rapid development of information technology but also the changes of market demand and the competition of the same business in Taiwan. In order to strengthen the competitive force in the radical market, cable TV companies have started to make plans and financial investments of adopting Information Systems (IS). Even though the cable TV firms have recognized the benefits of IS adoption, but they are still looking for the more efficient way of using IS to improve the business. Based on the significance of IS adoption and the lack of related empirical studies, this research endeavors to examine the factors which affect the cable TV enterprises on their tendency to adopt IS. The factors are selected from four dimensions¡G Characteristics of IS, characteristics of IS supplier, characteristics of environment, characteristics of organization. The important discoveries of this research as follows: 1. The operating structures of IS will affect the effectiveness of the cable TV companies. 2. The frequency of IS replacement will affect the measurement of cost by their cognition in cable TV firms. 3. The distinct style of leadership will affect the training time and cost of the new IS adoption. 4. The most of investigated firms are satisfied with the IS they adopted. 5. The capability of consultants fitted with the awareness of the Cable TV enterprises. 6. The group cable TV firms value the marketing share of IS suppliers more than the independent ones. 7. The group cable TV firms have less competitive pressure than the independent ones. 8. The large scale of cable TV firms have much more investment of IS than the small ones. 9. The smaller cable TV firms value the support of executive managers more than the bigger ones.

[pt] A presente dissertação pretende descrever e analisar as potencialidades futuras oferecidas por sistemas CATV operando serviços de comunicação iterativos e de faixa larga. Neste contexto, visando determinar as configurações mais adequadas para a parte óptica da rede, são analisadas diversas alternativas de implementação envolvendo os dispositivos constituintes básicos: laser, modulador externo, EDFA, e fibra, sendo neste último caso, tanto a utilização de fibra padrão quanto a de dispersão deslocada. Dentro do espírito de serviços de faixa larga, implementa- se em laboratório um sistema WDM com duas portadoras ópticas. A primeira, em 1310 nm, é modulada em intensidade com 2.48 Gbits/s. a segunda, em 1550nm, é modulada em AM- VSB. As interferências mútuas são então medidas e confrontadas com resultados previstos teoricamente, validando este último modelo. A formulação teórica permite então prever a deterioração mutua em um WDM com duas portadoras digitais em 2.48Gbit/s. Os resultados obtidos sugerem a viabilidade deste último arranjo para portar vídeo digitalizado. Dando seqüência, são apresentadas novas soluções para compressão de vídeo, técnicas de modulação e tecnologias de transporte. Finalmente, os resultados obtidos anteriormente, tanto os práticos quanto os teóricos e os simulados, são usados para propor novas arquiteturas de redes de CATV explicitando as sugestões para o caso de redes HFC (preferencialmente destinado a operadoras de TV a cabo) e também para configurações FTTC, estas últimas, preferencialmente destinadas às operadoras telefônicas. / [en] This work is aiming at discussing the future possibilities the CATV systems are likely to offer, concerning iterative communications and broadband services. In what concerns the system optical section, a search is carried out in order to reach suitable arrangements and configurations concerning the basic used components, namely: laser, external modulator, EDFA and the optical fiber. Both standard and dispersion shifted fiber utilization are considered. Considering broadband utilization, a practical experiment is carried out. A two carrier WDM system is tested in the laboratory. The first carrier - 1310 nm - is digitally modulated at 2.48 Gbit/s, while the second one - 1550 nm - carries an AM-VSB modulation. Crosstalk is measured and the obtained results are compared with those from a proposed theoretical model. A satisfactory agreement validates the model. Next, the same model is then used for predicting crosstalk level in another two carrier WDM, however now, with both carriers being digitally modulated at 2.48 Gbit/s. the obtained results suggest that this last arrangement is worthwhile to be used for efficiently carrying digital video. A discussion on new solutions for video compression, modulation formats and transport techniques is follwed. The work is closed with a number of new CATV network solutions being suggested. Previously obtained results and performed suggestions are used for achieving two basiv lines of applications. The first one is based on HFC arrangements, mainly conceived for cable TV operators. The second on is based on FTTH arrangements, being this last suggestion better suited for traditional telephone companies.

Orientadores: Hermano Medeiros Ferrera Tavares, Marcos Carneiro da Silva / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e Computação / Made available in DSpace on 2018-08-07T03:17:59Z (GMT). No. of bitstreams: 1 Navarro_MaristelaDomeni_M.pdf: 2037867 bytes, checksum: a858cc3260dae4659d1b3cdfece3f4f9 (MD5) Previous issue date: 2006 / Resumo: Este trabalho objetiva verificar a viabilidade da utilização da rede das operadoras de televisão à cabo para medição remota e tarifação diferenciada de energia elétrica para consumidores alimentados em baixa tensão - Grupo B. Envolve a criação de protótipos de hardware e software para controle da comunicação, obtenção dos dados e controle operacional dos medidores de energia executados remotamente a partir de uma central. A arquitetura implementada tem três elementos principais: o Ponto de Presença, instalado no quadro de medidores do consumidor; o Controlador Central de Comunicação, instalado na operadora de televisão à cabo, responsável pela comunicação com os Pontos de Presença monitorados e pela concentração e envio de informações ao Centro de Aplicações, o último elemento da arquitetura. Resultados foram coletados e avaliados, abordando aspectos como a viabilidade técnica, vantagens e desvantagens. Esse trabalho proporcionou ainda um breve estudo de novas formas de comunicação remota com medidores usando outros meios físicos de comunicação / Abstract: This work was developed to verify the viability to use the cable TV infra-structure for remote measurement and billing for consumers fed in low tension - Group B. It involved the creation of hardware and software prototypes for control of the communication to collecting data remotely of the energy meter from a central office. The implemented architecture has three main elements: the Point of Presence, installed at the consumer side; the Central Controller, installed in the Cable TV headend, responsible for the communication with the Points of Presence and for the concentration and sending of information to the Application Center, the last element of the architecture. Results had been collected and evaluated, taking into account aspects as the viability technique, advantages and disadvantages. This work still provided a briefing study of new ways of remote communication with the energy meters using other infra-structure of communication / Mestrado / Automação / Mestre em Engenharia Elétrica

Research questions:          RQ 1: What factors affect consumer behavior regarding streaming   services or TV-services? RQ 2: How do the factors affect consumers behavior when it comes to buying, continuing, substituting or ending a streaming service or TV-service?   Purpose:             We aim to discuss the underlying reasons, or factors as to  why consumers buy, substitute, continue or end subscriptions to   traditional TV, streaming services, or both mediums. We aim to use   focus groups to see if factors earlier quantifically studied can be   identified and supported qualitatively. This study will add to the   variability of the issue of streaming services versus traditional TV with   an in-depth view using a qualitative study on a Swedish sample.  Method:               A qualitative research method as well as a data driven content analysis   was chosen for this study. The data was collected by interviewing three   focus groups. Conclusion:       Cost was an important factor and was applicable in all factors and  behaviors. Cost was not a top priority for the informants unless the   increase was drastic. Range of content and specific content was a top  deciding factor for most behaviors, convenience was strongly   connected to continuing a service. Habit was a strong factor in   relation to continuing, technology was an important aspect   when it comes to usage. Other factors, such as bundling, leeching,   social components, free trial period or triggers are also significant,   however not deciding factors.

為探討台灣有線電視收視戶對「分級付費制度」之接受意願，本文參考相關文獻，建立台灣有線電視收視戶對「分級付費制度」接受意願的邏輯式模型（logit model），並採用中央通訊社於2000年8月針對台灣有線電視收視戶進行電話訪查之調查資料進行實證分析，先以圖表進行交叉分析，再進行邏輯式迴歸分析，探討消費者人口統計變數（如性別、教育程度等）、收視行為資料（如每日收看有線電視時數、最常收看頻道數等）對「分級付費制度」接受意願之影響程度。依實證結果，男性、教育程度較高、年齡較大、每日收看有線電視時數較低、收看頻道數目較少及目前繳交有線電視費用較高之收視戶，較有意願接受「分級付費制度」。 / To analyze Taiwan cable TV viewers’ willingness to accept the tiering system, this study first attempts to build a theoretical model of cable TV viewers’ willingness to accept the tiering system based on prior related researches. Secondly, this study applies the logit model to estimate cable TV viewers’ willingness to accept the tiering system based on Central News Agency (CNA) 2000 survey data of cable TV viewers. The empirical results show that male viewers are more willing to accept the tiering system than female. Besides, age, education and current monthly cable TV fee have significantly positive impact on cable TV viewers’ willingness to accept the tiering system while daily watching hours and the number of channels viewed have significantly negative impacts.

A indústria de TVa cabo está num caminho convergente com o setor de telecomunicações por força dos avanços tecnológicos relacionados à informática. As redes das operadoras de cabo têm a possibilidade de se transformarem num elemento central na evolução da sociedade da informação. Essa dissertação investiga a estrutura competitiva atual da indústria de TV a cabo brasileira. Para isso, lança mão dos conceitos de Michael E. Porter (1980). Além disso, são descritos possíveis desdobramentos na evolução da estrutura do setor, na visão de especialistas da indústria. / The Cable Industry and the Telecommunications Industry are converging due to technological innovation mainly related to computer sciences. Cable networks have the potential to become a central element on the information society evolution. This paper investigates the Brazilian cable industry's current competitive structure. To do so, Michael E. Porter (1980) concepts are used. This paper also describes possible outcomes for structural evolution of the sector.

有線電視立法至今，有線電視系統業者間的競爭始終激烈，如何維持舊有的訂戶與增加新客戶，是有線電視系統業者所努力的課題，在有線電視產業強烈的競爭壓力下，如何爭取客戶的支持是業者努力的目標。本研究之宗旨在於以「客戶服務」的觀點出發，探討有線電視系統業者推行ISO 9002認證，藉由 ISO 9002品質系統運作於客戶服務部門之作業程序，達到部門服務品質的一致性，創造公司的競爭優勢。據此，本研究之主要目的如下： （一） 探討ISO 9002品質系統認證對有線電視客戶服務部門的意義。 （二） 探討有線電視客戶服務部門推動ISO 9002品質系統認證對客戶服務品質的影響。 （三） 探討有線電視客戶服務部門推行ISO 9002品質系統認證各項品質要求要項的內容、合適性評估與優先性 評估。 （四） 根據前述各項研究之結論，對有線電視系統業者提出具體的建議。 由於目前國內唯有一家有線電視系統通過ISO 9002認證，但其認證範圍多在工程施工品質方面。故本研究之進行主要以文獻探討、個案研究、兩次深度訪談及實地觀察等研究方法與工具，探討客戶服務部門之ISO 9002品質系統之作業程序與範圍。獲致之研究結論如下： 壹、ISO 9002品質系統對有線電視系統業者的意義。 （一）ISO 9002品質系統架構觀念 有線電視屬於「服務導向」的產業，適合以ISO 9002品質系統來進行品質管理或品質保證。業者在推行ISO 9002品質系統時，應以本身企業之運作目標與遠景，訂定明確的品質計劃，追求持續改善的品質系統，依循其品質制度的精神，徹底落實並不斷改善企業之品質系統，如此才能提昇企業的競爭力。 （二）ISO 9002品質系統對有線電視系統業者內部與外部之助益 貳、有線電視在推行ISO 9002品質系統時應注重與其它服務業的差異。 參、有線電視系統業者應釐清客戶服務部門之工作職掌與作業程序。 肆、有線電視客戶服務部門應用ISO 9002品質系統之適用範圍與內容。 伍、ISO 9002品質系統能夠提昇客戶服務部門之服務品質。 （一）幫助企業內部管理機制健全化。 （二）確保客戶服務品質，達到顧客滿意。 陸、客戶服務部門推行ISO 9002品質系統的合適性評估。 研究結果顯示，有線電視客戶服務部門作業程序，適合以ISO 9002品質系統來確保其服務品質， 其中以【4.9 流程管制】的得分最高。 柒、客戶服務部門推行ISO 9002品質系統要求條文的優先順序。 研究資料顯示客戶服務部門之作業程序以【4.9流程管制】得分最高。業者在推行ISO 9002品質系統時，應以此項最為優先。

有線電視的發展至今已將近半個世紀，隨著觀眾的需求逐漸增加、業者間的競爭日趨激烈，並配合傳播科技的進步，有線電視早已超越原本社區共同天線的原始功能，發展出更多頻道、自製節目、結合直播衛星與雙向互動等週邊功能。台灣地區的有線電視起步稍晚，並且直到民國八十二年才完成立法，到民國八十四年時，全省的用戶已超過三百七十萬戶，普及率在56.2%以上。 　　台灣地區過去長久以來缺乏地方性媒體，造成中央或北部以外的地區，民眾接受資訊的機會相對減少。而有線電視本屬於地方性媒體，因此其地方新聞遲來的出現，或可適時彌補此種缺憾。不過，有線電視台成立地方新聞部或製播地方新聞必須投注鉅額的資金，究竟業者成立新聞部或提供地方新聞能否滿足當地民眾的需求？本研究的主要目的即欲了解地方民眾是否需要有線電的地方新聞報導？其使用的情形若何？是否受到其他媒介行為或人口變項的影響？另外，本研究的次要目的也同時探討有線電視訂戶的特質為何。 　　本研究的結果發現二十歲以上、五十歲以下，本省籍、無特定政黨傾向與偶爾參加地方活動者，對地方新聞的需求最多。而受訪者對地方新聞的使用情形與人口變項、特質及媒介使用行為間無顯著差異。另外，裝設有線電視與年齡間有顯著差異，認為有必要裝設者，主要集中在二十歲以上、五十歲以下之間。

本研究欲探討媒介使用對政治知識的影響，研究重點為台灣新興媒體有線電視的國會頻道，及大眾傳播媒介報紙和電視，以八十二年底的台北縣長選舉為例，希望能找出台灣的新興媒體和既有媒體，在報導選舉議題時，所造成的效果為何，不同媒體間是否有所差異。 　　知溝假設提出的人口因素，也屬本研究範圍，本研究採知溝假設提出的『教育程度』、『年齡』、「性別』、和『政治興趣』等變項，希望找出人口變項與政治知識間的相關性。 　　由於研究經費、人力和時間的限制，本研究以居住在台北縣六個月以上，年滿二十歲，擁有此次台北縣長選舉投票權的選民為研究對象，採電話抽樣法，本研究的電話抽樣是由聯合報系民調中心的四十七萬筆電話資料庫中，以隨機取樣法抽出2349組電話號碼進行撥號，於82年12月6、7兩日於中國國民黨文工會民意調查辦公室進行施測。有效成功樣本數為558人，其中男性285人，女性272人。 　　本研究發現，報紙暴露量高低在政治知識方面，呈顯著差異，即報紙暴露量愈高政治知識愈高。而電視暴露量、電視新聞暴露量高低在政治知識上，並無顯著差異。 　　此外在人口變項方面，發現性別與教育程度各組在政治知識方面有顯著差異，教育程度愈高，政治知識愈豐富齡各組在政治知識方面差異則不顯著。在政治興趣方面，由以往研究顯示，政治興趣是預測政治知識的重要變項，在此研究中，同樣發現政治興趣各組在政治知識方面，呈高度顯著差異，政治興趣愈高，政治知識愈豐富。 　　本研究主要目的是探討新興媒體有線電視國會頻道（公共事務頻道）對選民政治知識的影響力，研究發現，有線電視國會頻道暴露量高低對政治知識影響並不顯著。在控制『政治興趣」與『人口變項』的影響力之後，亦無顯著差異。推測其原因，可能是有線電視國會或政治頻道收視習慣並未養成，而且此類頻道多單純播放國會議事或公聽會，形式僵硬，內容呆板，流於各說各話，無法提昇觀眾的注意程度。

A indústria de TVa cabo está num caminho convergente com o setor de telecomunicações por força dos avanços tecnológicos relacionados à informática. As redes das operadoras de cabo têm a possibilidade de se transformarem num elemento central na evolução da sociedade da informação. Essa dissertação investiga a estrutura competitiva atual da indústria de TV a cabo brasileira. Para isso, lança mão dos conceitos de Michael E. Porter (1980). Além disso, são descritos possíveis desdobramentos na evolução da estrutura do setor, na visão de especialistas da indústria. / The Cable Industry and the Telecommunications Industry are converging due to technological innovation mainly related to computer sciences. Cable networks have the potential to become a central element on the information society evolution. This paper investigates the Brazilian cable industry's current competitive structure. To do so, Michael E. Porter (1980) concepts are used. This paper also describes possible outcomes for structural evolution of the sector.