8 Commercial Streaming Systems – an Overview
Total Page：16
File Type：pdf, Size：1020Kb
Load more
Recommended publications
-
A Estereoscopia: Investigação De Processos De Aquisição, Edição E Exibição De Imagens Estereoscópicas Em Movimento
UNIVERSIDADE ESTADUAL PAULISTA “JULIO DE MESQUITA FILHO” FACULDADE DE ARQUITETURA, ARTES E COMUNICAÇÃO CURSO DE PÓS-GRADUAÇÃO EM DESENHO INDUSTRIAL ALEXANDRE VIEIRA MASCHIO A ESTEREOSCOPIA: INVESTIGAÇÃO DE PROCESSOS DE AQUISIÇÃO, EDIÇÃO E EXIBIÇÃO DE IMAGENS ESTEREOSCÓPICAS EM MOVIMENTO. Bauru 2008 2 UNIVERSIDADE ESTADUAL PAULISTA “JULIO DE MESQUITA FILHO” FACULDADE DE ARQUITETURA, ARTES E COMUNICAÇÃO CURSO DE PÓS-GRADUAÇÃO EM DESENHO INDUSTRIAL ALEXANDRE VIEIRA MASCHIO A ESTEREOSCOPIA: INVESTIGAÇÃO DE PROCESSOS DE AQUISIÇÃO, EDIÇÃO E EXIBIÇÃO DE IMAGENS ESTEREOSCÓPICAS EM MOVIMENTO. Dissertação apresentada ao Curso de Pós- Graduação em Desenho Industrial, da Faculdade de Arquitetura, Artes e Comunicação da Universidade Estadual Paulista “Júlio de Mesquita Filho”, Campus Bauru, para a realização da Defesa de Mestrado, requisito para a obtenção do título de Mestre. Orientador: Prof. Dr. Olimpio José Pinheiro Bauru 2008 3 UNIVERSIDADE ESTADUAL PAULISTA “JULIO DE MESQUITA FILHO” FACULDADE DE ARQUITETURA, ARTES E COMUNICAÇÃO CURSO DE PÓS-GRADUAÇÃO EM DESENHO INDUSTRIAL ALEXANDRE VIEIRA MASCHIO A ESTEREOSCOPIA: INVESTIGAÇÃO DE PROCESSOS DE AQUISIÇÃO, EDIÇÃO E EXIBIÇÃO DE IMAGENS ESTEREOSCÓPICAS EM MOVIMENTO. Dissertação apresentada ao Curso de Pós- Graduação em Desenho Industrial, da Faculdade de Arquitetura, Artes e Comunicação da Universidade Estadual Paulista “Júlio de Mesquita Filho”, Campus Bauru, para a realização da Defesa de Mestrado, requisito para a obtenção do título de Mestre. COMISSÃO EXAMINADORA _______________________________________ Prof. Dr. Olimpio José Pinheiro Universidade Estadual Paulista - UNESP _______________________________________ Prof. Dr. Hélio Augusto Godoy de Souza Universidade Federal de Mato Grosso do Sul - UFMS _______________________________________ Prof. Dr. Dorival Campos Rossi Universidade Estadual Paulista - UNESP Bauru, ____ de _______________ de 2008 4 Agradecimentos Reconheço-me imensamente devedor pelas contribuições científicas recebidas dos professores e pesquisadores: Prof. -
Effectuation in the Management of Knightian Uncertainty: Evidence from the Realnetworks Case
EFFECTUATION IN THE MANAGEMENT OF KNIGHTIAN UNCERTAINTY: EVIDENCE FROM THE REALNETWORKS CASE Saras Sarasvathy And Suresh Kotha Mackenzie Hall, 353200 University of Washington Business School Seattle, WA 98195 Tel: (206) 221-5369 Fax: (206) 685-9392 Email: [email protected] Email: [email protected] November 19, 2001 ________ Please send all correspondence to Saras Sarasvathy. We thank Tom Lee and S. Venkataraman for their valuable comments and suggestions on an earlier version of this paper and Margaret Johnston at RealNetworks for assisting us with the data collection. 1 EFFECTUATION IN THE MANAGEMENT OF KNIGHTIAN UNCERTAINTY: EVIDENCE FROM THE REALNETWORKS CASE Abstract Using an in-depth case study of the creation of RealNetworks, a leading internet firm specializing in streaming media, we test hypotheses based on causation and effectuation in entrepreneurship. Specifically, we demonstrate how RealNetworks used the three principles of effectuation embedded within the logic of control – (1) affordable loss, (2) strategic partnerships, and (3) leveraging contingencies – to deal with complex and multiple manifestations of Knightian uncertainties in its micro and macro decision environments. 2 Causal rationality, with its emphasis on maximizing expected return, and avoiding surprises through accurate prediction and comprehensive competitive analysis, has long served as the foundation for both research and pedagogy in economics and business management. But since Knight’s thesis in 1921, unpredictability has been acknowledged as the basis for entrepreneurial profits. Yet, few alternatives to predictive rationality have emerged. The predominant alternatives consist of either: (1) assuming the existence of traits-based constructs such as judgment (Knight, 1921), mother wit (Olson & Kahkonen, 2000), and entrepreneurial orientation (Lumpkin & Dess, 1996); or (2) “throwing darts,” i.e., the idea that lots of people try lots of different things, some succeed, and most fail. -
Practical Streaming Video on the Internet for Engineering Courses On- and Off-Campus
Session 3220 Practical Streaming Video on the Internet for Engineering Courses On- and Off-Campus Hai-Shuan Lam, Kurt Gramoll University of Oklahoma Abstract Over the last few years, the Internet has been increasingly used for education and research purposes. In particular, since the introduction of streaming video technology for the Internet, there has been a large interest in broadcasting engineering courses in part over the Internet. This paper discusses topics on how to prepare a streaming video in several inexpensive ways within an organization for engineering education. Studies have been made using different software, hardware, and video properties such as frame rate, streaming rate, and movie size. The major concern for preparing a streaming video lecture for engineering course is the visibility of diagrams and equations written on the chalkboard or whiteboard. Experiments have been done on Microsoft Netshow, RealNetwork Real Publisher, Apple QuickTime, and Vivo Active Producer. The cost and the ease of implementation were taken into consideration. This paper also presents the results of actual classroom use of streaming video for Engineering Statics course and a Leadership for Engineers course. Both courses have been taught in the Spring and Fall of 1998, and the Spring of 1999. I. Introduction Since Fall 1998, the College of Engineering at the University of Oklahoma (OU) has implemented a Laptop Program, which extends the use of electronic media for enhancing the engineering education. Starting from Fall 1998, the program requires every freshman engineering student to own a laptop. Over the next 4 years, all the undergraduate courses will be taught with the help of a laptop computer. -
Digital Video for the Next Millenium
DIGITAL VIDEO FOR THE NEXT MILLENNIUM INTRODUCTION At the end of 1998, networked digital video was very much a work in progress. Digital video files could be created, shared and stored but not in the robust, transparent manner that computer users expect and receive for other applications. Digital video client/server systems supported modest implementations but did not scale to adequately support high- bandwidth traffic or shared services among multiple locations. A critical issue for digital video client/server systems was their inherently proprietary nature. Moving assets from one system to another could require re-encoding of video assets, or at the very least, re- authoring of Web pages providing access to the video assets. File format support required specific encoder systems and decoders at the client. Asset management and file indexing capabilities were generally weak. Digital video vendors are very committed to product development, with the result that innovative services are announced almost daily. The state of the art is fluid and exciting. Five institutions--University of North Carolina, Chapel Hill, University of Tennessee, Knoxville, Georgia Institute of Technology, NYSERNet, and North Carolina State University, established the Video Development Initiative (ViDe) in 1998 to identify and prioritize digital video development issues. This ambitious goal involved issuing an RFI to vendors to identify and evaluate the existing state of the art and then selecting partners among responding vendors to develop highly scalable, functional, interoperable and robust access to video resources, across platforms, client/server systems, institutions and countries. The Southeastern University Research Association (SURA) awarded ViDe a grant for Phase I of this multi-year initiative.