Personal communications

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1991.Includes bibliographical references (leaves 75-77).by Chi Chong Wong.M.S

Semi-structured capture and display of telephone conversations

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1992.Includes bibliographical references (leaves 81-85).by Debby Hindus.M.S

The annotation of continuous media

In principle, the presentation of continuous media is time-dependent. Examples of con­tinuous media are audio, video and graphics animation. This work is on the support for the annotation of continuous media, or the integration of voice comments with continuous- media documents like music and video clips. This application has strict synchronisation requirements, both with respect to the media involved and to user interaction. The applica­tion involves functions such as storage, management, control of GUIs, and of continuous- medium devices. These are realised by components which can be distributed across a network. New models and architectures have been defined to enable open distributed processing of applications, that is, distributed processing independent of operating systems. Abstractions are provided, which facilitate the development of applications, and these execute supported by platforms that implement such open architectures. These architectures have been based on an object-based client/server model. Our work aims at exploring object-orientation, open distributed processing and some characteristics of continuous media, through the development and use of the proposed application. The application is designed as a set of objects with well-defined functions and which interact between themselves. A distinguishing feature of the application is that it involves reusable components and mechanisms. For example, a mechanism, which enables components to control logical clocks and synchronise them, is incorporated in the application in response to its synchronisation requirements. The implementation is based on ANSAware, a platform that supports open distributed processing and allows distributed objects to bind to each other, to interact with one another, and to exhibit concurrent activities. The performance of the implementation is examined with respect to the application’s response to user requests. Response times of operations such as play, pause, etc., are measured, and the final results are better than a defined maximum tolerance. An analysis of the development approach is made with respect to support for real-time activities in the application, and to software reuse in the model proposed. This thesis concludes by reviewing the suitability of the object-oriented approach for the development of distributed continuous media applications

Parallel replication for distributed video-on-demand systems.

Lie, Wai-Kwok Peter.Thesis (M.Phil.)--Chinese University of Hong Kong, 1997.Includes bibliographical references (leaves 79-83).Abstract --- p.iAcknowledgments --- p.iiChapter 1 --- Introduction --- p.1Chapter 2 --- Background & Related Work --- p.5Chapter 2.1 --- Early Work on Multimedia Servers --- p.6Chapter 2.2 --- Compression of Multimedia Data --- p.6Chapter 2.3 --- Multimedia File Systems --- p.7Chapter 2.4 --- Scheduling Support for Multimedia Systems --- p.8Chapter 2.5 --- Inter-media Synchronization --- p.9Chapter 2.6 --- Related Work on Replication in VOD Systems --- p.9Chapter 3 --- System Model --- p.12Chapter 4 --- Replication Methodology --- p.15Chapter 4.1 --- Replication Triggering Policy --- p.16Chapter 4.2 --- Source & Target Nodes Selection Policies --- p.17Chapter 4.3 --- Replication Policies --- p.18Chapter 4.3.1 --- Policy 1: Injected Sequential Replication --- p.20Chapter 4.3.2 --- Policy 2: Piggybacked Sequential Replication --- p.22Chapter 4.3.3 --- Policy 3: Injected Parallel Replication --- p.25Chapter 4.3.4 --- Policy 4: Piggybacked Parallel Replication --- p.28Chapter 4.3.5 --- Policy 5: Injected & Piggybacked Parallel Replication --- p.34Chapter 4.3.6 --- Policy 6: Multi-Source Injected & Piggybacked Parallel Replication --- p.36Chapter 4.4 --- Dereplication Policy --- p.37Chapter 5 --- Distributed Architecture for VOD Server --- p.39Chapter 5.1 --- Server Node --- p.40Chapter 5.2 --- Movie Manager --- p.42Chapter 5.3 --- Metadata Manager --- p.42Chapter 5.4 --- Protocols for Distributed VOD Architecture --- p.43Chapter 5.4.1 --- Protocol for Servicing New Customers --- p.43Chapter 5.4.2 --- Protocol for Servicing Existing Customers --- p.45Chapter 5.4.3 --- Protocol for Single/Multi-Source Injected & Parallel Replication --- p.46Chapter 5.4.4 --- Protocol for Dereplication --- p.48Chapter 5.5 --- Failure Handling --- p.49Chapter 5.5.1 --- Handling of Server Node Failures --- p.50Chapter 5.5.2 --- Handling of Movie Manager Failures --- p.52Chapter 6 --- Results --- p.55Chapter 6.1 --- Performance Metric --- p.56Chapter 6.2 --- Simulation Environment --- p.58Chapter 6.3 --- Results of Experiments without Dereplication --- p.59Chapter 6.3.1 --- Comparison of Different Replication Policies --- p.60Chapter 6.3.2 --- Effect of Early Acceptance/Migration --- p.61Chapter 6.3.3 --- Answer to the Resources Consumption Tradeoff issue --- p.62Chapter 6.3.4 --- Effect of Varying Movie Popularity Skewness --- p.64Chapter 6.3.5 --- Effect of Varying Replication Threshold --- p.64Chapter 6.3.6 --- Comparison of Different Target Node Selection Policies --- p.65Chapter 6.4 --- Overall Impact of Dynamic Replication --- p.66Chapter 7 --- Comparison with BSR-based Policy --- p.71Chapter 8 --- Conclusions --- p.75Chapter 8.1 --- Summary --- p.75Chapter 8.2 --- Future Research Directions --- p.76Bibliography --- p.7

Chatter--a conversational telephone agent

Thesis (M.S.)--Massachusetts Institute of Technology, Program in Media Arts & Sciences, 1993.Includes bibliographical references (leaves 126-130).by Eric Thich Vi Ly.M.S

Speaking on the record

Thesis (Ph. D.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2005.Includes bibliographical references (p. 258-273).Reading and writing have become the predominant way of acquiring and expressing intellect in Western culture. Somewhere along the way, the ability to write has become completely identified with intellectual power, creating a graphocentric myopia concerning the very nature and transfer of knowledge. One of the effects of graphocentrism is a conflation of concepts proper to knowledge in general with concepts specific to written expression. The words 'literate' and 'literacy' themselves are a simple case: their connotations sometimes focus on the process of reading text and sometimes on the kinds of knowledge that happen to be associated in our culture with people who read many books. This thesis has a conceptual and an empirical component. On the conceptual side a central task is to disengage certain concepts that have become conflated by defining new terms. Our vocabulary is insufficient to describe alternatives that serve some or all of the functions of writing and reading in a different modality. As a first step, I introduce a new word to provide a counterpart to writing in a spoken modality: speak + write = sprite. Spriting in its general form is the activity of speaking 'on the record' that yields a technologically-supported representation of oral speech with essential properties of writing such as permanence of record, possibilities of editing, indexing, and scanning, but without the difficult transition to a deeply different form of representation such as writing itself. This thesis considers a particular (still primitive compared with might come in the future) version of spriting in the form of two technology-supported representations of speech: (1) the speech ·in audible form, and (2) the speech in visible form.(cont.) The product of spriting is a kind of 'spoken' document, or talkument. As one reads a text, one may likewise aude a talkument. In contrast, I use the word writing for the manual activity of making marks, while text refers to the marks made. Making these distinctions is a small step towards envisioning a deep change in the world that might go beyond graphocentrism and come to appreciate spriting as the first step--but just the first--towards developing ways of manipulating spoken language, exemplified by turning it into a permanent record, permitting editing, indexing, searching and more. The empirical side of the thesis is confined to exploring implications of spriting in educational settings. I study one group of urban adults who are at elementary levels of reading and writing, and two groups of urban elementary school children who are of different ages, cultures and socioeconomic status, and who have appropriated writing as a tool for thought and expression to greater or lesser extents. One effect of graphocentrism in our culture is the very limited and constrained developmental path of literacy and learning. This has not always been the case. And it does not need to be so in the future. This thesis discusses some small ways in which we might re-value modes of expression in education closer to oral language than to writing. This thesis recognizes three ways in which spriting is relevant to education: (1) spriting can serve as a stepping stone to writing skills, (2) it can in some circumstances serve as a substitute for writing, and (3) it provides a window onto cognitive processes that are present but less apparent in the context of producing text.Tara Michelle Rosenberger Shankar.Ph.D