How can observation of a legacy system be used for design? To answer this question, we observed a teacher doing live coding with a conventional code editor and used the observations to design an editor better suited to this style of teaching. In particular, we found strong evidence that a projectional editor would better meet this need. Reflecting on this experience, we describe two types of requirements which can be inferred from observing a user using a legacy system: hidden requirements, in which users use existing features in unexpected ways, and novel requirements inferred from pain points observed in current system use. / Thesis / Master of Applied Science (MASc)

This study determined attitudes held by metropolitan city editors in Texas toward current journalism instruction in colleges and universities. An open-ended questionnaire was mailed to city editors of newspapers in Texas with circulation over 50,000.

Collaborative editing systems (or group editors) allow a geographically dispersed group of human users to view and modify shared multimedia documents, such as research papers, design diagrams, web pages and source code together over a computer network. In addition to being useful tools, group editors are a classic research vehicle and model of interactive groupware applications, based on which a variety of social and technical issues have been investigated. Consistency maintenance as a fundamental problem in group editors has attracted constant research attention. Operational transformation (OT) is an optimistic consistency maintenance method that supports unconstrained collaboration among human users. Although significant progress has been achieved over the past decade, there is still a large space for improvement on the theoretical part of OT. In this dissertation, we are concerned with three problems: (1) How to evaluate the correctness of OT-based consistency maintenance protocols; (2) How to design and prove correct OT-based protocols; (3) What are the consistency correctness conditions for group editing systems in general. This dissertation addresses the above three problems and makes the following contributions: (1) propose a total order based framework including a new consistency model and the associated design methodology. This framework reduces the complexities of the OT design; (2) improve the total order based framework by introducing a natural order based framework. In contrast, this framework removes the requirement of defining a total order that is not necessary to the OT design; (3) establish a generic consistency model and propose the first set of practical design guidelines in OT based on this model.

The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on December 31, 2009). Thesis advisor: Dr. Clyde H. Bentley. Includes bibliographical references.

No description available.

Project report (M.S.)--Virginia Polytechnic Institute and State University, 1990. / Vita. Abstract. Includes bibliographical references (leaves 74-76). Also available via the Internet.

Project report (M.C.S.)--Virginia Polytechnic Institute and State University, 1991. / Abstract. Also available via the Internet.

Thesis (doctoral)--Universität Freiburg in der Schweiz.

Thesis (doctoral)--Universität Erlangen, 1912. / Includes bibliographical references (p. [3]-4).

Issued also as Thesis (Ph. D.)--Columbia University. / "A chronological list of Theobald's works": p. [347]-355. Addenda slip inserted.