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The World Wide Web provides the capability of delivering multi-media presentations to a wide audience. This thesis details the design and development of the site Psychoacoustical demonstrations and experiments at McGill University: it discusses site organization, selection of materials and development methods. In order to evaluate the utility of the site, site usage data, feedback from readers and data from experiments are analyzed and discussed. The thesis examines the success of the site in attracting a wide audience and holding its attention, as course material, in gathering data from psychoacoustical experiments, and in obtaining feedback from readers. Suggestions for future sites of this type are included. / The test of the thesis should be read in conjunction with experiencing the World Wide Web site at http://www.music.mcgill.ca/auditory/Auditory.html.

This thesis has mainly focused on investigating the effect of communication network on the power system operation. The main objective of this research has been to develop a set of communication network simulation tools and verify their suitability for realistic cosimulation of a power system and an associated data-communication network within a power system simulation environment. Based on a background study, a set of communication components have been developed for the PSCAD/EMTDC power system simulation software, which can simulate communication delay and packet losses. Furthermore, an analytical method based on queuing theory has also been developed to evaluate the communication delay and packet loss probability of a typical PMU-PDC communication network. Finally, the communication components developed in this thesis have been integrated into the simulation of a wide area power system application to investigate the effect of communication network parameters on the power system operation.

Studies of mid-ocean ridges have provided evidence of magma chambers beneath both fast and intermediate spreading ridges. However no such features have been observed to date beneath slow spreading ridges. These contradictory observations are in direct conflict with seismic studies which reveal that the resulting crustal structures are similar and hence crustal structure is independent of the spreading rate. These latter observations in turn lead to the implication that the accretionary processes operating at all ridge types must also be similar. The aim of this study is to attempt to resolve between this discrepancy in geophysical observations of magma chambers at fast, intermediate and slow spreading ridges and investigate the nature of accretionary processes operating such that the same crustal structure is achieved. Therefore an apparently currently magmatically active section of the slow spreading Mid-Atlantic Ridge at 57 45'N on the Reykjanes Ridge, was selected as the target of a multidisciplinary geophysical experiment to be conducted aboard the RRS Charles Darwin in 1993. Wide-angle seismic data recorded using 10 digital ocean bottom seismometers were used to generate models of the crustal structure along and across-axis. These models were confirmed and further constrained by modelling of normal incidence seismic and gravity data and by comparison with the results of modelling controlled source electromagnetic data. The resultant models indicate that a magma chamber exists beneath the axial volcanic ridge studied, providing the first geophysical observation of such a feature at any slow spreading ridge. This magma chamber is similar in dimensions to those observed beneath fast and intermediate spreading ridges and consists of a thin, narrow sill-like body which appears to be continuous along-axis, and which is underlain by a region of partial melt extending almost to the Moho. This latter feature also appears to be both longer-lived and more extensive than the magma chamber. The 2.5 km depth to the top of the magma chamber is only slightly greater than that observed at fast spreading ridges, which indicates that magma chamber depth does not vary significantly with spreading rate. However, there ore insufficient data available to fully constrain and develop this relationship to its fullest. Therefore the results of this study indicate that the processes of crustal accretion occurring at all spreading ridges are similar, with the lack of observations of magma chambers being due to the fact that the periods of magmatic activity at slow spreading ridges are considerably more widely separated in both space and time than for fast and intermediate spreading ridges. The main difference however, appears to occur in the process of emplacement of layer 2A, which is observed to thicken off-axis at fast spreading ridges due to the less viscous lavas produced at these ridges being able to flow further off-axis. The results of this study, and of two other studies at slow spreading ridges, show that layer 2A is completely formed on-axis and thins off-axis due to extensional faulting. The remainder of the crust is completely emplaced, and the Moho formed, on-axis at all spreading rates.

End-users tend to lose their way in the maze of information within hypertext. Much work done to address the "lost in hyperspace" problem is reactive, that is, doing remedial work to correct the deficiencies within hypertexts because they are (or were) poorly designed and built. What if solutions are sought to avoid the problem? What if we do things well from the start? This thesis reviews the "lost in hyperspace" problem, and suggests a framework to understand the design and usability issues. These issues cannot be seen as purely psychological or purely computing, they are multi-disciplinary. The proactive, multi-disciplinary approach undertaken in this thesis is drawn from current technologies in sub-disciplines of hypertext, human-computer interaction, cognitive psychology and software engineering, and they include investigations into: " good design principles and guidelines for the building of hypertexts in the first place; " task analysis and user modelling techniques for end-users' tasks to be carefully defined; " effective hypertext structures to ensure usability of hypertexts; and " designer tools to create hypertexts with a reduced tendency for the "lost in hyperspace" problem to arise. To demonstrate these ideas, this thesis presents HyperAT, a hypertext research authoring tool, developed to help designers build usable web documents on the World Wide Web. The World Wide Web is chosen as a hypertext example since it is the most widely used and largest hypertext system ever. The approach taken in HyperAT is novel: multi-disciplinary approaches are integrated and implemented with a practical authoring tool. Evaluation of HyperAT indicates that it does address the "lost in hyperspace" problem, particularly for the World Wide Web by: (i) helping designers manage the complexity of the design and validation processes; and (ii) helping hypertext end-users navigate hypertexts produced by HyperAT without getting "lost".

This paper concentrates on the Worldwide Web (WWW) as a medium and also looks into Internet advertising which has various forms of delivering messages on the Web. From an examination of a review of the literature on the Web medium, three topics are discussed. The original and beneficial work presented by Hoffman and Novak (1996) that drew a model WWW communication compared with traditional communication. Next, Sepstrup's criteria (1991 cited in Thomsen, 1996) are used to contrast and compare traditional media and the Web medium. The differences are manifestly pointed out in terms of reach, selectivity, feedback, information capacity and costs. Measuring the effectiveness of media is one important topic of the Web medium that researchers take into consideration nowadays. Measures of the Web medium are clarified in two different approaches which are adopted from traditional media: communication effectiveness and sales effectiveness. / In relation to Internet advertising, there are two more topics to be reviewed. First, various forms of Internet advertising are classified from the most popular to the least. The distinctive characteristic of each form is also revealed. Second, the benefits of Internet advertising to marketing communication are posited. The paper looks into the contribution of Internet advertising to marketing objectives that are communication-oriented and action-based. Upon examining the communication-oriented objective, four key benefits: awareness, attitude, trust and loyalty are revealed. Click-through and sales volume are key benefits of the action-based objective. / Thesis (DBA(DoctorateofBusinessAdministration))--University of South Australia, 2006

This thesis is devoted to a component model for Web application and the corresponding tools for its development. The model is described after the review of various existing Web application development methods and models. A case study is also provided to support the analysis. -- abstract / Thesis (PhD)--University of South Australia, 2003.

This paper concentrates on the Worldwide Web (WWW) as a medium and also looks into Internet advertising which has various forms of delivering messages on the Web. From an examination of a review of the literature on the Web medium, three topics are discussed. The original and beneficial work presented by Hoffman and Novak (1996) that drew a model WWW communication compared with traditional communication. Next, Sepstrup's criteria (1991 cited in Thomsen, 1996) are used to contrast and compare traditional media and the Web medium. The differences are manifestly pointed out in terms of reach, selectivity, feedback, information capacity and costs. Measuring the effectiveness of media is one important topic of the Web medium that researchers take into consideration nowadays. Measures of the Web medium are clarified in two different approaches which are adopted from traditional media: communication effectiveness and sales effectiveness. / In relation to Internet advertising, there are two more topics to be reviewed. First, various forms of Internet advertising are classified from the most popular to the least. The distinctive characteristic of each form is also revealed. Second, the benefits of Internet advertising to marketing communication are posited. The paper looks into the contribution of Internet advertising to marketing objectives that are communication-oriented and action-based. Upon examining the communication-oriented objective, four key benefits: awareness, attitude, trust and loyalty are revealed. Click-through and sales volume are key benefits of the action-based objective. / Thesis (DBA(DoctorateofBusinessAdministration))--University of South Australia, 2006

Zugl.: Diplomarbeit.

Zugl.: Köln, Fachhochsch., Master-Thesis, 2007.