This thesis examines the quality and effectiveness of online political deliberation, within the framework of Jurgen Habermas’ public sphere and discourse theories. The thesis analyzes a deliberative process that took place online, in June 2011, as part of the Liberal Party of Canada’s Extraordinary Convention, specifically through content and discourse analysis of data from online discussion platforms. The analysis sought to ascertain whether the objectives of the convention were met, measured the quality of discourse and identified insights to support the creation of more effective spaces for political deliberation online. Analysis of the results revealed a difference in the discourse quality for each platform, attributed to the synchronicity or asynchronicity of the platform. The thesis concludes with suggestions for a design that makes use of both the synchronous and asynchronous features of the online discussion platforms in order to more specifically target the objectives of the political process.

This thesis reports the findings of an exploratory, ethnographic study of the spiritual journal keeping practices of Catholic university students at the 'Harbour House,' a Catholic student centre and parish operating on the campus of a large, Canadian university. Guided by the question,'How and why do Catholic students keep journals to document their spiritual lives?' it examines journal keeping in the context of Catholic spirituality, the relationships students have with their journals as spiritual documents, and the representations of information found in spiritual journals. Findings are organized under the themes of Content, Materials, Practice, and Structure, and demonstrate that spiritual journal keeping is a deeply personal activity that involves a variety of unique and individualized information practices and behaviours, developed and used in order to better navigate a vast and mysterious spiritual path, and to work towards spiritual growth.

This thesis reports the findings of an exploratory, ethnographic study of the spiritual journal keeping practices of Catholic university students at the 'Harbour House,' a Catholic student centre and parish operating on the campus of a large, Canadian university. Guided by the question,'How and why do Catholic students keep journals to document their spiritual lives?' it examines journal keeping in the context of Catholic spirituality, the relationships students have with their journals as spiritual documents, and the representations of information found in spiritual journals. Findings are organized under the themes of Content, Materials, Practice, and Structure, and demonstrate that spiritual journal keeping is a deeply personal activity that involves a variety of unique and individualized information practices and behaviours, developed and used in order to better navigate a vast and mysterious spiritual path, and to work towards spiritual growth.

While knowledge-intensive business services (KIBS) play an important role in industrialized economies, little research has focused on how best to support their design. The emerging understanding of service as a process of value cocreation – or collaborative value creation – can provide the foundations for this purpose; however, this body of literature lacks empirically grounded explanations of how value is actually cocreated and does not provide adequate design support for the specific context of KIBS. This research thus first identifies generative mechanisms of value cocreation in KIBS engagements; it then develops a design framework from this understanding; finally, it elaborates a modeling technique fulfilling the requirements derived from this design framework. A multiple-case study of two academic research and development service engagements, as a particular type of KIBS engagement, was first undertaken to identify generative mechanisms of value cocreation. Data was gathered through interviews, observation, and documentation, and was analyzed both inductively and deductively according to key concepts of value cocreation proposed in literature. Data from a third case study was then used to evaluate the ability of the modeling technique to support the analysis of value cocreation processes in KIBS engagements. Empirical findings identify two contextual factors; one core mechanism; six direct mechanisms; four supporting mechanisms; and two overall processes of value cocreation, aligning and integrating. These findings emphasize the strategic nature of value cocreation in KIBS engagements. Results include an empirically grounded design framework that identifies points of intervention to foster value cocreation in KIBS engagements, and from which modeling requirements are derived. To fulfill these requirements, a modeling technique Value Cocreation Modeling 2 (VCM2) was created by adapting and combining concepts from several existing modeling approaches developed for strategic actors modeling, value network modeling, and business intelligence modeling.

The growing sophistication of version control systems, a class of tools employed in tracking and managing changes to documents, has had a transformative impact on the practice of programming. In recent years great strides have been made to improve these systems, but certain stubborn difficulties remain. For example, merging of concurrently introduced changes continues to be a labour-intensive and error-prone process. This thesis examines these difficulties by way of a critique of the conceptual framework underlying modern version control systems, arguing that many of their shortcomings are related to certain long-standing, open problems around identity. The research presented here casts light on how the challenges faced by users and designers of version control systems can be understood in those terms, ultimately arguing that future progress may benefit from a better understanding of the role of identity, representation, reference, and meaning in these systems and in computing in general.

This dissertation conducts a phenomenological analysis of Massively Multiplayer Online Games (MMOGs) – networked computer applications that thousands of people play simultaneously using avatars to interact with one another and with computer-controlled entities within a game-world typically rendered in 3D. Part 1 argues that existing studies of MMOGs often utilize concepts that, while presumed to be well understood, are often problematic in ways that conflict with the actual claims of the studies in which they play a central role. Three issues in particular are highlighted. It is argued, first, that common conceptions of virtual should not influence understanding of MMOGs; second, that there are prima facie problems with how existing studies frame the subject of avatars; and, third, that there are substantive problems with accounts of avatars that involve notions of representation or embodiment. Part 2 develops an interpretation of MMOGs that both extends understanding of these games, and reflexively unsettles the traditional phenomenological perspective that orients this interpretation itself. The analysis begins by arguing that MMOGs are worlds – understood as places of meaningful, fallen, thrown, collective conduct – and introduces the idea of conjuncture to account for how Dasein and avatars function together at an existential-ontological level. In so doing, the dissertation puts pressure on the fundamental-ontological distinction between Dasein and entities other than Dasein, the idea that Dasein alone discloses world, and the notion that whatever Dasein uses in its environment only obtains a place because of the de-severing and directionality of Dasein. By interpreting the virtuality of MMOGs as the creative repetition of ontological structures of existence, the dissertation provides insight into the phenomena of virtual death and time. This in turn draws into question the idea that quantifying time blocks access to original human temporality, and that the transcendence of Dasein uniquely involves self-overcoming.

Increasingly, workplace information seeking takes place in digital information environments and is reliant upon search systems. Existing systems are designed to retrieve information that is relevant to the query, but are not capable of identifying information that is well-suited to the context and situation of a search. This is a problem for professionals who often are searching for a small amount of useful information that can be applied to a problem or task, and have limited time to browse through large sets of results. This inability of search systems to discriminate between relevant and useful documents is one of the core problems in information retrieval. In this dissertation, I address this problem by studying the role that contextual factors play in determining how a group of professionals searches for and selects information. The central question concerns the nature of the relationships between these contextual factors, specifically between the genres in the document collection and the tasks of the searcher, with an aim to exploit such relationships to improve workplace information retrieval. Research was conducted through multiple studies in three phases, moving from an exploratory study of workplace information behaviour to a controlled experimental user study. Findings confirm that workplace context shapes search behaviour. This relationship is modeled as a set of key contextual factors and sets of context-dependent access constraints, preferred document characteristics, and search strategies. Among the contextual factors identified, work tasks and information tasks were found to be significantly associated with document genres. This task-genre relationship was modeled as a matrix of associations between domain-specific task and genre taxonomies and successfully implemented as a filtering component in a workplace search system. This is the first major study of the relationship between task and genre in information seeking and of its application to information retrieval systems.

This dissertation conducts a phenomenological analysis of Massively Multiplayer Online Games (MMOGs) – networked computer applications that thousands of people play simultaneously using avatars to interact with one another and with computer-controlled entities within a game-world typically rendered in 3D. Part 1 argues that existing studies of MMOGs often utilize concepts that, while presumed to be well understood, are often problematic in ways that conflict with the actual claims of the studies in which they play a central role. Three issues in particular are highlighted. It is argued, first, that common conceptions of virtual should not influence understanding of MMOGs; second, that there are prima facie problems with how existing studies frame the subject of avatars; and, third, that there are substantive problems with accounts of avatars that involve notions of representation or embodiment. Part 2 develops an interpretation of MMOGs that both extends understanding of these games, and reflexively unsettles the traditional phenomenological perspective that orients this interpretation itself. The analysis begins by arguing that MMOGs are worlds – understood as places of meaningful, fallen, thrown, collective conduct – and introduces the idea of conjuncture to account for how Dasein and avatars function together at an existential-ontological level. In so doing, the dissertation puts pressure on the fundamental-ontological distinction between Dasein and entities other than Dasein, the idea that Dasein alone discloses world, and the notion that whatever Dasein uses in its environment only obtains a place because of the de-severing and directionality of Dasein. By interpreting the virtuality of MMOGs as the creative repetition of ontological structures of existence, the dissertation provides insight into the phenomena of virtual death and time. This in turn draws into question the idea that quantifying time blocks access to original human temporality, and that the transcendence of Dasein uniquely involves self-overcoming.

Master of Science / Department of Computing and Information Sciences / John M. Hatcliff / Developing a wireless sensor network application includes a variety of tasks, such as coding of the implementation, designing the architecture and assessing availability of hardware components, that provide necessary capabilities. Before compiling an application, the developer has to configure the selection of hardware components and set up required parameters. One has to choose from among a variety of configurations regarding communication parameters, such as frequency, channel, subnet identifier, transmission power, etc.. This configuration step also includes setting up parameters for the selection of hardware components, such as a specific hardware platform, which sensor boards and programmer boards to be used or the use of optional services and more. Reasoning about a proper selection of configuration parameters is often very difficult, since there are a lot of dependencies among these parameters which may rule out some other options. The developer has to know about all these constraints in order to pick a valid configuration. Unfortunately, the existing makefile approach that comes with nesC is poorly organized and does not capture important compatibility constraints. The configuration of a particular nesC application is distributed in multiple makefiles. Therefore a developer has to look at multiple files to make sure all necessary parameter are set up correctly for compiling a specific application. Furthermore without analyzing all makefiles it is unclear what the total configurability of a nesC application is and what options and parameters are provided (e.g. is there a parameter for enabling secure communication). In addition to this, the makefile approach tends to be error-prone, since the developer has to type in variable names and values manually, that match the existing implementation. However, the existing configuration system does not capture important compatibility constraints, such as capabilities of selected hardware components. This thesis proposes the use of feature models to configure nesC-based sensor network applications. We provide a tool-supported framework to model valid configurations and a generator that translates this model into a makefile compatible with existing nesC infrastructure. The framework automatically rules out selection of incompatible features using a build-in constraint language. Since all variables are defined in the model, misspellings of variable names are reduced and their domains are clearly defined because most variables come with all its possible options. A developer just needs to choose one or more of them by enabling certain features, where the problem of cardinality is also handled by the model. We show a detailed analysis of nesC's variability domain and how to use feature models to cover the exact behavior of nesC's makefile approach. In a following chapter we simplify our feature model and include the selection of specific hardware components, its capabilities and its dependencies. The feature model and the makefile generator offer a convenient way to configure nesC applications, that is faster, easier to understand and to handle, more transparent and once implemented it gives the possibility to adopt this configuration tool to an existing development environment.

Master of Science / Department of Computing and Information Sciences / Alley Stoughton / Forlan is a computer toolset for experimenting with formal languages. Forlan is implemented as a set of Standard ML (a functional programming language) modules. Forlan presently includes a tool named ‘JFA’ (Java Finite Automata Editor) which is a Java GUI tool for creating and editing ‘Finite Automata’ and a tool named ’JTR’ (Java Trees Graphical Editor) which is used for creating and editing ‘Parse Trees’ or ’Regular Expression Trees’. The JForlan tool is an attempt to unify the ‘JFA’ and the ‘JTR’ tools into one single tool so as to make it more robust, efficient and easy to use. Apart from integrating the tools a lot more functionality like creating and editing ‘Regular Expression Finite Automata’ and ’Program Trees’ (special kinds of Forlan trees which are used to represent Programs in Forlan) has been added to the tool which were not present in the ‘JFA’ and the ‘JTR’ tools. As the ‘Automata’ and the ‘Trees’ are closely related concepts it is highly beneficial to combine the tools into one single tool. The JForlan tool can be invoked either from Forlan or can be run as a standalone Application. Due to the integration of the ‘JFA’ and the ‘JTR’ tools the user can now view the regular expression which was entered as a transition label in the ‘Automata’ mode as a tree structure in the ‘Tree’ mode. Another important feature which is added to the tool is that during the creation of the trees the user need not follow the top down approach only (i.e. creating first the root and then adding children to it) but can create the nodes of the tree in any order the user wishes. An important feature of the tool is that after drawing the necessary automaton or tree the user can save it directly as an ‘image’ or a JForlan project or can select the option of saving it in Forlan syntax, which translates the figures drawn into the Forlan code automatically. The main purpose of developing this tool is to provide a user friendly, easy to use tool which would be ideal for students as educational software which would help them to learn and understand the basic concepts of automata and tree structure.