Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 62 for “"Direct manipulation"”.
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User modelling for evaluation of direct manipulation interfaces
… models of user action to usability evaluation of direct manipulation interfaces. In particular, the utility of a Model of Action for assisting novice evaluators in usability tests is investigated. An initial model of user action is proposed, based on the theory of action proposed by Norman (1986). …
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Direct Manipulation Techniques for Creation of Multiple-View Visualizations
… cumbersome for users. I draw on the concepts of direct manipulation, in which users interact with objects in the visual to enact desired changes, to develop new methods of creating MVs that are more intuitive to users and have less of a learning curve. With my proposed changes, users can …
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End-User Customization by Direct Manipulation of Tabular Data
… a new way for end users to extend software by direct manipulation without doing traditional programming. We augment existing user interfaces with a table view showing the structured data inside the application. When users edit the table, their changes are reflected in the original UI. This …
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Expressive query construction through direct manipulation of nested relational results
… requirements: (1) query specification through direct manipulation of results, (2) the ability to view and modify any part of the current query without departing from the direct manipulation interface, and (3) SQL-like expressiveness. By directly manipulating nested relational results, and using …
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A scalable direct manipulation engine for position-aware presentational data management
… of orders for large datasets and allow direct manipulation on orders. We introduce a sparse monotonic order statistic structure for persisting and maintaining order. We also show how to support multiple orders and optimize the storage. After that, we demonstrate a buffered storage …
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The effects of using icons and direct manipulation interfaces : an empirical study
… the performance impact of using icons and direct manipulation in human-computer interfaces. An icon based interface uses pictures or images to represent commands, objects, and system information. These images can be invoked, activated, moved by the user simply by pointing to the desired …
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Measuring trapped-ion motional decoherence through direct manipulation of motional coherent states
… Existing measurements of motional coherence indirectly control and measure the motional state by coupling the motional state to internal transitions driven by lasers, and as such, they may be prone to electronic state decoherence and laser amplitude or frequency fluctuations. In this thesis, we …
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A Comparison of Alphanumeric, Direct Manipulation Graphic, and Equivalent Interface Design for a Production Scheduling Task
… task. The study also compared alphanumeric, direct manipulation graphic, and equivalent interfaces to determine which interface best supports scheduling. The results of the study show that schedulers monitor the current system state and preview to future system states to test scheduling …
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Design and evaluation of CNC-user interfaces
… from CNC command languages to menu based and direct manipulation interfaces. However, there have been few efforts to evaluate CNC-user interfaces and to identify those interface features that have major effects on the usability of CNC machines. Thus, an objective assessment of the improvement …
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Enhancing the Performance of Eye and Head Mice: A Validated Assessment Method and an Investigation into the Performance of Eye and Head Based Assistive Technology Pointing Devices
… method suitable for assistive technology direct pointing devices, it then uses this method to add enhancement to these devices, finally it then demonstrates that such enhanced eye or head based pointing can approach that of basic hand mouse interaction and be a viable and usable …
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Embodying conversational characteristics in a graphical user interface
… SOPHIE might be re-implemented with a graphical direct manipulation interface instead of a natural language one, with the goal of improving its standard of usability. It begins by analysing the features that seem to have been central to SOPHIE's usability. These, it argues, were not so much an …
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Designing interactive visualizations by demonstration
Recent graphical interfaces offer direct manipulation mechanisms for authoring visualizations, but they are largely restricted to static output. To author interactive visualizations, users must instead turn to textual specification, but such approaches impose a higher technical burden than their …
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Insight : interactive machine learning for complex graphics selection
… want to manipulate, become more complex as well. Direct manipulation tools that artists and designers find accessible and useful for editing graphics such as logos and icons do not have the same applicability in these more complex cases. Given that selection is the first step for nearly all …
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Dynamic drawing : broadening practice and participation in procedural art
… to produce procedural compositions through direct manipulation. Dynamic Brushes is a system that enables artists to create computational drawing tools that procedurally augment the process of manual drawing. Para and Dynamic Brushes were informed through interviews with artists and evaluated …
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User interfaces supporting casual data-centric interactions on the Web
… and simple data sets, declarative syntaxes and direct manipulation techniques can be supported for tasks previously done only with programming in experts' tools. User studies indicated that tools built with such declarative syntaxes and direct manipulation techniques could be used by casual …
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Differences in performance and preference for object-oriented vs. bit-mapped graphics interfaces
… used a standardized evaluation to compare two direct manipulation graphics interfaces. The Interfaces investigated were (1) object-oriented (vector) graphics and (2) bit-mapped graphics (object-oriented graphics interfaces are not to be confused with object-oriented programming or …
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An evaluation of computer-supported backtracking in a hierarchical database
… within the complex hierarchy of entries. Most direct manipulation interface design guidelines suggest designers should include a feature for “undoing” user inputs (Smith and Mosier, 1986). In the case of a database, undo translates to backtracking support. The first purpose of this research was …
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User interface design and evaluation of a shipboard electronic warfare console
… literature, performance differences between direct-manipulation and command-key interfaces have not been validated. In this study, two interfaces were constructed to take advantage of direct manipulation and command-key interaction (DMI and CKI, respectively) styles while adding a …
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