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 51 for “"search tasks"”.
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The effects of antihistamine use on visual search tasks
Previous research has shown that most antihistamines have sedative effects and can lead to deterioration of psychomotor performance. The objective of this research was to determine if two antihistamines (diphenhydramine and astemizole) administered at a therapeutic dose level will affect a …
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Autonomous cooperation of heterogeneous platforms for sea-based search tasks
Many current methods of search using autonomous marine vehicles do not adapt to changes in mission objectives or the environment. A cellular-decomposition-based framework for cooperative, adaptive search is proposed that allows multiple search platforms to adapt to changes in both mission …
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The Effects of One Neurofeedback Session on Eye-Tracking Distractibility when Completing Verbal and Visuospatial Search Tasks
… functioning. Visual attention and visual search are important aspects of attention. Visual attention drives what and how the brain processes and interprets information from the environment. Visual search is the ability to find a visual target within a set of distractors. …
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Connections Between Infants' Object-Representation and Physical-Reasoning Systems: Priming Effects in Violation -of -Expectation and Manual-Search Tasks
Experiments described in this dissertation suggested that by highlighting a variable in infants' object-representation system, we may prime infants to attend to a variable in an event category; once included in the physical-reasoning system, the information about the variable will be interpreted by …
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Classifying complex topics using spatial-semantic document visualization: An evaluation of an interaction model to support open-ended search tasks
… we propose, test and develop a novel search interaction model to address two key problems associated with conducting an open-ended search task within a classical information retrieval system: (i) the need to reformulate the query within the context of a shifting conception of the …
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Exploring the impact of comments on the blog posts search
… we explore the use of comments in two blog posts search tasks. One task is topical relevance retrieval which aims to retrieve as many on-topic posts as possible; the other is opinion retrieval which targets not only topical relevant posts but also the ones that contain an opinion about the given …
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A DOMAIN-CENTRIC APPROACH TO DESIGNING USER INTERFACES OF VIDEO RETRIEVAL SYSTEMS
… efforts in video information retrieval (IR) research are needed because current experiments are showing few significant results. It is our belief that unsatisfactory results in video IR can be partially attributed to the overemphasis on technologically-driven approaches to interface development …
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Critisearch for Scholarly Search
Online search has empowered users with access to vast amounts of information. However, current online interfaces do not permit users to manipulate the hits on a search engine result page (SERP). This leads to the user adapting his/her own search style to suit the search engine instead of being the …
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Klink Search: Enabling Exploratory Browsing Activities in Digital Libraries
Complex search tasks within academic digital libraries go beyond simple lookup. They are open-ended, multi-faceted, with ill-defined information needs, requiring cognitive processing of the encountered information and learning. Academic digital library searchers often use exploratory search …
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An evaluation of methods of indicating active words in hypertext documents
… (12 males and 12 females) performed reading tasks and visual search tasks to evaluate each of the three Methods and six Cues. A hierarchical, within-subjects experimental design was used, employing a completely counterbalanced order of treatments. The study consisted of two experiments. For …
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Task-based user profiling for query refinement (toque)
The information needs of search engine users vary in complexity. Some simple needs can be satisfied by using a single query, while complicated ones require a series of queries spanning a period of time. A search task, consisting of a sequence of search queries serving the same information need, can …
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From information searching to learning: A comparison of contrasting hypertextual menu designs for computer-based instructional documents
… However, studies comparing information searching in linearly and non-linearly organized texts cannot provide useful guidelines for implementing computer-based instructional documents if search tasks and menu designs are not clearly classified and described. This study examined the …
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An analysis of EEG signals present during target search
Recent proof-of-concept research has appeared highlighting the applicability of using Brain Computer Interface (BCI) technology to utilise a subjects visual system to classify images. This technique involves classifying a users EEG (Electroencephalography) signals as they view images presented on a …
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The voting model for people search
… as candidate profiles. The statement of this research work is that the expert search task in an enterprise setting can be successfully and effectively modelled using a voting paradigm. In the so-called Voting Model, when a document is retrieved for a query, this document represents a vote for …
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Perceptual deadtime: Is there processing latency in the perceptual system
… is a perceptual phenomenon observed in visual search tasks in which target stimuli may be delayed up to 50 milliseconds with no apparent effect on the determination of target identity as measured by choice reaction times. Several experiments evaluated the hypothesis that the processing of …
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Exploring the impact of conversational strategies on user search experience in goal-oriented tasks in a voice-only domain
Conversational search has recently become established as a new information search paradigm. Increasing numbers of people are using smart speakers and virtual personal assistants to access information online. Given the substantial increase in the usage of devices that feature conversational agents, …
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Further evidence and understanding for the contrast signal theory of parallel processing in visual search
… has been lacking. Specifically, in the visual search literature, major models of the search process have established a convention that parallel processing during visual search does not have meaningful time cost variations. Recent results have demonstrated that, to the contrary, parallel …
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The affective and cognitive context of self-reported measures of subjective well-being
Researchers attempting to understand the experience of subjective well-being have relied heavily on self-report measurement methodology. Recent research focused on such methodology has demonstrated that a number of factors, such as the current mood of the respondent and the cognitive and social …
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Optimal element size-shape-spacing combinations for a 5 X 7 dot matrix visual display under high and low ambient illuminance
… for a 5 X 7 dot matrix visual display. Three tasks - a reading test, a random search task, and a structured (menu) search task - were used to enhance the utility of the research. All tasks were displayed on a CRT display 1.02 m from the subject. There were different overall results for the …
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