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 97 for “"Search task"”.
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Measuring Memory in an Alzheimer's Treatment Trial Using a Visual Search Task
… through the use of selective hippocampal tasks. I used a nonverbal hippocampal-dependent target-in-scene detection task to determine if task performance shows age-related decline and/or AD-related impairments. Participants located objects (‘targets’) that appeared/disappeared in flickering …
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Measuring Team Collaboration and Effects of Target Guidance in a Visual Search Task
<p>Many professional tasks, including military operations and medical operations, involve a team of operators searching for a target on a common visual display. Previous works on collaborative visual search employed analysis of mean response time (RT) and error rates, which may not offer direct …
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Eye Tracking as a Control Interface for Tele-Operation During a Visual Search Task
… method during tele-operation in a simulated task environment. Operators used a simulator to tele-operate a search robot using three different control methods: fully manual, hybrid, and eye-only. Using Endsely’s (1995a) three level SA model and a natural interface (e.g., eye-tracking) as a …
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The Effects of Task Criticality and Target Modality on a Simulated Battlefield Search Task
… instruction manuals when asked to perform tasks in critical environments. These instruction manuals are predominantly written in text and rarely include images. Several theoretical frameworks, including the Pictorial Superiority Effect, posit images to be more effective forms of instruction …
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Contextual Effects in Tax Research: An Experimental Investigation of Adaptivity and Expert Performance in an Information Search Task
… particular ways will conduct broader information search in planning than in compliance. I also predict that the nature of the decision is different in each context, resulting in the use of forward reasoning in the compliance context and backward reasoning in the planning context. Finally, I …
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Age Differences in the Effects of Stimulus Complexity and Redundancy on Pattern Discrimination in a Visual Search Task
Made available in DSpace on 2014-12-08T23:01:29Z (GMT). No. of bitstreams: 1 6612327.pdf: 2086905 bytes, checksum: f203a2df1e6bd1bb11bf51c1a5278d6d (MD5) Previous issue date: 1966
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Re-examining and re-conceptualising enterprise search and discovery capability: towards a model for the factors and generative mechanisms for search task outcomes.
… that finding information in the workplace using search engine technology has remained difficult, with socio-technical elements largely neglected in the literature. Explication of the factors and generative mechanisms (ultimate causes) to effective search task outcomes (user satisfaction, search …
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Hopscotch: Robust Multi-agent Search
The task of searching a space is critical to a wide range of diverse applications such as land mine clearing and planetary exploration. Because applications frequently require searching remote or hazardous locations, and because the task is easily divisible, it is natural to consider the use of …
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Emotional and Cognitive Influences on Visual Search
… state affects one's ability to perform cognitive tasks has long captivated scientists. In the work described in this thesis, a visual search task was employed as a proxy for cognition while images of emotional facial expression served to influence emotional experience. Previous models of the …
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The Effect of C-Section Birth on Attention Task Performance and Cortical Grey Matter Integrity
… in reduced performance on visual attention tasks, as well as altered intrinsic functional neural networks, for both infants and adults born via C-section. The present study tested C-section and vaginally born adults on six tasks: a visual search task, the Attention Network Task, the …
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The effects of five discrete variables on human performance in a telephone information system
… and the database structure (8x2 or 2x6). The research methodology implemented a one-half fraction of a 2⁵ factorial design, requiring only 16 of the 32 possible treatment combinations. Two tasks were included in this study: a search task and a transcription task. The search task consisted of …
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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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The Effect of Directional Auditory Cues on Driver Performance in a Simulated Truck Cab Environment
… prompted to select highway numbers on a side-task display. Prompts were presented visually or aurally. Auditory prompts were presented either diotically (both ears simultaneously) or directionally (to either the left or right ear). The search task varied in map density and timing of the …
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An Analysis of Remote Communication Processes Involved in Video- Mediated and Text-Based Computer-Mediated Communication During Collaborative Problem Solving
… on the process of collaborative problem solving tasks in today's modern society. Seven male-only dyads were asked to complete two tasks, both with a finite and definable solution, by communicating through one of three possible ways: face-to- face (FTF), a synchronous text-based computer system …
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Learning to reformulate long queries
Long search queries are useful because they let the users specify their search criteria in more detail. However, the user often receives poor results in response to the long queries from today's Information Retrieval systems. For the document to be returned as a relevant result, the system requires …
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Toward higher effectiveness for recall-oriented information retrieval: A patent retrieval case study
Research in information retrieval (IR) has largely been directed towards tasks requiring high precision. Recently, other IR applications which can be described as recall-oriented IR tasks have received increased attention in the IR research domain. Prominent among these IR applications are patent …
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Monitoring eye movements to uncover the role of visual context in the access to verb-complement information during sentence comprehension
… the candle "). Moreover, we conducted an object search task to monitor the time subjects took to look at the target object (e.g. " candle ") when presented in isolation, using the same three probe points (onset of the noun, offset of the noun, and offset+200 ms). From these latter measurements, …
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Implicit Learning of Spatial Context in Adolescents and Adults with Autism Spectrum Disorder
… spatial context was investigated using a visual search task, known as contextual cueing (Chun & Jiang, 1998). Contextual cueing refers to faster target detection in a visual search task with repeated exposure to a visual configuration (context), compared to configurations presented only once. …
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