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.
Results
Showing 1 to 20 of 83 for “"Alertness"”.
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Visual information processing in various degrees of alertness
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1983.
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Brain Dynamics When Alertness Fluctuates but Attentional Demands Persist
Alertness waxes and wanes throughout the day. Some tasks demand our unwavering attention, and when alertness dips, we still need to stay focused and engaged. This thesis examines how the human brain functionally reorganises when alertness levels decline but attentional demands persist. We focused …
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Fuzzy Analysis of Speech Metrics to Estimate Crew Alertness
A novel approach for estimating alertness levels from speech and tagging them with a reliability component has been developed. The Fatigue Quotient and Believability are both derived from the time series analysis of the speech signal in the communication between the operator and dispatch. Operator …
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Performance and alertness of railroad engineers on long duration trips
… present study investigated the performance and alertness of 8 healthy male participants between the age of 31 years and 65 years old in nighttime, long duration simulated train operation. Participants completed the simulator tasks twice, once alone (single run) and once with another person in …
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Effects of Screen Light Filtering Software on Sleep and Morning Alertness
… on sleep onset, sleep duration and subjective alertness after morning waking of four college students. The college students were randomized into two groups and had the wavelength filtering software f.lux installed on their computer. Participants in the intervention group had their computer set …
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Slipping into Sleep: neurodynamics of alertness transitions in humans and fruit flies
… this general state of readiness is called as ’alertness’. What happens to neurodynamics in the brain when alertness fades away as we fall asleep? How is behaviour affected? These questions will help us understand the organizing principles in the brain and functions of sleep itself. Here I use …
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An On-Road Investigation of Commercial Motor Vehicle Operators and Self-Rating of Alertness and Temporal Separation as Indicators of Driver Fatigue
… examined the use of self-rating of alertness and temporal separation (minimum time-to-collision, minimum headway, and mean headway) as indicators of driver fatigue. Without exception, the regression analyses for both the self-rating of alertness and temporal separation yielded models …
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Conflict and adaptation: Identifying the markers of cognitive control in the transition from wakefulness to sleep
… and not others. As such, fluctuations in alertness are hypothesised expected to produce a larger effect in those processes that are more reliant on consciousness. In chapter 2 we begin by investigating the effect of alertness on conflict monitoring. Conflict monitoring is the environmental …
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Effects of 8 and 12 hour non-rotating shift schedules for security and protective services workers
… system operation can have an impact on sleep, alertness, and the well-being of shift workers. The objective of this study is to evaluate security and protective services employees working in non-rotating shift systems of 8- hour and 12-hour schedules. New Jersey Institute of Technology’s Public …
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Ecological Examination of the Development of Color -Blind Racial Beliefs in Black College Students
… unique amount of variance in Cultural Pride and Alertness to Racism racial socialization received from both parents and peers. Additionally, Alertness to Racism racial socialization provided by peers accounted for a significant amount of variance in color-blind racial attitudes. Similarly, Peer …
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Ecological examination of the development of color-blind racial beliefs in black college students
… unique amount of variance in Cultural Pride and Alertness to Racism racial socialization received from both parents and peers. Additionally, Alertness to Racism racial socialization provided by peers accounted for a significant amount of variance in color-blind racial attitudes. Similarly, Peer …
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A comparison of three subsidiary tasks used as driver drowsiness countermeasures
… by which drivers can regain and maintain alertness. The current study was thus undertaken in an attempt to evaluate three subsidiary tasks which differed only in regard to input modality (auditory, tactual, or visual) in terms of: 1) the degree to which they aided the driver by maintaining …
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Interactions in the Mind: Examining Metacognition's Role in Entrepreneurial Performance
… between cognitive style and entrepreneurial alertness on performance at the opportunity identification and planning stages of the entrepreneurial journey. Prior research identifies these factors as components of an entrepreneurial mindset. However, the present research develops and examines …
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Subjective, behavioural and electrophysiological measurements of the time-course and intensity of sleep inertia after a full night of sleep /
… studies have described the period of impaired alertness and performance known as sleep inertia that occurs upon awakening from a full night of sleep. They report that sleep inertia dissipates in a saturating exponential manner, the exact time course being task dependent, but generally …
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An investigation of propranolol as an agent for the experimental manipulation of interoception.
… tasks, control tasks and measures of anxiety and alertness. All measures were obtained at the beginning and end of both sessions. Propranolol significantly decreased heart rate and systolic blood pressure. Heartbeat detection performance numerically decreased under propranolol, although this …
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Making connections: A qualitative study of science learning in five- and six-year-old children
… activities. The concept of ""intellectual alertness,"" originally articulated by Duckworth (1987), was further defined as a highly personal, multi-faceted set of qualities with both cognitive and affective dimensions. It is proposed that the intellectual alertness of each child consists of …
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Behavioral Logistics and Fatigue Management in Vehicle Routing and Scheduling Problems
… this work analyzes the effect of the starting alertness level on driver alertness for the remainder of the work week and examines a critical shortcoming in existing regulations.
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Predicting Changes in Individual Wellbeing Scores: Mixed Effects Models using Sleep Data from Wearables
… on self-reported morning wellbeing scores (alertness, happiness, energy, health, calmness); and second, evaluate both linear and nonlinear associations between different sleep metrics and wellbeing. To address high user variability found by the personalized nature of sleep and the subjective …
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