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 70 for “"false alarm rate"”.
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Effect of false alarm rate on pilot use and trust of automation under conditions of simulated high risk
… investigate the relationships between automation false alarm rate, human trust in automation, and human use of automation, specifically under conditions of simulated high risk. The experiment involved military pilots flying combat and non-combat missions while employing a missile warning sensor …
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Development and trialling of a low-power wearable fall detector
… to a neck lanyard. Each generation incorporates multiple power-conserving technologies to achieve a long battery life, whilst remaining high fall detection accuracy. The prototypes devices were evaluated systematically using the data collected in several laboratory-based and free-living …
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A Stochastic Approach to Modeling Aviation Security Problems Using the KNAPSACK Problem
… control security systems are challenged by the false alarm, false clear tradeoff. Given a particular access control security system, and a prespecified false clear standard, there is an optimal (minimal) false alarm rate that can be achieved. The objective of this research is to develop methods …
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Real-time Adaptive Sensor Attack Detection and Recovery in Autonomous Cyber-physical Systems
… clear vision of the timing and usability (or the false alarm rate) of attack detection still remains elusive. Existing works tend to pursue an unachievable goal of minimizing the detection delay and false alarm rate at the same time, while there is a clear trade-off between the two metrics. …
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Hilbert phase methods for glottal activity detection
… analytic DEGG signal provide accurate candidate locations of glottal closure instances (GCIs). Pruning these GCI candidates with an automatically determined amplitude threshold, found by iteratively removing from the full signal the inlier samples within a fraction of its standard …
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Classification of vocal fold vibration as regular or irregular in normal, voiced speech
… of 292 of 320 irregular tokens (recognition rate of 91.25% with a false alarm rate of 4.98%), and 4105 of 4320 regular tokens (recognition rate of 95.02% with a false alarm rate of 8.75%) are correctly identified.
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The sensitivity of aircraft emergency locator transmitters to non-distress impact events
… use today, were found to have crash activation rates of only twenty-five percent (25%). This means that three out of every four crashes are not detected by these devices. Newer emergency locator transmitters were found to have crash activation rates of seventy-three percent (73%) to eighty-two …
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Data-efficient quickest change detection
… possible delay, subject to a constraint on the false alarm rate. In many applications of quickest change detection, changes are rare and there is a cost associated with taking observations or acquiring data. For such applications, the classical quickest change detection model is no longer …
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Often Wrong but Never in Doubt: Categorized Lists Produce Confident False Memories
… procedure, further develop an explanation of why false recognition of category members occurs in this procedure, and modulate false recognition of category members by manipulating encoding and retrieval phases. Experiment 1 extended previous categorized list research, showing that subjects are …
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The Effects of Alarm System Errors on Dependence: Moderated Mediation of Trust With and Without Risk
… on sensor-based signaling systems suggests that false alarms and misses affect operator dependence via two independent psychological processes, hypothesized as two types of trust. These two types of trust manifest in two categorically different behaviors: compliance and reliance. The current …
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Target Detection Using a Wavelet-Based Fractal Scheme
… proposed techniques feature map provides a lower false alarm rate than the previously developed method.</p>
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Embedded monitors for detecting and preventing intrusions in cryptographic and application protocols.
… deviations. However, it has a drawback of a high false alarm rate. In this thesis, we describe our anomaly-based IDS designed for detecting intrusions in cryptographic and application-level protocols. Our system has several unique characteristics, such as the ability to monitor cryptographic …
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Low-level curvature shear and supercell thunderstorm behavior
… pose threats to lives and property, and accurately issuing warnings of their occurrence represents a challenge to operational meteorologists. One tool that will become increasingly important in responding to this challenge is Doppler radar which is used to detect rotation over several …
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Noise reduction schemes for digital hearing aids and their use for the hearing impaired
… algorithm is proposed which maintains a low false-alarm rate over a wide range of signal-to-noise ratios. This facilitates its application for noise estimation in noise reduction algorithms. Comprehensive evaluations of the Ephraim-Malah noise reduction algorithms with hearing-impaired …
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Role of Mouse Visual Cortex in Perception of Stimulus Features
… detection threshold and consistently increases false alarm rate in both contrast and speed increment detection tasks. The effects of PM suppression on false alarm rate remain intact even when the visual stimuli are presented outside of the affected visual field, suggesting a non-visual specific …
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Accuracy of Performance Measurement: An Investigation of Training Method and Amount of Practice
… conditions. Each participant viewed and rated 7 videotaped interview simulations. The results for performance ratings indicated that (a) frame-of-reference training produced the most accurate ratings for elevation, differential elevation, and differential accuracy, and (b) …
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X control charts in the presence of correlation
… If they are positively correlated, then the false alarm rate decreases as the correlation between consecutive observations increases. On the other hand, the detection time increases as the correlation increases. In VSI control charts with traditional control limits, if the process mean is on …
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Ultrawideband Indoor Location And Tracking System
The objective of this thesis is to demonstrate an indoor intruder location and tracking system with UltraWideBand (UWB) technology and use data compression and Constant False Alarm Rate (CFAR) techniques to improve the performance of the location system. Reliable and accurate indoor positioning …
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SIRIO : Integrated Forest Firesmonitoring, detection and decision supportsystem with low cost commercial sensorssuited for complex orography
… different sensors to reduce or eliminate the false alarm rate. Concerning the image geo-referencing tool, the present work describes an innovative projective geo-referencing algorithm able to geo-reference complex orography regions using fixed ground station images. Besides, it does not need …
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A non-coherent ultra-wideband receiver : algorithms and digital implementation
… of 0 dB, the receiver achieves a detection miss rate of 2.1% and a false alarm rate of 1.2%. The synchronization error (within ±2 chip periods) rate is 0.5%. The bit error rate is 8.6%, but it drops sharply to 0.1% at an SNR of 5 dB. Moreover, the detection and the synchronization processes take …
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