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 174 for “"false alarm"”.
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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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Securing software : an evaluation of static source code analyzers
… of 57% and 87% respectively. However, average false alarm rates, as measured using the "PATCHED" programs, were high for these two systems. The frequency of false alarms per lines of code was high for both of these tools; Splint gave on average one false alarm per 50 lines of code, and …
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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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Development and trialling of a low-power wearable fall detector
… 93.0 % sensitivity and 87.3 % specificity, a false alarm rate of 0.023 false alarms/hour and a battery life of 664.9 days with a 3.7 V, 450 mAh battery. The second generation of fall detector was developed to overcome the limitations of Neon 1. Neon 2 with three variants of the fall detection …
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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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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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Food theft by deceptive alarm calls in the fork-tailed drongo
Why do animals make false alarms; are false alarms truly deceptive; and if, just as in Aesop's fable 'The boy who cried wolf' , animals can learn to ignore false alarms, why doesn't deception break down? I investigated these questions in a population of habituated and individually recognisable …
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Synchronization in Impulse Based Ultra Wideband Systems
… the synchronization problem using Probability of False Alarm is limited. The current thesis attempts to characterize the synchronization problem using Probability of False Alarm and Probability of Detection under various channel models and also discusses the importance of the length of the …
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Performance Analysis of Detection System Design Algorithms
… tradeoff between two errors that can occur. A False Alarm occurs if the detection system falsely indicates a target is present and a False Clear occurs if the detection system falsely fails to indicate a target is present. Given a particular detection system and a pre-specified false clear (or …
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Beamforming and scan pattern performance evaluation of rotating maritime multi-beam phased array surveillance radar
… detected with a detection probability of 1 and a false alarm probability of 0. This could be achieved with a single or dual-axis stacked beam. In a single axis stacked beam, only non-coherent integration of low quantity, low PRF pulse bursts could be used for the surface channel as time resources …
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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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Hilbert phase methods for glottal activity detection
… yields a 99.6% accurate detection system with a false alarm rate of 0.17%. This simpler algorithm, named Glottal Activity Detector For Laryngeal Input (GADFLI), outperforms the state-of-the-art SIGMA algorithm for GCI detection, which has a 94.2% detection rate, but a 5.46% false alarm rate. …
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Classification of vocal fold vibration as regular or irregular in normal, voiced speech
… 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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Identification of shift variation in bivariate process using pattern recognition technique
… of unnatural variation and/or lack in avoiding false alarm. In terms for unnatural variation, the classification of reciprocating patterns such as upward-downward and downward-upward shifts was less reported. In order to enhance its capability, this study aims at proposing an improved design of …
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The sensitivity of aircraft emergency locator transmitters to non-distress impact events
… were found to have an appalling and inexcusable false alarm rate. The false alarm rate of all emergency locator transmitters is greater than ninety-four percent (94%). Many explanations have been suggested for this high false alarm rate including hard landings and inadvertently activating the …
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Sparsity based methods for target localization in multi-sensor radar
… large sidelobes which may lead to an increased false alarm probability. The number of sensors of a MIMO random array required to maintain a certain level of peak sidelobes is studied. It is shown that the number of sensors scales with the logarithm of the array aperture, in contrast with a ULA …
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Distinguishing codes from noise : fundamental limits and applications to sparse communication
… of detection, which admits both miss and false alarm errors. Then we investigate the fundamental limits of code distinguishing in terms of the error exponents of miss and false alarm error probabilities. In a scenario that miss probability is required to vanish asymptotically but not …
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Automated detection of a crossing contact based on its Doppler shift
The trade-off between false alarm and detection probability is a fundamental challenge in the automated detection of contacts in passive sonar systems. A common approach is the application of highgain processing followed by successive classification criteria. Most classification schemes (e.g., …
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Evaluating Intrusion Detection Systems for Energy Diversion Attacks
… customer) versus cost of investigation and false alarms triggered due to probabilistic nature of IDS. Our main contribution is a Bayesian inspection game framework, which models the interactions between a profit-maximizing distribution utility and a population of strategic customers. In our …
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