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 109 for “"false alarms"”.
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False Alarms in the Forecasting of Solar Energetic Particle Events
… Earth but which failed to do so, may be termed “false alarms”. In this work, two simple SEP forecasting algorithms are defined: one (algorithm A.1) is based upon the observation of a magnetically well-connected CME with a speed of 1,500 km/s or greater (a ``fast CME''), and the other (algorithm …
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Visualizing object detection features
… For example, when we visualize high scoring false alarms, we discovered that, although they are clearly wrong in image space, they do look deceptively similar to true positives in feature space. This result suggests that many of these false alarms are caused by our choice of feature space, …
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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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Imperfect Diagnostic Automation: How Adjusting Bias and Saliency Affects Operator Trust
… the automation bias to either present false alarms or misses, the data reveal patterns of operator behavior consistent with a multiple-process cognitive model that allows non-selective effects of automation errors on operator behavior. These non-selective effects were eliminated by …
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Mutualism benefits and the evolution of an interspecific sentry call in associations between Sociable Weavers and Fork-tailed Drongos
… (Dicrurus adsimilis), birds which use both false alarms and aggression to steal food from other species (kleptoparasitism), and their most frequent host, the Sociable Weaver (Philetairus socius). While drongos apparently gain and weavers lose from this association, we investigated whether …
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Anomaly detection in rolling element bearings via two-dimensional Symbolic Aggregate Approximation
… of data in the time-frequency domain with low false alarms (< 8%). Analysis of real-world datasets validates the performance over the commonly used one-dimensional symbolic analysis by detecting 100% of experimental anomalous vibration with 0 false alarms in all fault types using less than 1 …
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Tenko: A Zero Trust Inspired Framework for Real-Time Network Defense via Intelligent Thresholding and Node-Level Anomaly Scoring
… starts acting suspicious, while avoiding false alarms from short-lived or harmless changes. What sets Tenko apart is its ability to learn and adjust dynamically. It uses a lightweight memory system to remember past behaviors and prioritize more recent ones, helping it make more accurate …
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Robust Anomaly Detection in Critical Infrastructure
… degrading devices, generating a high rate of false positives. We first study the problem of ML-based ADSs being vulnerable to non-adversarial perturbations, which causes a high rate of false alarms. To address this problem, we propose an ADS called DAICS, based on a wide and deep learning …
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Temporal Patterns for Burglar Alarms and Police-coded Burglaries
… when burglaries are actually occurring. Burglar alarms are also important as manifestations of the fear of crime and as attempts to reduce crime. As the fear of crime has increased the number of burglar alarms has increased also. Along with the increase in alarms came an increase in alarm calls …
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Applied performance analysis in canoe slalom
… balance between the risk of misses and false alarms (inversely proportional) with results supporting the use of race percentages off the class winner, rather than the K1M, and a 50% level of probability for predicting gaining a medal i.e. a low rate of false alarms (maximum 6%) and a …
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Numerical simulations of the forward problem and compressive digital holographic reconstruction of weak scatterers on a planar substrate
… Strong denoising parameter reduces false alarms and increases miss detection at the same time. The compressive framework is followed by a defect candidate selection process which helps to eliminate false alarms while preserving the desired signal by comparing the compressive …
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A Particle Filtering Approach to Joint Passive Radar Tracking and Target Classification
… difficulties caused by multiple targets, false alarms, and missed detections.
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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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Minimizing the Time of Day Effect Through the Use of Background Music
… older adults had significantly more false alarms than younger adults, and both younger and older adults performed the recognition task at a faster pace when music was present in the background.
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Automated Visual Inspection of Lace Using Machine Vision
… comparison is a crude one and generates many false alarms which are processed out using a neural network, trained to distinguish false alarms from genuine defects. The processing scheme was ultimately implemented on a fast PC with custom built frame store, and its operation was successfully …
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Robust acoustic signal detection and synchronization in a time varying ocean environment
… detection for a given tolerable probability of false alarm. The issue derives from the inherent coherence issues in the ocean environment which limit the useful matched filter length. This thesis proposes an alternative method of detection based on a recursive least squares linearly adaptive …
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Non-Invasive Motion Detection and Classification in NICU Patients using Ballistographic Signals from a Pressure Sensitive Mat
… on physiological signals and can result in false alarms in a continuous patient monitoring environment. This thesis explores the use of centre of pressure (COP) signals from a pressure sensitive mat to (a) detect patient movement in real-time, and (b) classify the upper/lower directionality …
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Robust acoustic signal detection and synchronization in a time varying ocean environment
… detection for a given tolerable probability of false alarm. The issue derives from the inherent coherence issues in the ocean environment which limit the useful matched filter length. This thesis proposes an alternative method of detection based on a recursive least squares linearly adaptive …
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DeepParse: Hybrid LLM-Guided Pattern Mining for Accurate and Reproducible Log Parsing
… Integrating DeepParse into LogBERT reduces false alarms by over 30% and improves throughput by 35% while cutting energy use by 78%. DeepParse demonstrates that combining LLM-guided pattern mining with deterministic execution yields an efficient and transparent foundation for intelligent …
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Finding bugs in software with a constraint solver
… - and generates counterexample traces with no false alarms. It is modular, requires no user-provided abstractions, and is fully automatic. It is based on the Alloy modelling language and analyzer. The method relies on a three-step translation: from code to a formula in Alloy, which is a …
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