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 30 for “"frequency-magnitude"”.
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The effects of perturbation frequency, magnitude, and uncertainty during static and dynamic tracking on the estimated level of muscle co-contraction
… isometric tracking the effects of perturbation frequency, perturbation magnitude, tracking gain, tracking phase and the absence or presence of preview information on the level of antagonistic co-contraction about the elbow were investigated. The effects of these variables on the tracking error …
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Understanding the nuances of the rockfall frequency-magnitude relationship: review and examples from two original case studies in Glenwood Canyon, CO, USA
The rockfall frequency-magnitude relationship is important for understanding rockfalls as a geomorphic agent and as a key mass-wasting hazard. The relationship is frequently modeled with a power law fit to frequency vs. volume, and the power law provides a basis for extrapolating recurrence …
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ΠΡΟΤΑΣΗ ΤΡΟΠΟΠΟΙΗΜΕΝΗΣ ΣΧΕΣΗΣ ΣΥΧΝΟΤΗΤΑΣ-ΜΕΓΕΘΟΥΣ ΣΕΙΣΜΩΝ ΚΑΙ ΣΥΜΒΟΛΗ ΤΗΣ ΣΤΗ ΜΕΛΕΤΗ ΤΗΣ ΣΕΙΣΜΙΚΟΤΗΤΑΣ ΤΟΥ ΕΛΛΗΝΙΚΟΥ ΧΩΡΟΥ
… OF GUTENBERG-RICHTER RELATION FOR THE CUMULATIVE FREQUENCY-MAGNITUDE DISTRIBUTION IS MAINLY PROPOSED AND TESTED. THE TOWN OF THEMODIFIED FORMULA IS N(M)=- A1+A2 EXP (-BM). THIS DISTRIBUTION IS BOUND TO THE RIGHT. THE UPPER BOUND IN MAGNITUDES IS GIVEN BY THE EQUATION MUB=1/B LN A2/A1.BASED ON THE …
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Statistical modeling of rare stochastic disturbance events at continental and global scales: post-fire debris flows and wildland fires
Chapter 1: Frequency-magnitude distribution of debris flows compiled from global data, and comparison with post-fire debris flows in the western U.S. Forecasting debris flow hazard is challenging due to the episodic occurrence of debris flows in response to stochastic precipitation and, in some …
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Statistical modeling of rare stochastic disturbance events at continental and global scales: post-fire debris flows and wildland fires
Chapter 1: Frequency-magnitude distribution of debris flows compiled from global data, and comparison with post-fire debris flows in the western U.S. Forecasting debris flow hazard is challenging due to the episodic occurrence of debris flows in response to stochastic precipitation and, in some …
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It’s Not Just a Phase: Real-Time Aeroelastic Flutter Control Optical Flow Sensing and Piezoelectric Control of Aeroelastic Flutter
… flow from live camera images; the dominant frequency (5.3–5.6 Hz) was identified using FFT analysis. A Hilbert transform obtained instantaneous waveform phase. Phase-locked square wave actuation (0–4.2 V, amplified 300×to 0–1260 V) was applied at the measured flutter frequency with …
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Source studies over a wide range in earthquake magnitude
… and the empirical linear relation between magnitude and the log₁₀ of the number of events (the Gutenberg-Richter relation) describe well the behavior and recurrence of many earthquake data sets. The universality of these relations are tested herein using a suite of earthquakes from the …
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Seismicity of Libya and related problems
… Statistical analysis is used to calculate the frequency-magnitude relation for the data in the period from 1963 to 1982. The results indicate that about 140 earthquakes will equal or exceed a Richter magnitude of 5 every 100 years, and one earthquake will equal or exceed a Richter magnitude of …
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Earthquake nucleation and rupture at a range of scales : laboratories, gold mines, and subduction zones
… of seismic events over a size range that spans magnitudes M [approx.] -2 to 8 in order to study earthquake source processes. In addition, we conducted laboratory experiments to study interseismic behaviors that can influence earthquake nucleation and we developed a model of eathquake rupture to …
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THE PSYCHOLOGICAL AND PHYSIOLOGICAL EFFECTS OF MAKING WEIGHT IN INTERNATIONAL LEVEL TAEKWONDO ATHLETES
… Despite a raft of literature examining the frequency, magnitude, occurrence and influences of these practices, the motivations to engage in this convention are still largely unknown. Additionally, few studies have investigated this population for both body composition and activity energy …
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A content analysis of selected United States history textbooks concerning World War II
… coded from each textbook according to inclusion, frequency, magnitude, and direction. Jury validity was utilized, and three professional historians used as independent coders confirmed instrument reliability.Findings1. Events were included in a greater percentage than people or themes.2. American, …
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Relationship between School Administrations and Secondary School Students’ Protests in Ilala Municipal Council in Dar es Salaam Tanzania
… the perception of school stakeholders on the frequency, magnitude and effects of secondary school students protest in schools; investigating causal factors of secondary schools students’ protests; investigating the relationship between the school administration and secondary schools students´ …
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Keep the Lights On: Ensuring Bulk-Power System Reliability in a Decarbonized Future
… of power supply shortfalls (i.e., duration, frequency, magnitude). This has key implications on how end-use customers think about losing power for some period of time, how much they are willing to pay for customer-side reliability, and how their preferences are reflected at the system level.
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A Comparison of Brain Trauma Characteristics from Head Impacts for Lightweight and Heavyweight Fighters in Professional Mixed Martial Arts
… influence the risk for head injury include the frequency, magnitude and interval of head impacts. The purpose of this study was to compare differences in frequency, frequency distribution of impact magnitudes, and time interval between head impacts per match between Lightweight and Heavyweight …
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Python-based tools for characterizing geosynchronous satellite behavior and evaluating maneuver prediction techniques
… one station-keeping cycle and the next, the frequency, magnitude, and direction of maneuvers can change. Additionally, there is very little accountability among operators to disclose detailed mission objectives and precise orbital data or to adhere to operational guidelines. This complicates …
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A Study on the Dynamic Characterization of a Tunable Magneto-Rheological Fluid-Elastic Mount in Squeeze Mode Vibration
… of mitigating input vibrations of varying magnitudes and frequencies depending on electromagnetic flux. Various mechanical components are synthesized into a dynamic testing rig in order to extract vibrational characteristics of the mount and to compare it with existing mount technologies. …
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Cyclic Loading Effects on Craniofacial Strain and Sutural Growth in Pigs
… a consistent load output and, strains of desired frequency, magnitude and polarity at the loaded NFS. Ex vivo, only the loaded NFS showed significant tensile strain (+898 µɛ) while the non-loaded NFS experienced smaller tensile strain (+660 µɛ). Internasal sutures experienced strain magnitudes …
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Investigating cross-clade immune responses in HIV-1 subtype C-infected individuals from South Africa: implications for HIV vaccine design
… using multiparameter flow cytometry. Results The magnitude and breadth of HIV-specific T-cell responses were similar between the two clade-C peptide reagents in a clade C-infected population. However, the magnitude and breadth of responses to peptides based on clades A, B and D were significantly …
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Antiretroviral Treatment as Prevention in African HIV-1 Serodiscordant Couples: Understanding the Challenges and Opportunities
… virologic rebound after initial suppression, 2) frequency, magnitude and correlates of seminal HIV-1 RNA shedding in men initiating ART, 3) residual HIV-1 transmission risk during the first 6 months of ART, and 4) sexual risk behavior before and after ART. Younger age was associated with delayed …
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A Dendroclimatic Investigation of Southwestern Saskatchewan
… record of natural variability. Understanding the frequency, magnitude, and duration of past climate extremes allows researchers to better forecast the probability of future extreme hydrological events. Through standard dendrochronological methods, fifteen moisture sensitive tree-ring chronologies …
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