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 21 for “"Intensity Measures"”.
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Improved ground motion intensity measures for reliability-based demand analysis of structures
… Sa,avg (T1,…,Tn), as scalar ground motion Intensity Measure (IM) when assessing the seismic performance of inelastic structures. Since the interval of periods where computing Sa,avg is related to the more or less influence of higher vibration modes on the inelastic response, it is …
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Stereological Interpretation of Rock Fracture Traces on Borehole Walls and Other Cylindrical Surfaces
… between the three-dimension fracture intensity measure, P32, and the lower dimension fracture intensity measures are studied. The analytical results show that the conversion factor between the three-dimension fracture intensity measure and the two-dimension intensity measure on …
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Role of Therapeutic Devices in Enhancing Speech Intelligibility and Vocal Intensity in an Individual with Parkinson’s Disease
… procedures. Speech intelligibility and average intensity measures under automatic, elicited, and spontaneous speech tasks were recorded pre- and postusage of APM and auditory masker for a period of 1 week each. Preliminary findings showed no significant difference in the measures between means …
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Seismic behaviours of adjacent building structures on liquefied soil
… site response analysis in the free-field, lower intensity ground shaking was observed at the ground surface when liquefaction occurs. The amount of reduction in soil amplification can be derived. The peak excess pore water pressure profile can be predicted by a modified simple liquefaction …
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Evaluation of cyclic behavior of dense sands under multidirectional loading using centrifuge tests
… a function of FSliq. Furthermore, Energy-based intensity measures (Arias and Housner intensities) provided nearly unique estimates of excess PWP and (v) for both 1D and 2D motions, indicating that they capture multi-directionality effects, while vectored peak accelerations and velocities (PGA …
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First- and Second-Order Properties of Spatiotemporal Point Patterns in the Space-Time and Frequency Domains
… a temporal dimension. First- and second-order intensity measures for analyzing spatiotemporal point patterns are explicitly defined. Estimation of first-order intensities are examined using 3-dimensional smoothing techniques. Conditions for weak stationarity are provided so that subsequent …
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Forecasting earthquake losses in port systems
… the use of spatially correlated ground motion intensity measures to estimate damage to pile-supported marginal wharves and container cranes of various configurations via fragility relationships developed by project team members, repair costs and downtimes subsequently determined via repair …
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Deep learning-based surrogate models for post-earthquake damage assessment
… seismic classifiers with up to 50 hand-crafted intensity measures (IMs) as inputs when trained for the simultaneous fragility estimation and (both local and global) damage classification of a code-conforming benchmark reinforced concrete (r/c) frame building. In Phase II, a MLP seismic …
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Effects Of Simultaneous Exercise And Speech Tasks On The Perception Of
… female). The dependent variables included vocal intensity, average fundamental frequency (F0), noise-to-harmonic ratio (NHR), jitter percent (jitt %), shimmer percent (shim %), and participants' self-perception of dyspnea. The results indicated that speech alone, whether it was with or without …
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Media news sentiment and Commodity futures dynamics
… and tests a new risk factor, media emotion intensity, to explore its value in predicting the cross section of commodity futures returns. Media emotion intensity measures the ratio of emotional content to factual content in media news, reflecting how much the media uses emotional words and …
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Dynamic behavior of operational wind turbines considering aerodynamic and seismic load interaction
… model. Engineering Demand Parameters (EDP) and Intensity Measures (IM) are then obtained from Incremental Dynamic Analysis (IDA) and used to assess the probability of exceeding different Damage States (DS) using fragility curves."--Abstract, page iv.</p>
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Hypersound interaction studied by time-resolved inelastic light and x-ray scattering
… sound wave in the sample. The scattered light intensity measures the occupation of the phonon modes. The central part of this work is the investigation of coherent high amplitude phonon wave packets which can behave nonlinearly, quite similar to shallow water waves which show a steepening of …
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Bayesian Methods for Intensity Measure and Ground Motion Selection in Performance-Based Earthquake Engineering
… by selecting appropriate ground motions and Intensity Measures (IM) for seismic analysis. This open-ended nature changes the quantified building performance depending upon the ground motions and IMs selected. So, improper ground motion and IM selection can lead to errors in structural …
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Numerical modeling of a bridge system & its application for performance-based earthquake engineering
… soil) and loading conditions (e.g., earthquake intensity, motion characteristics, and shaking orientation). In this context, two bridges with different soil and loading conditions were considered focusing on different aspects of their response. One was a two-span portion of a bridge supported by …
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System reliability analysis methods for rapid multi-scale network risk assessment and decision making
… network performance for random samples of hazard intensity measures and corresponding component status. This simulation-based approach allows for straightforward applications of deterministic network analysis algorithms, yet hampers rapid risk assessment and effective decision-making. Even though …
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Seismic Vulnerability Assessment of As-Built and Retrofitted Multi-Frame Box-Girder Bridges
… level of damage for a given ground motion intensity measure. In this study, PGA and spectral acceleration at 1 second period (Sa (1.0)) were considered as intensity measures (IM). For a thorough and advanced assessment, uncertainties associated with the earthquake, structural geometries, …
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Labor Unions, Corruption, and Electric Vehicles: Three Essays on Applied Microeconomics
… we propose a novel measure of anti-corruption intensity at the city level based on the percentage reductions in the city's revenue share of expensive restaurants after the issuance of Eight-Point Regulations on December 4, 2012. Second, using the city-level anti-corruption intensity measures, …
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Three essays on household welfare
… time trends, household- and province-level intensity measures, and an instrumental variables strategy. Chapter 2: To be Poor or to Feel Poor: Subjective Poverty Line Estimation in Peru This paper estimates the poverty line by means of a survey question on subjective economic welfare that …
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Building, Updating and Verifying Fracture Models in Real Time for Hard Rock Tunneling
Fractures and fracture networks govern the mechanical and fluid flow behavior of rock masses. Tunneling and other rock mechanics applications therefore require the characterization of rock fractures based on geological data. Field investigations produce only a limited amount of data from boreholes, …
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Four essays on statistical modelling of environmental data
… density, land use classes, and road traffic intensity measures. The statistical performance of LUR modeling via additive regression smoothers is contrasted with LUR modeling based on parametric polynomials. Model evaluation is based on goodness of fit, predictive performance, and a diagnostic …
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