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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 350 for “"PHYSICAL PARAMETERS"”.
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An investigation of the physical parameters of PTO entanglements
… the literature is devoid of data addressing the physical parameters of how and why PTO entanglements occur. The pilot research contained in this thesis is the first step in understanding the physics of how PTO entanglements occur. Three variables were explored during this research - type of …
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To Study the Effect of Catalyst on the Physical Parameters of Carbon Spheres
<p>The discovery of fullerenes has opened up modern studies in carbon materials. Carbon nanoparticles have a large surface area and demonstrate good conductivity. Their unique properties has gained attention in many areas such as water filtration, hydrogen storage and battery electrodes. In this …
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Nonlinear System Identification of Physical Parameters for Damage Prognosis and Localization in Structures
… techniques and determine sensitivities of physical parameters to damage. Additionally, vibration-based spectral quantities are related to physical properties of the structure under test. In this thesis, nonlinear response to parametric excitation is exploited for nonlinear system …
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A study of the influence of physical parameters on the drying of porous media
An experimental setup is developed to observe the mass transfer that occurs in the drying of saturated porous media due to bulk flow of gas. The analysis and equations are developed in a one-dimensional perspective, and focus on the convection and evaporation that results. Humidity readings are …
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Classicism on the threshold of modernity: expanding the physical parameters of Odissi Dance for contemporary audiences
… researcher has performed personally. The basic parameters of Odissi's movement and dance techniques have been analysed informed by this discipline. Odissi has been reviewed historically, both when it was a medieval temple ritual and more recently when it was reconstructed as a classical Indian …
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Lipid composition and membrane physical parameters regulate priming and SNARE function in yeast vacuole membrane fusion
… of priming. The second mechanism is indirect and physical and is dictated by the physical parameters of the membrane such as curvature, fluidity and lateral tension. We report that inducing negative curvature on the vacuole membrane lowers the force threshold required for fusion, thus allowing …
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Distribution and physical parameters of solid waste disposal sites in Southwestern Virginia and the nature of leachate emissions
A total of 62 solid waste disposal sites were documented and evaluated in the 18 county study area of southwestern Virginia. The solid waste disposal operations encompassed a combined area in excess of 458.7 ha. An estimated 32 workers and 40 pieces of heavy equipment were utilized for the disposal …
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In-Situ Remediation of Small Leaks in Water Pipes: Impacts of Water Chemistry, Physical Parameters and the Presence of Particles
… at relatively low cost and inconvenience. Physical clogging, precipitation and metallic corrosion were identified as major mechanisms of in-situ leak remediation in potable water pipelines. Autogenous repair (i.e., self-repair without added particles) of small leak-holes (150–"1000 μm) in …
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A Photometric Study of the Eclipsing Binary V574 Lyrae
… excellent laboratories for determining stellar physical parameters and behavior. These parameters, when taken with those of other stars, can be used to evaluate current theories on stellar evolution and stellar structure. With the view of contributing useful data to this cause, a photometric …
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A critical assessment of crack growth criteria in unidirectional composites
… examined in detail with regard to the physical parameters affecting the results. Comparison is made with available experimental results. It is shown that the normal stress ratio theory provides good agreement with experimental crack growth direction, independent of physical parameters, …
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Application of the kinetic theory of partly ionized gases to radiation transfer and ionization in hydrogen nebulae
… exact equations shows that for a wide range of physical parameters a well defined ionized region surrounds the star. Ionizing radiation undergoes little absorption within this region, but it is rapidly extinguished at the boundary. The radius of the ionized region and the form of the boundary …
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Using inverse regression models to create gray box models for industrial facilities
… change-point regression models to determine the physical parameters, specifically overall heat transfer coefficient, surface area, and outdoor air mass flow rate of an industrial building through a simulation-based emulator. A simplified industrial building similar in size, energy usage, and …
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RELAMPAGO-CACTI drop size distribution observations and the implications for cloud and hydrologic studies
… a cutoff at 0.5 mm hr-1. The distributions of physical parameters (such as rain rate R, mass-weighted mean diameter Dm, and normalized droplet concentration Nw) for the raindrop spectra without classification appear to be similar amongst the sites, except for much broader distributions of Nw at …
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Analysis of vibration reduction via local structural modification
… is characterised by locally varying the physical parameters of the structural system, and, an algorithm is developed for the finite element implementation. The algorithm which determines the physical parameters to achieve the desired resonances and anti-resonances can be obtained by …
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ΣΤΟΧΑΣΤΙΚΗ ΕΠΕΞΕΡΓΑΣΙΑ ΠΟΛΥΔΙΑΣΤΑΤΩΝ ΓΕΩΛΟΓΙΚΩΝ ΣΗΜΑΤΩΝ
… THE MODELLING AND ESTIMATION OF MULTIDIMENTIONAL PHYSICAL PARAMETERS THAT OCCUR IN SEVERAL GEOLOGICAL AND MIXING APPLICATIONS, SUCH AS ESTIMATION OF THE ORE CONTENT IN A METALLIFEROUS AREA, THE CALCULATION OF THE SETTLEMENTS OF A MINE AND THE MAPPING OF THE WATER LEVEL OF AN EARTH DAM. THE …
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Damage Detection and System Identification using a Wavelet Energy Based Approach
… The first proposed method seeks to identify the physical parameters of an analytical model. First, the connection coefficients for the scaling function were developed for deriving the responses of the velocity and displacement from the acceleration responses. Next, defining the dominant sets …
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Behavior of low-frequency sound waves in porous media
… the relationship between the measured acoustic parameters and the measured physical parameters of porous media. Materials studied include crushed limestone, stream-formed pea gravel, large and small sifted pea gravels, and glass spheres. A standing wave curve fitting algorithm was applied to …
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The Jets in Radio Galaxies
… to redress the balance and to extract some physical information on the energy transport in these sources from their small-scale radio structure. In this chapter I introduce extragalactic radio sources and briefly describe the current state of knowledge about them and the physics we might …
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Acoustical characterization and parameter optimization of polymeric noise control materials
… the STL of polymeric materials, with respect to physical parameters that affect performance, are developed for single layer panel configuration and adapted for layered panel construction with homogenous core. An optimum set of material parameters is selected and translated into practical …
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Model Uncertainties and Joint Inversion in Geophysics
… surface of the Earth, and is used to estimate physical parameters of the subsurface. The related parameter estimation problems are typically characterized as inverse problems. Other types of data may include petrophysical data from borehole (core) drilling. All these types of data are then used …
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