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 20 for “"stretched exponential"”.
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Stretched Exponential Decline Model as a Probabilistic and Deterministic Tool for Production Forecasting and Reserve Estimation in Oil and Gas Shales
… forecasts without additional safeguards. Stretched Exponential decline model (SEDM) gives considerably more stabilized production forecast than traditional DCA models and in this work it is shown that it produces unchanging EUR forecasts after only two-three years of production data are …
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Investigation of polarization switching over broad time and field domains in various ferroelectrics
… relaxation studies have been fit to multiple stretched exponential functions extending over decades of order of magnitude in the time domain. Stretched exponential functions for domain nuclei formation, and for domain variant growth have been found. For example, [001]c, [110]c, and [111]c …
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Study of the Effect of Fracture Completion Variables on Decline Curve Parameters for Long-Term Production Forecast of Shale Liquids
… is a combination of the traditional Arps and Stretched Exponential production decline models designed to fit the forecasts for individual flow regime production data. Simulations using identical reservoir properties but different fracture completion parameters were analyzed and fit to decline …
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Dynamics from an equilibrium lattice model of a microemulsion
… found to follow a Kohlrausch-Wiliams-Watts (KWW) stretched-exponential law, rather than a simple exponential decay. The stretched exponent is related to the normal, inhibited and enhanced diffusion behaviors of the system.</p>
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Analysis of dislocation pipe diffusion in deformed alpha-phase PdHX using a synthesized QENS approach
… deformed PdH_x found to be a summed KWW/single exponential fit. The results show that the DPD contribution to the F_inc(Q,t) can be well described using a stretched exponential (KWW) mode, which is qualitatively correlated to the heterogeneity of the diffusive modes expected for the near-core …
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Energy landscape statistics and coarsening in liquids: a relaxation mode analysis
… was used to analyze three empirical models, i.e. exponential relaxation, stretched exponential relaxation, and relaxation arising from normally distributed activation energies. Furthermore, we applied RMA to study the relaxations of a Kob-Andersen liquid when dynamical cooperativity emerges in the …
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Optical studies of colloidal quantum dots : optical trapping with plasmonic nanoapertures and thermal recovery from photoinduced dimming
… thermal recovery was well described by a stretched exponential function, and further analysis yielded an underlying probability distribution of rate constants. Casting the rate constants as a collection of first-order activated processes provided an activation barrier probability …
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Prediction of velocity distribution from the statistics of pore structure in 3D porous media via high-fidelity pore-scale simulation
… the distribution of high velocities including stretched exponential and power-exponential distributions but without an underlying mechanistic or statistical physics theory. Here, we investigate the relationship between the structure of the host medium and the resulting fluid flow in random …
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Study of the time-dependent rheological behaviour of lead-free solder pastes and flux mediums used for flip-chip assembly applications
… solder paste and flux medium structure using the stretched exponential model. In the final part of the study the printing trials of four different solder paste samples were carried out to investigate the effect of post-print rest period on slumping behaviour of solder paste. From the experimental …
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Quantitative Extraction of Bias Stress Parameters in Thin Film Transistors
… the accuracy of this method is low, so a stretched exponential fitting method is applied to extract the threshold voltage shift. The accuracy of the attempt-to-escape frequency estimation is increased by an order of magnitude and hence the estimation of the activation energy distribution …
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Ensemble and single molecules fluorescence studies of polymers
… function of reduced linear dichroism is fit by a stretched exponential function. The fitting results suggest that non-exponential decay of correlation function. However, more rigorous study is needed because of the intrinsic statistical error of limited experimental data and the effect of high …
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Nanoporous glass-ceramics transparent in infrared range to be used as optical sensor-Mechanical and viscoelastic properties of the TAS (Te-As-Se) glass
… elasticity process which are well described by a stretched exponential function KWW (Kolraush-Williams-Watt).
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Dielectric relaxation behavior of poly(3-hydroxybutyrate)
… model and the Kohlrausch-Williams-Watts stretched exponential function. It was found that the center of relaxation time in the Havriliak-Negami model was skewed toward short time scale of relaxation, while mean relaxation time reflected the relaxation behavior of PHB chains on average, …
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Dynamics of nanoparticles in complex fluids.
… concentration and it can be fitted with a stretched exponential function. At high concentration of the polymer, a clear subdiffusive motion of the particles was observed. The results were compared with the diffusion of free dyes, which showed normal diffusive behavior for all …
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Inhomogeneous 1H NMR spin-lattice relaxation in the organic superconductor κ-(BEDT-TTF)2-Cu[N(CN)2]Br
The two-dimensional superconductors based on the organic molecule “ET” have been an active area of research since their discovery over two decades ago. The member of this family with the highest critical temperature, κ-(ET)2Cu[N(CN)2]Br (Tc=11.7 K), has seen renewed interest since the observation …
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Spam Analysis and Detection for User Generated Content in Online Social Networks
… in these OSNs does not follow commonly assumed exponentialdistributions. We also show that the user posting behavior in these OSNsfollows stretched exponential distributions instead of widely accepted powerlaw distributions. Our discovery lays a foundation for user behavior analysisin social …
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Dielectric Properties of Molecular Glass Formers; from the Liquid State to the Tunneling Regime
… extracted for molecular glasses appears as a stretched exponential.
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Numerical studies on many-body localization
… nose of the mobility edge. Also, the OPOs decay exponentially in real space, with a correlation length that increases at low disorder. In addition, we find that the probability distribution of the strength of the large-range coupling constants of the number operators generated by the OPOs …
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NANOSTRUCTURED COMPOSITE FILMS FOR BRAIN-MACHINE INTERFACE APPLICATIONS
… properties such as short-time memory with stretched-exponential relaxation, and potentiation/depotentiation for subsequent applied voltage pulses. I characterized the bilayered NCAF conduction processes, suggesting a memristive-like model to explain the system's hysteresis characteristics …