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 15 of 15 for “"Shock model"”.
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Selected problems of inference on branching processes and poisson shock model
… some problems of branching processes and poisson shock model. Branching process methods have become extremely popular in recent days. This dissertation mainly explores two fundamental inference problems of Galton-Watson processes. The first problem is concerned with statistical inference regarding …
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Application of an empirically-derived polytropic index for the solar wind to a solar wind shock propagation model
… index to a two-dimensional solar wind computer model to simulate the effects of thermal heat conduction has been investigated. The current project involves the insertion of this empirically-derived polytropic index into a magnetohydrodynamic model of solar wind propagation. This computer model …
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Applications of Box-Jenkins methods of time series analysis to the reconstruction of drought from tree rings
… adjusting for the lag in response in regression models to reconstruct annual climatic or hydrologic series. The proposed methods are described and applied to test data from Oregon and Southern California. Transfer-function modeling is used to estimate the dependence of the current ring on past …
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Gamma-ray bursts with MeerLICHT
… injection. Through multi-wavelength theoretical modeling we found that a forward shock model within a stellar wind medium could explain all of our X-ray, optical and radio data, but not our 1.4 GHz upper limits. We suggested that a possible thermal electron population might explain the additional …
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Observations of X-ray counterparts to gamma-ray bursts in RXTE's All-Sky Monitor
… observations in the context of the Synchrotron Shock Model for GRB emission.
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Digital analysis of narrow band imagery of the Cygnus loop
… ratios are discussed in the context of recent shock model calculations. The spatial structure is categorized on the basis of the presence or absence of features in images isolating different emission lines, and the correlation or lack thereof between these features and features in the maps of …
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Impact of prophylactic intranasal oxytocin administration on symptoms of post-traumatic stress
… group) to conduct this experiment. Prior to foot shock treatment, rats were trained to expect a food reward (Kellogg’s Froot Loops) in an open field enclosure. Subsequently, the Oxytocin and the Oxytocin+Stress groups were pre-treated with intranasal oxytocin and then the Stress and …
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Aluminum-hydride formation in the relaxation zones following shock waves in the atmosphere of long-period variable stars
… lines in LPV spectra were investigated using a model of the post-shock relaxation zone. Conditions at the shock were linked to position in the atmosphere and phase by a global, isothermal shock model. In the relaxation zone model, 78 species were considered, including e('-), H, H('+), H('-), …
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Host modulation of excessive innate immune responses
… histones and rescue mice in a histone-induced shock model. Extracellular histones are released into tissue and circulation after cell necrosis or neutrophil extracellular trap formation. They are found in patients with severe inflammatory diseases and contribute to disease progression. However, …
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A role for polyunsaturated fatty acids in Th1-mediated disease
… EN-y) following endotoxin challenge in an LPS-shock model. Furthermore, feeding animals a CLA-supplemented diet significantly protected against the development of colitis in a DSS-induced model of inflammatory bowel disease, thus indicating that PUFA can exert beneficial and protective effects …
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Patterns of technology innovation in National Security Space acquisition
… the first context extension for the Epoch-Shock Model developed to characterize technology innovation at NASA Goddard Space Flight Center (GSFC). Using a multiple-case study approach, this work describes the innovation pathways through which specific Science and Technology (S&T) development …
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An analysis of reconnection dynamics in an eruptive flare model
… develops a one-dimensional, analytic model for current sheets that form during solar flares. The model uses a method developed by B. V. Somov & V. S. Titov for Petschek-type reconnection. The first part of this dissertation provides a detailed analysis of the Somov-Titov model, its …
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Innovation pathways in technology intensive government organizations : insights from NASA
… behavior, punctuated by transition inducing shocks. Acting individually, or in combination, these shocks can induce transitions from any one epoch to another. This new Epoch-Shock formulation enables a rethinking of the policy problem. Where the Stage-Gate model leads to an emphasis on …
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Hybrid shock dynamics models for heterogeneous explosives with embedded inert material
Made available in DSpace on 2016-03-02T20:24:08Z (GMT). No. of bitstreams: 3 LIEBERTHAL-DISSERTATION-2015.pdf: 17117421 bytes, checksum: cb0ad1c58510ca4b9b8e5a82e10486cc (MD5) Source Files.zip: 139575060 bytes, checksum: c8d25ed5b074095dc473e31bf00b8a2c (MD5) LICENSE.txt: 4215 bytes, checksum: …
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Essays in Modern Macroeconomics
… adjustments. This paper proposes a tractable model of a New Keynesian (NK) economy where, in addition to the standard price and quantity channels, firms are able to endogenously adjust the quality of their products in response to shocks. This new model, featuring endogenous product quality …