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 23 for “"Structural identification"”.
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Structural Identification and Buffet Alleviation of Twin-Tailed Fighter Aircraft
We tackle the problem of identifying the structural dynamics of the twin tails of the F-15 fighter plane. The objective is to first investigate and identify the different possible attractors that coexist for the same operating parameters. Second is to develop a model that simulates the …
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Experimental verification and development of structural identification techniques on a grid
… work that is reported herein deals with system identification methods for large flexible structures. Proposed space missions for the future include the deployment of large flexible structures, e.g., NASA's proposed space station. These structures must be controlled to maneuver the structure to …
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Probabilistic approaches in civil engineering: generation of random fields and structural identification with genetic algorithms
… lies in the field of non-destructive parametric structural identification. Its objective is to evaluate the mechanical characteristics of constituent bars in existing truss structures, using static loads and strain measurements. In the cases of missing data and of damages that interest only a …
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Isolation and structural identification of an alarm pheromone from the giant danio Danio malabaricus (Cyprinidae, Ostariophysi, Pisces)
Im Rahmen dieser Arbeit wurden die chemischen und strukturellen Merkmale sowie die biologische Bedeutung des Schreckstoffs des Danio-Fisches Malabarbärbling untersucht. Die Isolierung und Identifizierung der Pheromon-Substanz wurde mit Hilfe der Methoden (HPLC, GFC, UV-VIS, NMR and LDIMS) …
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Molecular growth pathways in silica sol-gel polymerization
… polymerization. This protocol allowed the structural identification of mono- through hexasilicate species (1<x<6 in [SixOy]9OCH3)a) formed during partial hydrolysis and condensation of tetramethylorthosilicate.
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Decentralized identification and multimetric monitoring of civil infrastructure using smart sensors
… Networks (WSSNs) facilitates a new paradigm to structural identification and monitoring for civil infrastructure. Conventionally, wired sensors and central data acquisition systems have been used to characterize the state of the structure, which is quite challenging due to difficulties in …
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The synthesis and characterization of alginate-melanin hydrogels for applications in forensic science
… with significant ion suppression. Although structural identification of reaction products was inconclusive, hydrogel formation proceeded to observe properties of covalently bound and/or crosslinked alginate-melanin hydrogels. Using click chemistry, alginate-azide was covalently crosslinked …
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Microwave synthesis and occlusion reactions of zeolites
… cavities. Particular attention is given to the structural identification of the silver nitrate superlattice formed within zeolite A.
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Identification of soybean, Glycine max (L.) Merr., cytokinins
… ion monitoring GC-MS did not yield conclusive identification of the cytokinins. Based on bioassay, the biological estimates of cytokinin-like substances present in the extracts were below the detection limit of the GC-MS. Obtaining sufficiently large samples of soybean fruits at the proper …
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Simulation and identification of gene regulatory networks
… (ii) two state of the arts algorithms for the structural identification of gene networks from single-gene knockout measurements; (iii) an approach to reverse-engineering gene networks from heterogeneous compendia; (iv) a methodology to infer gene interactions fromsystems genetics dataset. These …
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Isolation and characterization of the female sex pheromone of the sugar beet cyst nematode, heterodera schachtii, and an analysis of male precopulatory behaviour /
… of H. schachtii may, ultimately, lead to the structural identification and synthesis of the active substance for use in a novel biological control strategy.
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System identification of dynamic structural systems using continuous-time domain methods
Structural system identification is the process of deducing the properties of a structural system from its measured response to ambient vibration by fitting a mathematical model. The objectives of this study are to: (1) investigate the use of existing system identification methods, and (2) develop …
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Advanced and complete functional series time-dependent ARMA (FS-TARMA) methods for the identification and fault diagnosis of non-stationary stochastic structural systems
… as TV structures and their vibration-based identification under normal operating conditions is a significant and challenging problem. An important class of parametric methods for the solution of this problem is based on Functional Series Time-dependent AutoRegressive Moving Average …
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Systems and control problems in early systems design
… problems in the field of integrated design and identification of relevant control theoretic concepts and tools. - Study of Model Orientation for linear implicit state-space models and definition of classes of oriented realisations. - Development of solutions to two problems of Structural …
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Rapid identification, confirmation, and quantitation using an open-air ion source coupled to a time-of-flight mass spectrometer
… spectrometric fragmentation data can aid in the structural identification of an analyte as compounds produce characteristic fragment-ions based on their structure. The TOP's ability to produce fragmentation spectra was compared to the more traditional tandem mass spectral method (MS/MS) …
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Learning Structures : fusing deconvolution-based seismic interferometry with Bayesian inference for structural health assessment
… present a two-step computational methodology for structural identification and damage detection via fusing the concepts of seismic interferometry and Bayesian inference. Firstly, a deconvolution-based seismic interferometry approach is employed to obtain the wave-forms that represent the impulse …
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On the bicyclic acids of petroleum
The identification of petroleum acids, also known as ‘naphthenic’ acids (NA), has been an analytical challenge for over 140 years. However, most recent interest in NA has arisen due to concerns over their presence and apparent associated toxic effect in oil platform produced waters and oil sands …
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Characterization and quantification of urinary metabolic biomarkers for early response to anti-tuberculosis treatment
… biomarker discovery is metabolite identification, as approximately 50% of detectable products do not match structures in existing databases. In concordance with this, several of the potential small molecule biomarkers of anti-TB treatment response lacked structural identification. …
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Synthetic Molecular Models for the Oxygen Reduction Active Sites in Heteroatom-Doped Graphitic Electrocatalysts: Linking Heterogeneous and Homogeneous Electrocatalysis
… In Chapter 2, we synthesize a functional structural molecular platform for modeling the ORR active sites in Fe-N-C materials. We show that the complex more faithfully represents the Fe-containing sites in Fe-N-C materials compared to legacy pyrrolic and pyridinic macrocycle complexes, …
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