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 8 of 8 for “"Rigidity theory"”.
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On the Structure and Dynamics of Aluminophosphate Glass-forming Melts measured by Dynamic Light Scattering
… that this pattern fits with predictions of the rigidity theory and may be linked to a common dependence on the entropy of the liquid as a function of the network connectivity described by a two-state bond model.
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On the foldability of rigid origami
… rigid origami and its cognate areas, such as the rigidity theory, graph theory, linkage folding, abstract algebra and computer science. (2) We develop the rigidity theory for rigid origami under the folding angle description, including the generic rigidity and local rigidity. Generic rigidity …
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Rigidity operators and the flexibility of infinite bar-joint frameworks
… techniques from functional analysis and operator theory to develop the linear infinitesimal theory of crystal frameworks in the Euclidean space Rd. In this mathematical theory we obtain sufficient conditions for the boundedness of the rigidity matrix R(G), viewed as a Hilbert space operator, for …
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When problems knock at the organization's door - a theory of motivation to change, problemistic search and choice of action : organization theory under a behavioral lens
… perspectives – including the behavioral theory of the firm, threat-rigidity theory, institutional theory, and organizational learning theory – and multiple methodologies – such as computer simulation and statistical analysis (dynamic panel data analysis and multilevel modeling) – to stake …
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Geometry-based structural analysis and design via discrete stress functions
… century graphic statics, projective geometry and rigidity theory to provide an interactive design and analysis framework through which information about designed structural performance can be geometrically encoded in the form of the characteristics of the stress function. This method results in …
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Generalizations of Kempe's universality theorem
… to prove the coNP-hardness of testing the rigidity of a given configuration of a linkage. While this theorem has long been assumed in rigidity theory, we believe this to be the first published proof that this problem is computationally intractable. This thesis is joint work with Reid W. …
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Results on the interaction between atomistic and continuum models
… representation. In particular, we show using rigidity theory that the distribution associated with the potential part of the atomistic stress tensor can be decomposed into an irrotational part that is independent of the potential energy representation, and a traction-free solenoidal part. …
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Boson Mode, Dimensional Crossover, Medium Range Structure and Intermediate Phase in Lithium- and Sodium-Borate Glasses
<p>We examine the physical behavior of dry (Li2O)x(B2O3)100-x glasses (LBG) and (Na2O)x(B2O3)100-x glasses (SBG) in Raman Scattering, Modulated-Differential Scanning Calorimetry, FTIR and Impedance Spectroscopy. Calorimetric data show the existence of a reversibility window in the 14% < x < 27% …