Browsing Research Centers by Issue Date
Now showing items 1-20 of 86
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On the Lawrence-Doniach and Anisotropic Ginzburg-Landau models for layered superconductors
(Siam Publications, 1995-02)The authors consider two models, the Lawrence-Doniach and the anisotropic Ginzburg-Landau models for layered superconductors such as the recently discovered high-temperature superconductors. A mathematical description of ... -
Issues related to least-squares finite element methods for the stokes equations
(Siam Publications, 1998-10)Least-squares finite element methods have become increasingly popular for the approximate solution of first-order systems of partial differential equations. Here, after a brief review of some existing theories, a number ... -
A numerical study of periodic disturbances on two-layer Couette flaw
(AIP Publishing, 1998-12)The flow of two viscous liquids is investigated numerically with a volume of fluid scheme. The scheme incorporates a semi-implicit Stokes solver to enable computations at low Reynolds numbers, and a second-order velocity ... -
Comment on "A numerical study of periodic disturbances on two-layer Couette flow" [Phys. Fluids 10, 3056 (1998)]
(AIP Publishing, 1999-10)The flow of fluids with different viscosities, subjected to an interfacial perturbation, can lead to fingering and migration... -
On efficient solutions to the continuous sensitivity equation using automatic differentiation
(Siam Publications, 2000-06)Shape sensitivity analysis is a tool that provides quantitative information about the influence of shape parameter changes on the solution of a partial differential equation (PDE). These shape sensitivities are described ... -
Mesh independence of Kleinman-Newton iterations for Riccati equations in Hilbert space
(Siam Publications, 2008)In this paper we consider the convergence of the infinite dimensional version of the Kleinman-Newton algorithm for solving the algebraic Riccati operator equation associated with the linear quadratic regulator problem in ... -
Antibacterial efficacy of core-shell nanostructures encapsulating gentamicin against an in vivo intracellular Salmonella model
(Dove Medical Press, 2009-01-01)Pluronic based core-shell nanostructures encapsulating gentamicin were designed in this study. Block copolymers of (PAA(+/-)Na-b-(PEO-b-PPO-b-PEO)-b-PAA(+/-)Na) were blended with PAA(-) Na(+) and complexed with the ... -
Inexact Kleinman-Newton method for Riccati equations
(Siam Publications, 2009-03)In this paper we consider the numerical solution of the algebraic Riccati equation using Newton's method. We propose an inexact variant which allows one control the number of the inner iterates used in an iterative solver ... -
Local improvements to reduced-order models using sensitivity analysis of the proper orthogonal decomposition
(Cambridge University Press, 2009-06)The proper orthogonal decomposition (POD) is the prevailing method for basis generation in the model reduction of fluids. A serious limitation of this method, however, is that it is empirical. In other words, this basis ... -
Shape Sensitivity Analysis in Flow Models Using a Finite-Difference Approach
(Hindawi Publishing Corporation, 2010)Reduced-order models have a number of practical engineering applications for unsteady flows that require either low-dimensional approximations for analysis and control or repeated simulation over a range of parameter values. ... -
Olefin cross-metathesis, a mild, modular approach to functionalized cellulose esters
(The Royal Society of Chemistry, 2014-09-02)Olefin cross-metathesis has been demonstrated to be a modular pathway for synthesis of a series of functionalized cellulose esters. As a proof of concept, cellulose acetate was acylated with two terminally olefinic acid ... -
Model Reduction for DAEs with an Application to Flow Control
(Springer-Verlag Berlin, 2015-01-01) -
Nucleobase-functionalized acrylic ABA triblock copolymers and supramolecular blends
(The Royal Society of Chemistry, 2015-01-30)Reversible addition-fragmentation chain transfer (RAFT) polymerization afforded the unprecedented synthesis of well-defined acrylic ABA triblock copolymers with nucleobase-functionalized external blocks and a central ... -
Imidazole-containing triblock copolymers with a synergy of ether and imidazolium sites
(The Royal Society of Chemistry, 2015-03-06)Reversible addition-fragmentation chain transfer (RAFT) polymerization enabled the synthesis of well-defined A-BC-A triblock copolymers containing a synergy of pendant ether and imidazolium sites. The soft central BC block ... -
Imparting functional variety to cellulose ethers via olefin cross-metathesis
(The Royal Society of Chemistry, 2015-04-09)Olefin cross-metathesis is a valuable new approach for imparting functional variety to cellulose ethers. Starting from commercially available ethyl cellulose, terminally unsaturated alkyl groups were appended as metathesis ... -
Peptide-based hydrogen sulphide-releasing gels
(The Royal Society of Chemistry, 2015-07-20)An aromatic peptide amphiphile was designed for delivery of the signaling gas H2S. The peptide self-assembled in water into nanofibers that gelled upon charge screening. The non-toxic gel slowly released H2S over 15 hours, ... -
Size dependent ion-exchange of large mixed-metal complexes into Nafion® membranes
(The Royal Society of Chemistry, 2015-08-18)Perfluorosulfonate ionomers have been shown to demonstrate a profound affinity for large cationic complexes, and the exchange of these ions may be used to provide insight regarding Nafion® morphology by contrasting molecular ... -
Phosphonium-containing diblock copolymers from living anionic polymerization of 4-diphenylphosphino styrene
(The Royal Society of Chemistry, 2015-11-20)Living anionic polymerization of 4-diphenylphosphino styrene (DPPS) achieved well-defined homopolymers, poly(DPPS-b-S) styrenic block copolymers, and poly(I-b-DPPS) diene-based diblock copolymers with predictable molecular ... -
A new wavelet family based on second-order LTI-systems
(Sage Publications, 2016)In this paper, a new family of wavelets derived from the underdamped response of second-order Linear-Time-Invariant (LTI) systems is introduced. The most important criteria for a function or signal to be a wavelet is the ... -
Elucidating the Potential Biological Impact of Cellulose Nanocrystals
(MDPI, 2016-07-08)Cellulose nanocrystals exhibit an interesting combination of mechanical properties and physical characteristics, which make them potentially useful for a wide range of consumer applications. However, as the usage of these ...
