Linear-scaling
Band structure interpolation using optimized local orbitals from linear scaling density functional theory
... For high quality basis sets, i.e., B-splines in the case of the toy model and an optimized set of NGWFs with sufficient degrees of freedom for the ONETEP calculations, band struc- tures generated with the two methods are ...
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Structures and Local Electronic States of Dislocation Loop in 4H SiC via a Linear Scaling Tight Binding Study
... It has been shown that the magnitude of the elements in the density matrix for insulators tends to decrease rapidly as the physical distance between the atomic sites increases. This is due to the localized nature of the ...
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Workshop report Linear Scaling Ab Initio Calculations: Applications and Future Directions
... Representing the electronic structure in Density Functional Theory (DFT) by a set of localized wave functions discretized on a real-space mesh essentially leads to a linear scaling of the com- putational ...
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Transform Ranking: a New Method of Fitness Scaling in Genetic Algorithms
... fitness scaling in genetic algorithms is presented alongside a new method called transform ...sigma scaling, linear rank scaling, nonlinear rank scaling, probabilistic nonlinear rank ...
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Non linear scaling of oxygen consumption and heart rate in a very large cockroach species (Gromphadorhina portentosa): correlated changes with body size and temperature
... It has been suggested that the ratio of metabolically active tissue to inactive tissue may partially explain the variation in V O2 scaling exponents observed among some insect taxa (Coelho and Moore, 1989; Kirkton ...
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The potential of imogolite nanotubes as (co )photocatalysts : a linear scaling density functional theory study
... in linear-scaling implementations of DFT (LS-DFT), which have made it possible to simulate systems up to several thousand atoms at DFT-level on aca- demically available hardware [120], and have been ...
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Compressed sensing to accelerate magnetic resonance spectroscopic imaging: evaluation and application to 23Na imaging of mouse hearts
... Typical CS reconstructed data from the virtual phantom (SNR = 32, 32 PE steps) are shown in Fig. 2, demonstrat- ing similar spatial and relative signal intensity distribu- tion to the FT data. Consistent with previous ...
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Terahertz emission driven by two-color laser pulses at various frequency ratios
... efficiency and stable THz generation, where periodic laser fields are necessary to ensure that net currents formed in different periods have the same sign. Among them, the 2n series shows the highest efficiency and the ...
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Simulations of nanocrystals under pressure : combining electronic enthalpy and linear scaling density functional theory
... a linear-scaling density-functional theory code of an electronic en- thalpy method, which has been found to be natural and efficient for the ab initio calculation of finite systems under hydrostatic ...
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Calculating optical absorption spectra for large systems using linear scaling density functional theory
... the scaling behavior of onetep for the conduction calcula- ...approximately linear up to 1000 atoms, and it is expected that this trend will continue up to larger system ...
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Linear scaling time dependent density functional theory in the linear response formalism
... achieves linear-scaling computational effort with system ...Furthermore, linear scaling of computational cost with system size is demonstrated on (10,0) carbon nanotubes of different ...
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Elastic energy storage in the mantis shrimp's fast predatory strike
... Given that few studies have examined the mechanical dynamics of exoskeletal springs, we have little basis for comparison of the linear model to other possible models. Indeed, one key issue in the mantis shrimp is ...
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Two dimensional surface waves in magnetohydrodynamics
... A dispersion relation is sought to gain insight into how waves will propagate in a magnetised fluid system. The derivation is very similar to the previous case with the magnetic field confined to the fluid. The ...
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Using wavelets to obtain a consistent ordinary least squares estimator of the long memory parameter
... In the next section we provide a brief theoretical background of the wavelet. 2 In the third section we de®ne the particular long-memory process in which we are interested. We then establish in the fourth section the ...
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An Improved Affine Scaling Interior Point Algorithm for Linear Programming
... The Simplex Method (SM) remained a popular solution method of practical lin- ear programming (LP) problems, until the development of interior point meth- ods. [1] was the pioneer in the field and his Projective ...
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Scaling the feeding mechanism of largemouth bass (Micropterus salmoides): kinematics of prey capture
... the scaling of mass to the scaling of length (assuming length scales to mass with a slope of ...the scaling of muscle contractile properties and sprint performance in the lizard Dipsosaurus dorsalis ...
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Multifractality of ab initio wave functions in doped semiconductors
... nite-size scaling analysis that aims to retrieve the critical prop- erties of the transition in the thermodynamic ...approach: linear- scaling DFT calculations using the ONETEP code [36], on ...
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Mathematical programming modelling tools for resource poor countries and organisations
... potentially be carried out with spreadsheets, for example, Monte Carlo simulation, decision trees, mixed integer and linear programming, non-linear optimisation, multi-criteria decision analysis [Taha 2008] ...
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Determination of secondary species in solution through pump selective transient absorption spectroscopy and explicit solvent TDDFT
... The measured electronic excitations of a given species in solution are often a com- posite of the electronic excitations of various equilibrium species of that molecule. It is common for a proportion of a species to ...
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Numerical Solution of Second Order Linear Fredholm Integro Differetial Equations by Trigonometric Scaling Functions
... x + − . We apply the suggested method with J = 1 and J = 2 . The behavior of the approximate solution using the proposed method with J = 1 , J = 2 and the exact solution are presented in Figure 1. In Table 1, we give the ...
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