###### simulation

- Finally, we construct the optimization algorithm, and have carried out numerical simulation. (aimsciences.org)
- The laboratory experiments were modelled using numerical reservoir simulation software. (bibsys.no)
- In multibody dynamics, the Euler parameters are often used for the numerical simulation of rigid body rotations because they lead to a relatively simple form of the rotation matrix which avoids the evaluation of trigonometric functions and can thus save computational time. (springer.com)
- These preferences contribute to reduce the computational time in a multibody simulation program, although an inner constraint has to be observed as four parameters \(e_{0}, e_{1}, e_{2}, e_{3}\) are used for describing the three rotational degrees of freedom of a rigid rotation. (springer.com)
- The estimation of the unknown parameters is carried out in two different methods, the maximum likelihood method and a naive method proposed by Carlton [ 16 ], of which performances are compared by a simulation study. (hindawi.com)
- The simulation code is used to demonstrate the robustness of the motility mechanisms and detailed parameter studies are provided to contribute to a better understanding of the mechanisms behind cell motility for environments without local adhesion. (royalsocietypublishing.org)
- Ait Abderrahmane , H., Fayed, M. and Ng, H.D. (2017) Flow visualization and numerical simulation of a two-dimensional fluid flow over a foil. (concordia.ca)

###### simulations

- The numerical simulations presented here also generate new hypotheses. (royalsocietypublishing.org)
- In the first case, with a surface tension using a numerical approach based on hybrid lattice Boltzmann simulations, in the second, the same setting is considered using a stream-function finite difference scheme and in the third a droplet of fixed shape is considered using an analytic description. (royalsocietypublishing.org)
- In the absence of independent random errors,sitive to numerical tolerances than forming simulations are. (slideshare.net)

###### algorithms

- 摘要: In this talk we present two classes of numerical algorithms for Stokes Darcy interface problems. (sdu.edu.cn)
- Linear combinations of these modes approximate the eigenvalue spectrum and eigenfunctions in a systematically improvable manner, and the localization properties of compressed modes make them an attractive choice for use with efficient numerical algorithms that scale linearly with the problem size. (pnas.org)

###### formulas

- However, if Euler parameters are used for the description of the generalized coordinates regarding the rotation, the Newmark formulas also influence the numerical behavior of the Euler parameters and therefore may introduce spurious damping with a high amount also in simple examples in which the system is conservative. (springer.com)
- Parameter sprinkling is the practice of "hard wiring" numerical parameters into cell formulas. (chacocanyon.com)

###### 2018

- 2018): Multi-stage core formation in planetesimals revealed by numerical modelling and Hf-W chronometry of iron meteorites. (dlr.de)
- Zhang, Y., Fang, Y., Ng, H.D. and Teng , H.H. (2018) Numerical investigation on the Initiation of oblique detonation waves in stoichiometric acetylene-oxygen mixtures with high argon dilution. (concordia.ca)
- Yang, P.F., Teng , H.H., Jiang, Z.L. and Ng, H.D. (2018) A numerical study on the Instability of oblique detonation waves with a two-step induction-reaction kinetic model. (concordia.ca)

###### instability

- As the considered motility mode results from a physical instability, a stable numerical discretization is essential for a detailed analysis. (royalsocietypublishing.org)

###### spurious

- Indeed, these methods can suffer of undesirable limitations, such as ill-conditioning of the stiffness matrix, spurious or incorrect pressures and numerical locking (severe stiffening near the incompressible limit) [ 2 ], especially if low-order shape functions are adopted, due to the enforcement of the incompressibility constraint-i.e. the requirement that the displacement field is divergence-free. (springer.com)

###### estimation

- Parameter estimation for infectious disease models is important for basic understanding (e.g. to identify major transmission pathways), for forecasting emerging epidemics, and for designing control measures. (royalsocietypublishing.org)
- We examine estimation of the parameters of Susceptible-Infective-Recovered (SIR) models in the context of least squares. (aimsciences.org)
- This article considers the estimation of the unknown numerical parameters and the density of the base measure in a Poisson-Dirichlet process prior with grouped monotone missing data. (hindawi.com)

###### coefficient

- This study is intended to construct a parabolic distributed parameter system to describe the variation of DO under the ice, and identify the vertical exchange coefficient K of DO with the field data. (aimsciences.org)
- The second is finite element method with temporal step size on each physical domains depending on the physical parameters such as the hydraulic conductivity and the viscosity coefficient. (sdu.edu.cn)
- Numerical calculations are performed for two composite slabs, whose heat transfer coefficient on the heated surface is either an exponential or a trigonometric function of time. (hindawi.com)
- The numerical results demonstrate the effects of temporal variations in the heat transfer coefficient on the transient temperature field of composite slabs. (hindawi.com)

###### behavior

- Finally, we investigate the parameter dependence of both the time span of realistic behavior and growth of the concrete layer for the 1-D model. (springer.com)

###### optimization

- Differential evolution - Based on vector differences and is therefore primarily suited for numerical optimization problems. (wikipedia.org)

###### trigonometric

- Compared to other parametrizations of SO(3), Euler parameters are singularity-free and avoid the introduction of trigonometric functions. (springer.com)

###### algorithm

- A solution technique for the constrained parameter recovery models that uses the Kuhn-Tucker conditions, the Lagrange function, and the Levenberg-Marquardt algorithm is briefly reviewed. (usda.gov)
- "Effect of Transformations of Numerical Parameters in Automatic Algorithm Configuration" , A. Franzin, L. Pérez Cáceres, T. Stützle. (ac.be)

###### robustness

- The robustness of the model with respect to changes in the model parameters is also investigated. (springer.com)
- We introduce novel means for estimating the robustness parameters and for statistical inference in this framework. (royalsocietypublishing.org)

###### characteristics

- Two recent parameter recovery schemes, an approach whereby characteristics of a statistical distribution are equated with attributes of a stand in order to solve for the parameters of the distribution, are described for the S B . The first scheme permits recovery of the range and both shape parameters, but the location parameter must be a priori specified. (usda.gov)
- This kind of systems present particular characteristics complicating their numerical treatment. (springer.com)
- LAA geometric parameters could be considered, coupled with the morphological characteristics, for a comprehensive evaluation of the regional blood stasis. (frontiersin.org)

###### differential

- Differential equation models are often used, but statistical inference for differential equations suffers from numerical challenges and poor agreement between observational data and deterministic models. (royalsocietypublishing.org)
- In addition, differential algebra can be used to show that different sets of measurement data were generated by the same system with the same identifiable set of parameters. (hindawi.com)
- A limited set of extensions of sparsity techniques to physical sciences and partial differential equations (PDEs) have also appeared recently, including numerical solution of PDEs with multiscale oscillatory solutions ( 6 ) and efficient materials models derived from quantum mechanics calculations ( 7 ). (pnas.org)

###### processes

- This work presents findings of both experimental and numerical modelling of flow processes taking place during and after CO2 injection. (bibsys.no)
- Dirichlet processes are also referred to as one-parameter Poisson-Dirichlet processes by Kingman [ 6 ]. (hindawi.com)
- As the first and foremost generalization of Dirichlet processes, two-parameter Poisson-Dirichlet processes (abbreviated as Poisson-Dirichlet process below) were first discussed by Pitman and Yor [ 7 ] and from then have made huge success in Bayesian nonparametric modeling in language, images, ecology, biology, genomics, and so on. (hindawi.com)

###### model

- Based on the existence and uniqueness of the weak solution of this system, the fixed solution problem of the parabolic equation is transformed into a parameter identification model, which takes K as the identification parameter, and the deviation of the simulated and measured DO as the performance index. (aimsciences.org)
- We prove the existence of the optimal parameter of the identification model, and derive the first order optimality conditions. (aimsciences.org)
- The second scheme is an all-parameter recovery model. (usda.gov)
- The existence of a parameter regime for which the model yields a non-decreasing plate layer thickness h ( t ) is identified numerically. (springer.com)
- But in many cases progress requires a model tailored to a specific situation with parameters estimated as accurately as possible. (royalsocietypublishing.org)
- Without any system identification or iterative numerical methods, this approach provides evidence that the equations of a model can represent measured and simulated sets of data. (hindawi.com)
- The advantage of this method is the decoupling of the validation of the mathematical model structure from the validation of the numerical, maybe physical, parameters of the system. (hindawi.com)
- Using a reduced model for the compression of the gas diffusion layer, the influence of the compression on the parameter values is studied. (asme.org)
- We review the use of asymptotic statistical theory and sensitivity analysis to obtain measures of uncertainty for estimates of the model parameters and the basic reproductive number ($R_0$)---an epidemiologically significant parameter grouping. (aimsciences.org)
- The extraction of the structural parameters from experimental data requires the fitting of a theoretical FF as a model function. (rsc.org)
- Only if a suitable fitting model is used, one gets reasonable values for the fit parameters. (rsc.org)
- Bifurcation analysis is used to describe the different types of complex spatio-temporal dynamics produced by the model in terms of several parameters and for different inputs. (springer.com)
- In order to do this, the model is operated in a parameter range where known physiological response properties are reproduced whilst also working close to bifurcation. (springer.com)

###### scheme

- The principal aim of this work is to provide an adapted numerical scheme for the approximation of elastic wave propagation in incompressible solids. (springer.com)

###### derive

- This work's main research objective is to develop theory and numerical methods that can systematically derive functions that span the energy spectrum of a given quantum-mechanical system and are nonzero only in a finite spatial region. (pnas.org)

###### methods

- Studies using (semi)numerical methods include the combined use of the finite difference and Laplace transform methods [ 8 ] and the parameter-group transformation followed by the Runge-Kutta shooting method [ 9 ]. (hindawi.com)
- A numerical comparison of the FIP and Semismooth-Newton methods is presented in Section 7. (scirp.org)
- Results have shown that these two test methods yield comparable values for the materials parameters. (springer.com)

###### flow

- Besides a detailed numerical approach together with convergence studies for the highly nonlinear free boundary problem, we also compare the induced flow field of the motile cell with that of classical squirmer models and identify the motile cell as a puller or pusher, depending on the strength of the myosin-actin interactions. (royalsocietypublishing.org)

###### estimates

- See table 1 for a summary of parameter estimates. (royalsocietypublishing.org)
- The numerical parameters are estimated by the method of maximum likelihood estimates and the density function is estimated by kernel method. (hindawi.com)

###### equations

- The details of the parameter recovery models, that is the system of equations with their concomitant constraints, are laid out. (usda.gov)
- One aspect concentrates on the rotational parametrization in order to get a simplified structure of the equations of motion and the second aspect focuses on the numerical time integration procedure in order to solve the system of equations in reasonable time also for industrial applications. (springer.com)
- Euler parameters as a special choice of quaternions are frequently used to define the orientation of the rigid bodies of a multibody system since the rotation matrix becomes quite simple in this case and the equations of motion are simplified. (springer.com)

###### regime

- We will here extend the approach to include also bending properties of a cell membrane, which, however, turns out to be of less relevance for the motility mode within the considered parameter regime. (royalsocietypublishing.org)

###### different

- In addition, the application of this approach to verification of the similarity between the identifiable parameters of two models with different sets of input and output measurements is demonstrated. (hindawi.com)
- While you're building a worksheet, you have no trouble remembering that A24 , for example, is the Company Average Staff Salary, but after you've built several projects, you'll find that this parameter might be in different places on different worksheets. (chacocanyon.com)
- Hence, various numerical modeling strategies have been developed to investigate the influence of different mechanisms on the mechanical response of structural materials. (springer.com)
- Therefore, three different crystallographic orientations have been assigned to the matrix material for conducting a pertinent parameter study on the influence of host orientation on crack initiation and growth. (springer.com)
- To extend the scope of these models, it is increasingly desirable to calculate gas-side heat transfer and fuel consumption as a function of engine operating parameters in order to evaluate different ECU databases. (sae.org)
- Keep it simple - don't use too many different parameters. (osapublishing.org)

###### data

- The four-parameter S B distribution has seen widespread use in growth-and-yield modeling because it covers a broad spectrum of shapes, fitting both positively and negatively skewed data and bimodal configurations. (usda.gov)

###### analysis

- The scaling analysis showed importance of various parameters in the process of site characterisation for CO2 storage. (bibsys.no)
- Summary of the fundamental (i.e. not derived) numerical parameters in our analysis, together with estimated values. (royalsocietypublishing.org)

###### models

- We present a discussion on how the method can be used to find parameter deviations between any two models. (hindawi.com)
- Compared with frequentist statistics and classical Bayesian statistics, BNP provides highly flexible and robust models for infinite-dimensional parameter spaces. (hindawi.com)

###### several

- For each LAA we identified and computed several parameters describing its geometry. (frontiersin.org)

###### order

- Since numerical damping cannot be introduced with the Newmark family integrators unless the order of accuracy is decreased, Hilber, Hughes and Taylor [ 13 ] proposed the so-called HHT \(\alpha \) -method which can still maintain second order accuracy and stability. (springer.com)

###### material

- In this paper, we give a complete description of the process of determining two-phase material parameters for a gas diffusion layer: Starting from a 3D tomography image of the gas diffusion layer the distribution of gas and water phases is determined using the pore morphology method. (asme.org)
- We have identified three material parameters: (1) characteristic strength, representing short term strength, (2) brittleness parameter (or durability), and (3) Weibull shape parameter related to long-term reliability. (springer.com)

###### often

- In the numerous emulsions demonstrated one or more of these numerical parameters often far exceeded the stated requirements. (google.com)

###### costs

- Using these 3D phase distributions, we are able to determine permeability, diffusivity, and heat conductivity as a function of the saturation of the porous medium with comparatively low numerical costs. (asme.org)

###### structure

- Evolutionary programming - Similar to genetic programming, but the structure of the program is fixed and its numerical parameters are allowed to evolve. (wikipedia.org)
- and a primary structure parameter (PSP2) of from 4 to 7, and an overall Mw/Mn from 2.7 to 3.5 comprising from 2 to 5 weight % of one or more C 4-8 alpha olefin comonomers. (google.es)
- 2. The bimodal polyethylene composition according to claim 1 , having a primary structure parameter (PSP2) from 4 to 7. (google.es)

###### method

- This effect, which does not appear for Euler angles, can be even observed if the numerical damping parameter \(\alpha \) in the HHT method is set to zero. (springer.com)

###### Studies

- and show convergence studies for critical parameters. (royalsocietypublishing.org)

###### basic

- A threshold parameter (the basic reproductive virus number) is introduced, and in terms of it, the global stability of both two possible equilibrium states is established. (hindawi.com)

###### paper

- In this paper, we aim at estimating the unknown numerical parameters and the density of the base measure with independent and identically distributed (i.i.d.) groups of observations with a Poisson-Dirichlet process prior. (hindawi.com)

###### work

- If you give the parameter a name, and if you use that same name in all your work, it's easier for you to understand your projects. (chacocanyon.com)

###### Description

- However, in the classical versions, the use of these integration schemes have a very unfavorable impact on the Euler parameter description of rotational motions. (springer.com)

###### make

- Named parameters make it easier for you to transfer responsibility for project components from one individual or team to another. (chacocanyon.com)

###### special

- These parameters were determined by special protocols of creep and constant loading-rate (CLR) tests for a series of containerboards. (springer.com)

###### groups

- For a result to be included in the search result, is it required to fit all added including parameters (in at least one group) and not fit all parameters in one of the excluding groups. (diva-portal.org)