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initial guess

Initial guess generation strategies for spaceplane trajectory optimisation

Initial guess generation strategies for spaceplane trajectory optimisation

... Trajectory optimisation for spaceplanes is a highly constrained problem due to long integration times, high energy environment and a broad spectrum of different flight conditions from sea level to above the Karman line. ...

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Multi Objective Constrained Optimization using Discrete Mechanics and NSGA II Approach

Multi Objective Constrained Optimization using Discrete Mechanics and NSGA II Approach

... in one single simulation run due to their population-approach. EAs are ideal for solving multi-objective optimization problems. Although there exist a number of multi-objective evolutionary algorithms (EMO), ...

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Analytical Approximations for the Critical Stock Prices of American Options: A Performance Comparison

Analytical Approximations for the Critical Stock Prices of American Options: A Performance Comparison

... the initial guess ( IG ) and the quadratic approximation ( QD ) in Barone-Adesi and Whaley (1987), the refined quadratic approximation ( BE ) in Barone-Adesi and Elliott (1991), the lower bound ( LB ) in ...

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Convergence comparison and stability of Jungck-Kirk-type algorithms for common fixed point problems

Convergence comparison and stability of Jungck-Kirk-type algorithms for common fixed point problems

... For initial guess nearer to the common fixed point, the number of iterations de- creases in case of Jungck-Kirk-Noor, Jungck-Kirk-Ishikawa and Jungck-Kirk-Mann iter- ative schemes, while Jungck-Kirk-SP as ...

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Optimal Design for Parameter Estimation in EEG Problems in a 3D Multilayered Domain

Optimal Design for Parameter Estimation in EEG Problems in a 3D Multilayered Domain

... Real parameter value Initial guess value Confidence intervals (No optimal design) Confidence intervals (D-optimal design).. Figure 15: Results for noisy realizations with σ = 0.2 using D[r] ...

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Reliability Function Estimator with Exponential Failure Model for Engineering Data

Reliability Function Estimator with Exponential Failure Model for Engineering Data

... In many practical circumstances, physical experts have some prior information regarding the value of θ due to past experiences, and apply it latently to inference of the actual model. However, in certain situations the ...

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Optimal solar sail interplanetary heteroclinic transfers for novel space applications

Optimal solar sail interplanetary heteroclinic transfers for novel space applications

... the initial guess, the fully controllable solar sail ...the initial guess and the fully controllable sail can be attributed to the fact that the initial guess considered coasting ...

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Computation of hyperbolic trajectories and their stable and unstable manifolds for oceanographic flows represented as data sets

Computation of hyperbolic trajectories and their stable and unstable manifolds for oceanographic flows represented as data sets

... the initial guess: on the western boundary we have two coexisting ISPs for a time, while on the eastern boundary there is a time in- terval for which the flow has no ...an initial guess (green ...

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Efficient steady-state solution techniques for variably saturated groundwater flow

Efficient steady-state solution techniques for variably saturated groundwater flow<

... the initial guess [29, 8]. This approach performs an initial number of iterations for eqn (34) using the Picard approx- imation for J and then switches to a Newton update with the full Jacobian [29, ...

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S iteration process for quasi contractive mappings

S iteration process for quasi contractive mappings

... Taking initial guess x = . nearer to the fixed point, the Picard process never converges oscillates between  and , the Mann process converges in  iterations, the Ishikawa process c[r] ...

15

Stabilised approximation of interior-layer solutions of a singularly perturbed semilinear reaction-diffusion problem

Stabilised approximation of interior-layer solutions of a singularly perturbed semilinear reaction-diffusion problem

... A standard 3-point difference scheme—see (4.2) below—on an equidistant mesh and on an appropriate Shishkin mesh, each having N intervals, yielded the unstable solutions shown in Figure 2.1. Here Newton’s method, with ...

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A novel approach to the analysis of human growth

A novel approach to the analysis of human growth

... an initial guess of the model, the parameters relative to the growth of the normal boys (Table 2, U1 + F1), in order to forecast the further growth of the ...

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A deep learning-based approach for localization of pedicle regions in preoperative CT scans

A deep learning-based approach for localization of pedicle regions in preoperative CT scans

... By being able to automatically identify the pedicle areas in a spinal CT image, this algorithm can provide a reliable initial guess for the 2D-3D registration process we are using in our intraoperative ...

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The_Formation_of_the_Galactic_Bar_and_Spiral_Arms_in_a_Stellar_Disc_in_Cylindrical_Coordinates.pdf

The_Formation_of_the_Galactic_Bar_and_Spiral_Arms_in_a_Stellar_Disc_in_Cylindrical_Coordinates.pdf

... an initial guess for the surface density of the stars and obtain the corresponding rotation curve by solving equation (27) and the stellar self-gravity via 1D logarithmic spiral method discussed ...the ...

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Dynamical inference of hidden biological populations

Dynamical inference of hidden biological populations

... The initial values of the model parameters are drawn using uniform distributions from intervals (see Table 4) that overlap with and extend the field-study-based estimations of ecological parameters shown in Table ...

13

Optimized Schwarz methods for curl-curl time-harmonic Maxwell's equations

Optimized Schwarz methods for curl-curl time-harmonic Maxwell's equations

... random initial guess, and in parentheses with the TEM mode as an excitation and a zero initial ...zero initial guess requires much less iterations than when all modes are ...

8

Challenges in Well Testing Data from Multi-layered Reservoirs and Improving Nonlinear Regression: A Gas filed case

Challenges in Well Testing Data from Multi-layered Reservoirs and Improving Nonlinear Regression: A Gas filed case

... We face two choices of Log-Log and simulation (History matching), which first one is based on comparing the results with pressure derivative, and the second one is to conform production history and pattern plot pressure ...

14

Phaseless spherical near-field antenna measurements for low and medium gain antennas

Phaseless spherical near-field antenna measurements for low and medium gain antennas

... second initial guess shows a much better per- formance than the first ...the initial guess Q IG employing the aperture phase distribution and demonstrates, how the far-field pattern is finally ...

6

Inverse streamflow routing

Inverse streamflow routing

... than others (e.g., day 177). In other words, the inversion also recovers a reasonable timing of the runoff. Figure 5 (bot- tom row) also shows the 7-day mean antecedent precipita- tion for those 4 days, and most of the ...

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Scheme for calculation of multi-layer cloudiness and precipitation for climate models of intermediate complexity

Scheme for calculation of multi-layer cloudiness and precipitation for climate models of intermediate complexity

... Total cloud fractions (fraction) averaged over the Northern and Southern Hemispheres ( a and b respectively) for the model with initial guess and calibrated parameter sets (gray and blac[r] ...

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