Results 31 to 40 of about 179,091 (292)
Minimal Curvature Trajectories: Riemannian Geometry Concepts for Model Reduction in Chemical Kinetics [PDF]
, 2009 In dissipative ordinary differential equation systems different time scales cause anisotropic phase volume contraction along solution trajectories. Model reduction methods exploit this for simplifying chemical kinetics via a time scale separation into ...
Lebiedz, Dirk +2 more
core +2 more sources
Enlarging the domain of convergence for multiple shooting by the homotopy method [PDF]
Numerische Mathematik, 1980 The homotopy method is a frequently used technique in overcoming the local convergence nature of multiple shooting. In this paper sufficient conditions are given that guarantee the homotopy process to be feasible. The results are applicable to a class of two-point boundary value problems.
openaire +2 more sources
Three-Step Block Method for Solving Nonlinear Boundary Value Problems
Abstract and Applied Analysis, 2014 We propose a three-step block method of Adam’s type to solve nonlinear second-order two-point boundary value problems of Dirichlet type and Neumann type directly.
Phang Pei See +2 more
doaj +1 more source
Agile Product Testing with Constrained Prototypes [PDF]
, 1999 The means to acquire reliable functional information is a critical factor that differentiates product development time and cost. Thanks to advances in solid freeform fabrication techniques, industries can produce geometrically complex parts within ...
Cho, Uichung +2 more
core +1 more source
Global optimal control with the direct multiple shooting method
Optimal Control Applications and Methods, 2017 SummaryWe propose to solve global optimal control problems with a new algorithm that is based on Bock's direct multiple shooting method. We provide conditions and numerical evidence for a significant overall runtime reduction compared to the standard single shooting approach.
H. Diedam, S. Sager
openaire +4 more sources
Optimization and Analysis on Trajectory with Multiple Constraints for Hypersonic Air-vehicle
MATEC Web of Conferences, 2015 The trajectory optimization technology is one of the key technologies for hypersonic air-vehicle. There are multiple constraints in the process of hypersonic flight, such as uncertainty of flight environment, thermal current, dynamic pressure and ...
Wei Changzhu +3 more
doaj +1 more source
Investigating Multiple Solutions in the Constrained Minimal Supersymmetric Standard Model
, 2014 Recent work has shown that the Constrained Minimal Supersymmetric Standard Model (CMSSM) can possess several distinct solutions for certain values of its parameters.
Allanach, B. C. +2 more
core +1 more source
The Ray Bundle method for calculating weak magnification by gravitational lenses [PDF]
, 1998 We present here an alternative method for calculating magnifications in gravitational lensing calculations -- the Ray Bundle method. We provide a detailed comparison between the distribution of magnifications obtained compared with analytic results and ...
C. J. Fluke +24 more
core +3 more sources
Molecular Oncology, EarlyView.Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen +11 more
wiley +1 more source
Quicksilver: Fast Predictive Image Registration - a Deep Learning Approach [PDF]
, 2017 This paper introduces Quicksilver, a fast deformable image registration method. Quicksilver registration for image-pairs works by patch-wise prediction of a deformation model based directly on image appearance.
Kwitt, Roland +3 more
core +3 more sources