Results 31 to 40 of about 328,225 (327)

Different Groups of Variational Principles for Whitham-Broer-‎Kaup Equations in Shallow Water [PDF]

Journal of Applied and Computational Mechanics, 2020
Because the variational theory is the theoretical basis for many kinds of analytical or numerical methods, it is an essential but difficult task to seek explicit functional formulations whose extrema are sought by the nonlinear and complex models. By the
Xiao-Qun Cao, Ya-Nan Guo, Cheng-Zhuo Zhang, Shi-Cheng Hou, Ke-Cheng Peng   +4 more
doaj   +1 more source

Low-temperature excitations within the Bethe approximation [PDF]

, 2013
We propose the variational quantum cavity method to construct a minimal energy subspace of wave vectors that are used to obtain some upper bounds for the energy cost of the low-temperature excitations. Given a trial wave function we use the cavity method
Biazzo, I., Ramezanpour, A.
core   +2 more sources

‎Exact analytical solution of tempered fractional heat-like (diffusion) equations by the modified variational iteration method [PDF]

Journal of Mahani Mathematical Research
‎    This paper introduces a modified version of the Variational Iteration Method, incorporating $\mathbb{P}$-transformation. We propose a novel semi-analytical technique named the modified variational iteration method   for addressing fractional ...
Mohammad Hossein Akrami, Abbas Poya, Mohammad Ali Zirak   +2 more
doaj   +1 more source

An Application of He's Variational Iteration Method for Solving Duffing - Van Der Pol Equation [PDF]

Al-Rafidain Journal of Computer Sciences and Mathematics, 2013
In this paper, we apply He's variational iteration method (VIM) and the Adomian decomposition method (ADM) to approximate the solution of Duffing-Van Der Pol equation (DVP).
Ann Al-Sawoor, Merna Samarchi
doaj   +1 more source

Performance comparison between maximum likelihood estimation and variational method for estimating simple linear regression parameter [PDF]

ITM Web of Conferences
Variational estimation method is a deterministic approximation technique which involves Bayesian framework while giving a point estimate instead of the usual Bayesian interval estimation. The linear regression model, which has always been a popular model,
Widyaningsih Yekti, Rizka Hakiim Nur, Siswantining Titin   +2 more
doaj   +1 more source

A field theoretic approach to master equations and a variational method beyond the Poisson ansatz

, 2007
We develop a variational scheme in a field theoretic approach to a stochastic process. While various stochastic processes can be expressed using master equations, in general it is difficult to solve the master equations exactly, and it is also hard to ...
Dickman R, Dickman R, Doi M, Doi M, Droz M, Gardiner C W, Jun Ohkubo, Ohkubo J, Risken H, Stilck J F, Täuber U C   +10 more
core   +1 more source

Variational Calculation for the Equation of State of Nuclear Matter at Finite Temperatures [PDF]

, 2007
An equation of state (EOS) for uniform nuclear matter is constructed at zero and finite temperatures with the variational method starting from the realistic nuclear Hamiltonian composed of the Argonne V18 and UIX potentials.
Akmal, Clark, Emery, Feenberg, Friedman, H. Kanzawa, K. Oyamatsu, K. Sumiyoshi, Lattimer, M. Takano, Mayer, Modarres, Nishizaki, Pandharipande, Pudliner, Schmidt, Shen, Shen, Sumiyoshi, Sumiyoshi, Wiringa   +20 more
core   +2 more sources

Variational Homotopy Perturbation Method for Solving Fractional Initial Boundary Value Problems

Abstract and Applied Analysis, 2012
A variational homotopy perturbation method (VHPM) which is based on variational iteration method and homotopy perturbation method is applied to solve the approximate solution of the fractional initial boundary value problems.
Yanqin Liu
doaj   +1 more source

Solution to the 3-Loop $\Phi$-Derivable Approximation for Massless Scalar Thermodynamics [PDF]

, 2001
We develop a systematic method for solving the 3-loop $\Phi$-derivable approximation to the thermodynamics of the massless $\phi^4$ field theory. The method involves expanding sum-integrals in powers of $g^2$ and m/T, where g is the coupling constant, m ...
A. Peshier, A. Peshier, B. Kastening, B. Vanderheyden, C. Coriano, E. Braaten, E. Braaten, E. Braaten, E. Braaten, Emmanuel Petitgirard, Eric Braaten, F. Karsch, G. Baym, H. Kleinert, H. Kleinert, J. Berges, J. M. Cornwall, J. M. Luttinger, J. O. Andersen, J. O. Andersen, J. O. Andersen, J. O. Andersen, J. P. Blaizot, J. P. Blaizot, J. P. Blaizot, P. Arnold, P. Arnold, R. R. Parwani, R. R. Parwani, R. R. Parwani, R. R. Parwani, Y. B. Ivanov   +31 more
core   +2 more sources

Psychosocial Outcomes in Patients With Endocrine Tumor Syndromes: A Systematic Review

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction The combination of disease manifestations, the familial burden, and varying penetrance of endocrine tumor syndromes (ETSs) is unique. This review aimed to portray and summarize available data on psychosocial outcomes in patients with ETSs and explore gaps and opportunities for future research and care.
Daniël Zwerus, Floortje Strobbe, Annemarie A. Verrijn Stuart, Hanneke M. van Santen, Gerlof D. Valk, Sasja A. Schepers, Rachel S. van Leeuwaarde   +6 more
wiley   +1 more source