Results 31 to 40 of about 2,140,628 (292)

Difference Equations: Disconjugacy, Principal Solutions, Green's Functions, Complete Monotonicity [PDF]

Transactions of the American Mathematical Society, 1978
We find analogues of known results onnth order linear differential equations fornth order linear difference equations. These include the concept of disconjugacy, Pólya’s criterion for disconjugacy, Frobenius factorizations, generalized Sturm theorems, existence and properties of principal solutions, signs of Green’s functions, and completely monotone ...
openaire   +1 more source

Weakly Increasing Solutions of Equations with p-Mean Curvature Operator

Mathematics
Globally positive unbounded solutions, with zero derivative at infinity, are here considered for ordinary differential equations involving the generalized Euclidean mean curvature operator.
Zuzana Došlá, Mauro Marini, Serena Matucci   +2 more
doaj   +1 more source

Polyaxial strength criterion and closed-form solution for squeezing rock conditions

Journal of Rock Mechanics and Geotechnical Engineering, 2020
In this paper, a nonlinear strength criterion is proposed using the average of intermediate (σ2) and minor (σ3) principal stresses in place of σ3 in Ramamurthy (1994)'s strength criterion.
Rupesh Kumar Verma, Sarvesh Chandra
doaj   +1 more source

Structure of Spinning Particle Suggested by Gravity, Supergravity and Low Energy String Theory [PDF]

, 1999
The structure of spinning particle suggested by the rotating Kerr-Newman (black hole) solution, super-Kerr-Newman solution and the Kerr-Sen solution to low energy string theory is considered. Main peculiarities of the Kerr spinning particle are discussed:
A. Burinskii, A. Burinskii, A. Burinskii, A. Burinskii, A. Burinskii, A. Dabholkar, A. Sen, A. Ya. Burinskii, B. Carter, C. A. López, D. Ivanenko, E. T. Whittacker, G.C. Debney, S. Deser, V. Hamity, W. Israel   +15 more
core   +3 more sources

A quick screening approach for design of multi-principal element alloy with solid solution phase

Materials & Design, 2019
Multi-principal element alloys (MPEAs) have wide promising applications. However, the composition design of MPEAs is challenging due to their vast options and complexity.
Mingjie Zheng, Wenyi Ding, Weitao Cao, Shenyang Hu, Qunying Huang   +4 more
doaj   +1 more source

Antiprincipal solutions at infinity for symplectic systems on time scales

Electronic Journal of Qualitative Theory of Differential Equations, 2020
In this paper we introduce a new concept of antiprincipal solutions at infinity for symplectic systems on time scales. This concept complements the earlier notion of principal solutions at infinity for these systems by the second author and Šepitka ...
Iva Drimalova, Roman Simon Hilscher
doaj   +1 more source

Existence and Uniqueness of Solutions to a Nonlocal Equation with Monostable Nonlinearity

, 2011
Let $J \in C(\mathbb{R})$, $J\ge 0$, $\int_{\tiny$\mathbb{R}$} J = 1$ and consider the nonlocal diffusion operator $\mathcal{M}[u] = J \star u - u$. We study the equation $\mathcal{M} u + f(x,u) = 0$, $u \ge 0$, in $\mathbb{R}$, where $f$ is a KPP-type ...
Juan Dávila, Jérôme Coville, Kanel Y. I., Salomé Martínez, Schumacher K.   +4 more
core   +1 more source

Principal solutions of positive linear Hamiltonian systems [PDF]

Journal of the Australian Mathematical Society, 1976
AbstractThe Hamiltonian system Y′ = BY + CZ, Z′ = – AY – B*Z is considered where the coefficients are continuous on I = [a, ∞, C = C* ≧ 0, and A = A* ≦ 0. A solution (Y, Z) satisfying Y*Z = Z*Y is defined to be principal (coprincipal) provided that (i) Y−1 exists on I (Z−1 exists on I) and (ii) as t→∞ ( as t → ∞).
openaire   +2 more sources

Numerical solution of the Adriatic Sea principal tidal constituents [PDF]

, 2005
Primary goal of the present paper has been to incorporate data-derived harmonic constants into a complex dynamic model using a variant of variational data assimilation, with a view to improve prediction of 7 dominant tidal harmonics in the Adriatic Sea ...
Janeković, Ivica, Kuzmić, Milivoj
core   +2 more sources

Personalizing the Pediatric Hematology/Oncology Fellowship: Adapting Training for the Next Generation

Pediatric Blood &Cancer, EarlyView.
ABSTRACT The pediatric hematology‐oncology fellowship training curriculum has not substantially changed since its inception. The first year of training is clinically focused, and the second and third years are devoted to scholarship. However, this current structure leaves many fellows less competitive in the current job market, resulting in ...
Scott C. Borinstein, Melissa J. Rose, Scott Moerdler, Richard Ho   +3 more
wiley   +1 more source