Results 31 to 40 of about 1,977,043 (275)

Partial Derivatives Estimation of Multivariate Variance Function in Heteroscedastic Model via Wavelet Method

Axioms
For derivative function estimation, conventional research only focuses on the derivative estimation of one-dimensional functions. This paper considers partial derivatives estimation of a multivariate variance function in a heteroscedastic model.
Junke Kou, Hao Zhang
doaj   +1 more source

Depth-Extrapolation-Based True-Amplitude Full-Wave-Equation Migration from Topography

Applied Sciences, 2021
The lack of an initial condition is one of the major challenges in full-wave-equation depth extrapolation. This initial condition is the vertical partial derivative of the surface wavefield and cannot be provided by the conventional seismic acquisition ...
Hao Liu, Xuewei Liu
doaj   +1 more source

Partial derivative of matrix functions with respect to a vector variable

Vietnam Journal of Mechanics, 2008
The partial derivatives of scalar functions and vector functions with respect to a vector variable are defined and used in dynamics of multibody systems.
Nguyen Van Khang
doaj   +1 more source

Multiparameter Estimation of PMSM Combining Mechanical and Electrical Models with Nonlinear Saturated Inductance and Voltage Fitting

CES Transactions on Electrical Machines and Systems
In this paper, a precise and computationally efficient method for estimating multiparameter of permanent magnet synchronous motors (PMSMs) is proposed.
Lupeng Yang, Yuting Lu, Guodong Feng, Yu Han   +3 more
doaj   +1 more source

Dominating polynomial in power series expansion for analytic functions in a complete Reinhardt domain

Математичні Студії
We generalized some criteria of boundedness of $\mathbf{L}$-index in joint variables for analytic functions in a complete multiple circular domain, where $\mathbf{L}(z)=(l_1(z_1,z_2,\ldots,z_n),$ $l_{2}(z_1,z_2,\ldots,z_n),$ $\ldots,$ $l_{n}(z_1,z_2 ...
A. I. Bandura, T.M. Salo
doaj   +1 more source

Application of Natural Generalized-Laplace Transform and Its Properties

Mathematics
In this work, we combine the Natural Transform and generalized-Laplace Transform into a new transform called, the Natural Generalized-Laplace Transform, (NGLT) and some of its properties are provided.
Hassan Eltayeb
doaj   +1 more source

Bridging the Loneliness Gap: Depression, Connectivity, and Isolation in Pediatric Oncology Patients and Their Peers

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Loneliness is associated with adverse physical and mental health outcomes and remains understudied in children and adolescents undergoing cancer therapy. Pediatric oncology patients may be at increased risk due to medical isolation and disruption of social networks.
Charlotte N. Stahlfeld, Scott H. Maurer, Michelle D. Watkinson, John Nury, Elise Barberis, Molly C. Mack   +5 more
wiley   +1 more source

Lie symmetry analysis of (2+1)-dimensional time fractional Kadomtsev-Petviashvili equation [PDF]

Open Communications in Nonlinear Mathematical Physics
In this paper, Lie symmetry analysis method is applied to the (2+1)-dimensional time fractional Kadomtsev-Petviashvili (KP) equation with the mixed derivative of Riemann-Liouville time-fractional derivative and integer-order $x$-derivative.
Jicheng Yu, Yuqiang Feng
doaj   +1 more source

Early Body Mass Index z‐Score Change and Resolution of Severe Malnutrition in Children With Sickle Cell Anemia in a Low‐Income Setting: A Prospective Single‐Arm Extension Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell anemia (SCA) in low‐income settings are at risk of severe malnutrition, but optimal nutritional management has not been established. We evaluated an intensified ready‐to‐use therapeutic food (RUTF) regimen in children with persistent severe malnutrition after initial treatment and assessed whether early ...
Safiya Gambo, Shehu Umar Abdullahi, Hassan Adam Murtala, Halima Kabir, Khadija A. Shamsu, Sari A. Acra, Virginia A. Stallings, Mark Rodeghier, Michael R. DeBaun, Lauren J. Klein   +9 more
wiley   +1 more source

HYBRIDIZATION OF SHEHU TRANSFORM AND VARIATIONAL ITERATION METHOD FOR SOLUTION OF FRACTIONAL ORDER PARTIAL VOLTERRA INTEGRO-DIFFERENTIAL EQUATIONS

Academy Journal of Science and Engineering
This paper presents a method of solution to a class of fractional order Volterra integro-   differential equations which are at the same time nonlinear. To effectively model some physical phenomena in mathematical physics, both integral and differential ...
Babatunde Morufu Yisa, Muhammed Olayemi Osayemi   +1 more
doaj   +1 more source