Results 31 to 40 of about 142,726 (269)

Precision and systematic errors in global helioseismology mode fitting and inversions: Leveraging some 25 years of nearly uninterrupted observations

Frontiers in Astronomy and Space Sciences, 2023
We have on hand some 25 years of nearly uninterrupted high-quality and high-cadence global helioseismic data. The Global Oscillations Network Group (GONG) project has been producing science quality data since 1995, the Michelson Doppler Imager (MDI ...
Sylvain G. Korzennik
doaj   +1 more source

A hybrid ANN-PSO approach for self-tuning parameters of polycrystalline photovoltaic arrays

Scientific Reports
This paper introduces a novel, self-tuning equivalent circuit model for polycrystalline photovoltaic (PV) modules to overcome the accuracy limitations of conventional fixed-parameter models under dynamic climatic conditions.
Zouhir Boumous, Samira Boumous, Moussa Sedraoui, Mohcene Bechouat, Cyrus Wabuge Wekesa, Ramazan Ayaz   +5 more
doaj   +1 more source

A Novel Versatile Decoupling Structure and Expedited Inverse-Model-Based Re-Design Procedure for Compact Single-and Dual-Band MIMO Antennas

IEEE Access, 2021
Multiple-input multiple-output (MIMO) antennas are considered to be the key components of fifth generation (5G) mobile communications. One of the challenges pertinent to the design of highly integrated MIMO structures is to minimize the mutual coupling ...
Muhammad Abdullah, Slawomir Koziel
doaj   +1 more source

Phase Angle as an Early Functional Biomarker of Cancer‐Related Fatigue in Pediatric Oncology: A Prospective Longitudinal Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric cancer remains a leading cause of morbidity and mortality worldwide, particularly in low‐and middle‐income countries. Cancer treatment may impair nutritional status, alter body composition, and exacerbate cancer‐related fatigue (CRF).
Luís Carlos Lopes‐Junior, Luiz Claudio Barreto Silva Neto, Fabiano Kenji Haraguchi, Letícia Batista de Azevedo, Marcelo Brenner Nascimento Carlini, Raphael Manhães Pessanha, Mariana Rabello Laignier, Wesley Rocha Grippa, Tania Mara Lopes Bitti Bortolini, Gláucia Zouain‐Figueiredo, Regina Aparecida Garcia de Lima, Liliana Vasquez   +11 more
wiley   +1 more source

Efficient Optimization of a Regional Water Elevation Model With an Automatically Generated Adjoint

Journal of Advances in Modeling Earth Systems, 2023
Calibration of unknown model parameters is a common task in many ocean model applications. We present an adjoint‐based optimization of an unstructured mesh shallow water model for the Baltic Sea.
Tuomas Kärnä, Joseph G. Wallwork, Stephan C. Kramer   +2 more
doaj   +1 more source

Inverse modeling of resistivity and induced polarization data for Copper mineralization exploration in Chahshen area, east of Miami, Semnan

Journal of Economic Geology, 2023
In recent decades, various methods have been developed for mineral exploration. Geophysical methods are one example, which have seen significant development in recent years and have become a common approach in the field of mining exploration ...
Hossein Riahipour, Alireza Arab-Amiri, Fereydoun Sharifi   +2 more
doaj   +1 more source

Correlation, Independance and Inverse Modeling [PDF]

, 2008
Learning from examples has a wide number of forms depending on what is to be learned from which available information. One of these form is y = f( x ) where the input-output pair ( x , y ) is the available information and frepresents the process mapping ${\bf x}\in\cal X$ to ${\bf y}\in\cal Y$.
openaire   +1 more source

MATHEMATICAL MODELS FOR CHROMOSOMAL INVERSIONS [PDF]

Genetics, 1967
INCE a formal characterization of the nature of inversions has not been made to date, this paper will hypothesize mathematical models for the occurrence of inversions of various lengths, obtain the associated probability distributions of lengths and midpoints of chromosomal inversions, and compare the hypothesized models with two sets of data.
W T, Federer, R G, Steel, B, Wallace
openaire   +2 more sources

Serum Myonectin Levels Are Positively Associated With Physical Function and Lower Frailty‐Related Limitation in Maintenance Hemodialysis Patients: A Cross‐Sectional Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Maintenance hemodialysis (MHD) patients frequently suffer from frailty, characterized by reduced physical function and poor prognosis. Myokines, such as myonectin, secreted by muscle, are emerging regulators of systemic health. This study investigated the relationship between serum myonectin, adipokines (adiponectin, omentin), and ...
Kenichi Kono, Yoshifumi Moriyama, Koji Ohashi, Naoya Otaka, Minako Tatsumi, Toyoaki Murohara, Noriyuki Ouchi, Satoru Oshima   +7 more
wiley   +1 more source

A State-of-the-Art Survey on Advanced Electromagnetic Design: A Machine-Learning Perspective

IEEE Open Journal of Antennas and Propagation
Research on electromagnetic (EM) components is essential to enabling the design and optimization of such devices as antennas and filters, leading to improved functionality, reduced costs, and enhanced overall performance.
Masoud Salmani Arani, Reza Shahidi, Lihong Zhang   +2 more
doaj   +1 more source