Results 81 to 90 of about 384,312 (331)

A New Log-Logistic Lifetime Model with Mathematical Properties, Copula, Modified Goodness-of-Fit Test for Validation and Real Data Modeling

Mathematics, 2020
After defining a new log-logistic model and studying its properties, some new bivariate type versions using “Farlie-Gumbel-Morgenstern Copula”, “modified Farlie-Gumbel-Morgenstern Copula”, “Clayton Copula”, and “Renyi’s entropy Copula” are derived. Then,
Mahmoud M. Mansour, Mohamed Ibrahim, Khaoula Aidi, Nadeem Shafique Butt, Mir Masoom Ali, Haitham M. Yousof, Mohamed S. Hamed   +6 more
doaj   +1 more source

Design of Single‐Atom Catalysts Anchored in N‐Doped Biphenylene Using Symbolic Regression for Electrocatalytic Nitrate Reduction to Ammonia

Advanced Science, EarlyView.
A high‐throughput in silico calculations for NO3RR based on transition metal doped and nitrogen decorated biphenylene network are performed. A symbolic regression is designed to capture the hidden descriptors of NO3RR for hyper dimensional system entailing large geometric variability.
Zheng Shu, Zhangsheng Shi, Huaxian Jia, Huifang Xu, Zian Xu, Zhongheng Li, Man‐Fai Ng, Teck Leong Tan, Fuqiang Huang, Yongqing Cai   +9 more
wiley   +1 more source

Taylor expansions of R-transforms, application to supports and moments

, 2006
We prove that a probability measure on the real line has a moment of order p (even integer), if and only if its R-transform admits a Taylor expansion with p terms. We also prove a weaker version of this result when p is odd.
Benaych-Georges, Florent
core   +2 more sources

Diffusion‐MRI‐Based Estimation of Cortical Architecture via Machine Learning (DECAM) in Primate Brains

Advanced Science, EarlyView.
We present Diffusion‐MRI‐based Estimation of Cortical Architecture via Machine Learning (DECAM), a deep‐learning framework for estimating primate brain cortical architecture optimized with best response constraint and cortical label vectors. Trained using macaque brain high‐resolution multi‐shell dMRI and histology data, DECAM generates high‐fidelity ...
Tianjia Zhu, Minhui Ouyang, Shufang Tan, Jianlin Guo, Ziqin Zhang, Xuan Liu, Risheng Liu, Hao Huang   +7 more
wiley   +1 more source

Peningkatan Critical Thinking dan Collaborative Skill Matematika melalui Model Group Investigation Berbantuan Magic Ball

JP (Jurnal Pendidikan), 2018
Permasalahan dalam proses pembelajaran matematika di SD Negeri Panjang 03 Ambarawa adalah bahwa keterampilan Critical Thinking dan Collaborative masih rendah dan berdampak pada hasil belajar siswa yang belum memuaskan.
Keke Citra Wahyu Avisca, Mawardi Mawardi, Suhandi Astuti   +2 more
doaj   +1 more source

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

Advanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang, Xinyuan Ke, Andrew Heath, Richard J. Ball, Jiawei Xie, Jinchen Fan, Guisheng Li, Kevin Paine   +7 more
wiley   +1 more source

Mathematical Modeling and teachers’ formation: a discussion on mathematical knowledge for teaching

Revista de Educação Matemática, 2019
This study discusses the utilization of Mathematical Modeling for the continuing professional development of Mathematics teachers in the early years of primary school based on studies and investigations by Ball and her collaborators, in which they ...
Rogério Marques Ribeiro, Arthur Belford Powell   +1 more
doaj   +1 more source

Dynamical Systems, Stability, and Chaos

, 2007
In this expository and resources chapter we review selected aspects of the mathematics of dynamical systems, stability, and chaos, within a historical framework that draws together two threads of its early development: celestial mechanics and control ...
Ball, R., Holmes, P.
core   +2 more sources

Passivation‐Induced Species Dynamics and Microstructural Evolution in Solid‐State Lithium–Sulfur Cathodes

Advanced Science, EarlyView.
The formation of insulating Li2S during discharge in solid‐state lithium–sulfur batteries passivate reaction sites and limits sulfur utilization. In this work, a microstructure‐resolved modeling framework coupling transport and reaction kinetics is developed to predict charge–discharge behavior and reveal particle‐scale species evolution and incomplete
Arpan K. Sharma, Bairav S. Vishnugopi, Elif Pınar Alsaç, Matthew T. McDowell, Partha P. Mukherjee   +4 more
wiley   +1 more source

Designing Probability Learning with Volleyball Context through a Problem-Based Learning Approach in Vocational Schools

Journal of Mathematics Instruction, Social Research and Opinion
This study is based on the importance of applied, contextual, and relevant mathematics learning that meets the needs of the workplace and entrepreneurship.
Dini Pujiani, Kiki Nia Sania Effendi
doaj   +1 more source