Results 81 to 90 of about 1,153,153 (275)

Have Gender Gaps in Math Closed? Achievement, Teacher Perceptions, and Learning Behaviors Across Two ECLS-K Cohorts

AERA Open, 2016
Studies using data from the Early Childhood Longitudinal Study–Kindergarten Class of 1998–1999 (ECLS-K:1999) revealed gender gaps in mathematics achievement and teacher perceptions.
Joseph R. Cimpian, Sarah T. Lubienski, Jennifer D. Timmer, Martha B. Makowski, Emily K. Miller   +4 more
doaj   +1 more source

CO2 Reduction on Copper‐Nitrogen‐Doped Carbon Catalysts Tuned by Pulsed Potential Electrolysis: Effect of Pulse Potential

Advanced Functional Materials, EarlyView.
This study demonstrates that pulsed potential electrolysis significantly improves CO2 reduction performance on copper‐nitrogen doped carbon electrodes. The formation of cationic copper sites and metallic clusters as a function of applied intermittent potential leads to notable selectivity changes compared to potentiostatic reduction.
Dorottya Hursán, Janis Timoshenko, Andrea Martini, Hyo Sang Jeon, Eduardo Ortega, Martina Rüscher, Arno Bergmann, Aram Yoon, Uta Hejral, Antonia Herzog, Clara Rettenmaier, Felix T. Haase, Philipp Grosse, Beatriz Roldan Cuenya   +13 more
wiley   +1 more source

The mechanism behind probability [PDF]

Changes within observable reality at the lowest level of reality seem to occur in accordance with the probability theory in mathematics. It is quite remarkable that nature itself has chosen the probability theory to arrange all the changes within the ...
Grimm, Sydney Ernest
core  

Operation State Evaluation of Distribution Network Based on Attribute Mathematics

Zhongguo dianli, 2019
With the development of social economy, it is urgent to realize self-healing control of distribution network to meet the increasing demand of electricity users on distribution network.
Jianyong HUANG, Qibin MENG, Shunchao WU, Hui SHI, Shushu MA   +4 more
doaj   +1 more source

Description of a mathematical model of the distribution of rock mass from the face to the receiving point on the deep horizons of the quarry

, 2021
R. Sh. Naimova, Sh. Mavlonov, Н.Б. Юсупов, Sh Karimov   +3 more
openalex   +1 more source

Defect‐Mediated Scintillation in Fully Inorganic Perovskites via Water‐Induced 0D/3D Phase Modulation

Advanced Functional Materials, EarlyView.
A reproducible synthesis to control 3D/0D phase ratios via water‐tuned solvent–antisolvent methods is presented. Enhanced scintillation yield and ultrafast decay are achieved. Defect‐driven emission mechanisms are revealed through cathodoluminescence and radioluminescence, shedding light on the underexplored role of the 0D Cs4PbBr6 and mixed 0D/3D ...
Mario Calora, Francesco Carulli, Nadir Vanni, Antonella Giuri, Elena Ferrari, Matteo Masino, Laura Lazzarini, Francesca Rossi, Gianluca Accorsi, Anna Moliterni, Davide Altamura, Cinzia Giannini, Luca Cappelletti, Gianluca Quarta, Alberto Quaranta, Rosanna Mastria, Anna Paola Caricato, Sergio Brovelli, Aurora Rizzo   +18 more
wiley   +1 more source

Calculating Value-at-Risk contributions in CreditRisk+

, 2001
Credit Suisse First Boston (CSFB) launched in 1997 the model CreditRisk+ which aims at calculating the loss distribution of a credit portfolio on the basis of a methodology from actuarial mathematics.
Haaf, Hermann, Tasche, Dirk
core   +1 more source

Mapping research on Indonesia’s government mathematics textbooks: current insights and potential directions

Cogent Education
Education policy must prioritize research-driven mathematics textbook development to ensure rigorous alignment with curriculum reforms. The purpose of this study was to investigate research trends on Indonesian Government Provided (IGP) mathematics ...
Dyana Wijayanti, Ahmad Lutfi, Tommy Tanu Wijaya, Ousman Bah   +3 more
doaj   +1 more source

An Ultra‐Robust Memristor Based on Vertically Aligned Nanocomposite with Highly Defective Vertical Channels for Neuromorphic Computing

Advanced Functional Materials, EarlyView.
An ultra‐robust memristor based on SrTiO3‐CeO2 (S‐C) vertically aligned nanocomposite (VAN) achieving exceptional endurance of 1012 switching cycles via interface engineering. Artificial neural networks (ANNs) integrated with S‐C VAN memristors exhibit high training accuracy across multiple datasets.
Zedong Hu, Hongyi Dou, Jeremy B. Gan, Cun Li, Xuanyu Sheng, Juanjuan Lu, Abhijeet Choudhury, Jialong Huang, Yizhi Zhang, Zhongxia Shang, Ye Cao, Xinghang Zhang, Haiyan Wang   +12 more
wiley   +1 more source

Gender Equity in Mathematics Achievement in East African Primary Schools: Context Counts [PDF]

Although primary school enrollment is gradually on the increase in the developing world, differences in mathematics achievement between girls and boys persist. A complex combination of factors that is related to issues of the home environment, the school
Tia L. Zuze, Valerie E. Lee
core   +1 more source