Results 101 to 110 of about 385,673 (291)

A new modified estimator of population variance in calibrated survey sampling

open access: yesScientific Reports
In survey statistics, estimating and reducing population variation is crucial. These variations can occur in any sampling design, including stratified random sampling, where stratum weights may increase the variance of estimators. Calibration techniques,
Riffat Jabeen   +4 more
doaj   +1 more source

Etnomatematika Permainan Tradisional Congklak Sebagai Penerapan Konsep Matematika

open access: yesJurnal Inovasi Pendidikan dan Sains
Ethnomathematics plays an important role in improving mathematics learning because it connects mathematical concepts with students' experiences in everyday life related to local arts and culture.
Windi Astuti, Sri Tirto Madawistama
doaj   +1 more source

A History of mathematics and the previous knowledge of teachers as grants for planning a course on geometry ball and hyperbolic

open access: yesAmazônia, 2014
The aim of this research was to study how the historical development of mathematics, with the backdrop of the evolution of geometry, can assist in the continuing education of mathematics’ teachers.
Wanderley Pivatto Brum
doaj   +1 more source

Exposing the work of the market through the case of Alternative Provision for English school students

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Pupils in England who, for some reason, are not able to attend school often find themselves in Alternative Provision (AP). These are special arrangements designed to address their specific needs and help them return to mainstream schooling.
Nick Pratt   +2 more
wiley   +1 more source

Investor Perception of ESG in Earnings Calls

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study examines how the communicator's role and the framing of ESG statements affect investor capital allocation in the context of earnings calls. Based on a virtual asset market experiment, the analysis identifies that the assurance and reinforcement of ESG messages have a positive effect of up to 8% on capital allocation, with especially
Felix Bachner
wiley   +1 more source

Advancing Upcycling and Regeneration of Spent LiFePO4: Failure Mechanisms and Recovery Strategies

open access: yesCarbon Energy, EarlyView.
This review studies the failure mechanism to promote the upcycling regeneration of spent lithium iron phosphate (S‐LFP). It first summarizes the failure mechanisms of LFP batteries revealed via advanced characterization technologies and then explores the respective advantages and challenges of hydrometallurgy and direct regeneration methods.
Yi Wang   +6 more
wiley   +1 more source

Bulk metric reconstruction from entanglement data via minimal surface area variations

open access: yesJournal of High Energy Physics
We investigate the reconstruction of asymptotically anti-de Sitter (AdS) bulk geometries from boundary entanglement entropy data for ball-shaped entangling regions.
Niko Jokela   +3 more
doaj   +1 more source

High‐Energy‐Density Redox Flow Batteries: Mechanisms, Design Strategies, and Recent Progress

open access: yesChemistry – A European Journal, EarlyView.
ABSTRACT The inherent intermittency of energy sources such as solar and wind power hinders the transition to renewable energy, necessitating advanced energy storage solutions. Enhancing energy density is crucial for lowering system costs and enabling large‐scale deployment.
Xiaolian Zhao   +8 more
wiley   +1 more source

Calix[4]arene Design for Enhanced Carbon Capture via Topological Learning

open access: yesChemistry – A European Journal, EarlyView.
ABSTRACT Solid direct air capture (S‐DAC) technologies have the potential to remove pre‐existing CO2 from the atmosphere by taking advantage of hydrophobic materials that will retain CO2 through physisorption and separating it from the abundant water molecules. Calix[n]arenes are highly tunable and versatile complexes with inherent hydrophobic cavities,
Jeffrey A. Laub   +1 more
wiley   +1 more source

Optimal model‐based design of experiments for parameter precision: Supercritical extraction case

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study investigates the process of chamomile oil extraction from flowers. A parameter‐distributed model consisting of a set of partial differential equations is used to describe the governing mass transfer phenomena in a cylindrical packed bed with solid chamomile particles under supercritical conditions using carbon dioxide as a solvent ...
Oliwer Sliczniuk, Pekka Oinas
wiley   +1 more source

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