Results 131 to 140 of about 10,834,928 (363)

Do Sustainable Agricultural Practices Boost Production and Technical Efficiency? A Case Study of Coffee Smallholders in Peru

Agribusiness, EarlyView.
ABSTRACT Smallholder agriculture remains a cornerstone for economic development and poverty reduction in Latin America. Their transition to sustainable agricultural production is critical in the face of the environmental challenges posed by conventional farming practices and is a key pathway to achieving the United Nations' Sustainable Development ...
Gabriela Carbajo‐Alvarez, Gabriel Rosero, Bernhard Brümmer   +2 more
wiley   +1 more source

Arithmetic in the developing brain: A review of brain imaging studies

Developmental Cognitive Neuroscience, 2018
Brain imaging studies on academic achievement offer an exciting window on experience-dependent cortical plasticity, as they allow us to understand how developing brains change when children acquire culturally transmitted skills. This contribution focuses
Lien Peters, Bert De Smedt
doaj  

The sum of a hybrid arithmetic function over a sparse sequence

AIMS Mathematics
Let $ \lambda_{f}(n) $ be the $ n $-th normalized Fourier coefficient of $ f $, which is a primitive holomorphic cusp form of even integral weight $ k\geq2 $ for the full modular group $ SL_2(\mathbb{Z}) $.
Huafeng Liu, Rui Liu
doaj   +1 more source

Bernoulli's Numbers and Certain Arithmetic Quotient Functions [PDF]

, 1945
H. S. Vandiver
openalex   +1 more source

Multiresponsive Color‐Tunable Phosphorescence With Matrix‐Confined Clusters

Aggregate, EarlyView.
The molecule with cluster‐triggered emission mechanisms is embedded in polymer matrix, the phosphorescence properties of multiclusters are size‐dependent and exhibit different responses to various stimuli, including temperature, concentration, and excitation, which synergistically induce color‐range tunable time‐dependent phosphorescence color behavior.
Lihui Hou, Ting Wang, Siufung Yu, Xuhui Xu, Xue Yu   +4 more
wiley   +1 more source

Effective arithmetic optimization algorithm with probabilistic search strategy for function optimization problems

Data Science and Management, 2022
This paper proposes an enhanced arithmetic optimization algorithm (AOA) called PSAOA that incorporates the proposed probabilistic search strategy to increase the searching quality of the original AOA.
Lu Peng, Chaohao Sun, Wenli Wu
doaj  

Asymptotic Formulas for Some Arithmetic Functions [PDF]

, 1958
P. Erdős
openalex   +1 more source

Model‐based fault diagnosis in closed‐loop safety‐critical chemical reactors: An experimental study

AIChE Journal, EarlyView.
Abstract This experimental study investigates fault detection and estimation in a continuous stirred‐tank reactor (CSTR) system under closed‐loop feedback control, including an analysis of different manipulative inputs for temperature regulation. A novel fault diagnosis approach is proposed, combining residual signal analysis and T2 statistic for real ...
Pu Du, Benjamin Wilhite, Costas Kravaris
wiley   +1 more source

Modular Calabi-Yau fourfolds and connections to M-theory fluxes

Journal of High Energy Physics
In this work, we study the local zeta functions of Calabi-Yau fourfolds. This is done by developing arithmetic deformation techniques to compute the factor of the zeta function that is attributed to the horizontal four-form cohomology.
Hans Jockers, Sören Kotlewski, Pyry Kuusela   +2 more
doaj   +1 more source

Forecasting the Number of Passengers on Hungarian Railway Routes Using a Similarity and Fuzzy Arithmetic-Based Inference Method

Mathematics
In this study, we present a similarity and fuzzy arithmetic-based fuzzy inference method and show how effectively it can be used to forecast the number of passengers on a railway route.
Marcell Fetter, Tamás Jónás
doaj   +1 more source