Results 71 to 80 of about 2,123 (259)

Epitaxially Integrated Electro‐Optic KNbO3 Thin Films on Silicon

open access: yesAdvanced Materials, EarlyView.
We demonstrate the first epitaxial integration of electro‐optic KNbO3 thin films on silicon using suboxide molecular‐beam epitaxy. Combining adsorption‐controlled molecular‐beam epitaxy, advanced characterization, and phase‐field modeling, we demonstrate phase‐pure crystalline films mirroring bulk crystals with robust Pockels response, enabling future ...
Sankalpa Hazra   +17 more
wiley   +1 more source

Assessment of the efficiency of palm plantations using a stochastic frontier approach

open access: yesAgricultural and Resource Economics
Purpose. The purpose of this study is to (1) estimate the effect of inputs use on production with the stochastic frontier production function model approach; (2) assess the potential for increasing productivity through the study of technical, allocative ...
Saidin Nainggolan, Yanuar Fitri
doaj   +1 more source

Estimation and determinants of efficiency among rice farmers in Benin

open access: yesCogent Food & Agriculture, 2020
Rice plays an important role in achieving food security in Benin but its production remains low and needs to be optimized. This study estimates technical and allocative efficiencies as well as the sources of inefficiency among rice producers in Benin ...
Véronique Houngue   +1 more
doaj   +1 more source

Interface‐Mediated Catalysis for Improved Hydrogen Storage in Reactive Hydride Composites

open access: yesAdvanced Materials, EarlyView.
Catalyst–hydride interfaces are engineered in Co@C‐ and Ni@C‐modified 2LiH + MgB2 reactive hydride composites to accelerate hydrogen uptake and release. Multiscale scattering, in‐situ synchrotron radiation powder x‐ray diffraction and density functional theory calculations reveal the structural and electronic origin of the catalytic enhancement ...
Yuanyuan Shang   +12 more
wiley   +1 more source

Technical and allocative efficiency of commercial banks in Ethiopia

open access: yesCogent Economics & Finance
This paper investigated the technical and allocative efficiency of commercial banks in Ethiopia. The analysis was based on unbalanced panel data of 19 banks over the period of 1990-2022.
Bisrat Getinet Chane   +2 more
doaj   +1 more source

ECONOMIC EFFICIENCY OF CENTRAL AND EAST EUROPEAN FARMS BASED ON DEA - COST APPROACH [PDF]

open access: yesScientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2018
The paper addressed an approach on the economic efficiency of farms among ten Central and East European Countries by means of the technical and allocative efficiency, through the DEA-COST method.
Elena TOMA, Ionela Mituko VLAD
doaj  

Accelerated Materials Discovery Through In Situ X‐ray Diffraction: Solvothermal Formation of PdxMy (M═Si, Ge, Sn, Pb) Intermetallic Nanoparticles

open access: yesAdvanced Materials, EarlyView.
In situ PXRD data on solvothermal reactions accelerate materials discovery while simultaneously providing fundamental insights into complex crystal formation processes. Using PdxMy (M = Si, Ge, Sn, Pb) as an example, a general formation mechanism is identified, and specific synthesis strategies for ex situ preparation of SnPd2, Sn13Pd20, and SnPd ...
Anders Bæk Borup   +1 more
wiley   +1 more source

Constrained Fair and Efficient Allocations

open access: yesProceedings of the AAAI Conference on Artificial Intelligence
Fairness and efficiency have become the pillars of modern fair division research, but prior work on achieving both simultaneously is largely limited to the unconstrained setting. We study fair and efficient allocations of indivisible goods under additive valuations and various types of allocation feasibility constraints, and demonstrate the ...
Benjamin Cookson   +2 more
openaire   +3 more sources

Descriptor‐Informed Screening of Interface‐Active Molecules for Efficient Magnesium Metal Anodes

open access: yesAdvanced Materials, EarlyView.
A descriptor‐informed molecular screening strategy identifies 4‐bromo‐N, N‐dimethylaniline (BrNNA) as an interface‐active electrolyte component that enables fast Mg stripping/plating in Mg(TFSI)2‐based electrolytes. By simultaneously regulating Mg2+ solvation and interphase formation, the BrNNA‐containing electrolyte delivers activation‐free Mg ...
Hao Xu   +16 more
wiley   +1 more source

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