Results 31 to 40 of about 97,812 (355)

Stochastic Frontier Analysis using Stata [PDF]

open access: yesThe Stata Journal: Promoting communications on statistics and Stata, 2012
This article describes sfcross and sfpanel, two new Stata commands for the estimation of cross-sectional and panel-data stochastic frontier models. sfcross extends the capabilities of the frontier command by including additional models (Greene, 2003, Journal of Productivity Analysis 19: 179–190; Wang, 2002, Journal of Productivity Analysis 18: 241–253)
Federico Belotti   +3 more
openaire   +2 more sources

Stochastic panel frontiers: A semiparametric approach [PDF]

open access: yesJournal of Econometrics, 1998
This paper complements the results of Hausman and Taylor (1981) and Cornwell, Schmidt and Sickles (1990) and generalizes Park and Simar (1994) by examining the semiparametric efficient estimation of panel models in which the random effects and the regressors have certain patterns of correlation.
PARK, Byeong U.   +2 more
openaire   +3 more sources

ANALISIS TINGKAT EFISIENSI TEKNIS DALAM USAHATANI PADI DENGAN FUNGSI PRODUKSI FRONTIR STOKASTIK

open access: yesEconomic Journal of Emerging Markets, 2011
The growth of productivity (yield) will be the major source of rice production in the next some few years to come. However, the development of rice productivity is facing the limited government budgets and the continuation of the conversion of land ...
Ahmad Muslim
doaj   +7 more sources

High‐Resolution and Real‐Time In Situ Generation of Cellular Spheroids by Laser‐Assisted Bioprinting for Guided Microvascularization

open access: yesAdvanced Functional Materials, EarlyView.
Micro‐injection laser‐assisted bioprinting enables ultrafast and precise patterning of small endothelial cell spheroids by injecting a highly concentrated single‐cell suspension into GelMA/ColMA hydrogels. In co‐culture with fibroblasts, controlled pre‐vasculogenic network formation is obtained at microscale resolution.
Charles Handschin   +9 more
wiley   +1 more source

Stochastic frontier models: a bayesian perspective

open access: yesJournal of Econometrics, 1992
A Bayesian approach to estimation, prediction and model comparison in composed error production models is presented. A broad range of distributions on the inefficiency term define the contending models, which can either be treated separately or pooled. Posterior results are derived for the individual efficiencies as well as for the parameters, and the ...
van den Broeck, Julien   +3 more
openaire   +4 more sources

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

open access: yesAdvanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu   +10 more
wiley   +1 more source

Pseudolikelihood estimation of the stochastic frontier model [PDF]

open access: yesApplied Economics, 2017
Discussion Paper / SFB 823;7 ...
Andor, Mark   +2 more
openaire   +3 more sources

Nanodiamond Quantum Sensors for Probing Free Radical Biology

open access: yesAdvanced Functional Materials, EarlyView.
Free radicals play key roles in cellular signaling and disease but remain difficult to measure in living systems. Nanodiamonds (NDs) with nitrogen‐vacancy (NV) centers enable quantum sensing of local magnetic noise via T₁ relaxometry, providing nondestructive radical detection in living cells.
Qi Lu, Yingke Wu, Tanja Weil
wiley   +1 more source

Factors affecting technical efficiency scores estimated for the cotton sector of the Harran plain in Turkiye: A stochastic frontier analysis

open access: yesITEGAM-JETIA, 2023
The current study deals with the technical efficiency of cotton farmers operating on the Harran Plain of Turkiye with an application to the two well-known stochastic approaches, i.e., the Cobb-Douglas and the translog stochastic frontier production ...
Tamer Işgın   +3 more
doaj   +1 more source

Toward Stable Multivalent Metal Batteries: Understanding the Interfacial Chemistry for Magnesium and Calcium Metal Anodes

open access: yesAdvanced Functional Materials, EarlyView.
Interphase chemistry governs the stability of multivalent metal batteries. We summarize state‐of‐the‐art developments in calcium and magnesium metal batteries by focusing on the correlation among electrolytes, interphase layers, and the electrochemical performance of corresponding metal anodes.
Huijun Lin   +4 more
wiley   +1 more source

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