Results 61 to 70 of about 67,376,609 (305)
The Distribution of the Sample Minimum-Variance Frontier [PDF]
, 2008 In this paper, we present a finite sample analysis of the sample minimum-variance frontier under the assumption that the returns are independent and multivariate normally distributed.
Kan, R. +5 more
core +1 more source
Advanced Functional Materials, EarlyView.A graphene‐supported 2D metal–organic network stabilizes highly reactive Fe(I)‐N4 single sites through Co‐induced charge redistribution. Combined experiments and theory reveal Fe(I) formation, oxygen‐driven oxidation, and O2 activation mechanisms, offering a strategy to access low‐valent iron centers relevant to catalytic and biological processes ...
Alessandro Namar +9 more
wiley +1 more source
Huli yanjiu, 2017 Objective:To probe into the research status quo,research hotspots and research frontier of mobile health,so as to provide a theoretical basis for Chinese nurses carrying out mobile health related research and practice.Methods:Bibliometrics,coword ...
Chen Xuemei, Zhou Lanshu
doaj
Frontier Techniques: Contrasting the Performance of (Single-)Truncated Order Regression Methods and Replicated Moments [PDF]
This research contrasts three econometric alternatives for stochastic efficiency frontier analysis: order – inter-quantile – and inverse order regression under the assumption of truncated error term distribution, and replicated moment estimation.
Ana Paula Martins
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Advanced Functional Materials, EarlyView.Forming‐free epitaxial Pt/La0.5Sr0.5CoOx (LSCO)/La0.5Sr0.5MnO3 (LSMO) memristors exhibit heterogeneous and partially reversible topotactic switching involving brownmillerite (BM)‐, Grenier (GN)‐like‐, and perovskite (PV)‐like configurations. Atomic‐resolution scanning transmission electron microscopy and in situ transmission electron microscopy resolve
Zi‐Qin Hong +5 more
wiley +1 more source
Nonparametric Frontier Estimation from Noisy Data [PDF]
A new nonparametric estimator of production a frontier is defined and studied when the data set of production units is contaminated by measurement error. The measurement error is assumed to be an additive normal random variable on the input variable, but
Van Bellegem, Sébastien +2 more
core +2 more sources
On estimating the effectiveness of resources. A local maximum likelihood frontier approach on care for students [PDF]
To study education as a complex production process in a noisy and heterogeneous setting, this paper suggests to using a stochastic frontier model estimated by a local maximum likelihood approach (LMLSF). The LMLSF smoothly combines the virtues of the non-
De Witte, K., Verschelde, M.
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Advanced Functional Materials, EarlyView.Conversion‐induced sulfur expansion generates strong mechanical constraints and localized stresses within solid‐state Li‐S cathodes. Heterogeneous solid‐electrolyte confinement creates tensile strain‐energy hotspots that govern particle cracking. Larger sulfur particles accelerate fracture, while higher porosity relaxes constraint and delays damage ...
Arpan K. Sharma +3 more
wiley +1 more source
Inhibition of IL-1R1/MyD88 signalling promotes mesenchymal stem cell-driven tissue regeneration
Nature Communications, 2016 TLR and IL-1R1 ligands are danger signals released following tissue injury and during the healing response. Here, the authors show that IL-1β signalling via IL-1R1/MyD88 inhibits the Akt/GSK-3β/β-catenin pathway in mesenchymal stem cells, which ...
Mikaël M. Martino +6 more
doaj +1 more source
Identification of Segments of French Urban Public Transport with a Latent Class Frontier Model [PDF]
This paper analyses technical efficiency of French urban public transport from 1995 to 2002 with unbalanced panel data. The latent class frontier model is used allowing the identification of different segments in the production frontier.
Carlos Barros, William Roy
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