Results 131 to 140 of about 188,864 (309)
Estimating fixed-effect panel stochastic frontier models by model transformation
Traditional panel stochastic frontier models do not distinguish between unobserved individual heterogeneity and inefficiency. They thus force all time-invariant individual heterogeneity into the estimated inefficiency. Greene (2005) proposes a true fixed-
Ho, Chia-Wen, Wang, Hung-Jen
core +1 more source
2D MOF with Intrinsic Porosity for Colorimetric Volatile Organic Compounds (VOCs) Detection
Advanced Materials, EarlyView.An uncommon 2D MOF with intrinsic in‐plane porosity that can be mechanically exfoliated undergoes a distinct and reversible colour change upon exposure to various volatile organic compounds. ABSTRACT In this work, we report an uncommon 2D metal–organic framework (MOF) with intrinsic in‐plane porosity that undergoes a distinct and reversible colour ...
Sergio R. Gamarra +4 more
wiley +1 more source
Comparing the performance of public and private water companies in the Asia and Pacific region : what a stochastic costs frontier shows [PDF]
Estache and Rossi estimate a stochastic costs frontier for a sample of Asian and Pacific water companies, comparing the performance of public and privatized companies based on detailed firm-specific information published by the Asian Development Bank in ...
Estache, Antonio, Rossi, Martin A.
core
Single‐Chromophore Homojunction Organic Solar Cells: A Path to Simplicity and Efficiency
Advanced Materials, EarlyView.This perspective discusses how the intrinsic optoelectronic properties of organic semiconductors, their molecular packing in the solid‐state, and internal energetic gradients within a device can enable free‐charge carrier generation in homojunction organic solar cells.
Shaun McAnally +2 more
wiley +1 more source
MARKET ASSISTED LAND REFORM IN NE BRAZIL: A STOCHASTIC FRONTIER PRODUCTION EFFICIENCY EVALUATION [PDF]
We evaluate the "Cédula da Terra" Pilot Project, a land reform project whose conception, mechanisms and operational structure is different from traditional agrarian reform based on expropriation.
Miguel Rocha de Sousa +4 more
core
Advanced Materials, EarlyView.This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley +1 more source
Single bioaerosol characterizations based on optical tweezers
APL PhotonicsBioaerosols, including bacteria, viruses, pollens, and fungal spores, play critical roles in global biosecurity, impacting human living environments and daily activities. The precise and in situ measurement of single bioaerosols represents a rigorous way
Qianwen Ying +5 more
doaj +1 more source
Education externalities in rural Ethiopia: evidence from average and stochastic frontier production functions. [PDF]
Education will have externality effects in agriculture if, in the course of conducting their own private economic activities, educated farmers raise the productivity of uneducated farmers with whom they come into contact.
John Knight, Sharada Weir
core
Advanced Materials, EarlyView.We demonstrate a neuromorphic synapse in 2D Fe3GaTe2 flakes. The device operates via a current‐driven transformation from a skyrmion‐lattice to a stripe‐domain state, yielding a linear anomalous Hall resistance response with a tunable slope to enable multiply‐accumulate operations. Simulations confirm its viability in artificial neural networks.
Jixiang Huang +20 more
wiley +1 more source