Results 141 to 150 of about 51,232,240 (306)

Neoclassical versus frontier production models? Testing for the skewness of regression residuals [PDF]

open access: yes
The empirical literature on production and cost functions is divided into two strands: 1) the neoclassical approach that concentrates on model parameters, 2) the frontier approach that decomposes the disturbance term to a symmetric noise term and a ...
Kuosmanen, Timo, Fosgerau, Mogens
core  

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

open access: yesAdvanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Analysis of Technical Efficiency and Varietal Differences in Pistachio Production in Iran Using a Meta-Frontier Analysis [PDF]

open access: yes
This paper reports on an analysis of technical efficiency and varietal differences in pistachio production in Iran. A random sample of 475 farmers was selected from the province of Kerman in 2003 and 2004. In this study, farmers are classified into three
Villano, Renato A.   +2 more
core  

Achievement of a vacuum-levitated metal mechanical oscillator with ultra-low damping rate at room temperature

open access: yesCommunications Physics
A vacuum-levitated metal mechanical oscillator with an ultra-low damping rate is an ideal tool for detecting mass-related short-range forces; however, its realization at room temperature has not yet been achieved, limiting its practical applications.
Fang Xiong   +5 more
doaj   +1 more source

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

open access: yesAdvanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena   +3 more
wiley   +1 more source

Absorptive Capacity and Frontier Technology: Evidence from OECD Manufacturing Industries [PDF]

open access: yes
This paper investigates whether differences in absorptive capacity help to explain cross-country differences in the level of productivity. We utilise stochastic frontier analysis to investigate two potential sources of this inefficiency: differences in ...
Stevens, Phillip Andrew, Richard Kneller
core  

Spatiotemporal optical vortex combs

open access: yesNature Communications
Single-packet spatiotemporal optical vortices (STOVs) with transverse orbital angular momentum (OAM) have recently garnered significant attentions. Nevertheless, more advanced applications require diverse transverse OAM modes and multiple STOV wave ...
Fu Feng   +9 more
doaj   +1 more source

Laser‐Assisted Phase Engineering of 2D MoS2 for Efficient Solution‐Processed Electronics

open access: yesAdvanced Materials, EarlyView.
Here, local laser‐assisted phase transition from solution‐processed phase‐pure 1T′ to 2H MoS2 is shown to critically depend on the irradiation atmosphere. While processing in air leads to damaged insulating regions, inert conditions yield semiconducting 2H domains, enabling direct field‐effect transistor patterning with optimized lateral 1T′‐2H MoS2 ...
Anna Zhuravlova   +10 more
wiley   +1 more source

Home - About - Disclaimer - Privacy