Advanced Science, EarlyView.Increasing nanocurvature effectively enriches the local electron density of the M–N4 motif, which facilitates electron transfer from the metal center to nitrogen atoms. This electronic behavior intensifies the localization and asymmetric distribution of charge, thereby significantly amplifying the dipole moment and polarizability.
Daohu Sheng +7 more
wiley +1 more source
Slovak agricultural farms in different regions - comparison of efficiency
Agricultural Economics (AGRICECON), 2008 This paper presents the results of stochastic parametric approach used in estimation of production frontier. The estimation of output oriented technical efficiency was based on the Stochastic Frontier analysis with Cobb-Douglas production function.
Z. Sojková, Z. Kropková, V. Benda
doaj +1 more source
One-step and two-step estimation of the effects of exogenous variables on technical efficiency levels [PDF]
Consider a stochastic frontier model with one-sided inefficiency u, and suppose that the scale of u depends on some variables (firm characteristics) z. A one-step model specifies both the stochastic frontier and the way in which u depends on z, and can ...
Schmidt, Peter, Wang, Hung-jen
core +1 more source
Defect‐Functionalization‐Mediated Tunneling Drives Nonlinear Photoemission in Perovskites
Advanced Science, EarlyView.This cover illustration depicts CsPbBr3 perovskite nanocrystals embedded with functionalized defect vacancies, where electrons migrate through defect‐mediated pathways and emit as lightning‐like beams. The imagery visualizes the core discovery of our work—defect‐functionalization‐mediated tunneling enabling nonlinear photoemission, where deep‐level ...
Hang Ren +9 more
wiley +1 more source
Environmental Efficiency Measurement with Translog Distance Functions: A Parametric Approach [PDF]
We use a flexible parametric hyperbolic distance function to estimate environmental efficiency when some outputs are undesirable. Cuesta and Zofio (J. Prod.
Cuesta, Rafael A. +2 more
core
A Stochastic Frontier Model with Correction for Sample Selection [PDF]
, 2008 Heckman’s (1979) sample selection model has been employed in three decades of applications of linear regression studies. The formal extension of the method to nonlinear models, however, is of more recent vintage.
Greene, William
core +1 more source
Inference in the nonparametric stochastic frontier model
Econometric Reviewssponsorship: Ingrid Van Keilegom acknowledges the financial support from the European Research Council (2016-2021, Horizon2020/ERC grant agreement No. 694409). Valentin Zelenyuk acknowledges the financial support from Australian Research Council (FT170100401). (European Research Council|694409, Australian Research Council|FT170100401)
Parmeter, Christopher F. +3 more
openaire +4 more sources
Sensing and Filtering Environmental Fluctuations: The Case of Biomolecular Condensates in Plants
Advanced Science, EarlyView.The diversity of plant condensates reflects constraints of sessile organisms to coordinate postembryonic development with environmental adaptation. This review examines how plants employ condensates to integrate temperature, light, redox, and nutrient signals.
Panagiotis N. Moschou, Dorothee Staiger
wiley +1 more source
Technical Efficiency and Heterogeneity of Argentina Pension Funds [PDF]
This paper examines the technical efficiency of Argentinean pension funds management companies using a random stochastic frontier model to rank the pension funds management companies, taking into account heterogeneity in the data.
Carlos Pestana Barros +2 more
core
Effects of Foreign Direct Investment on Firm-level Technical Efficiency: Stochastic Frontier Model Evidence from Chinese Manufacturing Firms [PDF]
, 2016 It has been recognized that multinational corporations can spill over to non-affiliated firms in host economies. Existing studies of foreign direct investment (FDI) and productivity growth often assume firms are perfectly efficient.
Wang, Miao Grace, Wong, Sunny
core +1 more source