Results 131 to 140 of about 81,662 (309)

DRAWING THE PROFILE OF EFFICIENT FOOD INDUSTRIES-VERTICAL INTEGRATION, ECONOMIES OF SCALE, AND LOCATION ADVANTAGES IN THE DISTRIBUTION OF PRODUCTS: A CASE STUDY FROM THE GREEK FOOD INDUSTRY [PDF]

open access: yes
A stochastic frontier production function that incorporates a model for technical inefficiency effects is used to investigate the industrial production of Greek food industries. Panel data comes from 29 Greek firms in 1988 through 1992.
Beamer, Bobby G., Kaltsas, Ioannis K.
core   +1 more source

Bottlenecks‐Breaking in Zinc‐Iodine Batteries Toward Practical Implementation: A Review and Perspective

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Aqueous zinc–iodine batteries (Zn–I2Bs) offer promise for grid storage due to safety and cost advantages yet face critical bottlenecks: severe self‐discharge (polyiodide shuttling and HER), limited energy density, sluggish kinetics, and zinc anode instability.
Jia‐Lin Yang   +3 more
wiley   +1 more source

Financial Efficiency and the Ownership of Czech Firms [PDF]

open access: yes
In this paper we analyze the evolution of firm financial efficiency in the Czech Republic. Using a large panel of more than 400,000 Czech firm/years we study whether firms fully utilize their resources, how firm financial efficiency evolves over time ...
Evzen Kocenda   +2 more
core   +3 more sources

Technical Efficiency, Regulation, and Heterogeneity in Japanese Airports [PDF]

open access: yes
In this paper, the random stochastic frontier model is used to estimate the technical efficiency of Japanese airports taking into regulation and heterogeneity in the variables.
Carlos Pestana Barros   +2 more
core  

Critical Review on the Molecular Behavior of Surfactants at the Oil–Water Interface During Oil Displacement

open access: yesEnergy Science &Engineering, EarlyView.
This review systematically explores the molecular behavior of diverse surfactants (anionic, cationic, nonionic, amphoteric) at the oil–water interface through molecular dynamics simulations. It highlights their roles in reducing interfacial tension, altering interfacial structure, and enhancing oil recovery efficiency.
Zhaowei Hou   +10 more
wiley   +1 more source

Sensitivity analysis of efficiency rankings to distributional assumptions: applications to Japanese water utilities [PDF]

open access: yes
This paper examines the robustness of efficiency score rankings across four distributional assumptions for trans-log stochastic production-frontier models, using data from 1,221 Japanese water utilities (for 2004 and 2005).
Berg, Sanford, Yane, Shinji
core   +1 more source

Analysis of Energy Consumption, Economic Efficiency and Carbon Emissions of Ice Slurry Direct Supply System: A Case Study of China

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT Traditional air conditioners suffer from low energy efficiency and exacerbate grid peak loads. While ice storage offers energy‐saving potential, the systematic regulation of ice packing fraction (IPF) on cooling consumption and its synergy with dynamic carbon emissions remains unexplored.
Di Yang, Wenpeng Hong, Xu Jin
wiley   +1 more source

On Spatio-Temporal Stochastic Frontier Models

open access: yes
14 pages, 3 figures, 5 tables, presented at the SEA2024: XVIII World Conference of Spatial Econometrics Association (A tribute to Jean Paelinck).
Fusco, Elisa   +3 more
openaire   +2 more sources

Using Deep Learning Conditional Value‐at‐Risk Based Utility Function in Cryptocurrency Portfolio Optimisation

open access: yesInternational Journal of Finance &Economics, EarlyView.
ABSTRACT One of the critical risks associated with cryptocurrency assets is the so‐called downside risk, or tail risk. Conditional Value‐at‐Risk (CVaR) is a measure of tail risks that is not normally considered in the construction of a cryptocurrency portfolio.
Xinran Huang   +3 more
wiley   +1 more source

Privatization, Soft Budget Constraint, and Social Burdens: A Random-Effects Stochastic Frontier Analysis on Chinese Manufacturing Technical Efficiency [PDF]

open access: yes
Traditional panel stochastic frontier studies on privatization of Chinese State-owned firms face a major challenge, namely, the endogeneity problem. The endogeneity problem is present because decision-making process of privatization in China is very ...
Gao, Song
core   +1 more source

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