Results 31 to 40 of about 43,687 (165)

A Comprehensive Review on the Significance, Sources, and Applications of Virtual Water on Global Platform

open access: yesFood Safety and Health, EarlyView.
A conceptual framework of virtual water showing its sources, major applications, components of the virtual water footprint, and emerging future directions. The diagram emphasizes the growing role of virtual water in global sustainability and resource planning.
Priti Bhowmik   +2 more
wiley   +1 more source

On the probability of the Condorcet Jury Theorem or the Miracle of Aggregation

open access: yesMathematical Social Sciences, 2022
Minor modification with respect to other ...
openaire   +4 more sources

Investigating the Iron‐Steam Process for Coupling With SOEC and SOFC: A Step Toward Integrated Hydrogen and Electricity Storage

open access: yessteel research international, EarlyView.
Fixed‐bed reactor experiments (10 L) validate the iron–steam redox process, bridging material‐scale research and industrial power‐to‐power applications. Coupled with SOEC/SOFC systems, this framework defines critical interfaces for heat and gas management. Results confirm reproducible hydrogen storage and release, demonstrating technical feasibility at
Julien Göthel   +2 more
wiley   +1 more source

Collision Detection Algorithms for Autonomous Loading Operations of LHD-Truck Systems in Unstructured Underground Mining Environments

open access: yesMathematics
This study addresses collision detection in the unmanned loading of ore from load-haul-dump (LHD) machines into mining trucks in underground metal mines.
Mingyu Lei   +7 more
doaj   +1 more source

On relative normal modes

open access: yes, 1999
We generalize the Weinstein-Moser theorem on the existence of nonlinear normal modes near an equilibrium in a Hamiltonian system to a theorem on the existence of relative perodic orbits near a relative equilibrium in a Hamiltonian system with continuous ...
Arms   +15 more
core   +2 more sources

A generalization of Scarf's theorem: An α-core existence theorem without transitivity or completeness

open access: yesJournal of Economic Theory, 1992
This paper provides conditions under which the ``\(\alpha\)-core'' of a normal form game is nonempty. The ``\(\alpha\)-core'' is a notion due to R. Aumann. It is defined as follows: A strategy combination can be ``\(\alpha\)-blocked'' by a coalition if there is a choice of strategies by the coalition members which yields an outcome strictly preferred ...
openaire   +1 more source

Network Structure and the Efficiency Gains from Mergers: Evidence from U.S. Freight Railroads

open access: yesThe RAND Journal of Economics, EarlyView.
ABSTRACT The trade‐off between market power and efficiency gains is central to antitrust analyses of mergers, but empirical evidence quantifying efficiencies remains limited. Using transaction‐level data from U.S. freight railroads (1985–2005), this article quantifies merger‐induced cost efficiencies, driven mainly by eliminating inter‐railroad ...
Yanyou Chen
wiley   +1 more source

ICE-TheOREM - End to End Semantically Aware eResearch Infrastructure for Theses [PDF]

open access: yes, 2009
4th International Conference on Open RepositoriesThis presentation was part of the session : Conference PresentationsDate: 2009-05-19 10:00 AM – 11:30 AMICE-TheOREM was a project which made several important contributions to the repository domain ...
Downing, Jim, Sefton, Peter M.
core  

On the Classification Theorems of Almost-Hermitian or Homogeneous Kähler Structures

open access: yesRocky Mountain Journal of Mathematics, 2006
A proof by Young tableaux and symmetrizers is given of the classification theorems by Gray and Hervella of almost-Hermitian structures and by Abbena and Garbiero of homogeneous Kähler structures. Partially supported by DGICYT, Spain, under Grant no. BFM2002–00141.
Fortuny, P., Gadea, P.M.
openaire   +3 more sources

The Surprising Bias of PPML Estimates of Structural Gravity Models With Two‐Way Fixed Effects

open access: yesReview of International Economics, EarlyView.
ABSTRACT The previous literature has shown that the Poisson Pseudo‐Maximum Likelihood (PPML) estimator provides consistent and asymptotically unbiased estimates of the parameters of structural gravity models with two‐way fixed effects, although their standard errors need correction.
Ben Shepherd, Tom Zylkin
wiley   +1 more source

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