Results 101 to 110 of about 2,200,184 (341)

Flexural Behavior of 3D‐Printed Porous Bouligand‐Structured Polymers: Influence of Pitch Angle and Porosity

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil   +2 more
wiley   +1 more source

A note on the use of quantile regression in beta convergence analysis [PDF]

open access: yes
We discuss how to interpret conflicting results obtained by the use of quantile regression methods in growth regression tests of β-convergence hypothesis and the results obtained by nonparametric methods.
Marcio Laurini
core  

Sigma-Convergence Versus Beta-Convergence: Evidence from U.S. County-Level Data [PDF]

open access: yes
In this paper we outline (i) why ó-convergence may not accompany â- convergence, (ii)cite evidence of â-convergence in the U.S., (iii) and use USA county-level data containing over 3,000 cross-sectional observations to demonstrate that ó-convergence does
Daniel Levy   +2 more
core   +2 more sources

Convergence and Diversification of Electricity-Generation Structures in the EU-27, 1990–2024

open access: yesEnergies
The European Union’s common climate and energy framework—the Renewable Energy Directives and the European Green Deal—seeks to align national energy systems, yet whether electricity-generation structures converge remains underexplored. Using Eurostat data
Jarosław Kaczmarek   +2 more
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch   +3 more
wiley   +1 more source

Spatial econometric analysis of the evolution of the European regional convergence process, 1980-1999 [PDF]

open access: yes
beta-convergence, convergence clubs, European regions, spatial ...
Julie Le Gallo, Sandy Dall'erba
core  

New AI‐Assisted Approach for Expanding the Solution Space: Application to Lattice Structure Design

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces an innovative framework for designing structured materials by ex panding the design space through reparameterization of qualitative variables into continuous structural descriptors. Combined with machine‐learning‐based prediction and multi‐objective optimization, the approach enables the discovery of novel lattice architectures ...
G. H. Gahimbare   +5 more
wiley   +1 more source

Arkansas Federation Of Women's Clubs collection, 1897-1986

open access: yes, 1897
This collection contains minutes of meetings and conventions, constitutions and by-laws, reports, correspondence, photographs, essays & addresses, historical information, political histories of Arkansas counties, yearbooks, programs, newsclippings, and ...
Arkansas Federation of Women's Clubs
core   +1 more source

Latin American Clubs: Uncovering Patterns of Convergence [PDF]

open access: yesSSRN Electronic Journal, 2006
This paper explores the dynamics of convergence in Latin American countries and asks whether there are tendencies for converging to different clubs. The analysis shows clear differences between two groups: a large group of low-to-middle income countries and a small group of rich ountries.
openaire   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy