Results 71 to 80 of about 355,876 (262)

Population decline in Lithuania: who lives in declining regions and who leaves?

open access: yesRegional Studies, Regional Science, 2017
Since the 1990s, Lithuania lost almost one-quarter of its population, and some regions within the country lost more than 50% of their residents. Such a sharp population decline poses major challenges to politicians, policy-makers and planners. The aim of
Rūta Ubarevičienė, Maarten van Ham
doaj   +1 more source

Understanding gender, marital status & education as internal migration factors in developing countries

open access: yesJurnal Pendidikan Geografi, 2019
This study aims to understand the factors of gender, marital status, and education in influencing the decision to carry out internal migration in developing countries, especially Indonesia between 2007-2015.
Dibyo Waskito Guntoro   +2 more
doaj   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb   +6 more
wiley   +1 more source

Forced Migration of Internally Displaced Persons (IDPs) in Ukraine: Current Situation, Problems, Solutions [PDF]

open access: yesProblemi Ekonomiki, 2018
The aim of the article is to highlight the situation and problems concerning the forced migration of internally displaced persons (IDPs) in Ukraine, as well as to suggest ways for addressing the problems.
Novikova Olha F., Pankova Oksana V.
doaj  

Internal and International Migration in “Schengenland”. Selectivity of the young Spanish migration.

open access: yes, 2023
"The study of the links between internal and international migration has traditionally been neglected in migration research, a shortfall that is particularly pronounced within the context of the European Union (EU) and its free movement policy, which resembles internal migration in terms of human agency.
openaire   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

open access: yesAdvanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang   +2 more
wiley   +1 more source

Integration of OpenCV‐Based Microscopic Adhesive Volume Measurement Into a Pyiron Workflow for Automated Data Analysis

open access: yesAdvanced Engineering Materials, EarlyView.
Residual adhesive after electrode loading in adhesive‐assisted resistance spot welding is quantified through a traceable experimental‐to‐digital workflow. Chromatic confocal topography provides calibrated surface‐height data, while OpenCV detects the electrode imprint and integrates adhesive height into comparable volume metrics.
Sung‐Min Wi, Jiangdong Zhao
wiley   +1 more source

Analysis of Spatial Distribution of Aging and Internal Migration in the Counties of Country

open access: yesSālmand, 2023
Objectives Considering the migration age pattern and the aging trend in Iran, this study aims to investigate the migration effect on the aging spatial distribution of the country during 2006-2016.
Saeedeh Shahbazin, Mohammad Sasanipour
doaj  

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

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