Results 31 to 40 of about 211 (141)

Globalization, internal migration, and public goods provision in emerging economies

open access: yesAmerican Journal of Political Science, EarlyView.
Abstract Globalization can introduce new employment opportunities to emerging economies in multinational corporations and exporting firms. Who is best positioned to benefit, and what are the political consequences for “left behind” areas? We argue that primarily advantaged groups seize these opportunities through internal migration toward centers of ...
Benjamin Helms, Junghyun Lim
wiley   +1 more source

Leveraging the TabPFN Algorithm for High‐Resolution Mapping of Groundwater Bicarbonate and Its Scaling Risk Across China

open access: yesWater Resources Research, Volume 62, Issue 5, May 2026.
Abstract Large‐scale groundwater quality prediction is often constrained by sparse sampling, limiting the reliability of spatial assessments. This study introduces Tabular Prior‐data Fitted Network (TabPFN), a machine learning model based on prior‐fitting networks, to address this challenge and enable high‐precision mapping of groundwater bicarbonate ...
Tong Sun   +8 more
wiley   +1 more source

α-Skew π-McCoy Rings

open access: yesJournal of Applied Mathematics, 2013
As a generalization of α-skew McCoy rings, we introduce the concept of α-skew π-McCoy rings, and we study the relationships with another two new generalizations, α-skew π1-McCoy rings and α-skew π2-McCoy rings, observing the relations with α-skew McCoy ...
Areej M. Abduldaim, Sheng Chen
doaj   +1 more source

Central Armendariz rings. [PDF]

open access: yes, 2011
Let \(R\) be a ring with 1, \(C\) the center of \(R\), \(R[x]\) the polynomial ring with an indeterminate \(x\), and \(R[x,x^{-1}]\) the Laurent polynomial ring. If \((\sum_{i=0}^n a_ix^i)(\sum_{j=0}^m b_jx^j)=0\) for \(\sum_{i=0}^n a_ix^i,\sum_{j=0}^m b_jx^j\not=0\) in \(R[x]\) implies that \(a_ib_j\in C\) for all \(i\) and \(j\), then \(R\) is called
Agayev, Nazım   +3 more
openaire   +1 more source

Extended Armendariz Rings [PDF]

open access: yes, 2013
In this note we introduce central linear Armendariz rings as a generalization of Armendariz rings and investigate their properties.
Agayev, Nazım   +2 more
openaire   +2 more sources

NEW DATA ON THE SERTORIAN WAR AT THE VASCON SITE OF IRULEGI (ARANGUREN VALLEY, NAVARRE)

open access: yesOxford Journal of Archaeology, Volume 45, Issue 2, Page 180-203, May 2026.
Summary Literary sources provide limited information on specific developments during the civil wars of the late Roman Republic, including the Sertorian War. This study describes the attack on the Vascon settlement of Irulegi (Aranguren valley, Navarre), in northern Spain, within the context of this conflict, using the methodological and theoretical ...
Mattin Aiestaran   +12 more
wiley   +1 more source

Methane and Ethane Emission Rates, Intensities, and Trends: Aircraft Mass Balance Insights Over the Denver‐Julesburg Basin, Fall 2021

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract Despite a 2.1‐fold increase in oil and gas (O&G) production from 2012 to 2021 in the Wattenberg Field (WF) area of the Denver‐Julesburg Basin (DJB), total methane (CH4) emissions have remained unchanged within measurement uncertainties (26.0 ± 6.8 t/hr in 2012, 24.0 ± 5 t/hr in 2015, and 21.4 ± 5.7 t/hr in 2021), while ethane (C2H6) emissions ...
H. M. Daley   +19 more
wiley   +1 more source

Democratic Decline and Return Migration: What Motivates Highly‐Skilled Voluntary Return to Post‐2016 Turkey?

open access: yesInternational Migration, Volume 64, Issue 2, April 2026.
ABSTRACT Migration scholars often present democratic decline as an emigration driver. This effect is more pronounced among highly‐skilled citizens who have the resources and capability to settle abroad. Yet, not much attention has been paid to why highly‐skilled emigrants would opt to return to their autocratizing countries, even if they are concerned ...
Gülay Türkmen
wiley   +1 more source

Endocrine Disruptive Effects of the Herbicides Linuron, Chloridazon and Metribuzin on Bovine Granulosa Cells

open access: yesReproduction in Domestic Animals, Volume 61, Issue 4, April 2026.
ABSTRACT Linuron, chloridazon and metribuzin are herbicides thought to have potential endocrine disruption (ED) effects. This study investigated the effects of linuron, chloridazon and metribuzin on bovine granulosa cell viability and oestrogen (E2) and progesterone (P4) secretion in vitro.
Metehan Eser Kahveci   +2 more
wiley   +1 more source

On Nilpotent Elements of Skew Polynomial Rings

open access: yesJournal of Mathematical Extension, 2012
We study the structure of the set of nilpotent elements in skew polynomial ring R[x; α], when R is an α-Armendariz ring. We prove that if R is a nil α-Armendariz ring and α t = IR, then the set of nilpotent elements of R is an α-compatible subrng of ...
J. Esmaeili, E. Hashemi
doaj  

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