Results 31 to 40 of about 2,758,604 (298)

Marshallian theory of regional agglomeration

open access: yesPapers in Regional Science, 2010
Abstract Most models of regional agglomeration are based on the new economic geography (NEG) model in which returns to scale are pecuniary. We investigate the implications for regional agglomeration of a ‘Marshallian’ model in which returns to scale derive from technological externalities.
Michael Beenstock, Daniel Felsenstein
openaire   +1 more source

Distinct regions of right temporo-parietal junction are selective for theory of mind and exogenous attention. [PDF]

open access: yesPLoS ONE, 2009
In functional magnetic resonance imaging (fMRI) studies, a cortical region in the right temporo-parietal junction (RTPJ) is recruited when participants read stories about people's thoughts ('Theory of Mind').
Jonathan Scholz   +4 more
doaj   +1 more source

Suicide risk model based on the interpersonal theory of suicide: evidence in three regions of Mexico

open access: yesInteracciones, 2023
Background: Reports of suicidal behavior have increased in Mexico for years. In order to develop a more adequate suicide prevention strategy, it is necessary to understand its predictive factors, so the purpose of this research was to propose a model of ...
Modesto Solis-Espinoza   +2 more
doaj   +1 more source

Temporally Graded Activation of Neocortical Regions in Response to Memories of Different Ages [PDF]

open access: yes, 2007
The temporally graded memory impairment seen in many neurobehavioral disorders implies different neuroanatomical pathways and/or cognitive mechanisms involved in storage and retrieval of memories of different ages.
Antuono, Piero   +7 more
core   +2 more sources

Specific Effect of Innovation Factors on Socioeconomic Development of Countries in View of the Global Crisis

open access: yesEconomies
Although the coronavirus pandemic has now faded into the background, the global crisis caused by COVID-19 has had the most devastating impacts worldwide.
Sergey Mikhailovich Vasin   +1 more
doaj   +1 more source

An Algebraic Jost-Schroer Theorem for Massive Theories

open access: yes, 2012
We consider a purely massive local relativistic quantum theory specified by a family of von Neumann algebras indexed by the space-time regions. We assume that, affiliated with the algebras associated to wedge regions, there are operators which create ...
D. Buchholz   +27 more
core   +1 more source

The Zero-Bin and Mode Factorization in Quantum Field Theory [PDF]

open access: yes, 2006
We study a Lagrangian formalism that avoids double counting in effective field theories where distinct fields are used to describe different infrared momentum regions for the same particle.
A. H. Mueller   +7 more
core   +2 more sources

Determining the ecological security pattern and important ecological regions based on the supply–demand of ecosystem services: A case study of Xuzhou City, China

open access: yesFrontiers in Public Health, 2023
The supply–demand for ecosystem services (ESs) is the bridge between ecological security patterns (ESPs) and human wellbeing. This study proposed a research framework of ESP of “supply–demand–corridor–node” and took Xuzhou, China, as a research case ...
Ziyi Wang   +6 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Tripartite genome of all species [version 1; referees: 1 approved, 2 approved with reservations]

open access: yesF1000Research, 2016
Neutral theory has dominated the molecular evolution field for more than half a century, but it has been severely challenged by the recently emerged Maximum Genetic Diversity (MGD) theory.
MengPing Long, TaoBo Hu
doaj   +1 more source

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