Results 31 to 40 of about 2,170,238 (197)
Access to information on public buyers and selected service providers has been enhanced by the recent release of public procurement data at the European level. After being “cleaned” and geo-referenced, the European Tenders Electronic Daily (TED) database
Amélie Deschamps +2 more
doaj +1 more source
Probing interaction and spatial curvature in the holographic dark energy model
In this paper we place observational constraints on the interaction and spatial curvature in the holographic dark energy model. We consider three kinds of phenomenological interactions between holographic dark energy and matter, i.e., the interaction ...
+56 more
core +2 more sources
Relativistic approach to electromagnetic imaging [PDF]
A novel imaging principle based on the interaction of electromagnetic waves with a beam of relativistic electrons is proposed. Wave-particle interaction is assumed to take place in a small spatial domain, so that each electron is only briefly accelerated
Bertrand +9 more
core +1 more source
Better understanding of the competitive interaction at the early development stages of the stand is crucial to help schedule silvicultural treatments for young stands and for the better management of the future stands. We used scale‐dependent analysis to
Osman Yalçın Yılmaz +6 more
doaj +1 more source
La diffusion spatiale des pièces euro étrangères en Belgique et en France
At the beginning of 2002, the new euro currency was introduced in 12 of the 15 States of the European Union. The study of the national origin of coins can be used – under certain conditions – to produce a picture of global mobility of Europeans across ...
Sandrine Berroir +3 more
doaj +1 more source
To promote the coordinated development of urban and rural areas, China has adopted a hybrid strategy of urbanization and rural village renewal. Due to the large development differences between villages, choosing appropriate strategies is significant for ...
Wenhua Yuan +3 more
doaj +1 more source
Spatial Interaction, Spatial Multipliers and Hospital Competition [PDF]
Abstract The hospital competition literature shows that estimates of the effect of local market structure (concentration) on pricing (competition) are sensitive to geographic market definition. Our spatial lag model approach effects smoothing of the explanatory variables across the discrete market boundaries, resulting in robust estimates of the impact
Mobley, Lee R +2 more
openaire +3 more sources
In both developed and developing countries, port-city relationships have always attracted much attention. However, in the port–city interface, views differ as to whether the port drives the city or vice versa.
Zeyang Li +3 more
doaj +1 more source
This study extends and reinterprets Roback’s general spatial equilibrium model by casting it within the comprehensive wealth framework. Considering the explicit spatial effects among regions, the analysis refines estimates of the contribution of natural,
Jinhyoung Kim +2 more
doaj +1 more source
Modulation of Kekul\'e adatom ordering due to strain in graphene [PDF]
Intervalley scattering of carriers in graphene at `top' adatoms may give rise to a hidden Kekul\'e ordering pattern in the adatom positions. This ordering is the result of a rapid modulation in the electron-mediated interaction between adatoms at the ...
González-Árraga, L. +2 more
core +2 more sources

