Results 41 to 50 of about 2,525,619 (266)

Assessing the level of greening in a major city: subjective and objective evaluation on the example of the city of Kyiv

open access: yesBulletin of Geography. Socio-Economic Series, 2020
One of the ways to ensure the sustainable development of settlements is to improve comfort of living in urban areas. The formation of a developed landscaping system is one of the priorities of modern city development and provides an opportunity to ...
Pleshkanovska Alla Mikhailivna
doaj   +1 more source

Trends and seasonal variability in ammonia across major biomes in western and central Africa inferred from long-term series of ground-based and satellite measurements [PDF]

open access: yesAtmospheric Chemistry and Physics, 2023
Ammonia (NH3) is the most abundant alkaline component in the atmosphere. Changes in NH3 concentrations have important implications for atmospheric chemistry, air quality, and ecosystem integrity.
M. Ossohou   +12 more
doaj   +1 more source

On squares of squares [PDF]

open access: yesActa Arithmetica, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Le piazze di Atene. Reportage sociologico sulle icone della rinascita democratica = The squares of Athens. A sociological report about the icons of a democracy's renaissance

open access: yesH-ermes: Journal of Communication, 2015
The squares of Athens. A sociological report about the icons of a democracy's renaissance. The purpose of this paper is to examine the greek squares as the possible icons of a democracy's renaissance in Europe.
Enrico Consoli
doaj   +1 more source

Spatial and Temporal Variations of Thermal Contrast in the Planetary Boundary Layer

open access: yesJournal of Remote Sensing
High-spectral resolution infrared sounders on board satellites can measure atmospheric trace gases confined to the planetary boundary layer (PBL). However, their sensitivity to the PBL depends on the temperature difference between the surface and the ...
Tommaso Di Gioacchino   +5 more
doaj   +1 more source

Greenery of Urban Conservation Zones – a Component for Preservation of Monuments Authenticity

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2016
The work deals with the criteria determination of qualitative rating of greenery as the basis for the protection and regeneration of greenery in areas with monumental values – urban conservation zones.
Eva Sojková, Petr Šiřina
doaj   +1 more source

On some fundamental results about higher-rank graphs and their C*-algebras [PDF]

open access: yes, 2011
Results of Fowler and Sims show that every k-graph is completely determined by its k-coloured skeleton and collection of commuting squares. Here we give an explicit description of the k-graph associated to a given skeleton and collection of squares and ...
Aidan Sims   +10 more
core   +4 more sources

Jamming and percolation of parallel squares in single-cluster growth model

open access: yesCondensed Matter Physics, 2014
This work studies the jamming and percolation of parallel squares in a single-cluster growth model. The Leath-Alexandrowicz method was used to grow a cluster from an active seed site.
I.A. Kriuchevskyi   +3 more
doaj   +1 more source

Approximate Least Squares

open access: yes, 2013
We present a novel iterative algorithm for approximating the linear least squares solution with low complexity. After a motivation of the algorithm we discuss the algorithm's properties including its complexity, and we present theoretical results as well
Huemer, Mario   +2 more
core   +1 more source

Higgs squared

open access: yesJournal of High Energy Physics, 2023
Abstract We present a novel construction for a Higgs-VEV sensitive (HVS) operator, which can be used as a trigger operator in cosmic selection models for the electroweak hierarchy problem. Our operator does not contain any degrees of freedom charged under the SM gauge symmetries, leading to reduced tuning in the resulting models ...
Csaba Csáki   +3 more
openaire   +3 more sources

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