Results 21 to 30 of about 1,456 (218)

The united geodetic vertical network of Latvia and Lithuania

open access: yesGeodesy and Cartography, 2012
A unified and continuous national vertical network is the back-bone for geodesy, cartography, civil engineering and global positioning. International institutions are working to reach homogenous and unified vertical datum all around the globe.
Ivars Aleksejenko   +8 more
doaj   +1 more source

The Geodetic Infrastructure of Ungheni District of the Republic of Moldova

open access: yesBulletin of the Polytechnic Institute of Jassy: Constructions, Architechture Section, 2021
Starting from 1999 a new geodetic reference system MOLDREF99 based on the ITRF97 and ETRS89 was established in Republic of Moldova. The realization of MOLDREF99 is the national GNSS Network with density about 1 point per 15 sq. km.
Chiriac Vasile, Nuca Dumitru
doaj   +1 more source

What Are the ‘Levels’ in Levels of Selection?

open access: yesThe British Journal for the Philosophy of Science
The levels of selection debate is generally taken to be a debate about how natural selection can occur at the various levels of biological organization. In this article, we argue that questions about levels of selection should be analysed separately from questions about levels of organization.
Eronen, Markus I., Ramsey, Grant
openaire   +1 more source

LAS HACIENDAS AUTONÓMICA Y LOCAL EN LA STC 31/2010 [PDF]

open access: yesRevista d'Estudis Autonòmics i Federals, 2011
The distribution of fi nancial powers within Spain’s federal structure remainsan unresolved constitutional question, as is the distribution of fi nancial resources.The lack of specifi c constitutional rules on this matter allows ...
Manuel Medina Guerrero
doaj  

STRUCTURALLY ADAPTIVE MATHEMATICAL MORPHOLOGY BASED ON NONLINEAR SCALE-SPACE DECOMPOSITIONS

open access: yesImage Analysis and Stereology, 2011
Standard formulation of morphological operators is translation invariant in the space and in the intensity: the same processing is considered for each point of the image.
Jesús Angulo, Santiago Velasco-Forero
doaj   +1 more source

Association of Craniofacial Patterns with the Curve of Spee and the Time Required for Orthodontic Levelling

open access: yesDentistry Journal, 2022
The curve of Spee (CoS) is an important parameter for an individualized treatment plan. The available information regarding a potential association of the depth of the curve of Spee with various skeletal craniofacial characteristics is conflicting and it
Annina Krüsi   +4 more
doaj   +1 more source

Influence of Technological Factors on Fatigue Properties of Steel Sheets

open access: yesCommunications, 2006
Treatment technology can influence the fatigue process positively or negatively. The paper analyzes the influence of cold levelling of strips from coils of steel grade E 700 TS (Re 700 MPa) on the fatigue crack initiation and the fatigue limit under one-
Marian Bursak, Otakar Bokuvka
doaj   +1 more source

Joint adjustment by CPIII precision trigonometric elevation control network assisted with precision levelling observation [PDF]

open access: yesE3S Web of Conferences, 2020
Using the precision trigonometric elevation instead of the precision levelling to build a CPⅢ elevation control network will greatly increase the speed of CPⅢ control network construction.
Jianzhang Li
doaj   +1 more source

On the Level

open access: yesIrish Mathematical Society Bulletin, 1987
Let R be an arbitrary ring with identity element. The level s(R) is the smallest integer n such that -1 is a sum of n squares in R. Define \(s(R)=\infty\) if -1 is not a sum of squares in R. The paper under review is a short survey of various results concerning the level of fields, commutative and non-commutative rings.
openaire   +2 more sources

Basic Principles of Hydrostatic Levelling

open access: yesGeoScience Engineering, 2018
The paper aims to introduce the distribution, history and the basic physical principles hydrostatic levelling. The principle of this method is based on known law of connected vessels filled with fluid.
Pospíšil Jiří, Dandoš Rostislav
doaj   +1 more source

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