Results 21 to 30 of about 336,791 (271)

Iteration of Operators with Contractive Mutual Relations of Kannan Type

open access: yesMathematics, 2022
Inspired by the ideas of R. Kannan, we define the new concepts of mutual Kannan contractivity and mutual contractivity between two self-maps on a metric space that generalize the concepts of the Kannan map and contraction.
Ram N. Mohapatra   +3 more
doaj   +1 more source

Scots pine (Pinus sylvestris L.) in an ore-mining pits and dumps of soda production in the Donetsk region

open access: yesІнтродукція Рослин, 2013
The features of self-spread of Scots pine (Pinus sylvestris L.) on different elements of man-made landscape in ore extraction and production of soda ash in the north of Donetsk region are studied.
I.I. Korshikov, G.A. Pasternak
doaj   +1 more source

COMPARISON BETWEEN TWO GENERIC 3D BUILDING RECONSTRUCTION APPROACHES – POINT CLOUD BASED VS. IMAGE PROCESSING BASED [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
This paper compares two generic approaches for the reconstruction of buildings. Synthesized and real oblique and vertical aerial imagery is transformed on the one hand into a dense photogrammetric 3D point cloud and on the other hand into ...
D. Dahlke, M. Linkiewicz
doaj   +1 more source

Spatial reasoning with augmented points: Extending cardinal directions with local distances

open access: yesJournal of Spatial Information Science, 2012
We present an approach for supplying existing qualitative direction calculi with a distance component to support fully fledged positional reasoning. The general underlying idea of augmenting points with local reference properties has already been applied
Reinhard Moratz, Jan Oliver Wallgrün
doaj   +1 more source

Reasoning about Qualitative Direction and Distance between Extended Objects using Answer Set Programming [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2019
In this thesis, we introduce a novel formal framework to represent and reason about qualitative direction and distance relations between extended objects using Answer Set Programming (ASP).
Yusuf Izmirlioglu
doaj   +1 more source

The topological structure of (homogeneous) spaces and groups with countable cs∗-character

open access: yesApplied General Topology, 2004
In this paper we introduce and study three new cardinal topological invariants called the cs∗-, cs-, and sb-characters. The class of topological spaces with countable cs∗-character is closed under many topological operations and contains all N-spaces and
Taras Banak, Lubomyr Zdomskyi
doaj   +1 more source

Far points and discretely generated spaces

open access: yes, 2018
We give a partial solution to a question by Alas, Junqueria and Wilson by proving that under PFA the one-point compactification of a locally compact, discretely generated and countably tight space is also discretely generated.
Dow, Alan   +1 more
core   +1 more source

Juan Rodríguez del Padrón au Concile de Bâle

open access: yesAtalaya, 2013
This article aims to exhume biographical data concerning an episode from the life of Juan Rodríguez del Padrón, in other words evidences of his stay in Basel and its function to the Cardinal Cervantes.
Florence Serrano
doaj   +1 more source

Syncope as the Clinical Presentation of Pulmonary Thromboembolism [PDF]

open access: yesJournal of Tehran University Heart Center, 2007
Pulmonary thromboembolism (PTE) has a wide spectrum of presentations, and its cardinal manifestations include chest pain, dyspnea, and syncope. Syncope as an initial presentation of PTE occurs in 10-14% of patients and is not restricted to massive PTEs ...
Abbasali Rafighdoust   +11 more
doaj   +2 more sources

Combinatorial optimization over two random point sets [PDF]

open access: yes, 2011
We analyze combinatorial optimization problems over a pair of random point sets of equal cardinal. Typical examples include the matching of minimal length, the traveling salesperson tour constrained to alternate between points of each set, or the ...
Barthe, Franck, Bordenave, Charles
core  

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