Results 81 to 90 of about 859 (275)

Geodetic metrizations of graphs

open access: yesDiscrete Mathematics, 1999
A graph can be metrized by assigning a length to each of its edges. Such a graph is said to be geodetic if for each pair of vertices there is a unique geodesic joining them. The paper starts with proofs that every graph can be metrized in such a way that there are unique geodesics, each of which is a geodesic in the usual metrization with unit edge ...
Frank Rhodes, Robert A. Melter
openaire   +3 more sources

An alternative to Bing's generalization of Urysohn's metrization theorem [PDF]

open access: yes, 1980
We show that the General Metrization Problem posed by the advent of Urysohn's Theorem has solutions other than those in Bing's Theorem and its generalizations, and give a theorem that uses no counterpart to Bing's discreteness or (any of its ...
Hung, H.H.
core   +1 more source

Hyperactive KIF5A in Neurodegeneration

open access: yesCytoskeleton, EarlyView.
ABSTRACT The highly polarised morphology of neurons and the sheer length of their axons make transport of cargoes throughout the cell a formidable task. Decades of evidence obtained from genetic studies on patients and animal models highlight deficits in axonal transport as a recurrent cause, or early contributing factor, in a plethora of ...
David Villarroel‐Campos   +1 more
wiley   +1 more source

A Multilevel Framework of Employee Environmental Initiatives: The Role of Departmental Climate, Departmental Management's Green Leadership, and Corporate Environmental Responsibility

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This study develops a multilevel framework to examine how employees' discretionary environmental initiatives are shaped by organizational and departmental contexts. Using survey data from 150 employees across 25 organizations, we integrate organizational climate and leadership theories to investigate the effects of Corporate Environmental ...
Yousef Eiadat
wiley   +1 more source

Metrization Theorem for Space-Times: From Urysohn’s Problem towards Physically Useful Constructive Mathematics [PDF]

open access: yes, 2010
In the early 1920s, Pavel Urysohn proved his famous lemma (sometimes referred to as first non-trivial result of point set topology ). Among other applications, this lemma was instrumental in proving that under reasonable conditions, every topological ...
Vladik Kreinovich, Kreinovich, Vladik
core   +1 more source

Financial Health and Environmental Transparency in the Catalan Pharmaceutical Sector (2019–2023)

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This study examines the relationship between financial health (2019–2023) and the transparency of environmental information disclosure in leading Catalan pharmaceutical companies. Based on an economic–financial analysis of financial statements and environmental information reported in accordance with the European Sustainability Reporting ...
Núria Arimany‐Serrat   +3 more
wiley   +1 more source

A non-metrizable space whose countable power is 𝜎-metrizable [PDF]

open access: yesProceedings of the American Mathematical Society, 1997
We answer a question of A.V. Arhangel’skii by finding a non-metrizable space X X such that
openaire   +2 more sources

Metrization Theorem for Uniform Loops with the Invertibility Property

open access: yes, 2017
In this paper, we have proved a metrization theorem that gives the sufficient conditions for a uniform IP-loop X to be metrizable by a left-invariant metric.
Beáta Stehlíková   +2 more
core   +1 more source

Left atrial function in uraemic patients: Four‐dimensional automatic left atrial quantitative technology study

open access: yesESC Heart Failure, Volume 12, Issue 2, Page 1316-1325, April 2025.
Abstract Objective This study aimed to evaluate the utility of left atrial volume and function in uraemic patients using four‐dimensional automatic left atrial quantification (4D auto LAQ) technology. Methods Thirty‐four undialysed uraemic patients (U‐ND group), 60 dialysed uraemic patients (U‐D group), and 32 healthy volunteers (N group) were enrolled
Bing Li, Meihua Chen, Xuning Huang
wiley   +1 more source

On metrizability of the free monoids

open access: yesDiscrete Mathematics, 1976
AbstractA complete solution is given of the problem of S. Marcus concerning the construction of a “better” distance in the free monoids from the viewpoint of measuring the difference of contextual behaviour with respect to a given language.
openaire   +2 more sources

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