Results 41 to 50 of about 12,398 (276)

An Alternative Approach to Spontaneous Photon Triplets Generation

open access: yesAdvanced Physics Research, EarlyView.
Day by day, communication and computing technologies are progressing at a lightning speed, which is particularly true of the quantum version of these technologies (QIST). Increasingly, these technologies are emerging from unusual and sometimes bewildering quantum optical effects, which are based on exotic quantum physical theories.
Serge Gauvin
wiley   +1 more source

Conditions for interoperability [PDF]

open access: yes, 2005
Interoperability for information systems remains a challenge both at the semantic and organisational levels. The original three-level architecture for local databases needs to be replaced by a categorical four-level one based on concepts, constructions ...
Heather, Michael, Rossiter, Nick
core  

Solutions of Adler's lattice equation associated with 2-cycles of the Backlund transformation

open access: yes, 2007
The BT of Adler's lattice equation is inherent in the equation itself by virtue of its multidimensional consistency. We refer to a solution of the equation that is related to itself by the composition of two BTs (with different Backlund parameters) as a ...
Adler V E   +14 more
core   +2 more sources

Commutativity preserving maps

open access: yesLinear Algebra and its Applications, 2008
This is a well-written paper devoted to the problem of characterizing maps preserving commutativity, one of the most studied linear preserver problems. Let \({\mathcal A}\) and \({\mathcal B}\) be two (associative) algebras over a field \({\mathbb F}\).
openaire   +1 more source

Making teaching an attractive profession: What are the challenges and opportunities for minority ethnic teachers in England?

open access: yesBritish Educational Research Journal, EarlyView.
Abstract This paper explores the challenges and opportunities surrounding the recruitment and retention of minority ethnic teachers in England. Drawing on interview data from 33 teachers and school leaders of diverse ethnic backgrounds, it investigates whether racialised barriers identified in earlier research have shifted in the current context of ...
Antonina Tereshchenko   +5 more
wiley   +1 more source

Some Common Fixed Point Theorems in Partially Ordered Sets

open access: yesJournal of Applied Mathematics, 2020
The purpose of this paper is to prove some new fixed point theorem and common fixed point theorems of a commuting family of order-preserving mappings defined on an ordered set, which unify and generalize some relevant fixed point theorems.
Khadija Bouzkoura, Said Benkaddour
doaj   +1 more source

Linear maps preserving commutativity

open access: yesLinear Algebra and its Applications, 1987
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Choi, M.D., Jafarian, A.A., Radjavi, H.
openaire   +1 more source

‘The best year’/‘I struggled with everything’: Widening participation experiences of pandemic online learning

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Improving retention and graduate outcomes for students from a widening participation (WP) background is key to achieving more equitable outcomes. However, evidence suggests WP students experienced different challenges than their peers during the COVID‐19 pandemic.
Wilhelmiina Toivo   +4 more
wiley   +1 more source

A pipeline crisis or a sustainability crisis? Local and national succession planning for headteachers in England

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Recruiting and retaining school leaders is a challenge in many systems worldwide. Previous research has identified three distinct ways in which succession planning can be conceptualised and approached: a ‘pipeline’ approach seeks to match supply and demand for the posts that need filling; a ‘pool’ strategy involves proactively identifying and ...
Toby Greany   +3 more
wiley   +1 more source

Fixed point results of Altman integral type mapping in S-metric spaces

open access: yesInternational Journal of Analysis and Applications, 2016
In this article, we introduce the concept of ϕ-weakly commuting self-mappings pairs in $S$-metric space. Using this idea we establish a common fixed point theorem of Altman integral type for four self-mappings in the context of $S$-metric space.
Mujeeb Ur Rahman   +2 more
doaj   +2 more sources

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