Results 121 to 130 of about 1,738,862 (302)

Testing for Mean-Coherent Regular Risk Spanning [PDF]

open access: yes
Coherent risk measures have received considerable attention in the recent literature.Coherent regular risk measures form an important subclass: they are empirically identifiable, and, when combined with mean return, they are consistent with second order ...
Melenberg, B., Polbennikov, S.Y.
core  

Falling pupil numbers and school closures: Setting a research agenda for a new era of precarity

open access: yesBritish Educational Research Journal, EarlyView.
Abstract This paper explores the significant phenomenon of decreasing pupil numbers in England due to lower birth rates and the impact of a school closure on a school community. It then discusses how the sociology of education might research this major issue.
Eleanor Fagan, Alice Bradbury
wiley   +1 more source

‘I was treated as a deficit’: Immigrant teachers' career progression in Australia

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Immigrant teachers have long been recruited through skilled and employer‐sponsored migration schemes to address teacher shortages in Australia, yet their career trajectories remain constrained by systemic inequities that limit their integration and professional development opportunities.
Ching Ting Tany Kwee   +2 more
wiley   +1 more source

A Low-Rate Multi-Level Voice/Video Transceiver for Personal Communications

open access: yes, 1995
A personal communication system (PCS) transceiver is proposed and investigated. A 4.8 kbit/s transformed binary pulse excited (TBPE) linear predictive speech codec, embedded source sensitivity-matched binary Bose-Chaudhuri-Hocquenghem (BCH) block error ...
Streit, J   +3 more
core   +1 more source

Propagation Properties of Partially Coherent Flat-Topped Beam Rectangular Arrays in Plasma and Atmospheric Turbulence

open access: yesPhotonics
Propagation properties represent a critical aspect of laser beams utilized in free space optical (FSO) communications. We examined the evolution characteristics of the electric field associated with partially coherent flat-topped beam rectangular arrays ...
Xinkai Ma   +8 more
doaj   +1 more source

‘More than information’: A social listening and platform architecture analysis of online special educational needs and disabilities discourse

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Parents of children with special educational needs and disabilities (SEND) increasingly seek information and support through online discussions, yet little is known about how architectural features of digital platforms shape the interactions and support that parents encounter. The paper makes two contributions: First, it develops and applies a
Alan Shaw, Patricia A. Shaw
wiley   +1 more source

Sequential optimization of adaptive arrays in coherent laser communications

open access: yes, 2013
In optical wireless communications, a channelmatched adaptive coherent receiver may be implemented using an array of receive apertures. After atmospheric channel fading estimation, several replicas of a message received through the atmosphere are ...
Kahn, J. M., Belmonte Molina, Aniceto
core   +1 more source

Tannic acid–metal biomaterials for skin repair: Principles, immune microenvironment modulation, and translational perspectives

open access: yesBMEMat, EarlyView.
Tannic acid–metal materials are emerging as versatile wound biomaterials, but their value depends on more than multifunctionality. This review maps how tannic acid alone, free metal ions, and coordinated TA–metal systems differ in design logic, immune‐microenvironment effects, and translational potential, offering a practical framework for choosing ...
Shahid Mahmood   +6 more
wiley   +1 more source

The Perils of Environmental, Social, and Governance (ESG) Controversies: Implications for a Firm's Financial and Nonfinancial Performance

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Although ESG controversies are on the rise, research investigating them yields contradictory findings. The paper provides resolutions to the debate through investigating (a) how ESG controversies influence firms' short‐term and long‐term financial performance; (b) how firms navigate ESG controversies' effect; and (c) how ESG controversies ...
Amalesh Sharma   +3 more
wiley   +1 more source

Coherence Scaling in Quantum Communication Protocols

open access: yesQuantum Information Processing
Abstract We investigate how quantum coherence scales and is redistributed in quantum communication protocols, us-ing superdense coding and quantum teleportation as paradigmatic case studies. Employing the relative entropyof coherence as a circuit-level resource measure, we show that multipartite resource states relevant to general-ized ...
Pedro Henrique Alvarez   +1 more
openaire   +2 more sources

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