Results 81 to 90 of about 48,024 (309)

Joint power control and user grouping mechanism for efficient uplink non‐orthogonal multiple access‐based 5G communication: Utilising the Lèvy‐flight firefly algorithm

open access: yesIET Networks, EarlyView., 2023
We utilise a metaheuristic optimisation method, inspired by nature, called the Lévy‐flight firefly algorithm (LFA), to tackle the power regulation and user grouping in the NOMA systems. Abstract The non‐orthogonal multiple access strategies have shown promise to boost fifth generation and sixth generation wireless networks' spectral efficiency and ...
Zaid Albataineh   +4 more
wiley   +1 more source

Comparative Analysis of the Comfort of Children and Adolescents in Digital and Conventional Full-Arch Impression Methods: A Crossover Randomized Trial

open access: yesChildren
The aim of this study was to evaluate the comfort of children and adolescents with conventional full-arch dental impression methods compared to two intraoral scanners (iTeroTM and PrimescanTM).
Diego Serrano-Velasco   +4 more
doaj   +1 more source

El registro de entidades religiosas : órgano de tutela de las confesiones religiosas en españa

open access: yes, 2015
Tesis de la Universidad Alfonso X "El sabio"- Facultad de Estudios Sociales. Programa de Doctorado-Cuestiones actuales de Derecho Español e InternacionalBibliografíaTesis realizada por Yolanda Alonso Herranz; dirigida por Javier López de Goicoechea ...
Alonso Herranz, Yolanda
core  

Extent, characteristics and policy applications of Key Biodiversity Areas

open access: yesBiological Reviews, EarlyView.
ABSTRACT A global standard for the identification of Key Biodiversity Areas (KBAs) was published 10 years ago to provide a unified set of criteria for identifying ‘sites of significance for the global persistence of biodiversity’. We review the initiative's origins, the KBA identification process, characteristics of the current network, threats, policy
Stuart H. M. Butchart   +57 more
wiley   +1 more source

Accuracy Analysis of Digital Models from Intraoral Scanners and 3D-Printed Casts in Children and Teenagers

open access: yesChildren
Purpose: The aim was to analyze the accuracy of digital models and 3D-printed casts from full-arch digital impressions using two intraoral scanners (iTeroTM and PrimescanTM).
Diego Serrano-Velasco   +4 more
doaj   +1 more source

La casa de campo de la alameda de la condesa duquesa de benavente. estudio de la influencia de una biblioteca en la concrección de una obra

open access: yes, 2013
Tesis de la Universidad Alfonso X "El sabio"- Escuela Politécnica Superior. Doctorado en Arquitectura y Patrimonio.BibliografíaTesis realizada por María Isabel Pérez Hernández; Director Jesús Bermejo GodayEscuela Politécnica ...
Pérez Hernández, María Isabel
core  

Internalization of Management Systems and Eco‐Product Innovation: The More the Better?

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Environmental challenges demand urgent and strategic responses from firms. Eco‐product innovation (EPI) is a key approach to reducing environmental impact while preserving competitiveness. This research analyses the relationship between EPI and the internalization of management system (MS) certifications, focusing on ISO 9001, ISO 14001, and ...
Alfonso Hernandez‐Vivanco   +2 more
wiley   +1 more source

Fabricación de productos fertilizantes a partir de lixiviados tratados procedentes de procesos de compostaje de residuos orgánicos

open access: yes, 2011
Tesis de la Universidad Alfonso X "El sabio"- Escuela Politécnica Superior. Programa de Doctorado Ingeniería del Medio Ambiente. 2011BibliografíaTésis realizada por Rosalía Moreno Pérez; dirigida por Dr. Tomás García Martín, Dra.
Moreno Pérez, Rosalía
core  

Paying for Privilege: How Political Contributions Undermine Environmental Sustainability—And How Executive Contracting Can Restore Balance

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT We are interested in investigating whether firms use political donations as a license to neglect environmental sustainability. We further deepen the examination by exploring the role of executive contracting. Drawing on a wide range of data between 2002 and 2021 and a global sample, our findings confirm that firms use political contributions ...
Habiba Al‐Shaer   +3 more
wiley   +1 more source

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