Results 91 to 100 of about 331,272 (302)

Transport of Orbital-Angular-Momentum Entanglement through a Turbulent Atmosphere [PDF]

open access: yesarXiv, 2009
We demonstrate experimentally how orbital-angular-momentum entanglement of two photons evolves under influence of atmospheric turbulence. We find that the quantum channel capacity is surprisingly robust: Its typical horizontal decay distance is of the order of 2 kilometers, demonstrating the potential of photonic orbital angular momentum for free-space
arxiv  

Dynamic proofs of retrievability with low server storage [PDF]

open access: yesarXiv, 2020
Proofs of Retrievability (PoRs) are protocols which allow a client to store data remotely and to efficiently ensure, via audits, that the entirety of that data is still intact. A dynamic PoR system also supports efficient retrieval and update of any small portion of the data.
arxiv  

Proof of Reputation [PDF]

open access: yesarXiv, 2023
We present the new mining protocol Proof-of-Reputation (PoR) for decentralized Proof-of-Work (PoW) blockchains, in particular for Bitcoin. PoR combines the classical PoW with the new ingredient of cryptographic reputation. The same level of security compared to pure PoW can be achieved with a significant energy consumption reduction (of the order of 30\
arxiv  

Modelo para el diseño de laboratorios virtuales para la Universidad Estatal a Distancia [PDF]

open access: yes, 2017
Este documento resume los resultados parciales de investigación titulada “Propuesta técnico pedagógica para la creación de laboratorios virtuales en la UNED”. Esta es una investigación interdisciplinaria que reúne especialistas del Programa de Producción
Arias Ching, Paola   +4 more
core  

At the far end of everything: A likely Ahrensburgian presence in the far north of the Isle of Skye, Scotland

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT A Late Upper Paleolithic (LUP) site containing Ahrensburgian‐type stone tools has been discovered at South Cuidrach, Isle of Skye, Scotland. Together with a group of intertidal stone circular alignments also recently discovered on the island, this new evidence for the occupation of northern Scotland also represents the most northerly LUP site ...
Karen Hardy   +5 more
wiley   +1 more source

Investigación científica y práctica basada en la evidencia. Desarrollo de competencias en Grado y Postgrado de Ciencias de la Salud [PDF]

open access: yes, 2014
Es una necesidad que los profesionales de la salud egresen con competencias básicas en materia de investigación científica y que en la formación postgrado alcancen un mayor nivel de desarrollo en dichas competencias, para asegurar unos cuidados de la ...
Aguilera-Manrique, Gabriel   +6 more
core   +1 more source

A new preclinical sheep model of medial meniscus anterior root repair: Part 1—Quantitative morphology and relationships to adjacent structures

open access: yesKnee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose To analyse the quantitative morphology of the menisci, their roots and relations with a focus on the medial meniscus anterior root (MAR) as a basis for a preclinical model. Methods Data was obtained from 24 tibial plateaus of skeletally mature, female Merino ewes. The MAR attachment (MARA) was scanned with micro‐computed tomography and
Wei Liu   +5 more
wiley   +1 more source

A partner‐informed approach to prioritizing social risks for research in a learning health system

open access: yesLearning Health Systems, EarlyView.
Abstract Objective To prioritize social risks (individual‐level social and economic conditions) that may influence a person's health for inclusion in a national survey of Veterans Affairs (VA) healthcare system patients. Data Sources and Study Setting Quantitative ratings of candidate survey measures were obtained from a national Advisory Group of ...
Mayuree Rao   +10 more
wiley   +1 more source

The effects of using collaborative writing vs. peer review treatments on subsequent individual writings [PDF]

open access: yes, 2019
Los efectos tanto de la escritura colaborativa como de la revisión por pares se han investigado por separado sin comparar ambos enfoques. Este trabajo tiene como objetivo comparar el efecto que estos dos tratamientos tienen en una redacción posterior ...
Bueno-Alastuey, María Camino   +1 more
core  

Home - About - Disclaimer - Privacy