Results 31 to 40 of about 5,361,409 (316)

A Federated Reference Structure for Open Informational Ecosystems

open access: yesJournal of Interactive Media in Education, 2016
The paper describes the concept of a federated ecosystem for Open Educational Resources (OER) in the German education system. Here, a variety of OER repositories (ROER) (Muuß-Merholz & Schaumburg, 2014) and reference platforms have been established in ...
Richard Heinen   +4 more
doaj   +1 more source

Study of the Impact of Traffic Flows on the ATC Actions

open access: yesAerospace, 2022
It has always been a topic of great interest in air transport management to be able to estimate controller workload. So far, research has not had the opportunity to make use of real data on the controller’s actions.
Guillermo Gutiérrez Teuler   +4 more
doaj   +1 more source

Spectral Analysis of the Martian Atmospheric Turbulence: InSight Observations

open access: yesGeophysical Research Letters, 2022
In this study, we perform spectral analysis of Martian near‐surface turbulence using the in‐situ observations by NASA's InSight lander on Mars.
Orkun Temel   +5 more
doaj   +1 more source

Multisite Performance Evaluation of the cobas 5800 System and Comparison to the cobas 6800/8800 Systems for Quantitative Measurement of HBV, HCV, and HIV-1 Viral Load

open access: yesMicrobiology Spectrum, 2022
The cobas 5800 System (“cobas 5800”) is a new low- to mid-throughput PCR-based nucleic acid testing system which performs both qualitative and quantitative testing, including viral load (VL) determination.
Jakob Tschäpe   +7 more
doaj   +1 more source

MulseOnto: a Reference Ontology to Support the Design of Mulsemedia Systems [PDF]

open access: yesJournal of Universal Computer Science, 2019
Designing a mulsemedia|multiple sensorial media|system entails first and foremost comprehending what it is beyond the ordinary understanding that it engages users in digital multisensory experiences that stimulate other senses in addition to sight and ...
Estêvão Saleme   +4 more
doaj   +3 more sources

Einstein's accelerated reference systems and Fermi-Walker coordinates

open access: yes, 2017
We show that the uniformly accelerated reference systems proposed by Einstein when introducing acceleration in the theory of relativity are Fermi-Walker coordinate systems.
Llosa, Josep
core   +1 more source

ESTIMATION OF THE ASYMMETRIC VERTICAL VARIATION OF THE SOUTHERN AND NORTHERN HEMISPHERES OF THE EARTH

open access: yesГеодинамика и тектонофизика, 2015
In previous studies, the northern hemisphere of the Earth is considered to be in compression while the southern one is in expansion. In this study, based on three different methods, we calculate average vertical variations of the two hemispheres from ...
Wen-Bin Shen Wen-Bin Shen   +3 more
doaj   +1 more source

Restoration of tropical dry forest: an analysis of constraints and successes across a highly threatened biome

open access: yesFrontiers in Environmental Science
The tropical dry forest (TDF) biome has undergone a diversity of severe disturbances, with resulting transformations and continued pressures making this biome type one of the Earth’s most threatened.
Natalia Mesa-Sierra   +3 more
doaj   +1 more source

Closed-loop Reference Models for Output-Feedback Adaptive Systems

open access: yes, 2012
Closed-loop reference models have recently been proposed for states accessible adaptive systems. They have been shown to have improved transient response over their open loop counter parts. The results in the states accessible case are extended to single
Annaswamy, Anuradha M.   +2 more
core   +1 more source

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