Results 21 to 30 of about 958,666 (175)

Introduction of a pilot study [PDF]

open access: yesKorean Journal of Anesthesiology, 2017
A pilot study asks whether something can be done, should the researchers proceed with it, and if so, how. However, a pilot study also has a specific design feature; it is conducted on a smaller scale than the main or full-scale study. In other words, the
Junyong In
doaj   +1 more source

Design and Feasibility of a Randomized Controlled Pilot Trial to Reduce Exposure and Cognitive Risk Associated With Advanced Glycation End Products in Older Adults With Type 2 Diabetes

open access: yesFrontiers in Nutrition, 2021
Introduction: Advanced glycation end products (AGEs) in diet and serum are positively correlated with chronic conditions such as type 2 diabetes and cognitive decline.
Roni Lotan   +17 more
doaj   +1 more source

Channel Charting Aided Pilot Reuse for Massive MIMO Systems with Spatially Correlated Channels [PDF]

open access: yes, 2022
Massive multiple-input multiple-output (mMIMO) technology is a way to increase the spectral efficiency of machine-type communications (MTC). To exploit the benefits from large antenna arrays, accurate channel estimation through pilot signals is needed. Massive MTC systems cannot avoid pilot reuse due to the enormous numbers of connected devices.
arxiv   +1 more source

Joint Pilot Design and Channel Estimation using Deep Residual Learning for Multi-Cell Massive MIMO under Hardware Impairments [PDF]

open access: yesarXiv, 2021
In multi-cell massive MIMO systems, channel estimation is deteriorated by pilot contamination and the effects of pilot contamination become more severe due to hardware impairments. In this paper, we propose a joint pilot design and channel estimation based on deep residual learning in order to mitigate the effects of pilot contamination under the ...
arxiv  

A pilot feasibility cluster randomised controlled trial of screening and brief alcohol intervention to prevent hazardous drinking in young people aged 14–15 years in a high school setting (SIPS JR-HIGH)

open access: yesPublic Health Research, 2014
Background: Approximately 33% of 15- to 16-year-olds in England report alcohol intoxication in the past month. This present work builds on the evidence base by focusing on Alcohol Screening and Brief Intervention (ASBI) to reduce hazardous drinking in ...
Dorothy Newbury-Birch   +16 more
doaj   +1 more source

Testing New Solutions for Self Inspection and Quality Checks in the Real World Workshop

open access: yesProceedings, 2017
This workshop carries on a series of workshops presented at Sustainable Places in 2015 and 2016 building upon the discussions surrounding the innovation within the project. ACCEPT.
Jason Page, Manon Brancart
doaj   +1 more source

An Adaptive Pilot Model with Reaction Time-Delay [PDF]

open access: yesarXiv, 2022
Practical adaptive control implementations where human pilots coexist in the loop are still uncommon, despite their success in handling uncertain dynamical systems. This is owing to their special nonlinear characteristics which lead to unfavorable interactions between pilots and adaptive controllers.
arxiv  

On the Pilot Contamination Attack in Multi-Cell Multiuser Massive MIMO Networks [PDF]

open access: yesIEEE Transactions on Communications, 2020, 2020
In this paper, we analyze pilot contamination (PC) attacks on a multi-cell massive multiple-input multiple-output (MIMO) network with correlated pilots. We obtain correlated pilots using a user capacity-achieving pilot sequence design. This design relies on an algorithm which designs correlated pilot sequences based on signal-to-interference-plus-noise
arxiv   +1 more source

From Novice to Skilled: RL-based Shared Autonomy Communicating with Pilots in UAV Multi-Task Missions [PDF]

open access: yes, 2023
Multi-task missions for unmanned aerial vehicles (UAVs) involving inspection and landing tasks are challenging for novice pilots due to the difficulties associated with depth perception and the control interface. We propose a shared autonomy system, alongside supplementary information displays, to assist pilots to successfully complete multi-task ...
arxiv   +1 more source

Super Placebos: A Feasibility Study Combining Contextual Factors to Promote Placebo Effects

open access: yesFrontiers in Psychiatry, 2021
Background: Ample evidence demonstrates that placebo effects are modulated by contextual factors. Few interventions, however, attempt to combine a broad range of these factors.
Jay A. Olson   +5 more
doaj   +1 more source

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