Results 1 to 10 of about 289,210 (100)

Supervision of a self-driving vehicle unmasks latent sleepiness relative to manually controlled driving

open access: yesScientific Reports, 2021
Human error has been implicated as a causal factor in a large proportion of road accidents. Automated driving systems purport to mitigate this risk, but self-driving systems that allow a driver to entirely disengage from the driving task also require the
Erin E. Flynn-Evans   +12 more
doaj   +1 more source

Strategies to Limit Cognitive Impairments under Sleep Restriction: Relationship to Stress Biomarkers

open access: yesBrain Sciences, 2022
Adding relaxation techniques during nap or auditory stimulation of EEG slow oscillation (SO) during nighttime sleep may limit cognitive impairments in sleep-deprived subjects, potentially through alleviating stress-releasing effects.
Danielle Gomez-Merino   +14 more
doaj   +1 more source

Contact pressure analysis of pin-loaded lug with clearance

open access: yesAdvances in Mechanical Engineering, 2022
In engineering design, none of the existing models for calculating the contact pressure in pin-loaded lug is fully compatible with the actual working conditions.
Yanmin Li   +3 more
doaj   +1 more source

Healthcare provider and medical cannabis patient communication regarding referral and medication substitution: the Canadian context

open access: yesJournal of Cannabis Research, 2022
Background Patients use medical cannabis for a wide array of illnesses and symptoms, and many substitute cannabis for pharmaceuticals. This substitution often occurs without physician oversight, raising patient safety concerns.
Alexis Holman   +5 more
doaj   +1 more source

Effect of cylindrical longitudinal grinding process on surface integrity of 18CrNiMo7–6 steel

open access: yesJin'gangshi yu moliao moju gongcheng, 2022
In order to explore the influence of the grinding process parameters on the surface roughness and surface layer residual stress of 18CrNiMo7–6 steel, the cylindrical longitudinal grinding experiment was carried out by using an end cylindrical grinder ...
Haoyang ZHU   +4 more
doaj   +1 more source

Sleep and PTSD in the Military Forces: A Reciprocal Relationship and a Psychiatric Approach

open access: yesBrain Sciences, 2021
Sleep disturbances are well-recognised symptoms of Post-Traumatic Stress Disorder (PTSD). This review updates knowledge regarding the relationship between sleep during deployment, combat-related trauma, and PTSD in military personnel, from which the ...
Emeric Saguin   +4 more
doaj   +1 more source

Determination of Local Stresses and Strains within the Notch Strain Approach: Efficient Implementation of Notch Root Approximations

open access: yesApplied Sciences, 2021
An estimation of the elastic-plastic stress state using elasticity-theoretical input data is an essential part of the service life estimation with the local strain approach in general and a German guideline based on it, in particular. This guideline uses
Ralf Burghardt   +3 more
doaj   +1 more source

Determination of Local Stresses and Strains within the Notch Strain Approach: The Efficient and Accurate Calculation of Notch Root Strains Using Finite Element Analysis

open access: yesApplied Sciences, 2021
For the service life estimation of metallic components under cyclic loading according to strain-based approaches, a simulation of the elastic-plastic stress–strain path at the point of interest is necessary.
Lukas Masendorf   +3 more
doaj   +1 more source

Finite-element method for the analysis of surface stress concentration factor and relative stress gradient for machined surfaces [PDF]

open access: yesMechanical Sciences, 2023
Surface topography is an important parameter for evaluating the quality of surface machining, and the stress concentrations produced at notches can have a profound effect on the fatigue life of notched components. The stress concentration factor (SCF, Kt)
G. Xu   +11 more
doaj   +1 more source

Reconfigurations in brain networks upon awakening from slow wave sleep: Interventions and implications in neural communication

open access: yesNetwork Neuroscience, 2023
Sleep inertia is the brief period of impaired alertness and performance experienced immediately after waking. Little is known about the neural mechanisms underlying this phenomenon.
Cassie J. Hilditch   +9 more
doaj   +1 more source

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