Results 21 to 30 of about 12,505,419 (302)

Time Series Impact Through Topic Modeling

open access: yesIEEE Access, 2022
A time-series of numerical data and a sequence of time-ordered documents are often correlated. This paper aims at modeling the impact that the underlying themes discussed in the text data have on the time series.
Julian Cendrero   +3 more
doaj   +1 more source

Impact of “just-in-time” simulation training for COVID-19 pandemic preparedness

open access: yesThe Asia Pacific Scholar, 2022
Introduction: Personal protection in aerosol-generating procedures is an important skill to safely deliver care to patients in the COVID-19 pandemic.
Nicola Ngiam   +2 more
doaj   +1 more source

Three-Dimensional Fixed-Time Cooperative Guidance Law With Impact Angle Constraint and Prespecified Impact Time

open access: yesIEEE Access, 2021
In this paper, by utilizing fixed-time control technique and a leader-follower control scheme, a three-dimensional (3-D) cooperative guidance law is developed to tackle impact angle constrained simultaneous arrival problem. Firstly, in the line-of-sight (
Mu Lin   +4 more
doaj   +1 more source

Impact of COVID-19 on the antenatal care services utilization in the region of Guelmim Oued Noun, Morocco

open access: yesJournal of Public Health in Africa, 2023
Background: The COVID-19 pandemic has seriously impacted access to healthcare facilities across the world, but there is little evidence of how the pandemic influences the use of essential healthcare in the world. Objective: This study aimed to evaluate
Jamal Tikouk   +2 more
doaj   +1 more source

Time discretization of vibro‐impact [PDF]

open access: yesPhilosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2001
Summary: We consider vibro-impact problems, i.e. mechanical systems with a finite number of degrees of freedom submitted to perfect unilateral constraints. The dynamics is basically described by a second-order measure differential inclusion for the unknown position completed with a constitutive impact law.
openaire   +2 more sources

Role of offset during drop-on-drop impact dynamics on a superhydrophobic substrate

open access: yesResults in Surfaces and Interfaces, 2023
Droplet impacting on another deposited droplet (drop-on-drop) is present in various applications. However, the actual impact configuration deviates from completely aligned case.
Ankush Kumar Jaiswal, Sameer Khandekar
doaj   +1 more source

Fixed-Time Circular Impact-Time Guidance with Look Angle Constraint

open access: yesAerospace, 2022
A fixed-time nonlinear circular guidance law that satisfies the impact time constraint is proposed. By utilizing the geometric principle that the length of a circular arc connecting the missile and the target can be analytically calculated, the exact ...
Xiangxiang Li   +4 more
doaj   +1 more source

Impact of Screen Time on Sleep Quality

open access: yesIndian Journal of Psychiatric Nursing, 2021
Background: Technology that years ago we could only dream of or read in science fiction novels, which we then actually created with much hope in their power of connecting people, has become a tool of gratification.
Renju Sussan Baby   +6 more
doaj   +1 more source

Impact of time-variant turbulence behavior on prediction for adaptive optics systems [PDF]

open access: yes, 2019
For high contrast imaging systems, the time delay is one of the major limiting factors for the performance of the extreme adaptive optics (AO) sub-system and, in turn, the final contrast.
Doelman, Niek   +2 more
core   +3 more sources

Global health impact, priority and time

open access: yesDeveloping World Bioethics, 2023
AbstractThis paper addresses normative issues that arise in relation to indicators and measures of health impact. With inspiration from Nicole Hassoun's recent proposal, the paper argues and illustrates that those interested in measuring global health impact face questions about how to prioritize among those with ill‐health, how to weigh benefits to ...
openaire   +2 more sources

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