Results 1 to 10 of about 4,432 (242)

Operational reliability assessment considering independency between wind power ramps and frequency sensitive loads [PDF]

open access: yesE3S Web of Conferences, 2021
With the increasing wind power penetration, power system frequency is more vulnerable especially when gust wind periods. Frequency control is used to restore system frequency back to the rated value.
Xiao Xiaolong   +3 more
doaj   +3 more sources

Self-rated health and its association with the individual’s activities of daily living: A cross-sectional study among elderly residing in an urban settlement [PDF]

open access: yesJournal of Family Medicine and Primary Care
Context: The phenomenon of population aging being inevitable, and the elderly being an asset to society by their skills and experience, their health and well-being is of paramount importance.
Sahoo Priyaranjan   +2 more
doaj   +2 more sources

A Frequency Independent Phase Shifter

open access: yesAcoustics, 2023
A frequency-independent phase shift is determined such that two phase shifted versions of a signal can be summed whereby the resulting amplitude spectrum is unchanged. A phase difference between two signals is thus defined which remains constant for all frequencies within a given range.
Máté Csanád   +2 more
openaire   +3 more sources

Interoperable Nanoparticle Sensor Capable of Strain and Vibration Measurement for Rotor Blade Monitoring

open access: yesSensors, 2021
Recent advances in nanomaterials technology create the new possibility to fabricate high performance sensors. However, there has been limitations in terms of multivariate measurable and interoperable sensors. In this study, we fabricated an interoperable
Soo-Hong Min   +4 more
doaj   +1 more source

AC characteristics of low-ohmic foil shunts influenced by eddy currents in the mounting body [PDF]

open access: yesJournal of Sensors and Sensor Systems, 2019
The requirements for precision current-sensing shunts are getting more sophisticated due to further development of fast switch-mode converters and other high-frequency applications.
M. Schönecker-Baußmann
doaj   +1 more source

Single-layer phase gradient mmWave metasurface for incident angle independent focusing

open access: yesScientific Reports, 2021
Metasurfaces allow the rapid development of compact and flat electromagnetic devices owing to their capability in manipulating the wavefront of electromagnetic waves.
Wonwoo Lee   +8 more
doaj   +1 more source

Psychometric Properties of the COVID-19 Pandemic Fatigue Scale: Cross-sectional Online Survey Study

open access: yesJMIR Public Health and Surveillance, 2022
BackgroundPandemic fatigue is defined as feelings of demotivation to follow preventive measures against COVID-19, together with decreased trust in government and frequency of information-seeking behaviors ...
Carmen Rodriguez-Blazquez   +4 more
doaj   +1 more source

Analytical Comparison on Inductive Wireless Power Transfer System for Biomedical Devices [PDF]

open access: yesEngineering and Technology Journal, 2018
This paper presents a comparative analysis for the four basic topologies of inductive link wireless power transmission, thereby allowing designers to select the most appropriate topology according to the requirements of the application.
Suhad Jasim
doaj   +1 more source

The use of nurse‐led care intervention to improve self‐care abilities subsequently decreasing readmission in multimorbid hospitalized patients: A quasi‐experimental study in a real‐world setting

open access: yesNursing Open, 2023
Aim Nurse‐led care aims to optimize the discharge preparation with a focus on increasing patients' independency and self‐care abilities. This study compared patients' improvements of self‐care abilities and frequency of readmission rate between nurse‐led
Lukas Faessler   +10 more
doaj   +1 more source

Space and Frequency Diversity Characterization of Mobile GNSS Receivers in Multipath Fading Channels

open access: yesTsinghua Science and Technology, 2020
Diversity reception of multipath Global Navigation Satellte System (GNSS) signals offers a new insight into carrier phase-based high-precision positioning.
Peirong Fan, Xiaowei Cui, Mingquan Lu
doaj   +1 more source

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