Results 11 to 20 of about 809,574 (244)

Dielectric resonator bandstop filters [PDF]

open access: yes, 2011
Dielectric resonators have been widely employed in wireless and satellite communication systems due to their inherently large Q allowing them to fashion low loss and narrow bandwidth filters.
Chan, Richard Kayip
core   +6 more sources

Estimation of the angular position of a two–wheeled balancing robot using a real IMU with selected filters [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2022
A low–cost measurement system using filtering of measurements for two–wheeled balancing robot stabilisation purposes has been addressed in this paper. In particular, a measurement system based on gyroscope, accelerometer, and encoder has been considered.
Krzysztof Laddach   +2 more
doaj   +1 more source

Design &implementation of complex-valued FIR digital filters with application to migration of seismic data [PDF]

open access: yes, 2006
One-dimensional (I-D) and two-dimensional (2-D) frequency-space seismic migration FIR digital filter coefficients are of complex values when such filters require special space domain as well as wavenumber domain characteristics. In this thesis, such FIR
Mousa, Wail Abdul-Hakim
core   +6 more sources

Assessing the anti-fungal efficiency of filters coated with zinc oxide nanoparticles [PDF]

open access: yesRoyal Society Open Science, 2017
Air filters support fungal growth, leading to generation of conidia and volatile organic compounds, causing allergies, infections and food spoilage. Filters that inhibit fungi are therefore necessary.
Stephen Decelis   +5 more
doaj   +1 more source

An Electroactive Filter with Tunable Porosity Based on Glycolated Polythiophene

open access: yesSmall Science, 2022
The porosity of filters is typically fixed; thus, complex purification processes require application of multiple specialized filters. In contrast, smart filters with controllable and tunable properties enable dynamic separation in a single setup. Herein,
Johannes Gladisch   +6 more
doaj   +1 more source

Integrated Care Search: development and validation of a PubMed search filter for retrieving the integrated care research evidence

open access: yesBMC Medical Research Methodology, 2020
Background Integrated care is an increasingly important principle for organising healthcare. Integrated care models show promise in reducing resource wastage and service fragmentation whilst improving the accessibility, patient-centredness and quality of
Raechel A. Damarell   +3 more
doaj   +1 more source

Influence of additional filters on radiation dose during chest radiography.

open access: yesJournal of Kufa-Physics, 2023
The goal of this study was to examine the impact of using additional aluminum (Al) and copper (Cu) filters on radiation dose during the adult chest x-ray examination.
Sadeq Al-Murshedi, Ali Mohammed Ali
doaj   +1 more source

The Influence of Filters on EEG-ERP Testing: Analysis of Motor Cortex in Healthy Subjects

open access: yesSensors, 2021
The raw EEG signal is always contaminated with many different artifacts, such as muscle movements (electromyographic artifacts), eye blinking (electrooculographic artifacts) or power line disturbances.
Ilona Karpiel   +3 more
doaj   +1 more source

Ka Band-pass Filter Based on SIW Technology for Wireless Communications

open access: yesJournal of Telecommunications and Information Technology, 2021
The paper proposes a new third-order Chebyshev bandpass filter based on the substrate integrated waveguide (SIW) manufacturing technology using an inductive iris and a defected ground structure (DGS) station to resonate in the Ka frequency band ...
Mehdi Damou   +4 more
doaj   +1 more source

Seeking Traces of Filters and Amplifiers as Pre-service Teachers Perform Their Pedagogical Content Knowledge

open access: yesScience Education International, 2023
This study examined how filters and amplifiers affect pre-service science teachers’ pedagogical content knowledge (PCK) in a human and environment unit. The redefined consensus model for PCK and decision-making framework for identifying how personal and ...
Mehmet Şen , Betül Demirdöğen
doaj   +1 more source

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