Results 131 to 140 of about 146,196 (303)

Electronically tunable bandpass filter

open access: yes, 1990
An electronically tunable bandpass filter is presented. It is a combline filter realized in microstrip form. The filter is made tunable by using the variable capacitance of a GaAs fet (or of a varactor). With the use of this technique it is possible to achieve relative bandwidth from 8% to 30%, a tuning bandwidth 'up to 50% and a center frequency up to
Bianchi, G., Pinto, G.
openaire   +2 more sources

Fringe Science: Defringing CCD Images with Neon Lamp Flat Fields

open access: yes, 2012
Fringing in CCD images is troublesome from the aspect of photometric quality and image flatness in the final reduced product. Additionally, defringing during calibration requires the inefficient use of time during the night to collect and produce a ...
Howell S. B.   +3 more
core   +1 more source

Calibration‐Free Electromyography Motor Intent Decoding Using Large‐Scale Supervised Pretraining

open access: yesAdvanced Intelligent Systems, EarlyView.
Calibration‐free electromyography motor intent decoding is enabled through large‐scale supervised pretraining across heterogeneous datasets. A Spatially Aware Feature‐learning Transformer processes variable channel counts and electrode geometries, allowing transfer across users and recording setups. On a held‐out benchmark, fine‐tuned cross‐user models
Alexander E. Olsson   +3 more
wiley   +1 more source

Discrete Fourier Transform Filters as Business Cycle Extraction Tools: An Investigation of Cycle Extraction Properties and Applicability of ‘Gibbs’ Effect [PDF]

open access: yes, 2008
The purpose of this article is to investigate the ability of an assortment of frequency domain bandpass filters proposed in the economics literature to extract a known periodicity.
Foster, John   +2 more
core  

Electroencephalogram‐Driven Recognition of Parkinson's Disease Through a Mycelium‐Inspired Memristive Reservoir Computing Circuit

open access: yesAdvanced Intelligent Systems, EarlyView.
This work presents a bio‐inspired computing framework for Parkinson's disease analog recognition using electroencephalogram signals. Temporally encoded EEG features stimulate a mycelium‐inspired memristive reservoir, where disease‐related patterns emerge through physical spatiotemporal dynamics.
Ioannis K. Chatzipaschalis   +5 more
wiley   +1 more source

Lymphatic Abnormalities in Noonan Syndrome Extend Beyond Clinically Apparent Disease

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Lymphatic disease represents a well‐described manifestation of Noonan syndrome (NS), yet the full phenotypic spectrum remains incompletely characterized, especially in asymptomatic individuals. We conducted a cross‐sectional study including 10 individuals with NS (four with peripheral lymphedema and six without) and 10 age‐ and sex‐matched ...
Inger Norlyk Sheyanth   +7 more
wiley   +1 more source

Spatial Cell Death and Oxidative Stress Dynamics in Gas Plasma‐Treated Tumor Tissues

open access: yesAdvanced NanoBiomed Research, EarlyView.
Schematic representation of the four experimental models to study tissue penetration and oxidation. Four tissue models were used. Human pancreatic cancer cells were grown on the chorioallantois membrane of chicken embryos and gas plasma‐treated in ovo, murine colorectal tumor tissue was gas plasma‐exposed ex vivo, murine squamous cell carcinoma cells ...
Anke Schmidt   +4 more
wiley   +1 more source

Design Broad Bandwidth Microwave Bandpass Filter Of 10 Ghz Operating Frequency Using HFSS [PDF]

open access: yes, 2017
Microwave bandpass filter is the essential part in microwave circuits and wireless communication systems. This paper presents a new designing and simulation of broad bandwidth,low losses microwave bandpass filter operating at 10 GHz frequency using ...
Jasim, S. E., Mohamad Ashry, Jusoh
core  

Recent Advances in Stimulated Brillouin Scattering in Integrated Photonics

open access: yesAdvanced Physics Research, EarlyView.
This review systematically surveys recent advances in stimulated Brillouin scattering (SBS) within integrated photonics. It begins by elucidating the fundamental mechanisms of stimulated coupling between photons and acoustic phonons in nanoscale waveguides, enhanced by the photoelastic and moving boundary effects.
Songyue Liu   +8 more
wiley   +1 more source

Are Business Cycles All Alike? A Bandpass Filter Analysis of Italian and US Cycles [PDF]

open access: yes
In this paper, we apply the bandpass filter to the main Italian and US macroeconomic variables, we estimate cross-correlations with respect to a benchmark indicator of the business cycle, and we compare results with previous empirical analyses.
Andrea Roventini   +2 more
core  

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