Results 61 to 70 of about 2,085 (212)
Current Protocols, Volume 6, Issue 5, May 2026.Abstract Alveolar epithelial cell type 1 (AT1) and type 2 (AT2) cells make up the saccular gas exchange units of the lung, called alveoli. Formation of alveoli during lung development accounts for the expansive surface area of the lung, allowing for proper respiration and delivery of oxygen to the body.
Evelyn Tran +11 more
wiley +1 more source
The Role of Price‐Volatility Cojumps in Volatility Forecasting
Journal of Futures Markets, Volume 46, Issue 5, Page 931-951, May 2026.ABSTRACT This paper investigates whether simultaneous jumps in prices and volatility improve volatility forecasting. Using up‐to‐date high‐frequency S&P 500 and VIX data, we identify price‐volatility cojumps at the intraday granularity and construct upside, downside, and asymmetric measures.
Kefu Liao
wiley +1 more source
VOLTAGE MODE UNIVERSAL BIQUADRATIC FILTER USING FTFN AND OTA
Electrica, 2009 A single input and five outputs voltage mode universal biquadratic filter using two four terminal floatingnullor (FTFNs), two operational transconductance amplifiers (OTAs), four resistors and two groundedcapacitors is presented.
K KUMAR, K PAL
doaj +2 more sources
A Current-mode Electronically Controllable Multifunction Biquadratic Filter Using CCCIIs
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, 2013 This article presents a current-mode multifunction biquadratic filter performing completely standard functions low-pass, high-pass, band-pass, band-reject and all-pass functions.
MONTREE SIRIPRUCHYANUN +2 more
doaj +1 more source
Implementation of a Two-Channel Maximally Decimated Filter Bank using Switched Capacitor Circuits [PDF]
, 2013 The aim of this paper is to describe the implementation of a two-channel filter bank (FB) using the switched capacitor (SC) technique considering real properties of operational amplifiers (OpAmps).
Hospodka, J. +3 more
core +1 more source
Advanced Intelligent Systems, Volume 8, Issue 4, April 2026.Feature from recent image foundation models (DINOv2) are useful for vision tasks (segmentation, object localization) with little or no human input. Once upsampled, they can be used for weakly supervised micrograph segmentation, achieving strong results when compared to classical features (blurs, edge detection) across a range of material systems.
Ronan Docherty +2 more
wiley +1 more source
CDBA-Based Universal Biquad Filter and Quadrature Oscillator
Active and Passive Electronic Components, 2008 The voltage-mode universal biquadratic filter and sinusoidal quadrature oscillator based on the use of current differencing buffered amplifiers (CDBAs) as active components have been proposed in this paper.
Worapong Tangsrirat +2 more
doaj +1 more source
Long-range antiferromagnetic order in the S=1 chain compound LiVGe2O6
, 2000 The phase transition in the compound LiVGe2O6 has been proposed as a unique example of a spin-Peierls transition in an S=1 antiferromagnetic chain. We report neutron and x-ray diffraction measurements of LiVGe2O6 above and below the phase transition at T=
A. Koga +24 more
core +1 more source
Reduction of operational amplifiers finite gain effects in switched-capacitor biquads [PDF]
, 2005 A combined approach for reducing the errors in the pole frequency f p, the pole Q - factor Qp and the magnitude at the pole frequency Hp, of switched capacitor biquads is presented.
Ivanov Kantcho, Radev Nikolay
core +1 more source
Active-phase-compensated biquadratic highpass filter
Electronics Letters, 1982 A new three-amplifier active-phase-compensated biquadratic highpass filter is presented. It is shown that for the matched amplifiers the circuit exhibits a stable Q-factor and, unlike the Akerberg and Mossberg highpass circuit, feedforward paths are not required.
openaire +1 more source