Results 71 to 80 of about 612 (188)

Two integrator loop quadrature oscillators: A review

open access: yesJournal of Advanced Research, 2013
A review of the two integrator loop oscillator circuits providing two quadrature sinusoidal output voltages is given. All the circuits considered employ the minimum number of capacitors namely two except one circuit which uses three capacitors.
Ahmed M. Soliman
doaj   +1 more source

Research on Track Irregularity Detection Algorithm Based on Data Fusion

open access: yes机车电传动, 2021
Aiming at the problem of track irregularity detection method and accuracy, a strap-down inertial navigation technology was proposed. A quaternion based "mathematical platform" was built.
Yi LI, Huan BAI, Yuanming LIU
doaj  

A Voltage Gain-Controlled Modified CFOA And Its Application in Electronically Tunable Four-Mode All-Pass Filter Design

open access: yesInternational Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, 2012
This paper presents a new active building block (ABB) called voltage gain-controlled modified current feedback amplifier (VGC-MCFOA) based on bipolar junction transistor technology.
Norbert Herencsar   +4 more
doaj   +1 more source

Novel RC oscillators using the current-feedback operationalamplifier [PDF]

open access: yes, 1996
Novel oscillator circuits using the current-feedback operational amplifier (CFOA) are presented. Each circuit uses one CFOA and five passive elements.
Farooqi, A.A.   +2 more
core  

Inverting CFOA Based Lossless and Lossy Grounded Inductor Simulators

open access: yes, 2015
In this paper, two lossy grounded inductor simulators (GISs) and one lossless GIS including an inverting type current feedback operational amplifier (CFOA-), two resistors and a capacitor are proposed.
Erkan Yuce   +3 more
core   +1 more source

Towards Sustainable Construction: Hybrid Prediction Modeling for Compressive Strength of Rice Husk Ash Concrete

open access: yesDesigns
Rice husk ash (RHA) offers an eco-friendly way to improve concrete. Owing to the complex mix design of RHA concrete, accurately predicting its strength remains a challenge. This study addresses this need by compiling a dataset of 291 compressive strength
Wanling Yang   +5 more
doaj   +1 more source

Combining the vegetation indices and bionic optimization random forest for predicting SPAD values in maize leaves

open access: yesChemical and Biological Technologies in Agriculture
Background Leaf Soil and Plant Analyzer Development (SPAD) is an important physiological index reflecting the healthy growth and development of maize. Accurate estimation of leaf SPAD by vegetation indices is of great significance for regulating maize ...
Fu Zhang   +6 more
doaj   +1 more source

An experimental study on chaotic dynamics of CFOA-based SC-CNN circuit

open access: yes, 2005
In this paper, an experimental implementation of State Controlled Cellular Neural Network (SC-CNN) circuit using Current Feedback Op Amp (CFOA) is presented and its chaotic dynamics including high frequency performance are investigated by laboratory ...
Yildirim, Fatma   +2 more
core   +1 more source

Research on Sleeper Detection Scheme Based on Image and Laser Multi-data Fusion

open access: yesKongzhi Yu Xinxi Jishu, 2021
Accurate detection of railway track sleepers is the premise to realize intelligent upgrade of tamping machine, and also one of the necessary conditions to realize the automatic tamping of large machines.
LIU Yuanming, ZHANG Lei
doaj  

Enhancing Predictions of Axial Load Capacity with Machine Learning and Optimization Techniques [PDF]

open access: yesJournal of Artificial Intelligence and System Modelling
Accurate axial load capacity forecasting is crucial in designing, analyzing, and optimizing structural components. The current research introduces a machine learning model that demonstrates improved accuracy and efficiency in prediction through the ...
Heng Zheng
doaj   +1 more source

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