Results 11 to 20 of about 4,251,800 (292)

Species- and Trait-Based Reconstructions of the Hydrological Regime in a Tropical Peatland (Central Sumatra, Indonesia) during the Holocene Using Testate Amoebae

open access: yesDiversity, 2022
Paleoecological reconstructions of hydrological regimes in tropical peatlands during the Holocene are important for the estimation of their responses to changing environments. However, the application of some widely used proxies, such as testate amoebae,
Andrey N. Tsyganov   +7 more
doaj   +1 more source

Application of a Diatom Transfer Function to Quantitative Paleoclimatic Reconstruction — A Case Study of Yunlong Lake, Southwest China

open access: yesFrontiers in Earth Science, 2021
Although diatom records from lake sediments have been used for quantitative paleoclimatic reconstruction, their validity and sensitivity have rarely been tested rigorously.
Yafei Zou   +8 more
doaj   +1 more source

Mathematical and simulation modeling of dual active bridge [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2022
The paper is a structured, in-depth analysis of dual active bridge modeling. In the research new, profound dual active bridge converter (DAB) circuit model is presented.
Roman Barlik   +2 more
doaj   +1 more source

The transfer functions of rocket nozzles [PDF]

open access: yes, 1952
The transfer function is defined as the fractional oscillating mass flow rate divided by the fractional sinusoidal pressure oscillation in the rocket combustion chamber. This is calculated as a function of the frequency of oscillation.
Tsien, H. S.
core   +1 more source

Transfer Function Synthesis without Quantifier Elimination [PDF]

open access: yes, 2011
Traditionally, transfer functions have been designed manually for each operation in a program, instruction by instruction. In such a setting, a transfer function describes the semantics of a single instruction, detailing how a given abstract input state ...
Brauer, Jörg, King, Andy
core   +5 more sources

A general model for the frequency response of multiphase charge transfer delay lines [PDF]

open access: yes, 1979
A general model for the transfer function of a multiphase CTD delay line is presented in the z-domain. It covers the widely used single-phase transfer function. The new model has been applied for CTDs with asymmetrical potential wells.
Wallinga, Hans
core   +4 more sources

Speech Spectral Transfer Function

open access: yesITM Web of Conferences, 2017
The article discusses the problem of estimating the psychophysiological state of aircraft pilots by their speech. For this purpose, a new concept of an individual speaker’s transfer function is proposed.
Korsun Oleg N.   +2 more
doaj   +1 more source

Identification of UAV model parameters from flight and computer experiment data

open access: yesАвіаційно-космічна техніка та технологія, 2021
The object of research in the article is various well-known approaches and methods of structural and parametric identification of dynamic controlled objects - unmanned aerial vehicles (UAVs).
Serhii Kochuk   +3 more
doaj   +1 more source

Frequency-Domain Analysis of Linear Time-Periodic Systems [PDF]

open access: yes, 2004
In this paper, we study convergence of truncated representations of the frequency-response operator of a linear time-periodic system. The frequency-response operator is frequently called the harmonic transfer function. We introduce the concepts of input,
Bernhardsson, Bo   +2 more
core   +1 more source

Direct Calculation of Band-Pass Filters

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2022
Introduction. When calculating band-pass filters (BPF), the circuit elements can be determined by converting the parameters of prototype low-pass filters (LPF).
E. N. Chervinskiy
doaj   +1 more source

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