Results 31 to 40 of about 1,413,737 (264)

Stochastic Forecasting of Regional Age-Specific Fertility Rates: An Outlook for German NUTS-3 Regions

open access: yesMathematics, 2023
Regional fertility forecasts are important for long-term planning in a variety of fields that include future birth numbers in their forecast, such as school or kindergarten planning.
Patrizio Vanella, Max J. Hassenstein
doaj   +1 more source

A Novel Baseline-Free Method for Damage Localization Using Guided Waves Based on Hyperbola Imaging Algorithm

open access: yesSensors, 2023
Most imaging methods based on ultrasonic Lamb waves in structural health monitoring requires reference signals, recorded in the intact state. This paper focuses on a novel baseline-free method for damage localization using Lamb waves based on a ...
Jichao Xu   +3 more
doaj   +1 more source

Cross-correlations of American baby names [PDF]

open access: yesProceedings of the National Academy of Sciences, 2015
Significance Societal and cultural transformations are very general and debated topics, both by scientists (e.g., sociologists) and by public opinion (e.g., artists, music producers, brand manufacturers, and advertising agencies). Although almost everyone would be able to express a position on such arguments, it is much more difficult to ...
Barucca, Paolo   +4 more
openaire   +5 more sources

Passive Detection of Low-Altitude Signal Sources Using an Improved Cross-Correlation Algorithm

open access: yesApplied Sciences, 2018
The passive detection of low-altitude signal sources is studied using an improved cross-correlation method in the time⁻frequency domain. A matching template is designed for signal cross-correlation, and a cross-correlation threshold is used to ...
Conghui Cao   +4 more
doaj   +1 more source

Efficient Cross-Correlation Filtering of One- and Two-Color Single Molecule Localization Microscopy Data

open access: yesFrontiers in Bioinformatics, 2021
Single molecule localization microscopy has become a prominent technique to quantitatively study biological processes below the optical diffraction limit.
Angel Mancebo   +5 more
doaj   +1 more source

Cross-Correlation Properties of Cyclotomic Sequences [PDF]

open access: yesIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2007
Sequences with good correlation properties are widely used in engineering applications, especially in the area of communications. Among the known sequences, cyclotomic families have the optimal autocorrelation property. In this paper, we decide the cross-correlation function of the known cyclotomic sequences completely.
Kai Cai 0001   +2 more
openaire   +2 more sources

Design and implementation of fiber-optic vibration positioning system based on FPGA

open access: yesDianzi Jishu Yingyong, 2018
Aiming at the problem that the perimeter of defense zone can’t be located in real time when it is invaded, this paper designed and realized a real-time distributed optical fiber vibration positioning system.
Luo Yijun, Fang Li
doaj   +1 more source

SEVEN-DAY CYCLE IN THE PARAMETERS OF ATMOSPHERIC AEROSOLS ACCORDING TO THE UKRAINIAN AERONET STATIONS DATA

open access: yesRadio Physics and Radio Astronomy, 2019
Purpose: The work is aimed at searching, analyzing and comparison of weekly cycles in the behavior of optical characteristics of atmospheric aerosols, namely, the aerosol optical thickness in the regions of Ukraine with different degrees of anthropogenic
A. V. Soina
doaj   +1 more source

Advanced machine learning-based kharif maize evapotranspiration estimation in semi-arid climate

open access: yesWater Science and Technology, 2023
Accurate Crop Evapotranspiration (ETc) estimation is crucial for understanding hydrological and agrometeorological processes, yet it's challenged by multiple parameters, data variations, and lack of continuity.
Malkhan Singh Jatav   +4 more
doaj   +1 more source

The venetian-blind effect: A preference for zero disparity or zero slant?

open access: yesFrontiers in Psychology, 2013
When periodic stimuli, such as vertical sinewave gratings, are presented to the two eyes, the initial stage of disparity estimation yields multiple solutions stacked in at multiple depths.
Björn N.S. Vlaskamp   +4 more
doaj   +1 more source

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