Results 71 to 80 of about 829,338 (182)

Instantaneous Frequency Estimation of FM Signals under Gaussian and Symmetric α-Stable Noise: Deep Learning versus Time–Frequency Analysis

Information, 2022
Deep learning (DL) and machine learning (ML) are widely used in many fields but rarely used in the frequency estimation (FE) and slope estimation (SE) of signals.
Huda Saleem Razzaq, Zahir M. Hussain
doaj   +1 more source

Spatial modeling of extreme snow depth

, 2011
The spatial modeling of extreme snow is important for adequate risk management in Alpine and high altitude countries. A natural approach to such modeling is through the theory of max-stable processes, an infinite-dimensional extension of multivariate ...
Blanchet, Juliette, Davison, Anthony C.
core   +1 more source

Method of constructing logical-event computational models of transforming social information processes

Вестник Самарского университета: Естественнонаучная серия
The article develops a method for organizing a logical-event hybrid model for analyzing socioinformational processes in their stages, event transformations and rapid disturbances.
A. Yu. Perevaryukha
doaj   +1 more source

Spectral tail processes and max-stable approximations of multivariate regularly varying time series

, 2018
A regularly varying time series as introduced in Basrak and Segers (2009) is a (multivariate) time series such that all finite dimensional distributions are multivariate regularly varying.
Janßen, Anja
core   +1 more source

Semiparametric estimation for isotropic max-stable space-time processes [PDF]

Bernoulli, 2019
43 pages, 14 ...
Buhl, Sven, Davis, Richard A., Klüppelberg, Claudia, Steinkohl, Christina   +3 more
openaire   +4 more sources

Water restriction and physiological traits in soybean genotypes contrasting for nitrogen fixation drought tolerance

Scientia Agricola
Biological nitrogen fixation (BNF) is essential to the economic viability of the soybean [Glycine max (L.) Merrill] crop in Brazil, but drought may impair the BNF processes.
Paula Cerezini, Dáfila dos Santos Lima Fagotti, Antonio Eduardo Pípolo, Mariangela Hungria, Marco Antonio Nogueira   +4 more
doaj   +1 more source

Do Soil pH Levels Drive the Responses of Catalase Activity and Bacterial Communities to Microplastics? A Case Study in Mollisols

Toxics
Prolonged application and low recycling rates of agricultural plastic films have resulted in significant accumulation of microplastics (MPs) in soils, posing a threat to soil health.
Yuan Yin, Xiangyu Wu, Qina Ren, Yuxin Guo, Zhonghui Yue, Xin Bai, Jia Xu, Pengwei Wang   +7 more
doaj   +1 more source

Cloning, purification, and characterization of an organic solvent-tolerant chitinase, MtCh509, from Microbulbifer thermotolerans DAU221

Biotechnology for Biofuels, 2018
Background The ability to use organic solvents in enzyme reactions offers a number of industrially useful advantages. However, most enzymes are almost completely inactive in the presence of organic solvents.
Hyo-Jung Lee, Yong-Suk Lee, Yong-Lark Choi   +2 more
doaj   +1 more source

Models for extremal dependence derived from skew-symmetric families

, 2016
Skew-symmetric families of distributions such as the skew-normal and skew-$t$ represent supersets of the normal and $t$ distributions, and they exhibit richer classes of extremal behaviour.
Beranger, Boris, Padoan, Simone A., Sisson, Scott A.   +2 more
core   +1 more source

The Relationship between Dry Matter Increase of Seed and Shoot during the Seed-Filling Period in Three Kinds of Soybeans with Different Growth Habits Subjected to Shading and Thinning

Plant Production Science, 2006
The ratio of dry-matter increase in seed (S) to that in shoot (W), referred to as Rs/W, during the seed-filling period may reflect the balance between the assimilate supply and the sink capacity of harvest organs.
Jin Kakiuchi, Tohru Kobata
doaj   +1 more source