Results 1 to 10 of about 26,612,990 (138)

Entropy-Based Portfolio Optimization in Cryptocurrency Markets: A Unified Maximum Entropy Framework [PDF]

open access: yesEntropy
Traditional mean–variance portfolio optimization proves inadequate for cryptocurrency markets, where extreme volatility, fat-tailed return distributions, and unstable correlation structures undermine the validity of variance as a comprehensive risk ...
Silvia Dedu, Florentin Șerban
doaj   +2 more sources

MUCCnet: Munich Urban Carbon Column network [PDF]

open access: yesAtmospheric Measurement Techniques, 2021
In order to mitigate climate change, it is crucial to understand urban greenhouse gas (GHG) emissions precisely, as more than two-thirds of the anthropogenic GHG emissions worldwide originate from cities.
F. Dietrich   +5 more
doaj   +1 more source

On the class of uncertainty inequalities for the coupled fractional Fourier transform

open access: yesJournal of Inequalities and Applications, 2022
The coupled fractional Fourier transform F α , β $\mathcal {F}_{\alpha ,\beta}$ is a two-dimensional fractional Fourier transform depending on two angles α and β, which are coupled in such a way that the transform parameters are γ = ( α + β ) / 2 $\gamma
Firdous A. Shah   +3 more
doaj   +1 more source

SYNTHESIS OF A MULTI-MODE INTELLECTUAL SYSTEM OF MANAGEMENT OF A WEAKLY FORMED PROCESS

open access: yesСовременная наука и инновации, 2022
The characteristic features of many industrial processes of biotechnological, biotechnological, food and other industries are noted. The main ones are the difficulty of obtaining a mathematical model due to the incompleteness of knowledge of kinetic laws,
G. V. Masyutina   +3 more
doaj   +1 more source

On Graph Uncertainty Principle and Eigenvector Delocalization [PDF]

open access: yes, 2023
Uncertainty principles present an important theoretical tool in signal processing, as they provide limits on the time-frequency concentration of a signal. In many real-world applications the signal domain has a complicated irregular structure that can be
Salanevich, Palina   +3 more
core   +3 more sources

In Situ Calibration of Wetlabs Chlorophyll Sensors: A Methodology Adapted to Profile Measurements

open access: yesSensors, 2023
Measurement of chlorophyll a content in the ocean is essential for biomass assessment, finding the optical properties of seawater, and calibration of satellite remote sensing. The instruments used for this purpose are mostly fluorescence sensors.
Joëlle Salaün, Marc Le Menn
doaj   +1 more source

Measurement technology and model test of sediment concentration

open access: yesShuili Shuiyun Gongcheng Xuebao, 2018
Sediment concentration is one of the main targets of the river and harbor physical model experiments. With narrow measuring range, large measurement error and low repeatability of faults, the existing sediment concentration technology restricts the test ...
XIA Yunfeng   +4 more
doaj   +1 more source

UNCERTAINTY OF THE RESULTS OF THE RADON CONTROL IN HOUSINGS. PART 1. THE PROBLEM OF ASSESSMENT OF THE RADON CONCENTRATION AND MODERN CONTROL PRINCIPLES

open access: yesРадиационная гигиена, 2018
Radon control in buildings is being performed for decades in different countries of the world, including Russia. However, there is a lack of unified standard for the assessment of the uncertainty of the results of the control, considering the protocol ...
A. A. Tsapalov   +4 more
doaj   +1 more source

COMBSecretomics: A pragmatic methodological framework for higher-order drug combination analysis using secretomics.

open access: yesPLoS ONE, 2020
Multi drug treatments are increasingly used in the clinic to combat complex and co-occurring diseases. However, most drug combination discovery efforts today are mainly focused on anticancer therapy and rarely examine the potential of using more than two
Efthymia Chantzi   +4 more
doaj   +1 more source

Reliable and representative in silico predictions of freshwater ecotoxicological hazardous concentrations

open access: yesEnvironment International, 2020
A reliable quantification of the potential effects of chemicals on freshwater ecosystems requires ecotoxicological response data for a large set of species which is typically not available in practice.
Mélanie Douziech   +7 more
doaj   +1 more source

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