Occurrence and Characteristic Frequencies of Nappe Oscillations at Free-Overfall Structures

2021 ◽  
Vol 147 (2) ◽  
pp. 06020017
Author(s):  
Vasileios Kitsikoudis ◽  
Maurine Lodomez ◽  
Benjamin Dewals ◽  
Pierre Archambeau ◽  
Michel Pirotton ◽  
...  
Keyword(s):  
Characteristic Frequencies ◽  
Free Overfall

scholarly journals Hydraulics of free overfall in smooth triangular channels

2021 ◽  
Author(s):  
Karzan Abdullah Muhsin ◽  
Bahzad Mohammad Ali Noori
Keyword(s):  
Free Overfall

Direct solution for discharge in circular free overfall

2012 ◽  
Vol 446-447 ◽  
pp. 116-120 ◽  
Author(s):  
Z. Ahmad ◽  
H.Md. Azamathulla
Keyword(s):  
Direct Solution ◽  
Free Overfall

scholarly journals Beyond the brain: towards a mathematical modeling of emotions

2021 ◽  
Vol 2090 (1) ◽  
pp. 012119
Author(s):  
Benjamin Ambrosio
Keyword(s):  
Mathematical Modeling ◽  
Dynamical System ◽  
Electromagnetic Waves ◽  
Real Life ◽  
Work Environments ◽  
Mathematical Approach ◽  
Characteristic Frequencies ◽  
Human Psyche ◽  
The Brain ◽  
Psychic State

Abstract This article focuses on a mathematical description of the emotional phenomenon. The key concept is to consider emotions as an energy, and to rely on the analogy with the electromagnetic waves. Our aim is to provide a mathematical approach to characterize the emergence of emotional fluxes in the human psyche. This goes beyond classical pscychological approaches. In this setting, specific emotions correspond to specific frequencies and our psychic state results from the summation of different characteristic frequencies. Our general model of psychic state is a dynamical system whose evolution results from interactions between external inputs and internal reactions. The model provides both qualitative (frequencies) and quantitative (intensity) components. It aims to be applied to real life situations (in particular in work environments) and we provide a typical example which naturally leads to a problem of control.

scholarly journals Viscosity Measurement of Olive Oil under Pressure

2021 ◽  
Vol 6 (5) ◽  
Author(s):  
Pawlicki LT
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Phase Transitions ◽  
Liquid Phase ◽  
Olive Oil ◽  
Measurement Method ◽  
Viscosity Measurement ◽  
Food Preservation ◽  
Characteristic Frequencies ◽  
Viscosity Changes

This article presents changes in the viscosity of olive oil during compression. The test was carried out indirectly by measuring the dependence of the resonance frequency of the piezoelectric immersed in olive oil on pressure. For this purpose, for successive pressures, the resonance curves were read and the values of the characteristic frequencies were determined. Viscosity changes were analysed and related to the compression and crystallization taking place in the tested substance. During this research, a phase transition from the liquid phase to the alpha crystalline phase was detected, during which the resonant frequency of the tested piezoelectric reached a minimum and the viscosity related to this frequency reached a maximum. The measurement method developed in this paper can be used to detect the phase transitions of oils subjected to pressure. This may find application in the oil production and high-pressure food preservation industries for which this knowledge is essential for the safe and trouble-free use of their machines.

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