Results 11 to 20 of about 1,569 (175)

The thermodynamics of cognition: A mathematical treatment

open access: yesComputational and Structural Biotechnology Journal, 2021
There is a general expectation that the laws of classical physics must apply to biology, particularly the neural system. The evoked cycle represents the brain's energy/information exchange with the physical environment through stimulus.
Eva Deli   +2 more
doaj   +1 more source

Performance Analysis and Optimization for Irreversible Combined Carnot Heat Engine Working with Ideal Quantum Gases

open access: yesEntropy, 2021
An irreversible combined Carnot cycle model using ideal quantum gases as a working medium was studied by using finite-time thermodynamics. The combined cycle consisted of two Carnot sub-cycles in a cascade mode.
Lingen Chen   +3 more
doaj   +1 more source

How the Brain Becomes the Mind: Can Thermodynamics Explain the Emergence and Nature of Emotions?

open access: yesEntropy, 2022
The neural systems’ electric activities are fundamental for the phenomenology of consciousness. Sensory perception triggers an information/energy exchange with the environment, but the brain’s recurrent activations maintain a resting state with constant ...
Éva Déli   +2 more
doaj   +1 more source

What Is Psychological Spin? A Thermodynamic Framework for Emotions and Social Behavior

open access: yesPsych, 2023
One of the most puzzling questions in neuroscience is the nature of emotions and their role in consciousness. The brain’s significant energy investment in maintaining the resting state indicates its essential role as the ground state of consciousness ...
Eva K. Deli
doaj   +1 more source

Limiting Performance of the Ejector Refrigeration Cycle with Pure Working Fluids

open access: yesEntropy, 2023
An ejector refrigeration system is a promising heat-driven refrigeration technology for energy consumption. The ideal cycle of an ejector refrigeration cycle (ERC) is a compound cycle with an inverse Carnot cycle driven by a Carnot cycle. The coefficient
Jiawei Fu   +4 more
doaj   +1 more source

The Principle of Least Action for Reversible Thermodynamic Processes and Cycles

open access: yesEntropy, 2018
The principle of least action, which is usually applied to natural phenomena, can also be used in optimization problems with manual intervention. Following a brief introduction to the brachistochrone problem in classical mechanics, the principle of least
Tian Zhao, Yu-Chao Hua, Zeng-Yuan Guo
doaj   +1 more source

Thermodynamic analysis of general heat engine cycle with finite heat capacity rates for power maximization

open access: yesCase Studies in Thermal Engineering, 2022
In this study, the ideal cycles with finite heat capacity rates is investigated theoretically to maximize power generation using a sequential Carnot cycle model.
Soyeon Kim, Young-Jin Baik, Minsung Kim
doaj   +1 more source

Chemical and Mechanical Aspect of Entropy-Exergy Relationship

open access: yesEntropy, 2021
The present research focuses the chemical aspect of entropy and exergy properties. This research represents the complement of a previous treatise already published and constitutes a set of concepts and definitions relating to the entropy–exergy ...
Pierfrancesco Palazzo
doaj   +1 more source

Optimization Modeling of Irreversible Carnot Engine from the Perspective of Combining Finite Speed and Finite Time Analysis

open access: yesEntropy, 2021
An irreversible Carnot cycle engine operating as a closed system is modeled using the Direct Method and the First Law of Thermodynamics for processes with Finite Speed.
Monica Costea   +4 more
doaj   +1 more source

Carnot cycle for an oscillator [PDF]

open access: yesEuropean Journal of Physics, 2002
Carnot established in 1824 that the efficiency of cyclic engines operating between a hot bath at absolute temperature $T_{hot}$ and a bath at a lower temperature $T_{cold}$ cannot exceed $1-T_{cold}/T_{hot}$. We show that linear oscillators alternately in contact with hot and cold baths obey this principle in the quantum as well as in the classical ...
Arnaud, Jacques   +2 more
openaire   +4 more sources

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