13,815 research outputs found
Natural process – Natural selection
Life is supported by a myriad of chemical reactions. To describe the overall process we have formulated entropy for an open system undergoing chemical reactions. The entropy formula allows us to recognize various ways for the system to move towards more probable states. These correspond to the basic processes of life i.e. proliferation, differentiation, expansion, energy intake, adaptation and maturation. We propose that the rate of entropy production by various mechanisms is the fitness criterion of natural selection. The quest for more probable states results in organization of matter in functional hierarchies
Solar Rights and Restrictive Covenants: A Microeconomic Analysis
This comment addresses the enforceability of restrictive covenants in relation to solar energy rights. Articulating the framework for development of solar energy, this comment works through an economic model formulated by Professors Ellickson, Coase, Calabresi, and Malemed. Looking for an efficient allocation of resources, this comment proposes a modernization of common law property principles to ensure the proper growth of solar energy
Indoor air pollution and health risks in Finnish ice arenas (Suomalaisten jäähallien sisäilman epäpuhtaudet ja terveysriskit)
Natural games
Behavior in the context of game theory is described as a natural process that
follows the 2nd law of thermodynamics. The rate of entropy increase as the
payoff function is derived from statistical physics of open systems. The
thermodynamic formalism relates everything in terms of energy and describes
various ways to consume free energy. This allows us to associate game
theoretical models of behavior to physical reality. Ultimately behavior is
viewed as a physical process where flows of energy naturally select ways to
consume free energy as soon as possible. This natural process is, according to
the profound thermodynamic principle, equivalent to entropy increase in the
least time. However, the physical portrayal of behavior does not imply
determinism. On the contrary, evolutionary equation for open systems reveals
that when there are three or more degrees of freedom for behavior, the course
of a game is inherently unpredictable in detail because each move affects
motives of moves in the future. Eventually, when no moves are found to consume
more free energy, the extensive-form game has arrived at a solution concept
that satisfies the minimax theorem. The equilibrium is Lyapunov-stable against
variation in behavior within strategies but will be perturbed by a new strategy
that will draw even more surrounding resources to the game. Entropy as the
payoff function also clarifies motives of collaboration and subjective nature
of decision making.Comment: 14 pages, 1 figur
Space, time and machines
The 2nd law of thermodynamics is used to shed light on present-day puzzles in
cosmology. The universal law, given as an equation of motion, describes diverse
systems when consuming free energy via various mechanisms to attain stationary
states in their respective surroundings. Expansion of the Universe, galactic
rotation and lensing as well as clustering of red-shifted spectral lines are
found as natural consequences of the maximal energy dispersal that satisfies
the conservation of energy, in the forms of kinetic, potential and dissipation.
The Universe in its entirety is pictured as a giant Riemann resonator in
evolution via step-by-step spontaneous breaking of one stationary-state
symmetry to another to diminish energy density differences relative to its
zero-density "surroundings". The continuum equation of evolution is proven
equivalent to the Navier-Stokes equation. The ubiquitous flow equation has no
solution because the forces and flows are inseparable when the dissipative
process has three or more degrees of freedom. Since an evolving system is
without a norm, there is no unitary transformation to solve the characteristic
equation, but detailed trajectories remain inherently intractable. Conversely,
stationary-state trajectories can be solved.Comment: 19 pages, 8 figure
Cause of Chirality Consensus
Biological macromolecules, proteins and nucleic acids are composed
exclusively of chirally pure monomers. The chirality consensus appears vital
for life and it has even been considered as a prerequisite of life. However the
primary cause for the ubiquitous handedness has remained obscure. We propose
that the chirality consensus is a kinetic consequence that follows from the
principle of increasing entropy, i.e. the 2nd law of thermodynamics. Entropy
increases when an open system evolves by decreasing gradients in free energy
with more and more efficient mechanisms of energy transduction. The rate of
entropy increase is the universal fitness criterion of natural selection that
favors diverse functional molecules and drives the system to the chirality
consensus to attain and maintain high-entropy non-equilibrium states.Comment: 8 pages, 2 figure
Physical portrayal of computational complexity
Computational complexity is examined using the principle of increasing
entropy. To consider computation as a physical process from an initial instance
to the final acceptance is motivated because many natural processes have been
recognized to complete in non-polynomial time (NP). The irreversible process
with three or more degrees of freedom is found intractable because, in terms of
physics, flows of energy are inseparable from their driving forces. In
computational terms, when solving problems in the class NP, decisions will
affect subsequently available sets of decisions. The state space of a
non-deterministic finite automaton is evolving due to the computation itself
hence it cannot be efficiently contracted using a deterministic finite
automaton that will arrive at a solution in super-polynomial time. The solution
of the NP problem itself is verifiable in polynomial time (P) because the
corresponding state is stationary. Likewise the class P set of states does not
depend on computational history hence it can be efficiently contracted to the
accepting state by a deterministic sequence of dissipative transformations.
Thus it is concluded that the class P set of states is inherently smaller than
the set of class NP. Since the computational time to contract a given set is
proportional to dissipation, the computational complexity class P is a subset
of NP.Comment: 16, pages, 7 figure
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