Results 31 to 40 of about 5,380,639 (293)

Design with Constructal Theory [PDF]

open access: yes, 2008
Constructal theory is the view that the generation of “designedness” in nature is a universal (physics) phenomenon that can be based on principle (the constructal law): “For a finite-size flow system to persist in time (to live) its configuration must ...
A. Bejan   +3 more
core   +1 more source

Constructal Theory: A Tool for Ergonomics [PDF]

open access: yes, 2015
Constructal theory proposes to see living bodies as machines that are subjected to constraints, which are constructed with a goal, an objective, which is to obtain maximum efficiency.
Reis, A. Heitor
core   +1 more source

Constructions in Ramsey theory

open access: yesJournal of the London Mathematical Society, 2018
We provide several constructions for problems in Ramsey theory. First, we prove a superexponential lower bound for the classical 4-uniform Ramsey number $r_4(5,n)$, and the same for the iterated $(k-4)$-fold logarithm of the $k$-uniform version $r_k(k+1,n)$.
Dhruv Mubayi, Andrew Suk
openaire   +5 more sources

A Constructal-Theory-Based Methodology to Determine the Configuration of Empty Channels Used in the Resin Impregnation of a Square Porous Plate

open access: yesFluids, 2023
Liquid composite molding techniques are largely used to produce pieces such as truck cabins or wind turbine blades. The liquid resin infusion processes use a network of injection channels to improve the resin flow through a porous-reinforced medium.
Glauciléia Maria Cardoso Magalhães   +2 more
doaj   +1 more source

Constructive matrix theory [PDF]

open access: yesJournal of High Energy Physics, 2007
We extend the technique of constructive expansions to compute the connected functions of matrix models in a uniform way as the size of the matrix increases. This provides the main missing ingredient for a non-perturbative construction of the $ϕ^{\star 4}_4$ field theory on the Moyal four dimensional space.
openaire   +4 more sources

Tree-Shaped Flow Structures Viewed from the Constructal Theory Perspective

open access: yes, 2012
Constructal theory, conceived by Adrian Bejan, is the view that the generation of configuration in nature is a universal phenomenon, which is covered by a law of physics-the constructal law.
Miguel, A. F.
core   +1 more source

Theory Construction [PDF]

open access: yes, 2012
Theory construction is a process, i.e., a set of state changes by an autonomous agent, or by an organism composed of several autonomous agents. In the first case, we may recall the approach of Pierce (1931) that considers three logical operations (inference rules) on a knowledge base, i.e., a set of propositions asserted to be valid: abduction ...
Sallantin, Jean, Cerri, Stefano A.
openaire   +2 more sources

Currentology for the Constructal Theory [PDF]

open access: yes, 2008
Presented an attempt to describe flows of mass, impulse, electrical charge,energy , entropy, exergy and information in the standard divergence form of differential equations for the vectors of their currents, entitled as Currentology.
Yantovski, Evgeny
core   +1 more source

First and second law analysis applied to building envelope: A theoretical approach on the potentiality of Bejan’s theory

open access: yesEnergy Reports, 2015
Especially in the last decade, efforts have been made in developing the sustainable building assessment tools, which are usually performed based on fundamentals of the First Law of Thermodynamics.
Cesare Biserni, Massimo Garai
doaj   +1 more source

Geometric optimization of bodies submitted to an intense heat flux using bifurcated channel nets

open access: yesVetor, 2010
The present work studies the geometric optimization of a body submitted to intense heat flux. The body to be optimized is refrigerated by a ducts system whose circulating fluid will remove the heat.
Claus de Rosso Bolzan   +3 more
doaj   +4 more sources

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