منابع مشابه
The Principle of Least Action
In their never-ending search for general principles, from which various laws of Physics could be derived, physicists, and most notably theoretical physicists, have often made use of variational techniques. These usually involved the minimisation of certain quantities. A typical example is Fermat’s principle of least time where light, propagating between two distant points in space, is postulate...
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If the question were who among the philosophers was the first to realize that nature in all its operations follows the easiest path, or what amounts to the same thing, expends the least amount of effort, it would surely be ridiculous to suppose that any one modern philosopher could lay claim to this glorious discovery. The earliest philosophers had already recognized that nature does nothing in...
متن کاملOn the least action principle in cosmology
Given the present distribution of mass tracing objects in an expanding universe, we develop and test a fast method for recovering their past orbits using the least action principle. In this method, termed FAM for Fast Action Minimization, the orbits are expanded in a set of orthogonal time-base functions satisfying the appropriate boundary conditions at the initial and final times. The conjugat...
متن کاملInterpolative Fuzzy Inferences Using Least Square Principle
Many researchers have been interested in approximation properties of fuzzy logic systems (FLS), which like neural networks can be seen as approximation schemes. Almost all of them tackled Mamdani fuzzy model, which was shown to have many interesting features. This paper aims to present alternatives for traditional inference mechanisms and CRI method. The most attractive advantage of these new m...
متن کاملThe least-disturbance principle and weak constraints
Certain problems, notably in computer vision, involve adjusting a set of real-valued labels to satisfy certain constraints. They can be formulated as optimisation problems, using the 'least-disturbance' principle: the minimal alteration is made to the labels that will achieve a consistent labelling. Under certain linear constraints, the solution can be achieved iteratively and in parallel, by h...
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ژورنال
عنوان ژورنال: Nature
سال: 1995
ISSN: 0028-0836,1476-4687
DOI: 10.1038/374674a0