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1. |
Record Nr. |
UNINA9910784114003321 |
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Autore |
Cook Sam |
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Titolo |
Up North [[electronic resource] /] / Sam Cook ; illustrations by Bob Cary |
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Pubbl/distr/stampa |
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Minneapolis, : University of Minnesota Press, 2003 |
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ISBN |
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Edizione |
[1st University of Minnesota Press ed.] |
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Descrizione fisica |
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1 online resource (192 p.) |
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Collana |
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Outdoor Essays & Reflections |
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Disciplina |
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Soggetti |
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Outdoor life - Minnesota - Duluth Region |
Duluth Region (Minn.) Description and travel |
Duluth Region (Minn.) Social life and customs |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Originally published: Duluth, MN : Pfeifer-Hamilton, c1986. |
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Nota di contenuto |
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Contents; Up North; Spring; Summer; Fall; Winter; Spring; Summer; Fall; Winter |
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Sommario/riassunto |
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In this unforgettable collection of essays, Sam Cook portrays the enchanting North Country as a state of mind as much as a geographical area. Up North captures the mystic moods, seasonal subtleties, and colorful characters that fill the region from the Minnesota canoe country to the vast expanse of the Northwest Territories. |
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2. |
Record Nr. |
UNINA9910346839603321 |
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Autore |
Munoz-Pacheco Jesus M |
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Titolo |
Nonlinear Dynamics and Entropy of Complex Systems with Hidden and Self-excited Attractors / Jesus M. Munoz-Pacheco, Jacques Kengne, Sajad Jafari, Christos Volos |
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Pubbl/distr/stampa |
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MDPI - Multidisciplinary Digital Publishing Institute, 2019 |
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Basel, Switzerland : , : MDPI, , 2019 |
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ISBN |
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Descrizione fisica |
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1 electronic resource (290 p.) |
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Soggetti |
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History of engineering and technology |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Sommario/riassunto |
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In recent years, entropy has been used as a measure of the degree of chaos in dynamical systems. Thus, it is important to study entropy in nonlinear systems. Moreover, there has been increasing interest in the last few years regarding the novel classification of nonlinear dynamical systems including two kinds of attractors: self-excited attractors and hidden attractors. The localization of self-excited attractors by applying a standard computational procedure is straightforward. In systems with hidden attractors, however, a specific computational procedure must be developed, since equilibrium points do not help in the localization of hidden attractors. Some examples of this kind of system are chaotic dynamical systems with no equilibrium points; with only stable equilibria, curves of equilibria, and surfaces of equilibria; and with non-hyperbolic equilibria. There is evidence that hidden attractors play a vital role in various fields ranging from phase-locked loops, oscillators, describing convective fluid motion, drilling systems, information theory, cryptography, and multilevel DC/DC converters. This Special Issue is a collection of the latest scientific trends on the advanced topics of dynamics, entropy, fractional order calculus, and applications in complex systems with self-excited attractors and |
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