نتایج جستجو برای: tower length

تعداد نتایج: 317246  

2011
MICHAEL A. HILL

We present an introduction to the equivariant slice filtration. After reviewing the definitions and basic properties, we determine the sliceconnectivity of various families of naturally arising spectra. This leads to an analysis of pullbacks of slices defined on quotient groups, producing new collections of slices. Building on this, we determine the slice tower for the Eilenberg-Mac Lane spectr...

2009
Henry Towsner

The Furstenberg-Zimmer structure theorem for Z actions says that every measurepreserving system can be decomposed into a tower of primitive extensions. Furstenberg and Katznelson used this analysis to prove the multidimensional Szemerédi’s theorem, and Bergelson and Liebman further generalized to a polynomial Szemerédi’s theorem. Beleznay and Foreman showed that, in general, this tower can have...

2015
J. Joiner A. P. Vasilkov K. Schaefer M. Jung Belelli Marchesini L. Guanter S. Garrity K. F. Huemmrich L. Belelli Marchesini

The seasonal cycle of satellite chlorophyll fluorescence observations and its relationship to vegetation phenology and ecosystem atmosphere carbon exchange" (2014). NASA Publications. Paper 158. The seasonal cycle of satellite chlorophyll fluorescence observations and its relationship to vegetation phenology and ecosystem atmosphere carbon exchange a b s t r a c t a r t i c l e i n f o Keywords...

1999
SAHARON SHELAH SIMON THOMAS

It is well-known that the automorphism towers of infinite centre-less groups of cardinality κ terminate in less than (2 κ) + steps. But an easy counting argument shows that (2 κ) + is not the best possible bound. However, in this paper, we will show that it is impossible to find an explicit better bound using ZF C.

2007
Vladimir Y. Chernyak Michael Chertkov

Loop Calculus introduced in [1], [2] constitutes a new theoretical tool that explicitly expresses the symbol Maximum-A-Posteriori (MAP) solution of a general statistical inference problem via a solution of the Belief Propagation (BP) equations. This finding brought a new significance to the BP concept, which in the past was thought of as just a loop-free approximation. In this paper we continue...

2012
Vincent St-Amour Sam Tobin-Hochstadt Matthew Flatt Matthias Felleisen

In the past, the creators of numerical programs had to choose between simple expression of mathematical formulas and static type checking. While the Lisp family and its dynamically typed relatives support the straightforward expression via a rich numeric tower, existing statically typed languages force programmers to pollute textbook formulas with explicit coercions or unwieldy notation. In thi...

2007
A. C. De Vries W. P. Kustas

Aerodynamic roughness length 0 ) and displacement height 0 ) are important surface parameters for estimating surface fluxes in numerical models. These parameters are generally determined from wind flow characteristics using logarithmic wind profiles measured at a meteorological tower or by balloon release. It would be an advantage to use measurements of land surface characteristics instead of w...

A. Nouri,

In this paper the changes in the heat capacity of cooling towers has been investigated as a result of injecting combustion products of boilers. In the tower, the air is re-heated through mixing with hot flue gas after passing through the heat exchangers. As a result of this process, the draft of the cooling tower is increased. The additional produced draft depends on the ambient temperature and...

A. Nouri,

In this paper the changes in the heat capacity of cooling towers has been investigated as a result of injecting combustion products of boilers. In the tower, the air is re-heated through mixing with hot flue gas after passing through the heat exchangers. As a result of this process, the draft of the cooling tower is increased. The additional produced draft depends on the ambient temperature and...

Journal: :Journal of Renewable and Sustainable Energy 2023

The offshore wind turbine (OWT) is a high-rise structure that extremely sensitive to dynamic loads such as wind, waves, and earthquakes. Therefore, in order avoid resonance, it important accurately calculate the natural frequencies of OWT at design stage. integrated finite element model DTU (Technical University Denmark) 10 MW established based on OpenSees software. correctness superstructure s...

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