Results 41 to 50 of about 20,244,257 (338)

Distribution of Semi-k-Free Integers [PDF]

open access: yesProceedings of the American Mathematical Society, 1973
Let Qt(x) denote the number of semi-£-free integers £ix. It is known that Q*(x)=ai*x+0(x1/k), where a* is a constant. In this paper we prove that Aito = fiito - «I* = 0(x1/k cxp{-A lof^xQoglogx)-1^}), where A is an absolute positive constant. Further, on the assump- tion of the Riemann hypothesis, we prove that A*(x) = 0(jc2""+1> exp{/l log x(iog log x)
Suryanarayana, D.   +1 more
openaire   +2 more sources

Approximate distributed top-k queries [PDF]

open access: yesDistributed Computing, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Boaz Patt-Shamir, Allon Shafrir
openaire   +2 more sources

Superpixel-Based Classification Using K Distribution and Spatial Context for Polarimetric SAR Images

open access: yesRemote Sensing, 2016
Classification techniques play an important role in the analysis of polarimetric synthetic aperture radar (PolSAR) images. PolSAR image classification is widely used in the fields of information extraction and scene interpretation or is performed as a ...
Qiao Xu   +3 more
semanticscholar   +1 more source

K-means distribution map.

open access: yes, 2016
Map of the distribution of materials and their classification according to the k-means method.
Alfonso Benito-Calvo (559798)   +3 more
core   +1 more source

On the Symmetry of the Distribution of $k$-Crossings and $k$-Nestings in Graphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2006
This note contains two results on the distribution of $k$-crossings and $k$-nestings in graphs. On the positive side, we exhibit a class of graphs for which there are as many $k$-noncrossing $2$-nonnesting graphs as $k$-nonnesting $2$-noncrossing graphs. This class consists of the graphs on $[n]$ where each vertex $x$ is joined to at most one vertex $y$
openaire   +2 more sources

Non-dimensional wavenumber in full-spectrum k-distribution computations with or without a reference state

open access: yes, 2017
In the full spectrum k-distribution method, the k-distributions are Planck function weighted. These k-distributions depend on temperature, which varies with location in nonisothermal media.
A. Maurente   +3 more
semanticscholar   +1 more source

K-distribution Clutter Simulation Methods Based on Improved ZMNL and SIRP

open access: yesLeida xuebao, 2014
Zero Memory NonLinearity (ZMNL) and Spherically Invariant Random Process (SIRP) are two commonly used methods in K-distribution clutter simulations. An improved simulation method, which adds abranch of Gamma-distributed variable and extends the shape ...
Zhu Jie-li, Tang Jun
doaj   +1 more source

A Novel Approximation for K Distribution: Closed-Form BER Using DPSK Modulation in Free-Space Optical Communication

open access: yesIEEE Photonics Journal, 2017
A new analytical approximate expression for K distribution is proposed by expanding it in terms of orthogonal associated Laguerre polynomial. The expansion is truncated after first three terms, which yields a fairly close approximation to K distribution.
R. Singh, .. Karmeshu, Santosh Kumar
semanticscholar   +1 more source

Research on Distribution Network Security Analysis Based on K(N-1+k) Criterion and Rank Preference Optimal Ordering

open access: yesJournal of Applied Mathematics, 2014
The objective of security analysis is to find the weak link of distribution network. The K(N-1+k) criterion based on the characteristics of distribution network was proposed for distribution network security analysis. According to the K(N-1+k) criterion,
Wang Zengping   +3 more
doaj   +1 more source

Airborne Laser Scanning for the Site Type Identification of Mature Boreal Forest Stands

open access: yesRemote Sensing, 2011
In Finland, forest site types are used to assess the need of silvicultural operations and the growth potential of the forests and, therefore, provide important inventory information.
Kalle Eerikäinen   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy