Results 81 to 90 of about 596,245 (221)

A random encounter model for wildlife density estimation with vertically oriented camera traps

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
The random encounter model for estimating mammal densities from camera‐trap data was modified to accommodate setups with vertically oriented camera traps, which are less sensitive to vandalism and theft. A trial in Bardiya National Park, Nepal, indicated that the modified model produces credible results.
Shuiqing He   +7 more
wiley   +1 more source

Forms of representation of interpolation trigonometric splines [PDF]

open access: yesarXiv
Three forms of representation of trigonometric interpolation splines are considered, in particular, the representation by the coefficients of the interpolation trigonometric polynomial, the representation by trigonometric B-splines, which are considered in more detail, and the representation by fundamental trigonometric splines.
arxiv  

Review and Analysis of Digital Signal Processing Algorithms for Coherent Optical Satellite Links

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Coherent optical satellite links enable high‐throughput communication and high accuracy ranging to and between satellites. Due to the ever‐increasing demand for throughput, wavelength division multiplexing of polarization multiplexed optical signals is being considered as a solution to provide high‐speed optical satellite links.
Carl Valjus, Raphael Wolf, Juraj Poliak
wiley   +1 more source

The parabolic trigonometric functions and the Chebyshev radicals [PDF]

open access: yesarXiv, 2011
The parabolic trigonometric functions have recently been introduced as an intermediate step between circular and hyperbolic functions. They have been shown to be expressible in terms of irrational functions, linked to the solution of third degree algebraic equations.
arxiv  

Theoretical Model of the Island Effect in Flexible Electronics under Equal Biaxial Stretching

open access: yesSmall, EarlyView.
A mechanical model of the island effect under equal biaxial stretching is established through theoretical analysis, simulation, and experimental validation. The scaling law for displacement and strain distributions reveals that the ratio of island radius to substrate length is the key governing parameter.
Zifei Ma   +5 more
wiley   +1 more source

Series representations of the remainders in the expansion for certain trigonometric and hyperbolic functions with applications [PDF]

open access: yesarXiv, 2016
In this paper, we present series representations of the remainders in the expansions for certain trigonometric and hyperbolic functions. By using the obtained results, we establish some inequalities for trigonometric and hyperbolic functions.
arxiv  

Are Correlations Constant Over Time? Application of the CC-TRIGt-test to Return Series from Different Asset Classes. [PDF]

open access: yes
A new test for constant correlation is proposed. Based on the bivariate Student-t distribution, this test is derived as Lagrange multiplier (LM) test. Whereas most of the traditional tests (e.g. Jennrich, 1970, Tang, 1995 and Goetzmann, Li & Rouwenhorst,
Matthias Fischer
core  

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