Results 121 to 130 of about 12,577,393 (401)

Simple quasi-exponential slope generator [PDF]

open access: yes, 1969
Circuitry for digitally generating an exponentially decaying wave function permits discrete values to be sampled from the exponential waveform for comparison with a binary number of specified accuracy.
Anderson, T. O., Hurd, W. J.
core   +1 more source

Origin of Lagrangian Intermittency in Drift-Wave Turbulence

open access: yes, 2010
The Lagrangian velocity statistics of dissipative drift-wave turbulence are investigated. For large values of the adiabaticity (or small collisionality), the probability density function of the Lagrangian acceleration shows exponential tails, as opposed ...
B. Kadoch   +5 more
core   +3 more sources

Analysis of the regulation of undecaprenyl diphosphate dephosphorylation in Escherichia coli

open access: yesFEBS Open Bio, EarlyView.
BacA, PgpB, and YbjG phosphatases are involved in undecaprenyl phosphate (C55P) synthesis in Escherichia coli. We analyzed the lipid contents and the gene expression in the gene‐disruption strains. Undecaprenyl diphosphate (C55PP) level increased in the bacA, ybjG double‐disruption strain, but C55P levels were similar in all strains.
Tomotaka Jitsukawa   +2 more
wiley   +1 more source

Comparing C and Zilber exponential fields, zero sets of exponential polynomials [PDF]

open access: yesarXiv, 2013
We continue the research programme of comparing the complex exponential field with Zilber exponential. For the latter we prove, using diophantine geometry, various properties about zero sets of exponential functions, proved for C using analytic function theory, e g the Identity Theorem.
arxiv  

Properties of three functions relating to the exponential function and the existence of partitions of unity [PDF]

open access: yes, 2012
In the paper, the author studies properties of three functions relating to the exponential function and the existence of partitions of unity, including accurate and explicit computation of their derivatives, analyticity, complete monotonicity ...
Feng Qi (祁锋)
semanticscholar   +1 more source

A study of the personal income distribution in Australia

open access: yes, 2006
We analyze the data on personal income distribution from the Australian Bureau of Statistics. We compare fits of the data to the exponential, log-normal, and gamma distributions.
Banerjee, Anand   +2 more
core   +2 more sources

UR‐cycleGAN: Denoising full‐body low‐dose PET images using cycle‐consistent Generative Adversarial Networks

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study aims to develop a CycleGAN based denoising model to enhance the quality of low‐dose PET (LDPET) images, making them as close as possible to standard‐dose PET (SDPET) images. Methods Using a Philips Vereos PET/CT system, whole‐body PET images of fluorine‐18 fluorodeoxyglucose (18F‐FDG) were acquired from 37 patients to ...
Yang Liu, ZhiWu Sun, HaoJia Liu
wiley   +1 more source

The C*-algebra of the exponential function [PDF]

open access: yesarXiv, 2011
The complex exponential function is a local homeomorphism and gives therefore rise to an 'etale groupoid and a C*-algebra. We determine this algebra, as well as the alge bra of the complex conjugate of the exponential function.
arxiv  

Decoupling, exponential sums and the Riemann zeta function [PDF]

open access: yes, 2014
We establish a new decoupling inequality for curves in the spirit of [B-D1], [B-D2] which implies a new mean value theorem for certain exponential sums crucial to the Bombieri-Iwaniec method as developed further in [H].
J. Bourgain
semanticscholar   +1 more source

Some implications of a new definition of the exponential function on time scales

open access: yes, 2010
We present a new approach to exponential functions on time scales and to timescale analogues of ordinary differential equations. We describe in detail the Cayley-exponential function and associated trigonometric and hyperbolic functions. We show that the
Cieśliński, Jan L.
core  

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