Results 111 to 120 of about 387,303 (294)

On the Exponential Inequality for Weighted Sums of a Class of Linearly Negative Quadrant Dependent Random Variables

open access: yesThe Scientific World Journal, 2014
The exponential inequality for weighted sums of a class of linearly negative quadrant dependent random variables is established, which extends and improves the corresponding ones obtained by Ko et al. (2007) and Jabbari et al. (2009).
Guodong Xing, Shanchao Yang
doaj   +1 more source

Multilayer Self‐Limiting Electrospray Deposition via Stepped Voltage Bias

open access: yesAdvanced Engineering Materials, EarlyView.
Self‐limiting electrospray deposition (SLED) uses a high voltage to generate and deposit a charged payload on a target surface. The coating retains its charge, repelling newly arriving material. SLED thickness can be decreased by applying a secondary bias to the target.
Madhuri Deb   +3 more
wiley   +1 more source

Exponential sums over lifts of points [PDF]

open access: yes, 2004
We give bounds for exponential sums associated to functions on curves defined over Galois rings. We first define summation subsets as the images of lifts of points from affine opens of the reduced curve, and give bounds for the degrees of their ...
Blache, Régis
core   +1 more source

On exponential sums

open access: yes, 1997
Let f be a polinomial with coefficients in a finite field F. Let $Ψ: F \to C^{\ast}$ be a non-trivial additive character. In this paper we give bounds for the exponential sums $\sum_{x\in F^n} Ψ(Tr_{F/F_p} (f(x)))$ in some cases where the highest degree form of f defines a singular projective hypersurface X (e.g.
openaire   +2 more sources

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt   +5 more
wiley   +1 more source

On the set of distances between two sets over finite fields

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
We use bounds of exponential sums to derive new lower bounds on the number of distinct distances between all pairs of points (x,y)∈×ℬ for two given sets ,ℬ∈Fqn, where Fq is a finite field of q elements and n≥1 is an integer.
Igor E. Shparlinski
doaj   +1 more source

Exponential Sums and Lattice Points [PDF]

open access: yesProceedings of the London Mathematical Society, 1990
The area A inside a simple closed curve C can be estimated graphically by drawing a square lattice of sides 1/M. The number of lattice points inside C is approximately \(AM^ 2\). If C has continuous nonzero radius of curvature, the number of lattice points is accurate to order of magnitude at most \(M^{\alpha}\) for any \(\alpha >2/3\). We show that if
openaire   +2 more sources

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

L-functions of Exponential Sums over Finite Fields [PDF]

open access: yes, 2021
Let $\mathbb{F}_{q}$ be a finite field with characteristic $p$. A fundamental problem in number theory is to estimate the reciprocal zeros and poles of L-functions of exponential sums over $\mathbb{F}_{q}$. In this dissertation, we focus on two classical
Chen, Chao
core  

Non‐Additive Criteria Assessment in Sustainability Evaluation of High Entropy Alloys: A Toxicity‐Weighted Framework

open access: yesAdvanced Engineering Materials, EarlyView.
Sustainability assessment requires methodologies that appropriately distinguish between additive and non‐additive material properties. A toxicity‐weighted scoring system is developed and applied that accounts for the disproportionate influence of highly toxic constituents through nonlinear weighting functions, providing more realistic estimates than ...
Seth Mehalic   +2 more
wiley   +1 more source

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