Results 31 to 40 of about 824,647 (276)

Regulatory developments and their impacts to the nano-industry: A case study for nano-additives in 3D printing

open access: yesEcotoxicology and Environmental Safety, 2021
Nanotechnology has increasing applications in numerous markets, particularly in additive processing (3D printing) and manufacturing, which is important for consumer products, medical devices, construction, and general research and development across many
Alicia A. Taylor   +2 more
doaj   +1 more source

Asymptotic tensor rank of graph tensors: beyond matrix multiplication [PDF]

open access: yes, 2019
We present an upper bound on the exponent of the asymptotic behaviour of the tensor rank of a family of tensors defined by the complete graph on $k$ vertices.
Christandl, Matthias   +2 more
core   +4 more sources

Numerical-analytical integrating the equations of a point mass projectile motion at the velocities close to sonic peak of air drag exponent [PDF]

open access: yesКомпьютерные исследования и моделирование, 2013
It is shown that the relative air drag force for many different ballistic profiles obeys the law as follows R(V)=Mg·w(V/WT)n(V) with V being the velocity, WT - some threshold velocity close to that of sound, w equals to R(WT) and n(V) is the exponent in ...
Viktor Vladimirovich Chistyakov
doaj   +1 more source

Group-theoretic algorithms for matrix multiplication [PDF]

open access: yes, 2005
We further develop the group-theoretic approach to fast matrix multiplication introduced by Cohn and Umans, and for the first time use it to derive algorithms asymptotically faster than the standard algorithm.
Cohn, Henry   +3 more
core   +3 more sources

Polynomials and the exponent of matrix multiplication [PDF]

open access: yes, 2017
The exponent of matrix multiplication is the smallest constant ω such that two n×n matrices may be multiplied by performing O(nω+ε) arithmetic operations for every ε>0 .
L. Chiantini   +4 more
semanticscholar   +1 more source

Feral Cat Populations and Feline Retrovirus Prevalence in San Mateo County, California in Three Time Periods between 2001 and 2016

open access: yesAnimals, 2022
This study was initiated in 2004 because the prevalence of feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV) infections in feral cats in San Mateo County (SMC) was not known.
Charlotte H. Edinboro
doaj   +1 more source

Schur's exponent conjecture - counterexamples of exponent $5$ and exponent $9$ [PDF]

open access: yesInternational Journal of Group Theory, 2021
There is a long-standing conjecture attributed to I. Schur that if $G$ is a finite group with Schur multiplier $M(G)$ then the exponent of $M(G)$ divides the exponent of $G$. In this note I give an example of a four generator group $G$ of order $5^{4122}$
Michael Vaughan-Lee
doaj   +1 more source

Critical exponent for the quantum spin Hall transition in Z_2 network model

open access: yes, 2011
We have estimated the critical exponent describing the divergence of the localization length at the metal-quantum spin Hall insulator transition. The critical exponent for the metal-ordinary insulator transition in quantum spin Hall systems is known to ...
Kobayashi, K., Ohtsuki, T., Slevin, K.
core   +1 more source

Methodological challenges to evaluating the health economic impact of nutritional interventions

open access: yesWorld Nutrition, 2019
Enhancing the diet by increasing or decreasing consumption of selected foods or nutrients is a well-accepted method of improving population health in certain settings.
Jordana Kate Schmier, Ellen T Chang
doaj   +1 more source

The Critical Exponent is Computable for Automatic Sequences

open access: yes, 2011
The critical exponent of an infinite word is defined to be the supremum of the exponent of each of its factors. For k-automatic sequences, we show that this critical exponent is always either a rational number or infinite, and its value is computable ...
A. Cobham   +18 more
core   +2 more sources

Home - About - Disclaimer - Privacy