Results 41 to 50 of about 1,436,799 (320)

Newton-Hooke Limit of Beltrami-de Sitter Spacetime, Principles of Galilei-Hooke's Relativity and Postulate on Newton-Hooke Universal Time

open access: yes, 2007
Based on the Beltrami-de Sitter spacetime, we present the Newton-Hooke model under the Newton-Hooke contraction of the $BdS$ spacetime with respect to the transformation group, algebra and geometry.
Beltrami E.   +9 more
core   +1 more source

Newton maps of complex exponential functions and parabolic surgery

open access: yes, 2018
The paper deals with Newton maps of complex exponential functions and a surgery tool developed by P. Ha\"issinsky. The concept of "Postcritically minimal" Newton maps of complex exponential functions are introduced, analogous to postcritically finite ...
Mamayusupov, Khudoyor
core   +1 more source

Newton's method

open access: yesWIREs Computational Statistics, 2010
AbstractNewton's method is one of the most powerful techniques for solving systems of nonlinear equations and minimizing functions. It is easy to implement and has a provably fast rate of convergence under fairly mild assumptions. Because of these and other nice properties, Newton's method is at the heart of many solution techniques used to solve real ...
openaire   +2 more sources

L'identità transgender della fotografia di moda negli anni Ottanta. I casi Newton e Scianna

open access: yesZoneModa Journal, 2019
At the beginning of the Eighties, the discussion around the photography’s issues is influenced by an anti-ideological climate. Core of this discussione is the difference between the so-called “pure” photographers and the “artists” photographers, a ...
Claudio Marra
doaj   +1 more source

XMM-Newton and INTEGRAL analysis of the Supergiant Fast X-ray Transient IGR J17354-3255 [PDF]

open access: yes, 2018
We present the results of combined INTEGRAL and XMM-Newton observations of the supergiant fast X-ray transient (SFXT) IGR J17354$-$3255. Three XMM-Newton observations of lengths 33.4 ks, 32.5 ks and 21.9 ks were undertaken, the first an initial pointing ...
Bird, A. J.   +4 more
core   +2 more sources

A Newton-CG algorithm with complexity guarantees for smooth unconstrained optimization [PDF]

open access: yesMathematical programming, 2018
We consider minimization of a smooth nonconvex objective function using an iterative algorithm based on Newton’s method and the linear conjugate gradient algorithm, with explicit detection and use of negative curvature directions for the Hessian of the ...
C. Royer   +2 more
semanticscholar   +1 more source

A teoria da luz de Newton nos textos de Young

open access: yesRevista Brasileira de Ensino de Física
A concepção de Newton sobre a luz tem sido alvo de controvérsia. Alguns autores consideram sua teoria puramente corpuscular; outros, infiuenciados pelos textos de Young, defendem que ela seria uma combinação de elementos corpusculares e ondulatórios.
Fabio W.O. da Silva
doaj   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

Chimpanzee hunting behavior [PDF]

open access: yes, 2007
The pursuit, capture and consumption of small-and medium-sized vertebrates, appears to be typical of all chimpanzee (Pan troglodytes) populations, although large variation exists. Red colobus monkeys (Piliocolobus sp.) appear to be the preferred prey but
Newton-Fisher, Nicholas E.
core  

Discovery and Targeted Proteomic Studies Reveal Striatal Markers Validated for Huntington's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Clinical trials for Huntington's disease (HD) enrolling persons before clinical motor diagnosis (CMD) lack validated biomarkers. This study aimed to conduct an unbiased discovery analysis and a targeted examination of proteomic biomarkers scrutinized by clinical validation. Methods Cerebrospinal fluid was obtained from PREDICT‐HD and
Daniel Chelsky   +8 more
wiley   +1 more source

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