Results 81 to 90 of about 35,877,441 (279)

Measurement of e+e− → e+e− and e+e− → λλ at energies up to 36.7 GeV

open access: yesPhysics Letters B, 1981
Abstract The differential cross sections of the reactions e + e − → e + e − and e + e − → λλ are measured at energies between 33.0 and 36.7 GeV. The results agree with the predictions of quantum electrodynamics. A comparison with the standard model of electroweak interaction yields sin 2 θ W = 0.25 ± 0.13.
B. Grossetete   +64 more
openaire   +2 more sources

'Beating the news' with EMBERS: Forecasting Civil Unrest using Open Source Indicators [PDF]

open access: yesarXiv, 2014
We describe the design, implementation, and evaluation of EMBERS, an automated, 24x7 continuous system for forecasting civil unrest across 10 countries of Latin America using open source indicators such as tweets, news sources, blogs, economic indicators, and other data sources.
arxiv  

Transmission of Renormalized Benzene Circuits

open access: yes, 2015
The renormalization equations emerge from a Greenian-matrix solution of the discretized Schrodinger equation. A by-product of these equations is the decimation process, which enables substituted-benzenes to be mapped onto corresponding dimers, that are ...
Davison, Sydney G., Sulston, Kenneth W.
core  

Progress in existing and planned MST radars [PDF]

open access: yes, 1986
Radar systems are described which use two different wind measuring techniques: the partial-reflection drift technique and the mesosphere-stratosphere-troposphere (MST) or Doppler beam-swing radar technique.
Vanzandt, T. E.
core   +1 more source

Effect of selenium and vitamin E on risk of prostate cancer and other cancers: the Selenium and Vitamin E Cancer Prevention Trial (SELECT).

open access: yesJournal of the American Medical Association (JAMA), 2009
CONTEXT Secondary analyses of 2 randomized controlled trials and supportive epidemiologic and preclinical data indicated the potential of selenium and vitamin E for preventing prostate cancer. OBJECTIVE To determine whether selenium, vitamin E, or both
S. Lippman   +33 more
semanticscholar   +1 more source

Characterization of material composite marble-polyester

open access: yesMateriales de Construccion, 2002
In this work we characterize a new material composite, formed with a polyester and crushed white marble mixture. The final purpose is double: to obtain a material for applications sufficiently competitive after an economic viability study, increasing ...
F. A. Corpas Iglesias   +5 more
doaj   +1 more source

Detailed W0 effects in e+e− → e+e−

open access: yesPhysics Letters B, 1975
Abstract The predicted cross section for the reaction e + e − →e + e − is presented assuming one photon and W 0 exchange. Pure W 0 terms and the W 0 width are included.
openaire   +2 more sources

Weak shape theorem in first passage percolation with infinite passage times

open access: yes, 2014
We consider the model of i.i.d. first passage percolation on $\mathbb{Z}^d$ : we associate with each edge $e$ of the graph a passage time $t(e)$ taking values in $[0,+\infty]$, such that $\mathbb{P}[t(e)p_c(d)$.
Cerf, Raphaël, Théret, Marie
core  

Existence of a persistent background of turbulence [PDF]

open access: yes, 1983
A plausible scenario for the existence of a persistent back-ground of turbulence in the free atmosphere is described. The MST radar technique is the only existing technique that can be used to describe the morphology of occurrence of turbulence as a ...
Vanzandt, T. E.
core   +1 more source

Evaluación del estado de la madera en obras de rehabilitación mediante técnicas de ultrasonidos y obtención de parámetros resistentes

open access: yesInformes de la Construccion, 1995
Este artículo presenta el desarrollo de un método de ensayo, no destructivo, para la inspección y evaluación in situ de elementos estructurales de madera, basado en las medidas de la velocidad de ondas ultrasónicas y determinación de humedad. Mediante la
Carmen Rodríguez Liñán   +1 more
doaj   +1 more source

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