نتایج جستجو برای: background

تعداد نتایج: 835851  

Journal: :American Journal of Physics 1992

Journal: :American Journal of Public Health and the Nations Health 1951

Journal: :Scholarpedia 2008

2003
Makito Seki Toshikazu Wada Hideto Fujiwara Kazuhiko Sumi

This paper presents a novel background subtraction method for detecting foreground objects in dynamic scenes involving swaying trees and fluttering flags. Most methods proposed so far adjust the permissible range of the background image variations according to the training samples of background images. Thus, the detection sensitivity decreases at those pixels having wide permissible ranges. If ...

Journal: :Human biology 2014
Carla Santana Gino Noris Marco Antonio Meraz-Ríos Jonathan J Magaña Emma S Calderon-Aranda Maria de Lourdes Muñoz Rocío Gómez

This study aims to portray the complex diversity of the Mexican Mestizo population, which represents 98.8% of the entire population of Mexico. We compiled extended haplotype data of the Y chromosome from populations in the Central Valley of Mexico (CVM), which we compared with other Mestizo and parental (Amerindian, European, and African) populations. A complex ancestral relationship was found ...

Journal: :The Review of scientific instruments 2015
Enrique Villa Juan L Cano Jaime Cagigas David Ortiz Francisco J Casas Ana R Pérez Beatriz Aja J Vicente Terán Luisa de la Fuente Eduardo Artal Roger Hoyland Ángel Mediavilla

This paper presents the analysis, design, and characterization of the thirty gigahertz instrument receiver developed for the Q-U-I Joint Tenerife experiment. The receiver is aimed to obtain polarization data of the cosmic microwave background radiation from the sky, obtaining the Q, U, and I Stokes parameters of the incoming signal simultaneously. A comprehensive analysis of the theory behind t...

2012
Richard Conn Henry Henry A. Rowland

I report on progress in my ongoing work with Professor Jayant Murthy concerning the origin and nature of the diffuse ultraviolet background radiation over the sky. We have obtained and are reducing a vast trove of Voyager ultraviolet spectrometer observations of the diffuse background shortward of Lα, including for the first time measurements made from the outermost regions of the solar system,...

1989
Dale D. Hoppes

This report describes the activities discussed at the 10th meeting of Section II of the Consultative Committee on Standards for the Measurement of Ionizing Radiations (Comité Consultatif pour les Etalons de Mesure des Rayonnements Ionisants, CCEMRI) held in May 1989 at Sèvres (France). Topics included present and future international comparisons of activity measurements, the status and possible...

Journal: :Queueing Syst. 2014
Joke G. Blom Koen De Turck Offer Kella Michel Mandjes

This paper analyzes large deviation probabilities related to the number of customers in a Markov modulated infinite-server queue, with state-dependent arrival and service rates. Two specific scalings are studied: in the first, just the arrival rates are linearly scaled by N (for large N ), whereas in the second in addition the Markovian background process is sped up by a factor N , for some > 0...

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