Search results for "Gap"
showing 10 items of 1144 documents
Comparing Spatial and Spatio-temporal FPCA to Impute Large Continuous Gaps in Space
2018
Multivariate spatio-temporal data analysis methods usually assume fairly complete data, while a number of gaps often occur along time or in space. In air quality data long gaps may be due to instrument malfunctions; moreover, not all the pollutants of interest are measured in all the monitoring stations of a network. In literature, many statistical methods have been proposed for imputing short sequences of missing values, but most of them are not valid when the fraction of missing values is high. Furthermore, the limitation of the methods commonly used consists in exploiting temporal only, or spatial only, correlation of the data. The objective of this paper is to provide an approach based …
Coronal properties of G-type stars in different evolutionary phases
2005
We report on the analysis of XMM-Newton observations of three G-type stars in very different evolutionary phases: the weak-lined T Tauri star HD 283572, the Zero Age Main Sequence star EK Dra and the Hertzsprung-gap giant star 31 Com. They all have high X-ray luminosity (10^31 erg/s for HD 283572 and 31 Com and 10^30 erg/s for EK Dra). We compare the Emission Measure Distributions (EMDs) of these active coronal sources, derived from high-resolution XMM-Newton grating spectra, as well as the pattern of elemental abundances vs. First Ionization Potential (FIP). We also perform time-resolved spectroscopy of a flare detected by XMM from EK Dra. We interpret the observed $EMD$s as the result of …
"Table 16" of "Measurement of dijet production with a veto on additional central jet activity in pp collisions at sqrt(s)=7 TeV using the ATLAS detec…
2013
The Gap Fraction as a function of the dijet veto energy, Q0, for boundary jets having a mean transverse momentum in the range [120,150} GeV and rapidity difference in the range [4,5]. Data are shown for two dijet selections: (i) the dijet system is defined as the two leading-pT jets in the event (ii) the dijet system is defined as the most forward-backward jets in the event.
"Table 2" of "Measurement of dijet production with a veto on additional central jet activity in pp collisions at sqrt(s)=7 TeV using the ATLAS detect…
2013
The Gap Fraction as a function of the mean transverse momentum of the boundary jets for boundary jets having a rapidity difference in the range [2,3], using a jet veto Q0 = 20 GeV. Data are shown for two dijet selections: (i) the dijet system is defined as the two leading-pT jets in the event (ii) the dijet system is defined as the most forward-backward jets in the event.
"Table 4" of "Measurement of dijet production with a veto on additional central jet activity in pp collisions at sqrt(s)=7 TeV using the ATLAS detect…
2013
The Gap Fraction as a function of the mean transverse momentum of the boundary jets for boundary jets having a rapidity difference in the range [4,5], using a jet veto Q0 = 20 GeV. Data are shown for two dijet selections: (i) the dijet system is defined as the two leading-pT jets in the event (ii) the dijet system is defined as the most forward-backward jets in the event.
"Table 5" of "Measurement of dijet production with a veto on additional central jet activity in pp collisions at sqrt(s)=7 TeV using the ATLAS detect…
2013
The Gap Fraction as a function of the mean transverse momentum of the boundary jets for boundary jets having a rapidity difference in the range [5,6], using a jet veto Q0 = 20 GeV. Data are shown for two dijet selections: (i) the dijet system is defined as the two leading-pT jets in the event (ii) the dijet system is defined as the most forward-backward jets in the event.
"Table 15" of "Measurement of dijet production with a veto on additional central jet activity in pp collisions at sqrt(s)=7 TeV using the ATLAS detec…
2013
The Gap Fraction as a function of the dijet veto energy, Q0, for boundary jets having a mean transverse momentum in the range [120,150} GeV and rapidity difference in the range [2,3]. Data are shown for two dijet selections: (i) the dijet system is defined as the two leading-pT jets in the event (ii) the dijet system is defined as the most forward-backward jets in the event.
"Table 3" of "Measurement of dijet production with a veto on additional central jet activity in pp collisions at sqrt(s)=7 TeV using the ATLAS detect…
2013
The Gap Fraction as a function of the mean transverse momentum of the boundary jets for boundary jets having a rapidity difference in the range [3,4], using a jet veto Q0 = 20 GeV. Data are shown for two dijet selections: (i) the dijet system is defined as the two leading-pT jets in the event (ii) the dijet system is defined as the most forward-backward jets in the event.
"Table 14" of "Measurement of dijet production with a veto on additional central jet activity in pp collisions at sqrt(s)=7 TeV using the ATLAS detec…
2013
The Gap Fraction as a function of the dijet veto energy, Q0, for boundary jets having a mean transverse momentum in the range [70,90} GeV and rapidity difference in the range [4,5]. Data are shown for two dijet selections: (i) the dijet system is defined as the two leading-pT jets in the event (ii) the dijet system is defined as the most forward-backward jets in the event.
"Table 10" of "Measurement of dijet production with a veto on additional central jet activity in pp collisions at sqrt(s)=7 TeV using the ATLAS detec…
2013
The Gap Fraction as a function of the rapidity difference between the two boundary jets for boundary jets having a mean transverse momentum in the range [180,210] GeV, using a jet veto Q0 = 20 GeV. Data are shown for two dijet selections: (i) the dijet system is defined as the two leading-pT jets in the event (ii) the dijet system is defined as the most forward-backward jets in the event.