scholarly journals A preliminary studyof the site-dependence of the multifractalfeatures of geoelectric measurements

2009 ◽  
Vol 47 (1) ◽  
Author(s):  
L. Telesca ◽  
G. Colangelo ◽  
V. Lapenna ◽  
M. Macchiato
Keyword(s):  
Site Dependence

scholarly journals Multivariate bias adjustment of high-dimensional climate simulations: the Rank Resampling for Distributions and Dependences (R<sup>2</sup>D<sup>2</sup>) bias correction

2018 ◽  
Vol 22 (6) ◽  
pp. 3175-3196 ◽  
Author(s):  
Mathieu Vrac
Keyword(s):  
Bias Correction ◽  
Climate Model ◽  
Regional Climate ◽  
Grid Cell ◽  
Dependence Structure ◽  
Historical Period ◽  
Temporal Properties ◽  
Temperature And Precipitation ◽  
Climate Simulations ◽  
Site Dependence

Abstract. Climate simulations often suffer from statistical biases with respect to observations or reanalyses. It is therefore common to correct (or adjust) those simulations before using them as inputs into impact models. However, most bias correction (BC) methods are univariate and so do not account for the statistical dependences linking the different locations and/or physical variables of interest. In addition, they are often deterministic, and stochasticity is frequently needed to investigate climate uncertainty and to add constrained randomness to climate simulations that do not possess a realistic variability. This study presents a multivariate method of rank resampling for distributions and dependences (R2D2) bias correction allowing one to adjust not only the univariate distributions but also their inter-variable and inter-site dependence structures. Moreover, the proposed R2D2 method provides some stochasticity since it can generate as many multivariate corrected outputs as the number of statistical dimensions (i.e., number of grid cell  ×  number of climate variables) of the simulations to be corrected. It is based on an assumption of stability in time of the dependence structure – making it possible to deal with a high number of statistical dimensions – that lets the climate model drive the temporal properties and their changes in time. R2D2 is applied on temperature and precipitation reanalysis time series with respect to high-resolution reference data over the southeast of France (1506 grid cell). Bivariate, 1506-dimensional and 3012-dimensional versions of R2D2 are tested over a historical period and compared to a univariate BC. How the different BC methods behave in a climate change context is also illustrated with an application to regional climate simulations over the 2071–2100 period. The results indicate that the 1d-BC basically reproduces the climate model multivariate properties, 2d-R2D2 is only satisfying in the inter-variable context, 1506d-R2D2 strongly improves inter-site properties and 3012d-R2D2 is able to account for both. Applications of the proposed R2D2 method to various climate datasets are relevant for many impact studies. The perspectives of improvements are numerous, such as introducing stochasticity in the dependence itself, questioning its stability assumption, and accounting for temporal properties adjustment while including more physics in the adjustment procedures.

Qc site dependence in the Granada basin (southern Spain)

1991 ◽  
Vol 81 (6) ◽  
pp. 2486-2492
Author(s):  
J. Morales ◽  
J. M. Ibáñez ◽  
F. Vidal ◽  
F. de Miguel ◽  
G. Alguacil ◽  
...  
Keyword(s):  
Southern Spain ◽  
Granada Basin ◽  
Site Dependence

Oxygen migration and optical properties of coronene oxides and their persulfurated derivatives: insight into the electric field effect and the oxygen-site dependence

2020 ◽  
Vol 22 (35) ◽  
pp. 20078-20086
Author(s):  
Qing Zhang ◽  
Yuanyuan Li ◽  
Zexing Cao
Keyword(s):  
Optical Properties ◽  
Electric Field ◽  
External Electric Field ◽  
Field Effect ◽  
Electric Field Effect ◽  
Oxygen Migration ◽  
Site Dependence ◽  
Oxygen Site ◽  
Insight Into

Oxygen migration on the surface of coronene (C24) epoxides and their persulfurated derivatives (PSCs) can be easily tuned by an external electric field and their low-lying states show a remarkable oxygen-site dependence.

Temperature and site dependence of the rate of hydrogen and deuterium abstraction by methyl radicals in methanol glasses

1984 ◽  
Vol 88 (15) ◽  
pp. 3165-3167 ◽  
Author(s):  
T. Doba ◽  
K. U. Ingold ◽  
W. Siebrand ◽  
T. A. Wildman
Keyword(s):  
Methyl Radicals ◽  
Site Dependence

Site Dependence of Soft Errors Induced by Single-Ion Hitting in 64 kbit Static Random Access Memory (SRAM)

1992 ◽  
Vol 31 (Part 2, No. 6B) ◽  
pp. L771-L773 ◽  
Author(s):  
Katsunori Noritake ◽  
Takashi Matsukawa ◽  
Meishoku Koh ◽  
Ken-ichi Hara ◽  
Makoto Goto ◽  
...  
Keyword(s):  
Soft Errors ◽  
Random Access ◽  
Random Access Memory ◽  
Static Random Access Memory ◽  
Access Memory ◽  
Site Dependence

Site Dependence of Methamphetamine Concentrations in Blood Samples Collected from Cadavers of People Who Had Been Methamphetamine Abusers

1993 ◽  
Vol 14 (2) ◽  
pp. 121-124 ◽  
Author(s):  
Tetsuji Miyazaki ◽  
Tohru Kojima ◽  
Mikio Yashiki ◽  
Hironori Wakamoto ◽  
Yasumasa Iwasaki ◽  
...  
Keyword(s):  
Blood Samples ◽  
Site Dependence
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