نتایج جستجو برای: time variability

تعداد نتایج: 2026936  

2015
Heidi M. Sosik

OBJECTIVES The initial objectives of this project are focused on making measurements of time series and spatial distributions of both apparent and inherent optical properties in the waters on and around Georges Bank. These observations will be used to identify spatial and temporal patterns of variability and contribute to defining the dominant sources of variability in optical and phytoplankton...

2003
Jean-François Bonastre Philippe Morin Jean-Claude Junqua

This paper introduces a new acoustic modeling method called Gaussian Dynamic Warping (GDW). It is targeting real world applications such as voice-based entrance door security systems, the example presented in this paper. The proposed approach uses a hierarchical statistical framework with three levels of specialization for the acoustic modeling. The highest level of specialization is in additio...

2016
Marion Morel Richard Kulpa Anthony Sorel Catherine Achard Séverine Dubuisson

Automatically evaluating and quantifying the performance of a player is a complex task since the important motion features to analyze depend on the type of performed action. But above all, this complexity is due to the variability of morphologies and styles of both the experts who perform the reference motions and the novices. Only based on a database of experts’ motions and no additional knowl...

2004
L. Telesca

Recently, it has been proposed a new method to investigate the linear/nonlinear properties of a time series by decomposing it into two sub-series: magnitude and sign sub-series (Ashkenazy et al., 2003). The long-range correlation properties of the magnitude and sign sub-series relate to nonlinear and linear behavior of the original time series respectively. We apply this method to the hourly ti...

2012
H. Mittelbach

Knowledge about the spatio-temporal variability of soil moisture is essential to understand and predict processes in climate science and hydrology. A significant body of literature exists on the characterization of the spatial variability and the rank stability (also called temporal stability) of absolute soil moisture. Yet previous studies were generally based on short-term measurement campaig...

Journal: :Remote Sensing 2013
Eliakim Hamunyela Jan Verbesselt Gerbert Roerink Martin Herold

Plant phenology is changing because of recent global warming, and this change may precipitate changes in animal distribution (e.g., pests), alter the synchronization between species, and have feedback effects on the climate system through the alteration of biogeochemical and physical processes of vegetated land surface. Here, ground observations (leaf unfolding/first leaf separation of six deci...

2002
Mark E. Jakubauskas Dana L. Peterson Jude H. Kastens David R. Legates

that may be the first to exhibit signs of environmental degradaAbstract tion. An index of interannual variability for natural and manThe southern Great Plains may be one of the first areas in the aged LULC types was developed using phase components United States to show significant and detectable changes in derived from harmonic analysis of a nine-year (1989–1997) vegetation cover as a result o...

2004
William C. Gerken Robert Lee

6 Simplex parameter fits of how computational time scales with network size 47 v

2008
Theodoros E. Athanaileas Georgios S. Stamatakos Andreas Menychtas Dimitra I. Kaklamani Dimitra D. Dionysiou Theodora A. Varvarigou Nikolaos K. Uzunoglu

In silico (on the computer) oncology is a multi-disciplinary field that focuses on the examination and modeling of biological mechanisms related to the phenomenon of cancer. In silico oncology simulation model may be used for evaluating and comparing different therapeutic schemes while at the same time considering different values of critical parameters which present substantial inter-patient v...

Journal: :آب و خاک 0
محمد بنایان آزاده محمدیان امین علیزاده

abstract climate variability empowers critical consequences on sustainability of soil and water resources. in this paper the trend of annual and seasonal time scale of temperature (minimum, maximum, average), relative humidity (minimum, maximum, average), precipitation, wind speed, extreme events, cloudiness, reference evapotranspiration employing mann-kendall and least square errors were studi...

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