Here the problem of density estimation using wavelets is considered. Nonparametric wavelet density estimators have recently been proposed and seem to outperform classical estimators in representing discontinuities and local oscillations. The purpose of this paper is to give a review of different types of wavelet density estimators proposed in the literature. Properties, comparisons with classic...

Aggregates containing both phycoerythrin and from hot springs (pH 8 .2-8 .4) in the lower Geyser phycocyanin were first described in the red alga Basin area of the Yellowstone National Park . The Porphyridium cruentum and named phycobilisomes temperature of the water at these sites was in the (7, 8) . This and subsequent investigations of range 65°-70°C . The selected unicells were usually phyc...

Silicified Biota in High-Altitude, Geothermally Influenced Ignimbrites at El Tatio Geyser Field, Andean Cordillera (Chile) Roberto Barbieri, Barbara Cavalazzi, Nunzia Stivaletta & Purificación López-García a Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Bologna, Bologna, Italy b Department of Geology, University of Johannesburg, Johannesburg, South Africa c Unité d’...

In this article we propose a penalized likelihood approach for the semiparametric density model with parametric and nonparametric components. An efficient iterative procedure is proposed for estimation. Approximate generalized maximum likelihood criterion from Bayesian point of view is derived for selecting the smoothing parameter. The finite sample performance of the proposed estimation approa...

General constraints on geyser phenomena are developed and applied to speculative methane geysers on Titan. Variation of boiling point with depth of ethane–methane–nitrogen fluids is found to be of order 0.3 K m−1, in contrast with around 2 K m−1 for water on Earth. It is found that geysers are possible on Titan but require enhancements of ∼100 above global-average geothermal heat flux, a factor...

Steamboat Geyser in Yellowstone National Park is the tallest active geyser on Earth and believed to have hydrologic connection Cistern Spring, a hydrothermal pool ?100 m southwest from vent. Despite broad scientific interest, rare episodic eruptions made it difficult study its eruption dynamics underground plumbing architecture. In response recent reactivation of Steamboat, which has produced m...

Microbial eukaryotes are integral components of natural microbial communities, and their inclusion is critical for many ecosystem studies, yet the majority of published metagenome analyses ignore eukaryotes. In order to include eukaryotes in environmental studies, we propose a method to recover eukaryotic genomes from complex metagenomic samples. A key step for genome recovery is separation of ...

We present observations of recurrent active region coronal jets and derive their thermal non-thermal properties, by studying the physical properties plasma simultaneously at base footpoint, along outflow jets. The sample analyzed solar were observed SDO-AIA in Extreme Ultraviolet RHESSI X-Ray domain. main parameters: temperature, density, energy flux contributions, etc. are calculated using mul...