نتایج جستجو برای: smap

تعداد نتایج: 520  

Journal: :Remote Sensing 2022

Recent developments in passive microwave remote sensing have provided an effective tool for monitoring global soil moisture (SM) observations on a spatiotemporal basis, filling the gap of uneven in-situ measurement distribution. In this paper, four SM products from three bands (L, C, and X) are evaluated using observations, over dry–wet cycle agricultural (mostly paddy/wheat crops) critical zon...

Journal: :Journal of Hydrometeorology 2021

Abstract This global feasibility study assesses the potential of coarse-scale, gridded soil water estimates for probabilistic modeling hydrologically triggered landslides, using Soil Moisture Ocean Salinity (SMOS), Active Passive (SMAP), and Gravity Recovery Climate Experiment (GRACE) remote sensing data; Catchment Land Surface Model (CLSM) simulations; six data products based on assimilation S...

Journal: :Remote Sensing 2017
Carsten Montzka Heye R. Bogena Marek Zreda Alessandra Monerris Ross Morrison Muddu Sekhar Harry Vereecken

The scale difference between point in situ soil moisture measurements and low resolution satellite products limits the quality of any validation efforts in heterogeneous regions. Cosmic Ray Neutron Probes (CRNP) could be an option to fill the scale gap between both systems, as they provide area-average soil moisture within a 150–250 m radius footprint. In this study, we evaluate differences and...

2014
Vasileios P. Kemerlis Michalis Polychronakis Angelos D. Keromytis

Return-to-user (ret2usr) attacks redirect corrupted kernel pointers to data residing in user space. In response, several kernel-hardening approaches have been proposed to enforce a more strict address space separation, by preventing arbitrary control flow transfers and dereferences from kernel to user space. Intel and ARM also recently introduced hardware support for this purpose in the form of...

2013
Ying Gao Jeffrey P. Walker Dongryeol Ryu Alessandra Monerris

Soil moisture plays a key role in many hydrological and agricultural processes because it controls the water and heat energy exchange between the earth and the atmosphere. Addressing the need for routine global surface soil moisture maps, the European Space Agency (ESA) launched the Soil Moisture and Ocean Salinity (SMOS) mission in 2009. It provides L-band microwave brightness temperature obse...

Journal: :Drug metabolism and disposition: the biological fate of chemicals 2002
Hiroyoshi Nakamura Hiromitsu Nakasa Itsuko Ishii Noritaka Ariyoshi Takashi Igarashi Shigeru Ohmori Mitsukazu Kitada

In the present study, we investigated the effects of 14 endogenous steroids on the CYP3A4-mediated drug metabolism by human liver microsomes in vitro. Nevirapine (NVP) 2-, 12-hydroxylations, carbamazepine (CBZ) 10,11-epoxidation, triazolam (TZM) 1'-, 4-hydroxylations, erythromycin (EM) N-demethylation, and 2-sulphamoylacetylphenol (SMAP) formation from zonisamide (ZNS) were investigated. The ac...

2003
Driss Matrouf Olivier Bellot Pascal Nocera Georges Linarès Jean-François Bonastre

Within the framework of speaker-adaptation, a technique based on tree structure and the maximum a posteriori criterion was proposed (SMAP). In SMAP, the parameters estimation, at each node in the tree is based on the assumption that the mismatch between the training and adaptation data is a Gaussian PDF which parameters are estimated by using the Maximum Likelihood criterion. To avoid poor tran...

Journal: :Remote Sensing 2018
Yaping Xu Lei Wang Kenton W. Ross Cuiling Liu Kimberly Berry

Droughts can severely reduce the productivity of agricultural lands and forests. The United States Department of Agriculture (USDA) Southeast Regional Climate Hub (SERCH) has launched the Lately Identified Geospecific Heightened Threat System (LIGHTS) to inform its users of potential water deficiency threats. The system identifies droughts and other climate anomalies such as extreme precipitati...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید