نتایج جستجو برای: d gpr sections

تعداد نتایج: 663871  

Journal: :The Journal of biological chemistry 2003
Anirban Adhikari Stephen R Sprang

Activator of G protein signaling 3 (AGS3) is a guanine nucleotide dissociation inhibitor (GDI) that contains four G protein regulatory (GPR) or GoLoco motifs in its C-terminal domain. The entire C-terminal domain (AGS3-C) as well as certain peptides corresponding to individual GPR motifs of AGS3 bound to G alpha i1 and inhibited the binding of GTP by stabilizing the GDP-bound conformation of G ...

Journal: :Tree physiology 2001
J R Butnor J A Doolittle L Kress S Cohen K H Johnsen

The objectives of our study were to assess the feasibility of using ground-penetrating radar (GPR) to study roots over a broad range of soil conditions in the southeastern United States. Study sites were located in the Southern Piedmont, Carolina Sandhills and Atlantic Coast Flatwoods. At each site, we tested for selection of the appropriate antenna (400 MHz versus 1.5 GHz), determined the abil...

Journal: :Journal of Electrical and Computer Engineering 2023

In this paper, an intelligent integrated approach is proposed to control the reactive power and restore voltage balance in a three-phase system using particle swarm optimization (PSO), Gaussian process regression (GPR), support vector machine (SVM). The PSO algorithm used offline mode determine optimal set of firing angles for thyristor-controlled-reactor (TCR) compensator according smallest fi...

2002
D. A. Grivas Heejeong Shin Dimitri A. Grivas

As Ground Penetrating Radar (GPR) is increasingly employed for assessing the condition of bridge decks, quantifying and controlling the quality of GPR data becomes an important challenge. This paper uses a methodology to assess the accuracy of deck condition measures, and demonstrates the methodology in a case study involving real data. The latter are generated during GPR applications on a larg...

Journal: :Signal Processing 2017
Emanuele Forte Michele Pipan

GPR and reflection seismics share common physical and methodological bases but are sensitive to different subsurface physical properties. The peculiarities of the electromagnetic case impact data acquisition, processing and interpretation. We review multi-offset techniques in GPR applications focusing on similarities and differences through examples taken from different subsurface and target co...

2014
Yu Zhang Anbu Selvam Venkatachalam Dryver Huston Tian Xia

This paper focuses on new signal processing algorithms customized for an air coupled Ultra-Wideband (UWB) Ground Penetrating Radar (GPR) system targeting highway pavements and bridge deck inspections. The GPR hardware consists of a high-voltage pulse generator, a high speed 8 GSps real time data acquisition unit, and a customized field-programmable gate array (FPGA) control element. In comparis...

2014
KELSEY M. LOWE LYNLEY A. WALLIS COLIN PARDOE BEN MARWICK CHRIS CLARKSON TIINA MANNE MIKE A. SMITH RICHARD FULLAGAR

A GPR survey was carried out in advance of archaeological excavations at Madjedbebe (formerly known as Malakunanja II), a sandstone rock shelter in western Arnhem Land (Australia) containing numerous Aboriginal burials. GPR revealed subsurface patterning of rocks in the shelter deposits and archaeological excavation demonstrated that these were related to burials. Post-excavation, GIS and stati...

2015
Xinyan Yan Bo Xie Le Song Byron Boots

Gaussian process regression (GPR) is a popular tool for nonlinear function approximation. Unfortunately, GPR can be difficult to use in practice due to the O(n) memory and O(n) processing requirements for n training data points. We propose a novel approach to scaling up GPR to handle large datasets using the recent concept of doubly stochastic functional gradients. Our approach relies on the fa...

2010
Huanhuan Chen Anthony G Cohn

This paper proposes a probabilistic conic mixture model based on a classification expectation maximization algorithm and applies this algorithm to Ground Penetrating Radar (GPR) spatial data interpretation. Previous work tackling this problem using Hough transform or neural networks for identifying GPR hyperbolae are unsuitable for on-site applications owing to their computational demands and t...

2014
Thomas M. Urban Jeffrey F. Leon Sturt W. Manning Kevin D. Fisher

a r t i c l e i n f o At the Late Bronze Age site of Kalavasos-Ayios Dhimitrios in southern Cyprus, the subterranean remains of previously unknown buildings were recently discovered and mapped with ground-penetrating radar (GPR). Though the fine-grained calcareous substrate at the site was not necessarily ideal for GPR—exhibiting a high clay fraction, significant volumetric water content, and s...

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